Coverage Report

Created: 2020-09-19 12:23

/Users/buildslave/jenkins/workspace/coverage/llvm-project/clang/lib/Tooling/ExpandResponseFilesCompilationDatabase.cpp
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//===- ExpandResponseFileCompilationDataBase.cpp --------------------------===//
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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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#include "clang/Tooling/CompilationDatabase.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/ADT/Triple.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/ConvertUTF.h"
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#include "llvm/Support/ErrorOr.h"
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#include "llvm/Support/Host.h"
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#include "llvm/Support/MemoryBuffer.h"
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#include "llvm/Support/Path.h"
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#include "llvm/Support/StringSaver.h"
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namespace clang {
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namespace tooling {
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namespace {
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class ExpandResponseFilesDatabase : public CompilationDatabase {
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public:
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  ExpandResponseFilesDatabase(
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      std::unique_ptr<CompilationDatabase> Base,
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      llvm::cl::TokenizerCallback Tokenizer,
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      llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem> FS)
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      : Base(std::move(Base)), Tokenizer(Tokenizer), FS(std::move(FS)) {
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    assert(this->Base != nullptr);
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    assert(this->Tokenizer != nullptr);
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    assert(this->FS != nullptr);
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  }
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  std::vector<std::string> getAllFiles() const override {
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    return Base->getAllFiles();
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  }
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  std::vector<CompileCommand>
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  getCompileCommands(StringRef FilePath) const override {
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    return expand(Base->getCompileCommands(FilePath));
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  }
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  std::vector<CompileCommand> getAllCompileCommands() const override {
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    return expand(Base->getAllCompileCommands());
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  }
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private:
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  std::vector<CompileCommand> expand(std::vector<CompileCommand> Cmds) const {
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    for (auto &Cmd : Cmds) {
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      bool SeenRSPFile = false;
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      llvm::SmallVector<const char *, 20> Argv;
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      Argv.reserve(Cmd.CommandLine.size());
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      for (auto &Arg : Cmd.CommandLine) {
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        Argv.push_back(Arg.c_str());
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        SeenRSPFile |= Arg.front() == '@';
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      }
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      if (!SeenRSPFile)
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        continue;
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      llvm::BumpPtrAllocator Alloc;
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      llvm::StringSaver Saver(Alloc);
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      llvm::cl::ExpandResponseFiles(Saver, Tokenizer, Argv, false, false, *FS,
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                                    llvm::StringRef(Cmd.Directory));
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      // Don't assign directly, Argv aliases CommandLine.
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      std::vector<std::string> ExpandedArgv(Argv.begin(), Argv.end());
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      Cmd.CommandLine = std::move(ExpandedArgv);
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    }
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    return Cmds;
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  }
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private:
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  std::unique_ptr<CompilationDatabase> Base;
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  llvm::cl::TokenizerCallback Tokenizer;
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  llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem> FS;
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};
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} // namespace
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std::unique_ptr<CompilationDatabase>
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expandResponseFiles(std::unique_ptr<CompilationDatabase> Base,
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                    llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem> FS) {
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  auto Tokenizer = llvm::Triple(llvm::sys::getProcessTriple()).isOSWindows()
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                       ? llvm::cl::TokenizeWindowsCommandLine
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                       : llvm::cl::TokenizeGNUCommandLine;
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  return std::make_unique<ExpandResponseFilesDatabase>(
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      std::move(Base), Tokenizer, std::move(FS));
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}
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} // namespace tooling
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} // namespace clang