stk-code_catmod/lib/angelscript/source/as_builder.cpp

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/*
AngelCode Scripting Library
Copyright (c) 2003-2017 Andreas Jonsson
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any
damages arising from the use of this software.
Permission is granted to anyone to use this software for any
purpose, including commercial applications, and to alter it and
redistribute it freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you
must not claim that you wrote the original software. If you use
this software in a product, an acknowledgment in the product
documentation would be appreciated but is not required.
2. Altered source versions must be plainly marked as such, and
must not be misrepresented as being the original software.
3. This notice may not be removed or altered from any source
distribution.
The original version of this library can be located at:
http://www.angelcode.com/angelscript/
Andreas Jonsson
andreas@angelcode.com
*/
//
// as_builder.cpp
//
// This is the class that manages the compilation of the scripts
//
#include "as_config.h"
#include "as_builder.h"
#include "as_parser.h"
#include "as_compiler.h"
#include "as_tokendef.h"
#include "as_string_util.h"
#include "as_outputbuffer.h"
#include "as_texts.h"
#include "as_scriptobject.h"
#include "as_debug.h"
BEGIN_AS_NAMESPACE
#ifndef AS_NO_COMPILER
// asCSymbolTable template specializations for sGlobalVariableDescription entries
template<>
void asCSymbolTable<sGlobalVariableDescription>::GetKey(const sGlobalVariableDescription *entry, asSNameSpaceNamePair &key) const
{
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asSNameSpace *ns = entry->ns;
asCString name = entry->name;
key = asSNameSpaceNamePair(ns, name);
}
// Comparator for exact variable search
class asCCompGlobVarType : public asIFilter
{
public:
const asCDataType &m_type;
asCCompGlobVarType(const asCDataType &type) : m_type(type) {}
bool operator()(const void *p) const
{
const sGlobalVariableDescription* desc = reinterpret_cast<const sGlobalVariableDescription*>(p);
return desc->datatype == m_type;
}
private:
// The assignment operator is required for MSVC9, otherwise it will complain that it is not possible to auto generate the operator
asCCompGlobVarType &operator=(const asCCompGlobVarType &) {return *this;}
};
#endif
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asCBuilder::asCBuilder(asCScriptEngine *_engine, asCModule *_module)
{
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this->engine = _engine;
this->module = _module;
silent = false;
}
asCBuilder::~asCBuilder()
{
#ifndef AS_NO_COMPILER
asUINT n;
// Free all functions
for( n = 0; n < functions.GetLength(); n++ )
{
if( functions[n] )
{
if( functions[n]->node )
functions[n]->node->Destroy(engine);
asDELETE(functions[n],sFunctionDescription);
}
functions[n] = 0;
}
// Free all global variables
asCSymbolTable<sGlobalVariableDescription>::iterator it = globVariables.List();
while( it )
{
if( (*it)->declaredAtNode )
(*it)->declaredAtNode->Destroy(engine);
if( (*it)->initializationNode )
(*it)->initializationNode->Destroy(engine);
asDELETE((*it),sGlobalVariableDescription);
it++;
}
globVariables.Clear();
// Free all the loaded files
for( n = 0; n < scripts.GetLength(); n++ )
{
if( scripts[n] )
asDELETE(scripts[n],asCScriptCode);
scripts[n] = 0;
}
// Free all class declarations
for( n = 0; n < classDeclarations.GetLength(); n++ )
{
if( classDeclarations[n] )
{
if( classDeclarations[n]->node )
classDeclarations[n]->node->Destroy(engine);
asDELETE(classDeclarations[n],sClassDeclaration);
classDeclarations[n] = 0;
}
}
for( n = 0; n < interfaceDeclarations.GetLength(); n++ )
{
if( interfaceDeclarations[n] )
{
if( interfaceDeclarations[n]->node )
interfaceDeclarations[n]->node->Destroy(engine);
asDELETE(interfaceDeclarations[n],sClassDeclaration);
interfaceDeclarations[n] = 0;
}
}
for( n = 0; n < namedTypeDeclarations.GetLength(); n++ )
{
if( namedTypeDeclarations[n] )
{
if( namedTypeDeclarations[n]->node )
namedTypeDeclarations[n]->node->Destroy(engine);
asDELETE(namedTypeDeclarations[n],sClassDeclaration);
namedTypeDeclarations[n] = 0;
}
}
for( n = 0; n < funcDefs.GetLength(); n++ )
{
if( funcDefs[n] )
{
if( funcDefs[n]->node )
funcDefs[n]->node->Destroy(engine);
asDELETE(funcDefs[n],sFuncDef);
funcDefs[n] = 0;
}
}
for( n = 0; n < mixinClasses.GetLength(); n++ )
{
if( mixinClasses[n] )
{
if( mixinClasses[n]->node )
mixinClasses[n]->node->Destroy(engine);
asDELETE(mixinClasses[n],sMixinClass);
mixinClasses[n] = 0;
}
}
#endif // AS_NO_COMPILER
}
void asCBuilder::Reset()
{
numErrors = 0;
numWarnings = 0;
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engine->preMessage.isSet = false;
#ifndef AS_NO_COMPILER
// Clear the cache of known types
hasCachedKnownTypes = false;
knownTypes.EraseAll();
#endif
}
#ifndef AS_NO_COMPILER
int asCBuilder::AddCode(const char *name, const char *code, int codeLength, int lineOffset, int sectionIdx, bool makeCopy)
{
asCScriptCode *script = asNEW(asCScriptCode);
if( script == 0 )
return asOUT_OF_MEMORY;
int r = script->SetCode(name, code, codeLength, makeCopy);
if( r < 0 )
{
asDELETE(script, asCScriptCode);
return r;
}
script->lineOffset = lineOffset;
script->idx = sectionIdx;
scripts.PushLast(script);
return 0;
}
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void asCBuilder::EvaluateTemplateInstances(asUINT startIdx, bool keepSilent)
{
// Backup the original message stream
bool msgCallback = engine->msgCallback;
asSSystemFunctionInterface msgCallbackFunc = engine->msgCallbackFunc;
void *msgCallbackObj = engine->msgCallbackObj;
// Set the new temporary message stream
asCOutputBuffer outBuffer;
if( keepSilent )
engine->SetMessageCallback(asMETHOD(asCOutputBuffer, Callback), &outBuffer, asCALL_THISCALL);
// Evaluate each of the template instances that have been created since the start of the build
// TODO: This is not exactly correct, since another thread may have created template instances in parallel
for( asUINT n = startIdx; n < engine->templateInstanceTypes.GetLength(); n++ )
{
bool dontGarbageCollect = false;
asCObjectType *tmpl = engine->templateInstanceTypes[n];
asCScriptFunction *callback = engine->scriptFunctions[tmpl->beh.templateCallback];
if( callback && !engine->CallGlobalFunctionRetBool(tmpl, &dontGarbageCollect, callback->sysFuncIntf, callback) )
{
asCString sub = tmpl->templateSubTypes[0].Format(engine->nameSpaces[0]);
for( asUINT m = 1; m < tmpl->templateSubTypes.GetLength(); m++ )
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{
sub += ",";
sub += tmpl->templateSubTypes[m].Format(engine->nameSpaces[0]);
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}
asCString str;
str.Format(TXT_INSTANCING_INVLD_TMPL_TYPE_s_s, tmpl->name.AddressOf(), sub.AddressOf());
WriteError(tmpl->scriptSectionIdx >= 0 ? engine->scriptSectionNames[tmpl->scriptSectionIdx]->AddressOf() : "", str, tmpl->declaredAt&0xFFFFF, (tmpl->declaredAt>>20)&0xFFF);
}
else
{
// If the callback said this template instance won't be garbage collected then remove the flag
if( dontGarbageCollect )
tmpl->flags &= ~asOBJ_GC;
}
}
// Restore message callback
if( keepSilent )
{
engine->msgCallback = msgCallback;
engine->msgCallbackFunc = msgCallbackFunc;
engine->msgCallbackObj = msgCallbackObj;
}
}
int asCBuilder::Build()
{
Reset();
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// The template callbacks must only be called after the subtypes have a known structure,
// otherwise the callback may think it is not possible to create the template instance,
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// even though it is.
// TODO: This flag shouldn't be set globally in the engine, as it would mean that another
// thread requesting a template instance in parallel to the compilation wouldn't
// evaluate the template instance.
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engine->deferValidationOfTemplateTypes = true;
asUINT numTempl = (asUINT)engine->templateInstanceTypes.GetLength();
ParseScripts();
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// Compile the types first
CompileInterfaces();
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CompileClasses(numTempl);
// Evaluate the template instances one last time, this time with error messages, as we know
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// all classes have been fully built and it is known which ones will need garbage collection.
EvaluateTemplateInstances(numTempl, false);
engine->deferValidationOfTemplateTypes = false;
// Then the global variables. Here the variables declared with auto
// will be resolved, so they can be accessed properly in the functions
CompileGlobalVariables();
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// Finally the global functions and class methods
CompileFunctions();
// TODO: Attempt to reorder the initialization of global variables so that
// they do not access other uninitialized global variables out-of-order
// The builder needs to check for each of the global variable, what functions
// that are accessed, and what global variables are access by these functions.
if( numWarnings > 0 && engine->ep.compilerWarnings == 2 )
WriteError(TXT_WARNINGS_TREATED_AS_ERROR, 0, 0);
if( numErrors > 0 )
return asERROR;
// Make sure something was compiled, otherwise return an error
if( module->IsEmpty() )
{
WriteError(TXT_NOTHING_WAS_BUILT, 0, 0);
return asERROR;
}
return asSUCCESS;
}
int asCBuilder::CompileGlobalVar(const char *sectionName, const char *code, int lineOffset)
{
Reset();
// Add the string to the script code
asCScriptCode *script = asNEW(asCScriptCode);
if( script == 0 )
return asOUT_OF_MEMORY;
script->SetCode(sectionName, code, true);
script->lineOffset = lineOffset;
script->idx = engine->GetScriptSectionNameIndex(sectionName ? sectionName : "");
scripts.PushLast(script);
// Parse the string
asCParser parser(this);
if( parser.ParseScript(scripts[0]) < 0 )
return asERROR;
asCScriptNode *node = parser.GetScriptNode();
// Make sure there is nothing else than the global variable in the script code
if( node == 0 ||
node->firstChild == 0 ||
node->firstChild != node->lastChild ||
node->firstChild->nodeType != snDeclaration )
{
WriteError(TXT_ONLY_ONE_VARIABLE_ALLOWED, script, 0);
return asERROR;
}
node = node->firstChild;
node->DisconnectParent();
RegisterGlobalVar(node, script, module->defaultNamespace);
CompileGlobalVariables();
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// It is possible that the global variable initialization included anonymous functions that must be compiled too
for( asUINT n = 0; n < functions.GetLength(); n++ )
{
asCCompiler compiler(engine);
asCScriptFunction *func = engine->scriptFunctions[functions[n]->funcId];
int r = compiler.CompileFunction(this, functions[n]->script, func->parameterNames, functions[n]->node, func, 0);
if( r < 0 )
break;
}
if( numWarnings > 0 && engine->ep.compilerWarnings == 2 )
WriteError(TXT_WARNINGS_TREATED_AS_ERROR, 0, 0);
// None of the functions should be added to the module if any error occurred,
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// or it was requested that the functions wouldn't be added to the scope
if( numErrors > 0 )
{
for( asUINT n = 0; n < functions.GetLength(); n++ )
{
asCScriptFunction *func = engine->scriptFunctions[functions[n]->funcId];
if( module->globalFunctions.GetIndex(func) >= 0 )
{
module->globalFunctions.Erase(module->globalFunctions.GetIndex(func));
module->scriptFunctions.RemoveValue(func);
func->ReleaseInternal();
}
}
}
if( numErrors > 0 )
{
// Remove the variable from the module, if it was registered
if( globVariables.GetSize() > 0 )
module->RemoveGlobalVar(module->GetGlobalVarCount()-1);
return asERROR;
}
return 0;
}
#endif
int asCBuilder::ValidateDefaultArgs(asCScriptCode *script, asCScriptNode *node, asCScriptFunction *func)
{
int firstArgWithDefaultValue = -1;
for( asUINT n = 0; n < func->defaultArgs.GetLength(); n++ )
{
if( func->defaultArgs[n] )
firstArgWithDefaultValue = n;
else if( firstArgWithDefaultValue >= 0 )
{
asCString str;
str.Format(TXT_DEF_ARG_MISSING_IN_FUNC_s, func->GetDeclaration());
WriteError(str, script, node);
return asINVALID_DECLARATION;
}
}
return 0;
}
#ifndef AS_NO_COMPILER
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// This function will verify if the newly created function will conflict another overload due to having
// identical function arguments that are not default args, e.g: foo(int) and foo(int, int=0)
int asCBuilder::CheckForConflictsDueToDefaultArgs(asCScriptCode *script, asCScriptNode *node, asCScriptFunction *func, asCObjectType *objType)
{
// TODO: Implement for global functions too
if( func->objectType == 0 || objType == 0 ) return 0;
asCArray<int> funcs;
GetObjectMethodDescriptions(func->name.AddressOf(), objType, funcs, false);
for( asUINT n = 0; n < funcs.GetLength(); n++ )
{
asCScriptFunction *func2 = engine->scriptFunctions[funcs[n]];
if( func == func2 )
continue;
if( func->IsReadOnly() != func2->IsReadOnly() )
continue;
bool match = true;
asUINT p = 0;
for( ; p < func->parameterTypes.GetLength() && p < func2->parameterTypes.GetLength(); p++ )
{
// Only verify until the first argument with default args
if( (func->defaultArgs.GetLength() > p && func->defaultArgs[p]) ||
(func2->defaultArgs.GetLength() > p && func2->defaultArgs[p]) )
break;
if( func->parameterTypes[p] != func2->parameterTypes[p] ||
func->inOutFlags[p] != func2->inOutFlags[p] )
{
match = false;
break;
}
}
if( match )
{
if( !((p >= func->parameterTypes.GetLength() && p < func2->defaultArgs.GetLength() && func2->defaultArgs[p]) ||
(p >= func2->parameterTypes.GetLength() && p < func->defaultArgs.GetLength() && func->defaultArgs[p])) )
{
// The argument lists match for the full length of the shorter, but the next
// argument on the longer does not have a default arg so there is no conflict
match = false;
}
}
if( match )
{
WriteWarning(TXT_OVERLOAD_CONFLICTS_DUE_TO_DEFAULT_ARGS, script, node);
WriteInfo(func->GetDeclaration(), script, node);
WriteInfo(func2->GetDeclaration(), script, node);
break;
}
}
return 0;
}
int asCBuilder::CompileFunction(const char *sectionName, const char *code, int lineOffset, asDWORD compileFlags, asCScriptFunction **outFunc)
{
asASSERT(outFunc != 0);
Reset();
// Add the string to the script code
asCScriptCode *script = asNEW(asCScriptCode);
if( script == 0 )
return asOUT_OF_MEMORY;
script->SetCode(sectionName, code, true);
script->lineOffset = lineOffset;
script->idx = engine->GetScriptSectionNameIndex(sectionName ? sectionName : "");
scripts.PushLast(script);
// Parse the string
asCParser parser(this);
if( parser.ParseScript(scripts[0]) < 0 )
return asERROR;
asCScriptNode *node = parser.GetScriptNode();
// Make sure there is nothing else than the function in the script code
if( node == 0 ||
node->firstChild == 0 ||
node->firstChild != node->lastChild ||
node->firstChild->nodeType != snFunction )
{
WriteError(TXT_ONLY_ONE_FUNCTION_ALLOWED, script, 0);
return asERROR;
}
// Find the function node
node = node->firstChild;
// Create the function
asSFunctionTraits funcTraits;
asCScriptFunction *func = asNEW(asCScriptFunction)(engine, compileFlags & asCOMP_ADD_TO_MODULE ? module : 0, asFUNC_SCRIPT);
if( func == 0 )
return asOUT_OF_MEMORY;
GetParsedFunctionDetails(node, scripts[0], 0, func->name, func->returnType, func->parameterNames, func->parameterTypes, func->inOutFlags, func->defaultArgs, funcTraits, module->defaultNamespace);
func->id = engine->GetNextScriptFunctionId();
func->scriptData->scriptSectionIdx = engine->GetScriptSectionNameIndex(sectionName ? sectionName : "");
int row, col;
scripts[0]->ConvertPosToRowCol(node->tokenPos, &row, &col);
func->scriptData->declaredAt = (row & 0xFFFFF)|((col & 0xFFF)<<20);
func->nameSpace = module->defaultNamespace;
// Make sure the default args are declared correctly
int r = ValidateDefaultArgs(script, node, func);
if( r < 0 )
{
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func->ReleaseInternal();
return asERROR;
}
// Tell the engine that the function exists already so the compiler can access it
if( compileFlags & asCOMP_ADD_TO_MODULE )
{
r = CheckNameConflict(func->name.AddressOf(), node, scripts[0], module->defaultNamespace);
if( r < 0 )
{
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func->ReleaseInternal();
return asERROR;
}
module->globalFunctions.Put(func);
module->AddScriptFunction(func);
}
else
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engine->AddScriptFunction(func);
// Fill in the function info for the builder too
node->DisconnectParent();
sFunctionDescription *funcDesc = asNEW(sFunctionDescription);
if( funcDesc == 0 )
{
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func->ReleaseInternal();
return asOUT_OF_MEMORY;
}
functions.PushLast(funcDesc);
funcDesc->script = scripts[0];
funcDesc->node = node;
funcDesc->name = func->name;
funcDesc->funcId = func->id;
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funcDesc->paramNames = func->parameterNames;
funcDesc->isExistingShared = false;
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// This must be done in a loop, as it is possible that additional functions get declared as lambda's in the code
for( asUINT n = 0; n < functions.GetLength(); n++ )
{
asCCompiler compiler(engine);
asCScriptFunction *f = engine->scriptFunctions[functions[n]->funcId];
r = compiler.CompileFunction(this, functions[n]->script, f->parameterNames, functions[n]->node, f, 0);
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if( r < 0 )
break;
}
if( numWarnings > 0 && engine->ep.compilerWarnings == 2 )
WriteError(TXT_WARNINGS_TREATED_AS_ERROR, 0, 0);
// None of the functions should be added to the module if any error occurred,
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// or it was requested that the functions wouldn't be added to the scope
if( !(compileFlags & asCOMP_ADD_TO_MODULE) || numErrors > 0 )
{
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for( asUINT n = 0; n < functions.GetLength(); n++ )
{
asCScriptFunction *f = engine->scriptFunctions[functions[n]->funcId];
if( module->globalFunctions.GetIndex(f) >= 0 )
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{
module->globalFunctions.Erase(module->globalFunctions.GetIndex(f));
module->scriptFunctions.RemoveValue(f);
f->ReleaseInternal();
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}
}
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}
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if( numErrors > 0 )
{
// Release the function pointer that would otherwise be returned if no errors occured
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func->ReleaseInternal();
return asERROR;
}
// Return the function
*outFunc = func;
return asSUCCESS;
}
void asCBuilder::ParseScripts()
{
TimeIt("asCBuilder::ParseScripts");
asCArray<asCParser*> parsers((int)scripts.GetLength());
// Parse all the files as if they were one
asUINT n = 0;
for( n = 0; n < scripts.GetLength(); n++ )
{
asCParser *parser = asNEW(asCParser)(this);
if( parser != 0 )
{
parsers.PushLast(parser);
// Parse the script file
parser->ParseScript(scripts[n]);
}
}
if (numErrors == 0)
{
// Find all type declarations
for (n = 0; n < scripts.GetLength(); n++)
{
asCScriptNode *node = parsers[n]->GetScriptNode();
RegisterTypesFromScript(node, scripts[n], engine->nameSpaces[0]);
}
// Before moving forward the builder must establish the relationship between types
// so that a derived type can see the child types of the parent type.
