forked from OSchip/llvm-project
92 lines
3.0 KiB
C++
92 lines
3.0 KiB
C++
//===--- GlobalCompilationDatabase.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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#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANGD_GLOBALCOMPILATIONDATABASE_H
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#define LLVM_CLANG_TOOLS_EXTRA_CLANGD_GLOBALCOMPILATIONDATABASE_H
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#include "Path.h"
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#include "llvm/ADT/StringMap.h"
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#include <memory>
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#include <mutex>
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#include <vector>
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namespace clang {
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namespace tooling {
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class CompilationDatabase;
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struct CompileCommand;
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} // namespace tooling
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namespace clangd {
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class Logger;
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/// Provides compilation arguments used for parsing C and C++ files.
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class GlobalCompilationDatabase {
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public:
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virtual ~GlobalCompilationDatabase() = default;
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/// If there are any known-good commands for building this file, returns one.
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virtual llvm::Optional<tooling::CompileCommand>
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getCompileCommand(PathRef File) const = 0;
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/// Makes a guess at how to build a file.
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/// The default implementation just runs clang on the file.
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/// Clangd should treat the results as unreliable.
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virtual tooling::CompileCommand getFallbackCommand(PathRef File) const;
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/// FIXME(ibiryukov): add facilities to track changes to compilation flags of
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/// existing targets.
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};
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/// Gets compile args from tooling::CompilationDatabases built for parent
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/// directories.
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class DirectoryBasedGlobalCompilationDatabase
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: public GlobalCompilationDatabase {
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public:
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DirectoryBasedGlobalCompilationDatabase(
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llvm::Optional<Path> CompileCommandsDir);
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~DirectoryBasedGlobalCompilationDatabase() override;
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/// Scans File's parents looking for compilation databases.
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/// Any extra flags will be added.
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llvm::Optional<tooling::CompileCommand>
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getCompileCommand(PathRef File) const override;
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/// Uses the default fallback command, adding any extra flags.
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tooling::CompileCommand getFallbackCommand(PathRef File) const override;
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/// Set the compile commands directory to \p P.
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void setCompileCommandsDir(Path P);
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/// Sets the extra flags that should be added to a file.
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void setExtraFlagsForFile(PathRef File, std::vector<std::string> ExtraFlags);
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private:
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tooling::CompilationDatabase *getCDBForFile(PathRef File) const;
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tooling::CompilationDatabase *getCDBInDirLocked(PathRef File) const;
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void addExtraFlags(PathRef File, tooling::CompileCommand &C) const;
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mutable std::mutex Mutex;
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/// Caches compilation databases loaded from directories(keys are
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/// directories).
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mutable llvm::StringMap<std::unique_ptr<clang::tooling::CompilationDatabase>>
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CompilationDatabases;
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/// Stores extra flags per file.
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llvm::StringMap<std::vector<std::string>> ExtraFlagsForFile;
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/// Used for command argument pointing to folder where compile_commands.json
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/// is located.
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llvm::Optional<Path> CompileCommandsDir;
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};
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} // namespace clangd
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} // namespace clang
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#endif
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