| AngelScript

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asIScriptEngine Class Referenceabstract

The engine interface. More...

## Public Member Functions
Memory management
virtual int | AddRef () const =0
| Increase reference counter. More...
virtual int | Release () const =0
| Decrease reference counter. More...
Engine properties
virtual int | SetEngineProperty (asEEngineProp property, asPWORD value)=0
| Dynamically change some engine properties. More...
virtual asPWORD | GetEngineProperty (asEEngineProp property) const =0
| Retrieve current engine property settings. More...
Compiler messages
virtual int | SetMessageCallback (const asSFuncPtr &callback, void *obj, asDWORD callConv)=0
| Sets a message callback that will receive compiler messages. More...
virtual int | ClearMessageCallback ()=0
| Clears the registered message callback routine. More...
virtual int | WriteMessage (const char *section, int row, int col, asEMsgType type, const char *message)=0
| Writes a message to the message callback. More...
JIT compiler
virtual int | SetJITCompiler (asIJITCompiler *compiler)=0
| Sets the JIT compiler. More...
virtual asIJITCompiler * | GetJITCompiler () const =0
| Returns the JIT compiler. More...
Global functions
virtual int | RegisterGlobalFunction (const char *declaration, const asSFuncPtr &funcPointer, asDWORD callConv, void *objForThiscall=0)=0
| Registers a global function. More...
virtual asUINT | GetGlobalFunctionCount () const =0
| Returns the number of registered functions. More...
virtual asIScriptFunction * | GetGlobalFunctionByIndex (asUINT index) const =0
| Returns the registered function. More...
virtual asIScriptFunction * | GetGlobalFunctionByDecl (const char *declaration) const =0
| Returns the registered function. More...
Global properties
virtual int | RegisterGlobalProperty (const char *declaration, void *pointer)=0
| Registers a global property. More...
virtual asUINT | GetGlobalPropertyCount () const =0
| Returns the number of registered global properties. More...
virtual int | GetGlobalPropertyByIndex (asUINT index, const char **name, const char **nameSpace=0, int *typeId=0, bool *isConst=0, const char **configGroup=0, void **pointer=0, asDWORD *accessMask=0) const =0
| Returns the detail on the registered global property. More...
virtual int | GetGlobalPropertyIndexByName (const char *name) const =0
| Returns the index of the property. More...
virtual int | GetGlobalPropertyIndexByDecl (const char *decl) const =0
| Returns the index of the property. More...
Object types
virtual int | RegisterObjectType (const char *obj, int byteSize, asDWORD flags)=0
| Registers a new object type. More...
virtual int | RegisterObjectProperty (const char *obj, const char *declaration, int byteOffset)=0
| Registers a property for the object type. More...
virtual int | RegisterObjectMethod (const char *obj, const char *declaration, const asSFuncPtr &funcPointer, asDWORD callConv, void *objForThiscall=0)=0
| Registers a method for the object type. More...
virtual int | RegisterObjectBehaviour (const char *obj, asEBehaviours behaviour, const char *declaration, const asSFuncPtr &funcPointer, asDWORD callConv, void *objForThiscall=0)=0
| Registers a behaviour for the object type. More...
virtual int | RegisterInterface (const char *name)=0
| Registers a script interface. More...
virtual int | RegisterInterfaceMethod (const char *intf, const char *declaration)=0
| Registers a script interface method. More...
virtual asUINT | GetObjectTypeCount () const =0
| Returns the number of registered object types. More...
virtual asIObjectType * | GetObjectTypeByIndex (asUINT index) const =0
| Returns the object type interface by index. More...
virtual asIObjectType * | GetObjectTypeByName (const char *name) const =0
| Returns a matching object type by name. More...
virtual asIObjectType * | GetObjectTypeByDecl (const char *decl) const =0
| Returns an object type by declaration. More...
String factory
virtual int | RegisterStringFactory (const char *datatype, const asSFuncPtr &factoryFunc, asDWORD callConv, void *objForThiscall=0)=0
| Registers the string factory. More...
virtual int | GetStringFactoryReturnTypeId (asDWORD *flags=0) const =0
| Returns the type id of the type that the string factory returns. More...
Default array type
virtual int | RegisterDefaultArrayType (const char *type)=0
| Registers the type that should be used as the default array. More...
virtual int | GetDefaultArrayTypeId () const =0
| Returns the type id of the registered type. More...
Enums
virtual int | RegisterEnum (const char *type)=0
| Registers an enum type. More...
virtual int | RegisterEnumValue (const char *type, const char *name, int value)=0
| Registers an enum value. More...
virtual asUINT | GetEnumCount () const =0
| Returns the number of registered enum types. More...
virtual const char * | GetEnumByIndex (asUINT index, int *enumTypeId, const char **nameSpace=0, const char **configGroup=0, asDWORD *accessMask=0) const =0
| Returns the registered enum type. More...
virtual int | GetEnumValueCount (int enumTypeId) const =0
| Returns the number of enum values for the enum type. More...
virtual const char * | GetEnumValueByIndex (int enumTypeId, asUINT index, int *outValue) const =0
| Returns the name and value of the enum value for the enum type. More...
Funcdefs
virtual int | RegisterFuncdef (const char *decl)=0
| Registers a function definition. More...
virtual asUINT | GetFuncdefCount () const =0
| Returns the number of registered function definitions. More...
virtual asIScriptFunction * | GetFuncdefByIndex (asUINT index) const =0
| Returns a registered function definition. More...
Typedefs
virtual int | RegisterTypedef (const char *type, const char *decl)=0
| Registers a typedef. More...
virtual asUINT | GetTypedefCount () const =0
| Returns the number of registered typedefs. More...
virtual const char * | GetTypedefByIndex (asUINT index, int *typeId, const char **nameSpace=0, const char **configGroup=0, asDWORD *accessMask=0) const =0
| Returns a registered typedef. More...
Configuration groups
virtual int | BeginConfigGroup (const char *groupName)=0
| Starts a new dynamic configuration group. More...
virtual int | EndConfigGroup ()=0
| Ends the configuration group. More...
virtual int | RemoveConfigGroup (const char *groupName)=0
| Removes a previously registered configuration group. More...
virtual asDWORD | SetDefaultAccessMask (asDWORD defaultMask)=0
| Sets the access mask that should be used for subsequent registered entities. More...
virtual int | SetDefaultNamespace (const char *nameSpace)=0
| Sets the current default namespace for registrations and searches. More...
virtual const char * | GetDefaultNamespace () const =0
| Returns the current default namespace. More...
Script modules
virtual asIScriptModule * | GetModule (const char *module, asEGMFlags flag=asGM_ONLY_IF_EXISTS)=0
| Return an interface pointer to the module. More...
virtual int | DiscardModule (const char *module)=0
| Discard a module. More...
virtual asUINT | GetModuleCount () const =0
| Get the number of modules. More...
virtual asIScriptModule * | GetModuleByIndex (asUINT index) const =0
| Get a module by index. More...
Script functions
virtual asIScriptFunction * | GetFunctionById (int funcId) const =0
| Returns the function by its id. More...
virtual asIScriptFunction * | GetFuncDefFromTypeId (int typeId) const =0
| Returns the function description for the funcdef. More...
Type identification
virtual asIObjectType * | GetObjectTypeById (int typeId) const =0
| Returns the object type interface for type. More...
virtual int | GetTypeIdByDecl (const char *decl) const =0
| Returns a type id by declaration. More...
virtual const char * | GetTypeDeclaration (int typeId, bool includeNamespace=false) const =0
| Returns a type declaration. More...
virtual int | GetSizeOfPrimitiveType (int typeId) const =0
| Returns the size of a primitive type. More...
Script execution
virtual asIScriptContext * | CreateContext ()=0
| Creates a new script context. More...
virtual void * | CreateScriptObject (const asIObjectType *type)=0
| Creates an object defined by its type. More...
virtual void * | CreateScriptObjectCopy (void *obj, const asIObjectType *type)=0
| Creates a copy of a script object. More...
virtual void * | CreateUninitializedScriptObject (const asIObjectType *type)=0
| Creates an uninitialized script object defined by its type. More...
virtual asIScriptFunction * | CreateDelegate (asIScriptFunction *func, void *obj)=0
| Create a delegate for an object and method. More...
virtual void | AssignScriptObject (void *dstObj, void *srcObj, const asIObjectType *type)=0
| Copy one script object to another. More...
virtual void | ReleaseScriptObject (void *obj, const asIObjectType *type)=0
| Release the object pointer. More...
virtual void | AddRefScriptObject (void *obj, const asIObjectType *type)=0
| Increase the reference counter for the script object. More...
virtual bool | IsHandleCompatibleWithObject (void *obj, int objTypeId, int handleTypeId) const =0
| Returns true if the object referenced by a handle compatible with the specified type. More...
virtual asILockableSharedBool * | GetWeakRefFlagOfScriptObject (void *obj, const asIObjectType *type) const =0
| Returns the weak ref flag from the object. More...
Context pooling
virtual asIScriptContext * | RequestContext ()=0
| Request a context. More...
virtual void | ReturnContext (asIScriptContext *ctx)=0
| Return a context when it won't be used anymore. More...
virtual int | SetContextCallbacks (asREQUESTCONTEXTFUNC_t requestCtx, asRETURNCONTEXTFUNC_t returnCtx, void *param=0)=0
| Register context callbacks for pooling. More...
String interpretation
virtual asETokenClass | ParseToken (const char *string, size_t stringLength=0, int *tokenLength=0) const =0
| Returns the class and length of the first token in the string. More...
Garbage collection
virtual int | GarbageCollect (asDWORD flags=asGC_FULL_CYCLE, asUINT numIterations=1)=0
| Perform garbage collection. More...
virtual void | GetGCStatistics (asUINT *currentSize, asUINT *totalDestroyed=0, asUINT *totalDetected=0, asUINT *newObjects=0, asUINT *totalNewDestroyed=0) const =0
| Obtain statistics from the garbage collector. More...
virtual int | NotifyGarbageCollectorOfNewObject (void *obj, asIObjectType *type)=0
| Notify the garbage collector of a new object that needs to be managed. More...
virtual int | GetObjectInGC (asUINT idx, asUINT *seqNbr=0, void **obj=0, asIObjectType **type=0)=0
| Gets an object in the garbage collector. More...
virtual void | GCEnumCallback (void *reference)=0
| Used by the garbage collector to enumerate all references held by an object. More...
User data
virtual void * | SetUserData (void *data, asPWORD type=0)=0
| Register the memory address of some user data. More...
virtual void * | GetUserData (asPWORD type=0) const =0
| Returns the address of the previously registered user data. More...
virtual void | SetEngineUserDataCleanupCallback (asCLEANENGINEFUNC_t callback, asPWORD type=0)=0
| Set the function that should be called when the engine is destroyed. More...
virtual void | SetModuleUserDataCleanupCallback (asCLEANMODULEFUNC_t callback, asPWORD type=0)=0
| Set the function that should be called when the module is destroyed. More...
virtual void | SetContextUserDataCleanupCallback (asCLEANCONTEXTFUNC_t callback, asPWORD type=0)=0
| Set the function that should be called when a context is destroyed. More...
virtual void | SetFunctionUserDataCleanupCallback (asCLEANFUNCTIONFUNC_t callback, asPWORD type=0)=0
| Set the function that should be called when a function is destroyed. More...
virtual void | SetObjectTypeUserDataCleanupCallback (asCLEANOBJECTTYPEFUNC_t callback, asPWORD type=0)=0
| Set the function that should be called when an object type is destroyed. More...