DetermineTypeRelations();
// Complete function definitions (defining returntype and parameters)
for( n = 0; n < funcDefs.GetLength(); n++ )
CompleteFuncDef(funcDefs[n]);
// Register script methods found in the interfaces
for( n = 0; n < interfaceDeclarations.GetLength(); n++ )
{
sClassDeclaration *decl = interfaceDeclarations[n];
asCScriptNode *node = decl->node->firstChild->next;
// Skip list of inherited interfaces
while( node && node->nodeType == snIdentifier )
node = node->next;
while( node )
{
asCScriptNode *next = node->next;
if( node->nodeType == snFunction )
{
node->DisconnectParent();
RegisterScriptFunctionFromNode(node, decl->script, CastToObjectType(decl->typeInfo), true, false, 0, decl->isExistingShared);
}
else if( node->nodeType == snVirtualProperty )
{
node->DisconnectParent();
RegisterVirtualProperty(node, decl->script, CastToObjectType(decl->typeInfo), true, false, 0, decl->isExistingShared);
}
node = next;
}
}
// Register script methods found in the classes
for( n = 0; n < classDeclarations.GetLength(); n++ )
{
sClassDeclaration *decl = classDeclarations[n];
asCScriptNode *node = decl->node->firstChild->next;
// Skip list of classes and interfaces
while( node && node->nodeType == snIdentifier )
node = node->next;
while( node )
{
asCScriptNode *next = node->next;
if( node->nodeType == snFunction )
{
node->DisconnectParent();
RegisterScriptFunctionFromNode(node, decl->script, CastToObjectType(decl->typeInfo), false, false, 0, decl->isExistingShared);
}
else if( node->nodeType == snVirtualProperty )
{
node->DisconnectParent();
RegisterVirtualProperty(node, decl->script, CastToObjectType(decl->typeInfo), false, false, 0, decl->isExistingShared);
}
node = next;
}
// Make sure the default factory & constructor exists for classes
asCObjectType *ot = CastToObjectType(decl->typeInfo);
if( ot->beh.construct == engine->scriptTypeBehaviours.beh.construct )
{
if( ot->beh.constructors.GetLength() == 1 || engine->ep.alwaysImplDefaultConstruct )
{
AddDefaultConstructor(ot, decl->script);
}
else
{
// As the class has another constructor we shouldn't provide the default constructor
if( ot->beh.construct )
{
engine->scriptFunctions[ot->beh.construct]->ReleaseInternal();
ot->beh.construct = 0;
ot->beh.constructors.RemoveIndex(0);
}
if( ot->beh.factory )
{
engine->scriptFunctions[ot->beh.factory]->ReleaseInternal();
ot->beh.factory = 0;
ot->beh.factories.RemoveIndex(0);
}
// Only remove the opAssign method if the script hasn't provided one
if( ot->beh.copy == engine->scriptTypeBehaviours.beh.copy )
{
engine->scriptFunctions[ot->beh.copy]->ReleaseInternal();
ot->beh.copy = 0;
}
}
}
}
// Find other global nodes
for( n = 0; n < scripts.GetLength(); n++ )
{
// Find other global nodes
asCScriptNode *node = parsers[n]->GetScriptNode();
RegisterNonTypesFromScript(node, scripts[n], engine->nameSpaces[0]);
}
}
for( n = 0; n < parsers.GetLength(); n++ )
{
asDELETE(parsers[n],asCParser);
}
}
void asCBuilder::RegisterTypesFromScript(asCScriptNode *node, asCScriptCode *script, asSNameSpace *ns)
{
asASSERT(node->nodeType == snScript);
// Find structure definitions first
node = node->firstChild;
while( node )
{
asCScriptNode *next = node->next;
if( node->nodeType == snNamespace )
{
// Recursively register the entities defined in the namespace
asCString nsName;
nsName.Assign(&script->code[node->firstChild->tokenPos], node->firstChild->tokenLength);
if( ns->name != "" )
nsName = ns->name + "::" + nsName;
asSNameSpace *nsChild = engine->AddNameSpace(nsName.AddressOf());
RegisterTypesFromScript(node->lastChild, script, nsChild);
}
else
{
if( node->nodeType == snClass )
{
node->DisconnectParent();
RegisterClass(node, script, ns);
}
else if( node->nodeType == snInterface )
{
node->DisconnectParent();
RegisterInterface(node, script, ns);
}
else if( node->nodeType == snEnum )
{
node->DisconnectParent();
RegisterEnum(node, script, ns);
}
else if( node->nodeType == snTypedef )
{
node->DisconnectParent();
RegisterTypedef(node, script, ns);
}
else if( node->nodeType == snFuncDef )
{
node->DisconnectParent();
RegisterFuncDef(node, script, ns, 0);
}
else if( node->nodeType == snMixin )
{
node->DisconnectParent();
RegisterMixinClass(node, script, ns);
}
}
node = next;
}
}
void asCBuilder::RegisterNonTypesFromScript(asCScriptNode *node, asCScriptCode *script, asSNameSpace *ns)
{
node = node->firstChild;
while( node )
{
asCScriptNode *next = node->next;
if( node->nodeType == snNamespace )
{
// Determine the name of the namespace
asCString nsName;
nsName.Assign(&script->code[node->firstChild->tokenPos], node->firstChild->tokenLength);
if( ns->name != "" )
nsName = ns->name + "::" + nsName;
// Declare the namespace, then add the entities
asSNameSpace *nsChild = engine->AddNameSpace(nsName.AddressOf());
RegisterNonTypesFromScript(node->lastChild, script, nsChild);
}
else
{
node->DisconnectParent();
if( node->nodeType == snFunction )
RegisterScriptFunctionFromNode(node, script, 0, false, true, ns);
else if( node->nodeType == snDeclaration )
RegisterGlobalVar(node, script, ns);
else if( node->nodeType == snVirtualProperty )
RegisterVirtualProperty(node, script, 0, false, true, ns);
else if( node->nodeType == snImport )
RegisterImportedFunction(module->GetNextImportedFunctionId(), node, script, ns);
else
{
// Unused script node
int r, c;
script->ConvertPosToRowCol(node->tokenPos, &r, &c);
WriteWarning(script->name, TXT_UNUSED_SCRIPT_NODE, r, c);
node->Destroy(engine);
}
}
node = next;
}
}
void asCBuilder::CompileFunctions()
{
// Compile each function
for( asUINT n = 0; n < functions.GetLength(); n++ )
{
sFunctionDescription *current = functions[n];
if( current == 0 ) continue;
// Don't compile the function again if it was an existing shared function
if( current->isExistingShared ) continue;
// Don't compile if there is no statement block
if (current->node && !(current->node->nodeType == snStatementBlock || current->node->lastChild->nodeType == snStatementBlock))
continue;
asCCompiler compiler(engine);
asCScriptFunction *func = engine->scriptFunctions[current->funcId];
// Find the class declaration for constructors
sClassDeclaration *classDecl = 0;
if( current->objType && current->name == current->objType->name )
{
for( asUINT c = 0; c < classDeclarations.GetLength(); c++ )
{
if( classDeclarations[c]->typeInfo == current->objType )
{
classDecl = classDeclarations[c];
break;
}
}
asASSERT( classDecl );
}
if( current->node )
{
int r, c;
current->script->ConvertPosToRowCol(current->node->tokenPos, &r, &c);
asCString str = func->GetDeclarationStr();
str.Format(TXT_COMPILING_s, str.AddressOf());
WriteInfo(current->script->name, str, r, c, true);
// When compiling a constructor need to pass the class declaration for member initializations
compiler.CompileFunction(this, current->script, current->paramNames, current->node, func, classDecl);
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engine->preMessage.isSet = false;
}
else if( current->objType && current->name == current->objType->name )
{
asCScriptNode *node = classDecl->node;
int r = 0, c = 0;
if( node )
current->script->ConvertPosToRowCol(node->tokenPos, &r, &c);
asCString str = func->GetDeclarationStr();
str.Format(TXT_COMPILING_s, str.AddressOf());
WriteInfo(current->script->name, str, r, c, true);
// This is the default constructor that is generated
// automatically if not implemented by the user.
compiler.CompileDefaultConstructor(this, current->script, node, func, classDecl);
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engine->preMessage.isSet = false;
}
else
{
asASSERT( false );
}
}
}
#endif
// Called from module and engine
int asCBuilder::ParseDataType(const char *datatype, asCDataType *result, asSNameSpace *implicitNamespace, bool isReturnType)
{
Reset();
asCScriptCode source;
source.SetCode("", datatype, true);
asCParser parser(this);
int r = parser.ParseDataType(&source, isReturnType);
if( r < 0 )
return asINVALID_TYPE;
// Get data type and property name
asCScriptNode *dataType = parser.GetScriptNode()->firstChild;
*result = CreateDataTypeFromNode(dataType, &source, implicitNamespace, true);
if( isReturnType )
*result = ModifyDataTypeFromNode(*result, dataType->next, &source, 0, 0);
if( numErrors > 0 )
return asINVALID_TYPE;
return asSUCCESS;
}
int asCBuilder::ParseTemplateDecl(const char *decl, asCString *name, asCArray<asCString> &subtypeNames)
{
Reset();
asCScriptCode source;
source.SetCode("", decl, true);
asCParser parser(this);
int r = parser.ParseTemplateDecl(&source);
if( r < 0 )
return asINVALID_TYPE;
// Get the template name and subtype names
asCScriptNode *node = parser.GetScriptNode()->firstChild;
name->Assign(&decl[node->tokenPos], node->tokenLength);
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while( (node = node->next) != 0 )
{
asCString subtypeName;
subtypeName.Assign(&decl[node->tokenPos], node->tokenLength);
subtypeNames.PushLast(subtypeName);
}
// TODO: template: check for name conflicts
if( numErrors > 0 )
return asINVALID_DECLARATION;
return asSUCCESS;
}
int asCBuilder::VerifyProperty(asCDataType *dt, const char *decl, asCString &name, asCDataType &type, asSNameSpace *ns)
{
// Either datatype or namespace must be informed
asASSERT( dt || ns );
Reset();
if( dt )
{
// Verify that the object type exist
if( CastToObjectType(dt->GetTypeInfo()) == 0 )
return asINVALID_OBJECT;
}
// Check property declaration and type
asCScriptCode source;
source.SetCode(TXT_PROPERTY, decl, true);
asCParser parser(this);
int r = parser.ParsePropertyDeclaration(&source);
if( r < 0 )
return asINVALID_DECLARATION;
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// Get data type
asCScriptNode *dataType = parser.GetScriptNode()->firstChild;
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// Check if the property is declared 'by reference'
bool isReference = (dataType->next->tokenType == ttAmp);
// Get the name of the property
asCScriptNode *nameNode = isReference ? dataType->next->next : dataType->next;
// If an object property is registered, then use the
// object's namespace, otherwise use the specified namespace
type = CreateDataTypeFromNode(dataType, &source, dt ? dt->GetTypeInfo()->nameSpace : ns);
name.Assign(&decl[nameNode->tokenPos], nameNode->tokenLength);
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type.MakeReference(isReference);
// Validate that the type really can be a registered property
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// We cannot use CanBeInstantiated, as it is allowed to register
// properties of type that cannot otherwise be instantiated
if( type.IsFuncdef() && !type.IsObjectHandle() )
{
// Function definitions must always be handles
return asINVALID_DECLARATION;
}
// Verify property name
if( dt )
{
if( CheckNameConflictMember(dt->GetTypeInfo(), name.AddressOf(), nameNode, &source, true) < 0 )
return asNAME_TAKEN;
}
else
{
if( CheckNameConflict(name.AddressOf(), nameNode, &source, ns) < 0 )
return asNAME_TAKEN;
}
if( numErrors > 0 )
return asINVALID_DECLARATION;
return asSUCCESS;
}
#ifndef AS_NO_COMPILER
asCObjectProperty *asCBuilder::GetObjectProperty(asCDataType &obj, const char *prop)
{
asASSERT(CastToObjectType(obj.GetTypeInfo()) != 0);
// TODO: optimize: Improve linear search
asCArray<asCObjectProperty *> &props = CastToObjectType(obj.GetTypeInfo())->properties;
for( asUINT n = 0; n < props.GetLength(); n++ )
{
if( props[n]->name == prop )
{
if( module->accessMask & props[n]->accessMask )
return props[n];
else
return 0;
}
}
return 0;
}
#endif
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bool asCBuilder::DoesGlobalPropertyExist(const char *prop, asSNameSpace *ns, asCGlobalProperty **outProp, sGlobalVariableDescription **outDesc, bool *isAppProp)
{
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if( outProp ) *outProp = 0;
if( outDesc ) *outDesc = 0;
if( isAppProp ) *isAppProp = false;
// Check application registered properties
asCString name(prop);
asCGlobalProperty *globProp = engine->registeredGlobalProps.GetFirst(ns, name);
if( globProp )
{
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if( isAppProp ) *isAppProp = true;
if( outProp ) *outProp = globProp;
return true;
}
#ifndef AS_NO_COMPILER
// Check properties being compiled now
sGlobalVariableDescription* desc = globVariables.GetFirst(ns, prop);
if( desc && !desc->isEnumValue )
{
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if( outProp ) *outProp = desc->property;
if( outDesc ) *outDesc = desc;
return true;
}
#endif
// Check previously compiled global variables
if( module )
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{
globProp = module->scriptGlobals.GetFirst(ns, prop);
if( globProp )
{
if( outProp ) *outProp = globProp;
return true;
}
}
return false;
}
asCGlobalProperty *asCBuilder::GetGlobalProperty(const char *prop, asSNameSpace *ns, bool *isCompiled, bool *isPureConstant, asQWORD *constantValue, bool *isAppProp)
{
if( isCompiled ) *isCompiled = true;
if( isPureConstant ) *isPureConstant = false;
if( isAppProp ) *isAppProp = false;
if( constantValue ) *constantValue = 0;
asCGlobalProperty *globProp = 0;
sGlobalVariableDescription *globDesc = 0;
if( DoesGlobalPropertyExist(prop, ns, &globProp, &globDesc, isAppProp) )
{
#ifndef AS_NO_COMPILER
if( globDesc )
{
// The property was declared in this build call, check if it has been compiled successfully already
if( isCompiled ) *isCompiled = globDesc->isCompiled;
if( isPureConstant ) *isPureConstant = globDesc->isPureConstant;
if( constantValue ) *constantValue = globDesc->constantValue;
}
else
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#endif
if( isAppProp )
{
// Don't return the property if the module doesn't have access to it
if( !(module->accessMask & globProp->accessMask) )
globProp = 0;
}
return globProp;
}
return 0;
}
int asCBuilder::ParseFunctionDeclaration(asCObjectType *objType, const char *decl, asCScriptFunction *func, bool isSystemFunction, asCArray<bool> *paramAutoHandles, bool *returnAutoHandle, asSNameSpace *ns, asCScriptNode **listPattern, asCObjectType **outParentClass)
{
asASSERT( objType || ns );
if (listPattern)
*listPattern = 0;
if (outParentClass)
*outParentClass = 0;
// TODO: Can't we use GetParsedFunctionDetails to do most of what is done in this function?
Reset();
asCScriptCode source;
source.SetCode(TXT_SYSTEM_FUNCTION, decl, true);
asCParser parser(this);
int r = parser.ParseFunctionDefinition(&source, listPattern != 0);
if( r < 0 )
return asINVALID_DECLARATION;
asCScriptNode *node = parser.GetScriptNode();
// Determine scope
asCScriptNode *n = node->firstChild->next->next;
asCObjectType *parentClass = 0;
func->nameSpace = GetNameSpaceFromNode(n, &source, ns, &n, &parentClass);
if( func->nameSpace == 0 && parentClass == 0 )
return asINVALID_DECLARATION;
if (parentClass && func->funcType != asFUNC_FUNCDEF)
return asINVALID_DECLARATION;
if (outParentClass)
*outParentClass = parentClass;
// Find name
func->name.Assign(&source.code[n->tokenPos], n->tokenLength);
// Initialize a script function object for registration
bool autoHandle;
// Scoped reference types are allowed to use handle when returned from application functions
func->returnType = CreateDataTypeFromNode(node->firstChild, &source, objType ? objType->nameSpace : ns, true, parentClass ? parentClass : objType);
func->returnType = ModifyDataTypeFromNode(func->returnType, node->firstChild->next, &source, 0, &autoHandle);
if( autoHandle && (!func->returnType.IsObjectHandle() || func->returnType.IsReference()) )
return asINVALID_DECLARATION;
if( returnAutoHandle ) *returnAutoHandle = autoHandle;
// Reference types cannot be returned by value from system functions
if( isSystemFunction &&
(func->returnType.GetTypeInfo() &&
(func->returnType.GetTypeInfo()->flags & asOBJ_REF)) &&
!(func->returnType.IsReference() ||
func->returnType.IsObjectHandle()) )
return asINVALID_DECLARATION;
// Count number of parameters
int paramCount = 0;
asCScriptNode *paramList = n->next;
n = paramList->firstChild;
while( n )
{
paramCount++;
n = n->next->next;
if( n && n->nodeType == snIdentifier )
n = n->next;
if( n && n->nodeType == snExpression )
n = n->next;
}
// Preallocate memory
func->parameterTypes.Allocate(paramCount, false);
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func->parameterNames.SetLength(paramCount);
func->inOutFlags.Allocate(paramCount, false);
func->defaultArgs.Allocate(paramCount, false);
if( paramAutoHandles ) paramAutoHandles->Allocate(paramCount, false);
n = paramList->firstChild;
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asUINT index = 0;
while( n )
{
asETypeModifiers inOutFlags;
asCDataType type = CreateDataTypeFromNode(n, &source, objType ? objType->nameSpace : ns, false, parentClass ? parentClass : objType);
type = ModifyDataTypeFromNode(type, n->next, &source, &inOutFlags, &autoHandle);
// Reference types cannot be passed by value to system functions
if( isSystemFunction &&
(type.GetTypeInfo() &&
(type.GetTypeInfo()->flags & asOBJ_REF)) &&
!(type.IsReference() ||
type.IsObjectHandle()) )
return asINVALID_DECLARATION;
// Store the parameter type
func->parameterTypes.PushLast(type);
func->inOutFlags.PushLast(inOutFlags);
// Don't permit void parameters
if( type.GetTokenType() == ttVoid )
return asINVALID_DECLARATION;
if( autoHandle && (!type.IsObjectHandle() || type.IsReference()) )
return asINVALID_DECLARATION;
if( paramAutoHandles ) paramAutoHandles->PushLast(autoHandle);
// Make sure that var type parameters are references
if( type.GetTokenType() == ttQuestion &&
!type.IsReference() )
return asINVALID_DECLARATION;
// Move to next parameter
n = n->next->next;
if( n && n->nodeType == snIdentifier )
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{
func->parameterNames[index] = asCString(&source.code[n->tokenPos], n->tokenLength);
n = n->next;
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}
++index;
if( n && n->nodeType == snExpression )
{
// Strip out white space and comments to better share the string
asCString *defaultArgStr = asNEW(asCString);
if( defaultArgStr )
{
*defaultArgStr = GetCleanExpressionString(n, &source);
func->defaultArgs.PushLast(defaultArgStr);
}
n = n->next;
}
else
func->defaultArgs.PushLast(0);
}
// Set the read-only flag if const is declared after parameter list
n = paramList->next;
if( n && n->nodeType == snUndefined && n->tokenType == ttConst )
{
if( objType == 0 )
return asINVALID_DECLARATION;
func->SetReadOnly(true);
n = n->next;
}
else
func->SetReadOnly(false);
// If the caller expects a list pattern, check for the existence, else report an error if not
if( listPattern )
{
if( n == 0 || n->nodeType != snListPattern )
return asINVALID_DECLARATION;
else
{
*listPattern = n;
n->DisconnectParent();
}
}
else
{
if( n )
return asINVALID_DECLARATION;
}
// Make sure the default args are declared correctly
ValidateDefaultArgs(&source, node, func);
if( numErrors > 0 || numWarnings > 0 )
return asINVALID_DECLARATION;
return 0;
}
int asCBuilder::ParseVariableDeclaration(const char *decl, asSNameSpace *implicitNamespace, asCString &outName, asSNameSpace *&outNamespace, asCDataType &outDt)
{
Reset();
asCScriptCode source;
source.SetCode(TXT_VARIABLE_DECL, decl, true);
asCParser parser(this);
int r = parser.ParsePropertyDeclaration(&source);
if( r < 0 )
return asINVALID_DECLARATION;
asCScriptNode *node = parser.GetScriptNode();
// Determine the scope from declaration
asCScriptNode *n = node->firstChild->next;
// TODO: child funcdef: The parentType will be set if the scope is actually a type rather than a namespace
outNamespace = GetNameSpaceFromNode(n, &source, implicitNamespace, &n);
if( outNamespace == 0 )
return asINVALID_DECLARATION;
// Find name
outName.Assign(&source.code[n->tokenPos], n->tokenLength);
// Initialize a script variable object for registration
outDt = CreateDataTypeFromNode(node->firstChild, &source, implicitNamespace);
if( numErrors > 0 || numWarnings > 0 )
return asINVALID_DECLARATION;
return 0;
}
int asCBuilder::CheckNameConflictMember(asCTypeInfo *t, const char *name, asCScriptNode *node, asCScriptCode *code, bool isProperty)
{
// It's not necessary to check against object types
asCObjectType *ot = CastToObjectType(t);
if (!ot)
return 0;
// TODO: optimize: Improve linear search
asCArray<asCObjectProperty *> &props = ot->properties;
for( asUINT n = 0; n < props.GetLength(); n++ )
{
if( props[n]->name == name )
{
if( code )
{
asCString str;
str.Format(TXT_NAME_CONFLICT_s_OBJ_PROPERTY, name);
WriteError(str, code, node);
}
return -1;
}
}
asCArray<asCFuncdefType*> &funcdefs = ot->childFuncDefs;
for (asUINT n = 0; n < funcdefs.GetLength(); n++)
{
if (funcdefs[n]->name == name)
{
if (code)
{
asCString str;
str.Format(TXT_NAME_CONFLICT_s_IS_FUNCDEF, name);
WriteError(str, code, node);
}
return -1;
}
}
// Property names must be checked against method names
if( isProperty )
{
asCArray<int> methods = ot->methods;
for( asUINT n = 0; n < methods.GetLength(); n++ )
{
if( engine->scriptFunctions[methods[n]]->name == name )
{
if( code )
{
asCString str;
str.Format(TXT_NAME_CONFLICT_s_METHOD, name);
WriteError(str, code, node);
}
return -1;
}
}
}
return 0;
}
int asCBuilder::CheckNameConflict(const char *name, asCScriptNode *node, asCScriptCode *code, asSNameSpace *ns)
{
// Check against registered object types
// TODO: Must check against registered funcdefs too
if( engine->GetRegisteredType(name, ns) != 0 )
{
if( code )
{
asCString str;
str.Format(TXT_NAME_CONFLICT_s_EXTENDED_TYPE, name);
WriteError(str, code, node);
}
return -1;
}
// Check against global properties
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if( DoesGlobalPropertyExist(name, ns) )
{
if( code )
{
asCString str;
str.Format(TXT_NAME_CONFLICT_s_GLOBAL_PROPERTY, name);
WriteError(str, code, node);
}
return -1;
}
// TODO: Property names must be checked against function names
#ifndef AS_NO_COMPILER
// Check against class types
asUINT n;
for( n = 0; n < classDeclarations.GetLength(); n++ )
{
if( classDeclarations[n]->name == name &&
classDeclarations[n]->typeInfo->nameSpace == ns )
{
if( code )
{
asCString str;
str.Format(TXT_NAME_CONFLICT_s_STRUCT, name);
WriteError(str, code, node);
}
return -1;
}
}
// Check against named types
for( n = 0; n < namedTypeDeclarations.GetLength(); n++ )
{
if( namedTypeDeclarations[n]->name == name &&
namedTypeDeclarations[n]->typeInfo->nameSpace == ns )
{
if( code )
{
asCString str;
str.Format(TXT_NAME_CONFLICT_s_IS_NAMED_TYPE, name);
WriteError(str, code, node);
}
return -1;
}
}
// Must check for name conflicts with funcdefs
for( n = 0; n < funcDefs.GetLength(); n++ )
{
if( funcDefs[n]->name == name &&
module->funcDefs[funcDefs[n]->idx]->nameSpace == ns )
{
if( code )
{
asCString str;
str.Format(TXT_NAME_CONFLICT_s_IS_FUNCDEF, name);
WriteError(str, code, node);
}
return -1;
}
}
// Check against mixin classes
if( GetMixinClass(name, ns) )
{
if( code )
{
asCString str;
str.Format(TXT_NAME_CONFLICT_s_IS_MIXIN, name);
WriteError(str, code, node);
}
return -1;
}
#endif
return 0;
}
#ifndef AS_NO_COMPILER
sMixinClass *asCBuilder::GetMixinClass(const char *name, asSNameSpace *ns)
{
for( asUINT n = 0; n < mixinClasses.GetLength(); n++ )
if( mixinClasses[n]->name == name &&
mixinClasses[n]->ns == ns )
return mixinClasses[n];
return 0;
}
int asCBuilder::RegisterFuncDef(asCScriptNode *node, asCScriptCode *file, asSNameSpace *ns, asCObjectType *parent)
{
// namespace and parent are exclusively mutual
asASSERT((ns == 0 && parent) || (ns && parent == 0));
// Skip leading 'shared' and 'external' keywords
asCScriptNode *n = node->firstChild;
while (n->nodeType == snIdentifier)
n = n->next;
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// Find the name
asASSERT( n->nodeType == snDataType );
n = n->next->next;
asCString name;
name.Assign(&file->code[n->tokenPos], n->tokenLength);
// Check for name conflict with other types
if (ns)
{
int r = CheckNameConflict(name.AddressOf(), node, file, ns);
if (asSUCCESS != r)
{
node->Destroy(engine);
return r;
}
}
else
{
int r = CheckNameConflictMember(parent, name.AddressOf(), node, file, false);
if (asSUCCESS != r)
{
node->Destroy(engine);
return r;
}
}
// The function definition should be stored as a asCScriptFunction so that the application
// can use the asIScriptFunction interface to enumerate the return type and parameters
// The return type and parameter types aren't determined in this function. A second pass is
// necessary after all type declarations have been identified. The second pass is implemented
// in CompleteFuncDef().
