Coverage Report

Created: 2023-11-11 10:31

/Users/buildslave/jenkins/workspace/coverage/llvm-project/clang/include/clang/Tooling/Syntax/TokenBufferTokenManager.h
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//===- TokenBufferTokenManager.h  -----------------------------------------===//
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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_TOOLING_SYNTAX_TOKEN_BUFFER_TOKEN_MANAGER_H
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#define LLVM_CLANG_TOOLING_SYNTAX_TOKEN_BUFFER_TOKEN_MANAGER_H
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#include "clang/Tooling/Syntax/TokenManager.h"
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#include "clang/Tooling/Syntax/Tokens.h"
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namespace clang {
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namespace syntax {
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/// A TokenBuffer-powered token manager.
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/// It tracks the underlying token buffers, source manager, etc.
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class TokenBufferTokenManager : public TokenManager {
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public:
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  TokenBufferTokenManager(const TokenBuffer &Tokens,
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                          const LangOptions &LangOpts, SourceManager &SourceMgr)
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      : Tokens(Tokens), LangOpts(LangOpts), SM(SourceMgr) {}
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  static bool classof(const TokenManager *N) { return N->kind() == Kind; }
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  llvm::StringLiteral kind() const override { return Kind; }
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  llvm::StringRef getText(Key I) const override {
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    const auto *Token = getToken(I);
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    assert(Token);
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    // Handle 'eof' separately, calling text() on it produces an empty string.
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    // FIXME: this special logic is for syntax::Leaf dump, move it when we
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    // have a direct way to retrive token kind in the syntax::Leaf.
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    if (Token->kind() == tok::eof)
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      return "<eof>";
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    return Token->text(SM);
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  }
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  const syntax::Token *getToken(Key I) const {
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    return reinterpret_cast<const syntax::Token *>(I);
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  }
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  SourceManager &sourceManager() { return SM; }
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  const SourceManager &sourceManager() const { return SM; }
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  const TokenBuffer &tokenBuffer() const { return Tokens; }
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private:
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  // This manager is powered by the TokenBuffer.
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  static constexpr llvm::StringLiteral Kind = "TokenBuffer";
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  /// Add \p Buffer to the underlying source manager, tokenize it and store the
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  /// resulting tokens. Used exclusively in `FactoryImpl` to materialize tokens
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  /// that were not written in user code.
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  std::pair<FileID, ArrayRef<Token>>
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  lexBuffer(std::unique_ptr<llvm::MemoryBuffer> Buffer);
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  friend class FactoryImpl;
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  const TokenBuffer &Tokens;
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  const LangOptions &LangOpts;
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  /// The underlying source manager for the ExtraTokens.
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  SourceManager &SM;
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  /// IDs and storage for additional tokenized files.
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  llvm::DenseMap<FileID, std::vector<Token>> ExtraTokens;
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};
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} // namespace syntax
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} // namespace clang
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#endif // LLVM_CLANG_TOOLING_SYNTAX_TOKEN_BUFFER_TOKEN_MANAGER_H