## Detailed Description

The engine is the central object. It is where the application registers the application interface that the scripts should be able to use, and it is where the application can request modules to build scripts and contexts to execute them.

The engine instance is created with a call to asCreateScriptEngine.

It is allowed to have multiple instances of script engines, but there is rarely a need for it. Even if the application needs to expose different interfaces to different types of scripts this can usually be accomplished through the use of configuration groups and access profiles.

## Member Function Documentation

virtual int asIScriptEngine::AddRef | ( |  | ) | const
| pure virtual

Returns
  The number of references to this object.

Call this method when storing an additional reference to the object. Remember that the first reference that is received from asCreateScriptEngine is already accounted for.

virtual void asIScriptEngine::AddRefScriptObject | ( | void * | obj,
|  | const asIObjectType * | type
| ) |  |
| pure virtual

Parameters

  [in] | obj | A pointer to the object.
  [in] | type | The type of the object.

This calls the add ref method of the object to increase the reference count.

virtual void asIScriptEngine::AssignScriptObject | ( | void * | dstObj,
|  | void * | srcObj,
|  | const asIObjectType * | type
| ) |  |
| pure virtual

Parameters

  [in] | dstObj | A pointer to the destination object.
  [in] | srcObj | A pointer to the source object.
  [in] | type | The type of the objects.

This calls the assignment operator to copy the object from one to the other.

This only works for objects.

virtual int asIScriptEngine::BeginConfigGroup | ( | const char * | groupName | ) |
| pure virtual

Parameters

  [in] | groupName | The name of the configuration group

Returns
  A negative value on error

Return values

  asNAME_TAKEN | Another group with the same name already exists.
  asNOT_SUPPORTED | Nesting configuration groups is not supported.

Starts a new dynamic configuration group. This group can be setup so that it is only visible to specific modules, and it can also be removed when it is no longer used.