sFuncDef *fd = asNEW(sFuncDef);
if( fd == 0 )
{
node->Destroy(engine);
return asOUT_OF_MEMORY;
}
fd->name = name;
fd->node = node;
fd->script = file;
fd->idx = module->AddFuncDef(name, ns, parent);
funcDefs.PushLast(fd);
return 0;
}
void asCBuilder::CompleteFuncDef(sFuncDef *funcDef)
{
asCArray<asCString *> defaultArgs;
asSFunctionTraits funcTraits;
asCFuncdefType *fdt = module->funcDefs[funcDef->idx];
asASSERT( fdt );
asCScriptFunction *func = fdt->funcdef;
asSNameSpace *implicitNs = func->nameSpace ? func->nameSpace : fdt->parentClass->nameSpace;
GetParsedFunctionDetails(funcDef->node, funcDef->script, fdt->parentClass, funcDef->name, func->returnType, func->parameterNames, func->parameterTypes, func->inOutFlags, defaultArgs, funcTraits, implicitNs);
// There should not be any defaultArgs, but if there are any we need to delete them to avoid leaks
for( asUINT n = 0; n < defaultArgs.GetLength(); n++ )
if( defaultArgs[n] )
asDELETE(defaultArgs[n], asCString);
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// All funcdefs are shared, unless one of the parameter types or return type is not shared
bool declaredShared = funcTraits.GetTrait(asTRAIT_SHARED);
funcTraits.SetTrait(asTRAIT_SHARED, true);
if (func->returnType.GetTypeInfo() && !func->returnType.GetTypeInfo()->IsShared())
{
if (declaredShared)
{
asCString s;
s.Format(TXT_SHARED_CANNOT_USE_NON_SHARED_TYPE_s, func->returnType.GetTypeInfo()->name.AddressOf());
WriteError(s.AddressOf(), funcDef->script, funcDef->node);
}
funcTraits.SetTrait(asTRAIT_SHARED, false);
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}
for( asUINT n = 0; funcTraits.GetTrait(asTRAIT_SHARED) && n < func->parameterTypes.GetLength(); n++ )
if (func->parameterTypes[n].GetTypeInfo() && !func->parameterTypes[n].GetTypeInfo()->IsShared())
{
if (declaredShared)
{
asCString s;
s.Format(TXT_SHARED_CANNOT_USE_NON_SHARED_TYPE_s, func->parameterTypes[n].GetTypeInfo()->name.AddressOf());
WriteError(s.AddressOf(), funcDef->script, funcDef->node);
}
funcTraits.SetTrait(asTRAIT_SHARED, false);
}
func->SetShared(funcTraits.GetTrait(asTRAIT_SHARED));
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// Check if there is another identical funcdef from another module and if so reuse that instead
bool found = false;
if( func->IsShared() )
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{
for( asUINT n = 0; n < engine->funcDefs.GetLength(); n++ )
{
asCFuncdefType *fdt2 = engine->funcDefs[n];
if( fdt2 == 0 || fdt == fdt2 )
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continue;
if( !fdt2->funcdef->IsShared() )
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continue;
if( fdt2->name == fdt->name &&
fdt2->nameSpace == fdt->nameSpace &&
fdt2->funcdef->IsSignatureExceptNameEqual(func) )
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{
// Replace our funcdef for the existing one
funcDef->idx = fdt2->funcdef->id;
module->funcDefs[module->funcDefs.IndexOf(fdt)] = fdt2;
fdt2->AddRefInternal();
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engine->funcDefs.RemoveValue(fdt);
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fdt->ReleaseInternal();
found = true;
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break;
}
}
}
// If the funcdef was declared as external then the existing shared declaration must have been found
if (funcTraits.GetTrait(asTRAIT_EXTERNAL) && !found)
{
asCString str;
str.Format(TXT_EXTERNAL_SHARED_s_NOT_FOUND, funcDef->name.AddressOf());
WriteError(str, funcDef->script, funcDef->node);
}
// Remember if the type was declared as external so the saved bytecode can be flagged accordingly
if (funcTraits.GetTrait(asTRAIT_EXTERNAL) && found)
module->externalTypes.PushLast(engine->scriptFunctions[funcDef->idx]->funcdefType);
}
int asCBuilder::RegisterGlobalVar(asCScriptNode *node, asCScriptCode *file, asSNameSpace *ns)
{
// Has the application disabled global vars?
if( engine->ep.disallowGlobalVars )
WriteError(TXT_GLOBAL_VARS_NOT_ALLOWED, file, node);
// What data type is it?
asCDataType type = CreateDataTypeFromNode(node->firstChild, file, ns);
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if( !type.CanBeInstantiated() )
{
asCString str;
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if( type.IsAbstractClass() )
str.Format(TXT_ABSTRACT_CLASS_s_CANNOT_BE_INSTANTIATED, type.Format(ns).AddressOf());
else if( type.IsInterface() )
str.Format(TXT_INTERFACE_s_CANNOT_BE_INSTANTIATED, type.Format(ns).AddressOf());
else
// TODO: Improve error message to explain why
str.Format(TXT_DATA_TYPE_CANT_BE_s, type.Format(ns).AddressOf());
WriteError(str, file, node);
}
asCScriptNode *n = node->firstChild->next;
while( n )
{
// Verify that the name isn't taken
asCString name(&file->code[n->tokenPos], n->tokenLength);
CheckNameConflict(name.AddressOf(), n, file, ns);
// Register the global variable
sGlobalVariableDescription *gvar = asNEW(sGlobalVariableDescription);
if( gvar == 0 )
{
node->Destroy(engine);
return asOUT_OF_MEMORY;
}
gvar->script = file;
gvar->name = name;
gvar->isCompiled = false;
gvar->datatype = type;
gvar->isEnumValue = false;
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gvar->ns = ns;
// TODO: Give error message if wrong
asASSERT(!gvar->datatype.IsReference());
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// Allocation is done when the variable is compiled, to allow for autos
gvar->property = 0;
gvar->index = 0;
globVariables.Put(gvar);
gvar->declaredAtNode = n;
n = n->next;
gvar->declaredAtNode->DisconnectParent();
gvar->initializationNode = 0;
if( n &&
( n->nodeType == snAssignment ||
n->nodeType == snArgList ||
n->nodeType == snInitList ) )
{
gvar->initializationNode = n;
n = n->next;
gvar->initializationNode->DisconnectParent();
}
}
node->Destroy(engine);
return 0;
}
int asCBuilder::RegisterMixinClass(asCScriptNode *node, asCScriptCode *file, asSNameSpace *ns)
{
asCScriptNode *cl = node->firstChild;
asASSERT( cl->nodeType == snClass );
asCScriptNode *n = cl->firstChild;
// Skip potential 'final' and 'shared' tokens
while( n->tokenType == ttIdentifier &&
(file->TokenEquals(n->tokenPos, n->tokenLength, FINAL_TOKEN) ||
file->TokenEquals(n->tokenPos, n->tokenLength, SHARED_TOKEN)) )
{
// Report error, because mixin class cannot be final or shared
asCString msg;
msg.Format(TXT_MIXIN_CANNOT_BE_DECLARED_AS_s, asCString(&file->code[n->tokenPos], n->tokenLength).AddressOf());
WriteError(msg, file, n);
asCScriptNode *tmp = n;
n = n->next;
// Remove the invalid node, so compilation can continue as if it wasn't there
tmp->DisconnectParent();
tmp->Destroy(engine);
}
asCString name(&file->code[n->tokenPos], n->tokenLength);
int r, c;
file->ConvertPosToRowCol(n->tokenPos, &r, &c);
CheckNameConflict(name.AddressOf(), n, file, ns);
sMixinClass *decl = asNEW(sMixinClass);
if( decl == 0 )
{
node->Destroy(engine);
return asOUT_OF_MEMORY;
}
mixinClasses.PushLast(decl);
decl->name = name;
decl->ns = ns;
decl->node = cl;
decl->script = file;
// Clean up memory
cl->DisconnectParent();
node->Destroy(engine);
// Check that the mixin class doesn't contain any child types
// TODO: Add support for child types in mixin classes
n = cl->firstChild;
while (n)
{
if (n->nodeType == snFuncDef)
{
WriteError(TXT_MIXIN_CANNOT_HAVE_CHILD_TYPES, file, n);
break;
}
n = n->next;
}
return 0;
}
int asCBuilder::RegisterClass(asCScriptNode *node, asCScriptCode *file, asSNameSpace *ns)
{
asCScriptNode *n = node->firstChild;
bool isFinal = false;
bool isShared = false;
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bool isAbstract = false;
bool isExternal = false;
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// Check the class modifiers
while( n->tokenType == ttIdentifier )
{
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if( file->TokenEquals(n->tokenPos, n->tokenLength, FINAL_TOKEN) )
{
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if( isAbstract )
WriteError(TXT_CLASS_CANT_BE_FINAL_AND_ABSTRACT, file, n);
else
{
if( isFinal )
{
asCString msg;
msg.Format(TXT_ATTR_s_INFORMED_MULTIPLE_TIMES, asCString(&file->code[n->tokenPos], n->tokenLength).AddressOf());
WriteWarning(msg, file, n);
}
isFinal = true;
}
}
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else if( file->TokenEquals(n->tokenPos, n->tokenLength, SHARED_TOKEN) )
{
if( isShared )
{
asCString msg;
msg.Format(TXT_ATTR_s_INFORMED_MULTIPLE_TIMES, asCString(&file->code[n->tokenPos], n->tokenLength).AddressOf());
WriteWarning(msg, file, n);
}
isShared = true;
}
else if (file->TokenEquals(n->tokenPos, n->tokenLength, EXTERNAL_TOKEN))
{
if (isExternal)
{
asCString msg;
msg.Format(TXT_ATTR_s_INFORMED_MULTIPLE_TIMES, asCString(&file->code[n->tokenPos], n->tokenLength).AddressOf());
WriteWarning(msg, file, n);
}
isExternal = true;
}
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else if( file->TokenEquals(n->tokenPos, n->tokenLength, ABSTRACT_TOKEN) )
{
if( isFinal )
WriteError(TXT_CLASS_CANT_BE_FINAL_AND_ABSTRACT, file, n);
else
{
if( isAbstract )
{
asCString msg;
msg.Format(TXT_ATTR_s_INFORMED_MULTIPLE_TIMES, asCString(&file->code[n->tokenPos], n->tokenLength).AddressOf());
WriteWarning(msg, file, n);
}
isAbstract = true;
}
}
else
{
// This is the name of the class
break;
}
n = n->next;
}
asCString name(&file->code[n->tokenPos], n->tokenLength);
int r, c;
file->ConvertPosToRowCol(n->tokenPos, &r, &c);
CheckNameConflict(name.AddressOf(), n, file, ns);
sClassDeclaration *decl = asNEW(sClassDeclaration);
if( decl == 0 )
{
node->Destroy(engine);
return asOUT_OF_MEMORY;
}
classDeclarations.PushLast(decl);
decl->name = name;
decl->script = file;
decl->node = node;
// External shared interfaces must not try to redefine the interface
if (isExternal && (n->next == 0 || n->next->tokenType != ttEndStatement))
{
asCString str;
str.Format(TXT_EXTERNAL_SHARED_s_CANNOT_REDEF, name.AddressOf());
WriteError(str, file, n);
}
else if (!isExternal && n->next && n->next->tokenType == ttEndStatement)
{
asCString str;
str.Format(TXT_MISSING_DEFINITION_OF_s, name.AddressOf());
WriteError(str, file, n);
}
// If this type is shared and there already exist another shared
// type of the same name, then that one should be used instead of
// creating a new one.
asCObjectType *st = 0;
if( isShared )
{
for( asUINT i = 0; i < engine->sharedScriptTypes.GetLength(); i++ )
{
st = CastToObjectType(engine->sharedScriptTypes[i]);
if( st &&
st->IsShared() &&
st->name == name &&
st->nameSpace == ns &&
!st->IsInterface() )
{
// We'll use the existing type
decl->isExistingShared = true;
decl->typeInfo = st;
module->classTypes.PushLast(st);
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st->AddRefInternal();
break;
}
}
}
// If the class was declared as external then it must have been compiled in a different module first
if (isExternal && decl->typeInfo == 0)
{
asCString str;
str.Format(TXT_EXTERNAL_SHARED_s_NOT_FOUND, name.AddressOf());
WriteError(str, file, n);
}
// Remember if the class was declared as external so the saved bytecode can be flagged accordingly
if (isExternal)
module->externalTypes.PushLast(st);
if (!decl->isExistingShared)
{
// Create a new object type for this class
st = asNEW(asCObjectType)(engine);
if (st == 0)
return asOUT_OF_MEMORY;
// By default all script classes are marked as garbage collected.
// Only after the complete structure and relationship between classes
// is known, can the flag be cleared for those objects that truly cannot
// form circular references. This is important because a template
// callback may be called with a script class before the compilation
// completes, and until it is known, the callback must assume the class
// is garbage collected.
st->flags = asOBJ_REF | asOBJ_SCRIPT_OBJECT | asOBJ_GC;
if (isShared)
st->flags |= asOBJ_SHARED;
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if (isFinal)
st->flags |= asOBJ_NOINHERIT;
if (isAbstract)
st->flags |= asOBJ_ABSTRACT;
if (node->tokenType == ttHandle)
st->flags |= asOBJ_IMPLICIT_HANDLE;
st->size = sizeof(asCScriptObject);
st->name = name;
st->nameSpace = ns;
st->module = module;
module->classTypes.PushLast(st);
if (isShared)
{
engine->sharedScriptTypes.PushLast(st);
st->AddRefInternal();
}
decl->typeInfo = st;
// Use the default script class behaviours
st->beh = engine->scriptTypeBehaviours.beh;
// TODO: Move this to asCObjectType so that the asCRestore can reuse it
engine->scriptFunctions[st->beh.addref]->AddRefInternal();
engine->scriptFunctions[st->beh.release]->AddRefInternal();
engine->scriptFunctions[st->beh.gcEnumReferences]->AddRefInternal();
engine->scriptFunctions[st->beh.gcGetFlag]->AddRefInternal();
engine->scriptFunctions[st->beh.gcGetRefCount]->AddRefInternal();
engine->scriptFunctions[st->beh.gcReleaseAllReferences]->AddRefInternal();
engine->scriptFunctions[st->beh.gcSetFlag]->AddRefInternal();
engine->scriptFunctions[st->beh.copy]->AddRefInternal();
engine->scriptFunctions[st->beh.factory]->AddRefInternal();
engine->scriptFunctions[st->beh.construct]->AddRefInternal();
// TODO: weak: Should not do this if the class has been declared with noweak
engine->scriptFunctions[st->beh.getWeakRefFlag]->AddRefInternal();
// Skip to the content of the class
while (n && n->nodeType == snIdentifier)
n = n->next;
}
// Register possible child types
while (n)
{
node = n->next;
if (n->nodeType == snFuncDef)
{
n->DisconnectParent();
if (!decl->isExistingShared)
RegisterFuncDef(n, file, 0, st);
else
{
// Destroy the node, since it won't be used
// TODO: Should verify that the funcdef is identical to the one in the existing shared class
n->Destroy(engine);
}
}
n = node;
}
return 0;
}
int asCBuilder::RegisterInterface(asCScriptNode *node, asCScriptCode *file, asSNameSpace *ns)
{
asCScriptNode *n = node->firstChild;
bool isShared = false;
bool isExternal = false;
while( n->nodeType == snIdentifier )
{
if (file->TokenEquals(n->tokenPos, n->tokenLength, SHARED_TOKEN))
isShared = true;
else if (file->TokenEquals(n->tokenPos, n->tokenLength, EXTERNAL_TOKEN))
isExternal = true;
else
break;
n = n->next;
}
int r, c;
file->ConvertPosToRowCol(n->tokenPos, &r, &c);
asCString name;
name.Assign(&file->code[n->tokenPos], n->tokenLength);
CheckNameConflict(name.AddressOf(), n, file, ns);
sClassDeclaration *decl = asNEW(sClassDeclaration);
if( decl == 0 )
{
node->Destroy(engine);
return asOUT_OF_MEMORY;
}
interfaceDeclarations.PushLast(decl);
decl->name = name;
decl->script = file;
decl->node = node;
// External shared interfaces must not try to redefine the interface
if (isExternal && (n->next == 0 || n->next->tokenType != ttEndStatement) )
{
asCString str;
str.Format(TXT_EXTERNAL_SHARED_s_CANNOT_REDEF, name.AddressOf());
WriteError(str, file, n);
}
else if (!isExternal && n->next && n->next->tokenType == ttEndStatement)
{
asCString str;
str.Format(TXT_MISSING_DEFINITION_OF_s, name.AddressOf());
WriteError(str, file, n);
}
// If this type is shared and there already exist another shared
// type of the same name, then that one should be used instead of
// creating a new one.
if( isShared )
{
for( asUINT i = 0; i < engine->sharedScriptTypes.GetLength(); i++ )
{
asCObjectType *st = CastToObjectType(engine->sharedScriptTypes[i]);
if( st &&
st->IsShared() &&
st->name == name &&
st->nameSpace == ns &&
st->IsInterface() )
{
// We'll use the existing type
decl->isExistingShared = true;
decl->typeInfo = st;
module->classTypes.PushLast(st);
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st->AddRefInternal();
// Remember if the interface was declared as external so the saved bytecode can be flagged accordingly
if (isExternal)
module->externalTypes.PushLast(st);
return 0;
}
}
}
// If the interface was declared as external then it must have been compiled in a different module first
if (isExternal)
{
asCString str;
str.Format(TXT_EXTERNAL_SHARED_s_NOT_FOUND, name.AddressOf());
WriteError(str, file, n);
}
// Register the object type for the interface
asCObjectType *st = asNEW(asCObjectType)(engine);
if( st == 0 )
return asOUT_OF_MEMORY;
st->flags = asOBJ_REF | asOBJ_SCRIPT_OBJECT;
if( isShared )
st->flags |= asOBJ_SHARED;
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st->size = 0; // Cannot be instantiated
st->name = name;
st->nameSpace = ns;
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st->module = module;
module->classTypes.PushLast(st);
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if( isShared )
{
engine->sharedScriptTypes.PushLast(st);
st->AddRefInternal();
}
decl->typeInfo = st;
// Use the default script class behaviours
st->beh.construct = 0;
st->beh.addref = engine->scriptTypeBehaviours.beh.addref;
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engine->scriptFunctions[st->beh.addref]->AddRefInternal();
st->beh.release = engine->scriptTypeBehaviours.beh.release;
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engine->scriptFunctions[st->beh.release]->AddRefInternal();
st->beh.copy = 0;
return 0;
}
void asCBuilder::CompileGlobalVariables()
{
bool compileSucceeded = true;
// Store state of compilation (errors, warning, output)
int currNumErrors = numErrors;
int currNumWarnings = numWarnings;
// Backup the original message stream
bool msgCallback = engine->msgCallback;
asSSystemFunctionInterface msgCallbackFunc = engine->msgCallbackFunc;
void *msgCallbackObj = engine->msgCallbackObj;
// Set the new temporary message stream
asCOutputBuffer outBuffer;
engine->SetMessageCallback(asMETHOD(asCOutputBuffer, Callback), &outBuffer, asCALL_THISCALL);
asCOutputBuffer finalOutput;
asCScriptFunction *initFunc = 0;
asCSymbolTable<asCGlobalProperty> initOrder;
// We first try to compile all the primitive global variables, and only after that
// compile the non-primitive global variables. This permits the constructors
// for the complex types to use the already initialized variables of primitive
// type. Note, we currently don't know which global variables are used in the
// constructors, so we cannot guarantee that variables of complex types are
// initialized in the correct order, so we won't reorder those.
bool compilingPrimitives = true;
// Compile each global variable
while( compileSucceeded )
{
compileSucceeded = false;
int accumErrors = 0;
int accumWarnings = 0;
// Restore state of compilation
finalOutput.Clear();
asCSymbolTable<sGlobalVariableDescription>::iterator it = globVariables.List();
for( ; it; it++ )
{
sGlobalVariableDescription *gvar = *it;
if( gvar->isCompiled )
continue;
asCByteCode init(engine);
numWarnings = 0;
numErrors = 0;
outBuffer.Clear();
// Skip this for now if we're not compiling complex types yet
if( compilingPrimitives && !gvar->datatype.IsPrimitive() )
continue;
if( gvar->declaredAtNode )
{
int r, c;
gvar->script->ConvertPosToRowCol(gvar->declaredAtNode->tokenPos, &r, &c);
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asCString str = gvar->datatype.Format(gvar->ns);
str += " " + gvar->name;
str.Format(TXT_COMPILING_s, str.AddressOf());
WriteInfo(gvar->script->name, str, r, c, true);
}
if( gvar->isEnumValue )
{
int r;
if( gvar->initializationNode )
{
asCCompiler comp(engine);
asCScriptFunction func(engine, module, asFUNC_SCRIPT);
// Set the namespace that should be used during the compilation
func.nameSpace = gvar->datatype.GetTypeInfo()->nameSpace;
// Temporarily switch the type of the variable to int so it can be compiled properly
asCDataType saveType;
saveType = gvar->datatype;
gvar->datatype = asCDataType::CreatePrimitive(ttInt, true);
r = comp.CompileGlobalVariable(this, gvar->script, gvar->initializationNode, gvar, &func);
gvar->datatype = saveType;
// Make the function a dummy so it doesn't try to release objects while destroying the function
func.funcType = asFUNC_DUMMY;
}
else
{
r = 0;
// When there is no assignment the value is the last + 1
int enumVal = 0;
asCSymbolTable<sGlobalVariableDescription>::iterator prev_it = it;
prev_it--;
if( prev_it )
{
sGlobalVariableDescription *gvar2 = *prev_it;
if(gvar2->datatype == gvar->datatype )
{
enumVal = int(gvar2->constantValue) + 1;
if( !gvar2->isCompiled )
{
int row, col;
gvar->script->ConvertPosToRowCol(gvar->declaredAtNode->tokenPos, &row, &col);
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asCString str = gvar->datatype.Format(gvar->ns);
str += " " + gvar->name;
str.Format(TXT_COMPILING_s, str.AddressOf());
WriteInfo(gvar->script->name, str, row, col, true);
str.Format(TXT_UNINITIALIZED_GLOBAL_VAR_s, gvar2->name.AddressOf());
WriteError(gvar->script->name, str, row, col);
r = -1;
}
}
}
gvar->constantValue = enumVal;
}
if( r >= 0 )
{
// Set the value as compiled
gvar->isCompiled = true;
compileSucceeded = true;
}
}
else
{
// Compile the global variable
initFunc = asNEW(asCScriptFunction)(engine, module, asFUNC_SCRIPT);
if( initFunc == 0 )
{
// Out of memory
return;
}
// Set the namespace that should be used for this function
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initFunc->nameSpace = gvar->ns;
asCCompiler comp(engine);
int r = comp.CompileGlobalVariable(this, gvar->script, gvar->initializationNode, gvar, initFunc);
if( r >= 0 )
{
// Compilation succeeded
gvar->isCompiled = true;
compileSucceeded = true;
}
else
{
// Compilation failed
initFunc->funcType = asFUNC_DUMMY;
asDELETE(initFunc, asCScriptFunction);
initFunc = 0;
}
}
if( gvar->isCompiled )
{
// Add warnings for this constant to the total build
if( numWarnings )
{
currNumWarnings += numWarnings;
if( msgCallback )
outBuffer.SendToCallback(engine, &msgCallbackFunc, msgCallbackObj);
}
// Determine order of variable initializations
if( gvar->property && !gvar->isEnumValue )
initOrder.Put(gvar->property);
// Does the function contain more than just a SUSPEND followed by a RET instruction?
