================ @@ -0,0 +1,78 @@ +//===-------------- ModuleDependencyScanner.h --------------------*- C++-*-===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANGD_MODULEDEPENDENCYSCANNER_H +#define LLVM_CLANG_TOOLS_EXTRA_CLANGD_MODULEDEPENDENCYSCANNER_H + +#include "GlobalCompilationDatabase.h" +#include "support/Path.h" +#include "support/ThreadsafeFS.h" + +#include "clang/Tooling/DependencyScanning/DependencyScanningService.h" +#include "clang/Tooling/DependencyScanning/DependencyScanningTool.h" + +#include "llvm/ADT/SmallString.h" +#include "llvm/ADT/StringMap.h" + +namespace clang { +namespace clangd { + +/// A scanner to produce P1689 format for C++20 Modules. +/// +/// The scanner can scan a single file with `scan(PathRef)` member function +/// or scan the whole project with `globalScan(PathRef)` member function. See +/// the comments of `globalScan` to see the details. +class ModuleDependencyScanner { +public: + ModuleDependencyScanner(const GlobalCompilationDatabase &CDB, + const ThreadsafeFS *TFS) + : CDB(CDB), TFS(TFS), + Service(tooling::dependencies::ScanningMode::CanonicalPreprocessing, + tooling::dependencies::ScanningOutputFormat::P1689) {} + + /// Scanning the single file specified by \param FilePath. + std::optional<clang::tooling::dependencies::P1689Rule> scan(PathRef FilePath); + + /// Scanning every source file in the current project to get the + /// <module-name> to <module-unit-source> map. + /// It looks unefficiency to scan the whole project especially for + /// every version of every file! + /// TODO: We should find a efficient method to get the <module-name> + /// to <module-unit-source> map. We can make it either by providing + /// a global module dependency scanner to monitor every file. Or we + /// can simply require the build systems (or even if the end users) + /// to provide the map. + void globalScan(PathRef File); + + PathRef getSourceForModuleName(StringRef ModuleName) const; + + /// Return the direct required modules. Indirect required modules are not + /// included. + std::vector<std::string> getRequiredModules(PathRef File) const; + StringRef getModuleName(PathRef File) const; + + const ThreadsafeFS *getThreadsafeFS() const { return TFS; } ---------------- ChuanqiXu9 wrote:
Done. https://github.com/llvm/llvm-project/pull/66462 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
