forked from OSchip/llvm-project
124 lines
4.5 KiB
C++
124 lines
4.5 KiB
C++
//===-- Core/ReplacementHandling.h ------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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///
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/// \file
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/// \brief This file defines the ReplacementHandling class which abstracts
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/// serialization and application of serialized replacements.
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///
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//===----------------------------------------------------------------------===//
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#ifndef CLANG_MODERNIZE_REPLACEMENTHANDLING_H
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#define CLANG_MODERNIZE_REPLACEMENTHANDLING_H
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#include "Core/Transform.h"
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#include "llvm/ADT/StringRef.h"
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class ReplacementHandling {
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public:
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ReplacementHandling() : DoFormat(false) {}
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/// \brief Finds the path to the executable 'clang-apply-replacements'.
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///
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/// The executable is searched for on the PATH. If not found, looks in the
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/// same directory as the image used to start the current executable.
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///
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/// \param[in] Argv0 argv[0] as passed to main().
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///
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/// \returns \li true if clang-apply-replacements was found.
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/// \li false otherwise.
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bool findClangApplyReplacements(const char *Argv0);
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/// \brief Set the name of the directory in which replacements will be
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/// serialized.
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///
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/// \param[in] Dir Destination directory name
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void setDestinationDir(llvm::StringRef Dir) { DestinationDir = Dir; }
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/// \brief Create a new temporary directory to serialize replacements into.
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///
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/// \returns The name of the directory createdy.
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llvm::StringRef useTempDestinationDir();
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/// \brief Enable clang-apply-replacements do code reformatting when applying
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/// serialized replacements.
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///
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/// \param[in] Style Value to pass to clang-apply-replacement's --style
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/// option.
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/// \param[in] StyleConfigDir If non-empty, value to pass to
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/// clang-apply-replacement's --style-config option.
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void enableFormatting(llvm::StringRef Style,
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llvm::StringRef StyleConfigDir = "");
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/// \brief Write all TranslationUnitReplacements stored in \c Replacements
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/// to disk.
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///
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/// \pre Destination directory must have been previously set by calling
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/// setDestiantionDir() or useTempDestinationDir().
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/// \pre Destination dir must exist.
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///
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/// \param[in] Replacements Container of replacements to serialize.
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///
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/// \returns \li true if all replacements were serialized successfully to
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/// disk.
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/// \li false otherwise.
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bool serializeReplacements(const TUReplacementsMap &Replacements);
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/// \brief Invoke clang-apply-replacements to apply all serialized
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/// replacements stored in the destination directory.
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///
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/// \pre Destination directory must have been previously set by calling
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/// setDestiantionDir() or useTempDestinationDir().
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///
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/// \returns \li true if clang-apply-replacements was successfully launched
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/// and successfully completed.
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/// \li false otherwise.
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bool applyReplacements();
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/// \brief Generate a unique filename to store the replacements.
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///
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/// Generates a unique filename in \c DestinationDir. The filename is generated
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/// following this pattern:
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///
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/// DestinationDir/Prefix_%%_%%_%%_%%_%%_%%.yaml
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///
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/// where Prefix := llvm::sys::path::filename(MainSourceFile) and all '%' will
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/// be replaced by a randomly chosen hex digit.
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///
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/// \param[in] DestinationDir Directory the unique file should be placed in.
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/// \param[in] MainSourceFile Full path to the source file.
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/// \param[out] Result The resulting unique filename.
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/// \param[out] Error If an error occurs a description of that error is
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/// placed in this string.
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///
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/// \returns \li true on success
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/// \li false if a unique file name could not be created.
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static bool generateReplacementsFileName(llvm::StringRef DestinationDir,
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llvm::StringRef MainSourceFile,
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llvm::SmallVectorImpl<char> &Result,
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llvm::SmallVectorImpl<char> &Error);
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/// \brief Helper to create a temporary directory name.
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///
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/// \post The directory named by the returned string exists.
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///
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/// \returns A temp directory name.
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static std::string generateTempDir();
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private:
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std::string CARPath;
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std::string DestinationDir;
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bool DoFormat;
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std::string FormatStyle;
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std::string StyleConfigDir;
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};
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#endif // CLANG_MODERNIZE_REPLACEMENTHANDLING_H
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