if( initFunc && initFunc->scriptData->byteCode.GetLength() > 2 )
{
// Create the init function for this variable
initFunc->id = engine->GetNextScriptFunctionId();
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engine->AddScriptFunction(initFunc);
// Finalize the init function for this variable
initFunc->returnType = asCDataType::CreatePrimitive(ttVoid, false);
initFunc->scriptData->scriptSectionIdx = engine->GetScriptSectionNameIndex(gvar->script->name.AddressOf());
if( gvar->declaredAtNode )
{
int row, col;
gvar->script->ConvertPosToRowCol(gvar->declaredAtNode->tokenPos, &row, &col);
initFunc->scriptData->declaredAt = (row & 0xFFFFF)|((col & 0xFFF)<<20);
}
gvar->property->SetInitFunc(initFunc);
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initFunc->ReleaseInternal();
initFunc = 0;
}
else if( initFunc )
{
// Destroy the function as it won't be used
initFunc->funcType = asFUNC_DUMMY;
asDELETE(initFunc, asCScriptFunction);
initFunc = 0;
}
// Convert enums to true enum values, so subsequent compilations can access it as an enum
if( gvar->isEnumValue )
{
asCEnumType *enumType = CastToEnumType(gvar->datatype.GetTypeInfo());
asASSERT(NULL != enumType);
asSEnumValue *e = asNEW(asSEnumValue);
if( e == 0 )
{
// Out of memory
numErrors++;
return;
}
e->name = gvar->name;
e->value = int(gvar->constantValue);
enumType->enumValues.PushLast(e);
}
}
else
{
// Add output to final output
finalOutput.Append(outBuffer);
accumErrors += numErrors;
accumWarnings += numWarnings;
}
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engine->preMessage.isSet = false;
}
if( !compileSucceeded )
{
if( compilingPrimitives )
{
// No more primitives could be compiled, so
// switch to compiling the complex variables
compilingPrimitives = false;
compileSucceeded = true;
}
else
{
// No more variables can be compiled
// Add errors and warnings to total build
currNumWarnings += accumWarnings;
currNumErrors += accumErrors;
if( msgCallback )
finalOutput.SendToCallback(engine, &msgCallbackFunc, msgCallbackObj);
}
}
}
// Restore states
engine->msgCallback = msgCallback;
engine->msgCallbackFunc = msgCallbackFunc;
engine->msgCallbackObj = msgCallbackObj;
numWarnings = currNumWarnings;
numErrors = currNumErrors;
// Set the correct order of initialization
if( numErrors == 0 )
{
// If the length of the arrays are not the same, then this is the compilation
// of a single variable, in which case the initialization order of the previous
// variables must be preserved.
if( module->scriptGlobals.GetSize() == initOrder.GetSize() )
module->scriptGlobals.SwapWith(initOrder);
}
// Delete the enum expressions
asCSymbolTableIterator<sGlobalVariableDescription> it = globVariables.List();
while( it )
{
sGlobalVariableDescription *gvar = *it;
if( gvar->isEnumValue )
{
// Remove from symboltable. This has to be done prior to freeing the memeory
globVariables.Erase(it.GetIndex());
// Destroy the gvar property
if( gvar->declaredAtNode )
{
gvar->declaredAtNode->Destroy(engine);
gvar->declaredAtNode = 0;
}
if( gvar->initializationNode )
{
gvar->initializationNode->Destroy(engine);
gvar->initializationNode = 0;
}
if( gvar->property )
{
asDELETE(gvar->property, asCGlobalProperty);
gvar->property = 0;
}
asDELETE(gvar, sGlobalVariableDescription);
}
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else
it++;
}
}
int asCBuilder::GetNamespaceAndNameFromNode(asCScriptNode *n, asCScriptCode *script, asSNameSpace *implicitNs, asSNameSpace *&outNs, asCString &outName)
{
// TODO: child funcdef: The node might be a snScope now
asASSERT( n->nodeType == snIdentifier );
// Get the optional scope from the node
// TODO: child funcdef: The parentType will be set if the scope is actually a type rather than a namespace
asSNameSpace *ns = GetNameSpaceFromNode(n->firstChild, script, implicitNs, 0);
if( ns == 0 )
return -1;
// Get the name
asCString name(&script->code[n->lastChild->tokenPos], n->lastChild->tokenLength);
outNs = ns;
outName = name;
return 0;
}
void asCBuilder::AddInterfaceFromMixinToClass(sClassDeclaration *decl, asCScriptNode *errNode, sMixinClass *mixin)
{
// Determine what interfaces that the mixin implements
asCScriptNode *node = mixin->node;
asASSERT(node->nodeType == snClass);
// Skip the name of the mixin
node = node->firstChild->next;
while( node && node->nodeType == snIdentifier )
{
bool ok = true;
asSNameSpace *ns;
asCString name;
if( GetNamespaceAndNameFromNode(node, mixin->script, mixin->ns, ns, name) < 0 )
ok = false;
else
{
// Find the object type for the interface
asCObjectType *objType = GetObjectType(name.AddressOf(), ns);
// Check that the object type is an interface
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if( objType && objType->IsInterface() )
{
// Only add the interface if the class doesn't already implement it
if( !decl->typeInfo->Implements(objType) )
AddInterfaceToClass(decl, errNode, objType);
}
else
{
WriteError(TXT_MIXIN_CLASS_CANNOT_INHERIT, mixin->script, node);
ok = false;
}
}
if( !ok )
{
// Remove this node so the error isn't reported again
asCScriptNode *delNode = node;
node = node->prev;
delNode->DisconnectParent();
delNode->Destroy(engine);
}
node = node->next;
}
}
void asCBuilder::AddInterfaceToClass(sClassDeclaration *decl, asCScriptNode *errNode, asCObjectType *intfType)
{
// A shared type may only implement from shared interfaces
if( decl->typeInfo->IsShared() && !intfType->IsShared() )
{
asCString msg;
msg.Format(TXT_SHARED_CANNOT_IMPLEMENT_NON_SHARED_s, intfType->name.AddressOf());
WriteError(msg, decl->script, errNode);
return;
}
if( decl->isExistingShared )
{
// If the class is an existing shared class, then just check if the
// interface exists in the original declaration too
if( !decl->typeInfo->Implements(intfType) )
{
asCString str;
str.Format(TXT_SHARED_s_DOESNT_MATCH_ORIGINAL, decl->typeInfo->GetName());
WriteError(str, decl->script, errNode);
return;
}
}
else
{
// If the interface is already in the class then don't add it again
if( decl->typeInfo->Implements(intfType) )
return;
// Add the interface to the class
CastToObjectType(decl->typeInfo)->interfaces.PushLast(intfType);
// Add the inherited interfaces too
// For interfaces this will be done outside to handle out-of-order declarations
if( !CastToObjectType(decl->typeInfo)->IsInterface() )
{
for( asUINT n = 0; n < intfType->interfaces.GetLength(); n++ )
AddInterfaceToClass(decl, errNode, intfType->interfaces[n]);
}
}
}
void asCBuilder::CompileInterfaces()
{
asUINT n;
// Order the interfaces with inheritances so that the inherited
// of inherited interfaces can be added properly
for( n = 0; n < interfaceDeclarations.GetLength(); n++ )
{
sClassDeclaration *intfDecl = interfaceDeclarations[n];
asCObjectType *intfType = CastToObjectType(intfDecl->typeInfo);
if( intfType->interfaces.GetLength() == 0 ) continue;
// If any of the derived interfaces are found after this interface, then move this to the end of the list
for( asUINT m = n+1; m < interfaceDeclarations.GetLength(); m++ )
{
if( intfType->Implements(interfaceDeclarations[m]->typeInfo) )
{
interfaceDeclarations.RemoveIndex(n);
interfaceDeclarations.PushLast(intfDecl);
// Decrease index so that we don't skip an entry
n--;
break;
}
}
}
// Now recursively add the additional inherited interfaces
for( n = 0; n < interfaceDeclarations.GetLength(); n++ )
{
sClassDeclaration *intfDecl = interfaceDeclarations[n];
asCObjectType *intfType = CastToObjectType(intfDecl->typeInfo);
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// TODO: Is this really at the correct place? Hasn't the vfTableIdx already been set here?
// Co-opt the vfTableIdx value in our own methods to indicate the
// index the function should have in the table chunk for this interface.
for( asUINT d = 0; d < intfType->methods.GetLength(); d++ )
{
asCScriptFunction *func = GetFunctionDescription(intfType->methods[d]);
func->vfTableIdx = d;
asASSERT(func->objectType == intfType);
}
// As new interfaces will be added to the end of the list, all
// interfaces will be traversed the same as recursively
for( asUINT m = 0; m < intfType->interfaces.GetLength(); m++ )
{
asCObjectType *base = intfType->interfaces[m];
// Add any interfaces not already implemented
for( asUINT l = 0; l < base->interfaces.GetLength(); l++ )
AddInterfaceToClass(intfDecl, intfDecl->node, base->interfaces[l]);
// Add the methods from the implemented interface
for( asUINT l = 0; l < base->methods.GetLength(); l++ )
{
// If the derived interface implements the same method, then don't add the base interface' method
asCScriptFunction *baseFunc = GetFunctionDescription(base->methods[l]);
asCScriptFunction *derivedFunc = 0;
bool found = false;
for( asUINT d = 0; d < intfType->methods.GetLength(); d++ )
{
derivedFunc = GetFunctionDescription(intfType->methods[d]);
if( derivedFunc->IsSignatureEqual(baseFunc) )
{
found = true;
break;
}
}
if( !found )
{
// Add the method
intfType->methods.PushLast(baseFunc->id);
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baseFunc->AddRefInternal();
}
}
}
}
}
void asCBuilder::DetermineTypeRelations()
{
// Determine inheritance between interfaces
for (asUINT n = 0; n < interfaceDeclarations.GetLength(); n++)
{
sClassDeclaration *intfDecl = interfaceDeclarations[n];
asCObjectType *intfType = CastToObjectType(intfDecl->typeInfo);
asCScriptNode *node = intfDecl->node;
asASSERT(node && node->nodeType == snInterface);
node = node->firstChild;
// Skip the 'shared' & 'external' keywords
while( node->nodeType == snIdentifier &&
(intfDecl->script->TokenEquals(node->tokenPos, node->tokenLength, SHARED_TOKEN) ||
intfDecl->script->TokenEquals(node->tokenPos, node->tokenLength, EXTERNAL_TOKEN)) )
node = node->next;
// Skip the name
node = node->next;
// Verify the inherited interfaces
while (node && node->nodeType == snIdentifier)
{
asSNameSpace *ns;
asCString name;
if (GetNamespaceAndNameFromNode(node, intfDecl->script, intfType->nameSpace, ns, name) < 0)
{
node = node->next;
continue;
}
// Find the object type for the interface
asCObjectType *objType = 0;
while (ns)
{
objType = GetObjectType(name.AddressOf(), ns);
if (objType) break;
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ns = engine->GetParentNameSpace(ns);
}
// Check that the object type is an interface
bool ok = true;
if (objType && objType->IsInterface())
{
// Check that the implemented interface is shared if the base interface is shared
if (intfType->IsShared() && !objType->IsShared())
{
asCString str;
str.Format(TXT_SHARED_CANNOT_IMPLEMENT_NON_SHARED_s, objType->GetName());
WriteError(str, intfDecl->script, node);
ok = false;
}
}
else
{
WriteError(TXT_INTERFACE_CAN_ONLY_IMPLEMENT_INTERFACE, intfDecl->script, node);
ok = false;
}
if (ok)
{
// Make sure none of the implemented interfaces implement from this one
asCObjectType *base = objType;
while (base != 0)
{
if (base == intfType)
{
WriteError(TXT_CANNOT_IMPLEMENT_SELF, intfDecl->script, node);
ok = false;
break;
}
// At this point there is at most one implemented interface
if (base->interfaces.GetLength())
base = base->interfaces[0];
else
break;
}
}
if (ok)
AddInterfaceToClass(intfDecl, node, objType);
// Remove the nodes so they aren't parsed again
asCScriptNode *delNode = node;
node = node->next;
delNode->DisconnectParent();
delNode->Destroy(engine);
}
}
// Determine class inheritances and interfaces
for (asUINT n = 0; n < classDeclarations.GetLength(); n++)
{
sClassDeclaration *decl = classDeclarations[n];
asCScriptCode *file = decl->script;
// Find the base class that this class inherits from
bool multipleInheritance = false;
asCScriptNode *node = decl->node->firstChild;
while (file->TokenEquals(node->tokenPos, node->tokenLength, FINAL_TOKEN) ||
file->TokenEquals(node->tokenPos, node->tokenLength, SHARED_TOKEN) ||
file->TokenEquals(node->tokenPos, node->tokenLength, ABSTRACT_TOKEN) ||
file->TokenEquals(node->tokenPos, node->tokenLength, EXTERNAL_TOKEN))
{
node = node->next;
}
// Skip the name of the class
asASSERT(node->tokenType == ttIdentifier);
node = node->next;
while (node && node->nodeType == snIdentifier)
{
asSNameSpace *ns;
asCString name;
if (GetNamespaceAndNameFromNode(node, file, decl->typeInfo->nameSpace, ns, name) < 0)
{
node = node->next;
continue;
}
// Find the object type for the interface
asCObjectType *objType = 0;
sMixinClass *mixin = 0;
asSNameSpace *origNs = ns;
while (ns)
{
objType = GetObjectType(name.AddressOf(), ns);
if (objType == 0)
mixin = GetMixinClass(name.AddressOf(), ns);
if (objType || mixin)
break;
ns = engine->GetParentNameSpace(ns);
}
if (objType == 0 && mixin == 0)
{
asCString str;
if (origNs->name == "")
str.Format(TXT_IDENTIFIER_s_NOT_DATA_TYPE_IN_GLOBAL_NS, name.AddressOf());
else
str.Format(TXT_IDENTIFIER_s_NOT_DATA_TYPE_IN_NS_s, name.AddressOf(), origNs->name.AddressOf());
WriteError(str, file, node);
}
else if (mixin)
{
AddInterfaceFromMixinToClass(decl, node, mixin);
}
else if (!(objType->flags & asOBJ_SCRIPT_OBJECT) ||
(objType->flags & asOBJ_NOINHERIT))
{
// Either the class is not a script class or interface
// or the class has been declared as 'final'
asCString str;
str.Format(TXT_CANNOT_INHERIT_FROM_s_FINAL, objType->name.AddressOf());
WriteError(str, file, node);
}
else if (objType->size != 0)
{
// The class inherits from another script class
if (!decl->isExistingShared && CastToObjectType(decl->typeInfo)->derivedFrom != 0)
{
if (!multipleInheritance)
{
WriteError(TXT_CANNOT_INHERIT_FROM_MULTIPLE_CLASSES, file, node);
multipleInheritance = true;
}
}
else
{
// Make sure none of the base classes inherit from this one
asCObjectType *base = objType;
bool error = false;
while (base != 0)
{
if (base == decl->typeInfo)
{
WriteError(TXT_CANNOT_INHERIT_FROM_SELF, file, node);
error = true;
break;
}
base = base->derivedFrom;
}
if (!error)
{
// A shared type may only inherit from other shared types
if ((decl->typeInfo->IsShared()) && !(objType->IsShared()))
{
asCString msg;
msg.Format(TXT_SHARED_CANNOT_INHERIT_FROM_NON_SHARED_s, objType->name.AddressOf());
WriteError(msg, file, node);
error = true;
}
}
if (!error)
{
if (decl->isExistingShared)
{
// Verify that the base class is the same as the original shared type
if (CastToObjectType(decl->typeInfo)->derivedFrom != objType)
{
asCString str;
str.Format(TXT_SHARED_s_DOESNT_MATCH_ORIGINAL, decl->typeInfo->GetName());
WriteError(str, file, node);
}
}
else
{
// Set the base class
CastToObjectType(decl->typeInfo)->derivedFrom = objType;
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objType->AddRefInternal();
}
}
}
}
else
{
// The class implements an interface
AddInterfaceToClass(decl, node, objType);
}
node = node->next;
}
}
}
// numTempl is the number of template instances that existed in the engine before the build begun
void asCBuilder::CompileClasses(asUINT numTempl)
{
asUINT n;
asCArray<sClassDeclaration*> toValidate((int)classDeclarations.GetLength());
// Order class declarations so that base classes are compiled before derived classes.
// This will allow the derived classes to copy properties and methods in the next step.
for( n = 0; n < classDeclarations.GetLength(); n++ )
{
sClassDeclaration *decl = classDeclarations[n];
asCObjectType *derived = CastToObjectType(decl->typeInfo);
asCObjectType *base = derived->derivedFrom;
if( base == 0 ) continue;
// If the base class is found after the derived class, then move the derived class to the end of the list
for( asUINT m = n+1; m < classDeclarations.GetLength(); m++ )
{
sClassDeclaration *declBase = classDeclarations[m];
if( base == declBase->typeInfo )
{
classDeclarations.RemoveIndex(n);
classDeclarations.PushLast(decl);
// Decrease index so that we don't skip an entry
n--;
break;
}
}
}
// Go through each of the classes and register the object type descriptions
for( n = 0; n < classDeclarations.GetLength(); n++ )
{
sClassDeclaration *decl = classDeclarations[n];
asCObjectType *ot = CastToObjectType(decl->typeInfo);
if( decl->isExistingShared )
{
// Set the declaration as validated already, so that other
// types that contain this will accept this type
decl->validState = 1;
// We'll still validate the declaration to make sure nothing new is
// added to the shared class that wasn't there in the previous
// compilation. We do not care if something that is there in the previous
// declaration is not included in the new declaration though.
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asASSERT( ot->interfaces.GetLength() == ot->interfaceVFTOffsets.GetLength() );
}
// Methods included from mixin classes should take precedence over inherited methods
IncludeMethodsFromMixins(decl);
// Add all properties and methods from the base class
if( !decl->isExistingShared && ot->derivedFrom )
{
asCObjectType *baseType = ot->derivedFrom;
// The derived class inherits all interfaces from the base class
for( unsigned int m = 0; m < baseType->interfaces.GetLength(); m++ )
{
if( !ot->Implements(baseType->interfaces[m]) )
ot->interfaces.PushLast(baseType->interfaces[m]);
}
// TODO: Need to check for name conflict with new class methods
// Copy properties from base class to derived class
for( asUINT p = 0; p < baseType->properties.GetLength(); p++ )
{
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asCObjectProperty *prop = AddPropertyToClass(decl, baseType->properties[p]->name, baseType->properties[p]->type, baseType->properties[p]->isPrivate, baseType->properties[p]->isProtected, true);
// The properties must maintain the same offset
asASSERT(prop && prop->byteOffset == baseType->properties[p]->byteOffset); UNUSED_VAR(prop);
}
// Copy methods from base class to derived class
for( asUINT m = 0; m < baseType->methods.GetLength(); m++ )
{
// If the derived class implements the same method, then don't add the base class' method
asCScriptFunction *baseFunc = GetFunctionDescription(baseType->methods[m]);
asCScriptFunction *derivedFunc = 0;
bool found = false;
for( asUINT d = 0; d < ot->methods.GetLength(); d++ )
{
derivedFunc = GetFunctionDescription(ot->methods[d]);
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if( baseFunc->name == "opConv" || baseFunc->name == "opImplConv" ||
baseFunc->name == "opCast" || baseFunc->name == "opImplCast" )
{
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// For the opConv and opCast methods, the return type can differ if they are different methods
if( derivedFunc->name == baseFunc->name &&
derivedFunc->IsSignatureExceptNameEqual(baseFunc) )
{
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if( baseFunc->IsFinal() )
{
asCString msg;
msg.Format(TXT_METHOD_CANNOT_OVERRIDE_s, baseFunc->GetDeclaration());
WriteError(msg, decl->script, decl->node);
}
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// Move the function from the methods array to the virtualFunctionTable
ot->methods.RemoveIndex(d);
ot->virtualFunctionTable.PushLast(derivedFunc);
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found = true;
break;
}
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}
else
{
if( derivedFunc->name == baseFunc->name &&
derivedFunc->IsSignatureExceptNameAndReturnTypeEqual(baseFunc) )
{
if( baseFunc->returnType != derivedFunc->returnType )
{
asCString msg;
msg.Format(TXT_DERIVED_METHOD_MUST_HAVE_SAME_RETTYPE_s, baseFunc->GetDeclaration());
WriteError(msg, decl->script, decl->node);
}
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if( baseFunc->IsFinal() )
{
asCString msg;
msg.Format(TXT_METHOD_CANNOT_OVERRIDE_s, baseFunc->GetDeclaration());
WriteError(msg, decl->script, decl->node);
}
// Move the function from the methods array to the virtualFunctionTable
ot->methods.RemoveIndex(d);
ot->virtualFunctionTable.PushLast(derivedFunc);
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found = true;
break;
}
}
}
if( !found )
{
// Push the base class function on the virtual function table
ot->virtualFunctionTable.PushLast(baseType->virtualFunctionTable[m]);
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baseType->virtualFunctionTable[m]->AddRefInternal();
CheckForConflictsDueToDefaultArgs(decl->script, decl->node, baseType->virtualFunctionTable[m], ot);
}
ot->methods.PushLast(baseType->methods[m]);
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engine->scriptFunctions[baseType->methods[m]]->AddRefInternal();
}
}
if( !decl->isExistingShared )
{
// Move this class' methods into the virtual function table
for( asUINT m = 0; m < ot->methods.GetLength(); m++ )
{
asCScriptFunction *func = GetFunctionDescription(ot->methods[m]);
if( func->funcType != asFUNC_VIRTUAL )
{
// Move the reference from the method list to the virtual function list
ot->methods.RemoveIndex(m);
ot->virtualFunctionTable.PushLast(func);
// Substitute the function description in the method list for a virtual method
// Make sure the methods are in the same order as the virtual function table
ot->methods.PushLast(CreateVirtualFunction(func, (int)ot->virtualFunctionTable.GetLength() - 1));
m--;
}
}
// Make virtual function table chunks for each implemented interface
for( asUINT m = 0; m < ot->interfaces.GetLength(); m++ )
{
asCObjectType *intf = ot->interfaces[m];
// Add all the interface's functions to the virtual function table
asUINT offset = asUINT(ot->virtualFunctionTable.GetLength());
ot->interfaceVFTOffsets.PushLast(offset);
for( asUINT j = 0; j < intf->methods.GetLength(); j++ )
{
asCScriptFunction *intfFunc = GetFunctionDescription(intf->methods[j]);
// Only create the table for functions that are explicitly from this interface,
// inherited interface methods will be put in that interface's table.