See Also
  Dynamic configurations

virtual int asIScriptEngine::ClearMessageCallback | ( |  | ) |
| pure virtual

Returns
  A negative value on error.

Call this method to remove the message callback.

virtual asIScriptContext* asIScriptEngine::CreateContext | ( |  | ) |
| pure virtual

Returns
  A pointer to the new script context.

This method creates a context that will be used to execute the script functions. The context interface created will have its reference counter already increased.

See Also
  RequestContext

virtual asIScriptFunction* asIScriptEngine::CreateDelegate | ( | asIScriptFunction * | func,
|  | void * | obj
| ) |  |
| pure virtual

Parameters

  [in] | func | The object method
  [in] | obj | The object pointer

Returns
  The new delegate instance

virtual void* asIScriptEngine::CreateScriptObject | ( | const asIObjectType * | type | ) |
| pure virtual

Parameters

  [in] | type | The type of the object to create.

Returns
  A pointer to the new object if successful, or null if not.

This method is used to create an object based on it's type. The method will call the object type's default factory. If the object type doesn't have a default factory the call will fail and no object will be created.

Created objects will have their reference counter set to 1 so the application needs to release the pointer when it will no longer use it.

If the type is a registered value type, then the memory for the object will be allocated using the default memory routine. To destroy and and deallocate the object it is best to use ReleaseScriptObject.

The method only works for objects, for primitive types and object handles the method doesn't do anything and returns a null pointer.

virtual void* asIScriptEngine::CreateScriptObjectCopy | ( | void * | obj,
|  | const asIObjectType * | type
| ) |  |
| pure virtual

Parameters

  [in] | obj | A pointer to the source object.
  [in] | type | The type of the object.

Returns
  A pointer to the new object if successful, or null if not.

This method is used to create a copy of an existing object.

This only works for objects, for primitive types and object handles the method doesn't do anything and returns a null pointer.

virtual void* asIScriptEngine::CreateUninitializedScriptObject | ( | const asIObjectType * | type | ) |
| pure virtual

Parameters

  [in] | type | The type of the object to create.

Returns
  A pointer to the new object if successful, or null if not.

This method can only be used to create instances of script classes.

The returned object will only be initialized so far that there are no invalid pointers or references. The constructor of the script class will not be invoked.

If the script class has any registered types as members, the default constructor for those members will be executed.

This method is meant for objects that will be initialized manually by the application, e.g. when restoring a serialized object.

virtual int asIScriptEngine::DiscardModule | ( | const char * | module | ) |
| pure virtual

Parameters

  [in] | module | The name of the module

Returns
  A negative value on error

Return values

  asNO_MODULE | The module was not found.

Discards a module and frees its memory. Any pointers that the application holds to this module will be invalid after this call.

virtual int asIScriptEngine::EndConfigGroup | ( |  | ) |
| pure virtual

Returns
  A negative value on error

Return values

  asERROR | Can't end a group that hasn't been begun.

Ends the current configuration group. Once finished a config group cannot be changed, but it can be removed when it is no longer used.

See Also
  Dynamic configurations

virtual int asIScriptEngine::GarbageCollect | ( | asDWORD | flags = `asGC_FULL_CYCLE`,
|  | asUINT | numIterations = `1`
| ) |  |
| pure virtual

Parameters

  [in] | flags | Set to a combination of the asEGCFlags.
  [in] | numIterations | The number of iterations to perform when not doing a full cycle

Returns
  1 if the cycle wasn't completed, 0 if it was.

This method will free script objects that can no longer be reached. When the engine is released the garbage collector will automatically do a full cycle to release all objects still alive. If the engine is long living it is important to call this method every once in a while to free up memory allocated by the scripts. If a script does a lot of allocations before returning it may be necessary to implement a line callback function that calls the garbage collector during execution of the script.

It is not necessary to do a full cycle with every call. This makes it possible to spread out the garbage collection time over a large period, thus not impacting the responsiveness of the application.

See Also
  Garbage collection

virtual void asIScriptEngine::GCEnumCallback | ( | void * | reference | ) |
| pure virtual

Parameters

  [in] | reference | A pointer to the referenced object.

When processing the EnumReferences call the called object should call GCEnumCallback for each of the references it holds to other objects.

See Also
  Garbage collected objects

virtual int asIScriptEngine::GetDefaultArrayTypeId | ( |  | ) | const
| pure virtual

Returns
  The type id, or a negative value on error.

Return values

  asINVALID_TYPE | The default array type hasn't been registered.

virtual const char* asIScriptEngine::GetDefaultNamespace | ( |  | ) | const
| pure virtual

Returns
  The current default namespace

virtual asPWORD asIScriptEngine::GetEngineProperty | ( | asEEngineProp | property | ) | const
| pure virtual

Parameters

  [in] | property | One of the asEEngineProp values.

Returns
  The value of the property, or 0 if it is an invalid property.

Calling this method lets you determine the current value of the engine properties.

virtual const char* asIScriptEngine::GetEnumByIndex | ( | asUINT | index,
|  | int * | enumTypeId,
|  | const char ** | nameSpace = `0`,
|  | const char ** | configGroup = `0`,
|  | asDWORD * | accessMask = `0`
| ) |  | const
| pure virtual

Parameters

  [in] | index | The index of the enum type.
  [out] | enumTypeId | Receives the type if of the enum type.
  [out] | nameSpace | Receives the namespace of the enum.
  [out] | configGroup | Receives the config group in which the enum was registered.
  [out] | accessMask | Receives the access mask of the enum.

Returns
  The name of the registered enum type, or null on error.

virtual asUINT asIScriptEngine::GetEnumCount | ( |  | ) | const
| pure virtual

Returns
  The number of registered enum types.

virtual const char* asIScriptEngine::GetEnumValueByIndex | ( | int | enumTypeId,
|  | asUINT | index,
|  | int * | outValue
| ) |  | const
| pure virtual

Parameters

  [in] | enumTypeId | The type id of the enum type.
  [in] | index | The index of the enum value.
  [out] | outValue | Receives the value of the enum value.

Returns
  The name of the enum value.

virtual int asIScriptEngine::GetEnumValueCount | ( | int | enumTypeId | ) | const
| pure virtual

Parameters

  [in] | enumTypeId | The type id of the enum type.

Returns
  The number of enum values for the enum type.

virtual asIScriptFunction* asIScriptEngine::GetFuncdefByIndex | ( | asUINT | index | ) | const
| pure virtual

Parameters

  [in] | index | The index of the funcdef.

Returns
  The funcdef.

This function does not increase the reference count of the return function definition.

virtual asUINT asIScriptEngine::GetFuncdefCount | ( |  | ) | const
| pure virtual

Returns
  The number of registered funcdefs.

virtual asIScriptFunction* asIScriptEngine::GetFuncDefFromTypeId | ( | int | typeId | ) | const
| pure virtual

Parameters

  [in] | typeId | The type id for the funcdef.

