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.circleci/config.yml

@@ -19,7 +19,7 @@ jobs:
 
       - run:
           name: Install Emscripten (for GDevelop.js)
-          command: git clone https://github.com/juj/emsdk.git && cd emsdk && ./emsdk install sdk-fastcomp-1.37.37-64bit && ./emsdk activate sdk-fastcomp-1.37.37-64bit && cd ..
+          command: git clone https://github.com/juj/emsdk.git && cd emsdk && ./emsdk install 1.39.6 && ./emsdk activate 1.39.6 && cd ..
 
       - run:
           name: Install Wine for Electron builder

.gitignore

@@ -44,9 +44,6 @@
 /Binaries/**/JsPlatform/*.dll.a
 /Binaries/Output/Release_Windows/newIDE
 *.autosave
-/Binaries/Output/libGD.js/Release
-/Binaries/Output/libGD.js/Debug
-/Binaries/Output/libGD.js/libGD.raw.js
 !/GDCpp/scripts/bcp.exe
 !/scripts/libgettextlib-0-17.dll
 !/scripts/libgettextsrc-0-17.dll

.travis.yml

@@ -24,7 +24,7 @@ addons:
     - /$(if [ "$TRAVIS_PULL_REQUEST" == "false" ]; then echo $TRAVIS_BRANCH; else echo $TRAVIS_PULL_REQUEST_BRANCH; fi)/commit/$(git rev-parse HEAD)
     - /$(if [ "$TRAVIS_PULL_REQUEST" == "false" ]; then echo $TRAVIS_BRANCH; else echo $TRAVIS_PULL_REQUEST_BRANCH; fi)/latest
     paths:
-    - Binaries/Output/libGD.js/Release
+    - Binaries/embuild/GDevelop.js
   apt:
     sources:
     - ubuntu-toolchain-r-test
@@ -63,8 +63,8 @@ install:
 # Install Emscripten (for GDevelop.js)
   - git clone https://github.com/juj/emsdk.git
   - cd emsdk
-  - ./emsdk install sdk-fastcomp-1.37.37-64bit
-  - ./emsdk activate sdk-fastcomp-1.37.37-64bit
+  - ./emsdk install 1.39.6
+  - ./emsdk activate 1.39.6
   - source ./emsdk_env.sh
   - cd ..
 # Install GDevelop.js dependencies and compile it

.vscode/settings.json

@@ -83,7 +83,9 @@
         "__threading_support": "cpp",
         "any": "cpp",
         "array": "cpp",
-        "cinttypes": "cpp"
+        "cinttypes": "cpp",
+        "numeric": "cpp",
+        "__memory": "cpp"
     },
     "files.exclude": {
         "Binaries/*build*": true,

CMakeLists.txt

@@ -75,6 +75,11 @@ else()
     message(FATAL_ERROR "The compiler ${CMAKE_CXX_COMPILER} has no C++11 support (with GNU extensions). Please use a different C++ compiler.")
 endif()
 
+# Mark some warnings as errors
+if(CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
+	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Werror=return-stack-address")
+endif()
+
 #Define common directories:
 set(GD_base_dir ${CMAKE_CURRENT_SOURCE_DIR})
 

Core/CMakeLists.txt

@@ -51,7 +51,12 @@ file(GLOB_RECURSE formatted_source_files tests/* GDCore/Events/* GDCore/Extensio
 list(REMOVE_ITEM formatted_source_files "${CMAKE_CURRENT_SOURCE_DIR}/GDCore/IDE/Dialogs/GDCoreDialogs.cpp" "${CMAKE_CURRENT_SOURCE_DIR}/GDCore/IDE/Dialogs/GDCoreDialogs.h" "${CMAKE_CURRENT_SOURCE_DIR}/GDCore/IDE/Dialogs/GDCoreDialogs_dialogs_bitmaps.cpp")
 gd_add_clang_utils(GDCore "${formatted_source_files}")
 
-add_library(GDCore SHARED ${source_files})
+IF(EMSCRIPTEN)
+	# Emscripten treats all libraries as static libraries
+	add_library(GDCore STATIC ${source_files})
+ELSE()
+	add_library(GDCore SHARED ${source_files})
+ENDIF()
 add_dependencies(GDCore GDVersion)
 IF(EMSCRIPTEN)
 	set_target_properties(GDCore PROPERTIES SUFFIX ".bc")

Core/GDCore/Events/Builtin/CommentEvent.cpp

@@ -12,6 +12,15 @@ using namespace std;
 
 namespace gd {
 
+vector<gd::String> CommentEvent::GetAllSearchableStrings() const {
+  vector<gd::String> allSearchableStrings;
+
+  allSearchableStrings.push_back(com1);
+  allSearchableStrings.push_back(com2);  ///< Com2 is deprecated
+
+  return allSearchableStrings;
+}
+
 void CommentEvent::SerializeTo(SerializerElement &element) const {
   element.AddChild("color")
       .SetAttribute("r", r)

Core/GDCore/Events/Builtin/CommentEvent.h

@@ -7,10 +7,11 @@
 #define COMMENTEVENT_H
 
 #include "GDCore/Events/Event.h"
+#include "GDCore/Events/EventsList.h"
 namespace gd {
 class Layout;
 class Project;
-}
+}  // namespace gd
 
 namespace gd {
 
@@ -45,6 +46,8 @@ class GD_CORE_API CommentEvent : public gd::BaseEvent {
   const gd::String& GetComment() const { return com1; }
   void SetComment(const gd::String& comment) { com1 = comment; }
 
+  virtual std::vector<gd::String> GetAllSearchableStrings() const;
+
   virtual void SerializeTo(SerializerElement& element) const;
   virtual void UnserializeFrom(gd::Project& project,
                                const SerializerElement& element);

Core/GDCore/Events/Builtin/ForEachEvent.cpp

@@ -5,10 +5,6 @@
  */
 
 #include "ForEachEvent.h"
-#include <iostream>
-#include "GDCore/Events/CodeGeneration/EventsCodeGenerationContext.h"
-#include "GDCore/Events/CodeGeneration/EventsCodeGenerator.h"
-#include "GDCore/Events/CodeGeneration/ExpressionsCodeGeneration.h"
 #include "GDCore/Events/Serialization.h"
 #include "GDCore/Events/Tools/EventsCodeNameMangler.h"
 #include "GDCore/Serialization/SerializerElement.h"
@@ -35,12 +31,17 @@ vector<gd::InstructionsList*> ForEachEvent::GetAllActionsVectors() {
   return allActions;
 }
 
-vector<gd::Expression*> ForEachEvent::GetAllExpressions() {
-  vector<gd::Expression*> allExpressions;
-  allExpressions.push_back(&objectsToPick);
+vector<pair<gd::Expression*, gd::ParameterMetadata> >
+    ForEachEvent::GetAllExpressionsWithMetadata() {
+  vector<pair<gd::Expression*, gd::ParameterMetadata> >
+      allExpressionsWithMetadata;
+  auto metadata = gd::ParameterMetadata().SetType("object");
+  allExpressionsWithMetadata.push_back(
+      std::make_pair(&objectsToPick, metadata));
 
-  return allExpressions;
+  return allExpressionsWithMetadata;
 }
+
 vector<const gd::InstructionsList*> ForEachEvent::GetAllConditionsVectors()
     const {
   vector<const gd::InstructionsList*> allConditions;
@@ -56,11 +57,15 @@ vector<const gd::InstructionsList*> ForEachEvent::GetAllActionsVectors() const {
   return allActions;
 }
 
-vector<const gd::Expression*> ForEachEvent::GetAllExpressions() const {
-  vector<const gd::Expression*> allExpressions;
-  allExpressions.push_back(&objectsToPick);
+vector<pair<const gd::Expression*, const gd::ParameterMetadata> >
+    ForEachEvent::GetAllExpressionsWithMetadata() const {
+  vector<pair<const gd::Expression*, const gd::ParameterMetadata> >
+      allExpressionsWithMetadata;
+  auto metadata = gd::ParameterMetadata().SetType("object");
+  allExpressionsWithMetadata.push_back(
+      std::make_pair(&objectsToPick, metadata));
 
-  return allExpressions;
+  return allExpressionsWithMetadata;
 }
 
 void ForEachEvent::SerializeTo(SerializerElement& element) const {

Core/GDCore/Events/Builtin/ForEachEvent.h

@@ -50,10 +50,13 @@ class GD_CORE_API ForEachEvent : public gd::BaseEvent {
   virtual std::vector<const gd::InstructionsList*> GetAllConditionsVectors()
       const;
   virtual std::vector<const gd::InstructionsList*> GetAllActionsVectors() const;
-  virtual std::vector<const gd::Expression*> GetAllExpressions() const;
+  virtual std::vector<std::pair<const gd::Expression*, const gd::ParameterMetadata> >
+      GetAllExpressionsWithMetadata() const;
+
   virtual std::vector<gd::InstructionsList*> GetAllConditionsVectors();
   virtual std::vector<gd::InstructionsList*> GetAllActionsVectors();
-  virtual std::vector<gd::Expression*> GetAllExpressions();
+  virtual std::vector<std::pair<gd::Expression*, gd::ParameterMetadata> >
+      GetAllExpressionsWithMetadata();
 
   virtual void SerializeTo(SerializerElement& element) const;
   virtual void UnserializeFrom(gd::Project& project,

Core/GDCore/Events/Builtin/GroupEvent.cpp

@@ -19,6 +19,14 @@ namespace gd {
 GroupEvent::GroupEvent()
     : BaseEvent(), creationTime(0), colorR(74), colorG(176), colorB(228) {}
 
+vector<gd::String> GroupEvent::GetAllSearchableStrings() const {
+  vector<gd::String> allSearchableStrings;
+
+  allSearchableStrings.push_back(name);
+
+  return allSearchableStrings;
+}
+
 void GroupEvent::SerializeTo(SerializerElement& element) const {
   element.SetAttribute("name", name);
   element.SetAttribute("source", source);

Core/GDCore/Events/Builtin/GroupEvent.h

@@ -106,6 +106,8 @@ class GD_CORE_API GroupEvent : public gd::BaseEvent {
   virtual const gd::EventsList& GetSubEvents() const { return events; };
   virtual gd::EventsList& GetSubEvents() { return events; };
 
+  virtual std::vector<gd::String> GetAllSearchableStrings() const;
+
   virtual void SerializeTo(SerializerElement& element) const;
   virtual void UnserializeFrom(gd::Project& project,
                                const SerializerElement& element);

Core/GDCore/Events/Builtin/RepeatEvent.cpp

@@ -5,9 +5,6 @@
  */
 
 #include "RepeatEvent.h"
-#include "GDCore/Events/CodeGeneration/EventsCodeGenerationContext.h"
-#include "GDCore/Events/CodeGeneration/EventsCodeGenerator.h"
-#include "GDCore/Events/CodeGeneration/ExpressionsCodeGeneration.h"
 #include "GDCore/Events/Serialization.h"
 #include "GDCore/Serialization/SerializerElement.h"
 
@@ -34,11 +31,15 @@ vector<gd::InstructionsList*> RepeatEvent::GetAllActionsVectors() {
   return allActions;
 }
 
-vector<gd::Expression*> RepeatEvent::GetAllExpressions() {
-  vector<gd::Expression*> allExpressions;
-  allExpressions.push_back(&repeatNumberExpression);
+vector<pair<gd::Expression*, gd::ParameterMetadata> >
+    RepeatEvent::GetAllExpressionsWithMetadata() {
+  vector<pair<gd::Expression*, gd::ParameterMetadata> >
+      allExpressionsWithMetadata;
+  auto metadata = gd::ParameterMetadata().SetType("expression");
+  allExpressionsWithMetadata.push_back(
+      std::make_pair(&repeatNumberExpression, metadata));
 
-  return allExpressions;
+  return allExpressionsWithMetadata;
 }
 
 vector<const gd::InstructionsList*> RepeatEvent::GetAllConditionsVectors()
@@ -56,11 +57,15 @@ vector<const gd::InstructionsList*> RepeatEvent::GetAllActionsVectors() const {
   return allActions;
 }
 
-vector<const gd::Expression*> RepeatEvent::GetAllExpressions() const {
-  vector<const gd::Expression*> allExpressions;
-  allExpressions.push_back(&repeatNumberExpression);
+vector<pair<const gd::Expression*, const gd::ParameterMetadata> >
+    RepeatEvent::GetAllExpressionsWithMetadata() const {
+  vector<pair<const gd::Expression*, const gd::ParameterMetadata> >
+      allExpressionsWithMetadata;
+  auto metadata = gd::ParameterMetadata().SetType("expression");
+  allExpressionsWithMetadata.push_back(
+      std::make_pair(&repeatNumberExpression, metadata));
 
-  return allExpressions;
+  return allExpressionsWithMetadata;
 }
 
 void RepeatEvent::SerializeTo(SerializerElement& element) const {

Core/GDCore/Events/Builtin/RepeatEvent.h

@@ -45,11 +45,14 @@ class GD_CORE_API RepeatEvent : public gd::BaseEvent {
 
   virtual std::vector<gd::InstructionsList*> GetAllConditionsVectors();
   virtual std::vector<gd::InstructionsList*> GetAllActionsVectors();
-  virtual std::vector<gd::Expression*> GetAllExpressions();
+  virtual std::vector<std::pair<gd::Expression*, gd::ParameterMetadata> >
+      GetAllExpressionsWithMetadata();
+
   virtual std::vector<const gd::InstructionsList*> GetAllConditionsVectors()
       const;
   virtual std::vector<const gd::InstructionsList*> GetAllActionsVectors() const;
-  virtual std::vector<const gd::Expression*> GetAllExpressions() const;
+  virtual std::vector<std::pair<const gd::Expression*, const gd::ParameterMetadata> >
+      GetAllExpressionsWithMetadata() const;
 
   virtual void SerializeTo(SerializerElement& element) const;
   virtual void UnserializeFrom(gd::Project& project,

Core/GDCore/Events/Builtin/WhileEvent.cpp

@@ -6,9 +6,6 @@
 
 #if defined(GD_IDE_ONLY)
 #include "WhileEvent.h"
-#include "GDCore/Events/CodeGeneration/EventsCodeGenerationContext.h"
-#include "GDCore/Events/CodeGeneration/EventsCodeGenerator.h"
-#include "GDCore/Events/CodeGeneration/ExpressionsCodeGeneration.h"
 #include "GDCore/Events/Serialization.h"
 #include "GDCore/Serialization/SerializerElement.h"
 

Core/GDCore/Events/CodeGeneration/EventsCodeGenerator.cpp

@@ -1,11 +1,11 @@
 #include "GDCore/Events/CodeGeneration/EventsCodeGenerator.h"
+
 #include <algorithm>
 #include <utility>
+
 #include "GDCore/CommonTools.h"
 #include "GDCore/Events/CodeGeneration/EventsCodeGenerationContext.h"
 #include "GDCore/Events/CodeGeneration/ExpressionCodeGenerator.h"
-#include "GDCore/Events/CodeGeneration/ExpressionsCodeGeneration.h"
-#include "GDCore/Events/Parsers/ExpressionParser.h"
 #include "GDCore/Events/Tools/EventsCodeNameMangler.h"
 #include "GDCore/Extensions/Metadata/BehaviorMetadata.h"
 #include "GDCore/Extensions/Metadata/InstructionMetadata.h"
@@ -630,7 +630,7 @@ gd::String EventsCodeGenerator::GenerateParameterCodes(
 
     argOutput = "\"" + argOutput + "\"";
   } else if (ParameterMetadata::IsBehavior(metadata.type)) {
-    argOutput = "\"" + ConvertToString(parameter) + "\"";
+    argOutput = GenerateGetBehaviorNameCode(parameter);
   } else if (metadata.type == "key") {
     argOutput = "\"" + ConvertToString(parameter) + "\"";
   } else if (metadata.type == "password" || metadata.type == "musicfile" ||
@@ -662,7 +662,7 @@ gd::String EventsCodeGenerator::GenerateParameterCodes(
     if (argOutput.empty()) {
       if (!metadata.type.empty())
         cout << "Warning: Unknown type of parameter \"" << metadata.type
-             << "\".";
+             << "\"." << std::endl;
       argOutput += "\"" + ConvertToString(parameter) + "\"";
     }
   }
@@ -1111,6 +1111,33 @@ gd::String EventsCodeGenerator::GenerateBehaviorAction(
   }
 }
 
+size_t EventsCodeGenerator::GenerateSingleUsageUniqueIdForEventsList() {
+  return eventsListNextUniqueId++;
+}
+
+size_t EventsCodeGenerator::GenerateSingleUsageUniqueIdFor(
+    const Instruction* instruction) {
+  if (!instruction) {
+    std::cout << "ERROR: During code generation, a null pointer was passed to "
+                 "GenerateSingleUsageUniqueIdFor."
+              << std::endl;
+  }
+
+  // Base the unique id on the adress in memory so that the same instruction
+  // in memory will get the same id across different code generations.
+  size_t uniqueId = (size_t)instruction;
+
+  // While in most case this function is called a single time for each instruction,
+  // it's possible for an instruction to be appearing more than once in the events,
+  // if we used links. In this case, simply increment the unique id to be sure that
+  // ids are effectively uniques, and stay stable (given the same order of links).
+  while (instructionUniqueIds.find(uniqueId) != instructionUniqueIds.end()) {
+    uniqueId++;
+  }
+  instructionUniqueIds.insert(uniqueId);
+  return uniqueId;
+}
+
 gd::String EventsCodeGenerator::GetObjectListName(
     const gd::String& name, const gd::EventsCodeGenerationContext& context) {
   return ManObjListName(name);
@@ -1139,7 +1166,8 @@ EventsCodeGenerator::EventsCodeGenerator(gd::Project& project_,
       errorOccurred(false),
       compilationForRuntime(false),
       maxCustomConditionsDepth(0),
-      maxConditionsListsSize(0){};
+      maxConditionsListsSize(0),
+      eventsListNextUniqueId(0){};
 
 EventsCodeGenerator::EventsCodeGenerator(
     const gd::Platform& platform_,
@@ -1154,6 +1182,7 @@ EventsCodeGenerator::EventsCodeGenerator(
       errorOccurred(false),
       compilationForRuntime(false),
       maxCustomConditionsDepth(0),
-      maxConditionsListsSize(0){};
+      maxConditionsListsSize(0),
+      eventsListNextUniqueId(0){};
 
 }  // namespace gd

Core/GDCore/Events/CodeGeneration/EventsCodeGenerator.h

@@ -9,6 +9,7 @@
 #include <set>
 #include <utility>
 #include <vector>
+
 #include "GDCore/Events/Event.h"
 #include "GDCore/Events/Instruction.h"
 #include "GDCore/String.h"
@@ -35,10 +36,6 @@ namespace gd {
  * \brief Internal class used to generate code from events
  */
 class GD_CORE_API EventsCodeGenerator {
-  // Compatiblity with old ExpressionParser
-  friend class CallbacksForGeneratingExpressionCode;
-  friend class VariableCodeGenerationCallbacks;
-  // end of compatibility code
   friend class ExpressionCodeGenerator;
 
  public:
@@ -127,7 +124,7 @@ class GD_CORE_API EventsCodeGenerator {
    *
    */
   std::vector<gd::String> GenerateParametersCodes(
-      const std::vector<gd::Expression> & parameters,
+      const std::vector<gd::Expression>& parameters,
       const std::vector<gd::ParameterMetadata>& parametersInfo,
       EventsCodeGenerationContext& context,
       std::vector<std::pair<gd::String, gd::String> >*
@@ -325,7 +322,7 @@ class GD_CORE_API EventsCodeGenerator {
    * group.
    *
    * Get a list containing the "real" objects name when the events refers to \a
-   * objectName :<br> If \a objectName if really an object, the list will only
+   * objectName :<br> If \a objectName is really an object, the list will only
    * contains \a objectName unchanged.<br> If \a objectName is a group, the list
    * will contains all the objects of the group.<br> If \a objectName is the
    * "current" object in the context ( i.e: The object being used for launching
@@ -415,6 +412,29 @@ class GD_CORE_API EventsCodeGenerator {
 
   enum VariableScope { LAYOUT_VARIABLE = 0, PROJECT_VARIABLE, OBJECT_VARIABLE };
 
+  /**
+   * Generate a single unique number for the specified instruction.
+   *
+   * This is useful for instructions that need to identify themselves in the
+   * generated code like the "Trigger Once" conditions. The id is stable across
+   * code generations if the instructions are the same objects in memory.
+   *
+   * Note that if this function is called multiple times with the same
+   * instruction, the unique number returned will be *different*. This is
+   * because a single instruction might appear at multiple places in events due
+   * to the usage of links.
+   */
+  size_t GenerateSingleUsageUniqueIdFor(const gd::Instruction* instruction);
+
+  /**
+   * Generate a single unique number for an events list.
+   *
+   * This is useful to create unique function names for events list, that are
+   * stable across code generation given the exact same list of events. They are
+   * *not* stable if events are moved/reorganized.
+   */
+  size_t GenerateSingleUsageUniqueIdForEventsList();
+
  protected:
   /**
    * \brief Generate the code for a single parameter.
@@ -708,7 +728,8 @@ class GD_CORE_API EventsCodeGenerator {
   /**
    * Generate the getter to get the name of the specified behavior.
    */
-  virtual gd::String GenerateGetBehaviorNameCode(const gd::String& behaviorName);
+  virtual gd::String GenerateGetBehaviorNameCode(
+      const gd::String& behaviorName);
 
   const gd::Platform& platform;  ///< The platform being used.
 
@@ -736,6 +757,11 @@ class GD_CORE_API EventsCodeGenerator {
   size_t maxCustomConditionsDepth;  ///< The maximum depth value for all the
                                     ///< custom conditions created.
   size_t maxConditionsListsSize;  ///< The maximum size of a list of conditions.
+
+  std::set<size_t>
+      instructionUniqueIds;  ///< The unique ids generated for instructions.
+  size_t eventsListNextUniqueId;  ///< The next identifier to use for an events
+                                  ///< list function name.
 };
 
 }  // namespace gd

Core/GDCore/Events/CodeGeneration/ExpressionCodeGenerator.cpp

@@ -24,117 +24,14 @@
 #include "GDCore/Project/Layout.h"
 #include "GDCore/Project/Project.h"
 
-// Compatibility with old ExpressionParser
-#include "GDCore/Events/CodeGeneration/ExpressionsCodeGeneration.h"
-#include "GDCore/Events/CodeGeneration/VariableParserCallbacks.h"
-#include "GDCore/Events/Parsers/ExpressionParser.h"
-#include "GDCore/Events/Parsers/VariableParser.h"
-// end of compatibility code
-
 namespace gd {
 
-bool ExpressionCodeGenerator::useOldExpressionParser = false;
-
 gd::String ExpressionCodeGenerator::GenerateExpressionCode(
     EventsCodeGenerator& codeGenerator,
     EventsCodeGenerationContext& context,
     const gd::String& type,
     const gd::String& expression,
     const gd::String& objectName) {
-  // Compatibility with old ExpressionParser
-  if (useOldExpressionParser) {
-    if (type == "number") {
-      gd::String code = "";
-      gd::CallbacksForGeneratingExpressionCode callbacks(
-          code, codeGenerator, context);
-      gd::ExpressionParser parser(expression);
-      if (!parser.ParseMathExpression(codeGenerator.GetPlatform(),
-                                      codeGenerator.GetGlobalObjectsAndGroups(),
-                                      codeGenerator.GetObjectsAndGroups(),
-                                      callbacks) ||
-          code.empty()) {
-        std::cout << "Error (old ExpressionParser): \""
-                  << parser.GetFirstError() << "\" in: \"" << expression
-                  << "\" (number)" << std::endl;
-        code = "0";
-      }
-
-      return code;
-    } else if (type == "string") {
-      gd::String code = "";
-      gd::CallbacksForGeneratingExpressionCode callbacks(
-          code, codeGenerator, context);
-      gd::ExpressionParser parser(expression);
-      if (!parser.ParseStringExpression(
-              codeGenerator.GetPlatform(),
-              codeGenerator.GetGlobalObjectsAndGroups(),
-              codeGenerator.GetObjectsAndGroups(),
-              callbacks) ||
-          code.empty()) {
-        std::cout << "Error (old ExpressionParser): \""
-                  << parser.GetFirstError() << "\" in: \"" << expression
-                  << "\" (string)" << std::endl;
-        code = "\"\"";
-      }
-
-      return code;
-    } else if (type == "scenevar") {
-      gd::String code = "";
-      gd::VariableCodeGenerationCallbacks callbacks(
-          code,
-          codeGenerator,
-          context,
-          gd::EventsCodeGenerator::LAYOUT_VARIABLE);
-
-      gd::VariableParser parser(expression);
-      if (!parser.Parse(callbacks)) {
-        std::cout << "Error (old VariableParser) :" << parser.GetFirstError()
-                  << " in: " << expression << std::endl;
-        code = codeGenerator.GenerateBadVariable();
-      }
-      return code;
-    } else if (type == "globalvar") {
-      gd::String code = "";
-      gd::VariableCodeGenerationCallbacks callbacks(
-          code,
-          codeGenerator,
-          context,
-          gd::EventsCodeGenerator::PROJECT_VARIABLE);
-
-      gd::VariableParser parser(expression);
-      if (!parser.Parse(callbacks)) {
-        std::cout << "Error (old VariableParser) :" << parser.GetFirstError()
-                  << " in: " << expression << std::endl;
-        code = codeGenerator.GenerateBadVariable();
-      }
-      return code;
-    } else if (type == "objectvar") {
-      gd::String code = "";
-
-      // Object is either the object of the previous parameter or, if it is
-      // empty, the object being picked by the instruction.
-      gd::String object =
-          objectName.empty() ? context.GetCurrentObject() : objectName;
-
-      gd::VariableCodeGenerationCallbacks callbacks(
-          code, codeGenerator, context, object);
-
-      gd::VariableParser parser(expression);
-      if (!parser.Parse(callbacks)) {
-        std::cout << "Error (old VariableParser) :" << parser.GetFirstError()
-                  << " in: " << expression << std::endl;
-        code = codeGenerator.GenerateBadVariable();
-      }
-      return code;
-    }
-
-    std::cout << "Type error (old ExpressionParser): type \"" << type
-              << "\" is not supported" << std::endl;
-    return "/* Error during code generation: type " + type +
-           " is not supported for old ExpressionParser. */ 0";
-  }
-  // end of compatibility code
-
   gd::ExpressionParser2 parser(codeGenerator.GetPlatform(),
                                codeGenerator.GetGlobalObjectsAndGroups(),
                                codeGenerator.GetObjectsAndGroups());
@@ -230,7 +127,7 @@ void ExpressionCodeGenerator::OnVisitIdentifierNode(IdentifierNode& node) {
   }
 }
 
-void ExpressionCodeGenerator::OnVisitFunctionNode(FunctionNode& node) {
+void ExpressionCodeGenerator::OnVisitFunctionCallNode(FunctionCallNode& node) {
   if (gd::MetadataProvider::IsBadExpressionMetadata(node.expressionMetadata)) {
     output += "/* Error during generation, function not found: " +
               codeGenerator.ConvertToString(node.functionName) + " for type " +
@@ -462,4 +359,8 @@ void ExpressionCodeGenerator::OnVisitEmptyNode(EmptyNode& node) {
   output += GenerateDefaultValue(node.type);
 }
 
+void ExpressionCodeGenerator::OnVisitObjectFunctionNameNode(ObjectFunctionNameNode& node) {
+  output += GenerateDefaultValue(node.type);
+}
+
 }  // namespace gd

Core/GDCore/Events/CodeGeneration/ExpressionCodeGenerator.h

@@ -60,11 +60,6 @@ class GD_CORE_API ExpressionCodeGenerator : public ExpressionParser2NodeWorker {
                                            const gd::String& expression,
                                            const gd::String& objectName = "");
 
-  static void UseOldExpressionParser(bool enable) {
-    useOldExpressionParser = enable;
-  };
-  static bool IsUsingOldExpressionParser() { return useOldExpressionParser; };
-
   const gd::String& GetOutput() { return output; };
 
  protected:
@@ -78,7 +73,8 @@ class GD_CORE_API ExpressionCodeGenerator : public ExpressionParser2NodeWorker {
   void OnVisitVariableBracketAccessorNode(
       VariableBracketAccessorNode& node) override;
   void OnVisitIdentifierNode(IdentifierNode& node) override;
-  void OnVisitFunctionNode(FunctionNode& node) override;
+  void OnVisitObjectFunctionNameNode(ObjectFunctionNameNode& node) override;
+  void OnVisitFunctionCallNode(FunctionCallNode& node) override;
   void OnVisitEmptyNode(EmptyNode& node) override;
 
  private:
@@ -107,11 +103,9 @@ class GD_CORE_API ExpressionCodeGenerator : public ExpressionParser2NodeWorker {
   gd::String output;
   EventsCodeGenerator& codeGenerator;
   EventsCodeGenerationContext& context;
-
-  static bool useOldExpressionParser;
 };
 
 }  // namespace gd
 
 #endif  // GDCORE_ExpressionCodeGenerator_H
-#endif
+#endif

Core/GDCore/Events/CodeGeneration/ExpressionsCodeGeneration.cpp

@@ -1,229 +0,0 @@
-/*
- * GDevelop Core
- * Copyright 2008-2016 Florian Rival (Florian.Rival@gmail.com). All rights
- * reserved. This project is released under the MIT License.
- */
-#include "ExpressionsCodeGeneration.h"
-#include "GDCore/CommonTools.h"
-#include "GDCore/Events/CodeGeneration/EventsCodeGenerationContext.h"
-#include "GDCore/Events/CodeGeneration/EventsCodeGenerator.h"
-#include "GDCore/Events/Parsers/ExpressionParser.h"
-#include "GDCore/Events/Tools/EventsCodeNameMangler.h"
-#include "GDCore/Extensions/Metadata/BehaviorMetadata.h"
-#include "GDCore/Extensions/Metadata/ExpressionMetadata.h"
-#include "GDCore/Extensions/Metadata/MetadataProvider.h"
-#include "GDCore/Extensions/Metadata/ObjectMetadata.h"
-#include "GDCore/Extensions/Platform.h"
-#include "GDCore/Extensions/PlatformExtension.h"
-#include "GDCore/Project/Layout.h"
-#include "GDCore/Project/Project.h"
-
-using namespace std;
-
-namespace gd {
-
-CallbacksForGeneratingExpressionCode::CallbacksForGeneratingExpressionCode(
-    gd::String& plainExpression_,
-    EventsCodeGenerator& codeGenerator_,
-    EventsCodeGenerationContext& context_)
-    : plainExpression(plainExpression_),
-      codeGenerator(codeGenerator_),
-      context(context_) {}
-
-void CallbacksForGeneratingExpressionCode::OnConstantToken(gd::String text) {
-  plainExpression += text;
-};
-
-void CallbacksForGeneratingExpressionCode::OnStaticFunction(
-    gd::String functionName,
-    const std::vector<gd::Expression>& parameters,
-    const gd::ExpressionMetadata& expressionInfo) {
-  codeGenerator.AddIncludeFiles(
-      expressionInfo.codeExtraInformation.GetIncludeFiles());
-
-  // Launch custom code generator if needed
-  if (expressionInfo.codeExtraInformation.HasCustomCodeGenerator()) {
-    plainExpression += expressionInfo.codeExtraInformation.customCodeGenerator(
-        parameters, codeGenerator, context);
-    return;
-  }
-
-  // Special case: For strings expressions, function without name is a string.
-  if (GetReturnType() == "string" && functionName.empty()) {
-    if (parameters.empty()) return;
-    plainExpression +=
-        codeGenerator.ConvertToStringExplicit(parameters[0].GetPlainString());
-
-    return;
-  }
-
-  // Prepare parameters
-  std::vector<gd::String> parametersCode =
-      codeGenerator.GenerateParametersCodes(
-          parameters, expressionInfo.parameters, context);
-  gd::String parametersStr;
-  for (std::size_t i = 0; i < parametersCode.size(); ++i) {
-    if (i != 0) parametersStr += ", ";
-    parametersStr += parametersCode[i];
-  }
-
-  plainExpression += expressionInfo.codeExtraInformation.functionCallName +
-                     "(" + parametersStr + ")";
-};
-
-void CallbacksForGeneratingExpressionCode::OnObjectFunction(
-    gd::String functionName,
-    const std::vector<gd::Expression>& parameters,
-    const gd::ExpressionMetadata& expressionInfo) {
-  const gd::ObjectsContainer& globalObjectsAndGroups = codeGenerator.GetGlobalObjectsAndGroups();
-  const gd::ObjectsContainer& objectsAndGroups = codeGenerator.GetObjectsAndGroups();
-
-  codeGenerator.AddIncludeFiles(
-      expressionInfo.codeExtraInformation.GetIncludeFiles());
-  if (parameters.empty()) return;
-
-  // Launch custom code generator if needed
-  if (expressionInfo.codeExtraInformation.HasCustomCodeGenerator()) {
-    plainExpression += expressionInfo.codeExtraInformation.customCodeGenerator(
-        parameters, codeGenerator, context);
-    return;
-  }
-
-  // Prepare parameters
-  std::vector<gd::String> parametersCode =
-      codeGenerator.GenerateParametersCodes(
-          parameters, expressionInfo.parameters, context);
-  gd::String parametersStr;
-  for (std::size_t i = 1; i < parametersCode.size(); ++i) {
-    if (i != 1) parametersStr += ", ";
-    parametersStr += parametersCode[i];
-  }
-
-  gd::String output = GetReturnType() == "string" ? "\"\"" : "0";
-
-  // Get object(s) concerned by function call
-  std::vector<gd::String> realObjects =
-      codeGenerator.ExpandObjectsName(parameters[0].GetPlainString(), context);
-  for (std::size_t i = 0; i < realObjects.size(); ++i) {
-    context.ObjectsListNeeded(realObjects[i]);
-
-    gd::String objectType = gd::GetTypeOfObject(globalObjectsAndGroups, objectsAndGroups, realObjects[i]);
-    const ObjectMetadata& objInfo = MetadataProvider::GetObjectMetadata(
-        codeGenerator.GetPlatform(), objectType);
-
-    // Build gd::String to access the object
-    codeGenerator.AddIncludeFiles(objInfo.includeFiles);
-    output = codeGenerator.GenerateObjectFunctionCall(
-        realObjects[i],
-        objInfo,
-        expressionInfo.codeExtraInformation,
-        parametersStr,
-        output,
-        context);
-  }
-
-  plainExpression += output;
-};
-
-void CallbacksForGeneratingExpressionCode::OnObjectBehaviorFunction(
-    gd::String functionName,
-    const std::vector<gd::Expression>& parameters,
-    const gd::ExpressionMetadata& expressionInfo) {
-  const gd::ObjectsContainer& globalObjectsAndGroups = codeGenerator.GetGlobalObjectsAndGroups();
-  const gd::ObjectsContainer& objectsAndGroups = codeGenerator.GetObjectsAndGroups();
-
-  codeGenerator.AddIncludeFiles(
-      expressionInfo.codeExtraInformation.GetIncludeFiles());
-  if (parameters.size() < 2) return;
-
-  // Launch custom code generator if needed
-  if (expressionInfo.codeExtraInformation.HasCustomCodeGenerator()) {
-    plainExpression += expressionInfo.codeExtraInformation.customCodeGenerator(
-        parameters, codeGenerator, context);
-    return;
-  }
-
-  // Prepare parameters
-  std::vector<gd::String> parametersCode =
-      codeGenerator.GenerateParametersCodes(
-          parameters, expressionInfo.parameters, context);
-  gd::String parametersStr;
-  for (std::size_t i = 2; i < parametersCode.size(); ++i) {
-    if (i != 2) parametersStr += ", ";
-    parametersStr += parametersCode[i];
-  }
-
-  // Get object(s) concerned by function call
-  std::vector<gd::String> realObjects =
-      codeGenerator.ExpandObjectsName(parameters[0].GetPlainString(), context);
-
-  gd::String output = GetReturnType() == "string" ? "\"\"" : "0";
-  for (std::size_t i = 0; i < realObjects.size(); ++i) {
-    context.ObjectsListNeeded(realObjects[i]);
-
-    // Cast the object if needed
-    gd::String behaviorType =
-        gd::GetTypeOfBehavior(globalObjectsAndGroups, objectsAndGroups, parameters[1].GetPlainString());
-    const BehaviorMetadata& autoInfo = MetadataProvider::GetBehaviorMetadata(
-        codeGenerator.GetPlatform(), behaviorType);
-
-    // Build gd::String to access the behavior
-    codeGenerator.AddIncludeFiles(autoInfo.includeFiles);
-    output = codeGenerator.GenerateObjectBehaviorFunctionCall(
-        realObjects[i],
-        parameters[1].GetPlainString(),
-        autoInfo,
-        expressionInfo.codeExtraInformation,
-        parametersStr,
-        output,
-        context);
-  }
-
-  plainExpression += output;
-};
-
-bool CallbacksForGeneratingExpressionCode::OnSubMathExpression(
-    const gd::Platform& platform,
-    const gd::ObjectsContainer& globalObjectsAndGroups,
-    const gd::ObjectsContainer& objectsAndGroups,
-    gd::Expression& expression) {
-  gd::String newExpression;
-
-  CallbacksForGeneratingExpressionCode callbacks(
-      newExpression, codeGenerator, context);
-
-  gd::ExpressionParser parser(expression.GetPlainString());
-  if (!parser.ParseMathExpression(platform, globalObjectsAndGroups, objectsAndGroups, callbacks)) {
-#if defined(GD_IDE_ONLY)
-    firstErrorStr = callbacks.GetFirstError();
-    firstErrorPos = callbacks.GetFirstErrorPosition();
-#endif
-    return false;
-  }
-
-  return true;
-}
-
-bool CallbacksForGeneratingExpressionCode::OnSubTextExpression(
-    const gd::Platform& platform,
-    const gd::ObjectsContainer& globalObjectsAndGroups,
-    const gd::ObjectsContainer& objectsAndGroups,
-    gd::Expression& expression) {
-  gd::String newExpression;
-
-  CallbacksForGeneratingExpressionCode callbacks(
-      newExpression, codeGenerator, context);
-
-  gd::ExpressionParser parser(expression.GetPlainString());
-  if (!parser.ParseStringExpression(platform, globalObjectsAndGroups, objectsAndGroups, callbacks)) {
-#if defined(GD_IDE_ONLY)
-    firstErrorStr = callbacks.GetFirstError();
-    firstErrorPos = callbacks.GetFirstErrorPosition();
-#endif
-    return false;
-  }
-
-  return true;
-}
-
-}  // namespace gd

Core/GDCore/Events/CodeGeneration/ExpressionsCodeGeneration.h

@@ -1,77 +0,0 @@
-/*
- * GDevelop Core
- * Copyright 2008-2016 Florian Rival (Florian.Rival@gmail.com). All rights
- * reserved. This project is released under the MIT License.
- */
-#ifndef EXPRESSIONSCODEGENERATION_H
-#define EXPRESSIONSCODEGENERATION_H
-
-#include <vector>
-#include "GDCore/Events/Parsers/ExpressionParser.h"
-#include "GDCore/String.h"
-namespace gd {
-class ExpressionMetadata;
-class Expression;
-class Project;
-class Layout;
-class Layout;
-class EventsCodeGenerationContext;
-class EventsCodeGenerator;
-}
-
-namespace gd {
-
-// TODO: Replace and remove (ExpressionCodeGenerator)
-
-/**
- * \brief Used to generate code from expressions.
- *
- * Usage example :
- * \code
- *   gd::String expressionOutputCppCode;
- *
- *   CallbacksForGeneratingExpressionCode callbacks(expressionOutputCppCode,
- * codeGenerator, context); gd::ExpressionParser
- * parser(theOriginalGameDevelopExpression);
- *   parser.ParseStringExpression(platform, project, scene, callbacks);
- *
- *   if (expressionOutputCppCode.empty()) expressionOutputCppCode = "\"\""; //If
- * generation failed, we make sure output code is not empty. \endcode \see
- * EventsCodeGenerator
- */
-class GD_CORE_API CallbacksForGeneratingExpressionCode
-    : public gd::ParserCallbacks {
- public:
-  CallbacksForGeneratingExpressionCode(gd::String& output,
-                                       EventsCodeGenerator& codeGenerator_,
-                                       EventsCodeGenerationContext& context_);
-  virtual ~CallbacksForGeneratingExpressionCode(){};
-
-  void OnConstantToken(gd::String text);
-  void OnStaticFunction(gd::String functionName,
-                        const std::vector<gd::Expression>& parameters,
-                        const gd::ExpressionMetadata& expressionInfo);
-  void OnObjectFunction(gd::String functionName,
-                        const std::vector<gd::Expression>& parameters,
-                        const gd::ExpressionMetadata& expressionInfo);
-  void OnObjectBehaviorFunction(gd::String functionName,
-                                const std::vector<gd::Expression>& parameters,
-                                const gd::ExpressionMetadata& expressionInfo);
-  bool OnSubMathExpression(const gd::Platform& platform,
-                           const gd::ObjectsContainer& project,
-                           const gd::ObjectsContainer& layout,
-                           gd::Expression& expression);
-  bool OnSubTextExpression(const gd::Platform& platform,
-                           const gd::ObjectsContainer& project,
-                           const gd::ObjectsContainer& layout,
-                           gd::Expression& expression);
-
- private:
-  gd::String& plainExpression;
-  EventsCodeGenerator& codeGenerator;
-  EventsCodeGenerationContext& context;
-};
-
-}  // namespace gd
-
-#endif  // EXPRESSIONSCODEGENERATION_H

Core/GDCore/Events/CodeGeneration/VariableParserCallbacks.cpp

@@ -1,68 +0,0 @@
-/*
- * GDevelop C++ Platform
- * Copyright 2008-2016 Florian Rival (Florian.Rival@gmail.com). All rights
- * reserved. This project is released under the MIT License.
- */
-#if defined(GD_IDE_ONLY)
-#include "VariableParserCallbacks.h"
-#include <string>
-#include <vector>
-#include "GDCore/Events/CodeGeneration/EventsCodeGenerationContext.h"
-#include "GDCore/Events/CodeGeneration/EventsCodeGenerator.h"
-#include "GDCore/Events/CodeGeneration/ExpressionCodeGenerator.h"
-#include "GDCore/Events/Parsers/VariableParser.h"
-#include "GDCore/Extensions/Metadata/MetadataProvider.h"
-#include "GDCore/Extensions/Metadata/ObjectMetadata.h"
-#include "GDCore/Extensions/Platform.h"
-#include "GDCore/Project/Layout.h"
-#include "GDCore/Project/Object.h"
-#include "GDCore/Project/Project.h"
-
-using namespace std;
-
-namespace gd {
-
-VariableCodeGenerationCallbacks::VariableCodeGenerationCallbacks(
-    gd::String& output_,
-    gd::EventsCodeGenerator& codeGenerator_,
-    gd::EventsCodeGenerationContext& context_,
-    const gd::EventsCodeGenerator::VariableScope& scope_)
-    : output(output_),
-      codeGenerator(codeGenerator_),
-      context(context_),
-      scope(scope_) {
-  if (scope == gd::EventsCodeGenerator::OBJECT_VARIABLE) {
-    std::cout << "ERROR: Initializing VariableCodeGenerationCallbacks with "
-                 "OBJECT_VARIABLE without object.";
-  }
-}
-
-VariableCodeGenerationCallbacks::VariableCodeGenerationCallbacks(
-    gd::String& output_,
-    gd::EventsCodeGenerator& codeGenerator_,
-    gd::EventsCodeGenerationContext& context_,
-    const gd::String& object_)
-    : output(output_),
-      codeGenerator(codeGenerator_),
-      context(context_),
-      scope(gd::EventsCodeGenerator::OBJECT_VARIABLE),
-      object(object_) {}
-
-void VariableCodeGenerationCallbacks::OnRootVariable(gd::String variableName) {
-  output += codeGenerator.GenerateGetVariable(variableName, scope, context, object);
-}
-
-void VariableCodeGenerationCallbacks::OnChildVariable(gd::String variableName) {
-  output += codeGenerator.GenerateVariableAccessor(variableName);
-}
-
-void VariableCodeGenerationCallbacks::OnChildSubscript(
-    gd::String stringExpression) {
-  gd::String argumentCode = gd::ExpressionCodeGenerator::GenerateExpressionCode(
-      codeGenerator, context, "string", stringExpression);
-
-  output += codeGenerator.GenerateVariableBracketAccessor(argumentCode);
-}
-
-}
-#endif

Core/GDCore/Events/CodeGeneration/VariableParserCallbacks.h

@@ -1,97 +0,0 @@
-/*
- * GDevelop C++ Platform
- * Copyright 2008-2016 Florian Rival (Florian.Rival@gmail.com). All rights
- * reserved. This project is released under the MIT License.
- */
-#if defined(GD_IDE_ONLY)
-#ifndef VARIABLEPARSERCALLBACKS_H
-#define VARIABLEPARSERCALLBACKS_H
-
-#include <string>
-#include <vector>
-#include "GDCore/Events/Parsers/VariableParser.h"
-#include "GDCore/String.h"
-#include "EventsCodeGenerator.h"
-namespace gd {
-class EventsCodeGenerationContext;
-}  // namespace gd
-
-// TODO: Replace and remove (ExpressionCodeGenerator)
-namespace gd {
-
-/**
- * \brief Callbacks called to generate the code for getting a variable.
- *
- * Usage example:
- \code
-    VariableCodeGenerationCallbacks callbacks(output, eventsCodeGenerator,
- context, VariableCodeGenerationCallbacks::LAYOUT_VARIABLE);
-
-    gd::VariableParser parser(parameter);
-    if ( !parser.Parse(callbacks) )
-    {
-        //Error during parsing the variable name:
-        output = "runtimeContext->GetSceneVariables().GetBadVariable()";
-    }
-
-    //"output" now contains the C++ code to return the variable.
- \endcode
- */
-class VariableCodeGenerationCallbacks : public gd::VariableParserCallbacks {
- public:
-  /**
-   * \brief Default constructor for generating code for a layout/global
-   * variable. \param output The string in which the code will be generated.
-   * \param codeGenerator The code generator being used.
-   * \param context The current code generation context.
-   * \param scope The scope of the variable being accessed: LAYOUT_VARIABLE,
-   * PROJECT_VARIABLE.
-   */
-  VariableCodeGenerationCallbacks(gd::String& output,
-                                  gd::EventsCodeGenerator& codeGenerator_,
-                                  gd::EventsCodeGenerationContext& context_,
-                                  const gd::EventsCodeGenerator::VariableScope& scope_);
-  /**
-
-   * \brief Default constructor for generating code for an object variable.
-   * \param output The string in which the code will be generated.
-   * \param codeGenerator The code generator being used.
-   * \param context The current code generation context.
-   * \param object The name of the object
-   */
-  VariableCodeGenerationCallbacks(gd::String& output,
-                                  gd::EventsCodeGenerator& codeGenerator_,
-                                  gd::EventsCodeGenerationContext& context_,
-                                  const gd::String& object);
-
-  /**
-   * \brief Called when the first variable has been parsed.
-   * \param variableName The variable name.
-   */
-  virtual void OnRootVariable(gd::String variableName);
-
-  /**
-   * \brief Called when accessing the child of a structure variable.
-   * \param variableName The child variable name.
-   */
-  virtual void OnChildVariable(gd::String variableName);
-
-  /**
-   * \brief Called when accessing the child of a structure variable using a
-   * string expression in square brackets. \param variableName The expression
-   * used to access the child variable.
-   */
-  virtual void OnChildSubscript(gd::String stringExpression);
-
- private:
-  gd::String& output;
-  gd::EventsCodeGenerator& codeGenerator;
-  gd::EventsCodeGenerationContext& context;
-  gd::EventsCodeGenerator::VariableScope scope;
-  const gd::String object;  ///< The object name, when scope == OBJECT_VARIABLE.
-};
-
-}
-
-#endif  // VARIABLEPARSERCALLBACKS_H
-#endif

Core/GDCore/Events/Event.h

@@ -12,6 +12,7 @@
 #include <vector>
 #include "GDCore/Events/Instruction.h"
 #include "GDCore/Events/InstructionsList.h"
+#include "GDCore/Extensions/Metadata/InstructionMetadata.h"
 #include "GDCore/String.h"
 namespace gd {
 class EventsList;
@@ -90,8 +91,8 @@ class GD_CORE_API BaseEvent {
   bool HasSubEvents() const;
 
   /**
-   * Event must be able to return all conditions std::vector they have.
-   * Used to preprocess the conditions.
+   * \brief Return a list of all conditions of the event.
+   * \note Used to preprocess or search in the conditions.
    */
   virtual std::vector<gd::InstructionsList*> GetAllConditionsVectors() {
     std::vector<gd::InstructionsList*> noConditions;
@@ -104,8 +105,8 @@ class GD_CORE_API BaseEvent {
   };
 
   /**
-   * Event must be able to return all actions std::vector they have.
-   * Used to preprocess the actions.
+   * \brief Return a list of all actions of the event.
+   * \note Used to preprocess or search in the actions.
    */
   virtual std::vector<gd::InstructionsList*> GetAllActionsVectors() {
     std::vector<gd::InstructionsList*> noActions;
@@ -118,15 +119,26 @@ class GD_CORE_API BaseEvent {
   };
 
   /**
-   * Event must be able to return all expressions they have.
-   * Used to preprocess the expressions.
+   * \brief Return a list of all strings of the event.
+   * \note Used to preprocess or search in the event strings.
    */
-  virtual std::vector<gd::Expression*> GetAllExpressions() {
-    std::vector<gd::Expression*> noExpr;
+  virtual std::vector<gd::String> GetAllSearchableStrings() const {
+    std::vector<gd::String> noSearchableStrings;
+    return noSearchableStrings;
+  };
+
+  /**
+   * \brief Return a list of all expressions of the event, each with their associated metadata.
+   * \note Used to preprocess or search in the expressions of the event.
+   */
+  virtual std::vector<std::pair<gd::Expression*, gd::ParameterMetadata> >
+      GetAllExpressionsWithMetadata() {
+    std::vector<std::pair<gd::Expression*, gd::ParameterMetadata> > noExpr;
     return noExpr;
   };
-  virtual std::vector<const gd::Expression*> GetAllExpressions() const {
-    std::vector<const gd::Expression*> noExpr;
+  virtual std::vector<std::pair<const gd::Expression*, const gd::ParameterMetadata> >
+      GetAllExpressionsWithMetadata() const {
+    std::vector<std::pair<const gd::Expression*, const gd::ParameterMetadata> > noExpr;
     return noExpr;
   };
 

Core/GDCore/Events/EventsList.cpp

@@ -99,6 +99,23 @@ bool EventsList::Contains(const gd::BaseEvent& eventToSearch,
   return false;
 }
 
+bool EventsList::MoveEventToAnotherEventsList(const gd::BaseEvent& eventToMove,
+                                  gd::EventsList& newEventsList,
+                                  std::size_t newPosition) {
+
+  for (std::size_t i = 0; i < GetEventsCount(); ++i) {
+    if (events[i].get() == &eventToMove) {
+      std::shared_ptr<BaseEvent> event = events[i];
+      events.erase(events.begin() + i);
+
+      newEventsList.InsertEvent(event, newPosition);
+      return true;
+    }
+  }
+
+  return false;
+}
+
 EventsList::EventsList(const EventsList& other) { Init(other); }
 
 EventsList& EventsList::operator=(const EventsList& other) {

Core/GDCore/Events/EventsList.h

@@ -52,7 +52,8 @@ class GD_CORE_API EventsList {
    * \brief Insert the specified event to the list.
    * \note The event passed by parameter is not copied.
    * \param event The smart pointer to the event that must be inserted into the
-   * list \param position Insertion position. If the position is invalid, the
+   * list
+   * \param position Insertion position. If the position is invalid, the
    * object is inserted at the end of the objects list.
    */
   void InsertEvent(std::shared_ptr<gd::BaseEvent> event,
@@ -142,6 +143,25 @@ class GD_CORE_API EventsList {
    */
   bool Contains(const gd::BaseEvent& eventToSearch,
                 bool recursive = true) const;
+
+  /**
+   * Move the specified event, that must be in the events list, to another
+   * events list *without* invalidating the event (i.e: without
+   * destroying/cloning it) in memory.
+   *
+   * \warning newEventsList is supposed not to be contained inside the event
+   * (you should not try
+   * to move an event inside one of its children/grand children events).
+   *
+   * \param eventToMove The event to be moved
+   * \param newEventsList The new events list
+   * \param newPosition The position in the new events list
+   * \return true if the move was made, false otherwise (for example, if
+   * eventToMove is not found in the list)
+   */
+  bool MoveEventToAnotherEventsList(const gd::BaseEvent& eventToMove,
+                                    gd::EventsList& newEventsList,
+                                    std::size_t newPosition);
   ///@}
 
   /** \name std::vector API compatibility

Core/GDCore/Events/Instruction.cpp

@@ -4,9 +4,12 @@
  * reserved. This project is released under the MIT License.
  */
 #include "GDCore/Events/Instruction.h"
+
 #include <assert.h>
+
 #include <iostream>
 #include <vector>
+
 #include "GDCore/Events/Expression.h"
 #include "GDCore/Events/InstructionsList.h"
 #include "GDCore/String.h"
@@ -15,18 +18,14 @@ namespace gd {
 
 gd::Expression Instruction::badExpression("");
 
-Instruction::Instruction(gd::String type_)
-    : type(type_),
-      inverted(false) {
+Instruction::Instruction(gd::String type_) : type(type_), inverted(false) {
   parameters.reserve(8);
 }
 
 Instruction::Instruction(gd::String type_,
                          const std::vector<gd::Expression>& parameters_,
                          bool inverted_)
-    : type(type_),
-      inverted(inverted_),
-      parameters(parameters_) {
+    : type(type_), inverted(inverted_), parameters(parameters_) {
   parameters.reserve(8);
 }
 
@@ -56,4 +55,17 @@ void Instruction::SetParameter(std::size_t nb, const gd::Expression& val) {
   parameters[nb] = val;
 }
 
+std::shared_ptr<Instruction> GD_CORE_API
+CloneRememberingOriginalElement(std::shared_ptr<Instruction> instruction) {
+  std::shared_ptr<Instruction> copy =
+      std::make_shared<Instruction>(*instruction);
+  // Original instruction is either the original instruction of the copied
+  // instruction, or the instruction copied.
+  copy->originalInstruction = instruction->originalInstruction.expired()
+                                  ? instruction
+                                  : instruction->originalInstruction;
+
+  return copy;
+}
+
 }  // namespace gd

Core/GDCore/Events/Instruction.h

@@ -5,7 +5,9 @@
  */
 #ifndef INSTRUCTION_H
 #define INSTRUCTION_H
+#include <memory>
 #include <vector>
+
 #include "GDCore/Events/Expression.h"
 #include "GDCore/Events/InstructionsList.h"
 #include "GDCore/String.h"
@@ -131,6 +133,17 @@ class GD_CORE_API Instruction {
    */
   inline gd::InstructionsList& GetSubInstructions() { return subInstructions; };
 
+  /**
+   * \brief Return the original instruction this instruction was copied from.
+   *
+   * Useful to get reference to the original instruction in memory during code
+   * generation, to ensure stable unique identifiers.
+   */
+  std::weak_ptr<Instruction> GetOriginalInstruction() { return originalInstruction; };
+
+  friend std::shared_ptr<Instruction> CloneRememberingOriginalElement(
+      std::shared_ptr<Instruction> instruction);
+
  private:
   gd::String type;  ///< Instruction type
   bool inverted;  ///< True if the instruction if inverted. Only applicable for
@@ -139,9 +152,23 @@ class GD_CORE_API Instruction {
       parameters;                        ///< Vector containing the parameters
   gd::InstructionsList subInstructions;  ///< Sub instructions, if applicable.
 
