예제 #1
0
/// \brief Add a lambda's conversion to block pointer.
static void addBlockPointerConversion(Sema &S, 
                                      SourceRange IntroducerRange,
                                      CXXRecordDecl *Class,
                                      CXXMethodDecl *CallOperator) {
  const FunctionProtoType *Proto
    = CallOperator->getType()->getAs<FunctionProtoType>(); 
  QualType BlockPtrTy;
  {
    FunctionProtoType::ExtProtoInfo ExtInfo = Proto->getExtProtoInfo();
    ExtInfo.TypeQuals = 0;
    QualType FunctionTy
      = S.Context.getFunctionType(Proto->getResultType(),
                                  ArrayRef<QualType>(Proto->arg_type_begin(),
                                                     Proto->getNumArgs()),
                                  ExtInfo);
    BlockPtrTy = S.Context.getBlockPointerType(FunctionTy);
  }
  
  FunctionProtoType::ExtProtoInfo ExtInfo;
  ExtInfo.TypeQuals = Qualifiers::Const;
  QualType ConvTy = S.Context.getFunctionType(BlockPtrTy, ArrayRef<QualType>(),
                                              ExtInfo);
  
  SourceLocation Loc = IntroducerRange.getBegin();
  DeclarationName Name
    = S.Context.DeclarationNames.getCXXConversionFunctionName(
        S.Context.getCanonicalType(BlockPtrTy));
  DeclarationNameLoc NameLoc;
  NameLoc.NamedType.TInfo = S.Context.getTrivialTypeSourceInfo(BlockPtrTy, Loc);
  CXXConversionDecl *Conversion 
    = CXXConversionDecl::Create(S.Context, Class, Loc, 
                                DeclarationNameInfo(Name, Loc, NameLoc),
                                ConvTy, 
                                S.Context.getTrivialTypeSourceInfo(ConvTy, Loc),
                                /*isInline=*/false, /*isExplicit=*/false,
                                /*isConstexpr=*/false, 
                                CallOperator->getBody()->getLocEnd());
  Conversion->setAccess(AS_public);
  Conversion->setImplicit(true);
  Class->addDecl(Conversion);
}
예제 #2
0
/// \brief Add a lambda's conversion to function pointer, as described in
/// C++11 [expr.prim.lambda]p6.
static void addFunctionPointerConversion(Sema &S, 
                                         SourceRange IntroducerRange,
                                         CXXRecordDecl *Class,
                                         CXXMethodDecl *CallOperator) {
  // Add the conversion to function pointer.
  const FunctionProtoType *Proto
    = CallOperator->getType()->getAs<FunctionProtoType>(); 
  QualType FunctionPtrTy;
  QualType FunctionTy;
  {
    FunctionProtoType::ExtProtoInfo ExtInfo = Proto->getExtProtoInfo();
    ExtInfo.TypeQuals = 0;
    FunctionTy = S.Context.getFunctionType(Proto->getResultType(),
                                           Proto->arg_type_begin(),
                                           Proto->getNumArgs(),
                                           ExtInfo);
    FunctionPtrTy = S.Context.getPointerType(FunctionTy);
  }
  
  FunctionProtoType::ExtProtoInfo ExtInfo;
  ExtInfo.TypeQuals = Qualifiers::Const;
  QualType ConvTy = S.Context.getFunctionType(FunctionPtrTy, 0, 0, ExtInfo);
  
  SourceLocation Loc = IntroducerRange.getBegin();
  DeclarationName Name
    = S.Context.DeclarationNames.getCXXConversionFunctionName(
        S.Context.getCanonicalType(FunctionPtrTy));
  DeclarationNameLoc NameLoc;
  NameLoc.NamedType.TInfo = S.Context.getTrivialTypeSourceInfo(FunctionPtrTy,
                                                               Loc);
  CXXConversionDecl *Conversion 
    = CXXConversionDecl::Create(S.Context, Class, Loc, 
                                DeclarationNameInfo(Name, Loc, NameLoc),
                                ConvTy, 
                                S.Context.getTrivialTypeSourceInfo(ConvTy, 
                                                                   Loc),
                                /*isInline=*/false, /*isExplicit=*/false,
                                /*isConstexpr=*/false, 
                                CallOperator->getBody()->getLocEnd());
  Conversion->setAccess(AS_public);
  Conversion->setImplicit(true);
  Class->addDecl(Conversion);
  
  // Add a non-static member function "__invoke" that will be the result of
  // the conversion.
  Name = &S.Context.Idents.get("__invoke");
  CXXMethodDecl *Invoke
    = CXXMethodDecl::Create(S.Context, Class, Loc, 
                            DeclarationNameInfo(Name, Loc), FunctionTy, 
                            CallOperator->getTypeSourceInfo(),
                            /*IsStatic=*/true, SC_Static, /*IsInline=*/true,
                            /*IsConstexpr=*/false, 
                            CallOperator->getBody()->getLocEnd());
  SmallVector<ParmVarDecl *, 4> InvokeParams;
  for (unsigned I = 0, N = CallOperator->getNumParams(); I != N; ++I) {
    ParmVarDecl *From = CallOperator->getParamDecl(I);
    InvokeParams.push_back(ParmVarDecl::Create(S.Context, Invoke,
                                               From->getLocStart(),
                                               From->getLocation(),
                                               From->getIdentifier(),
                                               From->getType(),
                                               From->getTypeSourceInfo(),
                                               From->getStorageClass(),
                                               From->getStorageClassAsWritten(),
                                               /*DefaultArg=*/0));
  }
  Invoke->setParams(InvokeParams);
  Invoke->setAccess(AS_private);
  Invoke->setImplicit(true);
  Class->addDecl(Invoke);
}