| 1 | //===- TokenBufferTokenManager.h -----------------------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | #ifndef LLVM_CLANG_TOOLING_SYNTAX_TOKEN_BUFFER_TOKEN_MANAGER_H |
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| 10 | #define LLVM_CLANG_TOOLING_SYNTAX_TOKEN_BUFFER_TOKEN_MANAGER_H |
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| 11 | |
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| 12 | #include "clang/Tooling/Syntax/TokenManager.h" |
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| 13 | #include "clang/Tooling/Syntax/Tokens.h" |
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| 14 | |
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| 15 | namespace clang { |
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| 16 | namespace syntax { |
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| 17 | |
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| 18 | /// A TokenBuffer-powered token manager. |
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| 19 | /// It tracks the underlying token buffers, source manager, etc. |
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| 20 | class TokenBufferTokenManager : public TokenManager { |
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| 21 | public: |
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| 22 | TokenBufferTokenManager(const TokenBuffer &Tokens, |
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| 23 | const LangOptions &LangOpts, SourceManager &SourceMgr) |
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| 24 | : Tokens(Tokens), LangOpts(LangOpts), SM(SourceMgr) {} |
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| 25 | |
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| 26 | static bool classof(const TokenManager *N) { return N->kind() == Kind; } |
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| 27 | llvm::StringLiteral kind() const override { return Kind; } |
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| 28 | |
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| 29 | llvm::StringRef getText(Key I) const override { |
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| 30 | const auto *Token = getToken(I); |
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| 31 | assert(Token); |
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| 32 | // Handle 'eof' separately, calling text() on it produces an empty string. |
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| 33 | // FIXME: this special logic is for syntax::Leaf dump, move it when we |
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| 34 | // have a direct way to retrive token kind in the syntax::Leaf. |
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| 35 | if (Token->kind() == tok::eof) |
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| 36 | return "<eof>" ; |
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| 37 | return Token->text(SM); |
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| 38 | } |
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| 39 | |
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| 40 | const syntax::Token *getToken(Key I) const { |
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| 41 | return reinterpret_cast<const syntax::Token *>(I); |
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| 42 | } |
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| 43 | SourceManager &sourceManager() { return SM; } |
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| 44 | const SourceManager &sourceManager() const { return SM; } |
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| 45 | const TokenBuffer &tokenBuffer() const { return Tokens; } |
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| 46 | |
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| 47 | private: |
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| 48 | // This manager is powered by the TokenBuffer. |
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| 49 | static constexpr llvm::StringLiteral Kind = "TokenBuffer" ; |
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| 50 | |
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| 51 | /// Add \p Buffer to the underlying source manager, tokenize it and store the |
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| 52 | /// resulting tokens. Used exclusively in `FactoryImpl` to materialize tokens |
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| 53 | /// that were not written in user code. |
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| 54 | std::pair<FileID, ArrayRef<Token>> |
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| 55 | lexBuffer(std::unique_ptr<llvm::MemoryBuffer> Buffer); |
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| 56 | friend class FactoryImpl; |
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| 57 | |
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| 58 | const TokenBuffer &Tokens; |
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| 59 | const LangOptions &LangOpts; |
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| 60 | |
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| 61 | /// The underlying source manager for the ExtraTokens. |
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| 62 | SourceManager &SM; |
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| 63 | /// IDs and storage for additional tokenized files. |
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| 64 | llvm::DenseMap<FileID, std::vector<Token>> ; |
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| 65 | }; |
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| 66 | |
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| 67 | } // namespace syntax |
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| 68 | } // namespace clang |
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| 69 | |
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| 70 | #endif // LLVM_CLANG_TOOLING_SYNTAX_TOKEN_BUFFER_TOKEN_MANAGER_H |
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| 71 | |
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