+  std::weak_ptr<Instruction>
+      originalInstruction;  ///< Pointer used to remember which gd::Instruction
+                            ///< this instruction was copied from. Useful to
+                            ///< ensure the stability of code generation (as
+                            ///< some part of code generation uses the pointer
+                            ///< to the instruction as a unique identifier).
+
   static gd::Expression badExpression;
 };
 
+/**
+ * Clone the given instruction, returning an instruction for which
+ * `GetOriginalInstruction()` returns the originally copied instruction.
+ */
+std::shared_ptr<Instruction> GD_CORE_API
+CloneRememberingOriginalElement(std::shared_ptr<Instruction> instruction);
+
 }  // namespace gd
 
 #endif  // INSTRUCTION_H

Core/GDCore/Events/Parsers/ExpressionParser.cpp

@@ -1,897 +0,0 @@
-/*
- * GDevelop Core
- * Copyright 2008-2016 Florian Rival (Florian.Rival@gmail.com). All rights
- * reserved. This project is released under the MIT License.
- */
-#include "GDCore/Events/Parsers/ExpressionParser.h"
-#include <algorithm>
-#include <iostream>
-#include "GDCore/CommonTools.h"
-#include "GDCore/Events/Expression.h"
-#include "GDCore/Extensions/Metadata/ExpressionMetadata.h"
-#include "GDCore/Extensions/Metadata/InstructionMetadata.h"
-#include "GDCore/Extensions/Metadata/MetadataProvider.h"
-#include "GDCore/Extensions/Platform.h"
-#include "GDCore/Project/Layout.h"
-#include "GDCore/Project/Project.h"
-#include "GDCore/Tools/Localization.h"
-
-using namespace std;
-
-namespace gd {
-
-gd::String ExpressionParser::parserSeparators = " ,+-*/%.<>=&|;()#^![]{}";
-
-size_t ExpressionParser::GetMinimalParametersNumber(
-    const std::vector<gd::ParameterMetadata>& parametersInfos) {
-  size_t nb = 0;
-  for (std::size_t i = 0; i < parametersInfos.size(); ++i) {
-    if (!parametersInfos[i].optional && !parametersInfos[i].codeOnly) nb++;
-  }
-
-  return nb;
-}
-
-size_t ExpressionParser::GetMaximalParametersNumber(
-    const std::vector<gd::ParameterMetadata>& parametersInfos) {
-  size_t nb = 0;
-  for (std::size_t i = 0; i < parametersInfos.size(); ++i) {
-    if (!parametersInfos[i].codeOnly) nb++;
-  }
-
-  return nb;
-}
-
-/**
- * Add blank parameters when code-only parameters are expected.
- * \param Parameters information
- * \param vector of parameters without code only parameters.
- */
-std::vector<gd::Expression> CompleteParameters(
-    const std::vector<gd::ParameterMetadata>& parametersInfo,
-    const std::vector<gd::Expression>& parameters) {
-  std::vector<gd::Expression> completeParameters = parameters;
-  for (std::size_t i = 0; i < parametersInfo.size();
-       ++i)  // Code only parameters are not included in expressions parameters.
-  {
-    if (parametersInfo[i].codeOnly) {
-      if (i > completeParameters.size()) {
-        cout << "Bad parameter count in expression.";
-      }
-
-      if (i >= completeParameters.size())
-        completeParameters.push_back(gd::Expression(""));
-      else
-        completeParameters.insert(completeParameters.begin() + i,
-                                  gd::Expression(""));
-    } else {
-      if (i >= completeParameters.size()) {
-        completeParameters.push_back(gd::Expression(""));
-      }
-    }
-  }
-  return completeParameters;
-}
-
-bool ExpressionParser::ValidSyntax(const gd::String& str) {
-  static const gd::String numerics = "0123456789.e";
-  static const gd::String operators = "+/*-%";
-
-  size_t parenthesisLevel = 0;
-  gd::String lastOperator;
-
-  bool parsingNumber = false;
-  bool parsingScientificNotationNumber = false;
-  bool parsingDecimalNumber = false;
-  bool requestNumber = false;
-  gd::String lastNumber;
-  bool numberWasParsedLast = false;
-
-  for (auto it = str.begin(); it != str.end(); ++it) {
-    char32_t currentChar = *it;
-    if (currentChar == U' ' || currentChar == U'\n') {
-      if (requestNumber) {
-        firstErrorStr = _("Number expected");
-
-        return false;
-      }
-
-      if (parsingNumber) {
-        parsingNumber = false;
-        parsingScientificNotationNumber = false;
-        parsingDecimalNumber = false;
-        requestNumber = false;
-        lastNumber.clear();
-        numberWasParsedLast = true;
-      }
-    } else if (numerics.find(currentChar) != gd::String::npos) {
-      requestNumber = false;
-
-      if (currentChar == U'.') {
-        if (!parsingNumber) {
-          firstErrorStr = _("Syntax error");
-
-          return false;
-        }
-
-        if (parsingDecimalNumber) {
-          firstErrorStr = _("Syntax error in a number.");
-
-          return false;
-        }
-
-        parsingDecimalNumber = true;
-      }
-
-      if (currentChar == U'e') {
-        if (parsingScientificNotationNumber) {
-          firstErrorStr = _("Syntax error in a number.");
-
-          return false;
-        }
-
-        parsingScientificNotationNumber = true;
-        requestNumber = true;
-      }
-
-      if (numberWasParsedLast) {
-        firstErrorStr = _("Operator missing before a number");
-
-        return false;
-      }
-
-      parsingNumber = true;
-      lastNumber += currentChar;
-    } else if (currentChar == U')') {
-      if (requestNumber) {
-        firstErrorStr = _("Number expected");
-
-        return false;
-      }
-
-      if (parsingNumber) {
-        parsingNumber = false;
-        parsingScientificNotationNumber = false;
-        parsingDecimalNumber = false;
-        lastNumber.clear();
-        numberWasParsedLast = true;
-      }
-
-      if (!numberWasParsedLast) {
-        firstErrorStr = _("Superfluous operator before a paranthesis");
-
-        return false;
-      }
-
-      if (parenthesisLevel > 0)
-        parenthesisLevel--;
-      else {
-        firstErrorStr = _("Bad closing paranthesis");
-
-        return false;
-      }
-
-      auto previousIt = it;
-      --previousIt;
-      if (*previousIt == U'(') {
-        firstErrorStr = _("Empty paranthesis");
-
-        return false;
-      }
-    } else if (currentChar == U'(') {
-      if (requestNumber) {
-        firstErrorStr = _("Number expected");
-
-        return false;
-      }
-
-      if (parsingNumber) {
-        parsingNumber = false;
-        parsingScientificNotationNumber = false;
-        parsingDecimalNumber = false;
-        lastNumber.clear();
-        numberWasParsedLast = true;
-      }
-
-      if (numberWasParsedLast) {
-        firstErrorStr = _("Operator missing before a paranthesis");
-
-        return false;
-      }
-
-      parenthesisLevel++;
-      numberWasParsedLast = false;
-    } else if (operators.find(currentChar) != gd::String::npos) {
-      if (currentChar == U'-' && parsingNumber &&
-          parsingScientificNotationNumber) {
-        lastNumber += currentChar;
-        requestNumber = true;
-      } else {
-        if (requestNumber) {
-          firstErrorStr = _("Number expected");
-
-          return false;
-        }
-
-        if (parsingNumber) {
-          parsingNumber = false;
-          parsingScientificNotationNumber = false;
-          parsingDecimalNumber = false;
-          lastNumber.clear();
-          numberWasParsedLast = true;
-        }
-
-        if (currentChar != U'-' && currentChar != U'+' &&
-            !numberWasParsedLast) {
-          firstErrorStr = _("Operators without any number between them");
-
-          return false;
-        }
-
-        numberWasParsedLast = false;
-      }
-    } else {
-      firstErrorStr = _("Syntax error");
-
-      return false;
-    }
-  }
-
-  if (parsingNumber) {
-    parsingNumber = false;
-    parsingScientificNotationNumber = false;
-    parsingDecimalNumber = false;
-    lastNumber.clear();
-    numberWasParsedLast = true;
-  } else if (requestNumber) {
-    firstErrorStr = _("Number expected");
-
-    return false;
-  }
-
-  if (parenthesisLevel != 0) {
-    firstErrorStr = _("Paranthesis mismatch");
-
-    return false;
-  }
-
-  if (!numberWasParsedLast) {
-    firstErrorStr = _("Alone operator at the end of the expression");
-
-    return false;
-  }
-
-  return true;
-}
-
-bool ExpressionParser::ParseMathExpression(const gd::Platform& platform,
-                                           const gd::ObjectsContainer& project,
-                                           const gd::ObjectsContainer& layout,
-                                           gd::ParserCallbacks& callbacks) {
-  callbacks.SetReturnType("expression");
-  gd::String expression = expressionPlainString;
-
-  size_t parsePosition = 0;
-
-  size_t firstPointPos = expression.find(".");
-  size_t firstParPos = expression.find("(");
-
-  gd::String expressionWithoutFunctions;
-  gd::String nonFunctionToken;
-  size_t nonFunctionTokenStartPos = gd::String::npos;
-
-  while (firstPointPos != string::npos || firstParPos != string::npos) {
-    // Identify name
-    size_t nameEnd = firstPointPos < firstParPos ? firstPointPos : firstParPos;
-    size_t nameStart = expression.find_last_of(parserSeparators, nameEnd - 1);
-    nameStart++;
-
-    gd::String nameBefore = expression.substr(nameStart, nameEnd - nameStart);
-    gd::String objectName = nameBefore.FindAndReplace("~", " ");
-
-    // Identify function name
-    gd::String functionName = nameBefore;
-    size_t functionNameEnd = nameEnd;
-    vector<gd::Expression> parameters;
-
-    bool nameIsFunction = firstPointPos > firstParPos;
-    if (!nameIsFunction) {
-      parameters.push_back(gd::Expression(objectName));
-      functionNameEnd = expression.find_first_of(" (", nameEnd);
-      if (nameEnd + 1 < expression.length())
-        functionName =
-            expression.substr(nameEnd + 1, functionNameEnd - (nameEnd + 1));
-      if (functionNameEnd == string::npos) {
-        functionName = "";
-        functionNameEnd = expression.length() - 1;
-      }
-    }
-
-    // Now we're going to identify the expression
-    gd::ExpressionMetadata instructionInfos;
-
-    if (functionName.substr(0, functionName.length() - 1)
-            .find_first_of(parserSeparators) == string::npos) {
-      bool functionFound = false;
-      bool staticFunctionFound = false;
-      bool objectFunctionFound = false;
-      bool behaviorFunctionFound = false;
-
-      // First try to bind to a static expression
-      if (nameIsFunction &&
-          MetadataProvider::HasExpression(platform, functionName)) {
-        functionFound = true;
-        staticFunctionFound = true;
-        instructionInfos =
-            MetadataProvider::GetExpressionMetadata(platform, functionName);
-      }
-      // Then search in object expression
-      else if (!nameIsFunction &&
-               MetadataProvider::HasObjectExpression(
-                   platform,
-                   gd::GetTypeOfObject(project, layout, objectName),
-                   functionName)) {
-        functionFound = true;
-        objectFunctionFound = true;
-        instructionInfos = MetadataProvider::GetObjectExpressionMetadata(
-            platform,
-            gd::GetTypeOfObject(project, layout, objectName),
-            functionName);
-      }
-      // And in behaviors expressions
-      else if (!nameIsFunction) {
-        size_t firstDoublePoints = functionName.find("::");
-        if (firstDoublePoints != string::npos) {
-          gd::String autoName = functionName.substr(0, firstDoublePoints);
-          if (firstDoublePoints + 2 < functionName.length())
-            functionName = functionName.substr(firstDoublePoints + 2,
-                                               functionName.length());
-          else
-            functionName = "";
-
-          if (MetadataProvider::HasBehaviorExpression(
-                  platform,
-                  gd::GetTypeOfBehavior(project, layout, autoName),
-                  functionName)) {
-            parameters.push_back(gd::Expression(autoName));
-            functionFound = true;
-            behaviorFunctionFound = true;
-
-            instructionInfos = MetadataProvider::GetBehaviorExpressionMetadata(
-                platform,
-                gd::GetTypeOfBehavior(project, layout, autoName),
-                functionName);
-
-            // Verify that object has behavior.
-            vector<gd::String> behaviors =
-                gd::GetBehaviorsOfObject(project, layout, objectName);
-            if (find(behaviors.begin(), behaviors.end(), autoName) ==
-                behaviors.end()) {
-              cout << "Bad behavior requested" << endl;
-              functionFound = false;
-            }
-          }
-        }
-      }
-
-      if (functionFound)  // Add the function
-      {
-        // Identify parameters
-        size_t parametersEnd = expression.find_first_of("(", functionNameEnd);
-        gd::String currentParameterStr;
-        char32_t previousChar = '(';
-        bool takeSymbolsInAccount = true;
-        if (parametersEnd != string::npos) {
-          size_t level = 0;
-          parametersEnd++;
-
-          while (parametersEnd < expression.length() &&
-                 !(expression[parametersEnd] == ')' && level == 0)) {
-            // Be sure we are not in quotes
-            if (expression[parametersEnd] == U'\"' && previousChar != U'\\')
-              takeSymbolsInAccount = !takeSymbolsInAccount;
-
-            // So as to be sure paranthesis don't belong to a parameter
-            if (expression[parametersEnd] == U'(' && takeSymbolsInAccount)
-              level++;
-            if (expression[parametersEnd] == U')' && takeSymbolsInAccount)
-              level--;
-
-            // Add the character to the current parameter or terminate the
-            // latter
-            if ((expression[parametersEnd] == U',' && level == 0) &&
-                takeSymbolsInAccount) {
-              parameters.push_back(currentParameterStr);
-              currentParameterStr.clear();
-            } else
-              currentParameterStr += expression[parametersEnd];
-
-            previousChar = expression[parametersEnd];
-            parametersEnd++;
-          }
-          if (currentParameterStr.find_first_not_of(" ") !=
-              string::npos)  // Add last parameter if needed
-          {
-            parameters.push_back(currentParameterStr);
-          }
-
-          // Testing function call is properly closed
-          if (parametersEnd == expression.length() ||
-              expression[parametersEnd] != U')') {
-            firstErrorStr = _("Paranthesis not closed");
-            firstErrorPos = parametersEnd - 1;
-
-            return false;
-          }
-
-          // Testing the number of parameters
-          if (parameters.size() >
-                  GetMaximalParametersNumber(instructionInfos.parameters) ||
-              parameters.size() <
-                  GetMinimalParametersNumber(instructionInfos.parameters)) {
-            firstErrorPos = functionNameEnd;
-            firstErrorStr = _("Incorrect number of parameters");
-            firstErrorStr += " ";
-            firstErrorStr += _("Expected (maximum) :");
-            firstErrorStr += gd::String::From(
-                GetMaximalParametersNumber(instructionInfos.parameters));
-
-            return false;
-          }
-
-          // Preparing parameters
-          parameters =
-              CompleteParameters(instructionInfos.parameters, parameters);
-          for (std::size_t i = 0; i < instructionInfos.parameters.size(); ++i) {
-            if (!PrepareParameter(platform,
-                                  project,
-                                  layout,
-                                  callbacks,
-                                  parameters[i],
-                                  instructionInfos.parameters[i],
-                                  functionNameEnd))
-              return false;
-          }
-        } else {
-          firstErrorPos = functionNameEnd;
-          firstErrorStr = _("Parameters' parenthesis missing");
-
-          return false;
-        }
-
-        callbacks.OnConstantToken(
-            nonFunctionToken +
-            expression.substr(parsePosition, nameStart - parsePosition));
-        expressionWithoutFunctions +=
-            expression.substr(parsePosition, nameStart - parsePosition);
-        nonFunctionToken.clear();
-        nonFunctionTokenStartPos = gd::String::npos;
-
-        if (objectFunctionFound)
-          callbacks.OnObjectFunction(
-              functionName, parameters, instructionInfos);
-        else if (behaviorFunctionFound)
-          callbacks.OnObjectBehaviorFunction(
-              functionName, parameters, instructionInfos);
-        else if (staticFunctionFound)
-          callbacks.OnStaticFunction(
-              functionName, parameters, instructionInfos);
-
-        if (objectFunctionFound || behaviorFunctionFound || staticFunctionFound)
-          expressionWithoutFunctions += "0";
-
-        parsePosition = parametersEnd + 1;
-        firstPointPos = expression.find(".", parametersEnd + 1);
-        firstParPos = expression.find("(", parametersEnd + 1);
-      } else  // Math function or math constant : Pass it.
-      {
-        nonFunctionToken += expression.substr(
-            parsePosition, functionNameEnd + 1 - parsePosition);
-        expressionWithoutFunctions += expression.substr(
-            parsePosition, functionNameEnd + 1 - parsePosition);
-        nonFunctionTokenStartPos = (nonFunctionTokenStartPos != gd::String::npos
-                                        ? nonFunctionTokenStartPos
-                                        : parsePosition);
-        parsePosition = functionNameEnd + 1;
-        firstPointPos = expression.find(".", functionNameEnd + 1);
-        firstParPos = expression.find("(", functionNameEnd + 1);
-      }
-    } else  // Not a function call : Pass it
-    {
-      nonFunctionToken +=
-          expression.substr(parsePosition, nameEnd + 1 - parsePosition);
-      expressionWithoutFunctions +=
-          expression.substr(parsePosition, nameEnd + 1 - parsePosition);
-      nonFunctionTokenStartPos = (nonFunctionTokenStartPos != gd::String::npos
-                                      ? nonFunctionTokenStartPos
-                                      : parsePosition);
-      parsePosition = nameEnd + 1;
-      firstPointPos = expression.find(".", nameEnd + 1);
-      firstParPos = expression.find("(", nameEnd + 1);
-    }
-  }
-
-  if (parsePosition < expression.length() || !nonFunctionToken.empty())
-    callbacks.OnConstantToken(
-        nonFunctionToken +
-        expression.substr(parsePosition, expression.length()));
-
-  expressionWithoutFunctions +=
-      expression.substr(parsePosition, expression.length());
-
-  return ValidSyntax(expressionWithoutFunctions);
-}
-
-bool ExpressionParser::ParseStringExpression(const gd::Platform& platform,
-                                             const gd::ObjectsContainer& project,
-                                             const gd::ObjectsContainer& layout,
-                                             gd::ParserCallbacks& callbacks) {
-  callbacks.SetReturnType("string");
-  gd::String expression = expressionPlainString;
-
-  size_t parsePosition = 0;
-
-  // Searching for first token.
-  size_t firstPointPos = expression.find(".");
-  size_t firstParPos = expression.find("(");
-  size_t firstQuotePos = expression.find("\"");
-
-  if (firstPointPos == string::npos && firstParPos == string::npos &&
-      firstQuotePos == string::npos) {
-    firstErrorPos = 0;
-    firstErrorStr =
-        _("The expression is invalid or empty. Enter a text ( surrounded by "
-          "quotes ) or a function.");
-
-    return false;
-  }
-
-  while (firstPointPos != string::npos || firstParPos != string::npos ||
-         firstQuotePos != string::npos) {
-    if (firstQuotePos < firstPointPos &&
-        firstQuotePos < firstParPos)  // Adding a constant text
-    {
-      callbacks.OnConstantToken(
-          expression.substr(parsePosition, firstQuotePos - parsePosition));
-
-      // Finding start and end of quotes
-      size_t finalQuotePosition = expression.find("\"", firstQuotePos + 1);
-      while (finalQuotePosition ==
-             expression.find("\\\"", finalQuotePosition - 1) + 1)
-        finalQuotePosition = expression.find("\"", finalQuotePosition + 1);
-
-      if (finalQuotePosition == string::npos) {
-        firstErrorPos = firstQuotePos;
-        firstErrorStr = _("Quotes not closed.");
-
-        return false;
-      }
-
-      // Generating final text, by replacing \" by quotes
-      gd::String finalText = expression.substr(
-          firstQuotePos + 1, finalQuotePosition - (firstQuotePos + 1));
-
-      size_t foundPos = finalText.find("\\\"");
-      while (foundPos != string::npos) {
-        if (foundPos != string::npos) finalText.replace(foundPos, 2, "\"");
-        foundPos = finalText.find("\\\"", foundPos);
-      }
-
-      // Adding constant text instruction
-      //(Function without name is considered as a constant text)
-      vector<gd::Expression> parameters;
-      parameters.push_back(finalText);
-      gd::ExpressionMetadata noParametersInfo;
-
-      callbacks.OnStaticFunction("", parameters, noParametersInfo);
-
-      parsePosition = finalQuotePosition + 1;
-    } else  // Adding a function
-    {
-      // Identify name
-      size_t nameEnd =
-          firstPointPos < firstParPos ? firstPointPos : firstParPos;
-      size_t nameStart = expression.find_last_of(parserSeparators, nameEnd - 1);
-      nameStart++;
-
-      callbacks.OnConstantToken(
-          expression.substr(parsePosition, nameStart - parsePosition));
-
-      gd::String nameBefore = expression.substr(nameStart, nameEnd - nameStart);
-      gd::String objectName = nameBefore.FindAndReplace("~", " ");
-
-      // Identify function name
-      gd::String functionName = nameBefore;
-      size_t functionNameEnd = nameEnd;
-      vector<gd::Expression> parameters;
-
-      bool nameIsFunction = firstPointPos > firstParPos;
-      if (!nameIsFunction) {
-        parameters.push_back(gd::Expression(objectName));
-        functionNameEnd = expression.find_first_of("( ", nameEnd);
-        if (nameEnd + 1 < expression.length())
-          functionName =
-              expression.substr(nameEnd + 1, functionNameEnd - (nameEnd + 1));
-      }
-
-      // Identify parameters
-      size_t parametersEnd = expression.find_first_of("(", functionNameEnd) + 1;
-      char32_t previousChar = U'(';
-      bool takeSymbolsInAccount = true;
-      size_t level = 0;
-      gd::String currentParameterStr;
-      while (parametersEnd < expression.length() &&
-             !(expression[parametersEnd] == U')' && level == 0)) {
-        // Be sure we are not in quotes
-        if (expression[parametersEnd] == U'\"' && previousChar != U'\\')
-          takeSymbolsInAccount = !takeSymbolsInAccount;
-
-        // So as to be sure paranthesis don't belong to a parameter
-        if (expression[parametersEnd] == U'(' && takeSymbolsInAccount) level++;
-        if (expression[parametersEnd] == U')' && takeSymbolsInAccount) level--;
-
-        // Add the character to the current parameter or terminate the latter
-        if ((expression[parametersEnd] == ',' && level == 0) &&
-            takeSymbolsInAccount) {
-          gd::Expression currentParameter(currentParameterStr);
-          parameters.push_back(currentParameter);
-
-          currentParameterStr.clear();
-        } else
-          currentParameterStr += expression[parametersEnd];
-
-        previousChar = expression[parametersEnd];
-        parametersEnd++;
-      }
-
-      if (parametersEnd == expression.length() ||
-          expression[parametersEnd] != U')') {
-        firstErrorPos = parametersEnd - 1;
-        firstErrorStr = _("Paranthesis not closed");
-
-        return false;
-      }
-
-      if (currentParameterStr.find_first_not_of(" ") !=
-          string::npos)  // Add last parameter if needed
-      {
-        gd::Expression lastParameter(currentParameterStr);
-        parameters.push_back(lastParameter);
-      }
-
-      bool functionFound = false;
-
-      // First try to bind to a static str expression
-      if (nameIsFunction &&
-          MetadataProvider::HasStrExpression(platform, functionName)) {
-        functionFound = true;
-        const gd::ExpressionMetadata& expressionInfo =
-            MetadataProvider::GetStrExpressionMetadata(platform, functionName);
-
-        // Testing the number of parameters
-        if (parameters.size() >
-                GetMaximalParametersNumber(expressionInfo.parameters) ||
-            parameters.size() <
-                GetMinimalParametersNumber(expressionInfo.parameters)) {
-          firstErrorPos = functionNameEnd;
-          firstErrorStr = _("Incorrect number of parameters");
-
-          return false;
-        }
-
-        // Preparing parameters
-        parameters = CompleteParameters(expressionInfo.parameters, parameters);
-        for (std::size_t i = 0;
-             i < parameters.size() && i < expressionInfo.parameters.size();
-             ++i) {
-          if (!PrepareParameter(platform,
-                                project,
-                                layout,
-                                callbacks,
-                                parameters[i],
-                                expressionInfo.parameters[i],
-                                functionNameEnd))
-            return false;
-        }
-
-        callbacks.OnStaticFunction(functionName, parameters, expressionInfo);
-      }
-      // Then an object member expression
-      else if (!nameIsFunction &&
-               MetadataProvider::HasObjectStrExpression(
-                   platform,
-                   gd::GetTypeOfObject(project, layout, objectName),
-                   functionName)) {
-        functionFound = true;
-        const gd::ExpressionMetadata& expressionInfo =
-            MetadataProvider::GetObjectStrExpressionMetadata(
-                platform,
-                gd::GetTypeOfObject(project, layout, nameBefore),
-                functionName);
-
-        // Testing the number of parameters
-        if (parameters.size() >
-                GetMaximalParametersNumber(expressionInfo.parameters) ||
-            parameters.size() <
-                GetMinimalParametersNumber(expressionInfo.parameters)) {
-          firstErrorPos = functionNameEnd;
-          firstErrorStr = _("Incorrect number of parameters");
-
-          return false;
-        }
-
-        // Preparing parameters
-        parameters = CompleteParameters(expressionInfo.parameters, parameters);
-        for (std::size_t i = 0;
-             i < parameters.size() && i < expressionInfo.parameters.size();
-             ++i) {
-          if (!PrepareParameter(platform,
-                                project,
-                                layout,
-                                callbacks,
-                                parameters[i],
-                                expressionInfo.parameters[i],
-                                functionNameEnd))
-            return false;
-        }
-
-        callbacks.OnObjectFunction(functionName, parameters, expressionInfo);
-      }
-      // And search behaviors expressions
-      else {
-        size_t firstDoublePoints = functionName.find("::");
-        if (firstDoublePoints != string::npos) {
-          gd::String autoName = functionName.substr(0, firstDoublePoints);
-          if (firstDoublePoints + 2 < functionName.length())
-            functionName = functionName.substr(firstDoublePoints + 2,
-                                               functionName.length());
-          else
-            functionName = "";
-
-          if (MetadataProvider::HasBehaviorStrExpression(
-                  platform,
-                  gd::GetTypeOfBehavior(project, layout, autoName),
-                  functionName)) {
-            parameters.push_back(gd::Expression(autoName));
-            functionFound = true;
-
-            const gd::ExpressionMetadata& expressionInfo =
-                MetadataProvider::GetBehaviorStrExpressionMetadata(
-                    platform,
-                    gd::GetTypeOfBehavior(project, layout, autoName),
-                    functionName);
-
-            // Verify that object has behavior.
-            vector<gd::String> behaviors =
-                gd::GetBehaviorsOfObject(project, layout, objectName);
-            if (find(behaviors.begin(), behaviors.end(), autoName) ==
-                behaviors.end()) {
-              cout << "Bad behavior requested" << endl;
-              functionFound = false;
-            } else {
-              // Testing the number of parameters
-              if (parameters.size() >
-                      GetMaximalParametersNumber(expressionInfo.parameters) ||
-                  parameters.size() <
-                      GetMinimalParametersNumber(expressionInfo.parameters)) {
-                firstErrorPos = functionNameEnd;
-                firstErrorStr = _("Incorrect number of parameters");
-
-                return false;
-              }
-
-              // Preparing parameters
-              parameters =
-                  CompleteParameters(expressionInfo.parameters, parameters);
-              for (std::size_t i = 0; i < parameters.size() &&
-                                      i < expressionInfo.parameters.size();
-                   ++i) {
-                if (!PrepareParameter(platform,
-                                      project,
-                                      layout,
-                                      callbacks,
-                                      parameters[i],
-                                      expressionInfo.parameters[i],
-                                      functionNameEnd))
-                  return false;
-              }
-
-              callbacks.OnObjectBehaviorFunction(
-                  functionName, parameters, expressionInfo);
-            }
-          }
-        }
-      }
-
-      // Note : _No_ support for implicit conversion from math result to string
-
-      if (!functionFound)  // Function was not found
-      {
-        firstErrorPos = nameStart;
-        firstErrorStr = _("Function not recognized.");
-
-        return false;
-      }
-
-      parsePosition = parametersEnd + 1;
-    }
-
-    // Searching for next token
-    size_t firstPlusPos = expression.find("+", parsePosition);
-    firstPointPos = expression.find(".", parsePosition);
-    firstParPos = expression.find("(", parsePosition);
-    firstQuotePos = expression.find("\"", parsePosition);
-
-    // Checking for a + between token
-    if ((firstPointPos != string::npos || firstParPos != string::npos ||
-         firstQuotePos != string::npos)) {
-      size_t nextTokenPos = firstPointPos;
-      if (firstParPos < nextTokenPos) nextTokenPos = firstParPos;
-      if (firstQuotePos < nextTokenPos) nextTokenPos = firstQuotePos;
-
-      if (nextTokenPos < firstPlusPos) {
-        firstErrorPos = nextTokenPos;
-        firstErrorStr = _("Symbol missing between two +.");
-
-        return false;
-      } else if (expression.find("+", firstPlusPos + 1) < nextTokenPos) {
-        firstErrorPos = firstPlusPos;
-        firstErrorStr = _("Symbol missing between two +.");
-
-        return false;
-      }
-    }
-  }
-
-  if (expression.substr(parsePosition, expression.length())
-          .find_first_not_of(" \n") != gd::String::npos) {
-    firstErrorPos = parsePosition;
-    firstErrorStr = _("Bad symbol at the end of the expression.");
-
-    return false;
-  }
-
-  return true;
-}
-
-bool ExpressionParser::PrepareParameter(
-    const gd::Platform& platform,
-    const gd::ObjectsContainer& project,
-    const gd::ObjectsContainer& layout,
-    ParserCallbacks& callbacks,
-    gd::Expression& parameter,
-    const gd::ParameterMetadata& parametersInfo,
-    const size_t positionInExpression) {
-  if (ParameterMetadata::IsExpression("number", parametersInfo.type)) {
-    if (parametersInfo.optional && parameter.GetPlainString().empty())
-      parameter = parametersInfo.GetDefaultValue().empty()
-                      ? gd::Expression("0")
-                      : gd::Expression(parametersInfo.GetDefaultValue());
-
-    if (!callbacks.OnSubMathExpression(platform, project, layout, parameter)) {
-      firstErrorStr = callbacks.firstErrorStr;
-      firstErrorPos = callbacks.firstErrorPos + positionInExpression;
-
-      return false;
-    }
-  } else if (ParameterMetadata::IsExpression("string", parametersInfo.type)) {
-    if (parametersInfo.optional && parameter.GetPlainString().empty())
-      parameter = parametersInfo.GetDefaultValue().empty()
-                      ? gd::Expression("\"\"")
-                      : gd::Expression(parametersInfo.GetDefaultValue());
-
-    if (!callbacks.OnSubTextExpression(platform, project, layout, parameter)) {
-      firstErrorStr = callbacks.firstErrorStr;
-      firstErrorPos = callbacks.firstErrorPos + positionInExpression;
-
-      return false;
-    }
-  }
-
-  return true;
-}
-
-ExpressionParser::ExpressionParser(const gd::String& expressionPlainString_)
-    : expressionPlainString(expressionPlainString_) {}
-
-}  // namespace gd

Core/GDCore/Events/Parsers/ExpressionParser.h

@@ -1,179 +0,0 @@
-/*
- * GDevelop Core
- * Copyright 2008-2016 Florian Rival (Florian.Rival@gmail.com). All rights
- * reserved. This project is released under the MIT License.
- */
-#ifndef GDCORE_EXPRESSIONPARSER_H
-#define GDCORE_EXPRESSIONPARSER_H
-
-#include <vector>
-#include "GDCore/String.h"
-namespace gd {
-class Expression;
-class ParserCallbacks;
-class ObjectsContainer;
-class Platform;
-class ParameterMetadata;
-class ExpressionMetadata;
-}
-
-namespace gd {
-
-/** \brief Parse an expression
- *
- * Parse an expression, calling callbacks when a token is reached
- * \see gd::ParserCallbacks
- */
-class GD_CORE_API ExpressionParser {
- public:
-  ExpressionParser(const gd::String &expressionPlainString_);
-  virtual ~ExpressionParser(){};
-
-  /**
-   * \brief Parse the expression, calling each functor when necessary
-   * \return True if expression was correctly parsed.
-   */
-  bool ParseMathExpression(const gd::Platform &platform,
-                           const gd::ObjectsContainer &project,
-                           const gd::ObjectsContainer &layout,
-                           gd::ParserCallbacks &callbacks);
-
-  /**
-   * \brief Parse the expression, calling each functor when necessary
-   * \return True if expression was correctly parsed.
-   */
-  bool ParseStringExpression(const gd::Platform &platform,
-                             const gd::ObjectsContainer &project,
-                             const gd::ObjectsContainer &layout,
-                             gd::ParserCallbacks &callbacks);
-
-  /**
-   * \brief Return the description of the error that was found
-   */
-  const gd::String &GetFirstError() { return firstErrorStr; }
-
-  /**
-   * \brief Return the position of the error that was found
-   * \return The position, or gd::String::npos if no error is found
-   */
-  size_t GetFirstErrorPosition() { return firstErrorPos; }
-
- private:
-  gd::String firstErrorStr;
-  size_t firstErrorPos;
-
-  /**
-   * Tool function to add a parameter
-   */
-  bool AddParameterToList(const gd::ObjectsContainer &project,
-                          const gd::ObjectsContainer &layout,
-                          ParserCallbacks &,
-                          std::vector<gd::Expression> &parameters,
-                          gd::String parameterStr,
-                          std::vector<gd::ParameterMetadata> parametersInfos,
-                          const size_t positionInExpression);
-
-  /**
-   * Tool function to prepare a parameter
-   */
-  bool PrepareParameter(const gd::Platform &platform,
-                        const gd::ObjectsContainer &project,
-                        const gd::ObjectsContainer &layout,
-                        ParserCallbacks &,
-                        gd::Expression &parameter,
-                        const gd::ParameterMetadata &parametersInfo,
-                        const size_t positionInExpression);
-
-  /**
-   * Return the minimal number of parameters which can be used when calling an
-   * expression ( i.e. ParametersCount-OptionalParameters-CodeOnlyParameters )
-   */
-  size_t GetMinimalParametersNumber(
-      const std::vector<gd::ParameterMetadata> &parametersInfos);
-
-  /**
-   * Return the maximal number of parameters which can be used when calling an
-   * expression ( i.e. ParametersCount-CodeOnlyParameters )
-   */
-  size_t GetMaximalParametersNumber(
-      const std::vector<gd::ParameterMetadata> &parametersInfos);
-
-  bool ValidSyntax(const gd::String &str);
-
-  gd::String expressionPlainString;
-  static gd::String parserSeparators;
-};
-
-/** \brief Callbacks called by parser during parsing
- *
- * Parser will call the appropriate functions during parsing, allowing to do
- * special works. \see gd::ExpressionParser
- */
-class GD_CORE_API ParserCallbacks {
-  friend class ExpressionParser;
-
- public:
-  ParserCallbacks() : returnType("expression"){};
-  virtual ~ParserCallbacks(){};
-
-  /**
-   * \brief Get the type of the expression for which callbacks are used:
-   * "expression" or "string".
-   */
-  const gd::String &GetReturnType() { return returnType; }
-
-  virtual void OnConstantToken(gd::String text) = 0;
-
-  virtual void OnStaticFunction(
-      gd::String functionName,
-      const std::vector<gd::Expression> &parameters,
-      const gd::ExpressionMetadata &expressionInfo) = 0;
-
-  virtual void OnObjectFunction(
-      gd::String functionName,
-      const std::vector<gd::Expression> &parameters,
-      const gd::ExpressionMetadata &expressionInfo) = 0;
-
-  virtual void OnObjectBehaviorFunction(
-      gd::String functionName,
-      const std::vector<gd::Expression> &parameters,
-      const gd::ExpressionMetadata &expressionInfo) = 0;
-
-  virtual bool OnSubMathExpression(const gd::Platform &platform,
-                                   const gd::ObjectsContainer &project,
-                                   const gd::ObjectsContainer &layout,
-                                   gd::Expression &expression) = 0;
-  virtual bool OnSubTextExpression(const gd::Platform &platform,
-                                   const gd::ObjectsContainer &project,
-                                   const gd::ObjectsContainer &layout,
-                                   gd::Expression &expression) = 0;
-
-  /**
-   * \brief Return the description of the error that was found
-   */
-  const gd::String &GetFirstError() { return firstErrorStr; }
-
-  /**
-   * \brief Return the position of the error that was found
-   * \return The position, or gd::String::npos if no error is found
-   */
-  size_t GetFirstErrorPosition() { return firstErrorPos; }
-
- protected:
-  gd::String firstErrorStr;
-  size_t firstErrorPos;
-
- private:
-  /**
-   * \brief Set the return type of the expression: Done by ExpressionParser
-   * according to which Parse* method is called. \see gd::ExpressionParser
-   */
-  void SetReturnType(gd::String type) { returnType = type; }
-
-  gd::String returnType;  // The type of the expression ("expression" (default),
-                          // "string"...)
-};
-
-}  // namespace gd
-
-#endif  // GDEXPRESSIONPARSER_H

Core/GDCore/Events/Parsers/ExpressionParser2.cpp

@@ -22,15 +22,6 @@ using namespace std;
 
 namespace gd {
 
-gd::String ExpressionParser2::NUMBER_FIRST_CHAR = ".0123456789";
-gd::String ExpressionParser2::DOT = ".";
-gd::String ExpressionParser2::PARAMETERS_SEPARATOR = ",";
-gd::String ExpressionParser2::QUOTE = "\"";
-gd::String ExpressionParser2::BRACKETS = "()[]{}";
-gd::String ExpressionParser2::EXPRESSION_OPERATORS = "+-<>?^=\\:!";
-gd::String ExpressionParser2::TERM_OPERATORS = "/*";
-gd::String ExpressionParser2::UNARY_OPERATORS = "+-";
-gd::String ExpressionParser2::WHITESPACES = " \n\r";
 gd::String ExpressionParser2::NAMESPACE_SEPARATOR = "::";
 
 ExpressionParser2::ExpressionParser2(
@@ -76,7 +67,7 @@ size_t GetMaximumParametersNumber(
 }  // namespace
 
 std::unique_ptr<ExpressionParserDiagnostic> ExpressionParser2::ValidateFunction(
-    const gd::FunctionNode& function, size_t functionStartPosition) {
+    const gd::FunctionCallNode& function, size_t functionStartPosition) {
   if (gd::MetadataProvider::IsBadExpressionMetadata(
           function.expressionMetadata)) {
     return gd::make_unique<ExpressionParserError>(
@@ -118,11 +109,13 @@ std::unique_ptr<ExpressionParserDiagnostic> ExpressionParser2::ValidateFunction(
 }
 
 std::unique_ptr<TextNode> ExpressionParser2::ReadText() {
-  SkipWhitespace();
-  if (!IsAnyChar("\"")) {
+  size_t textStartPosition = GetCurrentPosition();
+  SkipAllWhitespaces();
+  if (!CheckIfChar(IsQuote)) {
     auto text = gd::make_unique<TextNode>("");
     text->diagnostic =
         RaiseSyntaxError(_("A text must start with a double quote (\")."));
+    text->location = ExpressionParserLocation(textStartPosition, GetCurrentPosition());
     return text;
   }
   SkipChar();
@@ -157,6 +150,7 @@ std::unique_ptr<TextNode> ExpressionParser2::ReadText() {
   }
 
   auto text = gd::make_unique<TextNode>(parsedText);
+  text->location = ExpressionParserLocation(textStartPosition, GetCurrentPosition());
   if (!textParsingHasEnded) {
     text->diagnostic =
         RaiseSyntaxError(_("A text must end with a double quote (\"). Add a "
@@ -167,24 +161,25 @@ std::unique_ptr<TextNode> ExpressionParser2::ReadText() {
 }
 
 std::unique_ptr<NumberNode> ExpressionParser2::ReadNumber() {
-  SkipWhitespace();
+  size_t numberStartPosition = GetCurrentPosition();
+  SkipAllWhitespaces();
   gd::String parsedNumber;
 
   bool numberHasStarted = false;
   bool digitFound = false;
   bool dotFound = false;
   while (!IsEndReached()) {
-    if (IsAnyChar("0")) {
+    if (CheckIfChar(IsZeroDigit)) {
       numberHasStarted = true;
       digitFound = true;
       if (!parsedNumber.empty()) { // Ignore leading 0s.
         parsedNumber += GetCurrentChar();
       }
-    } else if (IsAnyChar("123456789")) {
+    } else if (CheckIfChar(IsNonZeroDigit)) {
       numberHasStarted = true;
       digitFound = true;
       parsedNumber += GetCurrentChar();
-    } else if (IsAnyChar(".") && !dotFound) {
+    } else if (CheckIfChar(IsDot) && !dotFound) {
       numberHasStarted = true;
       dotFound = true;
       if (parsedNumber == "") {
@@ -209,6 +204,7 @@ std::unique_ptr<NumberNode> ExpressionParser2::ReadNumber() {
   // valid in most languages so we allow this.
 
   auto number = gd::make_unique<NumberNode>(parsedNumber);
+  number->location = ExpressionParserLocation(numberStartPosition, GetCurrentPosition());
   if (!numberHasStarted || !digitFound) {
     number->diagnostic = RaiseSyntaxError(
         _("A number was expected. You must enter a number here."));

Core/GDCore/Events/Parsers/ExpressionParser2.h

@@ -48,8 +48,9 @@ class GD_CORE_API ExpressionParser2 {
    *
    * \param type Type of the expression: "string", "number",
    * type supported by gd::ParameterMetadata::IsObject, types supported by
-   * gd::ParameterMetadata::IsExpression or "unknown". \param expression The
-   * expression to parse \param objectName Specify the object name, only for the
+   * gd::ParameterMetadata::IsExpression or "unknown".
+   * \param expression The expression to parse
+   * \param objectName Specify the object name, only for the
    * case of "objectvar" type.
    *
    * \return The node representing the expression as a parsed tree.
@@ -71,18 +72,21 @@ class GD_CORE_API ExpressionParser2 {
   ///@{
   std::unique_ptr<ExpressionNode> Start(const gd::String &type,
                                         const gd::String &objectName = "") {
+    size_t expressionStartPosition = GetCurrentPosition();
     auto expression = Expression(type, objectName);
 
