/Users/buildslave/jenkins/workspace/coverage/llvm-project/clang/lib/AST/Interp/FunctionPointer.h
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1 | | //===--- FunctionPointer.h - Types for the constexpr VM ----------*- 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 | | #ifndef LLVM_CLANG_AST_INTERP_FUNCTION_POINTER_H |
10 | | #define LLVM_CLANG_AST_INTERP_FUNCTION_POINTER_H |
11 | | |
12 | | #include "Function.h" |
13 | | #include "Primitives.h" |
14 | | #include "clang/AST/APValue.h" |
15 | | |
16 | | namespace clang { |
17 | | class ASTContext; |
18 | | namespace interp { |
19 | | |
20 | | class FunctionPointer final { |
21 | | private: |
22 | | const Function *Func; |
23 | | |
24 | | public: |
25 | 30 | FunctionPointer() : Func(nullptr) {} |
26 | 76 | FunctionPointer(const Function *Func) : Func(Func) { assert(Func); } |
27 | | |
28 | 56 | const Function *getFunction() const { return Func; } |
29 | | |
30 | 37 | APValue toAPValue() const { |
31 | 37 | if (!Func) |
32 | 6 | return APValue(static_cast<Expr *>(nullptr), CharUnits::Zero(), {}, |
33 | 6 | /*OnePastTheEnd=*/false, /*IsNull=*/true); |
34 | | |
35 | 31 | return APValue(Func->getDecl(), CharUnits::Zero(), {}, |
36 | 31 | /*OnePastTheEnd=*/false, /*IsNull=*/false); |
37 | 37 | } |
38 | | |
39 | 0 | void print(llvm::raw_ostream &OS) const { |
40 | 0 | OS << "FnPtr("; |
41 | 0 | if (Func) |
42 | 0 | OS << Func->getName(); |
43 | 0 | else |
44 | 0 | OS << "nullptr"; |
45 | 0 | OS << ")"; |
46 | 0 | } |
47 | | |
48 | 12 | std::string toDiagnosticString(const ASTContext &Ctx) const { |
49 | 12 | if (!Func) |
50 | 3 | return "nullptr"; |
51 | | |
52 | 9 | return toAPValue().getAsString(Ctx, Func->getDecl()->getType()); |
53 | 12 | } |
54 | | |
55 | 30 | ComparisonCategoryResult compare(const FunctionPointer &RHS) const { |
56 | 30 | if (Func == RHS.Func) |
57 | 12 | return ComparisonCategoryResult::Equal; |
58 | 18 | return ComparisonCategoryResult::Unordered; |
59 | 30 | } |
60 | | }; |
61 | | |
62 | | inline llvm::raw_ostream &operator<<(llvm::raw_ostream &OS, |
63 | 0 | FunctionPointer FP) { |
64 | 0 | FP.print(OS); |
65 | 0 | return OS; |
66 | 0 | } |
67 | | |
68 | | } // namespace interp |
69 | | } // namespace clang |
70 | | |
71 | | #endif |