if( intfFunc->objectType != intf )
continue;
asASSERT((asUINT)intfFunc->vfTableIdx == j);
//Find the interface function in the list of methods
asCScriptFunction *realFunc = 0;
for( asUINT p = 0; p < ot->methods.GetLength(); p++ )
{
asCScriptFunction *func = GetFunctionDescription(ot->methods[p]);
if( func->signatureId == intfFunc->signatureId )
{
if( func->funcType == asFUNC_VIRTUAL )
{
realFunc = ot->virtualFunctionTable[func->vfTableIdx];
}
else
{
// This should not happen, all methods were moved into the virtual table
asASSERT(false);
}
break;
}
}
// If realFunc is still null, the interface was not
// implemented and we error out later in the checks.
ot->virtualFunctionTable.PushLast(realFunc);
if( realFunc )
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realFunc->AddRefInternal();
}
}
}
// Enumerate each of the declared properties
asCScriptNode *node = decl->node->firstChild->next;
// Skip list of classes and interfaces
while( node && node->nodeType == snIdentifier )
node = node->next;
while( node && node->nodeType == snDeclaration )
{
asCScriptNode *nd = node->firstChild;
// Is the property declared as private or protected?
bool isPrivate = false, isProtected = false;
if( nd && nd->tokenType == ttPrivate )
{
isPrivate = true;
nd = nd->next;
}
else if( nd && nd->tokenType == ttProtected )
{
isProtected = true;
nd = nd->next;
}
// Determine the type of the property
asCScriptCode *file = decl->script;
asCDataType dt = CreateDataTypeFromNode(nd, file, ot->nameSpace, false, ot);
if( ot->IsShared() && dt.GetTypeInfo() && !dt.GetTypeInfo()->IsShared() )
{
asCString msg;
msg.Format(TXT_SHARED_CANNOT_USE_NON_SHARED_TYPE_s, dt.GetTypeInfo()->name.AddressOf());
WriteError(msg, file, node);
}
if( dt.IsReadOnly() )
WriteError(TXT_PROPERTY_CANT_BE_CONST, file, node);
// Multiple properties can be declared separated by ,
nd = nd->next;
while( nd )
{
asCString name(&file->code[nd->tokenPos], nd->tokenLength);
if( !decl->isExistingShared )
{
CheckNameConflictMember(ot, name.AddressOf(), nd, file, true);
AddPropertyToClass(decl, name, dt, isPrivate, isProtected, false, file, nd);
}
else
{
// Verify that the property exists in the original declaration
bool found = false;
for( asUINT p = 0; p < ot->properties.GetLength(); p++ )
{
asCObjectProperty *prop = ot->properties[p];
if( prop->isPrivate == isPrivate &&
prop->isProtected == isProtected &&
prop->name == name &&
prop->type.IsEqualExceptRef(dt) )
{
found = true;
break;
}
}
if( !found )
{
asCString str;
str.Format(TXT_SHARED_s_DOESNT_MATCH_ORIGINAL, ot->GetName());
WriteError(str, file, nd);
}
}
// Skip the initialization node
if( nd->next && nd->next->nodeType != snIdentifier )
nd = nd->next;
nd = nd->next;
}
node = node->next;
}
// Add properties from included mixin classes that don't conflict with existing properties
IncludePropertiesFromMixins(decl);
if( !decl->isExistingShared )
toValidate.PushLast(decl);
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asASSERT( ot->interfaces.GetLength() == ot->interfaceVFTOffsets.GetLength() );
}
// TODO: Warn if a method overrides a base method without marking it as 'override'.
// It must be possible to turn off this warning through engine property.
// TODO: A base class should be able to mark a method as 'abstract'. This will
// allow a base class to provide a partial implementation, but still force
// derived classes to implement specific methods.
// Verify that all interface methods are implemented in the classes
// We do this here so the base class' methods have already been inherited
for( n = 0; n < classDeclarations.GetLength(); n++ )
{
sClassDeclaration *decl = classDeclarations[n];
if( decl->isExistingShared ) continue;
asCObjectType *ot = CastToObjectType(decl->typeInfo);
asCArray<bool> overrideValidations(ot->GetMethodCount());
for( asUINT k = 0; k < ot->methods.GetLength(); k++ )
overrideValidations.PushLast( !static_cast<asCScriptFunction*>(ot->GetMethodByIndex(k, false))->IsOverride() );
for( asUINT m = 0; m < ot->interfaces.GetLength(); m++ )
{
asCObjectType *objType = ot->interfaces[m];
for( asUINT i = 0; i < objType->methods.GetLength(); i++ )
{
// Only check the interface methods that was explicitly declared in this interface
// Methods that was inherited from other interfaces will be checked in those interfaces
if( objType != engine->scriptFunctions[objType->methods[i]]->objectType )
continue;
asUINT overrideIndex;
if( !DoesMethodExist(ot, objType->methods[i], &overrideIndex) )
{
asCString str;
str.Format(TXT_MISSING_IMPLEMENTATION_OF_s,
engine->GetFunctionDeclaration(objType->methods[i]).AddressOf());
WriteError(str, decl->script, decl->node);
}
else
overrideValidations[overrideIndex] = true;
}
}
bool hasBaseClass = ot->derivedFrom != 0;
for( asUINT j = 0; j < overrideValidations.GetLength(); j++ )
{
if( !overrideValidations[j] && (!hasBaseClass || !DoesMethodExist(ot->derivedFrom, ot->methods[j])) )
{
asCString msg;
msg.Format(TXT_METHOD_s_DOES_NOT_OVERRIDE, ot->GetMethodByIndex(j, false)->GetDeclaration());
WriteError(msg, decl->script, decl->node);
}
}
}
// Verify that the declared structures are valid, e.g. that the structure
// doesn't contain a member of its own type directly or indirectly
while( toValidate.GetLength() > 0 )
{
asUINT numClasses = (asUINT)toValidate.GetLength();
asCArray<sClassDeclaration*> toValidateNext((int)toValidate.GetLength());
while( toValidate.GetLength() > 0 )
{
sClassDeclaration *decl = toValidate[toValidate.GetLength()-1];
asCObjectType *ot = CastToObjectType(decl->typeInfo);
int validState = 1;
for( n = 0; n < ot->properties.GetLength(); n++ )
{
// A valid structure is one that uses only primitives or other valid objects
asCObjectProperty *prop = ot->properties[n];
asCDataType dt = prop->type;
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// TODO: Add this check again, once solving the issues commented below
/*
if( dt.IsTemplate() )
{
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// TODO: This must verify all sub types, not just the first one
// TODO: Just because the subtype is not a handle doesn't mean the template will actually instance the object
// this it shouldn't automatically raise an error for this, e.g. weakref<Object> should be legal as member
// of the Object class
asCDataType sub = dt;
while( sub.IsTemplate() && !sub.IsObjectHandle() )
sub = sub.GetSubType();
dt = sub;
}
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*/
if( dt.IsObject() && !dt.IsObjectHandle() )
{
// Find the class declaration
sClassDeclaration *pdecl = 0;
for( asUINT p = 0; p < classDeclarations.GetLength(); p++ )
{
if( classDeclarations[p]->typeInfo == dt.GetTypeInfo() )
{
pdecl = classDeclarations[p];
break;
}
}
if( pdecl )
{
if( pdecl->typeInfo == decl->typeInfo )
{
WriteError(TXT_ILLEGAL_MEMBER_TYPE, decl->script, decl->node);
validState = 2;
break;
}
else if( pdecl->validState != 1 )
{
validState = pdecl->validState;
break;
}
}
}
}
if( validState == 1 )
{
decl->validState = 1;
toValidate.PopLast();
}
else if( validState == 2 )
{
decl->validState = 2;
toValidate.PopLast();
}
else
{
toValidateNext.PushLast(toValidate.PopLast());
}
}
toValidate = toValidateNext;
toValidateNext.SetLength(0);
if( numClasses == toValidate.GetLength() )
{
WriteError(TXT_ILLEGAL_MEMBER_TYPE, toValidate[0]->script, toValidate[0]->node);
break;
}
}
if( numErrors > 0 ) return;
// Verify which script classes can really form circular references, and mark only those as garbage collected.
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// This must be done in the correct order, so that a class that contains another class isn't needlessly marked
// as garbage collected, just because the contained class was evaluated afterwards.
// TODO: runtime optimize: This algorithm can be further improved by checking the types that inherits from
// a base class. If the base class is not shared all the classes that derive from it
// are known at compile time, and can thus be checked for potential circular references too.
//
// Observe, that doing this would conflict with another potential future feature, which is to
// allow incremental builds, i.e. allow application to add or replace classes in an
// existing module. However, the applications that want to use that should use a special
// build flag to not finalize the module.
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asCArray<asCObjectType*> typesToValidate;
for( n = 0; n < classDeclarations.GetLength(); n++ )
{
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// Existing shared classes won't need evaluating, nor interfaces
sClassDeclaration *decl = classDeclarations[n];
if( decl->isExistingShared ) continue;
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asCObjectType *ot = CastToObjectType(decl->typeInfo);
if( ot->IsInterface() ) continue;
typesToValidate.PushLast(ot);
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}
asUINT numReevaluations = 0;
while( typesToValidate.GetLength() )
{
if( numReevaluations > typesToValidate.GetLength() )
{
// No types could be completely evaluated in the last iteration so
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// we consider the remaining types in the array as garbage collected
break;
}
asCObjectType *type = typesToValidate[0];
typesToValidate.RemoveIndex(0);
// If the type inherits from another type that is yet to be validated, then reinsert it at the end
if( type->derivedFrom && typesToValidate.Exists(type->derivedFrom) )
{
typesToValidate.PushLast(type);
numReevaluations++;
continue;
}
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// If the type inherits from a known garbage collected type, then this type must also be garbage collected
if( type->derivedFrom && (type->derivedFrom->flags & asOBJ_GC) )
{
type->flags |= asOBJ_GC;
continue;
}
// Evaluate template instances (silently) before verifying each of the classes, since it is possible that
// a class will be marked as non-garbage collected, which in turn will mark the template instance that uses
// it as non-garbage collected, which in turn means the class that contains the array also do not have to be
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// garbage collected
EvaluateTemplateInstances(numTempl, true);
// Is there some path in which this structure is involved in circular references?
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// If the type contains a member of a type that is yet to be validated, then reinsert it at the end
bool mustReevaluate = false;
bool gc = false;
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for( asUINT p = 0; p < type->properties.GetLength(); p++ )
{
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asCDataType dt = type->properties[p]->type;
if (dt.IsFuncdef())
{
// If a class holds a function pointer as member then the class must be garbage collected as the
// function pointer can form circular references with the class through use of a delegate. Example:
//
// class A { B @b; void f(); }
// class B { F @f; }
// funcdef void F();
//
// A a;
// @a.b = B(); // instance of A refers to instance of B
// @a.b.f = F(a.f); // instance of B refers to delegate that refers to instance of A
//
gc = true;
break;
}
if( !dt.IsObject() )
continue;
if( typesToValidate.Exists(CastToObjectType(dt.GetTypeInfo())) )
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mustReevaluate = true;
else
{
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if( dt.IsTemplate() )
{
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// Check if any of the subtypes are yet to be evaluated
bool skip = false;
for( asUINT s = 0; s < dt.GetTypeInfo()->GetSubTypeCount(); s++ )
{
asCObjectType *t = reinterpret_cast<asCObjectType*>(dt.GetTypeInfo()->GetSubType(s));
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if( typesToValidate.Exists(t) )
{
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mustReevaluate = true;
skip = true;
break;
}
}
if( skip )
continue;
}
if( dt.IsObjectHandle() )
{
// If it is known that the handle can't be involved in a circular reference
// then this object doesn't need to be marked as garbage collected.
asCObjectType *prop = CastToObjectType(dt.GetTypeInfo());
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if( prop->flags & asOBJ_SCRIPT_OBJECT )
{
// For script objects, treat non-final classes as if they can contain references
// as it is not known what derived classes might do. For final types, check all
// properties to determine if any of those can cause a circular reference with this
// class.
if( prop->flags & asOBJ_NOINHERIT )
{
for( asUINT sp = 0; sp < prop->properties.GetLength(); sp++ )
{
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asCDataType sdt = prop->properties[sp]->type;
if( sdt.IsObject() )
{
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if( sdt.IsObjectHandle() )
{
// TODO: runtime optimize: If the handle is again to a final class, then we can recursively check if the circular reference can occur
if( sdt.GetTypeInfo()->flags & (asOBJ_SCRIPT_OBJECT | asOBJ_GC) )
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{
gc = true;
break;
}
}
else if( sdt.GetTypeInfo()->flags & asOBJ_GC )
{
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// TODO: runtime optimize: Just because the member type is a potential circle doesn't mean that this one is.
// Only if the object is of a type that can reference this type, either directly or indirectly
gc = true;
break;
}
}
}
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if( gc )
break;
}
else
{
// Assume it is garbage collected as it is not known at compile time what might inherit from this type
gc = true;
break;
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}
}
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else if( prop->flags & asOBJ_GC )
{
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// If a type is not a script object, adopt its GC flag
// TODO: runtime optimize: Just because an application registered class is garbage collected, doesn't mean it
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// can form a circular reference with this script class. Perhaps need a flag to tell
// if the script classes that contains the type should be garbage collected or not.
gc = true;
break;
}
}
else if( dt.GetTypeInfo()->flags & asOBJ_GC )
{
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// TODO: runtime optimize: Just because the member type is a potential circle doesn't mean that this one is.
// Only if the object is of a type that can reference this type, either directly or indirectly
gc = true;
break;
}
}
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}
// If the class wasn't found to require garbage collection, but it
// contains another type that has yet to be evaluated then it must be
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// re-evaluated.
if( !gc && mustReevaluate )
{
typesToValidate.PushLast(type);
numReevaluations++;
continue;
}
// Update the flag in the object type
if( gc )
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type->flags |= asOBJ_GC;
else
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type->flags &= ~asOBJ_GC;
// Reset the counter
numReevaluations = 0;
}
}
void asCBuilder::IncludeMethodsFromMixins(sClassDeclaration *decl)
{
asCScriptNode *node = decl->node->firstChild;
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// Skip the class attributes
while( node->nodeType == snIdentifier &&
!decl->script->TokenEquals(node->tokenPos, node->tokenLength, decl->name.AddressOf()) )
node = node->next;
// Skip the name of the class
node = node->next;
// Find the included mixin classes
while( node && node->nodeType == snIdentifier )
{
asSNameSpace *ns;
asCString name;
if( GetNamespaceAndNameFromNode(node, decl->script, decl->typeInfo->nameSpace, ns, name) < 0 )
{
node = node->next;
continue;
}
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sMixinClass *mixin = 0;
while( ns )
{
// Need to make sure the name is not an object type
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asCObjectType *objType = GetObjectType(name.AddressOf(), ns);
if( objType == 0 )
mixin = GetMixinClass(name.AddressOf(), ns);
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if( objType || mixin )
break;
ns = engine->GetParentNameSpace(ns);
}
if( mixin )
{
// Find methods from mixin declaration
asCScriptNode *n = mixin->node->firstChild;
// Skip to the member declarations
// Possible keywords 'final' and 'shared' are removed in RegisterMixinClass so we don't need to worry about those here
while( n && n->nodeType == snIdentifier )
n = n->next;
// Add methods from the mixin that are not already existing in the class
while( n )
{
if( n->nodeType == snFunction )
{
// Instead of disconnecting the node, we need to clone it, otherwise other
// classes that include the same mixin will not see the methods
asCScriptNode *copy = n->CreateCopy(engine);
// Register the method, but only if it doesn't already exist in the class
RegisterScriptFunctionFromNode(copy, mixin->script, CastToObjectType(decl->typeInfo), false, false, mixin->ns, false, true);
}
else if( n->nodeType == snVirtualProperty )
{
// TODO: mixin: Support virtual properties too
WriteError("The virtual property syntax is currently not supported for mixin classes", mixin->script, n);
//RegisterVirtualProperty(node, decl->script, decl->objType, false, false);
}
n = n->next;
}
}
node = node->next;
}
}
void asCBuilder::IncludePropertiesFromMixins(sClassDeclaration *decl)
{
asCScriptNode *node = decl->node->firstChild;
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// Skip the class attributes
while( node->nodeType == snIdentifier &&
!decl->script->TokenEquals(node->tokenPos, node->tokenLength, decl->name.AddressOf()) )
node = node->next;
// Skip the name of the class
node = node->next;
// Find the included mixin classes
while( node && node->nodeType == snIdentifier )
{
asSNameSpace *ns;
asCString name;
if( GetNamespaceAndNameFromNode(node, decl->script, decl->typeInfo->nameSpace, ns, name) < 0 )
{
node = node->next;
continue;
}
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sMixinClass *mixin = 0;
while( ns )
{
// Need to make sure the name is not an object type
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asCObjectType *objType = GetObjectType(name.AddressOf(), ns);
if( objType == 0 )
mixin = GetMixinClass(name.AddressOf(), ns);
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if( objType || mixin )
break;
ns = engine->GetParentNameSpace(ns);
}
if( mixin )
{
// Find properties from mixin declaration
asCScriptNode *n = mixin->node->firstChild;
// Skip to the member declarations
// Possible keywords 'final' and 'shared' are removed in RegisterMixinClass so we don't need to worry about those here
while( n && n->nodeType == snIdentifier )
n = n->next;
// Add properties from the mixin that are not already existing in the class
while( n )
{
if( n->nodeType == snDeclaration )
{
asCScriptNode *n2 = n->firstChild;
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bool isPrivate = false, isProtected = false;
if( n2 && n2->tokenType == ttPrivate )
{
isPrivate = true;
n2 = n2->next;
}
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else if( n2 && n2->tokenType == ttProtected )
{
isProtected = true;
n2 = n2->next;
}
asCScriptCode *file = mixin->script;
asCDataType dt = CreateDataTypeFromNode(n2, file, mixin->ns);
if( decl->typeInfo->IsShared() && dt.GetTypeInfo() && !dt.GetTypeInfo()->IsShared() )
{
asCString msg;
msg.Format(TXT_SHARED_CANNOT_USE_NON_SHARED_TYPE_s, dt.GetTypeInfo()->name.AddressOf());
WriteError(msg, file, n);
WriteInfo(TXT_WHILE_INCLUDING_MIXIN, decl->script, node);
}
if( dt.IsReadOnly() )
WriteError(TXT_PROPERTY_CANT_BE_CONST, file, n);
n2 = n2->next;
while( n2 )
{
name.Assign(&file->code[n2->tokenPos], n2->tokenLength);
// Add the property only if it doesn't already exist in the class
bool exists = false;
asCObjectType *ot = CastToObjectType(decl->typeInfo);
for( asUINT p = 0; p < ot->properties.GetLength(); p++ )
if( ot->properties[p]->name == name )
{
exists = true;
break;
}
if( !exists )
{
if( !decl->isExistingShared )
{
// It must not conflict with the name of methods
int r = CheckNameConflictMember(ot, name.AddressOf(), n2, file, true);
if( r < 0 )
WriteInfo(TXT_WHILE_INCLUDING_MIXIN, decl->script, node);
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AddPropertyToClass(decl, name, dt, isPrivate, isProtected, false, file, n2);
}
else
{
// Verify that the property exists in the original declaration
bool found = false;
for( asUINT p = 0; p < ot->properties.GetLength(); p++ )
{
asCObjectProperty *prop = ot->properties[p];
if( prop->isPrivate == isPrivate &&
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prop->isProtected == isProtected &&
prop->name == name &&
prop->type == dt )
{
found = true;
break;
}
}
if( !found )
{
asCString str;
str.Format(TXT_SHARED_s_DOESNT_MATCH_ORIGINAL, ot->GetName());
WriteError(str, decl->script, decl->node);
WriteInfo(TXT_WHILE_INCLUDING_MIXIN, decl->script, node);
}
}
}
// Skip the initialization expression
if( n2->next && n2->next->nodeType != snIdentifier )
n2 = n2->next;
n2 = n2->next;
}
}
n = n->next;
}
}
node = node->next;
}
}
int asCBuilder::CreateVirtualFunction(asCScriptFunction *func, int idx)
{
asCScriptFunction *vf = asNEW(asCScriptFunction)(engine, module, asFUNC_VIRTUAL);
if( vf == 0 )
return asOUT_OF_MEMORY;
vf->name = func->name;
vf->returnType = func->returnType;
vf->parameterTypes = func->parameterTypes;
vf->inOutFlags = func->inOutFlags;
vf->id = engine->GetNextScriptFunctionId();
vf->objectType = func->objectType;
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vf->objectType->AddRefInternal();
vf->signatureId = func->signatureId;
vf->vfTableIdx = idx;
vf->traits = func->traits;
// Clear the shared trait since the virtual function should not have that
vf->SetShared(false);
// It is not necessary to copy the default args, as they have no meaning in the virtual function
module->AddScriptFunction(vf);
// Add a dummy to the builder so that it doesn't mix up function ids
functions.PushLast(0);
return vf->id;
}
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asCObjectProperty *asCBuilder::AddPropertyToClass(sClassDeclaration *decl, const asCString &name, const asCDataType &dt, bool isPrivate, bool isProtected, bool isInherited, asCScriptCode *file, asCScriptNode *node)
{
if( node )
{
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asASSERT(!isInherited);
// Check if the property is allowed
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if( !dt.CanBeInstantiated() )
{
if( file && node )
{
asCString str;
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if( dt.IsAbstractClass() )
str.Format(TXT_ABSTRACT_CLASS_s_CANNOT_BE_INSTANTIATED, dt.Format(decl->typeInfo->nameSpace).AddressOf());
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else if( dt.IsInterface() )
str.Format(TXT_INTERFACE_s_CANNOT_BE_INSTANTIATED, dt.Format(decl->typeInfo->nameSpace).AddressOf());
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else
// TODO: Improve error message to explain why
str.Format(TXT_DATA_TYPE_CANT_BE_s, dt.Format(decl->typeInfo->nameSpace).AddressOf());
WriteError(str, file, node);
}
return 0;
}
// Register the initialization expression (if any) to be compiled later
asCScriptNode *declNode = node;
asCScriptNode *initNode = 0;
if( node->next && node->next->nodeType != snIdentifier )
{
asASSERT( node->next->nodeType == snAssignment );
initNode = node->next;
}
sPropertyInitializer p(name, declNode, initNode, file);
decl->propInits.PushLast(p);
}
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else
{
// If the declaration node is not given, then
// this property is inherited from a base class
asASSERT(isInherited);
}
// Add the property to the object type
return CastToObjectType(decl->typeInfo)->AddPropertyToClass(name, dt, isPrivate, isProtected, isInherited);
}
bool asCBuilder::DoesMethodExist(asCObjectType *objType, int methodId, asUINT *methodIndex)
{
asCScriptFunction *method = GetFunctionDescription(methodId);
for( asUINT n = 0; n < objType->methods.GetLength(); n++ )
{
asCScriptFunction *m = GetFunctionDescription(objType->methods[n]);
if( m->name != method->name ) continue;
if( m->returnType != method->returnType ) continue;
if( m->IsReadOnly() != method->IsReadOnly() ) continue;
if( m->parameterTypes != method->parameterTypes ) continue;
if( m->inOutFlags != method->inOutFlags ) continue;
if( methodIndex )
*methodIndex = n;
return true;
}
return false;
}
void asCBuilder::AddDefaultConstructor(asCObjectType *objType, asCScriptCode *file)
{
int funcId = engine->GetNextScriptFunctionId();
asCDataType returnType = asCDataType::CreatePrimitive(ttVoid, false);
asCArray<asCDataType> parameterTypes;
asCArray<asETypeModifiers> inOutFlags;
asCArray<asCString *> defaultArgs;
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asCArray<asCString> parameterNames;
// Add the script function
// TODO: declaredAt should be set to where the class has been declared
module->AddScriptFunction(file->idx, 0, funcId, objType->name, returnType, parameterTypes, parameterNames, inOutFlags, defaultArgs, false, objType, false, asSFunctionTraits(), objType->nameSpace);
// Set it as default constructor
if( objType->beh.construct )
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engine->scriptFunctions[objType->beh.construct]->ReleaseInternal();
objType->beh.construct = funcId;
objType->beh.constructors[0] = funcId;
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engine->scriptFunctions[funcId]->AddRefInternal();
// The bytecode for the default constructor will be generated
// only after the potential inheritance has been established
sFunctionDescription *func = asNEW(sFunctionDescription);
if( func == 0 )
{
// Out of memory
return;
}
functions.PushLast(func);
func->script = file;
func->node = 0;
func->name = objType->name;
func->objType = objType;
func->funcId = funcId;
func->isExistingShared = false;
// Add a default factory as well
funcId = engine->GetNextScriptFunctionId();
if( objType->beh.factory )
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engine->scriptFunctions[objType->beh.factory]->ReleaseInternal();
objType->beh.factory = funcId;
objType->beh.factories[0] = funcId;
returnType = asCDataType::CreateObjectHandle(objType, false);
// TODO: should be the same as the constructor
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module->AddScriptFunction(file->idx, 0, funcId, objType->name, returnType, parameterTypes, parameterNames, inOutFlags, defaultArgs, false);
functions.PushLast(0);
asCCompiler compiler(engine);
compiler.CompileFactory(this, file, engine->scriptFunctions[funcId]);
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engine->scriptFunctions[funcId]->AddRefInternal();
// If the object is shared, then the factory must also be marked as shared
if( objType->flags & asOBJ_SHARED )
engine->scriptFunctions[funcId]->SetShared(true);
}
int asCBuilder::RegisterEnum(asCScriptNode *node, asCScriptCode *file, asSNameSpace *ns)
{
// Is it a shared enum?