     // Check for extra characters at the end of the expression
     if (!IsEndReached()) {
-      auto op = gd::make_unique<OperatorNode>();
-      op->op = ' ';
+      auto op = gd::make_unique<OperatorNode>(type, ' ');
       op->leftHandSide = std::move(expression);
       op->rightHandSide = ReadUntilEnd("unknown");
 
       op->rightHandSide->diagnostic = RaiseSyntaxError(
           _("The expression has extra character at the end that should be "
             "removed (or completed if your expression is not finished)."));
+
+      op->location = ExpressionParserLocation(expressionStartPosition,
+                                              GetCurrentPosition());
       return std::move(op);
     }
 
@@ -91,22 +95,24 @@ class GD_CORE_API ExpressionParser2 {
 
   std::unique_ptr<ExpressionNode> Expression(
       const gd::String &type, const gd::String &objectName = "") {
-    SkipWhitespace();
+    SkipAllWhitespaces();
 
     size_t expressionStartPosition = GetCurrentPosition();
     std::unique_ptr<ExpressionNode> leftHandSide = Term(type, objectName);
 
-    SkipWhitespace();
+    SkipAllWhitespaces();
 
     if (IsEndReached()) return leftHandSide;
-    if (IsAnyChar(",)]")) return leftHandSide;
-    if (IsAnyChar(EXPRESSION_OPERATORS)) {
-      auto op = gd::make_unique<OperatorNode>();
-      op->op = GetCurrentChar();
+    if (CheckIfChar(IsExpressionEndingChar)) return leftHandSide;
+    if (CheckIfChar(IsExpressionOperator)) {
+      auto op = gd::make_unique<OperatorNode>(type, GetCurrentChar());
       op->leftHandSide = std::move(leftHandSide);
       op->diagnostic = ValidateOperator(type, GetCurrentChar());
       SkipChar();
       op->rightHandSide = Expression(type, objectName);
+
+      op->location = ExpressionParserLocation(expressionStartPosition,
+                                              GetCurrentPosition());
       return std::move(op);
     }
 
@@ -124,31 +130,35 @@ class GD_CORE_API ExpressionParser2 {
           "properly written.");
     }
 
-    auto op = gd::make_unique<OperatorNode>();
-    op->op = ' ';
+    auto op = gd::make_unique<OperatorNode>(type, ' ');
     op->leftHandSide = std::move(leftHandSide);
     op->rightHandSide = Expression(type, objectName);
+    op->location =
+        ExpressionParserLocation(expressionStartPosition, GetCurrentPosition());
     return std::move(op);
   }
 
   std::unique_ptr<ExpressionNode> Term(const gd::String &type,
                                        const gd::String &objectName) {
-    SkipWhitespace();
+    SkipAllWhitespaces();
 
+    size_t expressionStartPosition = GetCurrentPosition();
     std::unique_ptr<ExpressionNode> factor = Factor(type, objectName);
-    SkipWhitespace();
+
+    SkipAllWhitespaces();
 
     // This while loop is used instead of a recursion (like in Expression)
     // to guarantee the proper operator precedence. (Expression could also
     // be reworked to use a while loop).
-    while (IsAnyChar(TERM_OPERATORS)) {
-      auto op = gd::make_unique<OperatorNode>();
-      op->op = GetCurrentChar();
+    while (CheckIfChar(IsTermOperator)) {
+      auto op = gd::make_unique<OperatorNode>(type, GetCurrentChar());
       op->leftHandSide = std::move(factor);
       op->diagnostic = ValidateOperator(type, GetCurrentChar());
       SkipChar();
       op->rightHandSide = Factor(type, objectName);
-      SkipWhitespace();
+      op->location = ExpressionParserLocation(expressionStartPosition,
+                                              GetCurrentPosition());
+      SkipAllWhitespaces();
 
       factor = std::move(op);
     }
@@ -158,12 +168,12 @@ class GD_CORE_API ExpressionParser2 {
 
   std::unique_ptr<ExpressionNode> Factor(const gd::String &type,
                                          const gd::String &objectName) {
-    SkipWhitespace();
+    SkipAllWhitespaces();
 
     size_t expressionStartPosition = GetCurrentPosition();
     std::unique_ptr<ExpressionNode> factor;
 
-    if (IsAnyChar(QUOTE)) {
+    if (CheckIfChar(IsQuote)) {
       factor = ReadText();
       if (type == "number")
         factor->diagnostic =
@@ -173,14 +183,17 @@ class GD_CORE_API ExpressionParser2 {
         factor->diagnostic = RaiseTypeError(
             _("You entered a text, but this type was expected:") + type,
             expressionStartPosition);
-    } else if (IsAnyChar(UNARY_OPERATORS)) {
-      auto unaryOperator = gd::make_unique<UnaryOperatorNode>(GetCurrentChar());
+    } else if (CheckIfChar(IsUnaryOperator)) {
+      auto unaryOperator =
+          gd::make_unique<UnaryOperatorNode>(type, GetCurrentChar());
       unaryOperator->diagnostic = ValidateUnaryOperator(type, GetCurrentChar());
       SkipChar();
       unaryOperator->factor = Factor(type, objectName);
 
+      unaryOperator->location = ExpressionParserLocation(
+          expressionStartPosition, GetCurrentPosition());
       factor = std::move(unaryOperator);
-    } else if (IsAnyChar(NUMBER_FIRST_CHAR)) {
+    } else if (CheckIfChar(IsNumberFirstChar)) {
       factor = ReadNumber();
       if (type == "string")
         factor->diagnostic = RaiseTypeError(
@@ -190,16 +203,16 @@ class GD_CORE_API ExpressionParser2 {
         factor->diagnostic = RaiseTypeError(
             _("You entered a number, but this type was expected:") + type,
             expressionStartPosition);
-    } else if (IsAnyChar("(")) {
+    } else if (CheckIfChar(IsOpeningParenthesis)) {
       SkipChar();
       factor = SubExpression(type, objectName);
 
-      if (!IsAnyChar(")")) {
+      if (!CheckIfChar(IsClosingParenthesis)) {
         factor->diagnostic =
             RaiseSyntaxError(_("Missing a closing parenthesis. Add a closing "
                                "parenthesis for each opening parenthesis."));
       }
-      SkipIfIsAnyChar(")");
+      SkipIfChar(IsClosingParenthesis);
     } else if (IsIdentifierAllowedChar()) {
       // This is a place where the grammar differs according to the
       // type being expected.
@@ -218,92 +231,132 @@ class GD_CORE_API ExpressionParser2 {
 
   std::unique_ptr<SubExpressionNode> SubExpression(
       const gd::String &type, const gd::String &objectName) {
-    return std::move(
-        gd::make_unique<SubExpressionNode>(Expression(type, objectName)));
+    size_t expressionStartPosition = GetCurrentPosition();
+    auto subExpression =
+        gd::make_unique<SubExpressionNode>(type, Expression(type, objectName));
+    subExpression->location =
+        ExpressionParserLocation(expressionStartPosition, GetCurrentPosition());
+
+    return std::move(subExpression);
   };
 
-  std::unique_ptr<IdentifierOrFunctionOrEmptyNode> Identifier(
-      const gd::String &type) {
-    size_t identifierStartPosition = GetCurrentPosition();
-    gd::String name = ReadIdentifierName();
+  std::unique_ptr<IdentifierOrFunctionCallOrObjectFunctionNameOrEmptyNode>
+  Identifier(const gd::String &type) {
+    auto identifierAndLocation = ReadIdentifierName();
+    gd::String name = identifierAndLocation.name;
+    auto nameLocation = identifierAndLocation.location;
 
-    SkipWhitespace();
+    SkipAllWhitespaces();
 
+    // We consider a namespace separator to be allowed here and be part of the
+    // function name (or object name, but object names are not allowed to
+    // contain a ":"). This is because functions from extensions have their
+    // extension name prefix, and separated by the namespace separator. This
+    // could maybe be refactored to create different nodes in the future.
     if (IsNamespaceSeparator()) {
       SkipNamespaceSeparator();
+      SkipAllWhitespaces();
 
+      auto postNamespaceIdentifierAndLocation = ReadIdentifierName();
       name += NAMESPACE_SEPARATOR;
-      name += ReadIdentifierName();
+      name += postNamespaceIdentifierAndLocation.name;
+      ExpressionParserLocation completeNameLocation(
+          nameLocation.GetStartPosition(),
+          postNamespaceIdentifierAndLocation.location.GetEndPosition());
+      nameLocation = completeNameLocation;
     }
 
-    if (IsAnyChar("(")) {
-      SkipChar();
-      return FreeFunction(type, name, identifierStartPosition);
-    } else if (IsAnyChar(DOT)) {
-      SkipChar();
+    if (CheckIfChar(IsOpeningParenthesis)) {
+      ExpressionParserLocation openingParenthesisLocation = SkipChar();
+      return FreeFunction(type, name, nameLocation, openingParenthesisLocation);
+    } else if (CheckIfChar(IsDot)) {
+      ExpressionParserLocation dotLocation = SkipChar();
+      SkipAllWhitespaces();
       return ObjectFunctionOrBehaviorFunction(
-          type, name, identifierStartPosition);
+          type, name, nameLocation, dotLocation);
     } else {
       auto identifier = gd::make_unique<IdentifierNode>(name, type);
       if (type == "string") {
         identifier->diagnostic =
             RaiseTypeError(_("You must wrap your text inside double quotes "
                              "(example: \"Hello world\")."),
-                           identifierStartPosition);
+                           nameLocation.GetStartPosition());
       } else if (type == "number") {
-        identifier->diagnostic = RaiseTypeError(_("You must enter a number."),
-                                                identifierStartPosition);
+        identifier->diagnostic = RaiseTypeError(
+            _("You must enter a number."), nameLocation.GetStartPosition());
       } else if (!gd::ParameterMetadata::IsObject(type)) {
         identifier->diagnostic = RaiseTypeError(
             _("You've entered a name, but this type was expected:") + type,
-            identifierStartPosition);
+            nameLocation.GetStartPosition());
       }
 
+      identifier->location = ExpressionParserLocation(
+          nameLocation.GetStartPosition(), GetCurrentPosition());
       return std::move(identifier);
     }
   }
 
   std::unique_ptr<VariableNode> Variable(const gd::String &type,
                                          const gd::String &objectName) {
-    size_t identifierStartPosition = GetCurrentPosition();
+    auto identifierAndLocation = ReadIdentifierName();
+    const gd::String &name = identifierAndLocation.name;
+    const auto &nameLocation = identifierAndLocation.location;
 
-    gd::String name = ReadIdentifierName();
     auto variable = gd::make_unique<VariableNode>(type, name, objectName);
     variable->child = VariableAccessorOrVariableBracketAccessor();
 
+    variable->location = ExpressionParserLocation(
+        nameLocation.GetStartPosition(), GetCurrentPosition());
+    variable->nameLocation = nameLocation;
     return std::move(variable);
   }
 
   std::unique_ptr<VariableAccessorOrVariableBracketAccessorNode>
   VariableAccessorOrVariableBracketAccessor() {
-    std::unique_ptr<VariableAccessorOrVariableBracketAccessorNode> child;
-    SkipWhitespace();
-    if (IsAnyChar("[")) {
+    size_t childStartPosition = GetCurrentPosition();
+
+    SkipAllWhitespaces();
+    if (CheckIfChar(IsOpeningSquareBracket)) {
       SkipChar();
-      child =
+      auto child =
           gd::make_unique<VariableBracketAccessorNode>(Expression("string"));
 
-      if (!IsAnyChar("]")) {
+      if (!CheckIfChar(IsClosingSquareBracket)) {
         child->diagnostic =
             RaiseSyntaxError(_("Missing a closing bracket. Add a closing "
                                "bracket for each opening bracket."));
       }
-      SkipIfIsAnyChar("]");
+      SkipIfChar(IsClosingSquareBracket);
       child->child = VariableAccessorOrVariableBracketAccessor();
-    } else if (IsAnyChar(DOT)) {
-      SkipChar();
-      SkipWhitespace();
+      child->location =
+          ExpressionParserLocation(childStartPosition, GetCurrentPosition());
 
-      child = gd::make_unique<VariableAccessorNode>(ReadIdentifierName());
+      return std::move(child);
+    } else if (CheckIfChar(IsDot)) {
+      auto dotLocation = SkipChar();
+      SkipAllWhitespaces();
+
+      auto identifierAndLocation = ReadIdentifierName();
+      auto child =
+          gd::make_unique<VariableAccessorNode>(identifierAndLocation.name);
       child->child = VariableAccessorOrVariableBracketAccessor();
+      child->nameLocation = identifierAndLocation.location;
+      child->dotLocation = dotLocation;
+      child->location =
+          ExpressionParserLocation(childStartPosition, GetCurrentPosition());
+
+      return std::move(child);
     }
 
-    return child;
+    return std::move(
+        std::unique_ptr<VariableAccessorOrVariableBracketAccessorNode>());
   }
 
-  std::unique_ptr<FunctionNode> FreeFunction(const gd::String &type,
-                                             const gd::String &functionFullName,
-                                             size_t functionStartPosition) {
+  std::unique_ptr<FunctionCallNode> FreeFunction(
+      const gd::String &type,
+      const gd::String &functionFullName,
+      const ExpressionParserLocation &identifierLocation,
+      const ExpressionParserLocation &openingParenthesisLocation) {
     // TODO: error if trying to use function for type != "number" && != "string"
     // + Test for it
 
@@ -315,32 +368,49 @@ class GD_CORE_API ExpressionParser2 {
                          : MetadataProvider::GetStrExpressionMetadata(
                                platform, functionFullName);
 
-    auto parametersAndError = Parameters(metadata.parameters);
-    auto function = gd::make_unique<FunctionNode>(
-        type, std::move(parametersAndError.first), metadata, functionFullName);
-    function->diagnostic = std::move(parametersAndError.second);
+    auto parametersNode = Parameters(metadata.parameters);
+    auto function = gd::make_unique<FunctionCallNode>(
+        type, std::move(parametersNode.parameters), metadata, functionFullName);
+    function->diagnostic = std::move(parametersNode.diagnostic);
     if (!function->diagnostic)
-      function->diagnostic = ValidateFunction(*function, functionStartPosition);
+      function->diagnostic =
+          ValidateFunction(*function, identifierLocation.GetStartPosition());
 
+    function->location = ExpressionParserLocation(
+        identifierLocation.GetStartPosition(), GetCurrentPosition());
+    function->functionNameLocation = identifierLocation;
+    function->openingParenthesisLocation = openingParenthesisLocation;
+    function->closingParenthesisLocation =
+        parametersNode.closingParenthesisLocation;
     return std::move(function);
   }
 
-  std::unique_ptr<FunctionOrEmptyNode> ObjectFunctionOrBehaviorFunction(
+  std::unique_ptr<FunctionCallOrObjectFunctionNameOrEmptyNode>
+  ObjectFunctionOrBehaviorFunction(
       const gd::String &type,
       const gd::String &objectName,
-      size_t functionStartPosition) {
-    gd::String objectFunctionOrBehaviorName = ReadIdentifierName();
+      const ExpressionParserLocation &objectNameLocation,
+      const ExpressionParserLocation &objectNameDotLocation) {
+    auto identifierAndLocation = ReadIdentifierName();
+    const gd::String &objectFunctionOrBehaviorName = identifierAndLocation.name;
+    const auto &objectFunctionOrBehaviorNameLocation =
+        identifierAndLocation.location;
 
-    SkipWhitespace();
+    SkipAllWhitespaces();
 
     if (IsNamespaceSeparator()) {
-      SkipNamespaceSeparator();
+      ExpressionParserLocation namespaceSeparatorLocation =
+          SkipNamespaceSeparator();
+      SkipAllWhitespaces();
       return BehaviorFunction(type,
                               objectName,
                               objectFunctionOrBehaviorName,
-                              functionStartPosition);
-    } else if (IsAnyChar("(")) {
-      SkipChar();
+                              objectNameLocation,
+                              objectNameDotLocation,
+                              objectFunctionOrBehaviorNameLocation,
+                              namespaceSeparatorLocation);
+    } else if (CheckIfChar(IsOpeningParenthesis)) {
+      ExpressionParserLocation openingParenthesisLocation = SkipChar();
 
       gd::String objectType =
           GetTypeOfObject(globalObjectsContainer, objectsContainer, objectName);
@@ -354,40 +424,60 @@ class GD_CORE_API ExpressionParser2 {
               : MetadataProvider::GetObjectStrExpressionMetadata(
                     platform, objectType, objectFunctionOrBehaviorName);
 
-      auto parametersAndError = Parameters(metadata.parameters, objectName);
-      auto function =
-          gd::make_unique<FunctionNode>(type,
-                                        objectName,
-                                        std::move(parametersAndError.first),
-                                        metadata,
-                                        objectFunctionOrBehaviorName);
-      function->diagnostic = std::move(parametersAndError.second);
+      auto parametersNode = Parameters(metadata.parameters, objectName);
+      auto function = gd::make_unique<FunctionCallNode>(
+          type,
+          objectName,
+          std::move(parametersNode.parameters),
+          metadata,
+          objectFunctionOrBehaviorName);
+      function->diagnostic = std::move(parametersNode.diagnostic);
       if (!function->diagnostic)
         function->diagnostic =
-            ValidateFunction(*function, functionStartPosition);
+            ValidateFunction(*function, objectNameLocation.GetStartPosition());
 
+      function->location = ExpressionParserLocation(
+          objectNameLocation.GetStartPosition(), GetCurrentPosition());
+      function->objectNameLocation = objectNameLocation;
+      function->objectNameDotLocation = objectNameDotLocation;
+      function->functionNameLocation = objectFunctionOrBehaviorNameLocation;
+      function->openingParenthesisLocation = openingParenthesisLocation;
+      function->closingParenthesisLocation =
+          parametersNode.closingParenthesisLocation;
       return std::move(function);
     }
 
-    auto node = gd::make_unique<EmptyNode>(type);
+    auto node = gd::make_unique<ObjectFunctionNameNode>(
+        type, objectName, objectFunctionOrBehaviorName);
     node->diagnostic = RaiseSyntaxError(
         _("An opening parenthesis (for an object expression), or double colon "
           "(::) was expected (for a behavior expression)."));
 
+    node->location = ExpressionParserLocation(
+        objectNameLocation.GetStartPosition(), GetCurrentPosition());
+    node->objectNameLocation = objectNameLocation;
+    node->objectNameDotLocation = objectNameDotLocation;
+    node->objectFunctionOrBehaviorNameLocation =
+        objectFunctionOrBehaviorNameLocation;
     return std::move(node);
   }
 
-  std::unique_ptr<FunctionOrEmptyNode> BehaviorFunction(
+  std::unique_ptr<FunctionCallOrObjectFunctionNameOrEmptyNode> BehaviorFunction(
       const gd::String &type,
       const gd::String &objectName,
       const gd::String &behaviorName,
-      size_t functionStartPosition) {
-    gd::String functionName = ReadIdentifierName();
+      const ExpressionParserLocation &objectNameLocation,
+      const ExpressionParserLocation &objectNameDotLocation,
+      const ExpressionParserLocation &behaviorNameLocation,
+      const ExpressionParserLocation &behaviorNameNamespaceSeparatorLocation) {
+    auto identifierAndLocation = ReadIdentifierName();
+    const gd::String &functionName = identifierAndLocation.name;
+    const auto &functionNameLocation = identifierAndLocation.location;
 
-    SkipWhitespace();
+    SkipAllWhitespaces();
 
-    if (IsAnyChar("(")) {
-      SkipChar();
+    if (CheckIfChar(IsOpeningParenthesis)) {
+      ExpressionParserLocation openingParenthesisLocation = SkipChar();
 
       gd::String behaviorType = GetTypeOfBehavior(
           globalObjectsContainer, objectsContainer, behaviorName);
@@ -400,35 +490,61 @@ class GD_CORE_API ExpressionParser2 {
                            : MetadataProvider::GetBehaviorStrExpressionMetadata(
                                  platform, behaviorType, functionName);
 
-      auto parametersAndError =
+      auto parametersNode =
           Parameters(metadata.parameters, objectName, behaviorName);
-      auto function =
-          gd::make_unique<FunctionNode>(type,
-                                        objectName,
-                                        behaviorName,
-                                        std::move(parametersAndError.first),
-                                        metadata,
-                                        functionName);
-      function->diagnostic = std::move(parametersAndError.second);
+      auto function = gd::make_unique<FunctionCallNode>(
+          type,
+          objectName,
+          behaviorName,
+          std::move(parametersNode.parameters),
+          metadata,
+          functionName);
+      function->diagnostic = std::move(parametersNode.diagnostic);
       if (!function->diagnostic)
         function->diagnostic =
-            ValidateFunction(*function, functionStartPosition);
+            ValidateFunction(*function, objectNameLocation.GetStartPosition());
 
+      function->location = ExpressionParserLocation(
+          objectNameLocation.GetStartPosition(), GetCurrentPosition());
+      function->objectNameLocation = objectNameLocation;
+      function->objectNameDotLocation = objectNameDotLocation;
+      function->behaviorNameLocation = behaviorNameLocation;
+      function->behaviorNameNamespaceSeparatorLocation =
+          behaviorNameNamespaceSeparatorLocation;
+      function->openingParenthesisLocation = openingParenthesisLocation;
+      function->closingParenthesisLocation =
+          parametersNode.closingParenthesisLocation;
+      function->functionNameLocation = functionNameLocation;
       return std::move(function);
     } else {
-      auto node = gd::make_unique<EmptyNode>(type);
+      auto node = gd::make_unique<ObjectFunctionNameNode>(
+          type, objectName, behaviorName, functionName);
       node->diagnostic = RaiseSyntaxError(
           _("An opening parenthesis was expected here to call a function."));
 
+      node->location = ExpressionParserLocation(
+          objectNameLocation.GetStartPosition(), GetCurrentPosition());
+      node->objectNameLocation = objectNameLocation;
+      node->objectNameDotLocation = objectNameDotLocation;
+      node->objectFunctionOrBehaviorNameLocation = behaviorNameLocation;
+      node->behaviorNameNamespaceSeparatorLocation =
+          behaviorNameNamespaceSeparatorLocation;
+      node->behaviorFunctionNameLocation = functionNameLocation;
       return std::move(node);
     }
   }
 
-  std::pair<std::vector<std::unique_ptr<ExpressionNode>>,
-            std::unique_ptr<gd::ExpressionParserError>>
-  Parameters(std::vector<gd::ParameterMetadata> parameterMetadata,
-             const gd::String &objectName = "",
-             const gd::String &behaviorName = "") {
+  // A temporary node that will be integrated into function nodes.
+  struct ParametersNode {
+    std::vector<std::unique_ptr<ExpressionNode>> parameters;
+    std::unique_ptr<gd::ExpressionParserError> diagnostic;
+    ExpressionParserLocation closingParenthesisLocation;
+  };
+
+  ParametersNode Parameters(
+      std::vector<gd::ParameterMetadata> parameterMetadata,
+      const gd::String &objectName = "",
+      const gd::String &behaviorName = "") {
     std::vector<std::unique_ptr<ExpressionNode>> parameters;
 
     // By convention, object is always the first parameter, and behavior the
@@ -437,11 +553,12 @@ class GD_CORE_API ExpressionParser2 {
         WrittenParametersFirstIndex(objectName, behaviorName);
 
     while (!IsEndReached()) {
-      SkipWhitespace();
+      SkipAllWhitespaces();
 
-      if (IsAnyChar(")")) {
-        SkipChar();
-        return std::make_pair(std::move(parameters), nullptr);
+      if (CheckIfChar(IsClosingParenthesis)) {
+        auto closingParenthesisLocation = SkipChar();
+        return ParametersNode{
+            std::move(parameters), nullptr, closingParenthesisLocation};
       } else {
         if (parameterIndex < parameterMetadata.size()) {
           const gd::String &type = parameterMetadata[parameterIndex].GetType();
@@ -479,16 +596,18 @@ class GD_CORE_API ExpressionParser2 {
               GetCurrentPosition());
         }
 
-        SkipWhitespace();
-        SkipIfIsAnyChar(PARAMETERS_SEPARATOR);
+        SkipAllWhitespaces();
+        SkipIfChar(IsParameterSeparator);
         parameterIndex++;
       }
     }
 
-    return std::make_pair(
+    ExpressionParserLocation invalidClosingParenthesisLocation;
+    return ParametersNode{
         std::move(parameters),
         RaiseSyntaxError(_("The list of parameters is not terminated. Add a "
-                           "closing parenthesis to end the parameters.")));
+                           "closing parenthesis to end the parameters.")),
+        invalidClosingParenthesisLocation};
   }
   ///@}
 
@@ -497,7 +616,7 @@ class GD_CORE_API ExpressionParser2 {
    */
   ///@{
   std::unique_ptr<ExpressionParserDiagnostic> ValidateFunction(
-      const gd::FunctionNode &function, size_t functionStartPosition);
+      const gd::FunctionCallNode &function, size_t functionStartPosition);
 
   std::unique_ptr<ExpressionParserDiagnostic> ValidateOperator(
       const gd::String &type, gd::String::value_type operatorChar) {
@@ -525,7 +644,8 @@ class GD_CORE_API ExpressionParser2 {
     } else if (gd::ParameterMetadata::IsObject(type)) {
       return gd::make_unique<ExpressionParserError>(
           "invalid_operator",
-          _("Operators (+, -, /, *) can't be used with an object name. Remove the operator."),
+          _("Operators (+, -, /, *) can't be used with an object name. Remove "
+            "the operator."),
           GetCurrentPosition());
     } else if (gd::ParameterMetadata::IsExpression("variable", type)) {
       return gd::make_unique<ExpressionParserError>(
@@ -561,7 +681,8 @@ class GD_CORE_API ExpressionParser2 {
     } else if (gd::ParameterMetadata::IsObject(type)) {
       return gd::make_unique<ExpressionParserError>(
           "invalid_operator",
-          _("Operators (+, -) can't be used with an object name. Remove the operator."),
+          _("Operators (+, -) can't be used with an object name. Remove the "
+            "operator."),
           GetCurrentPosition());
     } else if (gd::ParameterMetadata::IsExpression("variable", type)) {
       return gd::make_unique<ExpressionParserError>(
@@ -579,55 +700,133 @@ class GD_CORE_API ExpressionParser2 {
    * Read tokens or characters
    */
   ///@{
-  void SkipChar() { currentPosition++; }
+  ExpressionParserLocation SkipChar() {
+    size_t startPosition = currentPosition;
+    return ExpressionParserLocation(startPosition, ++currentPosition);
+  }
 
-  void SkipWhitespace() {
+  void SkipAllWhitespaces() {
     while (currentPosition < expression.size() &&
-           WHITESPACES.find(expression[currentPosition]) != gd::String::npos) {
+           IsWhitespace(expression[currentPosition])) {
       currentPosition++;
     }
   }
 
-  void SkipIfIsAnyChar(const gd::String &allowedCharacters) {
-    if (IsAnyChar(allowedCharacters)) {
+  void SkipIfChar(
+      const std::function<bool(gd::String::value_type)> &predicate) {
+    if (CheckIfChar(predicate)) {
       currentPosition++;
     }
   }
 
-  void SkipNamespaceSeparator() {
+  ExpressionParserLocation SkipNamespaceSeparator() {
+    size_t startPosition = currentPosition;
     // Namespace separator is a special kind of delimiter as it is 2 characters
     // long
     if (IsNamespaceSeparator()) {
       currentPosition += NAMESPACE_SEPARATOR.size();
     }
+
+    return ExpressionParserLocation(startPosition, currentPosition);
   }
 
-  bool IsAnyChar(const gd::String &allowedCharacters) {
-    if (currentPosition < expression.size() &&
-        allowedCharacters.find(expression[currentPosition]) !=
-            gd::String::npos) {
-      return true;
-    }
+  bool CheckIfChar(
+      const std::function<bool(gd::String::value_type)> &predicate) {
+    if (currentPosition >= expression.size()) return false;
+    gd::String::value_type character = expression[currentPosition];
 
-    return false;
+    return predicate(character);
   }
 
   bool IsIdentifierAllowedChar() {
-    if (currentPosition < expression.size() &&
-        PARAMETERS_SEPARATOR.find(expression[currentPosition]) ==
-            gd::String::npos &&
-        DOT.find(expression[currentPosition]) == gd::String::npos &&
-        QUOTE.find(expression[currentPosition]) == gd::String::npos &&
-        BRACKETS.find(expression[currentPosition]) == gd::String::npos &&
-        EXPRESSION_OPERATORS.find(expression[currentPosition]) ==
-            gd::String::npos &&
-        TERM_OPERATORS.find(expression[currentPosition]) == gd::String::npos) {
+    if (currentPosition >= expression.size()) return false;
+    gd::String::value_type character = expression[currentPosition];
+
+    // Quickly compare if the character is a number or ASCII character.
+    if ((character >= '0' && character <= '9') ||
+        (character >= 'A' && character <= 'Z') ||
+        (character >= 'a' && character <= 'z'))
+      return true;
+
+    // Otherwise do the full check against separators forbidden in identifiers.
+    if (!IsParameterSeparator(character) && !IsDot(character) &&
+        !IsQuote(character) && !IsBracket(character) &&
+        !IsExpressionOperator(character) && !IsTermOperator(character)) {
       return true;
     }
 
     return false;
   }
 
+  static bool IsWhitespace(gd::String::value_type character) {
+    return character == ' ' || character == '\n' || character == '\r';
+  }
+
+  static bool IsParameterSeparator(gd::String::value_type character) {
+    return character == ',';
+  }
+
+  static bool IsDot(gd::String::value_type character) {
+    return character == '.';
+  }
+
+  static bool IsQuote(gd::String::value_type character) {
+    return character == '"';
+  }
+
+  static bool IsBracket(gd::String::value_type character) {
+    return character == '(' || character == ')' || character == '[' ||
+           character == ']' || character == '{' || character == '}';
+  }
+
+  static bool IsOpeningParenthesis(gd::String::value_type character) {
+    return character == '(';
+  }
+
+  static bool IsClosingParenthesis(gd::String::value_type character) {
+    return character == ')';
+  }
+
+  static bool IsOpeningSquareBracket(gd::String::value_type character) {
+    return character == '[';
+  }
+
+  static bool IsClosingSquareBracket(gd::String::value_type character) {
+    return character == ']';
+  }
+
+  static bool IsExpressionEndingChar(gd::String::value_type character) {
+    return character == ',' || IsClosingParenthesis(character) ||
+           IsClosingSquareBracket(character);
+  }
+
+  static bool IsExpressionOperator(gd::String::value_type character) {
+    return character == '+' || character == '-' || character == '<' ||
+           character == '>' || character == '?' || character == '^' ||
+           character == '=' || character == '\\' || character == ':' ||
+           character == '!';
+  }
+
+  static bool IsUnaryOperator(gd::String::value_type character) {
+    return character == '+' || character == '-';
+  }
+
+  static bool IsTermOperator(gd::String::value_type character) {
+    return character == '/' || character == '*';
+  }
+
+  static bool IsNumberFirstChar(gd::String::value_type character) {
+    return character == '.' || (character >= '0' && character <= '9');
+  }
+
+  static bool IsNonZeroDigit(gd::String::value_type character) {
+    return (character >= '1' && character <= '9');
+  }
+
+  static bool IsZeroDigit(gd::String::value_type character) {
+    return character == '0';
+  }
+
   bool IsNamespaceSeparator() {
     // Namespace separator is a special kind of delimiter as it is 2 characters
     // long
@@ -638,12 +837,20 @@ class GD_CORE_API ExpressionParser2 {
 
   bool IsEndReached() { return currentPosition >= expression.size(); }
 
-  gd::String ReadIdentifierName() {
+  // A temporary node used when reading an identifier
+  struct IdentifierAndLocation {
     gd::String name;
+    ExpressionParserLocation location;
+  };
+
+  IdentifierAndLocation ReadIdentifierName() {
+    gd::String name;
+    size_t startPosition = currentPosition;
     while (currentPosition < expression.size() &&
            (IsIdentifierAllowedChar()
             // Allow whitespace in identifier name for compatibility
-            || expression[currentPosition] == ' ')) {
+            ||
+            expression[currentPosition] == ' ')) {
       name += expression[currentPosition];
       currentPosition++;
     }
@@ -651,12 +858,23 @@ class GD_CORE_API ExpressionParser2 {
     // Trim whitespace at the end (we allow them for compatibility inside
     // the name, but after the last character that is not whitespace, they
     // should be ignore again).
-    size_t lastCharacterPos = name.find_last_not_of(WHITESPACES);
-    if (!name.empty() && (lastCharacterPos + 1) < name.size()) {
-      name.erase(lastCharacterPos + 1);
+    if (!name.empty() && IsWhitespace(name[name.size() - 1])) {
+      size_t lastCharacterPos = name.size() - 1;
+      while (lastCharacterPos < name.size() &&
+             IsWhitespace(name[lastCharacterPos])) {
+        lastCharacterPos--;
+      }
+      if ((lastCharacterPos + 1) < name.size()) {
+        name.erase(lastCharacterPos + 1);
+      }
     }
 
-    return name;
+    IdentifierAndLocation identifierAndLocation{
+        name,
+        // The location is ignoring the trailing whitespace (only whitespace
+        // inside the identifier are allowed for compatibility).
+        ExpressionParserLocation(startPosition, startPosition + name.size())};
+    return identifierAndLocation;
   }
 
   std::unique_ptr<TextNode> ReadText();
@@ -664,24 +882,32 @@ class GD_CORE_API ExpressionParser2 {
   std::unique_ptr<NumberNode> ReadNumber();
 
   std::unique_ptr<EmptyNode> ReadUntilWhitespace(gd::String type) {
+    size_t startPosition = GetCurrentPosition();
     gd::String text;
     while (currentPosition < expression.size() &&
-           WHITESPACES.find(expression[currentPosition]) == gd::String::npos) {
+           !IsWhitespace(expression[currentPosition])) {
       text += expression[currentPosition];
       currentPosition++;
     }
 
-    return gd::make_unique<EmptyNode>(type, text);
+    auto node = gd::make_unique<EmptyNode>(type, text);
+    node->location =
+        ExpressionParserLocation(startPosition, GetCurrentPosition());
+    return node;
   }
 
   std::unique_ptr<EmptyNode> ReadUntilEnd(gd::String type) {
+    size_t startPosition = GetCurrentPosition();
     gd::String text;
     while (currentPosition < expression.size()) {
       text += expression[currentPosition];
       currentPosition++;
     }
 
-    return gd::make_unique<EmptyNode>(type, text);
+    auto node = gd::make_unique<EmptyNode>(type, text);
+    node->location =
+        ExpressionParserLocation(startPosition, GetCurrentPosition());
+    return node;
   }
 
   size_t GetCurrentPosition() { return currentPosition; }
@@ -746,15 +972,6 @@ class GD_CORE_API ExpressionParser2 {
   const gd::ObjectsContainer &globalObjectsContainer;
   const gd::ObjectsContainer &objectsContainer;
 
-  static gd::String NUMBER_FIRST_CHAR;
-  static gd::String DOT;
-  static gd::String PARAMETERS_SEPARATOR;
-  static gd::String QUOTE;
-  static gd::String BRACKETS;
-  static gd::String EXPRESSION_OPERATORS;
-  static gd::String TERM_OPERATORS;
-  static gd::String UNARY_OPERATORS;
-  static gd::String WHITESPACES;
   static gd::String NAMESPACE_SEPARATOR;
 };
 

Core/GDCore/Events/Parsers/ExpressionParser2Node.h

@@ -20,6 +20,24 @@ class ExpressionMetadata;
 
 namespace gd {
 
+struct ExpressionParserLocation {
+  ExpressionParserLocation() : isValid(false){};
+  ExpressionParserLocation(size_t position)
+      : isValid(true), startPosition(position), endPosition(position){};
+  ExpressionParserLocation(size_t startPosition_, size_t endPosition_)
+      : isValid(true),
+        startPosition(startPosition_),
+        endPosition(endPosition_){};
+  size_t GetStartPosition() const { return startPosition; }
+  size_t GetEndPosition() const { return endPosition; }
+  bool IsValid() const { return isValid; }
+
+ private:
+  bool isValid;
+  size_t startPosition;
+  size_t endPosition;
+};
+
 /**
  * \brief A diagnostic that can be attached to a gd::ExpressionNode.
  */
@@ -40,30 +58,25 @@ struct ExpressionParserError : public ExpressionParserDiagnostic {
   ExpressionParserError(const gd::String &type_,
                         const gd::String &message_,
                         size_t position_)
-      : type(type_),
-        message(message_),
-        startPosition(position_),
-        endPosition(position_){};
+      : type(type_), message(message_), location(position_){};
   ExpressionParserError(const gd::String &type_,
                         const gd::String &message_,
                         size_t startPosition_,
                         size_t endPosition_)
       : type(type_),
         message(message_),
-        startPosition(startPosition_),
-        endPosition(endPosition_){};
+        location(startPosition_, endPosition_){};
   virtual ~ExpressionParserError(){};
 
   bool IsError() override { return true; }
   const gd::String &GetMessage() override { return message; }
-  size_t GetStartPosition() override { return startPosition; }
-  size_t GetEndPosition() override { return endPosition; }
+  size_t GetStartPosition() override { return location.GetStartPosition(); }
+  size_t GetEndPosition() override { return location.GetEndPosition(); }
 
  private:
   gd::String type;
   gd::String message;
-  size_t startPosition;
-  size_t endPosition;
+  ExpressionParserLocation location;
 };
 
 /**
@@ -75,16 +88,26 @@ struct ExpressionNode {
   virtual void Visit(ExpressionParser2NodeWorker &worker){};
 
   std::unique_ptr<ExpressionParserDiagnostic> diagnostic;
+  ExpressionParserLocation location;  ///< The location of the entire node. Some
+                                      ///nodes might have other locations stored
+                                      ///inside them. For example, a function
+                                      ///can store the position of the object
+                                      ///name, the dot, the function name,
+                                      ///etc...
 };
 
 struct SubExpressionNode : public ExpressionNode {
-  SubExpressionNode(std::unique_ptr<ExpressionNode> expression_)
-      : expression(std::move(expression_)){};
+  SubExpressionNode(const gd::String &type_,
+                    std::unique_ptr<ExpressionNode> expression_)
+      : type(type_), expression(std::move(expression_)){};
   virtual ~SubExpressionNode(){};
   virtual void Visit(ExpressionParser2NodeWorker &worker) {
     worker.OnVisitSubExpressionNode(*this);
   };
 
+  gd::String type;  // "string", "number", type supported by
+                    // gd::ParameterMetadata::IsObject, types supported by
+                    // gd::ParameterMetadata::IsExpression or "unknown".
   std::unique_ptr<ExpressionNode> expression;
 };
 
@@ -92,6 +115,8 @@ struct SubExpressionNode : public ExpressionNode {
  * \brief An operator node. For example: "lhs + rhs".
  */
 struct OperatorNode : public ExpressionNode {
+  OperatorNode(const gd::String &type_, gd::String::value_type op_)
+      : type(type_), op(op_){};
   virtual ~OperatorNode(){};
   virtual void Visit(ExpressionParser2NodeWorker &worker) {
     worker.OnVisitOperatorNode(*this);
@@ -99,6 +124,9 @@ struct OperatorNode : public ExpressionNode {
 
   std::unique_ptr<ExpressionNode> leftHandSide;
   std::unique_ptr<ExpressionNode> rightHandSide;
+  gd::String type;  // "string", "number", type supported by
+                    // gd::ParameterMetadata::IsObject, types supported by
+                    // gd::ParameterMetadata::IsExpression or "unknown".
   gd::String::value_type op;
 };
 
@@ -106,13 +134,17 @@ struct OperatorNode : public ExpressionNode {
  * \brief A unary operator node. For example: "-2".
  */
 struct UnaryOperatorNode : public ExpressionNode {
-  UnaryOperatorNode(gd::String::value_type op_) : op(op_){};
+  UnaryOperatorNode(const gd::String &type_, gd::String::value_type op_)
+      : type(type_), op(op_){};
   virtual ~UnaryOperatorNode(){};
   virtual void Visit(ExpressionParser2NodeWorker &worker) {
     worker.OnVisitUnaryOperatorNode(*this);
   };
 
   std::unique_ptr<ExpressionNode> factor;
+  gd::String type;  // "string", "number", type supported by
+                    // gd::ParameterMetadata::IsObject, types supported by
+                    // gd::ParameterMetadata::IsExpression or "unknown".
   gd::String::value_type op;
 };
 
@@ -170,6 +202,8 @@ struct VariableNode : public ExpressionNode {
 
   std::unique_ptr<VariableAccessorOrVariableBracketAccessorNode>
       child;  // Can be nullptr if no accessor
+
+  ExpressionParserLocation nameLocation;
 };
 
 /**
@@ -185,6 +219,8 @@ struct VariableAccessorNode
   };
 
   gd::String name;
+  ExpressionParserLocation nameLocation;
+  ExpressionParserLocation dotLocation;
 };
 
 /**
@@ -203,12 +239,14 @@ struct VariableBracketAccessorNode
   std::unique_ptr<ExpressionNode> expression;
 };
 
-struct IdentifierOrFunctionOrEmptyNode : public ExpressionNode {};
+struct IdentifierOrFunctionCallOrObjectFunctionNameOrEmptyNode
+    : public ExpressionNode {};
 
 /**
- * \brief An identifier node, usually representing an object.
+ * \brief An identifier node, usually representing an object or a function name.
  */
-struct IdentifierNode : public IdentifierOrFunctionOrEmptyNode {
+struct IdentifierNode
+    : public IdentifierOrFunctionCallOrObjectFunctionNameOrEmptyNode {
   IdentifierNode(const gd::String &identifierName_, const gd::String &type_)
       : identifierName(identifierName_), type(type_){};
   virtual ~IdentifierNode(){};
@@ -220,64 +258,142 @@ struct IdentifierNode : public IdentifierOrFunctionOrEmptyNode {
   gd::String type;
 };
 
-struct FunctionOrEmptyNode : public IdentifierOrFunctionOrEmptyNode {
-  virtual ~FunctionOrEmptyNode(){};
+struct FunctionCallOrObjectFunctionNameOrEmptyNode
+    : public IdentifierOrFunctionCallOrObjectFunctionNameOrEmptyNode {
+  virtual ~FunctionCallOrObjectFunctionNameOrEmptyNode(){};
   void Visit(ExpressionParser2NodeWorker &worker) override{};
 };
 
 /**
- * \brief A function node. For example: "MyExtension::MyFunction(1, 2)".
+ * \brief The name of a function to call on an object or the behavior
+ * For example: "MyObject.Function" or "MyObject.Physics" or
+ * "MyObject.Physics::LinearVelocity".
  */
-struct FunctionNode : public FunctionOrEmptyNode {
-  FunctionNode(const gd::String &type_,
-               std::vector<std::unique_ptr<ExpressionNode>> parameters_,
-               const ExpressionMetadata &expressionMetadata_,
-               const gd::String &functionName_)
+struct ObjectFunctionNameNode
+    : public FunctionCallOrObjectFunctionNameOrEmptyNode {
+  ObjectFunctionNameNode(const gd::String &type_,
+                         const gd::String &objectName_,
+                         const gd::String &objectFunctionOrBehaviorName_)
+      : type(type_),
+        objectName(objectName_),
+        objectFunctionOrBehaviorName(objectFunctionOrBehaviorName_) {}
+  ObjectFunctionNameNode(const gd::String &type_,
+                         const gd::String &objectName_,
+                         const gd::String &behaviorName_,
+                         const gd::String &behaviorFunctionName_)
+      : type(type_),
+        objectName(objectName_),
+        objectFunctionOrBehaviorName(behaviorName_),
+        behaviorFunctionName(behaviorFunctionName_) {}
+  virtual ~ObjectFunctionNameNode(){};
+  virtual void Visit(ExpressionParser2NodeWorker &worker) {
+    worker.OnVisitObjectFunctionNameNode(*this);
+  };
+
+  gd::String type;  // This could be removed if the type ("string", "number",
+                    // type supported by gd::ParameterMetadata::IsObject, types
+                    // supported by gd::ParameterMetadata::IsExpression or
+                    // "unknown") was stored in ExpressionMetadata.
+  gd::String objectName;
+  gd::String objectFunctionOrBehaviorName;  ///< Behavior name if
+                                            ///`behaviorFunctionName` is not
+                                            ///empty.
+  gd::String behaviorFunctionName;          ///< If empty, then
+                                    ///objectFunctionOrBehaviorName is filled
+                                    ///with the behavior name.
+
+  ExpressionParserLocation
+      objectNameLocation;  ///< Location of the object name.
+  ExpressionParserLocation
+      objectNameDotLocation;  ///< Location of the "." after the object name.
+  ExpressionParserLocation objectFunctionOrBehaviorNameLocation;  ///< Location
+                                                                  ///of object
+                                                                  ///function
+                                                                  ///name or
+                                                                  ///behavior
+                                                                  ///name.
+  ExpressionParserLocation
+      behaviorNameNamespaceSeparatorLocation;  ///< Location of the "::"
+                                               ///separator, if any.
+  ExpressionParserLocation behaviorFunctionNameLocation;  ///< Location of the
+                                                          ///behavior function
+                                                          ///name, if any.
+};
+
+/**
+ * \brief A function call node (either free function, object function or object
+ * behavior function).
+ * For example: "MyExtension::MyFunction(1, 2)", "MyObject.Function()" or
+ * "MyObject.Physics::LinearVelocity()".
+ */
+struct FunctionCallNode : public FunctionCallOrObjectFunctionNameOrEmptyNode {
+  FunctionCallNode(const gd::String &type_,
+                   std::vector<std::unique_ptr<ExpressionNode>> parameters_,
+                   const ExpressionMetadata &expressionMetadata_,
+                   const gd::String &functionName_)
       : type(type_),
         parameters(std::move(parameters_)),
         expressionMetadata(expressionMetadata_),
         functionName(functionName_){};
-  FunctionNode(const gd::String &type_,
-               const gd::String &objectName_,
-               std::vector<std::unique_ptr<ExpressionNode>> parameters_,
-               const ExpressionMetadata &expressionMetadata_,
-               const gd::String &functionName_)
+  FunctionCallNode(const gd::String &type_,
+                   const gd::String &objectName_,
+                   std::vector<std::unique_ptr<ExpressionNode>> parameters_,
+                   const ExpressionMetadata &expressionMetadata_,
+                   const gd::String &functionName_)
       : type(type_),
         objectName(objectName_),
         parameters(std::move(parameters_)),
         expressionMetadata(expressionMetadata_),
         functionName(functionName_){};
-  FunctionNode(const gd::String &type_,
-               const gd::String &objectName_,
-               const gd::String &behaviorName_,
-               std::vector<std::unique_ptr<ExpressionNode>> parameters_,
-               const ExpressionMetadata &expressionMetadata_,
-               const gd::String &functionName_)
+  FunctionCallNode(const gd::String &type_,
+                   const gd::String &objectName_,
+                   const gd::String &behaviorName_,
+                   std::vector<std::unique_ptr<ExpressionNode>> parameters_,
+                   const ExpressionMetadata &expressionMetadata_,
+                   const gd::String &functionName_)
       : type(type_),
         objectName(objectName_),
         behaviorName(behaviorName_),
         parameters(std::move(parameters_)),
         expressionMetadata(expressionMetadata_),
         functionName(functionName_){};
-  virtual ~FunctionNode(){};
+  virtual ~FunctionCallNode(){};
   virtual void Visit(ExpressionParser2NodeWorker &worker) {
-    worker.OnVisitFunctionNode(*this);
+    worker.OnVisitFunctionCallNode(*this);
   };
 
-  gd::String type;  // This could be removed if the type ("string" or "number")
-                    // was stored in ExpressionMetadata.
+  gd::String type;  // This could be removed if the type ("string", "number",
+                    // type supported by gd::ParameterMetadata::IsObject, types
+                    // supported by gd::ParameterMetadata::IsExpression or
+                    // "unknown") was stored in ExpressionMetadata.
   gd::String objectName;
   gd::String behaviorName;
   std::vector<std::unique_ptr<ExpressionNode>> parameters;
   const ExpressionMetadata &expressionMetadata;
   gd::String functionName;
+
+  ExpressionParserLocation
+      functionNameLocation;  ///< Location of the function name.
+  ExpressionParserLocation
+      objectNameLocation;  ///< Location of the object name, if any.
+  ExpressionParserLocation
+      objectNameDotLocation;  ///< Location of the "." after the object name.
+  ExpressionParserLocation
+      behaviorNameLocation;  ///< Location of the behavior name, if any.
+  ExpressionParserLocation
+      behaviorNameNamespaceSeparatorLocation;  ///< Location of the "::"
+                                               ///separator, if any.
+  ExpressionParserLocation
+      openingParenthesisLocation;  ///< Location of the "(".
+  ExpressionParserLocation
+      closingParenthesisLocation;  ///< Location of the ")".
 };
 
 /**
  * \brief An empty node, used when parsing failed/a syntax error was
  * encountered and any other node could not make sense.
  */
-struct EmptyNode : public FunctionOrEmptyNode {
+struct EmptyNode : public FunctionCallOrObjectFunctionNameOrEmptyNode {
   EmptyNode(const gd::String &type_, const gd::String &text_ = "")
       : type(type_), text(text_){};
   virtual ~EmptyNode(){};
@@ -285,10 +401,12 @@ struct EmptyNode : public FunctionOrEmptyNode {
     worker.OnVisitEmptyNode(*this);
   };
 
