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      1 //===--- MangleNumberingContext.cpp - Context for mangling numbers --------===//
      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/MangleNumberingContext.h"
     16 #include "clang/AST/ASTContext.h"
     17 #include "clang/AST/DeclCXX.h"
     18 
     19 using namespace clang;
     20 
     21 unsigned
     22 MangleNumberingContext::getManglingNumber(const CXXMethodDecl *CallOperator) {
     23   const FunctionProtoType *Proto
     24     = CallOperator->getType()->getAs<FunctionProtoType>();
     25   ASTContext &Context = CallOperator->getASTContext();
     26 
     27   QualType Key = Context.getFunctionType(Context.VoidTy, Proto->getArgTypes(),
     28                                          FunctionProtoType::ExtProtoInfo());
     29   Key = Context.getCanonicalType(Key);
     30   return ++ManglingNumbers[Key->castAs<FunctionProtoType>()];
     31 }
     32 
     33 unsigned
     34 MangleNumberingContext::getManglingNumber(const BlockDecl *BD) {
     35   // FIXME: Compute a BlockPointerType?  Not obvious how.
     36   const Type *Ty = 0;
     37   return ++ManglingNumbers[Ty];
     38 }
     39 
     40 unsigned
     41 MangleNumberingContext::getManglingNumber(const VarDecl *VD) {
     42   return ++VarManglingNumbers[VD->getIdentifier()];
     43 }
     44 
     45 unsigned
     46 MangleNumberingContext::getManglingNumber(const TagDecl *TD) {
     47   return ++TagManglingNumbers[TD->getIdentifier()];
     48 }
     49