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72 lines
1.8 KiB
C++
72 lines
1.8 KiB
C++
//===--- FunctionPointer.h - Types for the constexpr VM ----------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CLANG_AST_INTERP_FUNCTION_POINTER_H
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#define LLVM_CLANG_AST_INTERP_FUNCTION_POINTER_H
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#include "Function.h"
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#include "Primitives.h"
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#include "clang/AST/APValue.h"
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namespace clang {
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class ASTContext;
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namespace interp {
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class FunctionPointer final {
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private:
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const Function *Func;
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public:
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FunctionPointer() : Func(nullptr) {}
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FunctionPointer(const Function *Func) : Func(Func) { assert(Func); }
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const Function *getFunction() const { return Func; }
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APValue toAPValue() const {
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if (!Func)
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return APValue(static_cast<Expr *>(nullptr), CharUnits::Zero(), {},
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/*OnePastTheEnd=*/false, /*IsNull=*/true);
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return APValue(Func->getDecl(), CharUnits::Zero(), {},
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/*OnePastTheEnd=*/false, /*IsNull=*/false);
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}
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void print(llvm::raw_ostream &OS) const {
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OS << "FnPtr(";
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if (Func)
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OS << Func->getName();
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else
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OS << "nullptr";
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OS << ")";
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}
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std::string toDiagnosticString(const ASTContext &Ctx) const {
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if (!Func)
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return "nullptr";
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return toAPValue().getAsString(Ctx, Func->getDecl()->getType());
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}
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ComparisonCategoryResult compare(const FunctionPointer &RHS) const {
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if (Func == RHS.Func)
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return ComparisonCategoryResult::Equal;
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return ComparisonCategoryResult::Unordered;
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}
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};
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inline llvm::raw_ostream &operator<<(llvm::raw_ostream &OS,
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FunctionPointer FP) {
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FP.print(OS);
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return OS;
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}
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} // namespace interp
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} // namespace clang
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#endif
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