-  gd::String type;
+  gd::String type;  // "string", "number", type supported by
+                    // gd::ParameterMetadata::IsObject, types supported by
+                    // gd::ParameterMetadata::IsExpression or "unknown".
   gd::String text;
 };
 
 }  // namespace gd
 
-#endif
+#endif

Core/GDCore/Events/Parsers/ExpressionParser2NodePrinter.h

@@ -92,7 +92,15 @@ class GD_CORE_API ExpressionParser2NodePrinter
   void OnVisitIdentifierNode(IdentifierNode& node) override {
     output += node.identifierName;
   }
-  void OnVisitFunctionNode(FunctionNode& node) override {
+  void OnVisitObjectFunctionNameNode(ObjectFunctionNameNode& node) override {
+    if (!node.behaviorFunctionName.empty()) {
+      output +=
+          node.objectName + "." + node.objectFunctionOrBehaviorName + "::" + node.behaviorFunctionName;
+    } else {
+      output += node.objectName + "." + node.objectFunctionOrBehaviorName;
+    }
+  };
+  void OnVisitFunctionCallNode(FunctionCallNode& node) override {
     if (!node.behaviorName.empty()) {
       output +=
           node.objectName + "." + node.behaviorName + "::" + node.functionName;

Core/GDCore/Events/Parsers/ExpressionParser2NodeWorker.h

@@ -16,10 +16,11 @@ class TextNode;
 class VariableNode;
 class VariableAccessorNode;
 class VariableBracketAccessorNode;
-class IdentifierOrFunctionOrEmptyNode;
+class IdentifierOrFunctionCallOrObjectFunctionNameOrEmptyNode;
 class IdentifierNode;
-class FunctionOrEmptyNode;
-class FunctionNode;
+class FunctionCallOrObjectFunctionNameOrEmptyNode;
+class ObjectFunctionNameNode;
+class FunctionCallNode;
 class EmptyNode;
 }  // namespace gd
 
@@ -42,10 +43,11 @@ class GD_CORE_API ExpressionParser2NodeWorker {
   friend class VariableNode;
   friend class VariableAccessorNode;
   friend class VariableBracketAccessorNode;
-  friend class IdentifierOrFunctionOrEmptyNode;
+  friend class IdentifierOrFunctionCallOrObjectFunctionNameOrEmptyNode;
   friend class IdentifierNode;
-  friend class FunctionOrEmptyNode;
-  friend class FunctionNode;
+  friend class FunctionCallOrObjectFunctionNameOrEmptyNode;
+  friend class ObjectFunctionNameNode;
+  friend class FunctionCallNode;
   friend class EmptyNode;
 
  public:
@@ -62,10 +64,11 @@ class GD_CORE_API ExpressionParser2NodeWorker {
   virtual void OnVisitVariableBracketAccessorNode(
       VariableBracketAccessorNode& node) = 0;
   virtual void OnVisitIdentifierNode(IdentifierNode& node) = 0;
-  virtual void OnVisitFunctionNode(FunctionNode& node) = 0;
+  virtual void OnVisitObjectFunctionNameNode(ObjectFunctionNameNode& node) = 0;
+  virtual void OnVisitFunctionCallNode(FunctionCallNode& node) = 0;
   virtual void OnVisitEmptyNode(EmptyNode& node) = 0;
 };
 
 }  // namespace gd
 
-#endif
+#endif

Core/GDCore/Events/Parsers/VariableParser.cpp

@@ -1,141 +0,0 @@
-/*
- * GDevelop Core
- * Copyright 2008-2016 Florian Rival (Florian.Rival@gmail.com). All rights
- * reserved. This project is released under the MIT License.
- */
-#include "GDCore/Events/Parsers/VariableParser.h"
-#include <vector>
-#include "GDCore/String.h"
-namespace gd {
-class Layout;
-}
-namespace gd {
-class Project;
-}
-namespace gd {
-class Platform;
-}
-#include "GDCore/Tools/Localization.h"
-
-namespace gd {
-
-VariableParser::~VariableParser() {}
-
-bool VariableParser::Parse(VariableParserCallbacks& callbacks_) {
-  callbacks = &callbacks_;
-  rootVariableParsed = false;
-  firstErrorStr.clear();
-  firstErrorPos = 0;
-  currentPositionIt = expression.begin();
-  currentTokenType = TS_INVALID;
-  currentToken.clear();
-  S();
-
-  return firstErrorStr == "";
-}
-
-void VariableParser::ReadToken() {
-  currentTokenType = TS_INVALID;
-  currentToken.clear();
-  while (currentPositionIt != expression.end()) {
-    char32_t currentChar = *currentPositionIt;
-    if (currentChar == U'[' || currentChar == U']' || currentChar == U'.') {
-      if (currentTokenType == TS_VARNAME)
-        return;  // We've parsed a variable name.
-    }
-
-    if (currentChar == U'[') {
-      currentTokenType = TS_OPENING_BRACKET;
-      currentToken.clear();
-      ++currentPositionIt;
-      return;
-    } else if (currentChar == U']') {
-      currentTokenType = TS_CLOSING_BRACKET;
-      currentToken.clear();
-      ++currentPositionIt;
-      return;
-    } else if (currentChar == U'.') {
-      currentTokenType = TS_PERIOD;
-      currentToken.clear();
-      ++currentPositionIt;
-      return;
-    }
-
-    currentTokenType = TS_VARNAME;  // We're parsing a variable name.
-    currentToken.push_back(currentChar);
-    ++currentPositionIt;
-  }
-
-  // Can be reached if we are at the end of the expression. In this case,
-  // currentTokenType will be either TS_VARNAME or TS_INVALID.
-}
-
-void VariableParser::S() {
-  ReadToken();
-  if (currentTokenType != TS_VARNAME) {
-    firstErrorStr = _("Expecting a variable name.");
-    firstErrorPos = std::distance<gd::String::const_iterator>(
-        expression.begin(), currentPositionIt);
-    return;
-  }
-
-  if (!rootVariableParsed) {
-    rootVariableParsed = true;
-    if (callbacks) callbacks->OnRootVariable(currentToken);
-  } else if (callbacks)
-    callbacks->OnChildVariable(currentToken);
-
-  X();
-}
-
-void VariableParser::X() {
-  ReadToken();
-  if (currentTokenType == TS_INVALID)
-    return;  // Ended parsing.
-  else if (currentTokenType == TS_PERIOD)
-    S();
-  else if (currentTokenType == TS_OPENING_BRACKET) {
-    gd::String strExpr = SkipStringExpression();
-
-    ReadToken();
-    if (currentTokenType != TS_CLOSING_BRACKET) {
-      firstErrorStr = _("Expecting ]");
-      firstErrorPos = std::distance<gd::String::const_iterator>(
-          expression.begin(), currentPositionIt);
-      return;
-    }
-    if (callbacks) callbacks->OnChildSubscript(strExpr);
-    X();
-  }
-}
-
-gd::String VariableParser::SkipStringExpression() {
-  gd::String stringExpression;
-  bool insideStringLiteral = false;
-  bool lastCharacterWasBackslash = false;
-  unsigned int nestedBracket = 0;
-  while (currentPositionIt != expression.end()) {
-    char32_t currentChar = *currentPositionIt;
-    if (currentChar == U'\"') {
-      if (!insideStringLiteral)
-        insideStringLiteral = true;
-      else if (!lastCharacterWasBackslash)
-        insideStringLiteral = false;
-    } else if (currentChar == U'[' && !insideStringLiteral) {
-      nestedBracket++;
-    } else if (currentChar == U']' && !insideStringLiteral) {
-      if (nestedBracket == 0)
-        return stringExpression;  // Found the end of the string litteral.
-      nestedBracket--;
-    }
-
-    lastCharacterWasBackslash = currentChar == U'\\';
-    stringExpression.push_back(currentChar);
-    ++currentPositionIt;
-  }
-
-  // End of the expression reached (so expression is invalid by the way)
-  return stringExpression;
-}
-
-}  // namespace gd

Core/GDCore/Events/Parsers/VariableParser.h

@@ -1,148 +0,0 @@
-/*
- * GDevelop Core
- * Copyright 2008-2016 Florian Rival (Florian.Rival@gmail.com). All rights
- * reserved. This project is released under the MIT License.
- */
-#ifndef GDCORE_VARIABLEPARSER_H
-#define GDCORE_VARIABLEPARSER_H
-
-#include <vector>
-#include "GDCore/String.h"
-namespace gd {
-class Layout;
-}
-namespace gd {
-class Project;
-}
-namespace gd {
-class Platform;
-}
-namespace gd {
-class VariableParserCallbacks;
-}
-
-namespace gd {
-
-/** \brief Parse a variable expression.
- *
- * Parse an variable expression ( like
-myVariable.child["subchild"+ToString(i)].subsubchild ),
- * calling callbacks when a token is reached.
- *
- * Usage example:
-\code
-    //...
-
-    //VariableCodeGenerationCallbacks is a class inheriting from
-gd::VariableParserCallbacks VariableCodeGenerationCallbacks callbacks(output,
-*this, context, VariableCodeGenerationCallbacks::PROJECT_VARIABLE);
-
-    gd::VariableParser parser(parameter);
-    if ( !parser.Parse(callbacks) )
-        cout << "Error :" << parser.GetFirstError() << " in: "<< parameter <<
-endl;
-\endcode
- *
- * Here is the parsed grammar:   <br>
- * S -> VarName X  <br>
- * X -> e | . S | [StringExpression] X   <br>
- *
- * where e = nothing (end of expression), StringExpression = A valid string
-expression and
- * S is the start.
- *
- * \see gd::VariableParserCallbacks
- */
-class GD_CORE_API VariableParser {
- public:
-  /**
-   * \brief Default constructor
-   * \param expressionPlainString The string representing the expression to be
-   * parsed.
-   */
-  VariableParser(const gd::String& expressionPlainString_)
-      : currentPositionIt(), expression(expressionPlainString_){};
-  virtual ~VariableParser();
-
-  /**
-   * Parse the expression, calling each callback when necessary.
-   * \param callbacks The callbacks to be called.
-   * \return true if expression was correctly parsed.
-   * \see gd::VariableParserCallbacks
-   */
-  bool Parse(VariableParserCallbacks& callbacks);
-
-  /**
-   * \brief Return the description of the error that was found
-   */
-  const gd::String& GetFirstError() { return firstErrorStr; }
-
-  /**
-   * \brief Return the position of the error that was found
-   * \return The position, or gd::String::npos if no error is found
-   */
-  size_t GetFirstErrorPosition() { return firstErrorPos; }
-
-  gd::String firstErrorStr;
-  size_t firstErrorPos;
-
- private:
-  void S();
-  void X();
-
-  /**
-   * \brief Skip the string expression, starting from the current position.
-   * \return The string expression skipped. currentPosition is now put on the
-   * closing bracket.
-   */
-  gd::String SkipStringExpression();
-
-  void ReadToken();
-
-  enum TokenType {
-    TS_PERIOD,
-    TS_OPENING_BRACKET,
-    TS_CLOSING_BRACKET,
-    TS_VARNAME,
-    TS_INVALID
-  };
-
-  TokenType currentTokenType;
-  gd::String currentToken;
-  gd::String::const_iterator currentPositionIt;
-  gd::String expression;
-
-  VariableParserCallbacks* callbacks;
-  bool rootVariableParsed;
-};
-
-/**
- * \brief Callbacks called by VariableParser when parsing a variable expression.
- */
-class GD_CORE_API VariableParserCallbacks {
- public:
-  /**
-   * \brief Called when the first variable has been parsed. ( varName1 in
-   * varName1.child for example. ) \param variableName The variable name.
-   */
-  virtual void OnRootVariable(gd::String variableName) = 0;
-
-  /**
-   * \brief Called when accessing the child of a structure variable. ( child in
-   * varName1.child for example. ) \param variableName The child variable name.
-   */
-  virtual void OnChildVariable(gd::String variableName) = 0;
-
-  /**
-   * \brief Called when accessing the child of a structure variable using a
-   * string expression in square brackets. ( "subscript" in
-   * varName1["subscript"] for example. )
-   *
-   * \param variableName The expression used to access the child variable.
-   */
-  virtual void OnChildSubscript(gd::String stringExpression) = 0;
-};
-
-}  // namespace gd
-
-#endif  // GDEXPRESSIONPARSER_H

Core/GDCore/Events/Tools/EventsCodeNameMangler.cpp

@@ -8,10 +8,15 @@
 #include "GDCore/CommonTools.h"
 #include "GDCore/String.h"
 
-EventsCodeNameMangler *EventsCodeNameMangler::_singleton = NULL;
+EventsCodeNameMangler *EventsCodeNameMangler::_singleton = nullptr;
 
-gd::String EventsCodeNameMangler::GetMangledObjectsListName(
+const gd::String& EventsCodeNameMangler::GetMangledObjectsListName(
     const gd::String &originalObjectName) {
+  auto it = mangledObjectNames.find(originalObjectName);
+  if (it != mangledObjectNames.end()) {
+    return it->second;
+  }
+
   gd::String partiallyMangledName = originalObjectName;
   static const gd::String allowedCharacters =
       "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
@@ -27,11 +32,17 @@ gd::String EventsCodeNameMangler::GetMangledObjectsListName(
     }
   }
 
-  return "GD" + partiallyMangledName + "Objects";
+  mangledObjectNames[originalObjectName] = "GD" + partiallyMangledName + "Objects";
+  return mangledObjectNames[originalObjectName];
 }
 
-gd::String EventsCodeNameMangler::GetExternalEventsFunctionMangledName(
+const gd::String& EventsCodeNameMangler::GetExternalEventsFunctionMangledName(
     const gd::String &externalEventsName) {
+  auto it = mangledExternalEventsNames.find(externalEventsName);
+  if (it != mangledExternalEventsNames.end()) {
+    return it->second;
+  }
+
   gd::String partiallyMangledName = externalEventsName;
   static const gd::String allowedCharacters =
       "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
@@ -47,23 +58,24 @@ gd::String EventsCodeNameMangler::GetExternalEventsFunctionMangledName(
     }
   }
 
-  return "GDExternalEvents" + partiallyMangledName;
+  mangledExternalEventsNames[externalEventsName] = "GDExternalEvents" + partiallyMangledName;
+  return mangledExternalEventsNames[externalEventsName];
 }
 
-gd::String ManObjListName(const gd::String &objectName) {
+const gd::String& ManObjListName(const gd::String &objectName) {
   return EventsCodeNameMangler::Get()->GetMangledObjectsListName(objectName);
 }
 
 EventsCodeNameMangler *EventsCodeNameMangler::Get() {
-  if (NULL == _singleton) _singleton = new EventsCodeNameMangler;
+  if (nullptr == _singleton) _singleton = new EventsCodeNameMangler;
 
   return (static_cast<EventsCodeNameMangler *>(_singleton));
 }
 
 void EventsCodeNameMangler::DestroySingleton() {
-  if (NULL != _singleton) {
+  if (nullptr != _singleton) {
     delete _singleton;
-    _singleton = NULL;
+    _singleton = nullptr;
   }
 }
 

Core/GDCore/Events/Tools/EventsCodeNameMangler.h

@@ -6,26 +6,34 @@
 #if defined(GD_IDE_ONLY)
 #ifndef EVENTSCODENAMEMANGLER_H
 #define EVENTSCODENAMEMANGLER_H
+#include <unordered_map>
 #include "GDCore/String.h"
 
 /**
- * Manage name mangling, so as to ensure all names used in code are valid.
+ * \brief Mangle object names, so as to ensure all names used in code are valid.
  *
  * \see ManObjListName
  */
 class GD_CORE_API EventsCodeNameMangler {
  public:
   /**
-   * Get the mangled name from a name : All characters that are not 0-9, a-z,
+   * Get the mangled name from a name: All characters that are not 0-9, a-z,
    * A-Z or _ are replaced by "_"+AsciiCodeOfTheCharacter.
+   *
+   * The mangled name is memoized as this is intensively used during project
+   * export and events code generation.
    */
-  gd::String GetMangledObjectsListName(const gd::String &originalObjectName);
+  const gd::String &GetMangledObjectsListName(
+      const gd::String &originalObjectName);
 
   /**
    * Get the mangled function name to be used to call external events named \a
    * externalEventsName.
+   *
+   * The mangled name is memoized as this is intensively used during project
+   * export and events code generation.
    */
-  gd::String GetExternalEventsFunctionMangledName(
+  const gd::String &GetExternalEventsFunctionMangledName(
       const gd::String &externalEventsName);
 
   static EventsCodeNameMangler *Get();
@@ -35,14 +43,22 @@ class GD_CORE_API EventsCodeNameMangler {
   EventsCodeNameMangler(){};
   virtual ~EventsCodeNameMangler(){};
   static EventsCodeNameMangler *_singleton;
+
+  std::unordered_map<gd::String, gd::String>
+      mangledObjectNames;  ///< Memoized results of mangling for objects
+  std::unordered_map<gd::String, gd::String>
+      mangledExternalEventsNames;  ///< Memoized results of mangling for
+                                   /// external events
 };
 
 /**
- * Shortcut to
- * EventsCodeNameMangler::Get()->GetMangledObjectsListName(objectName). \see
- * EventsCodeNameMangler \return Mangled object name
+ * Shortcut for
+ * `EventsCodeNameMangler::Get()->GetMangledObjectsListName(objectName)`.
+ *
+ * \see EventsCodeNameMangler
+ * \return Mangled object name
  */
-gd::String GD_CORE_API ManObjListName(const gd::String &objectName);
+const gd::String &GD_CORE_API ManObjListName(const gd::String &objectName);
 
 #endif  // EVENTSCODENAMEMANGLER_H
 #endif

Core/GDCore/Extensions/Builtin/BaseObjectExtension.cpp

@@ -13,11 +13,12 @@ namespace gd {
 void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
     gd::PlatformExtension& extension) {
   extension
-      .SetExtensionInformation("BuiltinObject",
-                               _("Base object"),
-                               _("Base object"),
-                               "Florian Rival",
-                               "Open source (MIT License)")
+      .SetExtensionInformation(
+          "BuiltinObject",
+          _("Features for all objects"),
+          _("Common features that can be used for all objects in GDevelop."),
+          "Florian Rival",
+          "Open source (MIT License)")
       .SetExtensionHelpPath("/objects/base_object/events");
 
   gd::ObjectMetadata& obj = extension.AddObject<gd::Object>(
@@ -72,14 +73,14 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
       .UseStandardOperatorParameters("number")
       .MarkAsSimple();
 
-  obj.AddAction(
-         "MettreXY",
-         _("Position of an object"),
-         _("Change the position of an object."),
-         _("Change the position of _PARAM0_: _PARAM1_ _PARAM2_ (x axis), _PARAM3_ _PARAM4_ (y axis)"),
-         _("Position"),
-         "res/actions/position24.png",
-         "res/actions/position.png")
+  obj.AddAction("MettreXY",
+                _("Position of an object"),
+                _("Change the position of an object."),
+                _("Change the position of _PARAM0_: _PARAM1_ _PARAM2_ (x "
+                  "axis), _PARAM3_ _PARAM4_ (y axis)"),
+                _("Position"),
+                "res/actions/position24.png",
+                "res/actions/position.png")
 
       .AddParameter("object", _("Object"))
       .AddParameter("operator", _("Modification's sign"))
@@ -294,14 +295,13 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
       .AddParameter("objectvar", _("Variable"))
       .UseStandardOperatorParameters("number");
 
-  obj.AddAction(
-         "ModVarObjetTxt",
-         _("Modify the text of a variable of an object"),
-         _("Modify the text of a variable of an object"),
-         _("the text of variable _PARAM1_"),
-         _("Variables"),
-         "res/actions/var24.png",
-         "res/actions/var.png")
+  obj.AddAction("ModVarObjetTxt",
+                _("Modify the text of a variable of an object"),
+                _("Modify the text of a variable of an object"),
+                _("the text of variable _PARAM1_"),
+                _("Variables"),
+                "res/actions/var24.png",
+                "res/actions/var.png")
 
       .AddParameter("object", _("Object"))
       .AddParameter("objectvar", _("Variable"))
@@ -473,14 +473,13 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
       .AddParameter("objectvar", _("Variable"))
       .UseStandardRelationalOperatorParameters("number");
 
-  obj.AddCondition(
-         "VarObjetTxt",
-         _("Text of an object's variable"),
-         _("Compare the text of a variable of an object."),
-         _("the text of variable _PARAM1_"),
-         _("Variables"),
-         "res/conditions/var24.png",
-         "res/conditions/var.png")
+  obj.AddCondition("VarObjetTxt",
+                   _("Text of an object's variable"),
+                   _("Compare the text of a variable of an object."),
+                   _("the text of variable _PARAM1_"),
+                   _("Variables"),
+                   "res/conditions/var24.png",
+                   "res/conditions/var.png")
 
       .AddParameter("object", _("Object"))
       .AddParameter("objectvar", _("Variable"))
@@ -634,6 +633,23 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
       .AddParameter("expression", _("Y position of the point"))
       .MarkAsSimple();
 
+  extension
+      .AddCondition("SourisSurObjet",
+                    _("The cursor/touch is on an object"),
+                    _("Test if the cursor is over an object, or if the object "
+                      "is being touched."),
+                    _("The cursor/touch is on _PARAM0_"),
+                    _("Mouse and touch"),
+                    "res/conditions/surObjet24.png",
+                    "res/conditions/surObjet.png")
+
+      .AddParameter("objectList", _("Object"))
+      .AddCodeOnlyParameter("currentScene", "")
+      .AddParameter("yesorno", _("Accurate test (yes by default)"), "", true)
+      .SetDefaultValue("yes")
+      .AddCodeOnlyParameter("conditionInverted", "")
+      .MarkAsSimple();
+
   obj.AddCondition(
          "ObjectTimer",
          _("Value of a timer"),

Core/GDCore/Extensions/Builtin/CameraExtension.cpp

@@ -24,7 +24,7 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsCameraExtension(
       .AddCondition("CameraX",
                     _("Camera center X position"),
                     _("Compare the X position of the center of a camera."),
-                    _("the x position of camera _PARAM4_ (layer: _PARAM3_)"),
+                    _("the X position of camera _PARAM4_ (layer: _PARAM3_)"),
                     _("Layers and cameras"),
                     "res/conditions/camera24.png",
                     "res/conditions/camera.png")
@@ -57,7 +57,7 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsCameraExtension(
           "CameraX",
           _("Camera center X position"),
           _("Change the X position of the center of the specified camera."),
-          _("the x position of camera _PARAM4_ (layer: _PARAM3_)"),
+          _("the X position of camera _PARAM4_ (layer: _PARAM3_)"),
           _("Layers and cameras"),
           "res/conditions/camera24.png",
           "res/conditions/camera.png")
@@ -74,7 +74,7 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsCameraExtension(
           "CameraY",
           _("Camera center Y position"),
           _("Change the Y position of the center of the specified camera."),
-          _("the y position of camera _PARAM4_ (layer: _PARAM3_)"),
+          _("the Y position of camera _PARAM4_ (layer: _PARAM3_)"),
           _("Layers and cameras"),
           "res/conditions/camera24.png",
           "res/conditions/camera.png")

Core/GDCore/Extensions/Builtin/MouseExtension.cpp

@@ -21,23 +21,6 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsMouseExtension(
       .SetExtensionHelpPath("/all-features/mouse-touch");
 
 #if defined(GD_IDE_ONLY)
-  extension
-      .AddCondition("SourisSurObjet",
-                    _("The cursor/touch is on an object"),
-                    _("Test if the cursor is over an object, or if the object "
-                      "is being touched."),
-                    _("The cursor/touch is on _PARAM0_"),
-                    _("Mouse and touch"),
-                    "res/conditions/surObjet24.png",
-                    "res/conditions/surObjet.png")
-
-      .AddParameter("objectList", _("Object"))
-      .AddCodeOnlyParameter("currentScene", "")
-      .AddParameter("yesorno", _("Accurate test (yes by default)"), "", true)
-      .SetDefaultValue("yes")
-      .AddCodeOnlyParameter("conditionInverted", "")
-      .MarkAsSimple();
-
   extension
       .AddCondition(
           "IsMouseWheelScrollingUp",

Core/GDCore/Extensions/Builtin/SpriteExtension/SpriteExtension.cpp

@@ -380,7 +380,7 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsSpriteExtension(
   obj.AddAction("ChangeBlendMode",
                 _("Blend mode"),
                 _("Change the number of the blend mode of an object.\nThe "
-                  "default blend mode is 0 (Alpha)."),
+                  "default blend mode is 0 (Normal)."),
                 _("Change Blend mode of _PARAM0_ to _PARAM1_"),
                 _("Effects"),
                 "res/actions/color24.png",
@@ -388,7 +388,7 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsSpriteExtension(
 
       .AddParameter("object", _("Object"), "Sprite")
       .AddParameter("expression",
-                    _("Mode (0 : Alpha, 1 : Add, 2 : Multiply, 3 : None)"))
+                    _("Mode (0: Normal, 1: Add, 2: Multiply, 3: Screen)"))
       .MarkAsSimple();
 
   obj.AddAction("FlipX",

Core/GDCore/Extensions/Builtin/SpriteExtension/SpriteObject.cpp

@@ -107,8 +107,7 @@ void SpriteObject::DoSerializeTo(gd::SerializerElement& element) const {
   }
 }
 
-std::map<gd::String, gd::PropertyDescriptor> SpriteObject::GetProperties(
-    gd::Project& project) const {
+std::map<gd::String, gd::PropertyDescriptor> SpriteObject::GetProperties() const {
   std::map<gd::String, gd::PropertyDescriptor> properties;
   properties[_("Animate even if hidden or far from the screen")]
       .SetValue(updateIfNotVisible ? "true" : "false")
@@ -119,8 +118,7 @@ std::map<gd::String, gd::PropertyDescriptor> SpriteObject::GetProperties(
 }
 
 bool SpriteObject::UpdateProperty(const gd::String& name,
-                                  const gd::String& value,
-                                  gd::Project& project) {
+                                  const gd::String& value) {
   if (name == _("Animate even if hidden or far from the screen"))
     updateIfNotVisible = value == "1";
 

Core/GDCore/Extensions/Builtin/SpriteExtension/SpriteObject.h

@@ -48,11 +48,9 @@ class GD_CORE_API SpriteObject : public gd::Object {
 #if defined(GD_IDE_ONLY)
   void ExposeResources(gd::ArbitraryResourceWorker& worker) override;
 
-  std::map<gd::String, gd::PropertyDescriptor> GetProperties(
-      gd::Project& project) const override;
+  std::map<gd::String, gd::PropertyDescriptor> GetProperties() const override;
   bool UpdateProperty(const gd::String& name,
-                      const gd::String& value,
-                      gd::Project& project) override;
+                      const gd::String& value) override;
 
   std::map<gd::String, gd::PropertyDescriptor> GetInitialInstanceProperties(
       const gd::InitialInstance& position,

Core/GDCore/Extensions/Builtin/StringInstructionsExtension.cpp

@@ -119,6 +119,18 @@ BuiltinExtensionsImplementer::ImplementsStringInstructionsExtension(
                      _("Manipulation of text"),
                      "res/conditions/toujours24.png")
 
+      .AddParameter("string", _("Text"))
+      .AddParameter("string", _("Text to search for"))
+      .SetHidden(); // Deprecated, see StrFindLast instead.
+
+  extension
+      .AddExpression("StrFindLast",
+                     _("Search the last occurence in a text"),
+                     _("Search the last occurence in a string (return the position of "
+                       "the result, from the beginning of the string, or -1 if not found)"),
+                     _("Manipulation of text"),
+                     "res/conditions/toujours24.png")
+
       .AddParameter("string", _("Text"))
       .AddParameter("string", _("Text to search for"));
 
@@ -145,6 +157,22 @@ BuiltinExtensionsImplementer::ImplementsStringInstructionsExtension(
           _("Manipulation of text"),
           "res/conditions/toujours24.png")
 
+      .AddParameter("string", _("Text"))
+      .AddParameter("string", _("Text to search for"))
+      .AddParameter("expression",
+                    _("Position of the last character in the string to be "
+                      "considered in the search"))
+      .SetHidden(); // Deprecated, see StrFindLastFrom instead.
+
+  extension
+      .AddExpression(
+          "StrFindLastFrom",
+          _("Search the last occurence in a text, starting from a position"),
+          _("Search in a text the last occurence, starting from a position (return "
+            " the position of the result, from the beginning of the string, or -1 if not found)"),
+          _("Manipulation of text"),
+          "res/conditions/toujours24.png")
+
       .AddParameter("string", _("Text"))
       .AddParameter("string", _("Text to search for"))
       .AddParameter("expression",

Core/GDCore/Extensions/Builtin/TimeExtension.cpp

@@ -121,16 +121,16 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsTimeExtension(
 
   extension
       .AddExpression("TimeDelta",
-                     _("Time elapsed since the last image"),
-                     _("Time elapsed since the last image"),
+                     _("Time elapsed since the last frame"),
+                     _("Time elapsed since the last frame rendered on screen"),
                      _("Time"),
                      "res/actions/time.png")
       .AddCodeOnlyParameter("currentScene", "");
 
   extension
       .AddExpression("TempsFrame",
-                     _("Time elapsed since the last image"),
-                     _("Time elapsed since the last image"),
+                     _("Time elapsed since the last frame"),
+                     _("Time elapsed since the last frame rendered on screen"),
                      _("Time"),
                      "res/actions/time.png")
       .SetHidden()
@@ -138,8 +138,8 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsTimeExtension(
 
   extension
       .AddExpression("ElapsedTime",
-                     _("Time elapsed since the last image"),
-                     _("Time elapsed since the last image"),
+                     _("Time elapsed since the last frame"),
+                     _("Time elapsed since the last frame rendered on screen"),
                      _("Time"),
                      "res/actions/time.png")
       .SetHidden()

Core/GDCore/Extensions/Metadata/ParameterMetadataTools.cpp

@@ -90,7 +90,7 @@ size_t ParameterMetadataTools::GetObjectParameterIndexFor(
   // the object in the list of parameters (if possible, just after).
   // Search "lastObjectName" in the codebase for other place where this
   // convention is enforced.
-  for (std::size_t pNb = parameterIndex - 1; pNb < parametersMetadata.size();
+  for (std::size_t pNb = parameterIndex; pNb < parametersMetadata.size();
        pNb--) {
     if (gd::ParameterMetadata::IsObject(parametersMetadata[pNb].GetType())) {
       return pNb;

Core/GDCore/Extensions/Platform.cpp

@@ -14,19 +14,19 @@ using namespace std;
 
 namespace gd {
 
-Platform::Platform() {}
+Platform::Platform(): enableExtensionLoadingLogs(true) {}
 
 Platform::~Platform() {}
 
 bool Platform::AddExtension(std::shared_ptr<gd::PlatformExtension> extension) {
   if (!extension) return false;
 
-  std::cout << "Loading " << extension->GetName() << "...";
+  if (enableExtensionLoadingLogs) std::cout << "Loading " << extension->GetName() << "...";
   if (IsExtensionLoaded(extension->GetName())) {
-    std::cout << " (replacing existing extension)";
+    if (enableExtensionLoadingLogs) std::cout << " (replacing existing extension)";
     RemoveExtension(extension->GetName());
   }
-  std::cout << std::endl;
+  if (enableExtensionLoadingLogs) std::cout << std::endl;
 
   extensionsLoaded.push_back(extension);
 

Core/GDCore/Extensions/Platform.h

@@ -156,6 +156,12 @@ class GD_CORE_API Platform {
 
   ///@}
 
+  /**
+   * \brief Activate or disable the logs on the standard output when
+   * loading an extension.
+   */
+  void EnableExtensionLoadingLogs(bool enable) { enableExtensionLoadingLogs = enable; };
+
   /**
    * \brief Called when the IDE is about to shut down: Take this opportunity for
    * erasing for example any temporary file.
@@ -174,6 +180,7 @@ class GD_CORE_API Platform {
       extensionsLoaded;  ///< Extensions of the platform
   std::map<gd::String, CreateFunPtr>
       creationFunctionTable;  ///< Creation functions for objects
+  bool enableExtensionLoadingLogs;
 };
 
 }  // namespace gd

Core/GDCore/IDE/Events/EventsContextAnalyzer.cpp

@@ -63,7 +63,16 @@ class GD_CORE_API ExpressionObjectsAnalyzer
       context.AddObjectName(node.identifierName);
     }
   }
-  void OnVisitFunctionNode(FunctionNode& node) override {
+  void OnVisitObjectFunctionNameNode(ObjectFunctionNameNode& node) override {
+    if (!node.objectName.empty()) {
+      context.AddObjectName(node.objectName);
+
+      if (!node.behaviorFunctionName.empty()) {
+        context.AddBehaviorName(node.objectName, node.objectFunctionOrBehaviorName);
+      }
+    }
+  }
+  void OnVisitFunctionCallNode(FunctionCallNode& node) override {
     if (!node.objectName.empty()) {
       context.AddObjectName(node.objectName);
 

Core/GDCore/IDE/Events/EventsRefactorer.cpp

@@ -35,7 +35,7 @@ class GD_CORE_API ExpressionObjectRenamer : public ExpressionParser2NodeWorker {
   virtual ~ExpressionObjectRenamer(){};
 
   static bool Rename(gd::ExpressionNode & node, const gd::String& objectName, const gd::String& objectNewName) {
-    if (ExpressionValidator::HasNoErrors(node)) {  
+    if (ExpressionValidator::HasNoErrors(node)) {
       ExpressionObjectRenamer renamer(objectName, objectNewName);
       node.Visit(renamer);
 
@@ -77,7 +77,13 @@ class GD_CORE_API ExpressionObjectRenamer : public ExpressionParser2NodeWorker {
       node.identifierName = objectNewName;
     }
   }
-  void OnVisitFunctionNode(FunctionNode& node) override {
+  void OnVisitObjectFunctionNameNode(ObjectFunctionNameNode& node) override {
+    if (node.objectName == objectName) {
+      hasDoneRenaming = true;
+      node.objectName = objectNewName;
+    }
+  }
+  void OnVisitFunctionCallNode(FunctionCallNode& node) override {
     if (node.objectName == objectName) {
       hasDoneRenaming = true;
       node.objectName = objectNewName;
@@ -107,7 +113,7 @@ class GD_CORE_API ExpressionObjectFinder : public ExpressionParser2NodeWorker {
   virtual ~ExpressionObjectFinder(){};
 
   static bool CheckIfHasObject(gd::ExpressionNode & node, const gd::String & objectName) {
-    if (ExpressionValidator::HasNoErrors(node)) {  
+    if (ExpressionValidator::HasNoErrors(node)) {
       ExpressionObjectFinder finder(objectName);
       node.Visit(finder);
 
@@ -148,7 +154,12 @@ class GD_CORE_API ExpressionObjectFinder : public ExpressionParser2NodeWorker {
       hasObject = true;
     }
   }
-  void OnVisitFunctionNode(FunctionNode& node) override {
+  void OnVisitObjectFunctionNameNode(ObjectFunctionNameNode& node) override {
+    if (node.objectName == objectName) {
+      hasObject = true;
+    }
+  }
+  void OnVisitFunctionCallNode(FunctionCallNode& node) override {
     if (node.objectName == objectName) {
       hasObject = true;
     }
@@ -184,7 +195,7 @@ bool EventsRefactorer::RenameObjectInActions(const gd::Platform& platform,
                    "number", instrInfos.parameters[pNb].type)) {
         gd::ExpressionParser2 parser(platform, project, layout);
         auto node = parser.ParseExpression("number", actions[aId].GetParameter(pNb).GetPlainString());
-        
+
         if (ExpressionObjectRenamer::Rename(*node, oldName, newName)) {
           actions[aId].SetParameter(pNb, ExpressionParser2NodePrinter::PrintNode(*node));
         }
@@ -194,7 +205,7 @@ bool EventsRefactorer::RenameObjectInActions(const gd::Platform& platform,
                    "string", instrInfos.parameters[pNb].type)) {
         gd::ExpressionParser2 parser(platform, project, layout);
         auto node = parser.ParseExpression("string", actions[aId].GetParameter(pNb).GetPlainString());
-        
+
         if (ExpressionObjectRenamer::Rename(*node, oldName, newName)) {
           actions[aId].SetParameter(pNb, ExpressionParser2NodePrinter::PrintNode(*node));
         }
@@ -237,7 +248,7 @@ bool EventsRefactorer::RenameObjectInConditions(
                    "number", instrInfos.parameters[pNb].type)) {
         gd::ExpressionParser2 parser(platform, project, layout);
         auto node = parser.ParseExpression("number", conditions[cId].GetParameter(pNb).GetPlainString());
-        
+
         if (ExpressionObjectRenamer::Rename(*node, oldName, newName)) {
           conditions[cId].SetParameter(pNb, ExpressionParser2NodePrinter::PrintNode(*node));
         }
@@ -247,7 +258,7 @@ bool EventsRefactorer::RenameObjectInConditions(
                    "string", instrInfos.parameters[pNb].type)) {
         gd::ExpressionParser2 parser(platform, project, layout);
         auto node = parser.ParseExpression("string", conditions[cId].GetParameter(pNb).GetPlainString());
-        
+
         if (ExpressionObjectRenamer::Rename(*node, oldName, newName)) {
           conditions[cId].SetParameter(pNb, ExpressionParser2NodePrinter::PrintNode(*node));
         }
@@ -268,6 +279,43 @@ bool EventsRefactorer::RenameObjectInConditions(
   return somethingModified;
 }
 
+bool EventsRefactorer::RenameObjectInEventParameters(
+    const gd::Platform& platform,
+    gd::ObjectsContainer& project,
+    gd::ObjectsContainer& layout,
+    gd::Expression& expression,
+    gd::ParameterMetadata parameterMetadata,
+    gd::String oldName,
+    gd::String newName) {
+  bool somethingModified = false;
+
+  if (gd::ParameterMetadata::IsObject(parameterMetadata.GetType()) &&
+      expression.GetPlainString() == oldName)
+    expression = gd::Expression(newName);
+  // Replace object's name in expressions
+  else if (ParameterMetadata::IsExpression(
+               "number", parameterMetadata.GetType())) {
+    gd::ExpressionParser2 parser(platform, project, layout);
+    auto node = parser.ParseExpression("number", expression.GetPlainString());
+
+    if (ExpressionObjectRenamer::Rename(*node, oldName, newName)) {
+      expression = ExpressionParser2NodePrinter::PrintNode(*node);
+    }
+  }
+  // Replace object's name in text expressions
+  else if (ParameterMetadata::IsExpression(
+               "string", parameterMetadata.GetType())) {
+    gd::ExpressionParser2 parser(platform, project, layout);
+    auto node = parser.ParseExpression("string", expression.GetPlainString());
+
+    if (ExpressionObjectRenamer::Rename(*node, oldName, newName)) {
+      expression = ExpressionParser2NodePrinter::PrintNode(*node);
+    }
+  }
+
+  return somethingModified;
+}
+
 void EventsRefactorer::RenameObjectInEvents(const gd::Platform& platform,
                                             gd::ObjectsContainer& project,
                                             gd::ObjectsContainer& layout,
@@ -289,6 +337,15 @@ void EventsRefactorer::RenameObjectInEvents(const gd::Platform& platform,
           platform, project, layout, *actionsVectors[j], oldName, newName);
     }
 
+    vector<pair<gd::Expression*, gd::ParameterMetadata>> expressionsWithMetadata =
+        events[i].GetAllExpressionsWithMetadata();
+    for (std::size_t j = 0; j < expressionsWithMetadata.size(); ++j) {
+      gd::Expression* expression = expressionsWithMetadata[j].first;
+      gd::ParameterMetadata parameterMetadata = expressionsWithMetadata[j].second;
+      bool somethingModified = RenameObjectInEventParameters(
+        platform, project, layout, *expression, parameterMetadata, oldName, newName);
+    }
+
     if (events[i].CanHaveSubEvents())
       RenameObjectInEvents(platform,
                            project,
@@ -323,7 +380,7 @@ bool EventsRefactorer::RemoveObjectInActions(const gd::Platform& platform,
                    "number", instrInfos.parameters[pNb].type)) {
         gd::ExpressionParser2 parser(platform, project, layout);
         auto node = parser.ParseExpression("number", actions[aId].GetParameter(pNb).GetPlainString());
-        
+
         if (ExpressionObjectFinder::CheckIfHasObject(*node, name)) {
           deleteMe = true;
           break;
@@ -334,7 +391,7 @@ bool EventsRefactorer::RemoveObjectInActions(const gd::Platform& platform,
                    "string", instrInfos.parameters[pNb].type)) {
         gd::ExpressionParser2 parser(platform, project, layout);
         auto node = parser.ParseExpression("string", actions[aId].GetParameter(pNb).GetPlainString());
-        
+
         if (ExpressionObjectFinder::CheckIfHasObject(*node, name)) {
           deleteMe = true;
           break;
@@ -384,7 +441,7 @@ bool EventsRefactorer::RemoveObjectInConditions(
                    "number", instrInfos.parameters[pNb].type)) {
         gd::ExpressionParser2 parser(platform, project, layout);
         auto node = parser.ParseExpression("number", conditions[cId].GetParameter(pNb).GetPlainString());
-        
+
         if (ExpressionObjectFinder::CheckIfHasObject(*node, name)) {
           deleteMe = true;
           break;
@@ -395,7 +452,7 @@ bool EventsRefactorer::RemoveObjectInConditions(
                    "string", instrInfos.parameters[pNb].type)) {
         gd::ExpressionParser2 parser(platform, project, layout);
         auto node = parser.ParseExpression("string", conditions[cId].GetParameter(pNb).GetPlainString());
-        
+
         if (ExpressionObjectFinder::CheckIfHasObject(*node, name)) {
           deleteMe = true;
           break;
@@ -595,7 +652,8 @@ vector<EventsSearchResult> EventsRefactorer::SearchInEvents(
     gd::String search,
     bool matchCase,
     bool inConditions,
-    bool inActions) {
+    bool inActions,
+    bool inEventStrings) {
   vector<EventsSearchResult> results;
 
   for (std::size_t i = 0; i < events.size(); ++i) {
@@ -631,6 +689,16 @@ vector<EventsSearchResult> EventsRefactorer::SearchInEvents(
       }
     }
 
+    if (inEventStrings) {
+      if (!eventAddedInResults &&
+          SearchStringInEvent(project, layout, events[i], search, matchCase)) {
+        results.push_back(EventsSearchResult(
+            std::weak_ptr<gd::BaseEvent>(events.GetEventSmartPtr(i)),
+            &events,
+            i));
+      }
+    }
+
     if (events[i].CanHaveSubEvents()) {
       vector<EventsSearchResult> subResults =
           SearchInEvents(project,
@@ -639,7 +707,8 @@ vector<EventsSearchResult> EventsRefactorer::SearchInEvents(
                          search,
                          matchCase,
                          inConditions,
-                         inActions);
+                         inActions,
+                         inEventStrings);
       std::copy(
           subResults.begin(), subResults.end(), std::back_inserter(results));
     }
@@ -711,6 +780,22 @@ bool EventsRefactorer::SearchStringInConditions(
   return false;
 }
 
+bool EventsRefactorer::SearchStringInEvent(gd::ObjectsContainer& project,
+                                            gd::ObjectsContainer& layout,
+                                            gd::BaseEvent& event,
+                                            gd::String search,
+                                            bool matchCase) {
+  for (gd::String str : event.GetAllSearchableStrings()) {
+    if (matchCase) {
+      if (str.find(search) != gd::String::npos) return true;
+    } else {
+      if (str.FindCaseInsensitive(search) != gd::String::npos) return true;
+    }
+  }
+
+  return false;
+}
+
 EventsSearchResult::EventsSearchResult(std::weak_ptr<gd::BaseEvent> event_,
                                        gd::EventsList* eventsList_,
                                        std::size_t positionInList_)

Core/GDCore/IDE/Events/EventsRefactorer.h

@@ -8,6 +8,7 @@
 #include <memory>
 #include <vector>
 #include "GDCore/Events/Instruction.h"
+#include "GDCore/Extensions/Metadata/InstructionMetadata.h"
 #include "GDCore/String.h"
 namespace gd {
 class EventsList;
@@ -103,7 +104,8 @@ class GD_CORE_API EventsRefactorer {
                                                         gd::String search,
                                                         bool matchCase,
                                                         bool inConditions,
-                                                        bool inAction);
+                                                        bool inActions,
+                                                        bool inEventStrings);
 
   /**
    * Replace all occurrences of a gd::String in events
@@ -145,6 +147,20 @@ class GD_CORE_API EventsRefactorer {
                                        gd::InstructionsList& instructions,
                                        gd::String oldName,
                                        gd::String newName);
+   /**
+   * Replace all occurrences of an object name by another name in an expression
+   * with the specified metadata
+   * ( include : objects or objects in math/text expressions ).
+   *
+   * \return true if something was modified.
+   */
+  static bool RenameObjectInEventParameters(const gd::Platform& platform,
+                                            gd::ObjectsContainer& project,
+                                            gd::ObjectsContainer& layout,
+                                            gd::Expression& expression,
+                                            gd::ParameterMetadata parameterMetadata,
+                                            gd::String oldName,
+                                            gd::String newName);
 
   /**
    * Remove all conditions of the list using an object
@@ -202,6 +218,11 @@ class GD_CORE_API EventsRefactorer {
                                        gd::InstructionsList& conditions,
                                        gd::String search,
                                        bool matchCase);
+  static bool SearchStringInEvent(gd::ObjectsContainer& project,
+                                       gd::ObjectsContainer& layout,
+                                       gd::BaseEvent& events,
+                                       gd::String search,
+                                       bool matchCase);
 
   EventsRefactorer(){};
 };

Core/GDCore/IDE/Events/EventsVariablesFinder.cpp

@@ -63,7 +63,8 @@ class GD_CORE_API ExpressionParameterSearcher
     if (node.child) node.child->Visit(*this);
   }
   void OnVisitIdentifierNode(IdentifierNode& node) override {}
-  void OnVisitFunctionNode(FunctionNode& node) override {
+  void OnVisitObjectFunctionNameNode(ObjectFunctionNameNode& node) override {}
+  void OnVisitFunctionCallNode(FunctionCallNode& node) override {
     bool considerFunction = objectName.empty() || node.objectName == objectName;
     for (size_t i = 0; i < node.parameters.size() &&
                        i < node.expressionMetadata.parameters.size();