Returns
  A pointer to the function description interface, or null if not found.

This does not increment the reference count of the returned function interface.

virtual asIScriptFunction* asIScriptEngine::GetFunctionById | ( | int | funcId | ) | const
| pure virtual

Parameters

  [in] | funcId | The id of the function or method.

Returns
  A pointer to the function description interface, or null if not found.

This does not increment the reference count of the returned function interface.

virtual void asIScriptEngine::GetGCStatistics | ( | asUINT * | currentSize,
|  | asUINT * | totalDestroyed = `0`,
|  | asUINT * | totalDetected = `0`,
|  | asUINT * | newObjects = `0`,
|  | asUINT * | totalNewDestroyed = `0`
| ) |  | const
| pure virtual

Parameters

  [out] | currentSize | The current number of objects known to the garbage collector.
  [out] | totalDestroyed | The total number of objects destroyed by the garbage collector.
  [out] | totalDetected | The total number of objects detected as garbage with circular references.
  [out] | newObjects | The current number of objects in the new generation.
  [out] | totalNewDestroyed | The total number of objects destroyed while still in the new generation.

This method can be used to query the number of objects that the garbage collector is keeping track of. If the number is very large then it is probably time to call the GarbageCollect method so that some of the objects ca be freed.

See Also
  Garbage collection

virtual asIScriptFunction* asIScriptEngine::GetGlobalFunctionByDecl | ( | const char * | declaration | ) | const
| pure virtual

Parameters

  [in] | declaration | The signature of the function.

Returns
  The function object, or null on error.

virtual asIScriptFunction* asIScriptEngine::GetGlobalFunctionByIndex | ( | asUINT | index | ) | const
| pure virtual

Parameters

  [in] | index | The index of the registered global function.

Returns
  The function object, or null on error.

virtual asUINT asIScriptEngine::GetGlobalFunctionCount | ( |  | ) | const
| pure virtual

Returns
  The number of registered functions.

virtual int asIScriptEngine::GetGlobalPropertyByIndex | ( | asUINT | index,
|  | const char ** | name,
|  | const char ** | nameSpace = `0`,
|  | int * | typeId = `0`,
|  | bool * | isConst = `0`,
|  | const char ** | configGroup = `0`,
|  | void ** | pointer = `0`,
|  | asDWORD * | accessMask = `0`
| ) |  | const
| pure virtual

Parameters

  [in] | index | The index of the global variable.
  [out] | name | Receives the name of the property.
  [out] | nameSpace | Receives the namespace of the property.
  [out] | typeId | Receives the typeId of the property.
  [out] | isConst | Receives the constness indicator of the property.
  [out] | configGroup | Receives the config group in which the property was registered.
  [out] | pointer | Receives the pointer of the property.
  [out] | accessMask | Receives the access mask of the property.

Returns
  A negative value on error.

Return values

  asINVALID_ARG | index is too large.

virtual asUINT asIScriptEngine::GetGlobalPropertyCount | ( |  | ) | const
| pure virtual

Returns
  The number of registered global properties.

virtual int asIScriptEngine::GetGlobalPropertyIndexByDecl | ( | const char * | decl | ) | const
| pure virtual

Parameters

  [in] | decl | The declaration of the property to search for.

Returns
  The index of the matching property or negative on error.

Return values

  asNO_GLOBAL_VAR | No matching property was found.
  asINVALID_DECLARATION | The given declaration is invalid.

virtual int asIScriptEngine::GetGlobalPropertyIndexByName | ( | const char * | name | ) | const
| pure virtual

Parameters

  [in] | name | The name of the property.

Returns
  The index of the matching property or negative on error.

Return values

  asNO_GLOBAL_VAR | No matching property was found.

virtual asIJITCompiler* asIScriptEngine::GetJITCompiler | ( |  | ) | const
| pure virtual

Returns
  Returns a pointer to the JIT compiler

virtual asIScriptModule* asIScriptEngine::GetModule | ( | const char * | module,
|  | asEGMFlags | flag = `asGM_ONLY_IF_EXISTS`
| ) |  |
| pure virtual

Parameters

  [in] | module | The name of the module
  [in] | flag | One of the asEGMFlags flags

Returns
  A pointer to the module interface

Use this method to get access to the module interface, which will let you build new scripts, and enumerate functions and types in existing modules.

If asGM_ALWAYS_CREATE is informed as the flag the previous module with the same name will be discarded, thus any pointers that the engine holds to it will be invalid after the call.

virtual asIScriptModule* asIScriptEngine::GetModuleByIndex | ( | asUINT | index | ) | const
| pure virtual

Parameters

  [in] | index | The index of the module.

Returns
  A pointer to the module or null on error.

virtual asUINT asIScriptEngine::GetModuleCount | ( |  | ) | const
| pure virtual

Returns
  The number of modules.

virtual int asIScriptEngine::GetObjectInGC | ( | asUINT | idx,
|  | asUINT * | seqNbr = `0`,
|  | void ** | obj = `0`,
|  | asIObjectType ** | type = `0`
| ) |  |
| pure virtual

Parameters

  [in] | idx | The index of the desired object
  [out] | seqNbr | The sequence number of the obtained object
  [out] | obj | The object pointer
  [out] | type | The type of the obtained object

Returns
  A negative value on error

Return values

  asINVALID_ARG | The index is not valid

virtual asIObjectType* asIScriptEngine::GetObjectTypeByDecl | ( | const char * | decl | ) | const
| pure virtual

Parameters

  [in] | decl | The declaration of the type.

Returns
  The object type or null on error.

Translates a type declaration into the object type. The returned object type is valid for as long as the type is valid, so you can safely store it for later use to avoid potential overhead from calling this function each time. Just remember to update the object type, any time the type is changed within the engine, e.g. when recompiling script declared classes, or changing the engine configuration.

virtual asIObjectType* asIScriptEngine::GetObjectTypeById | ( | int | typeId | ) | const
| pure virtual

Parameters

  [in] | typeId | The type id of the type.

Returns
  The object type interface for the type, or null if not found.

This does not increment the reference count of the returned object type.

virtual asIObjectType* asIScriptEngine::GetObjectTypeByIndex | ( | asUINT | index | ) | const
| pure virtual

Parameters

  [in] | index | The index of the type.

Returns
  The registered object type interface for the type, or null if not found.

virtual asIObjectType* asIScriptEngine::GetObjectTypeByName | ( | const char * | name | ) | const
| pure virtual

Parameters

  [in] | name | The name of the type.

