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1 //===- ExpandResponseFileCompilationDataBase.cpp --------------------------===//
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2 //
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3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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4 // See https://llvm.org/LICENSE.txt for license information.
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5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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6 //
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7 //===----------------------------------------------------------------------===//
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8
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9 #include "clang/Tooling/CompilationDatabase.h"
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10 #include "llvm/ADT/StringRef.h"
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11 #include "llvm/ADT/Triple.h"
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12 #include "llvm/Support/CommandLine.h"
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13 #include "llvm/Support/ConvertUTF.h"
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14 #include "llvm/Support/ErrorOr.h"
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173
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15 #include "llvm/Support/Host.h"
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150
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16 #include "llvm/Support/MemoryBuffer.h"
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17 #include "llvm/Support/Path.h"
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18 #include "llvm/Support/StringSaver.h"
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19
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20 namespace clang {
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21 namespace tooling {
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22 namespace {
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23
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24 class ExpandResponseFilesDatabase : public CompilationDatabase {
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25 public:
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26 ExpandResponseFilesDatabase(
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27 std::unique_ptr<CompilationDatabase> Base,
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28 llvm::cl::TokenizerCallback Tokenizer,
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29 llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem> FS)
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30 : Base(std::move(Base)), Tokenizer(Tokenizer), FS(std::move(FS)) {
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31 assert(this->Base != nullptr);
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32 assert(this->Tokenizer != nullptr);
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33 assert(this->FS != nullptr);
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34 }
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35
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36 std::vector<std::string> getAllFiles() const override {
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37 return Base->getAllFiles();
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38 }
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39
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40 std::vector<CompileCommand>
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41 getCompileCommands(StringRef FilePath) const override {
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42 return expand(Base->getCompileCommands(FilePath));
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43 }
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44
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45 std::vector<CompileCommand> getAllCompileCommands() const override {
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46 return expand(Base->getAllCompileCommands());
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47 }
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48
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49 private:
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50 std::vector<CompileCommand> expand(std::vector<CompileCommand> Cmds) const {
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51 for (auto &Cmd : Cmds) {
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52 bool SeenRSPFile = false;
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53 llvm::SmallVector<const char *, 20> Argv;
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54 Argv.reserve(Cmd.CommandLine.size());
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55 for (auto &Arg : Cmd.CommandLine) {
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56 Argv.push_back(Arg.c_str());
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57 SeenRSPFile |= Arg.front() == '@';
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58 }
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59 if (!SeenRSPFile)
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60 continue;
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61 llvm::BumpPtrAllocator Alloc;
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62 llvm::StringSaver Saver(Alloc);
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63 llvm::cl::ExpandResponseFiles(Saver, Tokenizer, Argv, false, false, *FS,
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64 llvm::StringRef(Cmd.Directory));
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65 // Don't assign directly, Argv aliases CommandLine.
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66 std::vector<std::string> ExpandedArgv(Argv.begin(), Argv.end());
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67 Cmd.CommandLine = std::move(ExpandedArgv);
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68 }
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69 return Cmds;
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70 }
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71
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72 private:
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73 std::unique_ptr<CompilationDatabase> Base;
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74 llvm::cl::TokenizerCallback Tokenizer;
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75 llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem> FS;
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76 };
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77
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78 } // namespace
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79
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80 std::unique_ptr<CompilationDatabase>
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81 expandResponseFiles(std::unique_ptr<CompilationDatabase> Base,
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82 llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem> FS) {
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83 auto Tokenizer = llvm::Triple(llvm::sys::getProcessTriple()).isOSWindows()
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84 ? llvm::cl::TokenizeWindowsCommandLine
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85 : llvm::cl::TokenizeGNUCommandLine;
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86 return std::make_unique<ExpandResponseFilesDatabase>(
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87 std::move(Base), Tokenizer, std::move(FS));
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88 }
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89
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90 } // namespace tooling
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91 } // namespace clang
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