Core/GDCore/IDE/Events/ExpressionCompletionFinder.h

@@ -0,0 +1,366 @@
+/*
+ * GDevelop Core
+ * Copyright 2008-present Florian Rival (Florian.Rival@gmail.com). All rights
+ * reserved. This project is released under the MIT License.
+ */
+#ifndef GDCORE_EXPRESSIONAUTOCOMPLETIONPROVIDER_H
+#define GDCORE_EXPRESSIONAUTOCOMPLETIONPROVIDER_H
+
+#include <memory>
+#include <vector>
+#include "GDCore/Events/Parsers/ExpressionParser2Node.h"
+#include "GDCore/Events/Parsers/ExpressionParser2NodeWorker.h"
+#include "GDCore/Extensions/Metadata/InstructionMetadata.h"
+#include "GDCore/IDE/Events/ExpressionNodeLocationFinder.h"
+namespace gd {
+class Expression;
+class ObjectsContainer;
+class Platform;
+class ParameterMetadata;
+class ExpressionMetadata;
+}  // namespace gd
+
+namespace gd {
+
+/**
+ * \brief Describe completions to be shown to the user.
+ *
+ * The IDE is responsible for actually *searching* and showing the completions -
+ * this is only describing what must be listed.
+ */
+struct ExpressionCompletionDescription {
+ public:
+  /**
+   * The different kind of completions that can be described.
+   */
+  enum CompletionKind {
+    Object,
+    Behavior,
+    Expression,
+    Variable,
+  };
+
+  /**
+   * \brief Create a completion for an object with the given prefix
+   */
+  static ExpressionCompletionDescription ForObject(const gd::String& type_,
+                                                   const gd::String& prefix_) {
+    return ExpressionCompletionDescription(Object, type_, prefix_);
+  }
+
+  /**
+   * \brief Create a completion for a behavior with the given prefix of
+   * the specified object
+   */
+  static ExpressionCompletionDescription ForBehavior(
+      const gd::String& prefix_, const gd::String& objectName_) {
+    return ExpressionCompletionDescription(Behavior, "", prefix_, objectName_);
+  }
+
+  /**
+   * \brief Create a completion for a variable with the given prefix
+   */
+  static ExpressionCompletionDescription ForVariable(
+      const gd::String& type_, const gd::String& prefix_) {
+    return ExpressionCompletionDescription(Variable, type_, prefix_);
+  }
+  /**
+   * \brief Create a completion for an expression (free, object or behavior
+   * expression) with the given prefix
+   */
+  static ExpressionCompletionDescription ForExpression(
+      const gd::String& type_,
+      const gd::String& prefix_,
+      const gd::String& objectName_ = "",
+      const gd::String& behaviorName_ = "") {
+    return ExpressionCompletionDescription(
+        Expression, type_, prefix_, objectName_, behaviorName_);
+  }
+
+  /** Check if two description of completions are equal */
+  bool operator==(const ExpressionCompletionDescription& other) const {
+    return completionKind == other.completionKind && type == other.type &&
+           prefix == other.prefix && objectName == other.objectName &&
+           behaviorName == other.behaviorName;
+  };
+
+  /** \brief Return the kind of the completion */
+  CompletionKind GetCompletionKind() const { return completionKind; }
+
+  /**
+   * \brief Return the type of the completion (same type as types supported in
+   * expressions)
+   * (in other words, for expression this is the type of what must be returned).
+   */
+  const gd::String& GetType() const { return type; }
+
+  /**
+   * \brief Return the prefix currently entered and that must be completed.
+   */
+  const gd::String& GetPrefix() const { return prefix; }
+
+  /**
+   * \brief Return the object name, if completing an object expression or a
+   * behavior.
+   */
+  const gd::String& GetObjectName() const { return objectName; }
+
+  /**
+   * \brief Return the behavior name, if completing an object behavior
+   * expression.
+   *
+   * \warning If completing a behavior, the behavior (partial) name is returned
+   * by `GetPrefix`.
+   */
+  const gd::String& GetBehaviorName() const { return behaviorName; }
+
+  /**
+   * \brief Set if the completion description is exact, i.e: it's not used
+   * to complete anything. Rather, it should display information about what is
+   * described by the completion.
+   */
+  ExpressionCompletionDescription& SetIsExact(bool isExact_) {
+    isExact = isExact_;
+    return *this;
+  }
+
+  /**
+   * \brief Check if the completion description is exact, i.e: it's not
+   * used to complete anything. Rather, it should display information
+   * about what is described by the completion.
+   */
+  bool IsExact() const { return isExact; }
+
+  /** Default constructor, only to be used by Emscripten bindings. */
+  ExpressionCompletionDescription() : completionKind(Object){};
+
+ private:
+  ExpressionCompletionDescription(CompletionKind completionKind_,
+                                  const gd::String& type_,
+                                  const gd::String& prefix_,
+                                  const gd::String& objectName_ = "",
+                                  const gd::String& behaviorName_ = "")
+      : completionKind(completionKind_),
+        type(type_),
+        prefix(prefix_),
+        objectName(objectName_),
+        behaviorName(behaviorName_),
+        isExact(false) {}
+
+  CompletionKind completionKind;
+  gd::String type;
+  gd::String prefix;
+  gd::String objectName;
+  gd::String behaviorName;
+  bool isExact;
+};
+
+/**
+ * \brief Turn an ExpressionCompletionDescription to a string.
+ */
+std::ostream& operator<<(std::ostream& os,
+                         ExpressionCompletionDescription const& value) {
+  os << "{ " << value.GetCompletionKind() << ", " << value.GetType() << ", "
+     << value.GetPrefix() << ", " << value.GetObjectName() << ", "
+     << value.GetBehaviorName() << ", "
+     << (value.IsExact() ? "exact" : "non-exact") << " }";
+  return os;
+}
+
+/**
+ * \brief Returns the list of completion descriptions for an expression node.
+ *
+ * \see gd::ExpressionCompletionDescription
+ */
+class GD_CORE_API ExpressionCompletionFinder
+    : public ExpressionParser2NodeWorker {
+ public:
+  /**
+   * \brief Given the expression, find the node at the specified location
+   * and returns completions for it.
+   */
+  static std::vector<ExpressionCompletionDescription>
+  GetCompletionDescriptionsFor(gd::ExpressionNode& node,
+                               size_t searchedPosition) {
+    gd::ExpressionNode* nodeAtLocation =
+        gd::ExpressionNodeLocationFinder::GetNodeAtPosition(node,
+                                                            searchedPosition);
+
+    if (nodeAtLocation == nullptr) {
+      std::vector<ExpressionCompletionDescription> emptyCompletions;
+      return emptyCompletions;
+    }
+
+    gd::ExpressionCompletionFinder autocompletionProvider(searchedPosition);
+    nodeAtLocation->Visit(autocompletionProvider);
+    return autocompletionProvider.GetCompletionDescriptions();
+  }
+
+  /**
+   * \brief Return the completions found for the visited node.
+   */
+  const std::vector<ExpressionCompletionDescription>&
+  GetCompletionDescriptions() {
+    return completions;
+  };
+
+  virtual ~ExpressionCompletionFinder(){};
+
+ protected:
+  void OnVisitSubExpressionNode(SubExpressionNode& node) override {
+    completions.push_back(
+        ExpressionCompletionDescription::ForObject(node.type, ""));
+    completions.push_back(
+        ExpressionCompletionDescription::ForExpression(node.type, ""));
+  }
+  void OnVisitOperatorNode(OperatorNode& node) override {
+    completions.push_back(
+        ExpressionCompletionDescription::ForObject(node.type, ""));
+    completions.push_back(
+        ExpressionCompletionDescription::ForExpression(node.type, ""));
+  }
+  void OnVisitUnaryOperatorNode(UnaryOperatorNode& node) override {
+    completions.push_back(
+        ExpressionCompletionDescription::ForObject(node.type, ""));
+    completions.push_back(
+        ExpressionCompletionDescription::ForExpression(node.type, ""));
+  }
+  void OnVisitNumberNode(NumberNode& node) override {
+    // No completions
+  }
+  void OnVisitTextNode(TextNode& node) override {
+    // No completions
+  }
+  void OnVisitVariableNode(VariableNode& node) override {
+    completions.push_back(
+        ExpressionCompletionDescription::ForVariable(node.type, node.name));
+  }
+  void OnVisitVariableAccessorNode(VariableAccessorNode& node) override {
+    // No completions
+  }
+  void OnVisitVariableBracketAccessorNode(
+      VariableBracketAccessorNode& node) override {
+    // No completions
+  }
+  void OnVisitIdentifierNode(IdentifierNode& node) override {
+    if (gd::ParameterMetadata::IsObject(node.type)) {
+      // Only show completions of objects if an object is required
+      completions.push_back(ExpressionCompletionDescription::ForObject(
+          node.type, node.identifierName));
+    } else {
+      // Show completions for expressions and objects otherwise.
+      completions.push_back(ExpressionCompletionDescription::ForObject(
+          node.type, node.identifierName));
+      completions.push_back(ExpressionCompletionDescription::ForExpression(
+          node.type, node.identifierName));
+    }
+  }
+  void OnVisitObjectFunctionNameNode(ObjectFunctionNameNode& node) override {
+    if (!node.behaviorFunctionName.empty() ||
+        node.behaviorNameNamespaceSeparatorLocation.IsValid()) {
+      // Behavior function (or behavior function being written, with the
+      // function name missing)
+      if (IsCaretOn(node.objectNameLocation)) {
+        completions.push_back(ExpressionCompletionDescription::ForObject(
+            node.type, node.objectName));
+      } else if (IsCaretOn(node.objectNameDotLocation) ||
+                 IsCaretOn(node.objectFunctionOrBehaviorNameLocation)) {
+        completions.push_back(ExpressionCompletionDescription::ForBehavior(
+            node.objectFunctionOrBehaviorName, node.objectName));
+      } else if (IsCaretOn(node.behaviorNameNamespaceSeparatorLocation) ||
+                 IsCaretOn(node.behaviorFunctionNameLocation)) {
+        completions.push_back(ExpressionCompletionDescription::ForExpression(
+            node.type,
+            node.behaviorFunctionName,
+            node.objectName,
+            node.objectFunctionOrBehaviorName));
+      }
+    } else {
+      // Object function or behavior name
+      if (IsCaretOn(node.objectNameLocation)) {
+        completions.push_back(ExpressionCompletionDescription::ForObject(
+            node.type, node.objectName));
+      } else if (IsCaretOn(node.objectNameDotLocation) ||
+                 IsCaretOn(node.objectFunctionOrBehaviorNameLocation)) {
+        completions.push_back(ExpressionCompletionDescription::ForBehavior(
+            node.objectFunctionOrBehaviorName, node.objectName));
+        completions.push_back(ExpressionCompletionDescription::ForExpression(
+            node.type, node.objectFunctionOrBehaviorName, node.objectName));
+      }
+    }
+  }
+  void OnVisitFunctionCallNode(FunctionCallNode& node) override {
+    bool isCaretOnParenthesis = IsCaretOn(node.openingParenthesisLocation) ||
+                                IsCaretOn(node.closingParenthesisLocation);
+
+    if (!node.behaviorName.empty()) {
+      // Behavior function
+      if (IsCaretOn(node.objectNameLocation)) {
+        completions.push_back(ExpressionCompletionDescription::ForObject(
+            node.type, node.objectName));
+      } else if (IsCaretOn(node.objectNameDotLocation) ||
+                 IsCaretOn(node.behaviorNameLocation)) {
+        completions.push_back(ExpressionCompletionDescription::ForBehavior(
+            node.behaviorName, node.objectName));
+      } else {
+        completions.push_back(
+            ExpressionCompletionDescription::ForExpression(node.type,
+                                                           node.functionName,
+                                                           node.objectName,
+                                                           node.behaviorName)
+                .SetIsExact(isCaretOnParenthesis));
+      }
+    } else if (!node.objectName.empty()) {
+      // Object function
+      if (IsCaretOn(node.objectNameLocation)) {
+        completions.push_back(ExpressionCompletionDescription::ForObject(
+            node.type, node.objectName));
+      } else {
+        // Add completions for behaviors, because we could imagine that the user
+        // wants to move from an object function to a behavior function, and so
+        // need behavior completions. Do this unless we're on the parenthesis
+        // (at which point we're only showing informative message about the
+        // function).
+        if (!isCaretOnParenthesis) {
+          completions.push_back(ExpressionCompletionDescription::ForBehavior(
+              node.functionName, node.objectName));
+        }
+
+        completions.push_back(ExpressionCompletionDescription::ForExpression(
+                                  node.type, node.functionName, node.objectName)
+                                  .SetIsExact(isCaretOnParenthesis));
+      }
+    } else {
+      // Free function
+      completions.push_back(ExpressionCompletionDescription::ForExpression(
+                                node.type, node.functionName)
+                                .SetIsExact(isCaretOnParenthesis));
+    }
+  }
+  void OnVisitEmptyNode(EmptyNode& node) override {
+    completions.push_back(
+        ExpressionCompletionDescription::ForObject(node.type, node.text));
+    completions.push_back(
+        ExpressionCompletionDescription::ForExpression(node.type, node.text));
+  }
+
+ private:
+  bool IsCaretOn(const ExpressionParserLocation& location,
+                 bool inclusive = false) {
+    if (!location.IsValid()) return false;
+
+    return (location.GetStartPosition() <= searchedPosition &&
+            ((!inclusive && searchedPosition < location.GetEndPosition()) ||
+             (inclusive && searchedPosition <= location.GetEndPosition())));
+  }
+
+  ExpressionCompletionFinder(size_t searchedPosition_)
+      : searchedPosition(searchedPosition_){};
+
+  std::vector<ExpressionCompletionDescription> completions;
+  size_t searchedPosition;
+};
+
+}  // namespace gd
+
+#endif  // GDCORE_EXPRESSIONAUTOCOMPLETIONPROVIDER_H

Core/GDCore/IDE/Events/ExpressionNodeLocationFinder.h

@@ -0,0 +1,126 @@
+/*
+ * GDevelop Core
+ * Copyright 2008-present Florian Rival (Florian.Rival@gmail.com). All rights
+ * reserved. This project is released under the MIT License.
+ */
+#ifndef GDCORE_EXPRESSIONNODELOCATIONFINDER_H
+#define GDCORE_EXPRESSIONNODELOCATIONFINDER_H
+
+#include <memory>
+#include <vector>
+#include "GDCore/Events/Parsers/ExpressionParser2Node.h"
+#include "GDCore/Events/Parsers/ExpressionParser2NodeWorker.h"
+namespace gd {
+class Expression;
+class ObjectsContainer;
+class Platform;
+class ParameterMetadata;
+class ExpressionMetadata;
+}  // namespace gd
+
+namespace gd {
+
+/**
+ * \brief Find the deepest node at the specified location in an expression.
+ *
+ * \see gd::ExpressionParser2
+ */
+class GD_CORE_API ExpressionNodeLocationFinder
+    : public ExpressionParser2NodeWorker {
+ public:
+  /**
+   * \brief Initialize the finder to search at the specified position.
+   */
+  ExpressionNodeLocationFinder(size_t searchedPosition_)
+      : searchedPosition(searchedPosition_), foundNode(nullptr){};
+  virtual ~ExpressionNodeLocationFinder(){};
+
+  /**
+   * \brief Helper function to find the deepest node at the search position, if
+   * any.
+   */
+  static ExpressionNode* GetNodeAtPosition(gd::ExpressionNode& node,
+                                           size_t searchedPosition) {
+    gd::ExpressionNodeLocationFinder finder(searchedPosition);
+    node.Visit(finder);
+    return finder.GetNode();
+  }
+
+  /**
+   * \brief Return the deepest node found at the search position, if any.
+   */
+  ExpressionNode* GetNode() { return foundNode; };
+
+ protected:
+  void OnVisitSubExpressionNode(SubExpressionNode& node) override {
+    CheckSearchPositionInNode(node);
+    node.expression->Visit(*this);
+  }
+  void OnVisitOperatorNode(OperatorNode& node) override {
+    if (CheckSearchPositionInNode(node)) {
+      node.leftHandSide->Visit(*this);
+      node.rightHandSide->Visit(*this);
+    }
+  }
+  void OnVisitUnaryOperatorNode(UnaryOperatorNode& node) override {
+    CheckSearchPositionInNode(node);
+    node.factor->Visit(*this);
+  }
+  void OnVisitNumberNode(NumberNode& node) override {
+    CheckSearchPositionInNode(node);
+  }
+  void OnVisitTextNode(TextNode& node) override {
+    CheckSearchPositionInNode(node);
+  }
+  void OnVisitVariableNode(VariableNode& node) override {
+    if (CheckSearchPositionInNode(node)) {
+      if (node.child) node.child->Visit(*this);
+    }
+  }
+  void OnVisitVariableAccessorNode(VariableAccessorNode& node) override {
+    if (CheckSearchPositionInNode(node)) {
+      if (node.child) node.child->Visit(*this);
+    }
+  }
+  void OnVisitVariableBracketAccessorNode(
+      VariableBracketAccessorNode& node) override {
+    if (CheckSearchPositionInNode(node)) {
+      node.expression->Visit(*this);
+      if (node.child) node.child->Visit(*this);
+    }
+  }
+  void OnVisitIdentifierNode(IdentifierNode& node) override {
+    CheckSearchPositionInNode(node);
+  }
+  void OnVisitObjectFunctionNameNode(ObjectFunctionNameNode& node) override {
+    CheckSearchPositionInNode(node);
+  }
+  void OnVisitFunctionCallNode(FunctionCallNode& node) override {
+    CheckSearchPositionInNode(node);
+    for (auto& parameter : node.parameters) {
+      parameter->Visit(*this);
+    }
+  }
+  void OnVisitEmptyNode(EmptyNode& node) override {
+    CheckSearchPositionInNode(node, /*inclusive=*/true);
+  }
+
+ private:
+  bool CheckSearchPositionInNode(ExpressionNode& node, bool inclusive = false) {
+    if (node.location.GetStartPosition() <= searchedPosition &&
+        ((!inclusive && searchedPosition < node.location.GetEndPosition()) ||
+         (inclusive && searchedPosition <= node.location.GetEndPosition()))) {
+      foundNode = &node;
+      return true;
+    }
+
+    return false;
+  }
+
+  size_t searchedPosition;
+  ExpressionNode* foundNode;
+};
+
+}  // namespace gd
+
+#endif  // GDCORE_EXPRESSIONNODELOCATIONFINDER_H

Core/GDCore/IDE/Events/ExpressionValidator.h

@@ -83,7 +83,10 @@ class GD_CORE_API ExpressionValidator : public ExpressionParser2NodeWorker {
   void OnVisitIdentifierNode(IdentifierNode& node) override {
     ReportAnyError(node);
   }
-  void OnVisitFunctionNode(FunctionNode& node) override {
+  void OnVisitObjectFunctionNameNode(ObjectFunctionNameNode& node) override {
+    ReportAnyError(node);
+  }
+  void OnVisitFunctionCallNode(FunctionCallNode& node) override {
     ReportAnyError(node);
     for (auto& parameter : node.parameters) {
       parameter->Visit(*this);

Core/GDCore/IDE/Events/ExpressionsCorrectnessTesting.cpp

@@ -1,59 +0,0 @@
-/*
- * GDevelop Core
- * Copyright 2008-2016 Florian Rival (Florian.Rival@gmail.com). All rights
- * reserved. This project is released under the MIT License.
- */
-
-#include "GDCore/IDE/Events/ExpressionsCorrectnessTesting.h"
-#include "GDCore/CommonTools.h"
-#include "GDCore/Events/Expression.h"
-#include "GDCore/Events/Parsers/ExpressionParser.h"
-#include "GDCore/Project/Layout.h"
-#include "GDCore/Project/Project.h"
-
-namespace gd {
-
-CallbacksForExpressionCorrectnessTesting::
-    CallbacksForExpressionCorrectnessTesting(const gd::ObjectsContainer& project_,
-                                             const gd::ObjectsContainer& layout_)
-    : project(project_), layout(layout_) {}
-
-bool CallbacksForExpressionCorrectnessTesting::OnSubMathExpression(
-    const gd::Platform& platform,
-    const gd::ObjectsContainer& project,
-    const gd::ObjectsContainer& layout,
-    gd::Expression& expression) {
-  CallbacksForExpressionCorrectnessTesting callbacks(project, layout);
-
-  gd::ExpressionParser parser(expression.GetPlainString());
-  if (!parser.ParseMathExpression(platform, project, layout, callbacks)) {
-#if defined(GD_IDE_ONLY)
-    firstErrorStr = callbacks.GetFirstError();
-    firstErrorPos = callbacks.GetFirstErrorPosition();
-#endif
-    return false;
-  }
-
-  return true;
-}
-
-bool CallbacksForExpressionCorrectnessTesting::OnSubTextExpression(
-    const gd::Platform& platform,
-    const gd::ObjectsContainer& project,
-    const gd::ObjectsContainer& layout,
-    gd::Expression& expression) {
-  CallbacksForExpressionCorrectnessTesting callbacks(project, layout);
-
-  gd::ExpressionParser parser(expression.GetPlainString());
-  if (!parser.ParseStringExpression(platform, project, layout, callbacks)) {
-#if defined(GD_IDE_ONLY)
-    firstErrorStr = callbacks.GetFirstError();
-    firstErrorPos = callbacks.GetFirstErrorPosition();
-#endif
-    return false;
-  }
-
-  return true;
-}
-
-}  // namespace gd

Core/GDCore/IDE/Events/ExpressionsCorrectnessTesting.h

@@ -1,75 +0,0 @@
-/*
- * GDevelop Core
- * Copyright 2008-2016 Florian Rival (Florian.Rival@gmail.com). All rights
- * reserved. This project is released under the MIT License.
- */
-
-#ifndef GDCORE_EXPRESSIONSCORRECTNESSTESTING_H
-#define GDCORE_EXPRESSIONSCORRECTNESSTESTING_H
-
-#include <vector>
-#include "GDCore/Events/Parsers/ExpressionParser.h"
-#include "GDCore/String.h"
-namespace gd {
-class ExpressionMetadata;
-class Expression;
-class Project;
-class Layout;
-}
-
-namespace gd {
-
-// TODO: Replace and remove (ExpressionValidator)
-
-/**
- * \brief Parser callbacks used to check expressions correctness
- *
- * Usage example:
- * \code
- * gd::CallbacksForExpressionCorrectnessTesting callbacks(game, scene);
- * gd::ExpressionParser expressionParser(expression);
- * if ( !expressionParser.ParseMathExpression(game, scene, callbacks) )
- *     //Expression is not valid
- * else
- *     //Expression is correct
- * \endcode
- *
- * \see gd::ExpressionParser
- * \see gd::ParserCallbacks
- *
- * \ingroup IDE
- */
-class GD_CORE_API CallbacksForExpressionCorrectnessTesting
-    : public gd::ParserCallbacks {
- public:
-  CallbacksForExpressionCorrectnessTesting(const gd::ObjectsContainer& project,
-                                           const gd::ObjectsContainer& layout);
-  virtual ~CallbacksForExpressionCorrectnessTesting(){};
-
-  void OnConstantToken(gd::String text){};
-  void OnStaticFunction(gd::String functionName,
-                        const std::vector<gd::Expression>& parameters,
-                        const gd::ExpressionMetadata& expressionInfo){};
-  void OnObjectFunction(gd::String functionName,
-                        const std::vector<gd::Expression>& parameters,
-                        const gd::ExpressionMetadata& expressionInfo){};
-  void OnObjectBehaviorFunction(gd::String functionName,
-                                const std::vector<gd::Expression>& parameters,
-                                const gd::ExpressionMetadata& expressionInfo){};
-  bool OnSubMathExpression(const gd::Platform& platform,
-                           const gd::ObjectsContainer& project,
-                           const gd::ObjectsContainer& layout,
-                           gd::Expression& expression);
-  bool OnSubTextExpression(const gd::Platform& platform,
-                           const gd::ObjectsContainer& project,
-                           const gd::ObjectsContainer& layout,
-                           gd::Expression& expression);
-
- private:
-  const gd::ObjectsContainer& project;
-  const gd::ObjectsContainer& layout;
-};
-
-}  // namespace gd
-
-#endif  // GDCORE_EXPRESSIONSCORRECTNESSTESTING_H

Core/GDCore/IDE/Events/ExpressionsParameterMover.cpp

@@ -74,7 +74,8 @@ class GD_CORE_API ExpressionParameterMover
     if (node.child) node.child->Visit(*this);
   }
   void OnVisitIdentifierNode(IdentifierNode& node) override {}
-  void OnVisitFunctionNode(FunctionNode& node) override {
+  void OnVisitObjectFunctionNameNode(ObjectFunctionNameNode& node) override {}
+  void OnVisitFunctionCallNode(FunctionCallNode& node) override {
     auto moveParameter =
         [this](std::vector<std::unique_ptr<gd::ExpressionNode>>& parameters) {
           if (oldIndex >= parameters.size() || newIndex >= parameters.size())
@@ -87,7 +88,8 @@ class GD_CORE_API ExpressionParameterMover
         };
 
     if (node.functionName == functionName) {
-      if (!objectType.empty() && !node.objectName.empty()) {
+      if (behaviorType.empty() && !objectType.empty() &&
+          !node.objectName.empty()) {
         // Move parameter of an object function
         const gd::String& thisObjectType = gd::GetTypeOfObject(
             globalObjectsContainer, objectsContainer, node.objectName);
@@ -103,7 +105,7 @@ class GD_CORE_API ExpressionParameterMover
           moveParameter(node.parameters);
           hasDoneMoving = true;
         }
-      } else {
+      } else if (behaviorType.empty() && objectType.empty()) {
         // Move parameter of a free function
         moveParameter(node.parameters);
         hasDoneMoving = true;
@@ -119,10 +121,12 @@ class GD_CORE_API ExpressionParameterMover
   bool hasDoneMoving;
   const gd::ObjectsContainer& globalObjectsContainer;
   const gd::ObjectsContainer& objectsContainer;
-  const gd::String& behaviorType;  // The behavior type for which the expression
-                                   // must be replaced (optional)
-  const gd::String& objectType;    // The object type for which the expression
-                                   // must be replaced (optional)
+  const gd::String& behaviorType;  // The behavior type of the function which
+                                   // must have a parameter moved (optional).
+  const gd::String& objectType;    // The object type of the function which
+                                   // must have a parameter moved (optional). If
+                                   // `behaviorType` is not empty, it takes
+                                   // precedence over `objectType`.
   const gd::String& functionName;
   std::size_t oldIndex;
   std::size_t newIndex;

Core/GDCore/IDE/Events/ExpressionsRenamer.cpp

@@ -71,13 +71,41 @@ class GD_CORE_API ExpressionFunctionRenamer
     if (node.child) node.child->Visit(*this);
   }
   void OnVisitIdentifierNode(IdentifierNode& node) override {}
-  void OnVisitFunctionNode(FunctionNode& node) override {
+  void OnVisitObjectFunctionNameNode(ObjectFunctionNameNode& node) override {
+    if (!node.behaviorFunctionName.empty()) {
+      // Behavior function name
+      if (!behaviorType.empty() &&
+          node.behaviorFunctionName == oldFunctionName) {
+        const gd::String& thisBehaviorType =
+            gd::GetTypeOfBehavior(globalObjectsContainer,
+                                  objectsContainer,
+                                  node.objectFunctionOrBehaviorName);
+        if (thisBehaviorType == behaviorType) {
+          node.behaviorFunctionName = newFunctionName;
+          hasDoneRenaming = true;
+        }
+      }
+    } else {
+      // Object function name
+      if (behaviorType.empty() && !objectType.empty() &&
+          node.objectFunctionOrBehaviorName == oldFunctionName) {
+        const gd::String& thisObjectType = gd::GetTypeOfObject(
+            globalObjectsContainer, objectsContainer, node.objectName);
+        if (thisObjectType == objectType) {
+          node.objectFunctionOrBehaviorName = newFunctionName;
+          hasDoneRenaming = true;
+        }
+      }
+    }
+  }
+  void OnVisitFunctionCallNode(FunctionCallNode& node) override {
     if (node.functionName == oldFunctionName) {
-      if (!objectType.empty() && !node.objectName.empty()) {
+      if (behaviorType.empty() && !objectType.empty() &&
+          !node.objectName.empty()) {
         // Replace an object function
         const gd::String& thisObjectType = gd::GetTypeOfObject(
             globalObjectsContainer, objectsContainer, node.objectName);
-        if (thisObjectType == behaviorType) {
+        if (thisObjectType == objectType) {
           node.functionName = newFunctionName;
           hasDoneRenaming = true;
         }
@@ -89,7 +117,7 @@ class GD_CORE_API ExpressionFunctionRenamer
           node.functionName = newFunctionName;
           hasDoneRenaming = true;
         }
-      } else {
+      } else if (behaviorType.empty() && objectType.empty()) {
         // Replace a free function
         node.functionName = newFunctionName;
         hasDoneRenaming = true;
@@ -106,9 +134,11 @@ class GD_CORE_API ExpressionFunctionRenamer
   const gd::ObjectsContainer& globalObjectsContainer;
   const gd::ObjectsContainer& objectsContainer;
   const gd::String& behaviorType;  // The behavior type for which the expression
-                                   // must be replaced (optional)
+                                   // must be replaced (optional).
   const gd::String& objectType;    // The object type for which the expression
-                                   // must be replaced (optional)
+                                   // must be replaced (optional). If
+                                   // `behaviorType` is not empty, it takes
+                                   // precedence over `objectType`.
   const gd::String& oldFunctionName;
   const gd::String& newFunctionName;
 };

Core/GDCore/IDE/Events/InstructionSentenceFormatter.cpp

@@ -49,9 +49,15 @@ InstructionSentenceFormatter::GetAsFormattedText(
 
   gd::String sentence = metadata.GetSentence();
   std::replace(sentence.Raw().begin(), sentence.Raw().end(), '\n', ' ');
-  bool parse = true;
 
+  size_t loopCount = 0;
+  bool parse = true;
   while (parse) {
+    if (loopCount > 40) {
+      break;
+    }
+    loopCount++;
+
     // Search first parameter
     parse = false;
     size_t firstParamPosition = gd::String::npos;

Core/GDCore/IDE/ProjectStripper.cpp

@@ -4,6 +4,7 @@
  * reserved. This project is released under the MIT License.
  */
 #include "ProjectStripper.h"
+
 #include "GDCore/Project/ExternalEvents.h"
 #include "GDCore/Project/ExternalLayout.h"
 #include "GDCore/Project/Layout.h"
@@ -20,61 +21,8 @@ void GD_CORE_API ProjectStripper::StripProjectForExport(gd::Project& project) {
     project.GetLayout(i).GetObjectGroups().Clear();
     project.GetLayout(i).GetEvents().Clear();
   }
-}
 
-void GD_CORE_API ProjectStripper::StripProjectForLayoutEdition(
-    gd::Project& project, const gd::String& layoutName) {
-  while (project.GetExternalEventsCount() > 0)
-    project.RemoveExternalEvents(project.GetExternalEvents(0).GetName());
-
-  for (unsigned int i = 0; i < project.GetLayoutsCount(); ++i) {
-    auto& layout = project.GetLayout(i);
-    if (layoutName == layout.GetName()) continue;
-
-    project.GetLayout(i).GetEvents().Clear();
-    project.GetLayout(i).GetInitialInstances().Clear();
-  }
-
-  for (unsigned int i = 0; i < project.GetExternalEventsCount(); ++i) {
-    project.GetExternalEvents(i).GetEvents().Clear();
-  }
-
-  for (unsigned int i = 0; i < project.GetExternalLayoutsCount(); ++i) {
-    project.GetExternalLayout(i).GetInitialInstances().Clear();
-  }
-}
-
-void GD_CORE_API ProjectStripper::StripProjectForExternalLayoutEdition(
-    gd::Project& project, const gd::String& externalLayoutName) {
-  while (project.GetExternalEventsCount() > 0)
-    project.RemoveExternalEvents(project.GetExternalEvents(0).GetName());
-
-  gd::String associatedLayoutName;
-  if (project.HasExternalLayoutNamed(externalLayoutName)) {
-    associatedLayoutName =
-        project.GetExternalLayout(externalLayoutName).GetAssociatedLayout();
-  }
-
-  for (unsigned int i = 0; i < project.GetLayoutsCount(); ++i) {
-    auto& layout = project.GetLayout(i);
-    if (!associatedLayoutName.empty() &&
-        associatedLayoutName == layout.GetName())
-      continue;
-
-    project.GetLayout(i).GetEvents().Clear();
-    project.GetLayout(i).GetInitialInstances().Clear();
-  }
-
-  for (unsigned int i = 0; i < project.GetExternalEventsCount(); ++i) {
-    project.GetExternalEvents(i).GetEvents().Clear();
-  }
-
-  for (unsigned int i = 0; i < project.GetExternalLayoutsCount(); ++i) {
-    auto& externalLayout = project.GetExternalLayout(i);
-    if (externalLayoutName == externalLayout.GetName()) continue;
-
-    externalLayout.GetInitialInstances().Clear();
-  }
+  project.ClearEventsFunctionsExtensions();
 }
 
 }  // namespace gd

Core/GDCore/IDE/ProjectStripper.h

@@ -28,23 +28,6 @@ class GD_CORE_API ProjectStripper {
    */
   static void StripProjectForExport(gd::Project& project);
 
-  /**
-   * \brief Strip project to keep only the full content of the specified
-   * layout. The content of other layouts, external events and external layouts
-   * is removed.
-   */
-  static void StripProjectForLayoutEdition(gd::Project& project,
-                                           const gd::String& layoutName);
-
-  /**
-   * \brief Strip project to keep only the full content of the specified
-   * external layout and the associated layout.
-   * The content of other layouts, external events and external layouts is
-   * removed.
-   */
-  static void StripProjectForExternalLayoutEdition(
-      gd::Project& project, const gd::String& externalLayoutName);
-
  private:
   ProjectStripper(){};
   virtual ~ProjectStripper(){};

Core/GDCore/IDE/SceneNameMangler.cpp

@@ -10,34 +10,49 @@
 
 namespace gd {
 
-gd::String SceneNameMangler::GetMangledSceneName(gd::String sceneName) {
-  static const gd::String allowedCharacters =
-      "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
-  static const gd::String allowedExceptFirst = "0123456789";
+SceneNameMangler *SceneNameMangler::_singleton = nullptr;
 
-  std::size_t i = 0;
-  for (auto it = sceneName.begin(); it != sceneName.end(); ++it) {
-    char32_t character = *it;
-    if (allowedCharacters.find(character) == gd::String::npos &&
-        (allowedExceptFirst.find(character) == gd::String::npos ||
-         i == 0))  // Also disallow some characters to be in first position
-    {
-      // Replace the character by an underscore and its unicode codepoint (in
-      // base 10)
-      auto it2 = it;
-      ++it2;
-      sceneName.replace(it, it2, "_" + gd::String::From(character));
-
-      // The iterator it may have been invalidated:
-      // re-assign it with a new iterator pointing to the same position.
-      it = sceneName.begin();
-      std::advance(it, i);
-    }
-
-    ++i;
+const gd::String &SceneNameMangler::GetMangledSceneName(
+    const gd::String &sceneName) {
+  auto it = mangledSceneNames.find(sceneName);
+  if (it != mangledSceneNames.end()) {
+    return it->second;
   }
 
-  return sceneName;
+  gd::String partiallyMangledName = sceneName;
+  static const gd::String alwaysAllowedCharacters =
+      "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
+  static const gd::String allowedExceptFirstCharacters = "0123456789";
+
+  for (size_t i = 0; i < partiallyMangledName.size();
+       ++i)  // Replace all unallowed letter by an underscore and the unicode
+             // code point of the letter
+  {
+    if (alwaysAllowedCharacters.find_first_of(
+            std::u32string(1, partiallyMangledName[i])) == gd::String::npos &&
+        (i == 0 ||
+         allowedExceptFirstCharacters.find(
+             std::u32string(1, partiallyMangledName[i])) == gd::String::npos)) {
+      char32_t unallowedChar = partiallyMangledName[i];
+      partiallyMangledName.replace(i, 1, "_" + gd::String::From(unallowedChar));
+    }
+  }
+
+  mangledSceneNames[sceneName] = partiallyMangledName;
+  return mangledSceneNames[sceneName];
+}
+
+SceneNameMangler *SceneNameMangler::Get() {
+  if (nullptr == _singleton) _singleton = new SceneNameMangler;
+
+  return (static_cast<SceneNameMangler *>(_singleton));
+}
+
+void SceneNameMangler::DestroySingleton() {
+  if (nullptr != _singleton) {
+    delete _singleton;
+    _singleton = nullptr;
+  }
 }
 
 }  // namespace gd

Core/GDCore/IDE/SceneNameMangler.h

@@ -6,12 +6,14 @@
 
 #ifndef SCENENAMEMANGLER_H
 #define SCENENAMEMANGLER_H
+#include <unordered_map>
 #include "GDCore/String.h"
 
 namespace gd {
 
 /**
- * \brief Used to mangle the name of a scene
+ * \brief Mangle the name of a scene, so that it can be used in code or file
+ * names.
  *
  * \ingroup IDE
  */
@@ -21,12 +23,22 @@ class GD_CORE_API SceneNameMangler {
    * \brief Mangle the name of a scene, replacing all characters that are not
    * 0-9, a-z or A-Z by "_"+UnicodeCodePointOfTheCharacter. The first character
    * must be a letter, otherwise it is also replaced in the same manner.
+   *
+   * The mangled name is memoized as this is intensively used during project
+   * export and events code generation.
    */
-  static gd::String GetMangledSceneName(gd::String sceneName);
+  const gd::String& GetMangledSceneName(const gd::String& sceneName);
+
+  static SceneNameMangler* Get();
+  static void DestroySingleton();
 
  private:
   SceneNameMangler(){};
   virtual ~SceneNameMangler(){};
+  static SceneNameMangler* _singleton;
+
+  std::unordered_map<gd::String, gd::String>
+      mangledSceneNames;  ///< Memoized results of mangling
 };
 
 }  // namespace gd

Core/GDCore/IDE/WholeProjectRefactorer.cpp

@@ -470,7 +470,17 @@ void WholeProjectRefactorer::RenameBehaviorProperty(
   auto& properties = eventsBasedBehavior.GetPropertyDescriptors();
   if (!properties.Has(oldPropertyName)) return;
 
-  const auto& property = properties.Get(oldPropertyName);
+  // Order is important: we first rename the expressions then the instructions,
+  // to avoid being unable to fetch the metadata (the types of parameters) of
+  // instructions after they are renamed.
+  gd::ExpressionsRenamer expressionRenamer =
+      gd::ExpressionsRenamer(project.GetCurrentPlatform());
+  expressionRenamer.SetReplacedBehaviorExpression(
+      GetBehaviorFullType(eventsFunctionsExtension.GetName(),
+                          eventsBasedBehavior.GetName()),
+      EventsBasedBehavior::GetPropertyExpressionName(oldPropertyName),
+      EventsBasedBehavior::GetPropertyExpressionName(newPropertyName));
+  ExposeProjectEvents(project, expressionRenamer);
 
   gd::InstructionsTypeRenamer actionRenamer = gd::InstructionsTypeRenamer(
       project,
@@ -495,15 +505,6 @@ void WholeProjectRefactorer::RenameBehaviorProperty(
           eventsBasedBehavior.GetName(),
           EventsBasedBehavior::GetPropertyConditionName(newPropertyName)));
   ExposeProjectEvents(project, conditionRenamer);
-
-  gd::ExpressionsRenamer expressionRenamer =
-      gd::ExpressionsRenamer(project.GetCurrentPlatform());
-  expressionRenamer.SetReplacedBehaviorExpression(
-      GetBehaviorFullType(eventsFunctionsExtension.GetName(),
-                          eventsBasedBehavior.GetName()),
-      EventsBasedBehavior::GetPropertyExpressionName(oldPropertyName),
-      EventsBasedBehavior::GetPropertyExpressionName(newPropertyName));
-  ExposeProjectEvents(project, expressionRenamer);
 }
 
 void WholeProjectRefactorer::RenameEventsBasedBehavior(

Core/GDCore/IDE/WholeProjectRefactorer.h

@@ -50,7 +50,10 @@ class GD_CORE_API WholeProjectRefactorer {
                                   gd::ArbitraryEventsWorkerWithContext& worker);
 
   /**
-   * \brief Refactor the project after an events function extension is renamed
+   * \brief Refactor the project **before** an events function extension is renamed.
+   *
+   * \warning Do the renaming of the specified extension after calling this.
+   * This is because the extension is expected to have its old name for the refactoring.
    */
   static void RenameEventsFunctionsExtension(
       gd::Project& project,
@@ -59,7 +62,10 @@ class GD_CORE_API WholeProjectRefactorer {
       const gd::String& newName);
 
   /**
-   * \brief Refactor the project after an events function is renamed
+   * \brief Refactor the project **before** an events function is renamed.
+   *
+   * \warning Do the renaming of the specified function after calling this.
+   * This is because the function is expected to have its old name for the refactoring.
    */
   static void RenameEventsFunction(
       gd::Project& project,
@@ -68,8 +74,11 @@ class GD_CORE_API WholeProjectRefactorer {
       const gd::String& newFunctionName);
 
   /**
-   * \brief Refactor the project after an events function of a behavior is
+   * \brief Refactor the project **before** an events function of a behavior is
    * renamed.
+   *
+   * \warning Do the renaming of the specified function after calling this.
+   * This is because the function is expected to have its old name for the refactoring.
    */
   static void RenameBehaviorEventsFunction(
       gd::Project& project,
@@ -79,8 +88,11 @@ class GD_CORE_API WholeProjectRefactorer {
       const gd::String& newFunctionName);
 
   /**
-   * \brief Refactor the project after an events function parameter
-   * was moved.
+   * \brief Refactor the project **before** an events function parameter
+   * is moved.
+   *
+   * \warning Do the move of the specified function parameters after calling this.
+   * This is because the function is expected to be in its old state for the refactoring.
    */
   static void MoveEventsFunctionParameter(
       gd::Project& project,
@@ -90,8 +102,11 @@ class GD_CORE_API WholeProjectRefactorer {
       std::size_t newIndex);
 
   /**
-   * \brief Refactor the project after the parmaeter of an events function of a
-   * behavior was moved.
+   * \brief Refactor the project **before** the parameter of an events function of a
+   * behavior is moved.
+   *
+   * \warning Do the move of the specified function parameters after calling this.
+   * This is because the function is expected to be in its old state for the refactoring.
    */
   static void MoveBehaviorEventsFunctionParameter(
       gd::Project& project,
@@ -102,8 +117,11 @@ class GD_CORE_API WholeProjectRefactorer {
       std::size_t newIndex);
 
   /**
-   * \brief Refactor the project after a property of a behavior is
+   * \brief Refactor the project **before** a property of a behavior is
    * renamed.
+   *
+   * \warning Do the renaming of the specified property after calling this.
+   * This is because the property is expected to have its old name for the refactoring.
    */
   static void RenameBehaviorProperty(
       gd::Project& project,
@@ -113,7 +131,10 @@ class GD_CORE_API WholeProjectRefactorer {
       const gd::String& newPropertyName);
 
   /**
-   * \brief Refactor the project after a behavior is renamed.
+   * \brief Refactor the project **before** a behavior is renamed.
+   *
+   * \warning Do the renaming of the specified behavior after calling this.
+   * This is because the behavior is expected to have its old name for the refactoring.
    */
   static void RenameEventsBasedBehavior(
       gd::Project& project,
@@ -160,7 +181,7 @@ class GD_CORE_API WholeProjectRefactorer {
       bool isObjectGroup);
 
   /**
-   * \brief Refactor the events function after an object or group is renamed
+   * \brief Refactor the events function after an object or group is removed
    *
    * This will update the events of the function and groups.
    */

Core/GDCore/Project/Behavior.cpp

@@ -15,7 +15,7 @@ Behavior::~Behavior(){};
 
 #if defined(GD_IDE_ONLY)
 std::map<gd::String, gd::PropertyDescriptor> Behavior::GetProperties(
-    const gd::SerializerElement& behaviorContent, gd::Project& project) const {
+    const gd::SerializerElement& behaviorContent) const {
   std::map<gd::String, gd::PropertyDescriptor> nothing;
   return nothing;
 }

Core/GDCore/Project/Behavior.h

@@ -61,7 +61,7 @@ class GD_CORE_API Behavior {
    * \see gd::PropertyDescriptor
    */
   virtual std::map<gd::String, gd::PropertyDescriptor> GetProperties(
-      const gd::SerializerElement& behaviorContent, gd::Project& project) const;
+      const gd::SerializerElement& behaviorContent) const;
 
   /**
    * \brief Called when the IDE wants to update a custom property of the
@@ -72,8 +72,7 @@ class GD_CORE_API Behavior {
    */
   virtual bool UpdateProperty(gd::SerializerElement& behaviorContent,
                               const gd::String& name,
-                              const gd::String& value,
-                              gd::Project& project) {
+                              const gd::String& value) {
     return false;
   };
 #endif

Core/GDCore/Project/BehaviorsSharedData.cpp

@@ -16,7 +16,7 @@ BehaviorsSharedData::~BehaviorsSharedData(){};
 
 #if defined(GD_IDE_ONLY)
 std::map<gd::String, gd::PropertyDescriptor> BehaviorsSharedData::GetProperties(
-    const gd::SerializerElement& behaviorSharedDataContent, gd::Project& project) const {
+    const gd::SerializerElement& behaviorSharedDataContent) const {
   std::map<gd::String, gd::PropertyDescriptor> nothing;
   return nothing;
 }

Core/GDCore/Project/BehaviorsSharedData.h

@@ -64,8 +64,7 @@ class GD_CORE_API BehaviorsSharedData {
    * \see gd::PropertyDescriptor
    */
   virtual std::map<gd::String, gd::PropertyDescriptor> GetProperties(
-      const gd::SerializerElement& behaviorSharedDataContent,
-      gd::Project& project) const;
+      const gd::SerializerElement& behaviorSharedDataContent) const;
 
   /**
    * \brief Called when the IDE wants to update a property of the shared data
@@ -75,8 +74,7 @@ class GD_CORE_API BehaviorsSharedData {
    */
   virtual bool UpdateProperty(gd::SerializerElement& behaviorSharedDataContent,
                               const gd::String& name,
-                              const gd::String& value,
-                              gd::Project& project) {
+                              const gd::String& value) {
     return false;
   };
 #endif

Core/GDCore/Project/EventsFunctionsExtension.cpp

@@ -70,6 +70,19 @@ void EventsFunctionsExtension::UnserializeFrom(
       "eventsBasedBehavior", project, element.GetChild("eventsBasedBehaviors"));
 }
 
+bool EventsFunctionsExtension::IsExtensionLifecycleEventsFunction(
+    const gd::String& eventsFunctionName) {
+  // The list of all supported lifecycle events function names.
+  // If adding a new one, code generator(s) must be updated.
+  return eventsFunctionName == "onFirstSceneLoaded" ||
+         eventsFunctionName == "onSceneLoaded" ||
+         eventsFunctionName == "onScenePreEvents" ||
+         eventsFunctionName == "onScenePostEvents" ||
+         eventsFunctionName == "onScenePaused" ||
+         eventsFunctionName == "onSceneResumed" ||
+         eventsFunctionName == "onSceneUnloading";
+}
+
 }  // namespace gd
 
 #endif

Core/GDCore/Project/EventsFunctionsExtension.h

@@ -8,8 +8,8 @@
 #define GDCORE_EVENTSFUNCTIONEXTENSION_H
 
 #include <vector>
-#include "GDCore/Project/EventsFunctionsContainer.h"
 #include "GDCore/Project/EventsBasedBehavior.h"
+#include "GDCore/Project/EventsFunctionsContainer.h"
 #include "GDCore/String.h"
 #include "GDCore/Tools/SerializableWithNameList.h"
 namespace gd {
@@ -59,7 +59,8 @@ class GD_CORE_API EventsFunctionsExtension : public EventsFunctionsContainer {
   }
 
   const gd::String& GetShortDescription() const { return shortDescription; };
-  EventsFunctionsExtension& SetShortDescription(const gd::String& shortDescription_) {
+  EventsFunctionsExtension& SetShortDescription(
+      const gd::String& shortDescription_) {
     shortDescription = shortDescription_;
     return *this;
   }
@@ -97,15 +98,15 @@ class GD_CORE_API EventsFunctionsExtension : public EventsFunctionsContainer {
   /**
    * \brief Return a reference to the list of the events based behaviors.
    */
-  SerializableWithNameList<EventsBasedBehavior>& GetEventsBasedBehaviors() {
+  gd::SerializableWithNameList<EventsBasedBehavior>& GetEventsBasedBehaviors() {
     return eventsBasedBehaviors;
   }
 
   /**
    * \brief Return a const reference to the list of the events based behaviors.
    */
-  const SerializableWithNameList<EventsBasedBehavior>& GetEventsBasedBehaviors()
-      const {
+  const gd::SerializableWithNameList<EventsBasedBehavior>&
+  GetEventsBasedBehaviors() const {
     return eventsBasedBehaviors;
   }
 
@@ -124,6 +125,12 @@ class GD_CORE_API EventsFunctionsExtension : public EventsFunctionsContainer {
                        const gd::SerializerElement& element);
   ///@}
 
+  /** \name Lifecycle event functions
+   */
+  ///@{
+  static bool IsExtensionLifecycleEventsFunction(const gd::String& eventsFunctionName);
+  ///@}
+
  private:
   /**
    * Initialize object using another object. Used by copy-ctor and assign-op.
@@ -139,7 +146,7 @@ class GD_CORE_API EventsFunctionsExtension : public EventsFunctionsContainer {
   gd::String fullName;
   gd::String tags;
   gd::String author;
-  SerializableWithNameList<EventsBasedBehavior> eventsBasedBehaviors;
+  gd::SerializableWithNameList<EventsBasedBehavior> eventsBasedBehaviors;
 };
 
 }  // namespace gd

Core/GDCore/Project/InitialInstance.cpp

@@ -5,10 +5,12 @@
  */
 
 #include "GDCore/Project/InitialInstance.h"
+
 #include "GDCore/Project/Layout.h"
 #include "GDCore/Project/Object.h"
 #include "GDCore/Project/Project.h"
 #include "GDCore/Serialization/SerializerElement.h"
+#include "GDCore/Tools/UUID/UUID.h"
 #if defined(GD_IDE_ONLY)
 #include "GDCore/Project/PropertyDescriptor.h"
 #endif
@@ -27,7 +29,8 @@ InitialInstance::InitialInstance()
       personalizedSize(false),
       width(0),
       height(0),
-      locked(false) {}
+      locked(false),
+      persistentUuid(UUID::MakeUuid4()) {}
 
 void InitialInstance::UnserializeFrom(const SerializerElement& element) {
   SetObjectName(element.GetStringAttribute("name", "", "nom"));
@@ -42,6 +45,9 @@ void InitialInstance::UnserializeFrom(const SerializerElement& element) {
   SetLayer(element.GetStringAttribute("layer"));
   SetLocked(element.GetBoolAttribute("locked", false));
 
+  persistentUuid = element.GetStringAttribute("persistentUuid");
+  if (persistentUuid.empty()) ResetPersistentUuid();
+
   floatInfos.clear();
   const SerializerElement& floatPropElement =
       element.GetChild("numberProperties", 0, "floatInfos");
@@ -79,6 +85,9 @@ void InitialInstance::SerializeTo(SerializerElement& element) const {
   element.SetAttribute("height", GetCustomHeight());
   element.SetAttribute("locked", IsLocked());
 
+  if (persistentUuid.empty()) persistentUuid = UUID::MakeUuid4();
+  element.SetStringAttribute("persistentUuid", persistentUuid);
+
   SerializerElement& floatPropElement = element.AddChild("numberProperties");
   floatPropElement.ConsiderAsArrayOf("property");
   for (std::map<gd::String, float>::const_iterator floatInfo =
@@ -104,6 +113,11 @@ void InitialInstance::SerializeTo(SerializerElement& element) const {
   GetVariables().SerializeTo(element.AddChild("initialVariables"));
 }
 
