| 1 | //===--- IncrementalParser.h - Incremental Compilation ----------*- C++ -*-===// |
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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 | // This file implements the class which performs incremental code compilation. |
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| 10 | // |
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| 11 | //===----------------------------------------------------------------------===// |
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| 12 | |
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| 13 | #ifndef LLVM_CLANG_LIB_INTERPRETER_INCREMENTALPARSER_H |
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| 14 | #define LLVM_CLANG_LIB_INTERPRETER_INCREMENTALPARSER_H |
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| 15 | |
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| 16 | #include "llvm/ADT/StringRef.h" |
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| 17 | #include "llvm/Support/Error.h" |
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| 18 | |
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| 19 | #include <list> |
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| 20 | #include <memory> |
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| 21 | |
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| 22 | namespace clang { |
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| 23 | class ASTConsumer; |
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| 24 | class CodeGenerator; |
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| 25 | class CompilerInstance; |
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| 26 | class Parser; |
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| 27 | class Sema; |
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| 28 | class TranslationUnitDecl; |
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| 29 | |
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| 30 | /// Provides support for incremental compilation. Keeps track of the state |
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| 31 | /// changes between the subsequent incremental input. |
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| 32 | /// |
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| 33 | class IncrementalParser { |
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| 34 | protected: |
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| 35 | /// The Sema performing the incremental compilation. |
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| 36 | Sema &S; |
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| 37 | |
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| 38 | /// Parser. |
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| 39 | std::unique_ptr<Parser> P; |
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| 40 | |
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| 41 | /// Consumer to process the produced top level decls. Owned by Act. |
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| 42 | ASTConsumer *Consumer = nullptr; |
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| 43 | |
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| 44 | /// Counts the number of direct user input lines that have been parsed. |
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| 45 | unsigned InputCount = 0; |
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| 46 | |
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| 47 | // IncrementalParser(); |
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| 48 | |
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| 49 | public: |
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| 50 | IncrementalParser(CompilerInstance &Instance, llvm::Error &Err); |
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| 51 | virtual ~IncrementalParser(); |
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| 52 | |
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| 53 | /// Parses incremental input by creating an in-memory file. |
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| 54 | ///\returns a \c PartialTranslationUnit which holds information about the |
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| 55 | /// \c TranslationUnitDecl. |
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| 56 | virtual llvm::Expected<TranslationUnitDecl *> Parse(llvm::StringRef Input); |
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| 57 | |
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| 58 | void CleanUpPTU(TranslationUnitDecl *MostRecentTU); |
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| 59 | |
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| 60 | private: |
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| 61 | llvm::Expected<TranslationUnitDecl *> ParseOrWrapTopLevelDecl(); |
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| 62 | }; |
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| 63 | } // end namespace clang |
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| 64 | |
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| 65 | #endif // LLVM_CLANG_LIB_INTERPRETER_INCREMENTALPARSER_H |
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| 66 | |
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