1 //===- ExpandResponseFileCompilationDataBase.cpp --------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 #include "clang/Tooling/CompilationDatabase.h"
10 #include "llvm/ADT/StringRef.h"
11 #include "llvm/ADT/Triple.h"
12 #include "llvm/Support/CommandLine.h"
13 #include "llvm/Support/ConvertUTF.h"
14 #include "llvm/Support/ErrorOr.h"
15 #include "llvm/Support/MemoryBuffer.h"
16 #include "llvm/Support/Path.h"
17 #include "llvm/Support/StringSaver.h"
18
19 namespace clang {
20 namespace tooling {
21 namespace {
22
23 class ExpandResponseFilesDatabase : public CompilationDatabase {
24 public:
ExpandResponseFilesDatabase(std::unique_ptr<CompilationDatabase> Base,llvm::cl::TokenizerCallback Tokenizer,llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem> FS)25 ExpandResponseFilesDatabase(
26 std::unique_ptr<CompilationDatabase> Base,
27 llvm::cl::TokenizerCallback Tokenizer,
28 llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem> FS)
29 : Base(std::move(Base)), Tokenizer(Tokenizer), FS(std::move(FS)) {
30 assert(this->Base != nullptr);
31 assert(this->Tokenizer != nullptr);
32 assert(this->FS != nullptr);
33 }
34
getAllFiles() const35 std::vector<std::string> getAllFiles() const override {
36 return Base->getAllFiles();
37 }
38
39 std::vector<CompileCommand>
getCompileCommands(StringRef FilePath) const40 getCompileCommands(StringRef FilePath) const override {
41 return expand(Base->getCompileCommands(FilePath));
42 }
43
getAllCompileCommands() const44 std::vector<CompileCommand> getAllCompileCommands() const override {
45 return expand(Base->getAllCompileCommands());
46 }
47
48 private:
expand(std::vector<CompileCommand> Cmds) const49 std::vector<CompileCommand> expand(std::vector<CompileCommand> Cmds) const {
50 for (auto &Cmd : Cmds) {
51 bool SeenRSPFile = false;
52 llvm::SmallVector<const char *, 20> Argv;
53 Argv.reserve(Cmd.CommandLine.size());
54 for (auto &Arg : Cmd.CommandLine) {
55 Argv.push_back(Arg.c_str());
56 SeenRSPFile |= Arg.front() == '@';
57 }
58 if (!SeenRSPFile)
59 continue;
60 llvm::BumpPtrAllocator Alloc;
61 llvm::StringSaver Saver(Alloc);
62 llvm::cl::ExpandResponseFiles(Saver, Tokenizer, Argv, false, false, *FS,
63 llvm::StringRef(Cmd.Directory));
64 // Don't assign directly, Argv aliases CommandLine.
65 std::vector<std::string> ExpandedArgv(Argv.begin(), Argv.end());
66 Cmd.CommandLine = std::move(ExpandedArgv);
67 }
68 return Cmds;
69 }
70
71 private:
72 std::unique_ptr<CompilationDatabase> Base;
73 llvm::cl::TokenizerCallback Tokenizer;
74 llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem> FS;
75 };
76
77 } // namespace
78
79 std::unique_ptr<CompilationDatabase>
expandResponseFiles(std::unique_ptr<CompilationDatabase> Base,llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem> FS)80 expandResponseFiles(std::unique_ptr<CompilationDatabase> Base,
81 llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem> FS) {
82 auto Tokenizer = llvm::Triple(llvm::sys::getProcessTriple()).isOSWindows()
83 ? llvm::cl::TokenizeWindowsCommandLine
84 : llvm::cl::TokenizeGNUCommandLine;
85 return std::make_unique<ExpandResponseFilesDatabase>(
86 std::move(Base), Tokenizer, std::move(FS));
87 }
88
89 } // namespace tooling
90 } // namespace clang
91