+InitialInstance& InitialInstance::ResetPersistentUuid() {
+  persistentUuid = UUID::MakeUuid4();
+  return *this;
+}
+
 #if defined(GD_IDE_ONLY)
 std::map<gd::String, gd::PropertyDescriptor>
 InitialInstance::GetCustomProperties(gd::Project& project, gd::Layout& layout) {
@@ -146,13 +160,12 @@ const gd::String& InitialInstance::GetRawStringProperty(
   return it != stringInfos.end() ? it->second : *badStringProperyValue;
 }
 
-void InitialInstance::SetRawFloatProperty(const gd::String& name, float value)
-{
+void InitialInstance::SetRawFloatProperty(const gd::String& name, float value) {
   floatInfos[name] = value;
 }
 
-void InitialInstance::SetRawStringProperty(const gd::String& name, const gd::String& value)
-{
+void InitialInstance::SetRawStringProperty(const gd::String& name,
+                                           const gd::String& value) {
   stringInfos[name] = value;
 }
 #endif

Core/GDCore/Project/InitialInstance.h

@@ -200,7 +200,7 @@ class GD_CORE_API InitialInstance {
   /**
    * \brief Get the value of a float property stored in the instance.
    * \note Only use this when \a GetCustomProperties is too slow (when rendering
-   * instances for example). 
+   * instances for example).
    * \return the value of the property, or 0 if it does
    * not exists.
    */
@@ -209,7 +209,7 @@ class GD_CORE_API InitialInstance {
   /**
    * \brief Get the value of a string property stored in the instance.
    * \note Only use this when \a GetCustomProperties is too slow (when rendering
-   * instances for example). 
+   * instances for example).
    * \return the value of the propety, or an empty
    * string if it does not exists.
    */
@@ -240,6 +240,12 @@ class GD_CORE_API InitialInstance {
    * \brief Unserialize the instances container.
    */
   virtual void UnserializeFrom(const SerializerElement& element);
+
+  /**
+   * \brief Reset the persistent UUID used to recognize
+   * the same initial instance between serialization.
+   */
+  InitialInstance& ResetPersistentUuid();
   ///@}
 
   // More properties can be stored in floatInfos and stringInfos.
@@ -260,6 +266,7 @@ class GD_CORE_API InitialInstance {
   float height;           ///< Object custom height
   gd::VariablesContainer initialVariables;  ///< Instance specific variables
   bool locked;                              ///< True if the instance is locked
+  mutable gd::String persistentUuid; ///< A persistent random version 4 UUID, useful for hot reloading.
 
   static gd::String*
       badStringProperyValue;  ///< Empty string returned by GetRawStringProperty

Core/GDCore/Project/Layout.cpp

@@ -63,7 +63,7 @@ Layout::Layout()
 
 void Layout::SetName(const gd::String& name_) {
   name = name_;
-  mangledName = gd::SceneNameMangler::GetMangledSceneName(name);
+  mangledName = gd::SceneNameMangler::Get()->GetMangledSceneName(name);
 };
 
 bool Layout::HasBehaviorSharedData(const gd::String& behaviorName) {

Core/GDCore/Project/Object.cpp

@@ -77,8 +77,7 @@ gd::BehaviorContent& Object::AddBehavior(
 }
 
 #if defined(GD_IDE_ONLY)
-std::map<gd::String, gd::PropertyDescriptor> Object::GetProperties(
-    gd::Project& project) const {
+std::map<gd::String, gd::PropertyDescriptor> Object::GetProperties() const {
   std::map<gd::String, gd::PropertyDescriptor> nothing;
   return nothing;
 }

Core/GDCore/Project/Object.h

@@ -139,8 +139,7 @@ class GD_CORE_API Object {
    * \return a std::map with properties names as key.
    * \see gd::PropertyDescriptor
    */
-  virtual std::map<gd::String, gd::PropertyDescriptor> GetProperties(
-      gd::Project& project) const;
+  virtual std::map<gd::String, gd::PropertyDescriptor> GetProperties() const;
 
   /**
    * \brief Called when the IDE wants to update a custom property of the object
@@ -148,8 +147,7 @@ class GD_CORE_API Object {
    * \return false if the new value cannot be set
    */
   virtual bool UpdateProperty(const gd::String& name,
-                              const gd::String& value,
-                              gd::Project& project) {
+                              const gd::String& value) {
     return false;
   };
   ///@}

Core/GDCore/Project/Project.cpp

@@ -7,6 +7,7 @@
 #include "Project.h"
 #include <stdio.h>
 #include <stdlib.h>
+#include <cctype>
 #include <SFML/System/Utf.hpp>
 #include <fstream>
 #include <map>
@@ -520,6 +521,9 @@ void Project::RemoveEventsFunctionsExtension(const gd::String& name) {
 
   eventsFunctionsExtensions.erase(eventsFunctionExtension);
 }
+void Project::ClearEventsFunctionsExtensions() {
+  eventsFunctionsExtensions.clear();
+}
 #endif
 
 void Project::UnserializeFrom(const SerializerElement& element) {
@@ -945,18 +949,16 @@ void Project::SerializeTo(SerializerElement& element) const {
 #endif
 }
 
-bool Project::ValidateObjectName(const gd::String& name) {
+bool Project::ValidateName(const gd::String& name) {
   if (name.empty()) return false;
 
+  if (isdigit(name[0])) return false;
+
   gd::String allowedCharacters =
       "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_";
   return !(name.find_first_not_of(allowedCharacters) != gd::String::npos);
 }
 
-gd::String Project::GetBadObjectNameWarning() {
-  return _("Please use only letters, digits\nand underscores ( _ ).");
-}
-
 void Project::ExposeResources(gd::ArbitraryResourceWorker& worker) {
   // See also gd::WholeProjectRefactorer::ExposeProjectEvents for a method that
   // traverse the whole project (this time for events) and ExposeProjectEffects

Core/GDCore/Project/Project.h

@@ -8,6 +8,7 @@
 #define GDCORE_PROJECT_H
 #include <memory>
 #include <vector>
+
 #include "GDCore/Project/LoadingScreen.h"
 #include "GDCore/Project/ObjectGroupsContainer.h"
 #include "GDCore/Project/ObjectsContainer.h"
@@ -460,22 +461,27 @@ class GD_CORE_API Project : public ObjectsContainer {
   std::size_t GetLayoutsCount() const;
 
   /**
-   * \brief \brief Adds a new empty layout called "name" at the specified
+   * \brief Add a new empty layout called "name" at the specified
    * position in the layout list.
    */
   gd::Layout& InsertNewLayout(const gd::String& name, std::size_t position);
 
   /**
-   * \brief \brief Adds a new layout constructed from the layout passed as
-   * parameter. \note No pointer or reference must be kept on the layout passed
-   * as parameter. \param layout The layout that must be copied and inserted
-   * into the project \param position Insertion position. Even if the position
+   * \brief Add a new layout constructed from the layout passed as
+   * parameter.
+   * \param layout The layout that must be copied and inserted
+   * into the project
+   * \param position Insertion position. Even if the position
    * is invalid, the layout must be inserted at the end of the layout list.
+   *
+   * \note No pointer or reference must be kept on the layout passed
+   * as parameter.
+   *
    */
   gd::Layout& InsertLayout(const Layout& layout, std::size_t position);
 
   /**
-   * Must delete layout named "name".
+   * \brief Delete layout named "name".
    */
   void RemoveLayout(const gd::String& name);
 
@@ -592,7 +598,7 @@ class GD_CORE_API Project : public ObjectsContainer {
                                        std::size_t position);
 
   /**
-   * Must delete external events named "name".
+   * \brief Delete external events named "name".
    */
   void RemoveExternalEvents(const gd::String& name);
 #endif
@@ -673,7 +679,7 @@ class GD_CORE_API Project : public ObjectsContainer {
                                            std::size_t position);
 
   /**
-   * Must delete external layout named "name".
+   * \brief Delete external layout named "name".
    */
   void RemoveExternalLayout(const gd::String& name);
 
@@ -694,37 +700,37 @@ class GD_CORE_API Project : public ObjectsContainer {
 ///@{
 #if defined(GD_IDE_ONLY)
   /**
-   * Return true if events functions extension called "name" exists.
+   * \brief  Check if events functions extension called "name" exists.
    */
   bool HasEventsFunctionsExtensionNamed(const gd::String& name) const;
 
   /**
-   * Return a reference to the events functions extension called "name".
+   * \brief Return a reference to the events functions extension called "name".
    */
   EventsFunctionsExtension& GetEventsFunctionsExtension(const gd::String& name);
 
   /**
-   * Return a reference to the events functions extension called "name".
+   * \brief Return a reference to the events functions extension called "name".
    */
   const EventsFunctionsExtension& GetEventsFunctionsExtension(
       const gd::String& name) const;
 
   /**
-   * Return a reference to the events functions extension at position "index" in
-   * the list
+   * \brief Return a reference to the events functions extension at position
+   * "index" in the list
    */
   EventsFunctionsExtension& GetEventsFunctionsExtension(std::size_t index);
 
   /**
-   * Return a reference to the events functions extension at position "index" in
-   * the list
+   * \brief Return a reference to the events functions extension at position
+   * "index" in the list
    */
   const EventsFunctionsExtension& GetEventsFunctionsExtension(
       std::size_t index) const;
 
   /**
-   * Return the position of the events functions extension called "name" in the
-   * list
+   * \brief Return the position of the events functions extension called "name"
+   * in the list.
    */
   std::size_t GetEventsFunctionsExtensionPosition(const gd::String& name) const;
 
@@ -736,7 +742,7 @@ class GD_CORE_API Project : public ObjectsContainer {
   void SwapEventsFunctionsExtensions(std::size_t first, std::size_t second);
 
   /**
-   * Return the number of events functions extension.
+   * \brief Returns the number of events functions extension.
    */
   std::size_t GetEventsFunctionsExtensionsCount() const;
 
@@ -759,9 +765,14 @@ class GD_CORE_API Project : public ObjectsContainer {
       std::size_t position);
 
   /**
-   * Must delete the events functions extension named "name".
+   * \brief Delete the events functions extension named "name".
    */
   void RemoveEventsFunctionsExtension(const gd::String& name);
+
+  /**
+   * \brief Remove all the events functions extensions.
+   */
+  void ClearEventsFunctionsExtensions();
 #endif
   ///@}
 
@@ -843,21 +854,10 @@ class GD_CORE_API Project : public ObjectsContainer {
   ///@{
 
   /**
-   * Return true if \a objectName can be used as name for an object.
-   *
-   * Default implementation check if objectName is only composed of a-z,A-Z,0-9
-   * or _ characters an if does not conflict with an expression.
+   * Return true if \a name is valid (can be used safely for an object,
+   * behavior, events function name, etc...).
    */
-  static bool ValidateObjectName(const gd::String& objectName);
-
-  /**
-   * Return a message that will be displayed when an invalid object name has
-   * been entered.
-   *
-   * \note This message will be displayed by the IDE into a tooltip.
-   */
-  static gd::String GetBadObjectNameWarning();
-
+  static bool ValidateName(const gd::String& name);
 ///@}
 
 /** \name External source files

Core/GDCore/Project/ResourcesManager.cpp

@@ -99,14 +99,12 @@ std::vector<gd::String> ResourcesManager::GetAllResourceNames() const {
 }
 
 #if defined(GD_IDE_ONLY)
-std::map<gd::String, gd::PropertyDescriptor> Resource::GetProperties(
-    gd::Project& project) const {
+std::map<gd::String, gd::PropertyDescriptor> Resource::GetProperties() const {
   std::map<gd::String, gd::PropertyDescriptor> nothing;
   return nothing;
 }
 
-std::map<gd::String, gd::PropertyDescriptor> ImageResource::GetProperties(
-    gd::Project& project) const {
+std::map<gd::String, gd::PropertyDescriptor> ImageResource::GetProperties() const {
   std::map<gd::String, gd::PropertyDescriptor> properties;
   properties[_("Smooth the image")]
       .SetValue(smooth ? "true" : "false")
@@ -119,8 +117,7 @@ std::map<gd::String, gd::PropertyDescriptor> ImageResource::GetProperties(
 }
 
 bool ImageResource::UpdateProperty(const gd::String& name,
-                                   const gd::String& value,
-                                   gd::Project& project) {
+                                   const gd::String& value) {
   if (name == _("Smooth the image"))
     smooth = value == "1";
   else if (name == _("Always loaded in memory"))
@@ -563,8 +560,7 @@ void JsonResource::SerializeTo(SerializerElement& element) const {
   element.SetAttribute("disablePreload", IsPreloadDisabled());
 }
 
-std::map<gd::String, gd::PropertyDescriptor> JsonResource::GetProperties(
-    gd::Project& project) const {
+std::map<gd::String, gd::PropertyDescriptor> JsonResource::GetProperties() const {
   std::map<gd::String, gd::PropertyDescriptor> properties;
   properties["disablePreload"]
       .SetValue(disablePreload ? "true" : "false")
@@ -575,8 +571,7 @@ std::map<gd::String, gd::PropertyDescriptor> JsonResource::GetProperties(
 }
 
 bool JsonResource::UpdateProperty(const gd::String& name,
-                                  const gd::String& value,
-                                  gd::Project& project) {
+                                  const gd::String& value) {
   if (name == "disablePreload") disablePreload = value == "1";
 
   return true;

Core/GDCore/Project/ResourcesManager.h

@@ -8,6 +8,7 @@
 #include <map>
 #include <memory>
 #include <vector>
+
 #include "GDCore/String.h"
 namespace gd {
 class Project;
@@ -112,8 +113,7 @@ class GD_CORE_API Resource {
    * \return a std::map with properties names as key.
    * \see gd::PropertyDescriptor
    */
-  virtual std::map<gd::String, gd::PropertyDescriptor> GetProperties(
-      gd::Project& project) const;
+  virtual std::map<gd::String, gd::PropertyDescriptor> GetProperties() const;
 
   /**
    * \brief Called when the IDE wants to update a custom property of the
@@ -122,8 +122,7 @@ class GD_CORE_API Resource {
    * \return false if the new value cannot be set
    */
   virtual bool UpdateProperty(const gd::String& name,
-                              const gd::String& value,
-                              gd::Project& project) {
+                              const gd::String& value) {
     return false;
   };
 ///@}
@@ -178,11 +177,9 @@ class GD_CORE_API ImageResource : public Resource {
 #if defined(GD_IDE_ONLY)
   virtual bool UseFile() override { return true; }
 
-  std::map<gd::String, gd::PropertyDescriptor> GetProperties(
-      gd::Project& project) const override;
+  std::map<gd::String, gd::PropertyDescriptor> GetProperties() const override;
   bool UpdateProperty(const gd::String& name,
-                      const gd::String& value,
-                      gd::Project& project) override;
+                      const gd::String& value) override;
 
   /**
    * \brief Serialize the object
@@ -315,11 +312,9 @@ class GD_CORE_API JsonResource : public Resource {
 #if defined(GD_IDE_ONLY)
   virtual bool UseFile() override { return true; }
 
-  std::map<gd::String, gd::PropertyDescriptor> GetProperties(
-      gd::Project& project) const override;
+  std::map<gd::String, gd::PropertyDescriptor> GetProperties() const override;
   bool UpdateProperty(const gd::String& name,
-                      const gd::String& value,
-                      gd::Project& project) override;
+                      const gd::String& value) override;
 
   void SerializeTo(SerializerElement& element) const override;
 #endif

Core/GDCore/Project/Variable.cpp

@@ -5,7 +5,9 @@
  */
 
 #include "GDCore/Project/Variable.h"
+
 #include <sstream>
+
 #include "GDCore/Serialization/SerializerElement.h"
 #include "GDCore/String.h"
 #include "GDCore/TinyXml/tinyxml.h"
@@ -19,9 +21,7 @@ namespace gd {
  */
 double Variable::GetValue() const {
   if (!isNumber) {
-    stringstream ss;
-    ss << str;
-    ss >> value;
+    value = str.To<double>();
     isNumber = true;
   }
 
@@ -30,9 +30,7 @@ double Variable::GetValue() const {
 
 const gd::String& Variable::GetString() const {
   if (isNumber) {
-    stringstream s;
-    s << (value);
-    str = s.str();
+    str = gd::String::From(value);
     isNumber = false;
   }
 
@@ -76,6 +74,7 @@ const Variable& Variable::GetChild(const gd::String& name) const {
 void Variable::RemoveChild(const gd::String& name) {
   if (!isStructure) return;
   children.erase(name);
+  isStructure = !children.empty();
 }
 
 bool Variable::RenameChild(const gd::String& oldName,
@@ -190,6 +189,7 @@ void Variable::RemoveRecursively(const gd::Variable& variableToRemove) {
       it++;
     }
   }
+  isStructure = !children.empty();
 }
 
 Variable::Variable(const Variable& other)

Core/GDCore/Serialization/Serializer.cpp

@@ -95,6 +95,14 @@ void Serializer::FromXML(SerializerElement& element,
 }
 #endif
 
+gd::String Serializer::ToEscapedXMLString(const gd::String& str) {
+  return str.FindAndReplace("&", "&")
+      .FindAndReplace("'", "'")
+      .FindAndReplace("\"", """)
+      .FindAndReplace("<", "&lt;")
+      .FindAndReplace(">", "&gt;");
+}
+
 namespace {
 
 /**

Core/GDCore/Serialization/Serializer.h

@@ -27,14 +27,26 @@ class GD_CORE_API Serializer {
   static void FromXML(SerializerElement& element,
                       const TiXmlElement* xmlElement);
 #endif
+  /**
+   * \brief Escape a string for inclusion in a XML tag
+   */
+  static gd::String ToEscapedXMLString(const gd::String& str);
   ///@}
 
   /** \name JSON serialization.
    * Serialize a SerializerElement from/to JSON.
    */
   ///@{
+  /**
+   * \brief Serialize a gd::SerializerElement to a JSON string.
+   */
   static gd::String ToJSON(const SerializerElement& element);
+
   static SerializerElement FromJSON(const std::string& json);
+
+  /**
+   * \brief Parse a JSON string and returns a gd::SerializerElement for it.
+   */
   static SerializerElement FromJSON(const gd::String& json) {
     return FromJSON(json.ToUTF8());
   }

Core/GDCore/Tools/Localization.cpp

@@ -25,11 +25,11 @@ gd::String GetTranslation(const char* str) {  // TODO: Inline?
         // }
         ensureCache.prepare();
 
-        var translatedStr = getTranslation(Pointer_stringify($0));
+        var translatedStr = getTranslation(UTF8ToString($0));
         return ensureString(translatedStr);
       },
       str);
   return gd::String(translatedStr);  // TODO: Is copying necessary?
 }
 }  // namespace gd
-#endif
+#endif

Core/GDCore/Tools/SPtrList.inl

@@ -90,7 +90,7 @@ template <typename T>
 void SPtrList<T>::Init(const gd::SPtrList<T>& other) {
   elements.clear();
   for (size_t i = 0; i < other.elements.size(); ++i)
-    elements.push_back(std::make_shared<T>(other[i]));
+    elements.push_back(CloneRememberingOriginalElement(other.elements[i]));
 }
 
 }  // namespace gd

Core/GDCore/Tools/UUID/UUID.h

@@ -0,0 +1,24 @@
+/*
+ * GDevelop Core
+ * Copyright 2008-present Florian Rival (Florian.Rival@gmail.com). All rights
+ * reserved. This project is released under the MIT License.
+ */
+
+#ifndef GDCORE_TOOLS_UUID_UUID_H
+#define GDCORE_TOOLS_UUID_UUID_H
+
+#include "GDCore/String.h"
+#include "sole.h"
+
+namespace gd {
+namespace UUID {
+
+/**
+ * Generate a random UUID v4
+ */
+inline gd::String MakeUuid4() { return gd::String::From(sole::uuid4()); }
+
+}  // namespace UUID
+}  // namespace gd
+
+#endif

Core/GDCore/Tools/UUID/sole.h

@@ -0,0 +1,249 @@
+/**
+ * Modified version of sole (https://github.com/r-lyeh-archived/sole) C++11 library
+ * to only generate UUID v4.
+ *
+ * Sole is a lightweight C++11 library to generate universally unique identificators.
+ * Sole provides interface for UUID versions 0, 1 and 4.
+ *
+ * https://github.com/r-lyeh/sole
+ * Copyright (c) 2013,2014,2015 r-lyeh. zlib/libpng licensed.
+ *
+ * Based on code by Dmitri Bouianov, Philip O'Toole, Poco C++ libraries and anonymous
+ * code found on the net. Thanks guys!
+ *
+ * Theory: (see Hoylen's answer at [1])
+ * - UUID version 1 (48-bit MAC address + 60-bit clock with a resolution of 100ns)
+ *   Clock wraps in 3603 A.D.
+ *   Up to 10000000 UUIDs per second.
+ *   MAC address revealed.
+ *
+ * - UUID Version 4 (122-bits of randomness)
+ *   See [2] or other analysis that describe how very unlikely a duplicate is.
+ *
+ * - Use v1 if you need to sort or classify UUIDs per machine.
+ *   Use v1 if you are worried about leaving it up to probabilities (e.g. your are the
+ *   type of person worried about the earth getting destroyed by a large asteroid in your
+ *   lifetime). Just use a v1 and it is guaranteed to be unique till 3603 AD.
+ *
+ * - Use v4 if you are worried about security issues and determinism. That is because
+ *   v1 UUIDs reveal the MAC address of the machine it was generated on and they can be
+ *   predictable. Use v4 if you need more than 10 million uuids per second, or if your
+ *   application wants to live past 3603 A.D.
+ * Additionally a custom UUID v0 is provided:
+ * - 16-bit PID + 48-bit MAC address + 60-bit clock with a resolution of 100ns since Unix epoch
+ * - Format is EPOCH_LOW-EPOCH_MID-VERSION(0)|EPOCH_HI-PID-MAC
+ * - Clock wraps in 3991 A.D.
+ * - Up to 10000000 UUIDs per second.
+ * - MAC address and PID revealed.
+ * References:
+ * - [1] http://stackoverflow.com/questions/1155008/how-unique-is-uuid
+ * - [2] http://en.wikipedia.org/wiki/UUID#Random%5FUUID%5Fprobability%5Fof%5Fduplicates
+ * - http://en.wikipedia.org/wiki/Universally_unique_identifier
+ * - http://en.cppreference.com/w/cpp/numeric/random/random_device
+ * - http://www.itu.int/ITU-T/asn1/uuid.html f81d4fae-7dec-11d0-a765-00a0c91e6bf6
+ * - rlyeh ~~ listening to Hedon Cries / Until The Sun Goes up
+ */
+
+//////////////////////////////////////////////////////////////////////////////////////
+
+#pragma once
+#include <stdint.h>
+#include <stdio.h>     // for size_t; should be stddef.h instead; however, clang+archlinux fails when compiling it (@Travis-Ci)
+#include <sys/types.h> // for uint32_t; should be stdint.h instead; however, GCC 5 on OSX fails when compiling it (See issue #11)
+#include <functional>
+#include <string>
+
+// public API
+
+namespace sole
+{
+    // 128-bit basic UUID type that allows comparison and sorting.
+    // Use .str() for printing and .pretty() for pretty printing.
+    // Also, ostream friendly.
+    struct uuid
+    {
+        uint64_t ab;
+        uint64_t cd;
+
+        bool operator==( const uuid &other ) const;
+        bool operator!=( const uuid &other ) const;
+        bool operator <( const uuid &other ) const;
+
+        std::string base62() const;
+        std::string str() const;
+
+        template<typename ostream>
+        inline friend ostream &operator<<( ostream &os, const uuid &self ) {
+            return os << self.str(), os;
+        }
+    };
+
+    // Generators
+    uuid uuid4(); // UUID v4, pros: anonymous, fast; con: uuids "can clash"
+
+    // Rebuilders
+    uuid rebuild( uint64_t ab, uint64_t cd );
+    uuid rebuild( const std::string &uustr );
+}
+
+#ifdef _MSC_VER
+#pragma warning(push)
+#pragma warning(disable:4127)
+#endif
+
+namespace std {
+    template<>
+    struct hash< sole::uuid > {
+    public:
+        // hash functor: hash uuid to size_t value by pseudorandomizing transform
+        size_t operator()( const sole::uuid &uuid ) const {
+            if( sizeof(size_t) > 4 ) {
+                return size_t( uuid.ab ^ uuid.cd );
+            } else {
+                uint64_t hash64 = uuid.ab ^ uuid.cd;
+                return size_t( uint32_t( hash64 >> 32 ) ^ uint32_t( hash64 ) );
+            }
+        }
+    };
+}
+
+#ifdef _MSC_VER
+#pragma warning(pop)
+#endif
+
+// implementation
+
+#include <memory.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <time.h>
+
+#include <cstring>
+#include <ctime>
+
+#include <iomanip>
+#include <random>
+#include <sstream>
+#include <string>
+#include <vector>
+
+#include <unistd.h>
+
+inline bool sole::uuid::operator==( const sole::uuid &other ) const {
+    return ab == other.ab && cd == other.cd;
+}
+inline bool sole::uuid::operator!=( const sole::uuid &other ) const {
+    return !operator==(other);
+}
+inline bool sole::uuid::operator<( const sole::uuid &other ) const {
+    if( ab < other.ab ) return true;
+    if( ab > other.ab ) return false;
+    if( cd < other.cd ) return true;
+    return false;
+}
+
+namespace sole {
+
+    inline std::string uuid::str() const {
+        std::stringstream ss;
+        ss << std::hex << std::nouppercase << std::setfill('0');
+
+        uint32_t a = (ab >> 32);
+        uint32_t b = (ab & 0xFFFFFFFF);
+        uint32_t c = (cd >> 32);
+        uint32_t d = (cd & 0xFFFFFFFF);
+
+        ss << std::setw(8) << (a) << '-';
+        ss << std::setw(4) << (b >> 16) << '-';
+        ss << std::setw(4) << (b & 0xFFFF) << '-';
+        ss << std::setw(4) << (c >> 16 ) << '-';
+        ss << std::setw(4) << (c & 0xFFFF);
+        ss << std::setw(8) << d;
+
+        return ss.str();
+    }
+
+    inline std::string uuid::base62() const {
+        int base62len = 10 + 26 + 26;
+        const char base62[] =
+            "0123456789"
+            "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+            "abcdefghijklmnopqrstuvwxyz";
+        char res[24], *end = &res[24]; *(--end) = '\0';
+        uint64_t rem, AB = ab, CD = cd;
+        do {
+            rem = CD % base62len;
+            *--end = base62[int(rem)];
+            CD /= base62len;
+        } while (CD > 0);
+        *--end = '-';
+        do {
+            rem = AB % base62len;
+            *--end = base62[int(rem)];
+            AB /= base62len;
+        } while (AB > 0);
+        return end;
+    }
+
+    //////////////////////////////////////////////////////////////////////////////////////
+    // UUID implementations
+
+    inline uuid uuid4() {
+        static std::random_device rd;
+        static std::uniform_int_distribution<uint64_t> dist(0, (uint64_t)(~0));
+
+        uuid my;
+
+        my.ab = dist(rd);
+        my.cd = dist(rd);
+
+        my.ab = (my.ab & 0xFFFFFFFFFFFF0FFFULL) | 0x0000000000004000ULL;
+        my.cd = (my.cd & 0x3FFFFFFFFFFFFFFFULL) | 0x8000000000000000ULL;
+
+        return my;
+    }
+
+    inline uuid rebuild( uint64_t ab, uint64_t cd ) {
+        uuid u;
+        u.ab = ab; u.cd = cd;
+        return u;
+    }
+
+    inline uuid rebuild( const std::string &uustr ) {
+        char sep;
+        uint64_t a,b,c,d,e;
+        uuid u = { 0, 0 };
+        auto idx = uustr.find_first_of("-");
+        if( idx != std::string::npos ) {
+            // single separator, base62 notation
+            if( uustr.find_first_of("-",idx+1) == std::string::npos ) {
+                auto rebase62 = [&]( const char *input, size_t limit ) -> uint64_t {
+                    int base62len = 10 + 26 + 26;
+                    auto strpos = []( char ch ) -> size_t {
+                        if( ch >= 'a' ) return ch - 'a' + 10 + 26;
+                        if( ch >= 'A' ) return ch - 'A' + 10;
+                        return ch - '0';
+                    };
+                    uint64_t res = strpos( input[0] );
+                    for( size_t i = 1; i < limit; ++i )
+                        res = base62len * res + strpos( input[i] );
+                    return res;
+                };
+                u.ab = rebase62( &uustr[0], idx );
+                u.cd = rebase62( &uustr[idx+1], uustr.size() - (idx+1) );
+            }
+            // else classic hex notation
+            else {
+                std::stringstream ss( uustr );
+                if( ss >> std::hex >> a >> sep >> b >> sep >> c >> sep >> d >> sep >> e ) {
+                    if( ss.eof() ) {
+                        u.ab = (a << 32) | (b << 16) | c;
+                        u.cd = (d << 48) | e;
+                    }
+                }
+            }
+        }
+        return u;
+    }
+
+} // ::sole

Core/tests/DummyPlatform.cpp

@@ -14,6 +14,9 @@
 
 void SetupProjectWithDummyPlatform(gd::Project &project,
                                    gd::Platform &platform) {
+  // Don't show extension loading logs for tests (too verbose).
+  platform.EnableExtensionLoadingLogs(false);
+
   std::shared_ptr<gd::PlatformExtension> baseObjectExtension =
       std::shared_ptr<gd::PlatformExtension>(new gd::PlatformExtension);
   baseObjectExtension->SetExtensionInformation(

Core/tests/ExpressionCompletionFinder.cpp

@@ -0,0 +1,307 @@
+/*
+ * GDevelop Core
+ * Copyright 2008-2016 Florian Rival (Florian.Rival@gmail.com). All rights
+ * reserved. This project is released under the MIT License.
+ */
+#include "GDCore/IDE/Events/ExpressionCompletionFinder.h"
+#include "DummyPlatform.h"
+#include "GDCore/Events/Parsers/ExpressionParser2.h"
+#include "GDCore/Extensions/Platform.h"
+#include "GDCore/Extensions/PlatformExtension.h"
+#include "GDCore/Project/Layout.h"
+#include "GDCore/Project/Project.h"
+#include "catch.hpp"
+
+TEST_CASE("ExpressionCompletionFinder", "[common][events]") {
+  gd::Project project;
+  gd::Platform platform;
+  SetupProjectWithDummyPlatform(project, platform);
+  auto& layout1 = project.InsertNewLayout("Layout1", 0);
+
+  gd::ExpressionParser2 parser(platform, project, layout1);
+
+  auto getCompletionsFor = [&](
+      const gd::String& type, const gd::String& expression, size_t location) {
+    auto node = parser.ParseExpression(type, expression);
+    REQUIRE(node != nullptr);
+    return gd::ExpressionCompletionFinder::GetCompletionDescriptionsFor(
+        *node, location);
+  };
+
+  const std::vector<gd::ExpressionCompletionDescription>
+      expectedEmptyCompletions;
+
+  SECTION("Identifier") {
+    SECTION("Object or expression completions when type is string") {
+      std::vector<gd::ExpressionCompletionDescription> expectedCompletions{
+          gd::ExpressionCompletionDescription::ForObject("string", "My"),
+          gd::ExpressionCompletionDescription::ForExpression("string", "My")};
+      REQUIRE(getCompletionsFor("string", "My", 0) == expectedCompletions);
+      REQUIRE(getCompletionsFor("string", "My", 1) == expectedCompletions);
+      REQUIRE(getCompletionsFor("string", "My", 2) == expectedEmptyCompletions);
+    }
+    SECTION("Object or expression completions when type is number") {
+      std::vector<gd::ExpressionCompletionDescription> expectedCompletions{
+          gd::ExpressionCompletionDescription::ForObject("number", "My"),
+          gd::ExpressionCompletionDescription::ForExpression("number", "My")};
+      REQUIRE(getCompletionsFor("number", "My", 0) == expectedCompletions);
+      REQUIRE(getCompletionsFor("number", "My", 1) == expectedCompletions);
+      REQUIRE(getCompletionsFor("number", "My", 2) == expectedEmptyCompletions);
+    }
+    SECTION("Object when type is an object") {
+      std::vector<gd::ExpressionCompletionDescription> expectedCompletions{
+          gd::ExpressionCompletionDescription::ForObject("object", "My")};
+      REQUIRE(getCompletionsFor("object", "My", 0) == expectedCompletions);
+      REQUIRE(getCompletionsFor("object", "My", 1) == expectedCompletions);
+      REQUIRE(getCompletionsFor("object", "My", 2) == expectedEmptyCompletions);
+    }
+
+    SECTION("Object when type is an object (alternate type)") {
+      // Also test alternate types also considered as objects (but that can
+      // result in different code generation):
+      std::vector<gd::ExpressionCompletionDescription> expectedCompletions{
+          gd::ExpressionCompletionDescription::ForObject("objectPtr", "My")};
+      REQUIRE(getCompletionsFor("objectPtr", "My", 0) == expectedCompletions);
+      REQUIRE(getCompletionsFor("objectPtr", "My", 1) == expectedCompletions);
+      REQUIRE(getCompletionsFor("objectPtr", "My", 2) ==
+              expectedEmptyCompletions);
+    }
+  }
+  SECTION("Operator (number)") {
+    std::vector<gd::ExpressionCompletionDescription> expectedCompletions{
+        gd::ExpressionCompletionDescription::ForObject("number", ""),
+        gd::ExpressionCompletionDescription::ForExpression("number", "")};
+    REQUIRE(getCompletionsFor("number", "1 + ", 1) == expectedCompletions);
+    REQUIRE(getCompletionsFor("number", "1 + ", 2) == expectedCompletions);
+    REQUIRE(getCompletionsFor("number", "1 + ", 3) == expectedCompletions);
+  }
+  SECTION("Operator (string)") {
+    std::vector<gd::ExpressionCompletionDescription> expectedCompletions{
+        gd::ExpressionCompletionDescription::ForObject("string", ""),
+        gd::ExpressionCompletionDescription::ForExpression("string", "")};
+    REQUIRE(getCompletionsFor("string", "\"a\" + ", 3) == expectedCompletions);
+    REQUIRE(getCompletionsFor("string", "\"a\" + ", 4) == expectedCompletions);
+    REQUIRE(getCompletionsFor("string", "\"a\" + ", 5) == expectedCompletions);
+  }
+
+  SECTION("Free function") {
+    SECTION("Test 1") {
+      std::vector<gd::ExpressionCompletionDescription> expectedCompletions{
+          gd::ExpressionCompletionDescription::ForExpression("string",
+                                                             "Function")};
+      std::vector<gd::ExpressionCompletionDescription>
+          expectedExactCompletions{
+              gd::ExpressionCompletionDescription::ForExpression("string",
+                                                                 "Function")
+                  .SetIsExact(true)};
+      REQUIRE(getCompletionsFor("string", "Function(", 0) ==
+              expectedCompletions);
+      REQUIRE(getCompletionsFor("string", "Function(", 1) ==
+              expectedCompletions);
+      REQUIRE(getCompletionsFor("string", "Function(", 7) ==
+              expectedCompletions);
+      REQUIRE(getCompletionsFor("string", "Function(", 8) ==
+              expectedExactCompletions);
+      REQUIRE(getCompletionsFor("string", "Function(", 9) ==
+              expectedEmptyCompletions);
+      REQUIRE(getCompletionsFor("string", "Function()", 9) ==
+              expectedExactCompletions);
+    }
+    SECTION("Unknown function, test with arguments") {
+      REQUIRE(getCompletionsFor("string", "Function(1", 9) ==
+              expectedEmptyCompletions);
+      REQUIRE(getCompletionsFor("string", "Function(\"", 9) ==
+              expectedEmptyCompletions);
+
+      std::vector<gd::ExpressionCompletionDescription> expectedCompletions{
+          gd::ExpressionCompletionDescription::ForObject("unknown", "a"),
+          gd::ExpressionCompletionDescription::ForExpression("unknown", "a")};
+      REQUIRE(getCompletionsFor("string", "Function(a", 9) ==
+              expectedCompletions);
+    }
+    SECTION("Function with a Variable as argument") {
+      std::vector<gd::ExpressionCompletionDescription> expectedCompletions{
+          gd::ExpressionCompletionDescription::ForVariable("scenevar",
+                                                           "myVar")};
+      REQUIRE(getCompletionsFor("number",
+                                "MyExtension::GetVariableAsNumber(myVar",
+                                33) == expectedCompletions);
+    }
+  }
+
+  SECTION("Partial object or behavior function") {
+    SECTION("Test 1") {
+      std::vector<gd::ExpressionCompletionDescription>
+          expectedObjectCompletions{
+              gd::ExpressionCompletionDescription::ForObject("string",
+                                                             "MyObject")};
+      std::vector<gd::ExpressionCompletionDescription>
+          expectedBehaviorOrFunctionCompletions{
+              gd::ExpressionCompletionDescription::ForBehavior("Func",
+                                                               "MyObject"),
+              gd::ExpressionCompletionDescription::ForExpression(
+                  "string", "Func", "MyObject")};
+      REQUIRE(getCompletionsFor("string", "MyObject.Func", 0) ==
+              expectedObjectCompletions);
+      REQUIRE(getCompletionsFor("string", "MyObject.Func", 7) ==
+              expectedObjectCompletions);
+      REQUIRE(getCompletionsFor("string", "MyObject.Func", 8) ==
+              expectedBehaviorOrFunctionCompletions);
+      REQUIRE(getCompletionsFor("string", "MyObject.Func", 9) ==
+              expectedBehaviorOrFunctionCompletions);
+      REQUIRE(getCompletionsFor("string", "MyObject.Func", 12) ==
+              expectedBehaviorOrFunctionCompletions);
+      REQUIRE(getCompletionsFor("string", "MyObject.Func", 13) ==
+              expectedEmptyCompletions);
+    }
+  }
+
+  SECTION("Object function") {
+    SECTION("Test 1") {
+      std::vector<gd::ExpressionCompletionDescription>
+          expectedObjectCompletions{
+              gd::ExpressionCompletionDescription::ForObject("string",
+                                                             "MyObject")};
+      std::vector<gd::ExpressionCompletionDescription>
+          expectedBehaviorOrFunctionCompletions{
+              gd::ExpressionCompletionDescription::ForBehavior("Func",
+                                                               "MyObject"),
+              gd::ExpressionCompletionDescription::ForExpression(
+                  "string", "Func", "MyObject")};
+      std::vector<gd::ExpressionCompletionDescription>
+          expectedExactFunctionCompletions{
+              gd::ExpressionCompletionDescription::ForExpression(
+                  "string", "Func", "MyObject")
+                  .SetIsExact(true)};
+      REQUIRE(getCompletionsFor("string", "MyObject.Func(", 0) ==
+              expectedObjectCompletions);
+      REQUIRE(getCompletionsFor("string", "MyObject.Func(", 7) ==
+              expectedObjectCompletions);
+      REQUIRE(getCompletionsFor("string", "MyObject.Func(", 8) ==
+              expectedBehaviorOrFunctionCompletions);
+      REQUIRE(getCompletionsFor("string", "MyObject.Func(", 9) ==
+              expectedBehaviorOrFunctionCompletions);
+      REQUIRE(getCompletionsFor("string", "MyObject.Func(", 12) ==
+              expectedBehaviorOrFunctionCompletions);
+      REQUIRE(getCompletionsFor("string", "MyObject.Func(", 13) ==
+              expectedExactFunctionCompletions);
+      REQUIRE(getCompletionsFor("string", "MyObject.Func(", 14) ==
+              expectedEmptyCompletions);
+      REQUIRE(getCompletionsFor("string", "MyObject.Func()", 14) ==
+              expectedExactFunctionCompletions);
+    }
+  }
+
+  SECTION("Partial behavior function") {
+    SECTION("Test 1") {
+      std::vector<gd::ExpressionCompletionDescription>
+          expectedObjectCompletions{
+              gd::ExpressionCompletionDescription::ForObject("string",
+                                                             "MyObject")};
+      std::vector<gd::ExpressionCompletionDescription>
+          expectedBehaviorCompletions{
+              gd::ExpressionCompletionDescription::ForBehavior("MyBehavior",
+                                                               "MyObject")};
+      std::vector<gd::ExpressionCompletionDescription>
+          expectedFunctionCompletions{
+              gd::ExpressionCompletionDescription::ForExpression(
+                  "string", "Func", "MyObject", "MyBehavior")};
+      REQUIRE(getCompletionsFor("string", "MyObject.MyBehavior::Func", 0) ==
+              expectedObjectCompletions);
+      REQUIRE(getCompletionsFor("string", "MyObject.MyBehavior::Func", 7) ==
+              expectedObjectCompletions);
+      REQUIRE(getCompletionsFor("string", "MyObject.MyBehavior::Func", 8) ==
+              expectedBehaviorCompletions);
+      REQUIRE(getCompletionsFor("string", "MyObject.MyBehavior::Func", 9) ==
+              expectedBehaviorCompletions);
+      REQUIRE(getCompletionsFor("string", "MyObject.MyBehavior::Func", 18) ==
+              expectedBehaviorCompletions);
+      REQUIRE(getCompletionsFor("string", "MyObject.MyBehavior::Func", 19) ==
+              expectedFunctionCompletions);
+      REQUIRE(getCompletionsFor("string", "MyObject.MyBehavior::Func", 20) ==
+              expectedFunctionCompletions);
+      REQUIRE(getCompletionsFor("string", "MyObject.MyBehavior::Func", 21) ==
+              expectedFunctionCompletions);
+      REQUIRE(getCompletionsFor("string", "MyObject.MyBehavior::Func", 23) ==
+              expectedFunctionCompletions);
+    }
+    SECTION("Test 2") {
+      std::vector<gd::ExpressionCompletionDescription>
+          expectedObjectCompletions{
+              gd::ExpressionCompletionDescription::ForObject("string",
+                                                             "MyObject")};
+      std::vector<gd::ExpressionCompletionDescription>
+          expectedBehaviorCompletions{
+              gd::ExpressionCompletionDescription::ForBehavior("MyBehavior",
+                                                               "MyObject")};
+      std::vector<gd::ExpressionCompletionDescription>
+          expectedFunctionCompletions{
+              gd::ExpressionCompletionDescription::ForExpression(
+                  "string", "", "MyObject", "MyBehavior")};
+      REQUIRE(getCompletionsFor("string", "MyObject.MyBehavior::", 0) ==
+              expectedObjectCompletions);
+      REQUIRE(getCompletionsFor("string", "MyObject.MyBehavior::", 7) ==
+              expectedObjectCompletions);
+      REQUIRE(getCompletionsFor("string", "MyObject.MyBehavior::", 8) ==
+              expectedBehaviorCompletions);
+      REQUIRE(getCompletionsFor("string", "MyObject.MyBehavior::", 9) ==
+              expectedBehaviorCompletions);
+      REQUIRE(getCompletionsFor("string", "MyObject.MyBehavior::", 18) ==
+              expectedBehaviorCompletions);
+      REQUIRE(getCompletionsFor("string", "MyObject.MyBehavior::", 19) ==
+              expectedFunctionCompletions);
+      REQUIRE(getCompletionsFor("string", "MyObject.MyBehavior::", 20) ==
+              expectedFunctionCompletions);
+    }
+  }
+
+  SECTION("Behavior function") {
+    SECTION("Test 1") {
+      std::vector<gd::ExpressionCompletionDescription>
+          expectedObjectCompletions{
+              gd::ExpressionCompletionDescription::ForObject("string",
+                                                             "MyObject")};
+      std::vector<gd::ExpressionCompletionDescription>
+          expectedBehaviorCompletions{
+              gd::ExpressionCompletionDescription::ForBehavior("MyBehavior",
+                                                               "MyObject")};
+      std::vector<gd::ExpressionCompletionDescription>
+          expectedFunctionCompletions{
+              gd::ExpressionCompletionDescription::ForExpression(
+                  "string", "Func", "MyObject", "MyBehavior")};
+      std::vector<gd::ExpressionCompletionDescription>
+          expectedExactFunctionCompletions{
+              gd::ExpressionCompletionDescription::ForExpression(
+                  "string", "Func", "MyObject", "MyBehavior")
+                  .SetIsExact(true)};
+      REQUIRE(getCompletionsFor("string", "MyObject.MyBehavior::Func(", 0) ==
+              expectedObjectCompletions);
+      REQUIRE(getCompletionsFor("string", "MyObject.MyBehavior::Func(", 7) ==
+              expectedObjectCompletions);
+      REQUIRE(getCompletionsFor("string", "MyObject.MyBehavior::Func(", 8) ==
+              expectedBehaviorCompletions);
+      REQUIRE(getCompletionsFor("string", "MyObject.MyBehavior::Func(", 9) ==
+              expectedBehaviorCompletions);
+      REQUIRE(getCompletionsFor("string", "MyObject.MyBehavior::Func(", 18) ==
+              expectedBehaviorCompletions);
+      REQUIRE(getCompletionsFor("string", "MyObject.MyBehavior::Func(", 19) ==
+              expectedFunctionCompletions);
+      REQUIRE(getCompletionsFor("string", "MyObject.MyBehavior::Func(", 20) ==
+              expectedFunctionCompletions);
+      REQUIRE(getCompletionsFor("string", "MyObject.MyBehavior::Func(", 21) ==
+              expectedFunctionCompletions);
+      REQUIRE(getCompletionsFor("string", "MyObject.MyBehavior::Func(", 22) ==
+              expectedFunctionCompletions);
+      REQUIRE(getCompletionsFor("string", "MyObject.MyBehavior::Func(", 23) ==
+              expectedFunctionCompletions);
+      REQUIRE(getCompletionsFor("string", "MyObject.MyBehavior::Func(", 24) ==
+              expectedFunctionCompletions);
+      REQUIRE(getCompletionsFor("string", "MyObject.MyBehavior::Func(", 25) ==
+              expectedExactFunctionCompletions);
+      REQUIRE(getCompletionsFor("string", "MyObject.MyBehavior::Func(", 26) ==
+              expectedEmptyCompletions);
+      REQUIRE(getCompletionsFor("string", "MyObject.MyBehavior::Func()", 26) ==
+              expectedExactFunctionCompletions);
+    }
+  }
+}

