Coverage Report

Created: 2020-09-15 12:33

/Users/buildslave/jenkins/workspace/coverage/llvm-project/clang/include/clang/Tooling/DependencyScanning/DependencyScanningWorker.h
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//===- DependencyScanningWorker.h - clang-scan-deps worker ===---*- C++ -*-===//
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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_DEPENDENCY_SCANNING_WORKER_H
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#define LLVM_CLANG_TOOLING_DEPENDENCY_SCANNING_WORKER_H
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#include "clang/Basic/DiagnosticOptions.h"
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#include "clang/Basic/FileManager.h"
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#include "clang/Basic/LLVM.h"
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#include "clang/Frontend/PCHContainerOperations.h"
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#include "clang/Lex/PreprocessorExcludedConditionalDirectiveSkipMapping.h"
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#include "clang/Tooling/CompilationDatabase.h"
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#include "clang/Tooling/DependencyScanning/DependencyScanningService.h"
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#include "clang/Tooling/DependencyScanning/ModuleDepCollector.h"
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#include "llvm/Support/Error.h"
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#include "llvm/Support/FileSystem.h"
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#include <string>
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namespace clang {
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class DependencyOutputOptions;
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namespace tooling {
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namespace dependencies {
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class DependencyScanningWorkerFilesystem;
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class DependencyConsumer {
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public:
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  virtual ~DependencyConsumer() {}
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  virtual void handleFileDependency(const DependencyOutputOptions &Opts,
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                                    StringRef Filename) = 0;
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  virtual void handleModuleDependency(ModuleDeps MD) = 0;
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  virtual void handleContextHash(std::string Hash) = 0;
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};
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/// An individual dependency scanning worker that is able to run on its own
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/// thread.
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///
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/// The worker computes the dependencies for the input files by preprocessing
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/// sources either using a fast mode where the source files are minimized, or
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/// using the regular processing run.
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class DependencyScanningWorker {
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public:
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  DependencyScanningWorker(DependencyScanningService &Service);
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  /// Run the dependency scanning tool for a given clang driver invocation (as
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  /// specified for the given Input in the CDB), and report the discovered
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  /// dependencies to the provided consumer.
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  ///
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  /// \returns A \c StringError with the diagnostic output if clang errors
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  /// occurred, success otherwise.
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  llvm::Error computeDependencies(const std::string &Input,
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                                  StringRef WorkingDirectory,
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                                  const CompilationDatabase &CDB,
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                                  DependencyConsumer &Consumer);
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private:
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  IntrusiveRefCntPtr<DiagnosticOptions> DiagOpts;
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  std::shared_ptr<PCHContainerOperations> PCHContainerOps;
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  std::unique_ptr<ExcludedPreprocessorDirectiveSkipMapping> PPSkipMappings;
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  llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem> RealFS;
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  /// The file system that is used by each worker when scanning for
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  /// dependencies. This filesystem persists accross multiple compiler
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  /// invocations.
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  llvm::IntrusiveRefCntPtr<DependencyScanningWorkerFilesystem> DepFS;
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  /// The file manager that is reused accross multiple invocations by this
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  /// worker. If null, the file manager will not be reused.
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  llvm::IntrusiveRefCntPtr<FileManager> Files;
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  ScanningOutputFormat Format;
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};
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} // end namespace dependencies
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} // end namespace tooling
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} // end namespace clang
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#endif // LLVM_CLANG_TOOLING_DEPENDENCY_SCANNING_WORKER_H