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
15namespace clang {
16class ASTContext;
17class APValue;
18namespace interp {
19
20class FunctionPointer final {
21private:
22 const Function *Func;
23
24public:
25 FunctionPointer() = default;
26 FunctionPointer(const Function *Func) : Func(Func) {}
27
28 const Function *getFunction() const { return Func; }
29 bool isZero() const { return !Func; }
30 bool isWeak() const {
31 if (!Func || !Func->getDecl())
32 return false;
33
34 return Func->getDecl()->isWeak();
35 }
36
37 APValue toAPValue(const ASTContext &) const;
38 void print(llvm::raw_ostream &OS) const;
39
40 std::string toDiagnosticString(const ASTContext &Ctx) const {
41 if (!Func)
42 return "nullptr";
43
44 return toAPValue(Ctx).getAsString(Ctx, Ty: Func->getDecl()->getType());
45 }
46
47 uint64_t getIntegerRepresentation() const {
48 return static_cast<uint64_t>(reinterpret_cast<uintptr_t>(Func));
49 }
50};
51
52} // namespace interp
53} // namespace clang
54
55#endif
56