Returns
  The object type or null if no match is found.

virtual asUINT asIScriptEngine::GetObjectTypeCount | ( |  | ) | const
| pure virtual

Returns
  The number of object types registered by the application.

virtual int asIScriptEngine::GetSizeOfPrimitiveType | ( | int | typeId | ) | const
| pure virtual

Parameters

  [in] | typeId | The type id of the type.

Returns
  The size of the type in bytes, or zero if it is not a primitive type.

This method can be used to return the size of any built-in primitive type, and also for script declared or application registered enums.

virtual int asIScriptEngine::GetStringFactoryReturnTypeId | ( | asDWORD * | flags = `0` | ) | const
| pure virtual

Returns
  The type id of the type that the string type returns, or a negative value on error.

Parameters

  [out] | flags | The type modifiers for the return type

Return values

  asNO_FUNCTION | The string factory has not been registered.

virtual const char* asIScriptEngine::GetTypeDeclaration | ( | int | typeId,
|  | bool | includeNamespace = `false`
| ) |  | const
| pure virtual

Parameters

  [in] | typeId | The type id of the type.
  [in] | includeNamespace | Set to true if the namespace should be included in the formatted declaration.

Returns
  A null terminated string with the type declaration, or null if not found.

virtual const char* asIScriptEngine::GetTypedefByIndex | ( | asUINT | index,
|  | int * | typeId,
|  | const char ** | nameSpace = `0`,
|  | const char ** | configGroup = `0`,
|  | asDWORD * | accessMask = `0`
| ) |  | const
| pure virtual

Parameters

  [in] | index | The index of the typedef.
  [out] | typeId | The type that the typedef aliases.
  [out] | nameSpace | The namespace in which the typedef was registered.
  [out] | configGroup | Receives the config group in which the type def was registered.
  [out] | accessMask | The access mask for the typedef.

Returns
  The name of the typedef.

virtual asUINT asIScriptEngine::GetTypedefCount | ( |  | ) | const
| pure virtual

Returns
  The number of registered typedefs.

virtual int asIScriptEngine::GetTypeIdByDecl | ( | const char * | decl | ) | const
| pure virtual

Parameters

  [in] | decl | The declaration of the type.

Returns
  A negative value on error, or the type id of the type.

Return values

  asINVALID_TYPE | decl is not a valid type.

Translates a type declaration into a type id. The returned type id is valid for as long as the type is valid, so you can safely store it for later use to avoid potential overhead by calling this function each time. Just remember to update the type id, any time the type is changed within the engine, e.g. when recompiling script declared classes, or changing the engine configuration.

The type id is based on a sequence number and depends on the order in which the type ids are queried, thus is not guaranteed to always be the same for each execution of the application. The asETypeIdFlags can be used to obtain some information about the type directly from the id.

A base type yields the same type id whether the declaration is const or not, however if the const is for the subtype then the type id is different, e.g. string@ isn't the same as const string@ but string is the same as const string.

This method is only able to return the type id that are not specific for a script module, i.e. built-in types and application registered types. Type ids for script declared types should be obtained through the script module's GetTypeIdByDecl.

virtual void* asIScriptEngine::GetUserData | ( | asPWORD | type = `0` | ) | const
| pure virtual

Parameters

  [in] | type | An identifier specifying the user data to get.

Returns
  The pointer to the user data.

virtual asILockableSharedBool* asIScriptEngine::GetWeakRefFlagOfScriptObject | ( | void * | obj,
|  | const asIObjectType * | type
| ) |  | const
| pure virtual

Parameters

  [in] | obj | The object
  [in] | type | The object type

Returns
  The weak ref flag, if the object supports weak references.

As long as the weak ref flag is not set, the owning object is still alive. Once the weak ref flag is set, the object is dead and should no longer be accessed. Check if the flag is set with the asILockableSharedBool::Get method.

This method doesn't increase the reference to the returned shared boolean.

virtual bool asIScriptEngine::IsHandleCompatibleWithObject | ( | void * | obj,
|  | int | objTypeId,
|  | int | handleTypeId
| ) |  | const
| pure virtual

Parameters

  [in] | obj | A pointer to the object.
  [in] | objTypeId | The type id of the object.
  [in] | handleTypeId | The type id of the handle.

Returns
  Returns true if the handle type is compatible with the object type.

This method can be used to determine if a handle of a certain type is compatible with an object of another type. This is useful if you have a pointer to a object, but only knows that it implements a certain interface and now you want to determine if it implements another interface.

virtual int asIScriptEngine::NotifyGarbageCollectorOfNewObject | ( | void * | obj,
|  | asIObjectType * | type
| ) |  |
| pure virtual

Parameters

  [in] | obj | A pointer to the newly created object.
  [in] | type | The type of the object.

Returns
  The sequence number of the added object, or a negative value on error.

Return values

  asINVALID_ARG | Either the object or the type is null

This method should be called when a new garbage collected object is created. The GC will then store a reference to the object so that it can automatically detect whether the object is involved in any circular references that should be released.

See Also
  Garbage collected objects

virtual asETokenClass asIScriptEngine::ParseToken | ( | const char * | string,
|  | size_t | stringLength = `0`,
|  | int * | tokenLength = `0`
| ) |  | const
| pure virtual

Parameters

  [in] | string | The string to parse.
  [in] | stringLength | The length of the string. Can be 0 if the string is null terminated.
  [out] | tokenLength | Gives the length of the identified token.

Returns
  One of the asETokenClass values.

This function is useful for those applications that want to tokenize strings into tokens that the script language uses, e.g. IDEs providing syntax highlighting, or intellisense. It can also be used to parse the meta data strings that may be declared for script entities.

virtual int asIScriptEngine::RegisterDefaultArrayType | ( | const char * | type | ) |
| pure virtual

Parameters

  [in] | type | The name of the template type, e.g. array<T>

Returns
  A negative value on error.

Return values

  asINVALID_TYPE | The type is not a template type

virtual int asIScriptEngine::RegisterEnum | ( | const char * | type | ) |
| pure virtual

Parameters

  [in] | type | The name of the enum type.

Returns
  A negative value on error.

Return values

  asINVALID_NAME | type is null.
  asALREADY_REGISTERED | Another type with this name already exists.
  asERROR | The type couldn't be parsed.
  asINVALID_NAME | The type is not an identifier, or it is a reserved keyword.
  asNAME_TAKEN | The type name is already taken.

This method registers an enum type in the engine. The enum values should then be registered with RegisterEnumValue.

virtual int asIScriptEngine::RegisterEnumValue | ( | const char * | type,
|  | const char * | name,
|  | int | value
| ) |  |
| pure virtual

Parameters

  [in] | type | The name of the enum type.
  [in] | name | The name of the enum value.
  [in] | value | The integer value of the enum value.

Returns
  A negative value on error.

Return values

  asWRONG_CONFIG_GROUP | The enum type was registered in a different configuration group.
  asINVALID_TYPE | The type is invalid.
  asALREADY_REGISTERED | The name is already registered for this enum.

