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95 lines
2.8 KiB
C++
95 lines
2.8 KiB
C++
//===--- DefaultArgumentKind.h - Default Argument Kind Enum -----*- C++ -*-===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines the DefaultArgumentKind enumeration.
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//
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//===----------------------------------------------------------------------===//
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#ifndef SWIFT_DEFAULTARGUMENTKIND_H
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#define SWIFT_DEFAULTARGUMENTKIND_H
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#include "llvm/ADT/StringRef.h"
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#include <cstdint>
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#include <string>
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namespace llvm {
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class StringRef;
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}
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namespace swift {
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/// Describes the kind of default argument a tuple pattern element has.
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enum class DefaultArgumentKind : uint8_t {
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/// No default argument.
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None,
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/// A normal default argument.
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Normal,
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/// The default argument is inherited from the corresponding argument of the
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/// overridden declaration.
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Inherited,
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/// The "nil" literal.
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NilLiteral,
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/// An empty array literal.
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EmptyArray,
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/// An empty dictionary literal.
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EmptyDictionary,
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/// A reference to the stored property. This is a special default argument
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/// kind for the synthesized memberwise constructor to emit a call to the
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/// property's initializer.
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StoredProperty,
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// Magic identifier literals expanded at the call site:
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#define MAGIC_IDENTIFIER(NAME, STRING) NAME,
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#include "swift/AST/MagicIdentifierKinds.def"
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/// An expression macro.
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ExpressionMacro
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};
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enum { NumDefaultArgumentKindBits = 4 };
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struct ArgumentAttrs {
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DefaultArgumentKind argumentKind;
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bool isUnavailableInSwift = false;
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llvm::StringRef CXXOptionsEnumName = "";
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ArgumentAttrs(DefaultArgumentKind argumentKind,
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bool isUnavailableInSwift = false,
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llvm::StringRef CXXOptionsEnumName = "")
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: argumentKind(argumentKind), isUnavailableInSwift(isUnavailableInSwift),
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CXXOptionsEnumName(CXXOptionsEnumName) {}
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bool operator !=(const DefaultArgumentKind &rhs) const {
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return argumentKind != rhs;
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}
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bool operator==(const DefaultArgumentKind &rhs) const {
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return argumentKind == rhs;
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}
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bool hasDefaultArg() const {
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return argumentKind != DefaultArgumentKind::None;
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}
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bool hasAlternateCXXOptionsEnumName() const {
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return !CXXOptionsEnumName.empty() && isUnavailableInSwift;
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}
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llvm::StringRef getAlternateCXXOptionsEnumName() const {
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assert(hasAlternateCXXOptionsEnumName() &&
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"Expected a C++ Options type for C++-Interop but found none.");
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return CXXOptionsEnumName;
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}
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};
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} // end namespace swift
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#endif // LLVM_SWIFT_DEFAULTARGUMENTKIND_H
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