bool isShared = false;
bool isExternal = false;
asCEnumType *existingSharedType = 0;
asCScriptNode *tmp = node->firstChild;
while( tmp->nodeType == snIdentifier )
{
if (file->TokenEquals(tmp->tokenPos, tmp->tokenLength, SHARED_TOKEN))
isShared = true;
else if (file->TokenEquals(tmp->tokenPos, tmp->tokenLength, EXTERNAL_TOKEN))
isExternal = true;
else
break;
tmp = tmp->next;
}
// Grab the name of the enumeration
asCString name;
asASSERT(snDataType == tmp->nodeType);
asASSERT(snIdentifier == tmp->firstChild->nodeType);
name.Assign(&file->code[tmp->firstChild->tokenPos], tmp->firstChild->tokenLength);
if( isShared )
{
// Look for a pre-existing shared enum with the same signature
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for( asUINT n = 0; n < engine->sharedScriptTypes.GetLength(); n++ )
{
asCTypeInfo *o = engine->sharedScriptTypes[n];
if( o &&
o->IsShared() &&
(o->flags & asOBJ_ENUM) &&
o->name == name &&
o->nameSpace == ns )
{
existingSharedType = CastToEnumType(o);
break;
}
}
}
// If the enum was declared as external then it must have been compiled in a different module first
if (isExternal && existingSharedType == 0)
{
asCString str;
str.Format(TXT_EXTERNAL_SHARED_s_NOT_FOUND, name.AddressOf());
WriteError(str, file, tmp);
}
// Remember if the type was declared as external so the saved bytecode can be flagged accordingly
if (isExternal && existingSharedType)
module->externalTypes.PushLast(existingSharedType);
// Check the name and add the enum
int r = CheckNameConflict(name.AddressOf(), tmp->firstChild, file, ns);
if( asSUCCESS == r )
{
asCEnumType *st;
if( existingSharedType )
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{
st = existingSharedType;
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st->AddRefInternal();
}
else
{
st = asNEW(asCEnumType)(engine);
if( st == 0 )
return asOUT_OF_MEMORY;
st->flags = asOBJ_ENUM;
if( isShared )
st->flags |= asOBJ_SHARED;
st->size = 4;
st->name = name;
st->nameSpace = ns;
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st->module = module;
}
module->enumTypes.PushLast(st);
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if( !existingSharedType && isShared )
{
engine->sharedScriptTypes.PushLast(st);
st->AddRefInternal();
}
// Store the location of this declaration for reference in name collisions
sClassDeclaration *decl = asNEW(sClassDeclaration);
if( decl == 0 )
return asOUT_OF_MEMORY;
decl->name = name;
decl->script = file;
decl->typeInfo = st;
namedTypeDeclarations.PushLast(decl);
asCDataType type = CreateDataTypeFromNode(tmp, file, ns);
asASSERT(!type.IsReference());
// External shared enums must not redeclare the enum values
if (isExternal && (tmp->next == 0 || tmp->next->tokenType != ttEndStatement) )
{
asCString str;
str.Format(TXT_EXTERNAL_SHARED_s_CANNOT_REDEF, name.AddressOf());
WriteError(str, file, tmp);
}
else if (!isExternal && tmp->next && tmp->next->tokenType == ttEndStatement)
{
asCString str;
str.Format(TXT_MISSING_DEFINITION_OF_s, name.AddressOf());
WriteError(str, file, tmp);
}
// Register the enum values
tmp = tmp->next;
while( tmp && tmp->nodeType == snIdentifier )
{
name.Assign(&file->code[tmp->tokenPos], tmp->tokenLength);
if( existingSharedType )
{
// If this is a pre-existent shared enum, then just double check
// that the value is already defined in the original declaration
bool found = false;
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for( asUINT n = 0; n < st->enumValues.GetLength(); n++ )
if( st->enumValues[n]->name == name )
{
found = true;
break;
}
if( !found )
{
asCString str;
str.Format(TXT_SHARED_s_DOESNT_MATCH_ORIGINAL, st->GetName());
WriteError(str, file, tmp);
break;
}
tmp = tmp->next;
if( tmp && tmp->nodeType == snAssignment )
tmp = tmp->next;
continue;
}
else
{
// Check for name conflict errors with other values in the enum
if( globVariables.GetFirst(ns, name, asCCompGlobVarType(type)) )
{
asCString str;
str.Format(TXT_NAME_CONFLICT_s_ALREADY_USED, name.AddressOf());
WriteError(str, file, tmp);
tmp = tmp->next;
if( tmp && tmp->nodeType == snAssignment )
tmp = tmp->next;
continue;
}
// Check for assignment
asCScriptNode *asnNode = tmp->next;
if( asnNode && snAssignment == asnNode->nodeType )
asnNode->DisconnectParent();
else
asnNode = 0;
// Create the global variable description so the enum value can be evaluated
sGlobalVariableDescription *gvar = asNEW(sGlobalVariableDescription);
if( gvar == 0 )
return asOUT_OF_MEMORY;
gvar->script = file;
gvar->declaredAtNode = tmp;
tmp = tmp->next;
gvar->declaredAtNode->DisconnectParent();
gvar->initializationNode = asnNode;
gvar->name = name;
gvar->datatype = type;
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gvar->ns = ns;
// No need to allocate space on the global memory stack since the values are stored in the asCObjectType
// Set the index to a negative to allow compiler to diferentiate from ordinary global var when compiling the initialization
gvar->index = -1;
gvar->isCompiled = false;
gvar->isPureConstant = true;
gvar->isEnumValue = true;
gvar->constantValue = 0xdeadbeef;
// Allocate dummy property so we can compile the value.
// This will be removed later on so we don't add it to the engine.
gvar->property = asNEW(asCGlobalProperty);
if( gvar->property == 0 )
return asOUT_OF_MEMORY;
gvar->property->name = name;
gvar->property->nameSpace = ns;
gvar->property->type = gvar->datatype;
gvar->property->id = 0;
globVariables.Put(gvar);
}
}
}
node->Destroy(engine);
return r;
}
int asCBuilder::RegisterTypedef(asCScriptNode *node, asCScriptCode *file, asSNameSpace *ns)
{
// Get the native data type
asCScriptNode *tmp = node->firstChild;
asASSERT(NULL != tmp && snDataType == tmp->nodeType);
asCDataType dataType;
dataType.CreatePrimitive(tmp->tokenType, false);
dataType.SetTokenType(tmp->tokenType);
tmp = tmp->next;
// Grab the name of the typedef
asASSERT(NULL != tmp && NULL == tmp->next);
asCString name;
name.Assign(&file->code[tmp->tokenPos], tmp->tokenLength);
// If the name is not already in use add it
int r = CheckNameConflict(name.AddressOf(), tmp, file, ns);
asCTypedefType *st = 0;
if( asSUCCESS == r )
{
// Create the new type
st = asNEW(asCTypedefType)(engine);
if( st == 0 )
r = asOUT_OF_MEMORY;
}
if( asSUCCESS == r )
{
st->flags = asOBJ_TYPEDEF;
st->size = dataType.GetSizeInMemoryBytes();
st->name = name;
st->nameSpace = ns;
st->aliasForType = dataType;
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st->module = module;
module->typeDefs.PushLast(st);
// Store the location of this declaration for reference in name collisions
sClassDeclaration *decl = asNEW(sClassDeclaration);
if( decl == 0 )
r = asOUT_OF_MEMORY;
else
{
decl->name = name;
decl->script = file;
decl->typeInfo = st;
namedTypeDeclarations.PushLast(decl);
}
}
node->Destroy(engine);
return r;
}
void asCBuilder::GetParsedFunctionDetails(asCScriptNode *node, asCScriptCode *file, asCObjectType *objType, asCString &name, asCDataType &returnType, asCArray<asCString> &parameterNames, asCArray<asCDataType> &parameterTypes, asCArray<asETypeModifiers> &inOutFlags, asCArray<asCString *> &defaultArgs, asSFunctionTraits &funcTraits, asSNameSpace *implicitNamespace)
{
node = node->firstChild;
// Is the function shared?
funcTraits.SetTrait(asTRAIT_SHARED, false);
funcTraits.SetTrait(asTRAIT_EXTERNAL, false);
while (node->tokenType == ttIdentifier)
{
if (file->TokenEquals(node->tokenPos, node->tokenLength, SHARED_TOKEN))
funcTraits.SetTrait(asTRAIT_SHARED, true);
else if (file->TokenEquals(node->tokenPos, node->tokenLength, EXTERNAL_TOKEN))
funcTraits.SetTrait(asTRAIT_EXTERNAL, true);
else
break;
node = node->next;
}
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// Is the function a private or protected class method?
funcTraits.SetTrait(asTRAIT_PRIVATE, false);
funcTraits.SetTrait(asTRAIT_PROTECTED, false);
if( node->tokenType == ttPrivate )
{
funcTraits.SetTrait(asTRAIT_PRIVATE, true);
node = node->next;
}
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else if( node->tokenType == ttProtected )
{
funcTraits.SetTrait(asTRAIT_PROTECTED, true);
node = node->next;
}
// Find the name
funcTraits.SetTrait(asTRAIT_CONSTRUCTOR, false);
funcTraits.SetTrait(asTRAIT_DESTRUCTOR, false);
asCScriptNode *n = 0;
if( node->nodeType == snDataType )
n = node->next->next;
else
{
// If the first node is a ~ token, then we know it is a destructor
if( node->tokenType == ttBitNot )
{
n = node->next;
funcTraits.SetTrait(asTRAIT_DESTRUCTOR, true);
}
else
{
n = node;
funcTraits.SetTrait(asTRAIT_CONSTRUCTOR, true);
}
}
name.Assign(&file->code[n->tokenPos], n->tokenLength);
if( !funcTraits.GetTrait(asTRAIT_CONSTRUCTOR) && !funcTraits.GetTrait(asTRAIT_DESTRUCTOR) )
{
returnType = CreateDataTypeFromNode(node, file, implicitNamespace, false, objType);
returnType = ModifyDataTypeFromNode(returnType, node->next, file, 0, 0);
if( engine->ep.disallowValueAssignForRefType &&
returnType.GetTypeInfo() &&
(returnType.GetTypeInfo()->flags & asOBJ_REF) &&
!(returnType.GetTypeInfo()->flags & asOBJ_SCOPED) &&
!returnType.IsReference() &&
!returnType.IsObjectHandle() )
{
WriteError(TXT_REF_TYPE_CANT_BE_RETURNED_BY_VAL, file, node);
}
}
else
returnType = asCDataType::CreatePrimitive(ttVoid, false);
funcTraits.SetTrait(asTRAIT_CONST, false);
funcTraits.SetTrait(asTRAIT_FINAL, false);
funcTraits.SetTrait(asTRAIT_OVERRIDE, false);
if( objType && n->next->next )
{
asCScriptNode *decorator = n->next->next;
// Is this a const method?
if( decorator->tokenType == ttConst )
{
funcTraits.SetTrait(asTRAIT_CONST, true);
decorator = decorator->next;
}
while( decorator )
{
if( decorator->tokenType == ttIdentifier && file->TokenEquals(decorator->tokenPos, decorator->tokenLength, FINAL_TOKEN) )
funcTraits.SetTrait(asTRAIT_FINAL, true);
else if( decorator->tokenType == ttIdentifier && file->TokenEquals(decorator->tokenPos, decorator->tokenLength, OVERRIDE_TOKEN) )
funcTraits.SetTrait(asTRAIT_OVERRIDE, true);
decorator = decorator->next;
}
}
// Count the number of parameters
int count = 0;
asCScriptNode *c = n->next->firstChild;
while( c )
{
count++;
c = c->next->next;
if( c && c->nodeType == snIdentifier )
c = c->next;
if( c && c->nodeType == snExpression )
c = c->next;
}
// Get the parameter types
parameterNames.Allocate(count, false);
parameterTypes.Allocate(count, false);
inOutFlags.Allocate(count, false);
defaultArgs.Allocate(count, false);
n = n->next->firstChild;
while( n )
{
asETypeModifiers inOutFlag;
asCDataType type = CreateDataTypeFromNode(n, file, implicitNamespace, false, objType);
type = ModifyDataTypeFromNode(type, n->next, file, &inOutFlag, 0);
if( engine->ep.disallowValueAssignForRefType &&
type.GetTypeInfo() &&
(type.GetTypeInfo()->flags & asOBJ_REF) &&
!(type.GetTypeInfo()->flags & asOBJ_SCOPED) &&
!type.IsReference() &&
!type.IsObjectHandle() )
{
WriteError(TXT_REF_TYPE_CANT_BE_PASSED_BY_VAL, file, node);
}
// Store the parameter type
parameterTypes.PushLast(type);
inOutFlags.PushLast(inOutFlag);
// Move to next parameter
n = n->next->next;
if( n && n->nodeType == snIdentifier )
{
asCString paramName(&file->code[n->tokenPos], n->tokenLength);
parameterNames.PushLast(paramName);
n = n->next;
}
else
{
// No name was given for the parameter
parameterNames.PushLast(asCString());
}
if( n && n->nodeType == snExpression )
{
// Strip out white space and comments to better share the string
asCString *defaultArgStr = asNEW(asCString);
if( defaultArgStr )
*defaultArgStr = GetCleanExpressionString(n, file);
defaultArgs.PushLast(defaultArgStr);
n = n->next;
}
else
defaultArgs.PushLast(0);
}
}
#endif
asCString asCBuilder::GetCleanExpressionString(asCScriptNode *node, asCScriptCode *file)
{
asASSERT(node && node->nodeType == snExpression);
asCString str;
str.Assign(file->code + node->tokenPos, node->tokenLength);
asCString cleanStr;
for( asUINT n = 0; n < str.GetLength(); )
{
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asUINT len = 0;
asETokenClass tok = engine->ParseToken(str.AddressOf() + n, str.GetLength() - n, &len);
if( tok != asTC_COMMENT && tok != asTC_WHITESPACE )
{
if( cleanStr.GetLength() ) cleanStr += " ";
cleanStr.Concatenate(str.AddressOf() + n, len);
}
n += len;
}
return cleanStr;
}
#ifndef AS_NO_COMPILER
int asCBuilder::RegisterScriptFunctionFromNode(asCScriptNode *node, asCScriptCode *file, asCObjectType *objType, bool isInterface, bool isGlobalFunction, asSNameSpace *ns, bool isExistingShared, bool isMixin)
{
asCString name;
asCDataType returnType;
asCArray<asCString> parameterNames;
asCArray<asCDataType> parameterTypes;
asCArray<asETypeModifiers> inOutFlags;
asCArray<asCString *> defaultArgs;
asSFunctionTraits funcTraits;
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asASSERT( (objType && ns == 0) || isGlobalFunction || isMixin );
// Set the default namespace
if( ns == 0 )
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{
if( objType )
ns = objType->nameSpace;
else
ns = engine->nameSpaces[0];
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}
GetParsedFunctionDetails(node, file, objType, name, returnType, parameterNames, parameterTypes, inOutFlags, defaultArgs, funcTraits, ns);
return RegisterScriptFunction(node, file, objType, isInterface, isGlobalFunction, ns, isExistingShared, isMixin, name, returnType, parameterNames, parameterTypes, inOutFlags, defaultArgs, funcTraits);
}
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asCScriptFunction *asCBuilder::RegisterLambda(asCScriptNode *node, asCScriptCode *file, asCScriptFunction *funcDef, const asCString &name, asSNameSpace *ns)
{
// Get the parameter names from the node
asCArray<asCString> parameterNames;
asCArray<asCString*> defaultArgs;
asCScriptNode *args = node->firstChild;
while( args && args->nodeType == snIdentifier )
{
asCString argName;
argName.Assign(&file->code[args->tokenPos], args->tokenLength);
parameterNames.PushLast(argName);
defaultArgs.PushLast(0);
args = args->next;
}
// The statement block for the function must be disconnected, as the builder is going to be the owner of it
args->DisconnectParent();
// Get the return and parameter types from the funcDef
asCString funcName = name;
int r = RegisterScriptFunction(args, file, 0, 0, true, ns, false, false, funcName, funcDef->returnType, parameterNames, funcDef->parameterTypes, funcDef->inOutFlags, defaultArgs, asSFunctionTraits());
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if( r < 0 )
return 0;
// Return the function that was just created (but that will be compiled later)
return engine->scriptFunctions[functions[functions.GetLength()-1]->funcId];
}
int asCBuilder::RegisterScriptFunction(asCScriptNode *node, asCScriptCode *file, asCObjectType *objType, bool isInterface, bool isGlobalFunction, asSNameSpace *ns, bool isExistingShared, bool isMixin, asCString &name, asCDataType &returnType, asCArray<asCString> &parameterNames, asCArray<asCDataType> &parameterTypes, asCArray<asETypeModifiers> &inOutFlags, asCArray<asCString *> &defaultArgs, asSFunctionTraits funcTraits)
{
// Determine default namespace if not specified
if( ns == 0 )
{
if( objType )
ns = objType->nameSpace;
else
ns = engine->nameSpaces[0];
}
if( isExistingShared )
{
asASSERT( objType );
// Should validate that the function really exists in the class/interface
bool found = false;
if(funcTraits.GetTrait(asTRAIT_CONSTRUCTOR) || funcTraits.GetTrait(asTRAIT_DESTRUCTOR) )
{
// TODO: shared: Should check the existance of these too
found = true;
}
else
{
for( asUINT n = 0; n < objType->methods.GetLength(); n++ )
{
asCScriptFunction *func = engine->scriptFunctions[objType->methods[n]];
if( func->name == name &&
func->IsSignatureExceptNameEqual(returnType, parameterTypes, inOutFlags, objType, funcTraits.GetTrait(asTRAIT_CONST)) )
{
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// Add the shared function in this module too
module->AddScriptFunction(func);
found = true;
break;
}
}
}
if( !found )
{
asCString str;
str.Format(TXT_SHARED_s_DOESNT_MATCH_ORIGINAL, objType->GetName());
WriteError(str, file, node);
}
// Free the default args
for( asUINT n = 0; n < defaultArgs.GetLength(); n++ )
if( defaultArgs[n] )
asDELETE(defaultArgs[n], asCString);
node->Destroy(engine);
return 0;
}
// Check for name conflicts
if( !funcTraits.GetTrait(asTRAIT_CONSTRUCTOR) && !funcTraits.GetTrait(asTRAIT_DESTRUCTOR) )
{
if( objType )
{
CheckNameConflictMember(objType, name.AddressOf(), node, file, false);
if( name == objType->name )
WriteError(TXT_METHOD_CANT_HAVE_NAME_OF_CLASS, file, node);
}
else
CheckNameConflict(name.AddressOf(), node, file, ns);
}
else
{
if( isMixin )
{
// Mixins cannot implement constructors/destructors
WriteError(TXT_MIXIN_CANNOT_HAVE_CONSTRUCTOR, file, node);
// Free the default args
for( asUINT n = 0; n < defaultArgs.GetLength(); n++ )
if( defaultArgs[n] )
asDELETE(defaultArgs[n], asCString);
node->Destroy(engine);
return 0;
}
// Verify that the name of the constructor/destructor is the same as the class
if( name != objType->name )
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{
asCString str;
if(funcTraits.GetTrait(asTRAIT_DESTRUCTOR) )
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str.Format(TXT_DESTRUCTOR_s_s_NAME_ERROR, objType->name.AddressOf(), name.AddressOf());
else
str.Format(TXT_METHOD_s_s_HAS_NO_RETURN_TYPE, objType->name.AddressOf(), name.AddressOf());
WriteError(str, file, node);
}
if(funcTraits.GetTrait(asTRAIT_DESTRUCTOR))
name = "~" + name;
}
isExistingShared = false;
int funcId = engine->GetNextScriptFunctionId();
if( !isInterface )
{
sFunctionDescription *func = asNEW(sFunctionDescription);
if( func == 0 )
{
// Free the default args
for( asUINT n = 0; n < defaultArgs.GetLength(); n++ )
if( defaultArgs[n] )
asDELETE(defaultArgs[n], asCString);
return asOUT_OF_MEMORY;
}
functions.PushLast(func);
func->script = file;
func->node = node;
func->name = name;
func->objType = objType;
func->funcId = funcId;
func->isExistingShared = false;
func->paramNames = parameterNames;
if(funcTraits.GetTrait(asTRAIT_SHARED))
{
// Look for a pre-existing shared function with the same signature
for( asUINT n = 0; n < engine->scriptFunctions.GetLength(); n++ )
{
asCScriptFunction *f = engine->scriptFunctions[n];
if( f &&
f->IsShared() &&
f->name == name &&
f->nameSpace == ns &&
f->objectType == objType &&
f->IsSignatureExceptNameEqual(returnType, parameterTypes, inOutFlags, 0, false) )
{
funcId = func->funcId = f->id;
isExistingShared = func->isExistingShared = true;
break;
}
}
}
// Remember if the function was declared as external so the saved bytecode can be flagged accordingly
if (funcTraits.GetTrait(asTRAIT_EXTERNAL) && func->isExistingShared)
module->externalFunctions.PushLast(engine->scriptFunctions[func->funcId]);
if (funcTraits.GetTrait(asTRAIT_EXTERNAL) && !func->isExistingShared)
{
// Mark it as existing shared to avoid compiling it
func->isExistingShared = true;
asCString str;
str.Format(TXT_EXTERNAL_SHARED_s_NOT_FOUND, name.AddressOf());
WriteError(str, file, node);
}
// External shared function must not try to redefine the interface
if (funcTraits.GetTrait(asTRAIT_EXTERNAL) && !(node->tokenType == ttEndStatement || node->lastChild->tokenType == ttEndStatement))
{
asCString str;
str.Format(TXT_EXTERNAL_SHARED_s_CANNOT_REDEF, name.AddressOf());
WriteError(str, file, node);
}
else if (!funcTraits.GetTrait(asTRAIT_EXTERNAL) && !(node->nodeType == snStatementBlock || node->lastChild->nodeType == snStatementBlock) )
{
asCString str;
str.Format(TXT_MISSING_DEFINITION_OF_s, name.AddressOf());
WriteError(str, file, node);
}
}
// Destructors may not have any parameters
if (funcTraits.GetTrait(asTRAIT_DESTRUCTOR) && parameterTypes.GetLength() > 0)
WriteError(TXT_DESTRUCTOR_MAY_NOT_HAVE_PARM, file, node);
// If a function, class, or interface is shared then only shared types may be used in the signature
if( (objType && objType->IsShared()) || funcTraits.GetTrait(asTRAIT_SHARED))
{
asCTypeInfo *ti = returnType.GetTypeInfo();
if( ti && !ti->IsShared() )
{
asCString msg;
msg.Format(TXT_SHARED_CANNOT_USE_NON_SHARED_TYPE_s, ti->name.AddressOf());
WriteError(msg, file, node);
}
for( asUINT p = 0; p < parameterTypes.GetLength(); ++p )
{
ti = parameterTypes[p].GetTypeInfo();
if( ti && !ti->IsShared() )
{
asCString msg;
msg.Format(TXT_SHARED_CANNOT_USE_NON_SHARED_TYPE_s, ti->name.AddressOf());
WriteError(msg, file, node);
}
}
}
// Check that the same function hasn't been registered already in the namespace
asCArray<int> funcs;
if( objType )
GetObjectMethodDescriptions(name.AddressOf(), objType, funcs, false);
else
GetFunctionDescriptions(name.AddressOf(), funcs, ns);
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if( objType && (name == "opConv" || name == "opImplConv" || name == "opCast" || name == "opImplCast") && parameterTypes.GetLength() == 0 )
{
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// opConv and opCast are special methods used for type casts
for( asUINT n = 0; n < funcs.GetLength(); ++n )
{
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asCScriptFunction *func = GetFunctionDescription(funcs[n]);
if( func->IsSignatureExceptNameEqual(returnType, parameterTypes, inOutFlags, objType, funcTraits.GetTrait(asTRAIT_CONST)) )
{
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// TODO: clean up: Reuse the same error handling for both opConv and normal methods
if( isMixin )
{
// Clean up the memory, as the function will not be registered
if( node )
node->Destroy(engine);
sFunctionDescription *funcDesc = functions.PopLast();
asDELETE(funcDesc, sFunctionDescription);
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// Free the default args
for( n = 0; n < defaultArgs.GetLength(); n++ )
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if( defaultArgs[n] )
asDELETE(defaultArgs[n], asCString);
return 0;
}
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WriteError(TXT_FUNCTION_ALREADY_EXIST, file, node);
break;
}
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}
