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//===--- CFTypeInfo.h - Information about CF types -------------*- C++ -*-===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
//
// This file provides support for reasoning about CF types
//
//===----------------------------------------------------------------------===//
#ifndef SWIFT_IMPORTER_CFTYPEINFO_H
#define SWIFT_IMPORTER_CFTYPEINFO_H
#include "llvm/ADT/PointerUnion.h"
#include "llvm/ADT/StringRef.h"
namespace clang {
class RecordDecl;
class TypedefNameDecl;
}
namespace swift {
namespace importer {
class CFPointeeInfo {
bool IsValid;
bool IsConst;
llvm::PointerUnion<const clang::RecordDecl *, const clang::TypedefNameDecl *>
Decl;
CFPointeeInfo() = default;
static CFPointeeInfo forRecord(bool isConst, const clang::RecordDecl *decl) {
assert(decl);
CFPointeeInfo info;
info.IsValid = true;
info.IsConst = isConst;
info.Decl = decl;
return info;
}
static CFPointeeInfo forTypedef(const clang::TypedefNameDecl *decl) {
assert(decl);
CFPointeeInfo info;
info.IsValid = true;
info.IsConst = false;
info.Decl = decl;
return info;
}
static CFPointeeInfo forConstVoid() {
CFPointeeInfo info;
info.IsValid = true;
info.IsConst = true;
info.Decl = nullptr;
return info;
}
static CFPointeeInfo forVoid() {
CFPointeeInfo info;
info.IsValid = true;
info.IsConst = false;
info.Decl = nullptr;
return info;
}
static CFPointeeInfo forInvalid() {
CFPointeeInfo info;
info.IsValid = false;
return info;
}
public:
static CFPointeeInfo classifyTypedef(const clang::TypedefNameDecl *decl);
static bool isKnownCFTypeName(llvm::StringRef name);
bool isValid() const { return IsValid; }
explicit operator bool() const { return isValid(); }
bool isConst() const { return IsConst; }
bool isVoid() const {
assert(isValid());
return Decl.isNull();
}
bool isRecord() const {
assert(isValid());
return !Decl.isNull() && Decl.is<const clang::RecordDecl *>();
}
const clang::RecordDecl *getRecord() const {
assert(isRecord());
return Decl.get<const clang::RecordDecl *>();
}
bool isTypedef() const {
assert(isValid());
return !Decl.isNull() && Decl.is<const clang::TypedefNameDecl *>();
}
const clang::TypedefNameDecl *getTypedef() const {
assert(isTypedef());
return Decl.get<const clang::TypedefNameDecl *>();
}
};
}
}
#endif // SWIFT_IMPORTER_CFTYPEINFO_H
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