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