}
else
{
for( asUINT n = 0; n < funcs.GetLength(); ++n )
{
asCScriptFunction *func = GetFunctionDescription(funcs[n]);
if( func->IsSignatureExceptNameAndReturnTypeEqual(parameterTypes, inOutFlags, objType, funcTraits.GetTrait(asTRAIT_CONST)) )
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{
if( isMixin )
{
// Clean up the memory, as the function will not be registered
if( node )
node->Destroy(engine);
sFunctionDescription *funcDesc = functions.PopLast();
asDELETE(funcDesc, sFunctionDescription);
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// Free the default args
for( n = 0; n < defaultArgs.GetLength(); n++ )
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if( defaultArgs[n] )
asDELETE(defaultArgs[n], asCString);
return 0;
}
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WriteError(TXT_FUNCTION_ALREADY_EXIST, file, node);
break;
}
}
}
// Register the function
if( isExistingShared )
{
// Delete the default args as they won't be used anymore
for( asUINT n = 0; n < defaultArgs.GetLength(); n++ )
if( defaultArgs[n] )
asDELETE(defaultArgs[n], asCString);
asCScriptFunction *f = engine->scriptFunctions[funcId];
module->AddScriptFunction(f);
// TODO: clean up: This should be done by AddScriptFunction() itself
module->globalFunctions.Put(f);
}
else
{
int row = 0, col = 0;
if( node )
file->ConvertPosToRowCol(node->tokenPos, &row, &col);
module->AddScriptFunction(file->idx, (row&0xFFFFF)|((col&0xFFF)<<20), funcId, name, returnType, parameterTypes, parameterNames, inOutFlags, defaultArgs, isInterface, objType, isGlobalFunction, funcTraits, ns);
}
// Make sure the default args are declared correctly
ValidateDefaultArgs(file, node, engine->scriptFunctions[funcId]);
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CheckForConflictsDueToDefaultArgs(file, node, engine->scriptFunctions[funcId], objType);
if( objType )
{
asASSERT( !isExistingShared );
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engine->scriptFunctions[funcId]->AddRefInternal();
if(funcTraits.GetTrait(asTRAIT_CONSTRUCTOR))
{
int factoryId = engine->GetNextScriptFunctionId();
if( parameterTypes.GetLength() == 0 )
{
// Overload the default constructor
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engine->scriptFunctions[objType->beh.construct]->ReleaseInternal();
objType->beh.construct = funcId;
objType->beh.constructors[0] = funcId;
// Register the default factory as well
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engine->scriptFunctions[objType->beh.factory]->ReleaseInternal();
objType->beh.factory = factoryId;
objType->beh.factories[0] = factoryId;
}
else
{
objType->beh.constructors.PushLast(funcId);
// Register the factory as well
objType->beh.factories.PushLast(factoryId);
}
// We must copy the default arg strings to avoid deleting the same object multiple times
for( asUINT n = 0; n < defaultArgs.GetLength(); n++ )
if( defaultArgs[n] )
defaultArgs[n] = asNEW(asCString)(*defaultArgs[n]);
asCDataType dt = asCDataType::CreateObjectHandle(objType, false);
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module->AddScriptFunction(file->idx, engine->scriptFunctions[funcId]->scriptData->declaredAt, factoryId, name, dt, parameterTypes, parameterNames, inOutFlags, defaultArgs, false);
// If the object is shared, then the factory must also be marked as shared
if( objType->flags & asOBJ_SHARED )
engine->scriptFunctions[factoryId]->SetShared(true);
// Add a dummy function to the builder so that it doesn't mix up the fund Ids
functions.PushLast(0);
// Compile the factory immediately
asCCompiler compiler(engine);
compiler.CompileFactory(this, file, engine->scriptFunctions[factoryId]);
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engine->scriptFunctions[factoryId]->AddRefInternal();
}
else if(funcTraits.GetTrait(asTRAIT_DESTRUCTOR))
objType->beh.destruct = funcId;
else
{
// If the method is the assignment operator we need to replace the default implementation
asCScriptFunction *f = engine->scriptFunctions[funcId];
if( f->name == "opAssign" && f->parameterTypes.GetLength() == 1 &&
f->parameterTypes[0].GetTypeInfo() == f->objectType &&
(f->inOutFlags[0] & asTM_INREF) )
{
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engine->scriptFunctions[objType->beh.copy]->ReleaseInternal();
objType->beh.copy = funcId;
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f->AddRefInternal();
}
objType->methods.PushLast(funcId);
}
}
// We need to delete the node already if this is an interface method
if( isInterface && node )
node->Destroy(engine);
return 0;
}
int asCBuilder::RegisterVirtualProperty(asCScriptNode *node, asCScriptCode *file, asCObjectType *objType, bool isInterface, bool isGlobalFunction, asSNameSpace *ns, bool isExistingShared)
{
if( engine->ep.propertyAccessorMode != 2 )
{
WriteError(TXT_PROPERTY_ACCESSOR_DISABLED, file, node);
node->Destroy(engine);
return 0;
}
asASSERT( (objType && ns == 0) || isGlobalFunction );
if( ns == 0 )
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{
if( objType )
ns = objType->nameSpace;
else
ns = engine->nameSpaces[0];
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}
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bool isPrivate = false, isProtected = false;
asCString emulatedName;
asCDataType emulatedType;
asCScriptNode *mainNode = node;
node = node->firstChild;
if( !isGlobalFunction && node->tokenType == ttPrivate )
{
isPrivate = true;
node = node->next;
}
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else if( !isGlobalFunction && node->tokenType == ttProtected )
{
isProtected = true;
node = node->next;
}
emulatedType = CreateDataTypeFromNode(node, file, ns);
emulatedType = ModifyDataTypeFromNode(emulatedType, node->next, file, 0, 0);
node = node->next->next;
emulatedName.Assign(&file->code[node->tokenPos], node->tokenLength);
if( node->next == 0 )
WriteError(TXT_PROPERTY_WITHOUT_ACCESSOR, file, node);
node = node->next;
while (node)
{
asCScriptNode *next = node->next;
asCScriptNode *funcNode = 0;
bool success = false;
asSFunctionTraits funcTraits;
asCDataType returnType;
asCArray<asCString> paramNames;
asCArray<asCDataType> paramTypes;
asCArray<asETypeModifiers> paramModifiers;
asCArray<asCString*> defaultArgs;
asCString name;
funcTraits.SetTrait(asTRAIT_PRIVATE, isPrivate);
funcTraits.SetTrait(asTRAIT_PROTECTED, isProtected);
// TODO: getset: Allow private for individual property accessors
// TODO: getset: If the accessor uses its own name, then the property should be automatically declared
if (node->firstChild->nodeType == snIdentifier && file->TokenEquals(node->firstChild->tokenPos, node->firstChild->tokenLength, GET_TOKEN))
name = "get_";
else if (node->firstChild->nodeType == snIdentifier && file->TokenEquals(node->firstChild->tokenPos, node->firstChild->tokenLength, SET_TOKEN))
name = "set_";
else
WriteError(TXT_UNRECOGNIZED_VIRTUAL_PROPERTY_NODE, file, node);
if (name != "")
{
success = true;
funcNode = node->firstChild->next;
if (funcNode && funcNode->tokenType == ttConst)
{
funcTraits.SetTrait(asTRAIT_CONST, true);
funcNode = funcNode->next;
}
while (funcNode && funcNode->nodeType != snStatementBlock)
{
if (funcNode->tokenType == ttIdentifier && file->TokenEquals(funcNode->tokenPos, funcNode->tokenLength, FINAL_TOKEN))
funcTraits.SetTrait(asTRAIT_FINAL, true);
else if (funcNode->tokenType == ttIdentifier && file->TokenEquals(funcNode->tokenPos, funcNode->tokenLength, OVERRIDE_TOKEN))
funcTraits.SetTrait(asTRAIT_OVERRIDE, true);
funcNode = funcNode->next;
}
if (funcNode)
funcNode->DisconnectParent();
if (funcNode == 0 && (objType == 0 || !objType->IsInterface()))
{
// TODO: getset: If no implementation is supplied the builder should provide an automatically generated implementation
// The compiler needs to be able to handle the different types, primitive, value type, and handle
// The code is also different for global property accessors
WriteError(TXT_PROPERTY_ACCESSOR_MUST_BE_IMPLEMENTED, file, node);
}
if (name == "get_")
{
// Setup the signature for the get accessor method
returnType = emulatedType;
name = "get_" + emulatedName;
}
else if (name == "set_")
{
// Setup the signature for the set accessor method
returnType = asCDataType::CreatePrimitive(ttVoid, false);
paramModifiers.PushLast(asTM_NONE);
paramNames.PushLast("value");
paramTypes.PushLast(emulatedType);
defaultArgs.PushLast(0);
name = "set_" + emulatedName;
}
}
if( success )
{
if( !isExistingShared )
RegisterScriptFunction(funcNode, file, objType, isInterface, isGlobalFunction, ns, false, false, name, returnType, paramNames, paramTypes, paramModifiers, defaultArgs, funcTraits);
else
{
// Free the funcNode as it won't be used
if( funcNode ) funcNode->Destroy(engine);
// Should validate that the function really exists in the class/interface
bool found = false;
for( asUINT n = 0; n < objType->methods.GetLength(); n++ )
{
asCScriptFunction *func = engine->scriptFunctions[objType->methods[n]];
if( func->name == name &&
func->IsSignatureExceptNameEqual(returnType, paramTypes, paramModifiers, objType, funcTraits.GetTrait(asTRAIT_CONST)) )
{
found = true;
break;
}
}
if( !found )
{
asCString str;
str.Format(TXT_SHARED_s_DOESNT_MATCH_ORIGINAL, objType->GetName());
WriteError(str, file, node);
}
}
}
node = next;
};
mainNode->Destroy(engine);
return 0;
}
int asCBuilder::RegisterImportedFunction(int importID, asCScriptNode *node, asCScriptCode *file, asSNameSpace *ns)
{
asCString name;
asCDataType returnType;
asCArray<asCString> parameterNames;
asCArray<asCDataType> parameterTypes;
asCArray<asETypeModifiers> inOutFlags;
asCArray<asCString *> defaultArgs;
asSFunctionTraits funcTraits;
if( ns == 0 )
ns = engine->nameSpaces[0];
GetParsedFunctionDetails(node->firstChild, file, 0, name, returnType, parameterNames, parameterTypes, inOutFlags, defaultArgs, funcTraits, ns);
CheckNameConflict(name.AddressOf(), node, file, ns);
// Check that the same function hasn't been registered already in the namespace
asCArray<int> funcs;
GetFunctionDescriptions(name.AddressOf(), funcs, ns);
for( asUINT n = 0; n < funcs.GetLength(); ++n )
{
asCScriptFunction *func = GetFunctionDescription(funcs[n]);
if( func->IsSignatureExceptNameAndReturnTypeEqual(parameterTypes, inOutFlags, 0, false) )
{
WriteError(TXT_FUNCTION_ALREADY_EXIST, file, node);
break;
}
}
// Read the module name as well
asCScriptNode *nd = node->lastChild;
asASSERT( nd->nodeType == snConstant && nd->tokenType == ttStringConstant );
asCString moduleName;
moduleName.Assign(&file->code[nd->tokenPos+1], nd->tokenLength-2);
node->Destroy(engine);
// Register the function
module->AddImportedFunction(importID, name, returnType, parameterTypes, inOutFlags, defaultArgs, ns, moduleName);
return 0;
}
asCScriptFunction *asCBuilder::GetFunctionDescription(int id)
{
// TODO: import: This should be improved when the imported functions are removed
// Get the description from the engine
if( (id & FUNC_IMPORTED) == 0 )
return engine->scriptFunctions[id];
else
return engine->importedFunctions[id & ~FUNC_IMPORTED]->importedFunctionSignature;
}
void asCBuilder::GetFunctionDescriptions(const char *name, asCArray<int> &funcs, asSNameSpace *ns)
{
asUINT n;
// Get the script declared global functions
const asCArray<unsigned int> &idxs = module->globalFunctions.GetIndexes(ns, name);
for( n = 0; n < idxs.GetLength(); n++ )
{
const asCScriptFunction *f = module->globalFunctions.Get(idxs[n]);
asASSERT( f->objectType == 0 );
funcs.PushLast(f->id);
}
// Add the imported functions
// TODO: optimize: Linear search: This is probably not that critial. Also bindInformation will probably be removed in near future
for( n = 0; n < module->bindInformations.GetLength(); n++ )
{
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if( module->bindInformations[n]->importedFunctionSignature->name == name &&
module->bindInformations[n]->importedFunctionSignature->nameSpace == ns )
funcs.PushLast(module->bindInformations[n]->importedFunctionSignature->id);
}
// Add the registered global functions
const asCArray<unsigned int> &idxs2 = engine->registeredGlobalFuncs.GetIndexes(ns, name);
for( n = 0; n < idxs2.GetLength(); n++ )
{
asCScriptFunction *f = engine->registeredGlobalFuncs.Get(idxs2[n]);
// Verify if the module has access to the function
if( module->accessMask & f->accessMask )
{
funcs.PushLast(f->id);
}
}
}
// scope is only informed when looking for a base class' method
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void asCBuilder::GetObjectMethodDescriptions(const char *name, asCObjectType *objectType, asCArray<int> &methods, bool objIsConst, const asCString &scope, asCScriptNode *errNode, asCScriptCode *script)
{
asASSERT(objectType);
if( scope != "" )
{
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// If searching with a scope informed, then the node and script must also be informed for potential error reporting
asASSERT( errNode && script );
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// If the scope contains ::identifier, then use the last identifier as the class name and the rest of it as the namespace
// TODO: child funcdef: A scope can include a template type, e.g. array<ns::type>
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int n = scope.FindLast("::");
asCString className = n >= 0 ? scope.SubString(n+2) : scope;
asCString nsName = n >= 0 ? scope.SubString(0, n) : "";
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// If a namespace was specifically defined, then this must be used
asSNameSpace *ns = 0;
if (n >= 0)
{
if (nsName == "")
ns = engine->nameSpaces[0];
else
ns = GetNameSpaceByString(nsName, objectType->nameSpace, errNode, script, 0, false);
// If the namespace isn't found return silently and let the calling
// function report the error if it cannot resolve the symbol
if (ns == 0)
return;
}
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// Find the base class with the specified scope
while (objectType)
{
// If the name and namespace matches it is the correct class. If no
// specific namespace was given, then don't compare the namespace
if (objectType->name == className && (ns == 0 || objectType->nameSpace == ns))
break;
objectType = objectType->derivedFrom;
}
// If the scope is not any of the base classes, then return no methods
if( objectType == 0 )
return;
}
// Find the methods in the object that match the name
// TODO: optimize: Improve linear search
for( asUINT n = 0; n < objectType->methods.GetLength(); n++ )
{
asCScriptFunction *func = engine->scriptFunctions[objectType->methods[n]];
if( func->name == name &&
(!objIsConst || func->IsReadOnly()) &&
(func->accessMask & module->accessMask) )
{
// When the scope is defined the returned methods should be the true methods, not the virtual method stubs
if( scope == "" )
methods.PushLast(engine->scriptFunctions[objectType->methods[n]]->id);
else
{
asCScriptFunction *virtFunc = engine->scriptFunctions[objectType->methods[n]];
asCScriptFunction *realFunc = objectType->virtualFunctionTable[virtFunc->vfTableIdx];
methods.PushLast(realFunc->id);
}
}
}
}
#endif
void asCBuilder::WriteInfo(const asCString &scriptname, const asCString &message, int r, int c, bool pre)
{
// Need to store the pre message in a structure
if( pre )
{
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engine->preMessage.isSet = true;
engine->preMessage.c = c;
engine->preMessage.r = r;
engine->preMessage.message = message;
engine->preMessage.scriptname = scriptname;
}
else
{
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engine->preMessage.isSet = false;
if( !silent )
engine->WriteMessage(scriptname.AddressOf(), r, c, asMSGTYPE_INFORMATION, message.AddressOf());
}
}
void asCBuilder::WriteInfo(const asCString &message, asCScriptCode *file, asCScriptNode *node)
{
int r = 0, c = 0;
if( node )
file->ConvertPosToRowCol(node->tokenPos, &r, &c);
WriteInfo(file->name, message, r, c, false);
}
void asCBuilder::WriteError(const asCString &message, asCScriptCode *file, asCScriptNode *node)
{
int r = 0, c = 0;
if( node && file )
file->ConvertPosToRowCol(node->tokenPos, &r, &c);
WriteError(file ? file->name : asCString(""), message, r, c);
}
void asCBuilder::WriteError(const asCString &scriptname, const asCString &message, int r, int c)
{
numErrors++;
if( !silent )
engine->WriteMessage(scriptname.AddressOf(), r, c, asMSGTYPE_ERROR, message.AddressOf());
}
void asCBuilder::WriteWarning(const asCString &scriptname, const asCString &message, int r, int c)
{
if( engine->ep.compilerWarnings )
{
numWarnings++;
if( !silent )
engine->WriteMessage(scriptname.AddressOf(), r, c, asMSGTYPE_WARNING, message.AddressOf());
}
}
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void asCBuilder::WriteWarning(const asCString &message, asCScriptCode *file, asCScriptNode *node)
{
int r = 0, c = 0;
if( node && file )
file->ConvertPosToRowCol(node->tokenPos, &r, &c);
WriteWarning(file ? file->name : asCString(""), message, r, c);
}
// TODO: child funcdef: Should try to eliminate this function. GetNameSpaceFromNode is more complete
asCString asCBuilder::GetScopeFromNode(asCScriptNode *node, asCScriptCode *script, asCScriptNode **next)
{
if (node->nodeType != snScope)
{
if (next)
*next = node;
return "";
}
asCString scope;
asCScriptNode *sn = node->firstChild;
if( sn->tokenType == ttScope )
{
scope = "::";
sn = sn->next;
}
// TODO: child funcdef: A scope can have a template type as the innermost
while( sn && sn->next && sn->next->tokenType == ttScope )
{
asCString tmp;
tmp.Assign(&script->code[sn->tokenPos], sn->tokenLength);
if( scope != "" && scope != "::" )
scope += "::";
scope += tmp;
sn = sn->next->next;
}
if( next )
*next = node->next;
return scope;
}
asSNameSpace *asCBuilder::GetNameSpaceFromNode(asCScriptNode *node, asCScriptCode *script, asSNameSpace *implicitNs, asCScriptNode **next, asCObjectType **objType)
{
if (objType)
*objType = 0;
// If no scope has been informed, then return the implicit namespace
if (node->nodeType != snScope)
{
if (next)
*next = node;
return implicitNs ? implicitNs : engine->nameSpaces[0];
}
if (next)
*next = node->next;
asCString scope;
asCScriptNode *sn = node->firstChild;
if (sn && sn->tokenType == ttScope)
{
scope = "::";
sn = sn->next;
}
while (sn)
{
if (sn->next->tokenType == ttScope)
{
asCString tmp;
tmp.Assign(&script->code[sn->tokenPos], sn->tokenLength);
if (scope != "" && scope != "::")
scope += "::";
scope += tmp;
sn = sn->next->next;
}
else
{
// This is a template type
asASSERT(sn->next->nodeType == snDataType);
asSNameSpace *ns = implicitNs;
if (scope != "")
ns = engine->FindNameSpace(scope.AddressOf());
asCString templateName(&script->code[sn->tokenPos], sn->tokenLength);
asCObjectType *templateType = GetObjectType(templateName.AddressOf(), ns);
if (templateType == 0 || (templateType->flags & asOBJ_TEMPLATE) == 0)
{
// TODO: child funcdef: Report error
return ns;
}
if (objType)
*objType = GetTemplateInstanceFromNode(sn, script, templateType, implicitNs, 0);
// Return no namespace, since this is an object type
return 0;
}
}
asCTypeInfo *ti = 0;
asSNameSpace *ns = GetNameSpaceByString(scope, implicitNs ? implicitNs : engine->nameSpaces[0], node, script, &ti);
if (ti && objType)
*objType = CastToObjectType(ti);
return ns;
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}
asSNameSpace *asCBuilder::GetNameSpaceByString(const asCString &nsName, asSNameSpace *implicitNs, asCScriptNode *errNode, asCScriptCode *script, asCTypeInfo **scopeType, bool isRequired)
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{
if( scopeType )
*scopeType = 0;
asSNameSpace *ns = implicitNs;
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if( nsName == "::" )
ns = engine->nameSpaces[0];
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else if( nsName != "" )
{
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ns = engine->FindNameSpace(nsName.AddressOf());
if (ns == 0 && scopeType)
{
asCString typeName;
asCString searchNs;
// Split the scope with at the inner most ::
int pos = nsName.FindLast("::");
bool recursive = false;
if (pos >= 0)
{
// Fully qualified namespace
typeName = nsName.SubString(pos + 2);
searchNs = nsName.SubString(0, pos);
}
else
{
// Partially qualified, use the implicit namespace and then search recursively for the type
typeName = nsName;
searchNs = implicitNs->name;
recursive = true;
}
asSNameSpace *nsTmp = searchNs == "::" ? engine->nameSpaces[0] : engine->FindNameSpace(searchNs.AddressOf());
asCTypeInfo *ti = 0;
while( !ti && nsTmp )
{
// Check if the typeName is an existing type in the namespace
ti = GetType(typeName.AddressOf(), nsTmp, 0);
if (ti)
{
// The informed scope is not a namespace, but it does match a type
*scopeType = ti;
return 0;
}
nsTmp = recursive ? engine->GetParentNameSpace(nsTmp) : 0;
}
}
if (ns == 0 && isRequired)
{
asCString msg;
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msg.Format(TXT_NAMESPACE_s_DOESNT_EXIST, nsName.AddressOf());
WriteError(msg, script, errNode);
}
}
return ns;
}
asCDataType asCBuilder::CreateDataTypeFromNode(asCScriptNode *node, asCScriptCode *file, asSNameSpace *implicitNamespace, bool acceptHandleForScope, asCObjectType *currentType, bool reportError, bool *isValid)
{
asASSERT(node->nodeType == snDataType || node->nodeType == snIdentifier || node->nodeType == snScope );
asCDataType dt;
asCScriptNode *n = node->firstChild;
if (isValid)
*isValid = true;
// If the informed node is an identifier or scope, then the
// datatype should be identified directly from that
if (node->nodeType != snDataType)
n = node;
bool isConst = false;
bool isImplicitHandle = false;
if( n->tokenType == ttConst )
{
isConst = true;
n = n->next;
}
// Determine namespace (or parent type) to search for the data type in
asCObjectType *parentType = 0;
asSNameSpace *ns = GetNameSpaceFromNode(n, file, implicitNamespace, &n, &parentType);
if( ns == 0 && parentType == 0 )
{
// The namespace and parent type doesn't exist. Return a dummy type instead.
