| //===--- UnknownSyntax.h - Swift Unknown Syntax Interface -------*- 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 |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef SWIFT_SYNTAX_UNKNOWNSYNTAX_H |
| #define SWIFT_SYNTAX_UNKNOWNSYNTAX_H |
| |
| #include "swift/Syntax/SyntaxData.h" |
| #include "swift/Syntax/Syntax.h" |
| |
| #include <vector> |
| |
| namespace swift { |
| namespace syntax { |
| |
| #pragma mark unknown-syntax Data |
| |
| class UnknownSyntaxData : public SyntaxData { |
| friend class SyntaxData; |
| friend class UnknownSyntax; |
| friend struct SyntaxFactory; |
| friend class LegacyASTTransformer; |
| |
| protected: |
| std::vector<RC<SyntaxData>> CachedChildren; |
| |
| UnknownSyntaxData(const RC<RawSyntax> Raw, |
| const SyntaxData *Parent = nullptr, |
| const CursorIndex IndexInParent = 0); |
| public: |
| |
| static RC<UnknownSyntaxData> make(RC<RawSyntax> Raw, |
| const SyntaxData *Parent = nullptr, |
| CursorIndex IndexInParent = 0); |
| |
| size_t getNumChildren() const { |
| return CachedChildren.size(); |
| } |
| |
| /// Get the child at the given Index. |
| /// |
| /// Precondition: Index <= getNumChildren(); |
| Syntax getChild(size_t Index) const; |
| |
| static bool classof(const SyntaxData *SD) { |
| return SD->isUnknown(); |
| } |
| }; |
| |
| #pragma mark unknown-syntax API |
| |
| /// A chunk of "unknown" syntax. |
| /// |
| /// Effectively wraps a tree of RawSyntax. |
| /// |
| /// This should not be vended by SyntaxFactory. |
| class UnknownSyntax : public Syntax { |
| friend struct SyntaxFactory; |
| friend class Syntax; |
| |
| using DataType = UnknownSyntaxData; |
| |
| public: |
| UnknownSyntax(const RC<SyntaxData> Root, const UnknownSyntaxData *Data); |
| |
| /// Get the number of child nodes in this piece of syntax, not including |
| /// tokens. |
| size_t getNumChildren() const; |
| |
| /// Get the Nth child of this piece of syntax. |
| Syntax getChild(const size_t N) const; |
| |
| static bool classof(const Syntax *S) { |
| return S->isUnknown(); |
| } |
| }; |
| |
| } // end namespace syntax |
| } // end namespace swift |
| |
| #endif // SWIFT_SYNTAX_UNKNOWNSYNTAX_H |