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      1 //=== MangleNumberingContext.h - Context for mangling numbers ---*- 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 LambdaBlockMangleContext interface, which keeps track
     11 //  of the Itanium C++ ABI mangling numbers for lambda expressions and block
     12 //  literals.
     13 //
     14 //===----------------------------------------------------------------------===//
     15 #ifndef LLVM_CLANG_AST_MANGLENUMBERINGCONTEXT_H
     16 #define LLVM_CLANG_AST_MANGLENUMBERINGCONTEXT_H
     17 
     18 #include "clang/Basic/LLVM.h"
     19 #include "llvm/ADT/DenseMap.h"
     20 #include "llvm/ADT/IntrusiveRefCntPtr.h"
     21 
     22 namespace clang {
     23 
     24 class BlockDecl;
     25 class CXXMethodDecl;
     26 class IdentifierInfo;
     27 class TagDecl;
     28 class Type;
     29 class VarDecl;
     30 
     31 /// \brief Keeps track of the mangled names of lambda expressions and block
     32 /// literals within a particular context.
     33 class MangleNumberingContext : public RefCountedBase<MangleNumberingContext> {
     34 public:
     35   virtual ~MangleNumberingContext() {}
     36 
     37   /// \brief Retrieve the mangling number of a new lambda expression with the
     38   /// given call operator within this context.
     39   virtual unsigned getManglingNumber(const CXXMethodDecl *CallOperator) = 0;
     40 
     41   /// \brief Retrieve the mangling number of a new block literal within this
     42   /// context.
     43   virtual unsigned getManglingNumber(const BlockDecl *BD) = 0;
     44 
     45   /// Static locals are numbered by source order.
     46   virtual unsigned getStaticLocalNumber(const VarDecl *VD) = 0;
     47 
     48   /// \brief Retrieve the mangling number of a static local variable within
     49   /// this context.
     50   virtual unsigned getManglingNumber(const VarDecl *VD,
     51                                      unsigned MSLocalManglingNumber) = 0;
     52 
     53   /// \brief Retrieve the mangling number of a static local variable within
     54   /// this context.
     55   virtual unsigned getManglingNumber(const TagDecl *TD,
     56                                      unsigned MSLocalManglingNumber) = 0;
     57 };
     58 
     59 } // end namespace clang
     60 #endif
     61