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:
~MangleNumberingContext()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.
getDeviceManglingNumber(const CXXMethodDecl *)59   virtual unsigned getDeviceManglingNumber(const CXXMethodDecl *) { return 0; }
60 };
61 
62 } // end namespace clang
63 #endif
64