Core/tests/ExpressionNodeLocationFinder.cpp

@@ -0,0 +1,382 @@
+/*
+ * GDevelop Core
+ * Copyright 2008-2016 Florian Rival (Florian.Rival@gmail.com). All rights
+ * reserved. This project is released under the MIT License.
+ */
+#include "GDCore/IDE/Events/ExpressionNodeLocationFinder.h"
+#include "DummyPlatform.h"
+#include "GDCore/Events/Parsers/ExpressionParser2.h"
+#include "GDCore/Extensions/Platform.h"
+#include "GDCore/Extensions/PlatformExtension.h"
+#include "GDCore/Project/Layout.h"
+#include "GDCore/Project/Project.h"
+#include "catch.hpp"
+
+template <class TNode>
+bool CheckNodeAtLocationIs(gd::ExpressionParser2& parser,
+                           const gd::String& type,
+                           const gd::String& expression,
+                           size_t searchPosition) {
+  auto node = parser.ParseExpression(type, expression);
+  REQUIRE(node != nullptr);
+  return dynamic_cast<TNode*>(
+             gd::ExpressionNodeLocationFinder::GetNodeAtPosition(
+                 *node, searchPosition)) != nullptr;
+}
+
+bool CheckNoNodeAtLocation(gd::ExpressionParser2& parser,
+                           const gd::String& type,
+                           const gd::String& expression,
+                           size_t searchPosition) {
+  auto node = parser.ParseExpression(type, expression);
+  REQUIRE(node != nullptr);
+  return gd::ExpressionNodeLocationFinder::GetNodeAtPosition(
+             *node, searchPosition) == nullptr;
+}
+
+TEST_CASE("ExpressionNodeLocationFinder", "[common][events]") {
+  gd::Project project;
+  gd::Platform platform;
+  SetupProjectWithDummyPlatform(project, platform);
+  auto& layout1 = project.InsertNewLayout("Layout1", 0);
+  layout1.InsertNewObject(project, "MyExtension::Sprite", "MySpriteObject", 0);
+
+  gd::ExpressionParser2 parser(platform, project, layout1);
+
+  SECTION("Empty expressions") {
+    SECTION("Test 1") {
+      REQUIRE(CheckNodeAtLocationIs<gd::EmptyNode>(
+                  parser, "string", "", 0) == true);
+      REQUIRE(CheckNoNodeAtLocation(parser, "string", "", 1) ==
+              true);
+    }
+    SECTION("Test 2") {
+      REQUIRE(CheckNoNodeAtLocation(parser, "string", " ", 0) ==
+              true);
+      REQUIRE(CheckNodeAtLocationIs<gd::EmptyNode>(
+                  parser, "string", " ", 1) == true);
+      REQUIRE(CheckNoNodeAtLocation(parser, "string", " ", 2) ==
+              true);
+    }
+  }
+
+  SECTION("Valid text") {
+    SECTION("Test 1") {
+      REQUIRE(CheckNodeAtLocationIs<gd::TextNode>(
+                  parser, "string", "\"Hello world\"", 0) == true);
+    }
+    SECTION("Test 2") {
+      REQUIRE(CheckNodeAtLocationIs<gd::TextNode>(
+                  parser, "string", "\"Hello world\"", 1) == true);
+    }
+    SECTION("Test 3") {
+      REQUIRE(CheckNodeAtLocationIs<gd::TextNode>(
+                  parser, "string", "\"Hello world\"", 12) == true);
+    }
+    SECTION("Test 4") {
+      REQUIRE(CheckNoNodeAtLocation(parser, "string", "\"Hello world\"", 13) ==
+              true);
+    }
+    SECTION("Test 5") {
+      REQUIRE(CheckNoNodeAtLocation(parser, "string", "\"Hello world\"", 99) ==
+              true);
+    }
+  }
+  SECTION("Valid text operators") {
+    SECTION("Test 1") {
+      REQUIRE(CheckNodeAtLocationIs<gd::TextNode>(
+                  parser, "string", "\"Hello \" + \"World\"", 1) == true);
+      REQUIRE(CheckNodeAtLocationIs<gd::OperatorNode>(
+                  parser, "string", "\"Hello \" + \"World\"", 8) == true);
+      REQUIRE(CheckNodeAtLocationIs<gd::TextNode>(
+                  parser, "string", "\"Hello \" + \"World\"", 15) == true);
+    }
+  }
+  SECTION("Invalid texts") {
+    REQUIRE(CheckNodeAtLocationIs<gd::TextNode>(parser, "string", "\"", 0) ==
+            true);
+    REQUIRE(CheckNoNodeAtLocation(parser, "string", "\"", 1) == true);
+    REQUIRE(CheckNodeAtLocationIs<gd::TextNode>(parser, "string", "\"a", 1) ==
+            true);
+  }
+
+  SECTION("Invalid parenthesis") {
+    REQUIRE(CheckNodeAtLocationIs<gd::SubExpressionNode>(
+                parser, "string", "((\"hello\"", 1) == true);
+    REQUIRE(CheckNodeAtLocationIs<gd::TextNode>(
+                parser, "string", "((\"hello\"", 2) == true);
+  }
+
+  SECTION("Invalid text operators") {
+    SECTION("Test 1") {
+      REQUIRE(CheckNodeAtLocationIs<gd::TextNode>(
+                  parser, "string", "\"Hello \" - \"World\"", 0) == true);
+      REQUIRE(CheckNodeAtLocationIs<gd::TextNode>(
+                  parser, "string", "\"Hello \" - \"World\"", 1) == true);
+      REQUIRE(CheckNodeAtLocationIs<gd::OperatorNode>(
+                  parser, "string", "\"Hello \" / \"World\"", 8) == true);
+      REQUIRE(CheckNodeAtLocationIs<gd::TextNode>(
+                  parser, "string", "\"Hello \" * \"World\"", 15) == true);
+    }
+  }
+
+  SECTION("Valid unary operators") {
+    SECTION("Test 1") {
+      REQUIRE(CheckNodeAtLocationIs<gd::UnaryOperatorNode>(
+                  parser, "number", "-123", 0) == true);
+      REQUIRE(CheckNodeAtLocationIs<gd::UnaryOperatorNode>(
+                  parser, "number", "+123", 0) == true);
+      REQUIRE(CheckNodeAtLocationIs<gd::NumberNode>(
+                  parser, "number", "-123", 1) == true);
+      REQUIRE(CheckNodeAtLocationIs<gd::NumberNode>(
+                  parser, "number", "-123", 2) == true);
+      REQUIRE(CheckNodeAtLocationIs<gd::NumberNode>(
+                  parser, "number", "-123", 3) == true);
+      REQUIRE(CheckNoNodeAtLocation(parser, "number", "-123", 4) == true);
+    }
+    SECTION("Test 2") {
+      REQUIRE(CheckNodeAtLocationIs<gd::UnaryOperatorNode>(
+                  parser, "number", "-+-123", 0) == true);
+      REQUIRE(CheckNodeAtLocationIs<gd::UnaryOperatorNode>(
+                  parser, "number", "-+-123", 1) == true);
+      REQUIRE(CheckNodeAtLocationIs<gd::UnaryOperatorNode>(
+                  parser, "number", "-+-123", 2) == true);
+      REQUIRE(CheckNodeAtLocationIs<gd::NumberNode>(
+                  parser, "number", "-+-123", 3) == true);
+    }
+  }
+
+  SECTION("Invalid number operators") {
+    SECTION("Test 1") {
+      REQUIRE(CheckNodeAtLocationIs<gd::NumberNode>(
+                  parser, "number", "12 ! 34", 0) == true);
+      REQUIRE(CheckNodeAtLocationIs<gd::NumberNode>(
+                  parser, "number", "12 ! 34", 1) == true);
+      REQUIRE(CheckNodeAtLocationIs<gd::OperatorNode>(
+                  parser, "number", "12 ! 34", 2) == true);
+      REQUIRE(CheckNodeAtLocationIs<gd::OperatorNode>(
+                  parser, "number", "12 ! 34", 3) == true);
+      REQUIRE(CheckNodeAtLocationIs<gd::OperatorNode>(
+                  parser, "number", "12 ! 34", 4) == true);
+      REQUIRE(CheckNodeAtLocationIs<gd::NumberNode>(
+                  parser, "number", "12 ! 34", 5) == true);
+      REQUIRE(CheckNodeAtLocationIs<gd::NumberNode>(
+                  parser, "number", "12 ! 34", 6) == true);
+    }
+    SECTION("Test 2") {
+      REQUIRE(CheckNodeAtLocationIs<gd::NumberNode>(
+                  parser, "number", "1 / /2", 0) == true);
+      REQUIRE(CheckNodeAtLocationIs<gd::OperatorNode>(
+                  parser, "number", "1 / /2", 1) == true);
+      REQUIRE(CheckNodeAtLocationIs<gd::OperatorNode>(
+                  parser, "number", "1 / /2", 2) == true);
+      REQUIRE(CheckNodeAtLocationIs<gd::OperatorNode>(
+                  parser, "number", "1 / /2", 3) == true);
+      REQUIRE(CheckNodeAtLocationIs<gd::EmptyNode>(
+                  parser, "number", "1 / /2", 4) == true);
+      REQUIRE(CheckNodeAtLocationIs<gd::EmptyNode>(
+                  parser, "number", "1 / /2", 5) == true);
+    }
+  }
+
+  SECTION("Numbers and texts mismatchs") {
+    REQUIRE(CheckNodeAtLocationIs<gd::NumberNode>(parser, "number", "12+\"hello\"", 0) == true);
+    REQUIRE(CheckNodeAtLocationIs<gd::NumberNode>(parser, "number", "12+\"hello\"", 1) == true);
+    REQUIRE(CheckNodeAtLocationIs<gd::OperatorNode>(parser, "number", "12+\"hello\"", 2) == true);
+    REQUIRE(CheckNodeAtLocationIs<gd::TextNode>(parser, "number", "12+\"hello\"", 3) == true);
+  }
+
+  SECTION("Valid objects") {
+    REQUIRE(CheckNodeAtLocationIs<gd::IdentifierNode>(
+                parser, "object", "HelloWorld1", 0) == true);
+    REQUIRE(CheckNodeAtLocationIs<gd::IdentifierNode>(
+                parser, "object", "HelloWorld1", 1) == true);
+    REQUIRE(CheckNodeAtLocationIs<gd::IdentifierNode>(
+                parser, "object", "HelloWorld1", 10) == true);
+    REQUIRE(CheckNoNodeAtLocation(parser, "object", "HelloWorld1", 11) == true);
+  }
+  SECTION("Invalid objects") {
+    REQUIRE(CheckNodeAtLocationIs<gd::IdentifierNode>(
+                parser, "object", "a+b", 0) == true);
+    REQUIRE(CheckNodeAtLocationIs<gd::OperatorNode>(
+                parser, "object", "a+b", 1) == true);
+    REQUIRE(CheckNodeAtLocationIs<gd::IdentifierNode>(
+                parser, "object", "a+b", 2) == true);
+    REQUIRE(CheckNoNodeAtLocation(parser, "object", "a+b", 3) == true);
+  }
+  SECTION("Valid function calls") {
+    SECTION("Test 1") {
+      REQUIRE(CheckNodeAtLocationIs<gd::NumberNode>(
+                  parser, "number", "12 + MyExtension::GetNumber()", 0) ==
+              true);
+      REQUIRE(CheckNodeAtLocationIs<gd::NumberNode>(
+                  parser, "number", "12 + MyExtension::GetNumber()", 1) ==
+              true);
+      REQUIRE(CheckNodeAtLocationIs<gd::OperatorNode>(
+                  parser, "number", "12 + MyExtension::GetNumber()", 2) ==
+              true);
+      REQUIRE(CheckNodeAtLocationIs<gd::OperatorNode>(
+                  parser, "number", "12 + MyExtension::GetNumber()", 3) ==
+              true);
+      REQUIRE(CheckNodeAtLocationIs<gd::OperatorNode>(
+                  parser, "number", "12 + MyExtension::GetNumber()", 4) ==
+              true);
+      REQUIRE(CheckNodeAtLocationIs<gd::FunctionCallNode>(
+                  parser, "number", "12 + MyExtension::GetNumber()", 5) ==
+              true);
+      REQUIRE(CheckNodeAtLocationIs<gd::FunctionCallNode>(
+                  parser, "number", "12 + MyExtension::GetNumber()", 27) ==
+              true);
+      REQUIRE(CheckNodeAtLocationIs<gd::FunctionCallNode>(
+                  parser, "number", "12 + MyExtension::GetNumber()", 28) ==
+              true);
+      REQUIRE(CheckNoNodeAtLocation(
+                  parser, "number", "12 + MyExtension::GetNumber()", 29) ==
+              true);
+    }
+    SECTION("Test 2") {
+      REQUIRE(CheckNodeAtLocationIs<gd::FunctionCallNode>(
+                  parser,
+                  "number",
+                  "MyExtension::GetNumberWith2Params(12, \"hello world\")",
+                  0) == true);
+      REQUIRE(CheckNodeAtLocationIs<gd::FunctionCallNode>(
+                  parser,
+                  "number",
+                  "MyExtension::GetNumberWith2Params(12, \"hello world\")",
+                  1) == true);
+      REQUIRE(CheckNodeAtLocationIs<gd::FunctionCallNode>(
+                  parser,
+                  "number",
+                  "MyExtension::GetNumberWith2Params(12, \"hello world\")",
+                  33) == true);
+      REQUIRE(CheckNodeAtLocationIs<gd::NumberNode>(
+                  parser,
+                  "number",
+                  "MyExtension::GetNumberWith2Params(12, \"hello world\")",
+                  34) == true);
+      REQUIRE(CheckNodeAtLocationIs<gd::NumberNode>(
+                  parser,
+                  "number",
+                  "MyExtension::GetNumberWith2Params(12, \"hello world\")",
+                  35) == true);
+      REQUIRE(CheckNodeAtLocationIs<gd::FunctionCallNode>(
+                  parser,
+                  "number",
+                  "MyExtension::GetNumberWith2Params(12, \"hello world\")",
+                  36) == true);
+      REQUIRE(CheckNodeAtLocationIs<gd::FunctionCallNode>(
+                  parser,
+                  "number",
+                  "MyExtension::GetNumberWith2Params(12, \"hello world\")",
+                  37) == true);
+      REQUIRE(CheckNodeAtLocationIs<gd::TextNode>(
+                  parser,
+                  "number",
+                  "MyExtension::GetNumberWith2Params(12, \"hello world\")",
+                  38) == true);
+      REQUIRE(CheckNodeAtLocationIs<gd::TextNode>(
+                  parser,
+                  "number",
+                  "MyExtension::GetNumberWith2Params(12, \"hello world\")",
+                  39) == true);
+      REQUIRE(CheckNodeAtLocationIs<gd::TextNode>(
+                  parser,
+                  "number",
+                  "MyExtension::GetNumberWith2Params(12, \"hello world\")",
+                  50) == true);
+      REQUIRE(CheckNodeAtLocationIs<gd::FunctionCallNode>(
+                  parser,
+                  "number",
+                  "MyExtension::GetNumberWith2Params(12, \"hello world\")",
+                  51) == true);
+      REQUIRE(CheckNoNodeAtLocation(
+                  parser,
+                  "number",
+                  "MyExtension::GetNumberWith2Params(12, \"hello world\")",
+                  52) == true);
+    }
+  }
+
+  SECTION("Invalid function calls") {
+    REQUIRE(CheckNodeAtLocationIs<gd::FunctionCallNode>(
+                parser, "number", "Idontexist(12)", 0) == true);
+    REQUIRE(CheckNodeAtLocationIs<gd::FunctionCallNode>(
+                parser, "number", "Idontexist(12)", 1) == true);
+    REQUIRE(CheckNodeAtLocationIs<gd::FunctionCallNode>(
+                parser, "number", "Idontexist(12)", 2) == true);
+    REQUIRE(CheckNodeAtLocationIs<gd::FunctionCallNode>(
+                parser, "number", "Idontexist(12)", 10) == true);
+    REQUIRE(CheckNodeAtLocationIs<gd::NumberNode>(
+                parser, "number", "Idontexist(12)", 11) == true);
+    REQUIRE(CheckNodeAtLocationIs<gd::NumberNode>(
+                parser, "number", "Idontexist(12)", 12) == true);
+    REQUIRE(CheckNodeAtLocationIs<gd::FunctionCallNode>(
+                parser, "number", "Idontexist(12)", 13) == true);
+    REQUIRE(CheckNoNodeAtLocation(parser, "number", "Idontexist(12)", 14) ==
+            true);
+  }
+
+  SECTION("Unterminated function calls") {
+    REQUIRE(CheckNodeAtLocationIs<gd::FunctionCallNode>(
+                parser, "number", "Idontexist(", 0) == true);
+    REQUIRE(CheckNodeAtLocationIs<gd::FunctionCallNode>(
+                parser, "number", "Idontexist(", 1) == true);
+    REQUIRE(CheckNodeAtLocationIs<gd::FunctionCallNode>(
+                parser, "number", "Idontexist(", 10) == true);
+    REQUIRE(CheckNoNodeAtLocation(parser, "number", "Idontexist(", 11) == true);
+  }
+
+  SECTION("Valid variables") {
+    SECTION("Test 1") {
+      REQUIRE(CheckNodeAtLocationIs<gd::VariableNode>(
+                  parser, "scenevar", "myVariable", 0) == true);
+      REQUIRE(CheckNodeAtLocationIs<gd::VariableNode>(
+                  parser, "scenevar", "myVariable", 9) == true);
+      REQUIRE(CheckNoNodeAtLocation(parser, "scenevar", "myVariable", 10) ==
+              true);
+    }
+    SECTION("Test 2") {
+      auto node = parser.ParseExpression("scenevar", "Var1.Child1");
+      REQUIRE(node != nullptr);
+
+      auto var1Node =
+          gd::ExpressionNodeLocationFinder::GetNodeAtPosition(*node, 0);
+      REQUIRE(dynamic_cast<gd::VariableNode*>(var1Node) != nullptr);
+      REQUIRE(dynamic_cast<gd::VariableNode&>(*var1Node).name == "Var1");
+
+      auto child1Node =
+          gd::ExpressionNodeLocationFinder::GetNodeAtPosition(*node, 4);
+      REQUIRE(dynamic_cast<gd::VariableAccessorNode*>(child1Node) != nullptr);
+      REQUIRE(dynamic_cast<gd::VariableAccessorNode&>(*child1Node).name ==
+              "Child1");
+    }
+    SECTION("Test 3") {
+      auto node = parser.ParseExpression(
+          "scenevar", "myVariable[ \"My named children\"  ].grandChild");
+      REQUIRE(node != nullptr);
+
+      auto myVariableNode =
+          gd::ExpressionNodeLocationFinder::GetNodeAtPosition(*node, 0);
+      REQUIRE(dynamic_cast<gd::VariableNode*>(myVariableNode) != nullptr);
+      REQUIRE(dynamic_cast<gd::VariableNode&>(*myVariableNode).name ==
+              "myVariable");
+
+      auto variableBracketAccessorNode =
+          gd::ExpressionNodeLocationFinder::GetNodeAtPosition(*node, 10);
+      REQUIRE(dynamic_cast<gd::VariableBracketAccessorNode*>(
+                  variableBracketAccessorNode) != nullptr);
+
+      auto textNode =
+          gd::ExpressionNodeLocationFinder::GetNodeAtPosition(*node, 15);
+      REQUIRE(dynamic_cast<gd::TextNode*>(textNode) != nullptr);
+
+      auto grandChildNode =
+          gd::ExpressionNodeLocationFinder::GetNodeAtPosition(*node, 40);
+      REQUIRE(dynamic_cast<gd::VariableAccessorNode*>(grandChildNode) !=
+              nullptr);
+      REQUIRE(dynamic_cast<gd::VariableAccessorNode&>(*grandChildNode).name ==
+              "grandChild");
+    }
+  }
+}

Core/tests/ExpressionParser2.cpp

@@ -21,6 +21,51 @@ TEST_CASE("ExpressionParser2", "[common][events]") {
 
   gd::ExpressionParser2 parser(platform, project, layout1);
 
+  SECTION("Empty expression") {
+    {
+      auto node = parser.ParseExpression("string", "");
+      REQUIRE(node != nullptr);
+      auto &emptyNode = dynamic_cast<gd::EmptyNode &>(*node);
+      REQUIRE(emptyNode.type == "string");
+      REQUIRE(emptyNode.text == "");
+    }
+    {
+      auto node = parser.ParseExpression("number", "");
+      REQUIRE(node != nullptr);
+      auto &emptyNode = dynamic_cast<gd::EmptyNode &>(*node);
+      REQUIRE(emptyNode.type == "number");
+      REQUIRE(emptyNode.text == "");
+    }
+    {
+      auto node = parser.ParseExpression("object", "");
+      REQUIRE(node != nullptr);
+      auto &emptyNode = dynamic_cast<gd::EmptyNode &>(*node);
+      REQUIRE(emptyNode.type == "object");
+      REQUIRE(emptyNode.text == "");
+    }
+    {
+      auto node = parser.ParseExpression("string", " ");
+      REQUIRE(node != nullptr);
+      auto &emptyNode = dynamic_cast<gd::EmptyNode &>(*node);
+      REQUIRE(emptyNode.type == "string");
+      REQUIRE(emptyNode.text == "");
+    }
+    {
+      auto node = parser.ParseExpression("number", " ");
+      REQUIRE(node != nullptr);
+      auto &emptyNode = dynamic_cast<gd::EmptyNode &>(*node);
+      REQUIRE(emptyNode.type == "number");
+      REQUIRE(emptyNode.text == "");
+    }
+    {
+      auto node = parser.ParseExpression("object", " ");
+      REQUIRE(node != nullptr);
+      auto &emptyNode = dynamic_cast<gd::EmptyNode &>(*node);
+      REQUIRE(emptyNode.type == "object");
+      REQUIRE(emptyNode.text == "");
+    }
+  }
+
   SECTION("Valid texts") {
     {
       auto node = parser.ParseExpression("string", "\"hello world\"");
@@ -50,7 +95,8 @@ TEST_CASE("ExpressionParser2", "[common][events]") {
       REQUIRE(textNode.text == "\\");
     }
     {
-      auto node = parser.ParseExpression("string", "\"hello \\\\\\\"world\\\"\"");
+      auto node =
+          parser.ParseExpression("string", "\"hello \\\\\\\"world\\\"\"");
       REQUIRE(node != nullptr);
       auto &textNode = dynamic_cast<gd::TextNode &>(*node);
       REQUIRE(textNode.text == "hello \\\"world\"");
@@ -280,12 +326,42 @@ TEST_CASE("ExpressionParser2", "[common][events]") {
     }
   }
 
+  SECTION("valid operators") {
+    {
+      auto node = parser.ParseExpression("number", "123 + 456");
+      REQUIRE(node != nullptr);
+      auto &operatorNode = dynamic_cast<gd::OperatorNode &>(*node);
+      REQUIRE(operatorNode.op == '+');
+      REQUIRE(operatorNode.type == "number");
+      auto &leftNumberNode =
+          dynamic_cast<gd::NumberNode &>(*operatorNode.leftHandSide);
+      REQUIRE(leftNumberNode.number == "123");
+      auto &rightNumberNode =
+          dynamic_cast<gd::NumberNode &>(*operatorNode.rightHandSide);
+      REQUIRE(rightNumberNode.number == "456");
+    }
+    {
+      auto node = parser.ParseExpression("string", "\"abc\" + \"def\"");
+      REQUIRE(node != nullptr);
+      auto &operatorNode = dynamic_cast<gd::OperatorNode &>(*node);
+      REQUIRE(operatorNode.op == '+');
+      REQUIRE(operatorNode.type == "string");
+      auto &leftTextNode =
+          dynamic_cast<gd::TextNode &>(*operatorNode.leftHandSide);
+      REQUIRE(leftTextNode.text == "abc");
+      auto &rightTextNode =
+          dynamic_cast<gd::TextNode &>(*operatorNode.rightHandSide);
+      REQUIRE(rightTextNode.text == "def");
+    }
+  }
+
   SECTION("valid unary operators") {
     {
       auto node = parser.ParseExpression("number", "-123");
       REQUIRE(node != nullptr);
       auto &unaryOperatorNode = dynamic_cast<gd::UnaryOperatorNode &>(*node);
       REQUIRE(unaryOperatorNode.op == '-');
+      REQUIRE(unaryOperatorNode.type == "number");
       auto &numberNode =
           dynamic_cast<gd::NumberNode &>(*unaryOperatorNode.factor);
       REQUIRE(numberNode.number == "123");
@@ -295,6 +371,7 @@ TEST_CASE("ExpressionParser2", "[common][events]") {
       REQUIRE(node != nullptr);
       auto &unaryOperatorNode = dynamic_cast<gd::UnaryOperatorNode &>(*node);
       REQUIRE(unaryOperatorNode.op == '+');
+      REQUIRE(unaryOperatorNode.type == "number");
       auto &numberNode =
           dynamic_cast<gd::NumberNode &>(*unaryOperatorNode.factor);
       REQUIRE(numberNode.number == "123");
@@ -304,6 +381,7 @@ TEST_CASE("ExpressionParser2", "[common][events]") {
       REQUIRE(node != nullptr);
       auto &unaryOperatorNode = dynamic_cast<gd::UnaryOperatorNode &>(*node);
       REQUIRE(unaryOperatorNode.op == '-');
+      REQUIRE(unaryOperatorNode.type == "number");
       auto &numberNode =
           dynamic_cast<gd::NumberNode &>(*unaryOperatorNode.factor);
       REQUIRE(numberNode.number == "123.2");
@@ -520,6 +598,26 @@ TEST_CASE("ExpressionParser2", "[common][events]") {
       REQUIRE(validator.GetErrors().size() == 0);
     }
 
+    {
+      auto node = parser.ParseExpression("object", "Hello World 1");
+      REQUIRE(node != nullptr);
+      auto &identifierNode = dynamic_cast<gd::IdentifierNode &>(*node);
+      REQUIRE(identifierNode.identifierName == "Hello World 1");
+
+      gd::ExpressionValidator validator;
+      node->Visit(validator);
+      REQUIRE(validator.GetErrors().size() == 0);
+    }
+    {
+      auto node = parser.ParseExpression("object", "Hello World 1 ");
+      REQUIRE(node != nullptr);
+      auto &identifierNode = dynamic_cast<gd::IdentifierNode &>(*node);
+      REQUIRE(identifierNode.identifierName == "Hello World 1");
+
+      gd::ExpressionValidator validator;
+      node->Visit(validator);
+      REQUIRE(validator.GetErrors().size() == 0);
+    }
     {
       auto node = parser.ParseExpression("object", "Hello World 1  ");
       REQUIRE(node != nullptr);
@@ -550,9 +648,9 @@ TEST_CASE("ExpressionParser2", "[common][events]") {
       gd::ExpressionValidator validator;
       node->Visit(validator);
       REQUIRE(validator.GetErrors().size() == 1);
-      REQUIRE(
-          validator.GetErrors()[0]->GetMessage() ==
-          "Operators (+, -, /, *) can't be used with an object name. Remove the operator.");
+      REQUIRE(validator.GetErrors()[0]->GetMessage() ==
+              "Operators (+, -, /, *) can't be used with an object name. "
+              "Remove the operator.");
     }
   }
 
@@ -560,7 +658,7 @@ TEST_CASE("ExpressionParser2", "[common][events]") {
     {
       auto node = parser.ParseExpression("number", "MyExtension::GetNumber()");
       REQUIRE(node != nullptr);
-      auto &functionNode = dynamic_cast<gd::FunctionNode &>(*node);
+      auto &functionNode = dynamic_cast<gd::FunctionCallNode &>(*node);
       REQUIRE(functionNode.functionName == "MyExtension::GetNumber");
       REQUIRE(functionNode.objectName == "");
       REQUIRE(functionNode.behaviorName == "");
@@ -573,7 +671,7 @@ TEST_CASE("ExpressionParser2", "[common][events]") {
       auto node = parser.ParseExpression(
           "number", "MyExtension::GetNumberWith2Params(12, \"hello world\")");
       REQUIRE(node != nullptr);
-      auto &functionNode = dynamic_cast<gd::FunctionNode &>(*node);
+      auto &functionNode = dynamic_cast<gd::FunctionCallNode &>(*node);
       REQUIRE(functionNode.functionName == "MyExtension::GetNumberWith2Params");
       REQUIRE(functionNode.objectName == "");
       REQUIRE(functionNode.behaviorName == "");
@@ -586,7 +684,7 @@ TEST_CASE("ExpressionParser2", "[common][events]") {
       auto node = parser.ParseExpression(
           "number", "MyExtension::GetNumberWith3Params(12, \"hello world\")");
       REQUIRE(node != nullptr);
-      auto &functionNode = dynamic_cast<gd::FunctionNode &>(*node);
+      auto &functionNode = dynamic_cast<gd::FunctionCallNode &>(*node);
 
       gd::ExpressionValidator validator;
       node->Visit(validator);
@@ -597,7 +695,7 @@ TEST_CASE("ExpressionParser2", "[common][events]") {
           "number",
           "MyExtension::GetNumberWith3Params(12, \"hello world\", 34)");
       REQUIRE(node != nullptr);
-      auto &functionNode = dynamic_cast<gd::FunctionNode &>(*node);
+      auto &functionNode = dynamic_cast<gd::FunctionCallNode &>(*node);
 
       gd::ExpressionValidator validator;
       node->Visit(validator);
@@ -607,7 +705,7 @@ TEST_CASE("ExpressionParser2", "[common][events]") {
       auto node =
           parser.ParseExpression("number", "MySpriteObject.GetObjectNumber()");
       REQUIRE(node != nullptr);
-      auto &functionNode = dynamic_cast<gd::FunctionNode &>(*node);
+      auto &functionNode = dynamic_cast<gd::FunctionCallNode &>(*node);
       REQUIRE(functionNode.functionName == "GetObjectNumber");
       REQUIRE(functionNode.objectName == "MySpriteObject");
       REQUIRE(functionNode.behaviorName == "");
@@ -620,7 +718,7 @@ TEST_CASE("ExpressionParser2", "[common][events]") {
       auto node = parser.ParseExpression(
           "number", "WhateverObject.WhateverBehavior::WhateverFunction()");
       REQUIRE(node != nullptr);
-      auto &functionNode = dynamic_cast<gd::FunctionNode &>(*node);
+      auto &functionNode = dynamic_cast<gd::FunctionCallNode &>(*node);
       REQUIRE(functionNode.functionName == "WhateverFunction");
       REQUIRE(functionNode.objectName == "WhateverObject");
       REQUIRE(functionNode.behaviorName == "WhateverBehavior");
@@ -630,7 +728,58 @@ TEST_CASE("ExpressionParser2", "[common][events]") {
           "number",
           "WhateverObject.WhateverBehavior::WhateverFunction(1, \"2\", three)");
       REQUIRE(node != nullptr);
-      auto &functionNode = dynamic_cast<gd::FunctionNode &>(*node);
+      auto &functionNode = dynamic_cast<gd::FunctionCallNode &>(*node);
+      REQUIRE(functionNode.functionName == "WhateverFunction");
+      REQUIRE(functionNode.objectName == "WhateverObject");
+      REQUIRE(functionNode.behaviorName == "WhateverBehavior");
+      REQUIRE(functionNode.parameters.size() == 3);
+      auto &numberNode =
+          dynamic_cast<gd::NumberNode &>(*functionNode.parameters[0]);
+      auto &textNode =
+          dynamic_cast<gd::TextNode &>(*functionNode.parameters[1]);
+      auto &identifierNode =
+          dynamic_cast<gd::IdentifierNode &>(*functionNode.parameters[2]);
+
+      REQUIRE(numberNode.number == "1");
+      REQUIRE(textNode.text == "2");
+      REQUIRE(identifierNode.identifierName == "three");
+    }
+  }
+
+  SECTION("Valid function calls (whitespaces)") {
+    {
+      auto node =
+          parser.ParseExpression("number", "MyExtension::GetNumber  ()");
+      REQUIRE(node != nullptr);
+      auto &functionNode = dynamic_cast<gd::FunctionCallNode &>(*node);
+      REQUIRE(functionNode.functionName == "MyExtension::GetNumber");
+      REQUIRE(functionNode.objectName == "");
+      REQUIRE(functionNode.behaviorName == "");
+
+      gd::ExpressionValidator validator;
+      node->Visit(validator);
+      REQUIRE(validator.GetErrors().size() == 0);
+    }
+    {
+      auto node = parser.ParseExpression(
+          "number", "MySpriteObject  .  GetObjectNumber  ()");
+      REQUIRE(node != nullptr);
+      auto &functionNode = dynamic_cast<gd::FunctionCallNode &>(*node);
+      REQUIRE(functionNode.functionName == "GetObjectNumber");
+      REQUIRE(functionNode.objectName == "MySpriteObject");
+      REQUIRE(functionNode.behaviorName == "");
+
+      gd::ExpressionValidator validator;
+      node->Visit(validator);
+      REQUIRE(validator.GetErrors().size() == 0);
+    }
+    {
+      auto node = parser.ParseExpression("number",
+                                         "WhateverObject  .  WhateverBehavior  "
+                                         "::  WhateverFunction  (  1  ,  \"2\" "
+                                         " ,  three  )");
+      REQUIRE(node != nullptr);
+      auto &functionNode = dynamic_cast<gd::FunctionCallNode &>(*node);
       REQUIRE(functionNode.functionName == "WhateverFunction");
       REQUIRE(functionNode.objectName == "WhateverObject");
       REQUIRE(functionNode.behaviorName == "WhateverBehavior");
@@ -653,7 +802,7 @@ TEST_CASE("ExpressionParser2", "[common][events]") {
       auto node = parser.ParseExpression(
           "number", "MyExtension::GetNumberWith3Params(12, \"hello world\",)");
       REQUIRE(node != nullptr);
-      auto &functionNode = dynamic_cast<gd::FunctionNode &>(*node);
+      auto &functionNode = dynamic_cast<gd::FunctionCallNode &>(*node);
 
       gd::ExpressionValidator validator;
       node->Visit(validator);
@@ -665,7 +814,7 @@ TEST_CASE("ExpressionParser2", "[common][events]") {
     {
       auto node = parser.ParseExpression("number", "MyExtension::MouseX(,)");
       REQUIRE(node != nullptr);
-      auto &functionNode = dynamic_cast<gd::FunctionNode &>(*node);
+      auto &functionNode = dynamic_cast<gd::FunctionCallNode &>(*node);
 
       gd::ExpressionValidator validator;
       node->Visit(validator);
@@ -673,6 +822,40 @@ TEST_CASE("ExpressionParser2", "[common][events]") {
     }
   }
 
+  SECTION("Valid object function name") {
+      auto node = parser.ParseExpression("string", "MyObject.MyFunc");
+      REQUIRE(node != nullptr);
+      auto &objectFunctionName = dynamic_cast<gd::ObjectFunctionNameNode &>(*node);
+      REQUIRE(objectFunctionName.objectName == "MyObject");
+      REQUIRE(objectFunctionName.objectFunctionOrBehaviorName == "MyFunc");
+  }
+
+  SECTION("Valid object behavior name") {
+      auto node = parser.ParseExpression("string", "MyObject.MyBehavior::MyFunc");
+      REQUIRE(node != nullptr);
+      auto &objectFunctionName = dynamic_cast<gd::ObjectFunctionNameNode &>(*node);
+      REQUIRE(objectFunctionName.objectName == "MyObject");
+      REQUIRE(objectFunctionName.objectFunctionOrBehaviorName == "MyBehavior");
+      REQUIRE(objectFunctionName.behaviorFunctionName == "MyFunc");
+  }
+
+  SECTION("Unfinished object function name") {
+      auto node = parser.ParseExpression("string", "MyObject.");
+      REQUIRE(node != nullptr);
+      auto &objectFunctionName = dynamic_cast<gd::ObjectFunctionNameNode &>(*node);
+      REQUIRE(objectFunctionName.objectName == "MyObject");
+      REQUIRE(objectFunctionName.objectFunctionOrBehaviorName == "");
+  }
+
+  SECTION("Unfinished object behavior name") {
+      auto node = parser.ParseExpression("string", "MyObject.MyBehavior::");
+      REQUIRE(node != nullptr);
+      auto &objectFunctionName = dynamic_cast<gd::ObjectFunctionNameNode &>(*node);
+      REQUIRE(objectFunctionName.objectName == "MyObject");
+      REQUIRE(objectFunctionName.objectFunctionOrBehaviorName == "MyBehavior");
+      REQUIRE(objectFunctionName.behaviorFunctionName == "");
+  }
+
   SECTION("Invalid function calls") {
     {
       auto node = parser.ParseExpression("number", "Idontexist(12)");
@@ -746,6 +929,45 @@ TEST_CASE("ExpressionParser2", "[common][events]") {
       REQUIRE(validator.GetErrors()[0]->GetEndPosition() == 33);
     }
   }
+  SECTION("Invalid free function call, finishing with namespace separator") {
+    {
+      auto node = parser.ParseExpression("number", "MyExtension::(12)");
+      REQUIRE(node != nullptr);
+
+      gd::ExpressionValidator validator;
+      node->Visit(validator);
+      REQUIRE(validator.GetErrors().size() == 2);
+      REQUIRE(validator.GetErrors()[0]->GetMessage() ==
+              "Cannot find an expression with this name: MyExtension::\nDouble "
+              "check that you've not made any typo in the name.");
+      REQUIRE(validator.GetErrors()[0]->GetStartPosition() == 0);
+      REQUIRE(validator.GetErrors()[0]->GetEndPosition() == 17);
+      REQUIRE(validator.GetErrors()[1]->GetMessage() ==
+              "This parameter was not expected by this expression. Remove it "
+              "or verify that you've entered the proper expression name.");
+    }
+  }
+
+  SECTION("Invalid behavior function call, finishing with namespace separator") {
+    {
+      auto node = parser.ParseExpression("number", "MyObject.MyBehavior::(12)");
+      REQUIRE(node != nullptr);
+
+      gd::ExpressionValidator validator;
+      node->Visit(validator);
+      REQUIRE(validator.GetErrors().size() == 2);
+
+      // TODO: The error message could be improved
+      REQUIRE(validator.GetErrors()[0]->GetMessage() ==
+              "Cannot find an expression with this name: \nDouble "
+              "check that you've not made any typo in the name.");
+      REQUIRE(validator.GetErrors()[0]->GetStartPosition() == 0);
+      REQUIRE(validator.GetErrors()[0]->GetEndPosition() == 25);
+      REQUIRE(validator.GetErrors()[1]->GetMessage() ==
+              "This parameter was not expected by this expression. Remove it "
+              "or verify that you've entered the proper expression name.");
+    }
+  }
 
   SECTION("Invalid variables") {
     {
@@ -795,7 +1017,7 @@ TEST_CASE("ExpressionParser2", "[common][events]") {
 
     {
       auto node = parser.ParseExpression(
-          "scenevar", "myVariable[ \"My named children\"  ].grandChild");
+          "scenevar", "myVariable[ \"My named children\"  ] . grandChild");
       REQUIRE(node != nullptr);
       auto &variableNode = dynamic_cast<gd::VariableNode &>(*node);
       REQUIRE(variableNode.name == "myVariable");
@@ -853,4 +1075,425 @@ TEST_CASE("ExpressionParser2", "[common][events]") {
                          "\fe'f\fwe'\te'w\f'reg[pto43o]"));
     }
   }
+
+  SECTION("Location") {
+    SECTION("Single node locations") {
+      {
+        auto node = parser.ParseExpression("string", "\"hello world\"");
+        REQUIRE(node != nullptr);
+        auto &textNode = dynamic_cast<gd::TextNode &>(*node);
+        REQUIRE(textNode.text == "hello world");
+        REQUIRE(textNode.location.GetStartPosition() == 0);
+        REQUIRE(textNode.location.GetEndPosition() == 13);
+      }
+      {
+        auto node = parser.ParseExpression("number", "3.14159");
+        REQUIRE(node != nullptr);
+        auto &numberNode = dynamic_cast<gd::NumberNode &>(*node);
+        REQUIRE(numberNode.number == "3.14159");
+        REQUIRE(numberNode.location.GetStartPosition() == 0);
+        REQUIRE(numberNode.location.GetEndPosition() == 7);
+      }
+      {
+        auto node = parser.ParseExpression("number", "345 +  678");
+        REQUIRE(node != nullptr);
+        auto &operatorNode = dynamic_cast<gd::OperatorNode &>(*node);
+        REQUIRE(operatorNode.location.GetStartPosition() == 0);
+        REQUIRE(operatorNode.location.GetEndPosition() == 10);
+        REQUIRE(operatorNode.leftHandSide != nullptr);
+        REQUIRE(operatorNode.rightHandSide != nullptr);
+        REQUIRE(operatorNode.leftHandSide->location.GetStartPosition() == 0);
+        REQUIRE(operatorNode.leftHandSide->location.GetEndPosition() == 3);
+        REQUIRE(operatorNode.rightHandSide->location.GetStartPosition() == 7);
+        REQUIRE(operatorNode.rightHandSide->location.GetEndPosition() == 10);
+      }
+    }
+    SECTION("Variable locations (simple variable name)") {
+      auto node = parser.ParseExpression("scenevar", "MyVariable");
+      REQUIRE(node != nullptr);
+      auto &variableNode = dynamic_cast<gd::VariableNode &>(*node);
+      REQUIRE(variableNode.name == "MyVariable");
+      REQUIRE(variableNode.location.GetStartPosition() == 0);
+      REQUIRE(variableNode.location.GetEndPosition() == 10);
+      REQUIRE(variableNode.nameLocation.GetStartPosition() == 0);
+      REQUIRE(variableNode.nameLocation.GetEndPosition() == 10);
+    }
+    SECTION("Variable locations (with child)") {
+      auto node = parser.ParseExpression("scenevar", "MyVariable.MyChild");
+      REQUIRE(node != nullptr);
+      auto &variableNode = dynamic_cast<gd::VariableNode &>(*node);
+      REQUIRE(variableNode.name == "MyVariable");
+      REQUIRE(variableNode.location.GetStartPosition() == 0);
+      REQUIRE(variableNode.location.GetEndPosition() == 18);
+      REQUIRE(variableNode.nameLocation.GetStartPosition() == 0);
+      REQUIRE(variableNode.nameLocation.GetEndPosition() == 10);
+      REQUIRE(variableNode.child != nullptr);
+      auto &childVariableAccessorNode =
+          dynamic_cast<gd::VariableAccessorNode &>(*variableNode.child);
+      REQUIRE(childVariableAccessorNode.location.GetStartPosition() == 10);
+      REQUIRE(childVariableAccessorNode.location.GetEndPosition() == 18);
+      REQUIRE(childVariableAccessorNode.dotLocation.GetStartPosition() == 10);
+      REQUIRE(childVariableAccessorNode.dotLocation.GetEndPosition() == 11);
+      REQUIRE(childVariableAccessorNode.nameLocation.GetStartPosition() == 11);
+      REQUIRE(childVariableAccessorNode.nameLocation.GetEndPosition() == 18);
+    }
+    SECTION("Free function locations") {
+      auto node =
+          parser.ParseExpression("number", "WhateverFunction(1, \"2\", three)");
+      REQUIRE(node != nullptr);
+      auto &functionNode = dynamic_cast<gd::FunctionCallNode &>(*node);
+      REQUIRE(functionNode.functionName == "WhateverFunction");
+      REQUIRE(functionNode.parameters.size() == 3);
+      auto &numberNode =
+          dynamic_cast<gd::NumberNode &>(*functionNode.parameters[0]);
+      auto &textNode =
+          dynamic_cast<gd::TextNode &>(*functionNode.parameters[1]);
+      auto &identifierNode =
+          dynamic_cast<gd::IdentifierNode &>(*functionNode.parameters[2]);
+
+      REQUIRE(numberNode.number == "1");
+      REQUIRE(textNode.text == "2");
+      REQUIRE(identifierNode.identifierName == "three");
+
+      REQUIRE(functionNode.location.GetStartPosition() == 0);
+      REQUIRE(functionNode.location.GetEndPosition() == 31);
+      REQUIRE(functionNode.objectNameLocation.IsValid() == false);
+      REQUIRE(functionNode.objectNameDotLocation.IsValid() == false);
+      REQUIRE(functionNode.behaviorNameLocation.IsValid() == false);
+      REQUIRE(functionNode.behaviorNameNamespaceSeparatorLocation.IsValid() ==
+              false);
+      REQUIRE(functionNode.functionNameLocation.GetStartPosition() == 0);
+      REQUIRE(functionNode.functionNameLocation.GetEndPosition() == 16);
+      REQUIRE(functionNode.openingParenthesisLocation.GetStartPosition() == 16);
+      REQUIRE(functionNode.openingParenthesisLocation.GetEndPosition() == 17);
+      REQUIRE(numberNode.location.GetStartPosition() == 17);
+      REQUIRE(numberNode.location.GetEndPosition() == 18);
+      REQUIRE(textNode.location.GetStartPosition() == 20);
+      REQUIRE(textNode.location.GetEndPosition() == 23);
+      REQUIRE(identifierNode.location.GetStartPosition() == 25);
+      REQUIRE(identifierNode.location.GetEndPosition() == 30);
+      REQUIRE(functionNode.closingParenthesisLocation.GetStartPosition() == 30);
+      REQUIRE(functionNode.closingParenthesisLocation.GetEndPosition() == 31);
+    }
+    SECTION("Free function locations (with whitespaces)") {
+      auto node = parser.ParseExpression("number",
+                                         "WhateverFunction  (1, \"2\", three)");
+      REQUIRE(node != nullptr);
+      auto &functionNode = dynamic_cast<gd::FunctionCallNode &>(*node);
+      REQUIRE(functionNode.functionName == "WhateverFunction");
+      REQUIRE(functionNode.parameters.size() == 3);
+
+      REQUIRE(functionNode.location.GetStartPosition() == 0);
+      REQUIRE(functionNode.location.GetEndPosition() == 33);
+      REQUIRE(functionNode.objectNameLocation.IsValid() == false);
+      REQUIRE(functionNode.objectNameDotLocation.IsValid() == false);
+      REQUIRE(functionNode.behaviorNameLocation.IsValid() == false);
+      REQUIRE(functionNode.behaviorNameNamespaceSeparatorLocation.IsValid() ==
+              false);
+      REQUIRE(functionNode.functionNameLocation.GetStartPosition() == 0);
+      REQUIRE(functionNode.functionNameLocation.GetEndPosition() == 16);
+      REQUIRE(functionNode.openingParenthesisLocation.GetStartPosition() == 18);
+      REQUIRE(functionNode.openingParenthesisLocation.GetEndPosition() == 19);
+      REQUIRE(functionNode.closingParenthesisLocation.GetStartPosition() == 32);
+      REQUIRE(functionNode.closingParenthesisLocation.GetEndPosition() == 33);
+    }
+    SECTION("Object function locations") {
+      auto node = parser.ParseExpression(
+          "number", "WhateverObject.WhateverFunction(1, \"2\", three)");
+      REQUIRE(node != nullptr);
+      auto &functionNode = dynamic_cast<gd::FunctionCallNode &>(*node);
+      REQUIRE(functionNode.functionName == "WhateverFunction");
+      REQUIRE(functionNode.objectName == "WhateverObject");
+      REQUIRE(functionNode.parameters.size() == 3);
+      auto &numberNode =
+          dynamic_cast<gd::NumberNode &>(*functionNode.parameters[0]);
+      auto &textNode =
+          dynamic_cast<gd::TextNode &>(*functionNode.parameters[1]);
+      auto &identifierNode =
+          dynamic_cast<gd::IdentifierNode &>(*functionNode.parameters[2]);
+
+      REQUIRE(numberNode.number == "1");
+      REQUIRE(textNode.text == "2");
+      REQUIRE(identifierNode.identifierName == "three");
+
+      REQUIRE(functionNode.location.GetStartPosition() == 0);
+      REQUIRE(functionNode.location.GetEndPosition() == 46);
+      REQUIRE(functionNode.objectNameLocation.GetStartPosition() == 0);
+      REQUIRE(functionNode.objectNameLocation.GetEndPosition() == 14);
+      REQUIRE(functionNode.objectNameDotLocation.GetStartPosition() == 14);
+      REQUIRE(functionNode.objectNameDotLocation.GetEndPosition() == 15);
+      REQUIRE(functionNode.behaviorNameLocation.IsValid() == false);
+      REQUIRE(functionNode.behaviorNameNamespaceSeparatorLocation.IsValid() ==
+              false);
+      REQUIRE(functionNode.functionNameLocation.GetStartPosition() == 15);
+      REQUIRE(functionNode.functionNameLocation.GetEndPosition() == 31);
+      REQUIRE(functionNode.openingParenthesisLocation.GetStartPosition() == 31);
+      REQUIRE(functionNode.openingParenthesisLocation.GetEndPosition() == 32);
+      REQUIRE(numberNode.location.GetStartPosition() == 32);
+      REQUIRE(numberNode.location.GetEndPosition() == 33);
+      REQUIRE(textNode.location.GetStartPosition() == 35);
+      REQUIRE(textNode.location.GetEndPosition() == 38);
+      REQUIRE(identifierNode.location.GetStartPosition() == 40);
+      REQUIRE(identifierNode.location.GetEndPosition() == 45);
+      REQUIRE(functionNode.closingParenthesisLocation.GetStartPosition() == 45);
+      REQUIRE(functionNode.closingParenthesisLocation.GetEndPosition() == 46);
+    }
+    SECTION("Object function name locations") {
+      auto node =
+          parser.ParseExpression("number", "WhateverObject.WhateverFunction");
+      REQUIRE(node != nullptr);
+      auto &objectFunctionNameNode =
+          dynamic_cast<gd::ObjectFunctionNameNode &>(*node);
+      REQUIRE(objectFunctionNameNode.objectName == "WhateverObject");
+      REQUIRE(objectFunctionNameNode.objectFunctionOrBehaviorName ==
+              "WhateverFunction");
+
+      REQUIRE(objectFunctionNameNode.location.GetStartPosition() == 0);
+      REQUIRE(objectFunctionNameNode.location.GetEndPosition() == 31);
+      REQUIRE(objectFunctionNameNode.objectNameLocation.GetStartPosition() ==
+              0);
+      REQUIRE(objectFunctionNameNode.objectNameLocation.GetEndPosition() == 14);
+      REQUIRE(objectFunctionNameNode.objectNameDotLocation.GetStartPosition() ==
+              14);
+      REQUIRE(objectFunctionNameNode.objectNameDotLocation.GetEndPosition() ==
+              15);
+      REQUIRE(objectFunctionNameNode.behaviorFunctionNameLocation.IsValid() ==
+              false);
+      REQUIRE(objectFunctionNameNode.behaviorNameNamespaceSeparatorLocation
+                  .IsValid() == false);
+      REQUIRE(objectFunctionNameNode.objectFunctionOrBehaviorNameLocation
+                  .GetStartPosition() == 15);
+      REQUIRE(objectFunctionNameNode.objectFunctionOrBehaviorNameLocation
+                  .GetEndPosition() == 31);
+    }
+    SECTION("Object function name locations (with whitespace)") {
+      auto node = parser.ParseExpression(
+          "number", "WhateverObject  .  WhateverFunction  ");
+      REQUIRE(node != nullptr);
+      auto &objectFunctionNameNode =
+          dynamic_cast<gd::ObjectFunctionNameNode &>(*node);
+      REQUIRE(objectFunctionNameNode.objectName == "WhateverObject");
+      REQUIRE(objectFunctionNameNode.objectFunctionOrBehaviorName ==
+              "WhateverFunction");
+
+      REQUIRE(objectFunctionNameNode.location.GetStartPosition() == 0);
+      REQUIRE(objectFunctionNameNode.location.GetEndPosition() == 37);
+      REQUIRE(objectFunctionNameNode.objectNameLocation.GetStartPosition() ==
+              0);
+      REQUIRE(objectFunctionNameNode.objectNameLocation.GetEndPosition() == 14);
+      REQUIRE(objectFunctionNameNode.objectNameDotLocation.GetStartPosition() ==
+              16);
+      REQUIRE(objectFunctionNameNode.objectNameDotLocation.GetEndPosition() ==
+              17);
+      REQUIRE(objectFunctionNameNode.behaviorFunctionNameLocation.IsValid() ==
+              false);
+      REQUIRE(objectFunctionNameNode.behaviorNameNamespaceSeparatorLocation
+                  .IsValid() == false);
+      REQUIRE(objectFunctionNameNode.objectFunctionOrBehaviorNameLocation
+                  .GetStartPosition() == 19);
+      REQUIRE(objectFunctionNameNode.objectFunctionOrBehaviorNameLocation
+                  .GetEndPosition() == 35);
+    }
+    SECTION("Object function locations (with whitespaces)") {
+      auto node = parser.ParseExpression(
+          "number", "WhateverObject . WhateverFunction (1, \"2\", three)");
+      REQUIRE(node != nullptr);
+      auto &functionNode = dynamic_cast<gd::FunctionCallNode &>(*node);
+      REQUIRE(functionNode.functionName == "WhateverFunction");
+      REQUIRE(functionNode.objectName == "WhateverObject");
+
+      REQUIRE(functionNode.location.GetStartPosition() == 0);
+      REQUIRE(functionNode.location.GetEndPosition() == 49);
+      REQUIRE(functionNode.objectNameLocation.GetStartPosition() == 0);
+      REQUIRE(functionNode.objectNameLocation.GetEndPosition() == 14);
+      REQUIRE(functionNode.objectNameDotLocation.GetStartPosition() == 15);
+      REQUIRE(functionNode.objectNameDotLocation.GetEndPosition() == 16);
+      REQUIRE(functionNode.functionNameLocation.GetStartPosition() == 17);
+      REQUIRE(functionNode.functionNameLocation.GetEndPosition() == 33);
+      REQUIRE(functionNode.openingParenthesisLocation.GetStartPosition() == 34);
+      REQUIRE(functionNode.openingParenthesisLocation.GetEndPosition() == 35);
+      REQUIRE(functionNode.closingParenthesisLocation.GetStartPosition() == 48);
+      REQUIRE(functionNode.closingParenthesisLocation.GetEndPosition() == 49);
+    }
+    SECTION("Behavior function locations") {
+      auto node = parser.ParseExpression(
+          "number",
+          "WhateverObject.WhateverBehavior::WhateverFunction(1, \"2\", three)");
+      REQUIRE(node != nullptr);
+      auto &functionNode = dynamic_cast<gd::FunctionCallNode &>(*node);
+      REQUIRE(functionNode.functionName == "WhateverFunction");
+      REQUIRE(functionNode.objectName == "WhateverObject");
+      REQUIRE(functionNode.behaviorName == "WhateverBehavior");
+      REQUIRE(functionNode.parameters.size() == 3);
+      auto &numberNode =
+          dynamic_cast<gd::NumberNode &>(*functionNode.parameters[0]);
+      auto &textNode =
+          dynamic_cast<gd::TextNode &>(*functionNode.parameters[1]);
+      auto &identifierNode =
+          dynamic_cast<gd::IdentifierNode &>(*functionNode.parameters[2]);
+
+      REQUIRE(numberNode.number == "1");
+      REQUIRE(textNode.text == "2");
+      REQUIRE(identifierNode.identifierName == "three");
+
+      REQUIRE(functionNode.location.GetStartPosition() == 0);
+      REQUIRE(functionNode.location.GetEndPosition() == 64);
+      REQUIRE(functionNode.objectNameLocation.GetStartPosition() == 0);
+      REQUIRE(functionNode.objectNameLocation.GetEndPosition() == 14);
+      REQUIRE(functionNode.objectNameDotLocation.GetStartPosition() == 14);
+      REQUIRE(functionNode.objectNameDotLocation.GetEndPosition() == 15);
+      REQUIRE(functionNode.behaviorNameLocation.GetStartPosition() == 15);
+      REQUIRE(functionNode.behaviorNameLocation.GetEndPosition() == 31);
+      REQUIRE(functionNode.behaviorNameNamespaceSeparatorLocation
+                  .GetStartPosition() == 31);
+      REQUIRE(functionNode.behaviorNameNamespaceSeparatorLocation
+                  .GetEndPosition() == 33);
+      REQUIRE(functionNode.functionNameLocation.GetStartPosition() == 33);
+      REQUIRE(functionNode.functionNameLocation.GetEndPosition() == 49);
+      REQUIRE(functionNode.openingParenthesisLocation.GetStartPosition() == 49);
+      REQUIRE(functionNode.openingParenthesisLocation.GetEndPosition() == 50);
+      REQUIRE(numberNode.location.GetStartPosition() == 50);
+      REQUIRE(numberNode.location.GetEndPosition() == 51);
+      REQUIRE(textNode.location.GetStartPosition() == 53);
+      REQUIRE(textNode.location.GetEndPosition() == 56);
+      REQUIRE(identifierNode.location.GetStartPosition() == 58);
+      REQUIRE(identifierNode.location.GetEndPosition() == 63);
+      REQUIRE(functionNode.closingParenthesisLocation.GetStartPosition() == 63);
+      REQUIRE(functionNode.closingParenthesisLocation.GetEndPosition() == 64);
+    }
+    SECTION("Behavior function name locations (with whitespace)") {
+      auto node = parser.ParseExpression(
+          "number", "WhateverObject  .  WhateverFunction  ");
+      REQUIRE(node != nullptr);
+      auto &objectFunctionNameNode =
+          dynamic_cast<gd::ObjectFunctionNameNode &>(*node);
+      REQUIRE(objectFunctionNameNode.objectName == "WhateverObject");
+      REQUIRE(objectFunctionNameNode.objectFunctionOrBehaviorName ==
+              "WhateverFunction");
+
+      REQUIRE(objectFunctionNameNode.location.GetStartPosition() == 0);
+      REQUIRE(objectFunctionNameNode.location.GetEndPosition() == 37);
+      REQUIRE(objectFunctionNameNode.objectNameLocation.GetStartPosition() ==
+              0);
+      REQUIRE(objectFunctionNameNode.objectNameLocation.GetEndPosition() == 14);
+      REQUIRE(objectFunctionNameNode.objectNameDotLocation.GetStartPosition() ==
+              16);
+      REQUIRE(objectFunctionNameNode.objectNameDotLocation.GetEndPosition() ==
+              17);
+      REQUIRE(objectFunctionNameNode.behaviorFunctionNameLocation.IsValid() ==
+              false);
+      REQUIRE(objectFunctionNameNode.behaviorNameNamespaceSeparatorLocation
+                  .IsValid() == false);
+      REQUIRE(objectFunctionNameNode.objectFunctionOrBehaviorNameLocation
+                  .GetStartPosition() == 19);
+      REQUIRE(objectFunctionNameNode.objectFunctionOrBehaviorNameLocation
+                  .GetEndPosition() == 35);
+    }
+    SECTION("Behavior function name locations") {
+      auto node = parser.ParseExpression(
+          "number", "WhateverObject.WhateverBehavior::WhateverFunction");
+      REQUIRE(node != nullptr);
+      auto &objectFunctionNameNode =
+          dynamic_cast<gd::ObjectFunctionNameNode &>(*node);
+      REQUIRE(objectFunctionNameNode.objectName == "WhateverObject");
+      REQUIRE(objectFunctionNameNode.objectFunctionOrBehaviorName ==
+              "WhateverBehavior");
+      REQUIRE(objectFunctionNameNode.behaviorFunctionName ==
+              "WhateverFunction");
+
+      REQUIRE(objectFunctionNameNode.location.GetStartPosition() == 0);
+      REQUIRE(objectFunctionNameNode.location.GetEndPosition() == 49);
+      REQUIRE(objectFunctionNameNode.objectNameLocation.GetStartPosition() ==
+              0);
+      REQUIRE(objectFunctionNameNode.objectNameLocation.GetEndPosition() == 14);
+      REQUIRE(objectFunctionNameNode.objectNameDotLocation.GetStartPosition() ==
+              14);
+      REQUIRE(objectFunctionNameNode.objectNameDotLocation.GetEndPosition() ==
+              15);
+      REQUIRE(objectFunctionNameNode.objectFunctionOrBehaviorNameLocation
+                  .GetStartPosition() == 15);
+      REQUIRE(objectFunctionNameNode.objectFunctionOrBehaviorNameLocation
+                  .GetEndPosition() == 31);
+      REQUIRE(objectFunctionNameNode.behaviorNameNamespaceSeparatorLocation
+                  .GetStartPosition() == 31);
+      REQUIRE(objectFunctionNameNode.behaviorNameNamespaceSeparatorLocation
+                  .GetEndPosition() == 33);
+      REQUIRE(objectFunctionNameNode.behaviorFunctionNameLocation
+                  .GetStartPosition() == 33);
+      REQUIRE(objectFunctionNameNode.behaviorFunctionNameLocation
+                  .GetEndPosition() == 49);
+    }
+    SECTION("Behavior function name locations (with whitespace)") {
+      auto node = parser.ParseExpression(
+          "number", "WhateverObject.WhateverBehavior  ::  WhateverFunction");
+      REQUIRE(node != nullptr);
+      auto &objectFunctionNameNode =
+          dynamic_cast<gd::ObjectFunctionNameNode &>(*node);
+      REQUIRE(objectFunctionNameNode.objectName == "WhateverObject");
+      REQUIRE(objectFunctionNameNode.objectFunctionOrBehaviorName ==
+              "WhateverBehavior");
+      REQUIRE(objectFunctionNameNode.behaviorFunctionName ==
+              "WhateverFunction");
+
+      REQUIRE(objectFunctionNameNode.location.GetStartPosition() == 0);
+      REQUIRE(objectFunctionNameNode.location.GetEndPosition() == 53);
+      REQUIRE(objectFunctionNameNode.objectNameLocation.GetStartPosition() ==
+              0);
+      REQUIRE(objectFunctionNameNode.objectNameLocation.GetEndPosition() == 14);
+      REQUIRE(objectFunctionNameNode.objectNameDotLocation.GetStartPosition() ==
+              14);
+      REQUIRE(objectFunctionNameNode.objectNameDotLocation.GetEndPosition() ==
+              15);
+      REQUIRE(objectFunctionNameNode.objectFunctionOrBehaviorNameLocation
+                  .GetStartPosition() == 15);
+      REQUIRE(objectFunctionNameNode.objectFunctionOrBehaviorNameLocation
+                  .GetEndPosition() == 31);
+      REQUIRE(objectFunctionNameNode.behaviorNameNamespaceSeparatorLocation
+                  .GetStartPosition() == 33);
+      REQUIRE(objectFunctionNameNode.behaviorNameNamespaceSeparatorLocation
+                  .GetEndPosition() == 35);
+      REQUIRE(objectFunctionNameNode.behaviorFunctionNameLocation
+                  .GetStartPosition() == 37);
+      REQUIRE(objectFunctionNameNode.behaviorFunctionNameLocation
+                  .GetEndPosition() == 53);
+    }
+    SECTION("Invalid/partial expression locations") {
+      {
+        auto node = parser.ParseExpression("number", "3.14159 + ");
+        REQUIRE(node != nullptr);
+        auto &operatorNode = dynamic_cast<gd::OperatorNode &>(*node);
+        REQUIRE(operatorNode.leftHandSide != nullptr);
+        REQUIRE(operatorNode.rightHandSide != nullptr);
+        REQUIRE(operatorNode.location.GetStartPosition() == 0);
+        REQUIRE(operatorNode.location.GetEndPosition() == 10);
+
+        auto &numberNode =
+            dynamic_cast<gd::NumberNode &>(*operatorNode.leftHandSide);
+        auto &emptyNode =
+            dynamic_cast<gd::EmptyNode &>(*operatorNode.rightHandSide);
+        REQUIRE(numberNode.location.GetStartPosition() == 0);
+        REQUIRE(numberNode.location.GetEndPosition() == 7);
+        REQUIRE(emptyNode.location.GetStartPosition() == 10);
+        REQUIRE(emptyNode.location.GetEndPosition() == 10);
+      }
+      {
+        auto node = parser.ParseExpression("number", "\"abcde\" + ");
+        REQUIRE(node != nullptr);
+        auto &operatorNode = dynamic_cast<gd::OperatorNode &>(*node);
+        REQUIRE(operatorNode.leftHandSide != nullptr);
+        REQUIRE(operatorNode.rightHandSide != nullptr);
+        REQUIRE(operatorNode.location.GetStartPosition() == 0);
+        REQUIRE(operatorNode.location.GetEndPosition() == 10);
+
+        auto &textNode =
+            dynamic_cast<gd::TextNode &>(*operatorNode.leftHandSide);
+        auto &emptyNode =
+            dynamic_cast<gd::EmptyNode &>(*operatorNode.rightHandSide);
+        REQUIRE(textNode.location.GetStartPosition() == 0);
+        REQUIRE(textNode.location.GetEndPosition() == 7);
+        REQUIRE(emptyNode.location.GetStartPosition() == 10);
+        REQUIRE(emptyNode.location.GetEndPosition() == 10);
+      }
+    }
+  }
 }

