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      1 //=== MangleNumberingContext.h - Context for mangling numbers ---*- C++ -*-===//
      2 //
      3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
      4 // See https://llvm.org/LICENSE.txt for license information.
      5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
      6 //
      7 //===----------------------------------------------------------------------===//
      8 //
      9 //  This file defines the LambdaBlockMangleContext interface, which keeps track
     10 //  of the Itanium C++ ABI mangling numbers for lambda expressions and block
     11 //  literals.
     12 //
     13 //===----------------------------------------------------------------------===//
     14 #ifndef LLVM_CLANG_AST_MANGLENUMBERINGCONTEXT_H
     15 #define LLVM_CLANG_AST_MANGLENUMBERINGCONTEXT_H
     16 
     17 #include "clang/Basic/LLVM.h"
     18 #include "llvm/ADT/IntrusiveRefCntPtr.h"
     19 
     20 namespace clang {
     21 
     22 class BlockDecl;
     23 class CXXMethodDecl;
     24 class IdentifierInfo;
     25 class TagDecl;
     26 class Type;
     27 class VarDecl;
     28 
     29 /// Keeps track of the mangled names of lambda expressions and block
     30 /// literals within a particular context.
     31 class MangleNumberingContext {
     32 public:
     33   virtual ~MangleNumberingContext() {}
     34 
     35   /// Retrieve the mangling number of a new lambda expression with the
     36   /// given call operator within this context.
     37   virtual unsigned getManglingNumber(const CXXMethodDecl *CallOperator) = 0;
     38 
     39   /// Retrieve the mangling number of a new block literal within this
     40   /// context.
     41   virtual unsigned getManglingNumber(const BlockDecl *BD) = 0;
     42 
     43   /// Static locals are numbered by source order.
     44   virtual unsigned getStaticLocalNumber(const VarDecl *VD) = 0;
     45 
     46   /// Retrieve the mangling number of a static local variable within
     47   /// this context.
     48   virtual unsigned getManglingNumber(const VarDecl *VD,
     49                                      unsigned MSLocalManglingNumber) = 0;
     50 
     51   /// Retrieve the mangling number of a static local variable within
     52   /// this context.
     53   virtual unsigned getManglingNumber(const TagDecl *TD,
     54                                      unsigned MSLocalManglingNumber) = 0;
     55 
     56   /// Retrieve the mangling number of a new lambda expression with the
     57   /// given call operator within the device context. No device number is
     58   /// assigned if there's no device numbering context is associated.
     59   virtual unsigned getDeviceManglingNumber(const CXXMethodDecl *) { return 0; }
     60 };
     61 
     62 } // end namespace clang
     63 #endif
     64