This method registers an enum value for a previously registered enum type.

virtual int asIScriptEngine::RegisterFuncdef | ( | const char * | decl | ) |
| pure virtual

Parameters

  [in] | decl | The declaration of the function definition.

Returns
  A negative value on error.

Return values

  asINVALID_ARG | The decl parameter is not given.
  asINVALID_DECLARATION | decl is not a valid function definition.
  asNAME_TAKEN | The name of the funcdef conflicts with another name.

Funcdefs are used to define the signature of function pointers. If the application is going to receive function pointers from scripts, it is necessary to first register the funcdef before registering the function or property that will be used to receive it.

virtual int asIScriptEngine::RegisterGlobalFunction | ( | const char * | declaration,
|  | const asSFuncPtr & | funcPointer,
|  | asDWORD | callConv,
|  | void * | objForThiscall = `0`
| ) |  |
| pure virtual

Parameters

  [in] | declaration | The declaration of the global function in script syntax.
  [in] | funcPointer | The function pointer.
  [in] | callConv | The calling convention for the function.
  [in] | objForThiscall | An object pointer for use with asCALL_THISCALL_ASGLOBAL.

Returns
  A negative value on error, or the function id if successful.

Return values

  asNOT_SUPPORTED | The calling convention is not supported.
  asWRONG_CALLING_CONV | The function's calling convention doesn't match callConv.
  asINVALID_DECLARATION | The function declaration is invalid.
  asNAME_TAKEN | The function name is already used elsewhere.
  asALREADY_REGISTERED | The function has already been registered with the same parameter list.
  asINVALID_ARG | The objForThiscall pointer wasn't set according to calling convention.

This method registers system functions that the scripts may use to communicate with the host application.

See Also
  Registering a function

virtual int asIScriptEngine::RegisterGlobalProperty | ( | const char * | declaration,
|  | void * | pointer
| ) |  |
| pure virtual

Parameters

  [in] | declaration | The declaration of the global property in script syntax.
  [in] | pointer | The address of the property that will be used to access the property value.

Returns
  A negative value on error.

Return values

  asINVALID_DECLARATION | The declaration has invalid syntax.
  asINVALID_TYPE | The declaration is a reference.
  asINVALID_ARG | The pointer is null.
  asNAME_TAKEN | The name is already taken.

Use this method to register a global property that the scripts will be able to access as global variables. The property may optionally be registered as const, if the scripts shouldn't be allowed to modify it.

When registering the property, the application must pass the address to the actual value. The application must also make sure that this address remains valid throughout the life time of this registration, i.e. until the engine is released or the dynamic configuration group is removed.

virtual int asIScriptEngine::RegisterInterface | ( | const char * | name | ) |
| pure virtual

Parameters

  [in] | name | The name of the interface.

Returns
  A negative value on error.

Return values

  asINVALID_NAME | The name is null, or a reserved keyword.
  asALREADY_REGISTERED | An object type with this name already exists.
  asERROR | The name is not a proper identifier.
  asNAME_TAKEN | The name is already used elsewhere.

This registers an interface that script classes can implement. By doing this the application can register functions and methods that receives an asIScriptObject and still be sure that the class implements certain methods needed by the application.

See Also
  Receiving script classes

virtual int asIScriptEngine::RegisterInterfaceMethod | ( | const char * | intf,
|  | const char * | declaration
| ) |  |
| pure virtual

Parameters

  [in] | intf | The name of the interface.
  [in] | declaration | The method declaration.

Returns
  A negative value on error.

Return values

  asWRONG_CONFIG_GROUP | The interface was registered in another configuration group.
  asINVALID_TYPE | intf is not an interface type.
  asINVALID_DECLARATION | The declaration is invalid.
  asNAME_TAKEN | The method name is already taken.

This registers a method that the class that implements the script interface must have.

virtual int asIScriptEngine::RegisterObjectBehaviour | ( | const char * | obj,
|  | asEBehaviours | behaviour,
|  | const char * | declaration,
|  | const asSFuncPtr & | funcPointer,
|  | asDWORD | callConv,
|  | void * | objForThiscall = `0`
| ) |  |
| pure virtual

Parameters

  [in] | obj | The name of the type.
  [in] | behaviour | One of the object behaviours from asEBehaviours.
  [in] | declaration | The declaration of the method in script syntax.
  [in] | funcPointer | The method or function pointer.
  [in] | callConv | The calling convention for the method or function.
  [in] | objForThiscall | The object pointer used for asCALL_THISCALL_ASGLOBAL, asCALL_THISCALL_OBJFIRST, and asCALL_THISCALL_OBJLAST

Returns
  A negative value on error, or the function id is successful.

Return values

  asWRONG_CONFIG_GROUP | The object type was registered in a different configuration group.
  asINVALID_ARG | obj is not set, or a global behaviour is given in behaviour.
  asWRONG_CALLING_CONV | The function's calling convention isn't compatible with callConv.
  asNOT_SUPPORTED | The calling convention or the behaviour signature is not supported.
  asINVALID_TYPE | The obj parameter is not a valid object name.
  asINVALID_DECLARATION | The declaration is invalid.
  asILLEGAL_BEHAVIOUR_FOR_TYPE | The behaviour is not allowed for this type.
  asALREADY_REGISTERED | The behaviour is already registered with the same signature.
  asINVALID_ARG | The objForThiscall pointer wasn't set according to calling convention.

Use this method to register behaviour functions that will be called by the virtual machine to perform certain operations, such as memory management, math operations, comparisons, etc.

The declaration must form a valid function signature, but the give function name will not be used or stored in the application so there is no need to provide a meaningful function name.

See Also
  Registering a function, Registering operator behaviours

virtual int asIScriptEngine::RegisterObjectMethod | ( | const char * | obj,
|  | const char * | declaration,
|  | const asSFuncPtr & | funcPointer,
|  | asDWORD | callConv,
|  | void * | objForThiscall = `0`
| ) |  |
| pure virtual

Parameters

  [in] | obj | The name of the type.
  [in] | declaration | The declaration of the method in script syntax.
  [in] | funcPointer | The method or function pointer.
  [in] | callConv | The calling convention for the method or function.
  [in] | objForThiscall | A pointer to the functor object for use with asCALL_THISCALL_OBJFIRST and asCALL_THISCALL_OBJLAST

Returns
  A negative value on error, or the function id if successful.

Return values

  asWRONG_CONFIG_GROUP | The object type was registered in a different configuration group.
  asNOT_SUPPORTED | The calling convention is not supported.
  asINVALID_TYPE | The obj parameter is not a valid object name.
  asINVALID_DECLARATION | The declaration is invalid.
  asNAME_TAKEN | The name conflicts with other members.
  asWRONG_CALLING_CONV | The function's calling convention isn't compatible with callConv.
  asALREADY_REGISTERED | The method has already been registered with the same parameter list.
  asINVALID_ARG | The objForThiscall pointer wasn't set according to calling convention.