Core/tests/ExpressionParser2Benchmarks.cpp

@@ -0,0 +1,122 @@
+/*
+ * GDevelop Core
+ * Copyright 2008-2016 Florian Rival (Florian.Rival@gmail.com). All rights
+ * reserved. This project is released under the MIT License.
+ */
+#include <chrono>
+#include <numeric>
+#include "DummyPlatform.h"
+#include "GDCore/Events/Parsers/ExpressionParser2.h"
+#include "GDCore/Extensions/Platform.h"
+#include "GDCore/Extensions/PlatformExtension.h"
+#include "GDCore/IDE/Events/ExpressionValidator.h"
+#include "GDCore/Project/Layout.h"
+#include "GDCore/Project/Project.h"
+#include "catch.hpp"
+
+TEST_CASE("ExpressionParser2 - Benchmarks", "[common][events]") {
+  gd::Project project;
+  gd::Platform platform;
+  SetupProjectWithDummyPlatform(project, platform);
+  auto &layout1 = project.InsertNewLayout("Layout1", 0);
+  layout1.InsertNewObject(project, "MyExtension::Sprite", "MySpriteObject", 0);
+
+  gd::ExpressionParser2 parser(platform, project, layout1);
+
+  auto parseExpression = [&parser](const gd::String &expression) {
+    auto parseExpressionWithType = [&parser,
+                                    &expression](const gd::String &type) {
+      auto node = parser.ParseExpression(type, expression);
+      REQUIRE(node != nullptr);
+    };
+
+    parseExpressionWithType("number");
+    parseExpressionWithType("string");
+    parseExpressionWithType("scenevar");
+    parseExpressionWithType("globalvar");
+    parseExpressionWithType("objectvar");
+    parseExpressionWithType("object");
+    parseExpressionWithType("objectPtr");
+    parseExpressionWithType("unknown");
+  };
+
+  auto doBenchmark = [](const gd::String &benchmarkName,
+                        const size_t runsCount,
+                        std::function<void()> func) {
+    std::vector<long long> timesInMicroseconds;
+
+    for (size_t i = 0; i < runsCount; i++) {
+      auto start = std::chrono::steady_clock::now();
+      func();
+      auto end = std::chrono::steady_clock::now();
+
+      timesInMicroseconds.push_back(
+          std::chrono::duration_cast<std::chrono::microseconds>(end - start)
+              .count());
+    }
+
+    std::cout << benchmarkName << " benchmark (" << runsCount << " runs): "
+              << (float)std::accumulate(timesInMicroseconds.begin(),
+                                        timesInMicroseconds.end(),
+                                        0) /
+                     (float)runsCount
+              << " microseconds" << std::endl;
+  };
+
+  SECTION("Parse long expression") {
+    doBenchmark("Parse long expression", 10, [&]() {
+      REQUIRE_NOTHROW(parseExpression(
+          "MySpriteObject.X()+MySpriteObject.X()/cos(3.123456789)+"
+          "MySpriteObject.X()+MySpriteObject.X()/cos(3.123456789)+"
+          "MySpriteObject.X()+MySpriteObject.X()+MySpriteObject.X()/"
+          "cos(3.123456789)+"
+          "MySpriteObject.X()+MySpriteObject.X()/cos(3.123456789)+"
+          "MySpriteObject.X()+MySpriteObject.X()+MySpriteObject.X()/"
+          "cos(3.123456789)+"
+          "MySpriteObject.X()+MySpriteObject.X()/cos(3.123456789)+"
+          "MySpriteObject.X()+MySpriteObject.X()+MySpriteObject.X()/"
+          "cos(3.123456789)+"
+          "MySpriteObject.X()+MySpriteObject.X()/cos(3.123456789)+"
+          "MySpriteObject.X()+MySpriteObject.X()+MySpriteObject.X()/"
+          "cos(3.123456789)+"
+          "MySpriteObject.X()+MySpriteObject.X()/cos(3.123456789)+"
+          "MySpriteObject.X()+MySpriteObject.X()+MySpriteObject.X()/"
+          "cos(3.123456789)+"
+          "MySpriteObject.X()+MySpriteObject.X()/cos(3.123456789)+"
+          "MySpriteObject.X()+MySpriteObject.X()+MySpriteObject.X()/"
+          "cos(3.123456789)+"
+          "MySpriteObject.X()+MySpriteObject.X()/cos(3.123456789)+"
+          "MySpriteObject.X()+MySpriteObject.X()+MySpriteObject.X()/"
+          "cos(3.123456789)+"
+          "MySpriteObject.X()+MySpriteObject.X()/cos(3.123456789)+"
+          "MySpriteObject.X()+MySpriteObject.X()+MySpriteObject.X()/"
+          "cos(3.123456789)+"
+          "MySpriteObject.X()+MySpriteObject.X()/cos(3.123456789)+"
+          "MySpriteObject.X()+MySpriteObject.X()+MySpriteObject.X()/"
+          "cos(3.123456789)+"
+          "MySpriteObject.X()+MySpriteObject.X()/cos(3.123456789)+"
+          "MySpriteObject.X()+MySpriteObject.X()+MySpriteObject.X()/"
+          "cos(3.123456789)+"
+          "MySpriteObject.X()+MySpriteObject.X()/cos(3.123456789)+"
+          "MySpriteObject.X()+MySpriteObject.X()+MySpriteObject.X()/"
+          "cos(3.123456789)+"
+          "MySpriteObject.X()+MySpriteObject.X()/cos(3.123456789)+"
+          "MySpriteObject.X()+MySpriteObject.X()+MySpriteObject.X()/"
+          "cos(3.123456789)+"
+          "MySpriteObject.X()+MySpriteObject.X()/cos(3.123456789)+"
+          "MySpriteObject.X()+MySpriteObject.X()+MySpriteObject.X()/"
+          "cos(3.123456789)+"
+          "MySpriteObject.X()+MySpriteObject.X()/"
+          "cos(3.123456789)+MySpriteObject.X()+0"));
+    });
+  }
+
+  SECTION("Parse long expression") {
+    doBenchmark("Long identifier", 100, [&]() {
+      REQUIRE_NOTHROW(parseExpression(
+          "MyLoooooongIdentifierThatNeverStoooooopsAndContinueAgainAndAgainAndA"
+          "gainAndAgainAndAgainAndAgainAndAgainAndAgainAndAgainAndAgainAndAgain"
+          "AndAgainAndAgainAndAgainAndAgainAndAgainAndAgainAndAgain"));
+    });
+  }
+}

Core/tests/ExpressionParser2NodePrinter.cpp

@@ -176,6 +176,23 @@ TEST_CASE("ExpressionParser2NodePrinter", "[common][events]") {
                 "Idontexist(12, 34, \"56\" + 2)");
   }
 
+  SECTION("Valid function name") {
+    SECTION("Free function") {
+      testPrinter("number", "MyExtension::GetNumber");
+      testPrinter("number", "MyExtension::GetNumberWith2Params");
+      testPrinter("number", "MyExtension::UnknownFunc");
+      testPrinter("number", "UnknownFunc");
+    }
+    SECTION("Object function") {
+      testPrinter("number", "a.b");
+      testPrinter("number", "MySpriteObject.GetObjectNumber");
+      testPrinter("number", "MySpriteObject.MyOtherFunc");
+    }
+    SECTION("Behavior function") {
+      testPrinter("number", "MySpriteObject.MyBehavior::MyFunc");
+    }
+  }
+
   SECTION("Valid variables") {
     testPrinter("scenevar", "myVariable");
     testPrinter("scenevar", "myVariable.myChild");

Core/tests/SceneNameMangler.cpp

@@ -11,16 +11,31 @@
 
 TEST_CASE("SceneNameMangler", "[common]") {
   SECTION("Basics") {
-    REQUIRE(gd::SceneNameMangler::GetMangledSceneName(
+    REQUIRE(gd::SceneNameMangler::Get()->GetMangledSceneName(
                 u8"TotallyCorrectSceneName") == u8"TotallyCorrectSceneName");
-    REQUIRE(gd::SceneNameMangler::GetMangledSceneName(
+    REQUIRE(gd::SceneNameMangler::Get()->GetMangledSceneName(
+                u8"TotallyCorrectSceneName") == u8"TotallyCorrectSceneName");
+    REQUIRE(gd::SceneNameMangler::Get()->GetMangledSceneName(
                 u8"Totally NOT CorrectSceneName") ==
             u8"Totally_32NOT_32CorrectSceneName");
-    REQUIRE(gd::SceneNameMangler::GetMangledSceneName(u8"Nouvelle scène") ==
-            u8"Nouvelle_32sc_232ne");
-    REQUIRE(gd::SceneNameMangler::GetMangledSceneName(u8"A test Ԙ") ==
+    REQUIRE(gd::SceneNameMangler::Get()->GetMangledSceneName(
+                u8"Totally NOT CorrectSceneName") ==
+            u8"Totally_32NOT_32CorrectSceneName");
+    REQUIRE(gd::SceneNameMangler::Get()->GetMangledSceneName(
+                u8"Nouvelle scène") == u8"Nouvelle_32sc_232ne");
+    REQUIRE(gd::SceneNameMangler::Get()->GetMangledSceneName(
+                u8"Nouvelle scène") == u8"Nouvelle_32sc_232ne");
+    REQUIRE(gd::SceneNameMangler::Get()->GetMangledSceneName(u8"A test Ԙ") ==
             u8"A_32test_32_1304");
-    REQUIRE(gd::SceneNameMangler::GetMangledSceneName(u8"1 Nouvelle scène") ==
-            u8"_49_32Nouvelle_32sc_232ne");
+    REQUIRE(gd::SceneNameMangler::Get()->GetMangledSceneName(u8"A test Ԙ") ==
+            u8"A_32test_32_1304");
+    REQUIRE(gd::SceneNameMangler::Get()->GetMangledSceneName(
+                u8"1 Nouvelle scène") == u8"_49_32Nouvelle_32sc_232ne");
+    REQUIRE(gd::SceneNameMangler::Get()->GetMangledSceneName(
+                u8"1 Nouvelle scène") == u8"_49_32Nouvelle_32sc_232ne");
+    REQUIRE(gd::SceneNameMangler::Get()->GetMangledSceneName(
+                u8"汉语") == u8"_27721_35821");
+    REQUIRE(gd::SceneNameMangler::Get()->GetMangledSceneName(
+                u8"汉语") == u8"_27721_35821");
   }
 }

Core/tests/VariableParser.cpp

@@ -1,67 +0,0 @@
-/*
- * GDevelop Core
- * Copyright 2008-2016 Florian Rival (Florian.Rival@gmail.com). All rights
- * reserved. This project is released under the MIT License.
- */
-/**
- * @file Tests covering common features of GDevelop Core.
- */
-#include "GDCore/Events/Parsers/VariableParser.h"
-#include "GDCore/String.h"
-#include "catch.hpp"
-
-namespace {
-class TestVariableParserCallbacks : public gd::VariableParserCallbacks {
- public:
-  TestVariableParserCallbacks(gd::String &debugStr)
-      : VariableParserCallbacks(), debugStr(debugStr) {}
-
-  virtual void OnRootVariable(gd::String variableName) {
-    debugStr += "OnRootVariable(" + variableName + ")\n";
-  }
-
-  virtual void OnChildVariable(gd::String variableName) {
-    debugStr += "OnChildVariable(" + variableName + ")\n";
-  }
-
-  virtual void OnChildSubscript(gd::String stringExpression) {
-    debugStr += "OnChildSubscript(" + stringExpression + ")\n";
-  }
-
- private:
-  gd::String &debugStr;
-};
-}  // namespace
-
-TEST_CASE("VariableParser", "[common][events]") {
-  SECTION("Basics") {
-    {
-      gd::String str;
-      TestVariableParserCallbacks callbacks(str);
-      gd::VariableParser parser("myVar");
-      parser.Parse(callbacks);
-
-      REQUIRE(str == "OnRootVariable(myVar)\n");
-    }
-    {
-      gd::String str;
-      TestVariableParserCallbacks callbacks(str);
-      gd::VariableParser parser("myVar.child1.child2");
-      parser.Parse(callbacks);
-
-      REQUIRE(str ==
-              "OnRootVariable(myVar)\nOnChildVariable(child1)\nOnChildVariable("
-              "child2)\n");
-    }
-    {
-      gd::String str;
-      TestVariableParserCallbacks callbacks(str);
-      gd::VariableParser parser("myVar[ToString(i) + \"é\"].child");
-      parser.Parse(callbacks);
-
-      REQUIRE(str ==
-              "OnRootVariable(myVar)\nOnChildSubscript(ToString(i) + "
-              "\"é\")\nOnChildVariable(child)\n");
-    }
-  }
-}

Core/tests/WholeProjectRefactorer.cpp

@@ -25,6 +25,39 @@
 
 namespace {
 
+gd::StandardEvent &EnsureStandardEvent(gd::BaseEvent &baseEvent) {
+  gd::StandardEvent *standardEvent =
+      dynamic_cast<gd::StandardEvent *>(&baseEvent);
+  INFO("The inspected event is "
+       << (standardEvent ? "a standard event" : "not a standard event"));
+  REQUIRE(standardEvent != nullptr);
+
+  return *standardEvent;
+}
+
+const gd::String &GetEventFirstActionFirstParameterString(
+    gd::BaseEvent &event) {
+  auto &actions = EnsureStandardEvent(event).GetActions();
+  REQUIRE(actions.IsEmpty() == false);
+  REQUIRE(actions.Get(0).GetParametersCount() != 0);
+
+  return actions.Get(0).GetParameter(0).GetPlainString();
+}
+
+const gd::String &GetEventFirstConditionType(gd::BaseEvent &event) {
+  auto &conditions = EnsureStandardEvent(event).GetConditions();
+  REQUIRE(conditions.IsEmpty() == false);
+
+  return conditions.Get(0).GetType();
+}
+
+const gd::String &GetEventFirstActionType(gd::BaseEvent &event) {
+  auto &actions = EnsureStandardEvent(event).GetActions();
+  REQUIRE(actions.IsEmpty() == false);
+
+  return actions.Get(0).GetType();
+}
+
 gd::EventsFunctionsExtension &SetupProjectWithEventsFunctionExtension(
     gd::Project &project) {
   auto &eventsExtension =
@@ -126,8 +159,7 @@ gd::EventsFunctionsExtension &SetupProjectWithEventsFunctionExtension(
       layout.GetEvents().InsertEvent(event);
     }
 
-    // Create an event in the layout referring to
-    // MyEventsExtension::MyEventsBasedBehavior::MyBehaviorEventsFunction
+    // Create an event in the layout using "MyProperty" action
     {
       gd::StandardEvent event;
       gd::Instruction instruction;
@@ -138,6 +170,33 @@ gd::EventsFunctionsExtension &SetupProjectWithEventsFunctionExtension(
       layout.GetEvents().InsertEvent(event);
     }
 
+    // Create an event in the layout using "MyProperty" condition
+    {
+      gd::StandardEvent event;
+      gd::Instruction instruction;
+      instruction.SetType(
+          "MyEventsExtension::MyEventsBasedBehavior::" +
+          gd::EventsBasedBehavior::GetPropertyConditionName("MyProperty"));
+      event.GetConditions().Insert(instruction);
+      layout.GetEvents().InsertEvent(event);
+    }
+
+    // Create an event in the layout using "MyProperty" expression
+    {
+      gd::StandardEvent event;
+      gd::Instruction instruction;
+      instruction.SetType("MyExtension::DoSomething");
+      instruction.SetParametersCount(1);
+      instruction.SetParameter(
+          0,
+          gd::Expression(
+              "ObjectWithMyBehavior.MyBehavior::" +
+              gd::EventsBasedBehavior::GetPropertyExpressionName("MyProperty") +
+              "()"));
+      event.GetActions().Insert(instruction);
+      layout.GetEvents().InsertEvent(event);
+    }
+
     // Create an event in ExternalEvents1 referring to
     // MyEventsExtension::MyEventsBasedBehavior::MyBehaviorEventsFunctionExpression
     {
@@ -148,11 +207,62 @@ gd::EventsFunctionsExtension &SetupProjectWithEventsFunctionExtension(
       instruction.SetParameter(
           0,
           gd::Expression("1 + "
+                         "ObjectWithMyBehavior.MyBehavior::"
+                         "MyBehaviorEventsFunctionExpression(123, 456, 789)"));
+      event.GetActions().Insert(instruction);
+      externalEvents.GetEvents().InsertEvent(event);
+    }
+
+    // Create an event in ExternalEvents1 **wrongly** referring to
+    // MyEventsExtension::MyEventsBasedBehavior::MyBehaviorEventsFunctionExpression
+    // (it's ill-named).
+    {
+      gd::StandardEvent event;
+      gd::Instruction instruction;
+      instruction.SetType("MyExtension::DoSomething");
+      instruction.SetParametersCount(1);
+      instruction.SetParameter(
+          0,
+          gd::Expression("2 + "
                          "ObjectWithMyBehavior::MyBehavior."
                          "MyBehaviorEventsFunctionExpression(123, 456, 789)"));
       event.GetActions().Insert(instruction);
       externalEvents.GetEvents().InsertEvent(event);
     }
+
+    // Create an event in ExternalEvents1 referring to
+    // MyEventsExtension::MyEventsBasedBehavior::MyBehaviorEventsFunctionExpression
+    // function name without calling the function.
+    {
+      gd::StandardEvent event;
+      gd::Instruction instruction;
+      instruction.SetType("MyExtension::DoSomething");
+      instruction.SetParametersCount(1);
+      instruction.SetParameter(
+          0,
+          gd::Expression("3 + "
+                         "ObjectWithMyBehavior.MyBehavior::"
+                         "MyBehaviorEventsFunctionExpression"));
+      event.GetActions().Insert(instruction);
+      externalEvents.GetEvents().InsertEvent(event);
+    }
+
+    // Create an event in ExternalEvents1 **wrongly** referring to
+    // MyEventsExtension::MyEventsBasedBehavior::MyBehaviorEventsFunctionExpression
+    // function name without calling the function (it's ill-named).
+    {
+      gd::StandardEvent event;
+      gd::Instruction instruction;
+      instruction.SetType("MyExtension::DoSomething");
+      instruction.SetParametersCount(1);
+      instruction.SetParameter(
+          0,
+          gd::Expression("4 + "
+                         "ObjectWithMyBehavior::MyBehavior."
+                         "MyBehaviorEventsFunctionExpression"));
+      event.GetActions().Insert(instruction);
+      externalEvents.GetEvents().InsertEvent(event);
+    }
   }
 
   return eventsExtension;
@@ -477,23 +587,16 @@ TEST_CASE("WholeProjectRefactorer", "[common]") {
         project, eventsExtension, "MyEventsExtension", "MyRenamedExtension");
 
     // Check that events function calls in instructions have been renamed
-    REQUIRE(static_cast<gd::StandardEvent &>(
-                project.GetLayout("LayoutWithFreeFunctions")
-                    .GetEvents()
-                    .GetEvent(0))
-                .GetActions()
-                .Get(0)
-                .GetType() == "MyRenamedExtension::MyEventsFunction");
+    REQUIRE(GetEventFirstActionType(project.GetLayout("LayoutWithFreeFunctions")
+                                        .GetEvents()
+                                        .GetEvent(0)) ==
+            "MyRenamedExtension::MyEventsFunction");
 
     // Check that events function calls in expressions have been renamed
-    REQUIRE(static_cast<gd::StandardEvent &>(
+    REQUIRE(GetEventFirstActionFirstParameterString(
                 project.GetExternalEvents("ExternalEventsWithFreeFunctions")
                     .GetEvents()
-                    .GetEvent(0))
-                .GetActions()
-                .Get(0)
-                .GetParameter(0)
-                .GetPlainString() ==
+                    .GetEvent(0)) ==
             "1 + MyRenamedExtension::MyEventsFunctionExpression(123, 456)");
 
     // Check that the type of the behavior was changed in the behaviors of
@@ -506,43 +609,41 @@ TEST_CASE("WholeProjectRefactorer", "[common]") {
                 .GetBehavior("MyBehavior")
                 .GetTypeName() == "MyRenamedExtension::MyEventsBasedBehavior");
 
-    // Check if events based behaviors functions have been renamed in
+    // Check if events-based behavior methods have been renamed in
     // instructions
-    REQUIRE(static_cast<gd::StandardEvent &>(
-                project.GetLayout("LayoutWithBehaviorFunctions")
-                    .GetEvents()
-                    .GetEvent(0))
-                .GetActions()
-                .Get(0)
-                .GetType() ==
-            "MyRenamedExtension::MyEventsBasedBehavior::"
-            "MyBehaviorEventsFunction");
+    REQUIRE(
+        GetEventFirstActionType(project.GetLayout("LayoutWithBehaviorFunctions")
+                                    .GetEvents()
+                                    .GetEvent(0)) ==
+        "MyRenamedExtension::MyEventsBasedBehavior::"
+        "MyBehaviorEventsFunction");
 
-    // Check if events based behaviors properties have been renamed in
+    // Check if events-based behaviors properties have been renamed in
     // instructions
-    REQUIRE(static_cast<gd::StandardEvent &>(
-                project.GetLayout("LayoutWithBehaviorFunctions")
-                    .GetEvents()
-                    .GetEvent(1))
-                .GetActions()
-                .Get(0)
-                .GetType() ==
-            "MyRenamedExtension::MyEventsBasedBehavior::"
-            "SetPropertyMyProperty");
+    REQUIRE(
+        GetEventFirstActionType(project.GetLayout("LayoutWithBehaviorFunctions")
+                                    .GetEvents()
+                                    .GetEvent(1)) ==
+        "MyRenamedExtension::MyEventsBasedBehavior::"
+        "SetPropertyMyProperty");
 
-    // Check events based behaviors functions have *not* been renamed in
+    // Check events-based behavior methods have *not* been renamed in
     // expressions
-    REQUIRE(static_cast<gd::StandardEvent &>(
+    REQUIRE(GetEventFirstActionFirstParameterString(
                 project.GetExternalEvents("ExternalEventsWithBehaviorFunctions")
                     .GetEvents()
-                    .GetEvent(0))
-                .GetActions()
-                .Get(0)
-                .GetParameter(0)
-                .GetPlainString() ==
+                    .GetEvent(0)) ==
             "1 + "
-            "ObjectWithMyBehavior::MyBehavior."
+            "ObjectWithMyBehavior.MyBehavior::"
             "MyBehaviorEventsFunctionExpression(123, 456, 789)");
+
+    REQUIRE(GetEventFirstActionFirstParameterString(
+                project.GetExternalEvents("ExternalEventsWithBehaviorFunctions")
+                    .GetEvents()
+                    .GetEvent(2)) ==
+            "3 + "
+            "ObjectWithMyBehavior.MyBehavior::"
+            "MyBehaviorEventsFunctionExpression");
   }
   SECTION("(Free) events function renamed") {
     gd::Project project;
@@ -561,23 +662,16 @@ TEST_CASE("WholeProjectRefactorer", "[common]") {
         "MyRenamedFunctionExpression");
 
     // Check that events function calls in instructions have been renamed
-    REQUIRE(static_cast<gd::StandardEvent &>(
-                project.GetLayout("LayoutWithFreeFunctions")
-                    .GetEvents()
-                    .GetEvent(0))
-                .GetActions()
-                .Get(0)
-                .GetType() == "MyEventsExtension::MyRenamedEventsFunction");
+    REQUIRE(GetEventFirstActionType(project.GetLayout("LayoutWithFreeFunctions")
+                                        .GetEvents()
+                                        .GetEvent(0)) ==
+            "MyEventsExtension::MyRenamedEventsFunction");
 
     // Check that events function calls in expressions have been renamed
-    REQUIRE(static_cast<gd::StandardEvent &>(
+    REQUIRE(GetEventFirstActionFirstParameterString(
                 project.GetExternalEvents("ExternalEventsWithFreeFunctions")
                     .GetEvents()
-                    .GetEvent(0))
-                .GetActions()
-                .Get(0)
-                .GetParameter(0)
-                .GetPlainString() ==
+                    .GetEvent(0)) ==
             "1 + MyEventsExtension::MyRenamedFunctionExpression(123, 456)");
   }
   SECTION("(Free) events function parameter moved") {
@@ -586,36 +680,27 @@ TEST_CASE("WholeProjectRefactorer", "[common]") {
     SetupProjectWithDummyPlatform(project, platform);
     auto &eventsExtension = SetupProjectWithEventsFunctionExtension(project);
 
-    gd::WholeProjectRefactorer::MoveEventsFunctionParameter(project,
-                                                     eventsExtension,
-                                                     "MyEventsFunction",
-                                                     0, 2);
     gd::WholeProjectRefactorer::MoveEventsFunctionParameter(
-        project,
-        eventsExtension,
-        "MyEventsFunctionExpression",
-        0, 1);
+        project, eventsExtension, "MyEventsFunction", 0, 2);
+    gd::WholeProjectRefactorer::MoveEventsFunctionParameter(
+        project, eventsExtension, "MyEventsFunctionExpression", 0, 1);
 
     // Check that events function calls in instructions have been updated
-    auto& action = static_cast<gd::StandardEvent &>(
-                project.GetLayout("LayoutWithFreeFunctions")
-                    .GetEvents()
-                    .GetEvent(0))
-                .GetActions()
-                .Get(0);
+    auto &action = static_cast<gd::StandardEvent &>(
+                       project.GetLayout("LayoutWithFreeFunctions")
+                           .GetEvents()
+                           .GetEvent(0))
+                       .GetActions()
+                       .Get(0);
     REQUIRE(action.GetParameter(0).GetPlainString() == "Second parameter");
     REQUIRE(action.GetParameter(1).GetPlainString() == "Third parameter");
     REQUIRE(action.GetParameter(2).GetPlainString() == "First parameter");
 
     // Check that events function calls in expressions have been updated
-    REQUIRE(static_cast<gd::StandardEvent &>(
+    REQUIRE(GetEventFirstActionFirstParameterString(
                 project.GetExternalEvents("ExternalEventsWithFreeFunctions")
                     .GetEvents()
-                    .GetEvent(0))
-                .GetActions()
-                .Get(0)
-                .GetParameter(0)
-                .GetPlainString() ==
+                    .GetEvent(0)) ==
             "1 + MyEventsExtension::MyEventsFunctionExpression(456, 123)");
   }
   SECTION("Events based Behavior type renamed") {
@@ -644,42 +729,32 @@ TEST_CASE("WholeProjectRefactorer", "[common]") {
                 .GetTypeName() ==
             "MyEventsExtension::MyRenamedEventsBasedBehavior");
 
-    // Check if events based behaviors functions have been renamed in
+    // Check if events-based behavior methods have been renamed in
     // instructions
-    REQUIRE(static_cast<gd::StandardEvent &>(
-                project.GetLayout("LayoutWithBehaviorFunctions")
-                    .GetEvents()
-                    .GetEvent(0))
-                .GetActions()
-                .Get(0)
-                .GetType() ==
-            "MyEventsExtension::MyRenamedEventsBasedBehavior::"
-            "MyBehaviorEventsFunction");
+    REQUIRE(
+        GetEventFirstActionType(project.GetLayout("LayoutWithBehaviorFunctions")
+                                    .GetEvents()
+                                    .GetEvent(0)) ==
+        "MyEventsExtension::MyRenamedEventsBasedBehavior::"
+        "MyBehaviorEventsFunction");
 
-    // Check if events based behaviors properties have been renamed in
+    // Check if events-based behaviors properties have been renamed in
     // instructions
-    REQUIRE(static_cast<gd::StandardEvent &>(
-                project.GetLayout("LayoutWithBehaviorFunctions")
-                    .GetEvents()
-                    .GetEvent(1))
-                .GetActions()
-                .Get(0)
-                .GetType() ==
-            "MyEventsExtension::MyRenamedEventsBasedBehavior::"
-            "SetPropertyMyProperty");
+    REQUIRE(
+        GetEventFirstActionType(project.GetLayout("LayoutWithBehaviorFunctions")
+                                    .GetEvents()
+                                    .GetEvent(1)) ==
+        "MyEventsExtension::MyRenamedEventsBasedBehavior::"
+        "SetPropertyMyProperty");
 
-    // Check events based behaviors functions have *not* been renamed in
+    // Check events-based behavior methods have *not* been renamed in
     // expressions
-    REQUIRE(static_cast<gd::StandardEvent &>(
+    REQUIRE(GetEventFirstActionFirstParameterString(
                 project.GetExternalEvents("ExternalEventsWithBehaviorFunctions")
                     .GetEvents()
-                    .GetEvent(0))
-                .GetActions()
-                .Get(0)
-                .GetParameter(0)
-                .GetPlainString() ==
+                    .GetEvent(0)) ==
             "1 + "
-            "ObjectWithMyBehavior::MyBehavior."
+            "ObjectWithMyBehavior.MyBehavior::"
             "MyBehaviorEventsFunctionExpression(123, 456, 789)");
   }
   SECTION("(Events based Behavior) events function renamed") {
@@ -703,31 +778,54 @@ TEST_CASE("WholeProjectRefactorer", "[common]") {
         "MyBehaviorEventsFunctionExpression",
         "MyRenamedBehaviorEventsFunctionExpression");
 
-    // Check if events based behaviors functions have been renamed in
+    // Check if events-based behavior methods have been renamed in
     // instructions
-    REQUIRE(static_cast<gd::StandardEvent &>(
-                project.GetLayout("LayoutWithBehaviorFunctions")
-                    .GetEvents()
-                    .GetEvent(0))
-                .GetActions()
-                .Get(0)
-                .GetType() ==
-            "MyEventsExtension::MyEventsBasedBehavior::"
-            "MyRenamedBehaviorEventsFunction");
+    REQUIRE(
+        GetEventFirstActionType(project.GetLayout("LayoutWithBehaviorFunctions")
+                                    .GetEvents()
+                                    .GetEvent(0)) ==
+        "MyEventsExtension::MyEventsBasedBehavior::"
+        "MyRenamedBehaviorEventsFunction");
 
-    // Check events based behaviors functions have been renamed in
+    // Check events-based behavior methods have been renamed in
     // expressions
-    REQUIRE(static_cast<gd::StandardEvent &>(
+    REQUIRE(GetEventFirstActionFirstParameterString(
                 project.GetExternalEvents("ExternalEventsWithBehaviorFunctions")
                     .GetEvents()
-                    .GetEvent(0))
-                .GetActions()
-                .Get(0)
-                .GetParameter(0)
-                .GetPlainString() ==
+                    .GetEvent(0)) ==
             "1 + "
-            "ObjectWithMyBehavior::MyBehavior."
+            "ObjectWithMyBehavior.MyBehavior::"
             "MyRenamedBehaviorEventsFunctionExpression(123, 456, 789)");
+
+    // Check that a ill-named function that looks a bit like a behavior method
+    // (but which is actually an object function) is *not* renamed.
+    REQUIRE(GetEventFirstActionFirstParameterString(
+                project.GetExternalEvents("ExternalEventsWithBehaviorFunctions")
+                    .GetEvents()
+                    .GetEvent(1)) ==
+            "2 + "
+            "ObjectWithMyBehavior::MyBehavior."
+            "MyBehaviorEventsFunctionExpression(123, 456, 789)");
+
+    // Check events based behaviors functions have been renamed in
+    // expressions referring to the function with just its name
+    REQUIRE(GetEventFirstActionFirstParameterString(
+                project.GetExternalEvents("ExternalEventsWithBehaviorFunctions")
+                    .GetEvents()
+                    .GetEvent(2)) ==
+            "3 + "
+            "ObjectWithMyBehavior.MyBehavior::"
+            "MyRenamedBehaviorEventsFunctionExpression");
+
+    // Check that a ill-named function that looks a bit like a behavior method
+    // (but which is actually an object function) is *not* renamed.
+    REQUIRE(GetEventFirstActionFirstParameterString(
+                project.GetExternalEvents("ExternalEventsWithBehaviorFunctions")
+                    .GetEvents()
+                    .GetEvent(3)) ==
+            "4 + "
+            "ObjectWithMyBehavior::MyBehavior."
+            "MyBehaviorEventsFunctionExpression");
   }
   SECTION("(Events based Behavior) events function parameter moved") {
     gd::Project project;
@@ -742,39 +840,47 @@ TEST_CASE("WholeProjectRefactorer", "[common]") {
         eventsExtension,
         eventsBasedBehavior,
         "MyBehaviorEventsFunction",
-        0, 2);
+        0,
+        2);
     gd::WholeProjectRefactorer::MoveBehaviorEventsFunctionParameter(
         project,
         eventsExtension,
         eventsBasedBehavior,
         "MyBehaviorEventsFunctionExpression",
-        0, 2);
+        0,
+        2);
 
-    // Check if events based behaviors functions have been renamed in
+    // Check if parameters of events-based behavior methods have been moved in
     // instructions
-    auto& action = static_cast<gd::StandardEvent &>(
-                project.GetLayout("LayoutWithBehaviorFunctions")
-                    .GetEvents()
-                    .GetEvent(0))
-                .GetActions()
-                .Get(0);
+    auto &action = static_cast<gd::StandardEvent &>(
+                       project.GetLayout("LayoutWithBehaviorFunctions")
+                           .GetEvents()
+                           .GetEvent(0))
+                       .GetActions()
+                       .Get(0);
     REQUIRE(action.GetParameter(0).GetPlainString() == "Second parameter");
     REQUIRE(action.GetParameter(1).GetPlainString() == "Third parameter");
     REQUIRE(action.GetParameter(2).GetPlainString() == "First parameter");
 
-    // Check events based behaviors functions have been renamed in
+    // Check parameters of events-based behavior methods have been moved in
     // expressions
-    REQUIRE(static_cast<gd::StandardEvent &>(
+    REQUIRE(GetEventFirstActionFirstParameterString(
                 project.GetExternalEvents("ExternalEventsWithBehaviorFunctions")
                     .GetEvents()
-                    .GetEvent(0))
-                .GetActions()
-                .Get(0)
-                .GetParameter(0)
-                .GetPlainString() ==
+                    .GetEvent(0)) ==
             "1 + "
-            "ObjectWithMyBehavior::MyBehavior."
+            "ObjectWithMyBehavior.MyBehavior::"
             "MyBehaviorEventsFunctionExpression(456, 789, 123)");
+
+    // Check that a ill-named function that looks a bit like a behavior method
+    // (but which is actually a free function) has its parameter *not* moved.
+    REQUIRE(GetEventFirstActionFirstParameterString(
+                project.GetExternalEvents("ExternalEventsWithBehaviorFunctions")
+                    .GetEvents()
+                    .GetEvent(1)) ==
+            "2 + "
+            "ObjectWithMyBehavior::MyBehavior."
+            "MyBehaviorEventsFunctionExpression(123, 456, 789)");
   }
   SECTION("(Events based Behavior) property renamed") {
     gd::Project project;
@@ -790,16 +896,26 @@ TEST_CASE("WholeProjectRefactorer", "[common]") {
                                                        "MyProperty",
                                                        "MyRenamedProperty");
 
-    // Check if events based behaviors property has been renamed in
+    // Check if events-based behaviors property has been renamed in
     // instructions
-    REQUIRE(static_cast<gd::StandardEvent &>(
+    REQUIRE(
+        GetEventFirstActionType(project.GetLayout("LayoutWithBehaviorFunctions")
+                                    .GetEvents()
+                                    .GetEvent(1)) ==
+        "MyEventsExtension::MyEventsBasedBehavior::"
+        "SetPropertyMyRenamedProperty");
+
+    REQUIRE(GetEventFirstConditionType(
                 project.GetLayout("LayoutWithBehaviorFunctions")
                     .GetEvents()
-                    .GetEvent(1))
-                .GetActions()
-                .Get(0)
-                .GetType() ==
+                    .GetEvent(2)) ==
             "MyEventsExtension::MyEventsBasedBehavior::"
-            "SetPropertyMyRenamedProperty");
+            "PropertyMyRenamedProperty");
+
+    REQUIRE(GetEventFirstActionFirstParameterString(
+                project.GetLayout("LayoutWithBehaviorFunctions")
+                    .GetEvents()
+                    .GetEvent(3)) ==
+            "ObjectWithMyBehavior.MyBehavior::PropertyMyRenamedProperty()");
   }
 }

ExtLibs/CMakeLists.txt

@@ -1,6 +1,8 @@
-#Clone SFML from its official directory using Git
+# Clone SFML from its official directory using Git. Only
+# do it if not already cloned to avoid triggering a whole
+# recompilation every time CMake is run.
 find_package(Git)
-if(GIT_FOUND)
+if(GIT_FOUND AND NOT EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/SFML/readme.txt")
 	message( "Cloning SFML in ExtLibs/SFML with Git..." )
 	execute_process(
 		COMMAND ${GIT_EXECUTABLE} clone "https://www.github.com/SFML/SFML.git" SFML
@@ -11,7 +13,7 @@ if(GIT_FOUND)
 	execute_process(
 		COMMAND ${GIT_EXECUTABLE} reset --hard 2.4.1
 		WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/SFML
-		OUTPUT_QUIET) 
+		OUTPUT_QUIET)
 
 	message( "Applying the patches..." )
 	file(GLOB SFML_PATCHES