dt = asCDataType::CreatePrimitive(ttInt, false);
if (isValid)
*isValid = false;
return dt;
}
if( n->tokenType == ttIdentifier )
{
bool found = false;
asCString str;
str.Assign(&file->code[n->tokenPos], n->tokenLength);
// Recursively search parent namespaces for matching type
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asSNameSpace *origNs = ns;
asCObjectType *origParentType = parentType;
while( (ns || parentType) && !found )
{
asCTypeInfo *ti = 0;
if (currentType)
{
// If this is for a template type, then we must first determine if the
// identifier matches any of the template subtypes
if (currentType->flags & asOBJ_TEMPLATE)
{
for (asUINT subtypeIndex = 0; subtypeIndex < currentType->templateSubTypes.GetLength(); subtypeIndex++)
{
asCTypeInfo *type = currentType->templateSubTypes[subtypeIndex].GetTypeInfo();
if (type && str == type->name)
{
ti = type;
break;
}
}
}
if (ti == 0)
{
// Check if the type is a child type of the current type
ti = GetFuncDef(str.AddressOf(), 0, currentType);
if (ti)
{
dt = asCDataType::CreateType(ti, false);
found = true;
}
}
}
if( ti == 0 )
ti = GetType(str.AddressOf(), ns, parentType);
if( ti == 0 && !module && currentType )
ti = GetTypeFromTypesKnownByObject(str.AddressOf(), currentType);
if( ti && !found )
{
found = true;
if( ti->flags & asOBJ_IMPLICIT_HANDLE )
isImplicitHandle = true;
// Make sure the module has access to the object type
if( !module || (module->accessMask & ti->accessMask) )
{
if( asOBJ_TYPEDEF == (ti->flags & asOBJ_TYPEDEF) )
{
// TODO: typedef: A typedef should be considered different from the original type (though with implicit conversions between the two)
// Create primitive data type based on object flags
dt = CastToTypedefType(ti)->aliasForType;
dt.MakeReadOnly(isConst);
}
else
{
if( ti->flags & asOBJ_TEMPLATE )
{
ti = GetTemplateInstanceFromNode(n, file, CastToObjectType(ti), implicitNamespace, currentType, &n);
if (ti == 0)
{
if (isValid)
*isValid = false;
// Return a dummy
return asCDataType::CreatePrimitive(ttInt, false);
}
}
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else if( n && n->next && n->next->nodeType == snDataType )
{
if (reportError)
{
asCString msg;
msg.Format(TXT_TYPE_s_NOT_TEMPLATE, ti->name.AddressOf());
WriteError(msg, file, n);
}
if (isValid)
*isValid = false;
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}
// Create object data type
if( ti )
dt = asCDataType::CreateType(ti, isConst);
else
dt = asCDataType::CreatePrimitive(ttInt, isConst);
}
}
else
{
if (reportError)
{
asCString msg;
msg.Format(TXT_TYPE_s_NOT_AVAILABLE_FOR_MODULE, (const char *)str.AddressOf());
WriteError(msg, file, n);
}
dt.SetTokenType(ttInt);
if (isValid)
*isValid = false;
}
}
if( !found )
{
// Try to find it in the parent namespace
if( ns )
ns = engine->GetParentNameSpace(ns);
if (parentType)
parentType = 0;
}
}
if( !found )
{
if (reportError)
{
asCString msg;
if (origNs && origNs->name == "")
msg.Format(TXT_IDENTIFIER_s_NOT_DATA_TYPE_IN_GLOBAL_NS, str.AddressOf());
else if (origNs)
msg.Format(TXT_IDENTIFIER_s_NOT_DATA_TYPE_IN_NS_s, str.AddressOf(), origNs->name.AddressOf());
else
{
// TODO: child funcdef: Message should explain that the identifier is not a type of the parent type
asCDataType pt = asCDataType::CreateType(origParentType, false);
msg.Format(TXT_IDENTIFIER_s_NOT_DATA_TYPE_IN_NS_s, str.AddressOf(), pt.Format(origParentType->nameSpace, false).AddressOf());
}
WriteError(msg, file, n);
}
dt = asCDataType::CreatePrimitive(ttInt, isConst);
if (isValid)
*isValid = false;
return dt;
}
}
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else if( n->tokenType == ttAuto )
{
dt = asCDataType::CreateAuto(isConst);
}
else
{
// Create primitive data type
dt = asCDataType::CreatePrimitive(n->tokenType, isConst);
}
// Determine array dimensions and object handles
n = n->next;
while( n && (n->tokenType == ttOpenBracket || n->tokenType == ttHandle) )
{
if( n->tokenType == ttOpenBracket )
{
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// Make sure the sub type can be instantiated
if( !dt.CanBeInstantiated() )
{
if (reportError)
{
asCString str;
if (dt.IsAbstractClass())
str.Format(TXT_ABSTRACT_CLASS_s_CANNOT_BE_INSTANTIATED, dt.Format(ns).AddressOf());
else if (dt.IsInterface())
str.Format(TXT_INTERFACE_s_CANNOT_BE_INSTANTIATED, dt.Format(ns).AddressOf());
else
// TODO: Improve error message to explain why
str.Format(TXT_DATA_TYPE_CANT_BE_s, dt.Format(ns).AddressOf());
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WriteError(str, file, n);
}
if (isValid)
*isValid = false;
}
// Make the type an array (or multidimensional array)
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if( dt.MakeArray(engine, module) < 0 )
{
if( reportError )
WriteError(TXT_NO_DEFAULT_ARRAY_TYPE, file, n);
if (isValid)
*isValid = false;
break;
}
}
else
{
// Make the type a handle
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if( dt.IsObjectHandle() )
{
if( reportError )
WriteError(TXT_HANDLE_OF_HANDLE_IS_NOT_ALLOWED, file, n);
if (isValid)
*isValid = false;
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break;
}
else if( dt.MakeHandle(true, acceptHandleForScope) < 0 )
{
if( reportError )
WriteError(TXT_OBJECT_HANDLE_NOT_SUPPORTED, file, n);
if (isValid)
*isValid = false;
break;
}
}
n = n->next;
}
if( isImplicitHandle )
{
// Make the type a handle
if (dt.MakeHandle(true, acceptHandleForScope) < 0)
{
if( reportError )
WriteError(TXT_OBJECT_HANDLE_NOT_SUPPORTED, file, n);
if (isValid)
*isValid = false;
}
}
return dt;
}
asCObjectType *asCBuilder::GetTemplateInstanceFromNode(asCScriptNode *node, asCScriptCode *file, asCObjectType *templateType, asSNameSpace *implicitNamespace, asCObjectType *currentType, asCScriptNode **next)
{
// Check if the subtype is a type or the template's subtype
// if it is the template's subtype then this is the actual template type,
// orderwise it is a template instance.
// Only do this for application registered interface, as the
// scripts cannot implement templates.
asCArray<asCDataType> subTypes;
asUINT subtypeIndex;
asCScriptNode *n = node;
while (n && n->next && n->next->nodeType == snDataType)
{
n = n->next;
// When parsing function definitions for template registrations (currentType != 0) it is necessary
// to pass in the current template type to the recursive call since it is this ones sub-template types
// that should be allowed.
asCDataType subType = CreateDataTypeFromNode(n, file, implicitNamespace, false, module ? 0 : (currentType ? currentType : templateType));
subTypes.PushLast(subType);
if (subType.IsReadOnly())
{
asCString msg;
msg.Format(TXT_TMPL_SUBTYPE_MUST_NOT_BE_READ_ONLY);
WriteError(msg, file, n);
// Return a dummy
return 0;
}
}
if (next)
*next = n;
if (subTypes.GetLength() != templateType->templateSubTypes.GetLength())
{
asCString msg;
msg.Format(TXT_TMPL_s_EXPECTS_d_SUBTYPES, templateType->name.AddressOf(), int(templateType->templateSubTypes.GetLength()));
WriteError(msg, file, node);
// Return a dummy
return 0;
}
// Check if any of the given subtypes are different from the template's declared subtypes
bool isDifferent = false;
for (subtypeIndex = 0; subtypeIndex < subTypes.GetLength(); subtypeIndex++)
{
if (subTypes[subtypeIndex].GetTypeInfo() != templateType->templateSubTypes[subtypeIndex].GetTypeInfo())
{
isDifferent = true;
break;
}
}
if (isDifferent)
{
// This is a template instance
// Need to find the correct object type
asCObjectType *otInstance = engine->GetTemplateInstanceType(templateType, subTypes, module);
if (otInstance && otInstance->scriptSectionIdx < 0)
{
// If this is the first time the template instance is used, store where it was declared from
otInstance->scriptSectionIdx = engine->GetScriptSectionNameIndex(file->name.AddressOf());
int row, column;
file->ConvertPosToRowCol(n->tokenPos, &row, &column);
otInstance->declaredAt = (row & 0xFFFFF) | (column << 20);
}
if (!otInstance)
{
asCString sub = subTypes[0].Format(templateType->nameSpace);
for (asUINT s = 1; s < subTypes.GetLength(); s++)
{
sub += ",";
sub += subTypes[s].Format(templateType->nameSpace);
}
asCString msg;
msg.Format(TXT_INSTANCING_INVLD_TMPL_TYPE_s_s, templateType->name.AddressOf(), sub.AddressOf());
WriteError(msg, file, n);
}
return otInstance;
}
return templateType;
}
asCDataType asCBuilder::ModifyDataTypeFromNode(const asCDataType &type, asCScriptNode *node, asCScriptCode *file, asETypeModifiers *inOutFlags, bool *autoHandle)
{
asCDataType dt = type;
if( inOutFlags ) *inOutFlags = asTM_NONE;
// Is the argument sent by reference?
asCScriptNode *n = node->firstChild;
if( n && n->tokenType == ttAmp )
{
if (dt.GetTokenType() == ttVoid)
{
asCString msg;
msg.Format(TXT_TYPE_s_CANNOT_BE_REFERENCE, type.Format(0).AddressOf());
WriteError(msg, file, node->firstChild);
return dt;
}
dt.MakeReference(true);
n = n->next;
if( n )
{
if( inOutFlags )
{
if( n->tokenType == ttIn )
*inOutFlags = asTM_INREF;
else if( n->tokenType == ttOut )
*inOutFlags = asTM_OUTREF;
else if( n->tokenType == ttInOut )
*inOutFlags = asTM_INOUTREF;
else
asASSERT(false);
}
n = n->next;
}
else
{
if( inOutFlags )
*inOutFlags = asTM_INOUTREF; // ttInOut
}
if( !engine->ep.allowUnsafeReferences &&
inOutFlags && *inOutFlags == asTM_INOUTREF )
{
// Verify that the base type support &inout parameter types
if( !dt.IsObject() || dt.IsObjectHandle() || !((dt.GetTypeInfo()->flags & asOBJ_NOCOUNT) || (CastToObjectType(dt.GetTypeInfo())->beh.addref && CastToObjectType(dt.GetTypeInfo())->beh.release)) )
WriteError(TXT_ONLY_OBJECTS_MAY_USE_REF_INOUT, file, node->firstChild);
}
}
if( autoHandle ) *autoHandle = false;
if( n && n->tokenType == ttPlus )
{
// Autohandles are not supported for types with NOCOUNT
// If the type is not a handle then there was an error with building the type, but
// this error would already have been reported so no need to report another error here
if( dt.IsObjectHandle() && (dt.GetTypeInfo()->flags & asOBJ_NOCOUNT) )
WriteError(TXT_AUTOHANDLE_CANNOT_BE_USED_FOR_NOCOUNT, file, node->firstChild);
if( autoHandle ) *autoHandle = true;
}
if (n && n->tokenType == ttIdentifier)
{
asCString str;
str.Assign(&file->code[n->tokenPos], n->tokenLength);
if (str == IF_HANDLE_TOKEN)
dt.SetIfHandleThenConst(true);
else
{
// TODO: Should give error if not currently parsing template registration
asCString msg;
msg.Format(TXT_UNEXPECTED_TOKEN_s, str.AddressOf());
WriteError(msg, file, node->firstChild);
}
}
return dt;
}
asCTypeInfo *asCBuilder::GetType(const char *type, asSNameSpace *ns, asCObjectType *parentType)
{
asASSERT((ns == 0 && parentType) || (ns && parentType == 0));
if (ns)
{
asCTypeInfo *ti = engine->GetRegisteredType(type, ns);
if (!ti && module)
ti = module->GetType(type, ns);
return ti;
}
else
{
// Recursively check base classes
asCObjectType *currType = parentType;
while (currType)
{
for (asUINT n = 0; n < currType->childFuncDefs.GetLength(); n++)
{
asCFuncdefType *funcDef = currType->childFuncDefs[n];
if (funcDef && funcDef->name == type)
return funcDef;
}
currType = currType->derivedFrom;
}
}
return 0;
}
asCObjectType *asCBuilder::GetObjectType(const char *type, asSNameSpace *ns)
{
return CastToObjectType(GetType(type, ns, 0));
}
#ifndef AS_NO_COMPILER
// This function will return true if there are any types in the engine or module
// with the given name. The namespace is ignored in this verification.
bool asCBuilder::DoesTypeExist(const asCString &type)
{
asUINT n;
// This function is only used when parsing expressions for building bytecode
// and this is only done after all types are known. For this reason the types
// can be safely cached in a map for quick lookup. Once the builder is released
// the cache will also be destroyed thus avoiding unnecessary memory consumption.
if( !hasCachedKnownTypes )
{
// Only do this once
hasCachedKnownTypes = true;
// Add registered types
asSMapNode<asSNameSpaceNamePair, asCTypeInfo*> *cursor;
engine->allRegisteredTypes.MoveFirst(&cursor);
while( cursor )
{
if( !knownTypes.MoveTo(0, cursor->key.name) )
knownTypes.Insert(cursor->key.name, true);
engine->allRegisteredTypes.MoveNext(&cursor, cursor);
}
if (module)
{
// Add script classes and interfaces
for (n = 0; n < module->classTypes.GetLength(); n++)
if (!knownTypes.MoveTo(0, module->classTypes[n]->name))
knownTypes.Insert(module->classTypes[n]->name, true);
// Add script enums
for (n = 0; n < module->enumTypes.GetLength(); n++)
if (!knownTypes.MoveTo(0, module->enumTypes[n]->name))
knownTypes.Insert(module->enumTypes[n]->name, true);
// Add script typedefs
for (n = 0; n < module->typeDefs.GetLength(); n++)
if (!knownTypes.MoveTo(0, module->typeDefs[n]->name))
knownTypes.Insert(module->typeDefs[n]->name, true);
// Add script funcdefs
for (n = 0; n < module->funcDefs.GetLength(); n++)
if (!knownTypes.MoveTo(0, module->funcDefs[n]->name))
knownTypes.Insert(module->funcDefs[n]->name, true);
}
}
// Check if the type is known
return knownTypes.MoveTo(0, type);
}
#endif
asCTypeInfo *asCBuilder::GetTypeFromTypesKnownByObject(const char *type, asCObjectType *currentType)
{
if (currentType->name == type)
return currentType;
asUINT n;
asCTypeInfo *found = 0;
for (n = 0; found == 0 && n < currentType->properties.GetLength(); n++)
if (currentType->properties[n]->type.GetTypeInfo() &&
currentType->properties[n]->type.GetTypeInfo()->name == type)
found = currentType->properties[n]->type.GetTypeInfo();
for (n = 0; found == 0 && n < currentType->methods.GetLength(); n++)
{
asCScriptFunction *func = engine->scriptFunctions[currentType->methods[n]];
if (func->returnType.GetTypeInfo() &&
func->returnType.GetTypeInfo()->name == type)
found = func->returnType.GetTypeInfo();
for (asUINT f = 0; found == 0 && f < func->parameterTypes.GetLength(); f++)
if (func->parameterTypes[f].GetTypeInfo() &&
func->parameterTypes[f].GetTypeInfo()->name == type)
found = func->parameterTypes[f].GetTypeInfo();
}
if (found)
{
// In case we find a template instance it mustn't be returned
// because it is not known if the subtype is really matching
if (found->flags & asOBJ_TEMPLATE)
return 0;
}
return found;
}
asCFuncdefType *asCBuilder::GetFuncDef(const char *type, asSNameSpace *ns, asCObjectType *parentType)
{
asASSERT((ns == 0 && parentType) || (ns && parentType == 0));
if (ns)
{
for (asUINT n = 0; n < engine->registeredFuncDefs.GetLength(); n++)
{
asCFuncdefType *funcDef = engine->registeredFuncDefs[n];
// TODO: access: Only return the definitions that the module has access to
if (funcDef && funcDef->nameSpace == ns && funcDef->name == type)
return funcDef;
}
if (module)
{
for (asUINT n = 0; n < module->funcDefs.GetLength(); n++)
{
asCFuncdefType *funcDef = module->funcDefs[n];
if (funcDef && funcDef->nameSpace == ns && funcDef->name == type)
return funcDef;
}
}
}
else
{
// Recursively check base classes
asCObjectType *currType = parentType;
while (currType)
{
for (asUINT n = 0; n < currType->childFuncDefs.GetLength(); n++)
{
asCFuncdefType *funcDef = currType->childFuncDefs[n];
if (funcDef && funcDef->name == type)
return funcDef;
}
currType = currType->derivedFrom;
}
}
return 0;
}
#ifndef AS_NO_COMPILER
int asCBuilder::GetEnumValueFromType(asCEnumType *type, const char *name, asCDataType &outDt, asDWORD &outValue)
{
if( !type || !(type->flags & asOBJ_ENUM) )
return 0;
for( asUINT n = 0; n < type->enumValues.GetLength(); ++n )
{
if( type->enumValues[n]->name == name )
{
outDt = asCDataType::CreateType(type, true);
outValue = type->enumValues[n]->value;
return 1;
}
}
return 0;
}
int asCBuilder::GetEnumValue(const char *name, asCDataType &outDt, asDWORD &outValue, asSNameSpace *ns)
{
bool found = false;
// Search all available enum types
asUINT t;
for( t = 0; t < engine->registeredEnums.GetLength(); t++ )
{
asCEnumType *et = engine->registeredEnums[t];
if( ns != et->nameSpace ) continue;
// Don't bother with types the module doesn't have access to
if( (et->accessMask & module->accessMask) == 0 )
continue;
if( GetEnumValueFromType(et, name, outDt, outValue) )
{
if( !found )
found = true;
else
{
// Found more than one value in different enum types
return 2;
}
}
}
for( t = 0; t < module->enumTypes.GetLength(); t++ )
{
asCEnumType *et = module->enumTypes[t];
if( ns != et->nameSpace ) continue;
if( GetEnumValueFromType(et, name, outDt, outValue) )
{
if( !found )
found = true;
else
{
// Found more than one value in different enum types
return 2;
}
}
}
if( found )
return 1;
// Didn't find any value
return 0;
}
#endif // AS_NO_COMPILER
END_AS_NAMESPACE