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 TagDecl; |
25 | class VarDecl; |
26 | |
27 | /// Keeps track of the mangled names of lambda expressions and block |
28 | /// literals within a particular context. |
29 | class MangleNumberingContext { |
30 | // The index of the next lambda we encounter in this context. |
31 | unsigned LambdaIndex = 0; |
32 | |
33 | public: |
34 | virtual ~MangleNumberingContext() {} |
35 | |
36 | /// Retrieve the mangling number of a new lambda expression with the |
37 | /// given call operator within this context. |
38 | virtual unsigned getManglingNumber(const CXXMethodDecl *CallOperator) = 0; |
39 | |
40 | /// Retrieve the mangling number of a new block literal within this |
41 | /// context. |
42 | virtual unsigned getManglingNumber(const BlockDecl *BD) = 0; |
43 | |
44 | /// Static locals are numbered by source order. |
45 | virtual unsigned getStaticLocalNumber(const VarDecl *VD) = 0; |
46 | |
47 | /// Retrieve the mangling number of a static local variable within |
48 | /// this context. |
49 | virtual unsigned getManglingNumber(const VarDecl *VD, |
50 | unsigned MSLocalManglingNumber) = 0; |
51 | |
52 | /// Retrieve the mangling number of a static local variable within |
53 | /// this context. |
54 | virtual unsigned getManglingNumber(const TagDecl *TD, |
55 | unsigned MSLocalManglingNumber) = 0; |
56 | |
57 | /// Retrieve the mangling number of a new lambda expression with the |
58 | /// given call operator within the device context. No device number is |
59 | /// assigned if there's no device numbering context is associated. |
60 | virtual unsigned getDeviceManglingNumber(const CXXMethodDecl *) { return 0; } |
61 | |
62 | // Retrieve the index of the next lambda appearing in this context, which is |
63 | // used for deduplicating lambdas across modules. Note that this is a simple |
64 | // sequence number and is not ABI-dependent. |
65 | unsigned getNextLambdaIndex() { return LambdaIndex++; } |
66 | }; |
67 | |
68 | } // end namespace clang |
69 | #endif |
70 | |