CXXMethodDecl *Sema::startLambdaDefinition(CXXRecordDecl *Class,
SourceRange IntroducerRange,
TypeSourceInfo *MethodType,
SourceLocation EndLoc,
llvm::ArrayRef<ParmVarDecl *> Params) {
// C++11 [expr.prim.lambda]p5:
// The closure type for a lambda-expression has a public inline function
// call operator (13.5.4) whose parameters and return type are described by
// the lambda-expression's parameter-declaration-clause and
// trailing-return-type respectively.
DeclarationName MethodName
= Context.DeclarationNames.getCXXOperatorName(OO_Call);
DeclarationNameLoc MethodNameLoc;
MethodNameLoc.CXXOperatorName.BeginOpNameLoc
= IntroducerRange.getBegin().getRawEncoding();
MethodNameLoc.CXXOperatorName.EndOpNameLoc
= IntroducerRange.getEnd().getRawEncoding();
CXXMethodDecl *Method
= CXXMethodDecl::Create(Context, Class, EndLoc,
DeclarationNameInfo(MethodName,
IntroducerRange.getBegin(),
MethodNameLoc),
MethodType->getType(), MethodType,
/*isStatic=*/false,
SC_None,
/*isInline=*/true,
/*isConstExpr=*/false,
EndLoc);
Method->setAccess(AS_public);
// Temporarily set the lexical declaration context to the current
// context, so that the Scope stack matches the lexical nesting.
Method->setLexicalDeclContext(CurContext);
// Add parameters.
if (!Params.empty()) {
Method->setParams(Params);
CheckParmsForFunctionDef(const_cast<ParmVarDecl **>(Params.begin()),
const_cast<ParmVarDecl **>(Params.end()),
/*CheckParameterNames=*/false);
for (CXXMethodDecl::param_iterator P = Method->param_begin(),
PEnd = Method->param_end();
P != PEnd; ++P)
(*P)->setOwningFunction(Method);
}
return Method;
}
CXXMethodDecl *Sema::startLambdaDefinition(CXXRecordDecl *Class,
SourceRange IntroducerRange,
TypeSourceInfo *MethodType,
SourceLocation EndLoc,
llvm::ArrayRef<ParmVarDecl *> Params) {
// C++11 [expr.prim.lambda]p5:
// The closure type for a lambda-expression has a public inline function
// call operator (13.5.4) whose parameters and return type are described by
// the lambda-expression's parameter-declaration-clause and
// trailing-return-type respectively.
DeclarationName MethodName
= Context.DeclarationNames.getCXXOperatorName(OO_Call);
DeclarationNameLoc MethodNameLoc;
MethodNameLoc.CXXOperatorName.BeginOpNameLoc
= IntroducerRange.getBegin().getRawEncoding();
MethodNameLoc.CXXOperatorName.EndOpNameLoc
= IntroducerRange.getEnd().getRawEncoding();
CXXMethodDecl *Method
= CXXMethodDecl::Create(Context, Class, EndLoc,
DeclarationNameInfo(MethodName,
IntroducerRange.getBegin(),
MethodNameLoc),
MethodType->getType(), MethodType,
/*isStatic=*/false,
SC_None,
/*isInline=*/true,
/*isConstExpr=*/false,
EndLoc);
Method->setAccess(AS_public);
// Temporarily set the lexical declaration context to the current
// context, so that the Scope stack matches the lexical nesting.
Method->setLexicalDeclContext(CurContext);
// Add parameters.
if (!Params.empty()) {
Method->setParams(Params);
CheckParmsForFunctionDef(const_cast<ParmVarDecl **>(Params.begin()),
const_cast<ParmVarDecl **>(Params.end()),
/*CheckParameterNames=*/false);
for (CXXMethodDecl::param_iterator P = Method->param_begin(),
PEnd = Method->param_end();
P != PEnd; ++P)
(*P)->setOwningFunction(Method);
}
// Allocate a mangling number for this lambda expression, if the ABI
// requires one.
Decl *ContextDecl = ExprEvalContexts.back().LambdaContextDecl;
enum ContextKind {
Normal,
DefaultArgument,
DataMember,
StaticDataMember
} Kind = Normal;
// Default arguments of member function parameters that appear in a class
// definition, as well as the initializers of data members, receive special
// treatment. Identify them.
if (ContextDecl) {
if (ParmVarDecl *Param = dyn_cast<ParmVarDecl>(ContextDecl)) {
if (const DeclContext *LexicalDC
= Param->getDeclContext()->getLexicalParent())
if (LexicalDC->isRecord())
Kind = DefaultArgument;
} else if (VarDecl *Var = dyn_cast<VarDecl>(ContextDecl)) {
if (Var->getDeclContext()->isRecord())
Kind = StaticDataMember;
} else if (isa<FieldDecl>(ContextDecl)) {
Kind = DataMember;
}
}
// Itanium ABI [5.1.7]:
// In the following contexts [...] the one-definition rule requires closure
// types in different translation units to "correspond":
bool IsInNonspecializedTemplate =
!ActiveTemplateInstantiations.empty() || CurContext->isDependentContext();
unsigned ManglingNumber;
switch (Kind) {
case Normal:
// -- the bodies of non-exported nonspecialized template functions
// -- the bodies of inline functions
if ((IsInNonspecializedTemplate &&
!(ContextDecl && isa<ParmVarDecl>(ContextDecl))) ||
isInInlineFunction(CurContext))
ManglingNumber = Context.getLambdaManglingNumber(Method);
else
ManglingNumber = 0;
// There is no special context for this lambda.
ContextDecl = 0;
break;
case StaticDataMember:
// -- the initializers of nonspecialized static members of template classes
if (!IsInNonspecializedTemplate) {
ManglingNumber = 0;
ContextDecl = 0;
break;
}
// Fall through to assign a mangling number.
case DataMember:
// -- the in-class initializers of class members
case DefaultArgument:
// -- default arguments appearing in class definitions
ManglingNumber = ExprEvalContexts.back().getLambdaMangleContext()
.getManglingNumber(Method);
break;
}
Class->setLambdaMangling(ManglingNumber, ContextDecl);
return Method;
}