Use this method to register a member method for the type. The method that is registered may be an actual class method, or a global function that takes the object pointer as either the first or last parameter. Or it may be a global function implemented with the generic calling convention.

See Also
  Registering a function

virtual int asIScriptEngine::RegisterObjectProperty | ( | const char * | obj,
|  | const char * | declaration,
|  | int | byteOffset
| ) |  |
| pure virtual

Parameters

  [in] | obj | The name of the type.
  [in] | declaration | The property declaration in script syntax.
  [in] | byteOffset | The offset into the memory block where this property is found.

Returns
  A negative value on error.

Return values

  asWRONG_CONFIG_GROUP | The object type was registered in a different configuration group.
  asINVALID_OBJECT | The obj does not specify an object type.
  asINVALID_TYPE | The obj parameter has invalid syntax.
  asINVALID_DECLARATION | The declaration is invalid.
  asNAME_TAKEN | The name conflicts with other members.

Use this method to register a member property of a class. The property must be local to the object, i.e. not a global variable or a static member. The easiest way to get the offset of the property is to use the asOFFSET macro.

struct MyType {float prop;};
r = engine->RegisterObjectProperty("MyType", "float prop", asOFFSET(MyType, prop)));

virtual int asIScriptEngine::RegisterObjectType | ( | const char * | obj,
|  | int | byteSize,
|  | asDWORD | flags
| ) |  |
| pure virtual

Parameters

  [in] | obj | The name of the type.
  [in] | byteSize | The size of the type in bytes. Only necessary for value types.
  [in] | flags | One or more of the asEObjTypeFlags.

Returns
  The type id on success or a negative value on error.

Return values

  asINVALID_ARG | The flags are invalid.
  asINVALID_NAME | The name is invalid.
  asALREADY_REGISTERED | Another type of the same name already exists.
  asNAME_TAKEN | The name conflicts with other symbol names.
  asLOWER_ARRAY_DIMENSION_NOT_REGISTERED | When registering an array type the array element must be a primitive or a registered type.
  asINVALID_TYPE | The array type was not properly formed.
  asNOT_SUPPORTED | The array type is not supported, or already in use preventing it from being overloaded.

Use this method to register new types that should be available to the scripts. Reference types, which have their memory managed by the application, should be registered with asOBJ_REF. Value types, which have their memory managed by the engine, should be registered with asOBJ_VALUE.

See Also
  Registering an object type

virtual int asIScriptEngine::RegisterStringFactory | ( | const char * | datatype,
|  | const asSFuncPtr & | factoryFunc,
|  | asDWORD | callConv,
|  | void * | objForThiscall = `0`
| ) |  |
| pure virtual

Parameters

  [in] | datatype | The datatype that the string factory returns
  [in] | factoryFunc | The pointer to the factory function
  [in] | callConv | The calling convention of the factory function
  [in] | objForThiscall | The object pointer used for asCALL_THISCALL_ASGLOBAL.

Returns
  A negative value on error, or the function id if successful.

Return values

  asNOT_SUPPORTED | The calling convention is not supported.
  asWRONG_CALLING_CONV | The function's calling convention doesn't match callConv.
  asINVALID_TYPE | The datatype is not a valid type.

Use this function to register a string factory that will be called when the virtual machine finds a string constant in an expression. The string factory function will receive two parameters, the length of the string constant in bytes and a pointer to the character data. The factory should return a value to a previously registered type that will represent the string. Example:

// Our string factory implementation
std::string StringFactory(unsigned int byteLength, const char *s)
{
return std::string(s, byteLength);
}
// Registering the string factory
int r = engine->RegisterStringFactory("string", asFUNCTION(StringFactory), asCALL_CDECL); assert( r >= 0 );

The example assumes that the std::string type has been registered as the string type, with RegisterObjectType.

virtual int asIScriptEngine::RegisterTypedef | ( | const char * | type,
|  | const char * | decl
| ) |  |
| pure virtual

Parameters

  [in] | type | The name of the new typedef
  [in] | decl | The datatype that the typedef represents

Returns
  A negative value on error.

Return values

  asINVALID_NAME | The type is null.
  asALREADY_REGISTERED | A type with the same name already exists.
  asINVALID_TYPE | The decl is not a primitive type.
  asINVALID_NAME | The type is not an identifier, or it is a reserved keyword.
  asNAME_TAKEN | The name is already used elsewhere.

This method registers an alias for a data type.

Currently typedefs can only be registered for built-in primitive types.

virtual int asIScriptEngine::Release | ( |  | ) | const
| pure virtual

Returns
  The number of references to this object.

Call this method when you will no longer use the references that you own.

The application is responsible for releasing references to all other script objects before releasing its last reference to the engine. If this is not done, it is possible that memory leaks occur as the engine cannot free objects kept alive by the application.

virtual void asIScriptEngine::ReleaseScriptObject | ( | void * | obj,
|  | const asIObjectType * | type
| ) |  |
| pure virtual

Parameters

  [in] | obj | A pointer to the object.
  [in] | type | The type of the object.

This calls the release method of the object to release the reference.

If the type is a value type, the method will destroy the object and deallocate the memory using the default memory routine.

virtual int asIScriptEngine::RemoveConfigGroup | ( | const char * | groupName | ) |
| pure virtual

Parameters

  [in] | groupName | The name of the configuration group

Returns
  A negative value on error

Return values

  asCONFIG_GROUP_IS_IN_USE | The group is in use and cannot be removed.

Remove the configuration group. If something in the configuration group is currently in use, the function will return with an error code. Examples of uses are compiled modules that have function calls to functions in the group and global variables of types registered in the group.

See Also
  Dynamic configurations

virtual asIScriptContext* asIScriptEngine::RequestContext | ( |  | ) |
| pure virtual

Returns
  An unprepared context

This method will invoke the registered request context callback and return an available context in an unprepared state.

Contexts obtained through this method shouldn't be released, instead they should be returned to the origin with a call to ReturnContext.

See Also
  CreateContext

virtual void asIScriptEngine::ReturnContext | ( | asIScriptContext * | ctx | ) |
| pure virtual

Parameters

  [in] | ctx | The context that should be returned to the origin

virtual int asIScriptEngine::SetContextCallbacks | ( | asREQUESTCONTEXTFUNC_t | requestCtx,
|  | asRETURNCONTEXTFUNC_t | returnCtx,
|  | void * | param = `0`
| ) |  |
| pure virtual

Parameters

  [in] | requestCtx | The request context callback function
  [in] | returnCtx | The return context callback function
  [in] | param | An optional parameter that will be passed to the callback

Returns
  A negative value on error

Return values

  asINVALID_ARG | Only one of the context functions is informed

This method can be used by the application to implement a context pool, or to perform custom configuration on the contexts that the engine uses internally.

