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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 
getManglingNumber(CXXMethodDecl * CallOperator)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 }
33