src/llvm/tools/clang/lib/AST/LambdaMangleContext.cpp

   1 //===--- LambdaMangleContext.cpp - Context for mangling lambdas -*- C++ -*-===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 //
  10 //  This file defines the LambdaMangleContext class, which keeps track of
  11 //  the Itanium C++ ABI mangling numbers for lambda expressions.
  12 //
  13 //===----------------------------------------------------------------------===//
  14
  15 #include "clang/AST/LambdaMangleContext.h"
  16 #include "clang/AST/ASTContext.h"
  17 #include "clang/AST/DeclCXX.h"
  18
  19 using namespace clang;
  20
  21 unsigned LambdaMangleContext::getManglingNumber(CXXMethodDecl *CallOperator) {
  22   const FunctionProtoType *Proto
  23     = CallOperator->getType()->getAs<FunctionProtoType>();
  24   ASTContext &Context = CallOperator->getASTContext();
  25
  26   QualType Key = Context.getFunctionType(Context.VoidTy,
  27                                          Proto->arg_type_begin(),
  28                                          Proto->getNumArgs(),
  29                                          FunctionProtoType::ExtProtoInfo());
  30   Key = Context.getCanonicalType(Key);
  31   return ++ManglingNumbers[Key->castAs<FunctionProtoType>()];
  32 }