This can for example be used to debug calls to initialize global variables when building modules, or to detect script exceptions that may occur in script class destructors when called from the garbage collector.

virtual void asIScriptEngine::SetContextUserDataCleanupCallback | ( | asCLEANCONTEXTFUNC_t | callback,
|  | asPWORD | type = `0`
| ) |  |
| pure virtual

Parameters

  [in] | callback | A pointer to the function
  [in] | type | An identifier specifying which user data the callback is to be used with.

The function given with this call will be invoked when a context is destroyed if any user data has been registered with the context.

The function is called from within the context destructor, so the callback should not be used for anything but cleaning up the user data itself.

virtual asDWORD asIScriptEngine::SetDefaultAccessMask | ( | asDWORD | defaultMask | ) |
| pure virtual

Parameters

  [in] | defaultMask | The default access bit mask.

Returns
  The previous default mask.

See Also
  Access masks and exposing different interfaces

virtual int asIScriptEngine::SetDefaultNamespace | ( | const char * | nameSpace | ) |
| pure virtual

Parameters

  [in] | nameSpace | The namespace that should be used.

Returns
  A negative value on error

Return values

  asINVALID_ARG | The namespace is invalid

Call this method to set the default namespace for which the following calls should assume. This applies to registration of the application interface and also to the functions that searches for registered entities.

Nested namespaces can be informed by separating them with the scope token, i.e. ::

virtual int asIScriptEngine::SetEngineProperty | ( | asEEngineProp | property,
|  | asPWORD | value
| ) |  |
| pure virtual

Parameters

  [in] | property | One of the asEEngineProp values.
  [in] | value | The new value of the property.

Returns
  Negative value on error.

Return values

  asINVALID_ARG | Invalid property.

With this method you can change the way the script engine works in some regards.

virtual void asIScriptEngine::SetEngineUserDataCleanupCallback | ( | asCLEANENGINEFUNC_t | callback,
|  | asPWORD | type = `0`
| ) |  |
| pure virtual

Parameters

  [in] | callback | A pointer to the function
  [in] | type | An identifier specifying which user data the callback is to be used with.

The function given with this call will be invoked when the engine is destroyed if any user data has been registered with the engine.

The function is called from within the engine destructor, so the callback should not be used for anything but cleaning up the user data itself.

virtual void asIScriptEngine::SetFunctionUserDataCleanupCallback | ( | asCLEANFUNCTIONFUNC_t | callback,
|  | asPWORD | type = `0`
| ) |  |
| pure virtual

Parameters

  [in] | callback | A pointer to the function
  [in] | type | An identifier specifying which user data the callback is to be used with.

The function given with this call will be invoked when a function is destroyed if any user data has been registered with the function.

The function is called from within the function destructor, so the callback should not be used for anything but cleaning up the user data itself.

virtual int asIScriptEngine::SetJITCompiler | ( | asIJITCompiler * | compiler | ) |
| pure virtual

Parameters

  [in] | compiler | A pointer to the JIT compiler

Returns
  A negative value on error.

This method is used to set the JIT compiler. The engine will automatically invoke the JIT compiler when it is set after compiling scripts or loading pre-compiled byte code.

See Also
  How to build a JIT compiler

virtual int asIScriptEngine::SetMessageCallback | ( | const asSFuncPtr & | callback,
|  | void * | obj,
|  | asDWORD | callConv
| ) |  |
| pure virtual

Parameters

  [in] | callback | A function or class method pointer.
  [in] | obj | The object for methods, or an optional parameter for functions.
  [in] | callConv | The calling convention.

Returns
  A negative value for an error.

Return values

  asINVALID_ARG | One of the arguments is incorrect, e.g. obj is null for a class method.
  asNOT_SUPPORTED | The arguments are not supported, e.g. asCALL_GENERIC.

This method sets the callback routine that will receive compiler messages. The callback routine can be either a class method, e.g:

void MyClass::MessageCallback(const asSMessageInfo *msg);
r = engine->SetMessageCallback(asMETHOD(MyClass,MessageCallback), &obj, asCALL_THISCALL);

or a global function, e.g:

void MessageCallback(const asSMessageInfo *msg, void *param);
r = engine->SetMessageCallback(asFUNCTION(MessageCallback), param, asCALL_CDECL);

It is recommended to register the message callback routine right after creating the engine, as some of the registration functions can provide useful information to better explain errors.

virtual void asIScriptEngine::SetModuleUserDataCleanupCallback | ( | asCLEANMODULEFUNC_t | callback,
|  | asPWORD | type = `0`
| ) |  |
| pure virtual

Parameters

  [in] | callback | A pointer to the function
  [in] | type | An identifier specifying which user data the callback is to be used with.

The function given with this call will be invoked when the module is destroyed if any user data has been registered with the module.

The function is called from within the module destructor, so the callback should not be used for anything but cleaning up the user data itself.

virtual void asIScriptEngine::SetObjectTypeUserDataCleanupCallback | ( | asCLEANOBJECTTYPEFUNC_t | callback,
|  | asPWORD | type = `0`
| ) |  |
| pure virtual

Parameters

  [in] | callback | A pointer to the function
  [in] | type | An identifier specifying which user data the callback is to be used with.

The function given with this call will be invoked when an object type is destroyed if any user data has been registered with the type.

The function is called from within the object type destructor, so the callback should not be used for anything but cleaning up the user data itself.

virtual void* asIScriptEngine::SetUserData | ( | void * | data,
|  | asPWORD | type = `0`
| ) |  |
| pure virtual

Parameters

  [in] | data | A pointer to the user data.
  [in] | type | An identifier specifying the user data to set.

Returns
  The previous pointer stored in the engine.

This method allows the application to associate a value, e.g. a pointer, with the engine instance.

The type values 1000 through 1999 are reserved for use by the official add-ons.

Optionally, a callback function can be registered to clean up the user data when the engine is destroyed.

virtual int asIScriptEngine::WriteMessage | ( | const char * | section,
|  | int | row,
|  | int | col,
|  | asEMsgType | type,
|  | const char * | message
| ) |  |
| pure virtual

Parameters

  [in] | section | The name of the script section.
  [in] | row | The row number.
  [in] | col | The column number.
  [in] | type | The message type.
  [in] | message | The message text.

Returns
  A negative value on error.

Return values

  asINVALID_ARG | The section or message is null.

This method can be used by the application to write messages to the same message callback that the script compiler uses. This is useful for example if a preprocessor is used.

The documentation for this class was generated from the following file:

- angelscript.h