Import LLVM 10.0.0 release including clang, lld and lldb.

ok hackroom
tested by plenty

1 files changed, 90 insertions, 0 deletions

diff --git a/gnu/llvm/clang/lib/Tooling/ExpandResponseFilesCompilationDatabase.cpp b/gnu/llvm/clang/lib/Tooling/ExpandResponseFilesCompilationDatabase.cpp
new file mode 100644
index 00000000000..99298316718
--- /dev/null
+++ b/gnu/llvm/clang/lib/Tooling/ExpandResponseFilesCompilationDatabase.cpp
@@ -0,0 +1,90 @@
+//===- ExpandResponseFileCompilationDataBase.cpp --------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang/Tooling/CompilationDatabase.h"
+#include "llvm/ADT/StringRef.h"
+#include "llvm/ADT/Triple.h"
+#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/ConvertUTF.h"
+#include "llvm/Support/ErrorOr.h"
+#include "llvm/Support/MemoryBuffer.h"
+#include "llvm/Support/Path.h"
+#include "llvm/Support/StringSaver.h"
+
+namespace clang {
+namespace tooling {
+namespace {
+
+class ExpandResponseFilesDatabase : public CompilationDatabase {
+public:
+  ExpandResponseFilesDatabase(
+      std::unique_ptr<CompilationDatabase> Base,
+      llvm::cl::TokenizerCallback Tokenizer,
+      llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem> FS)
+      : Base(std::move(Base)), Tokenizer(Tokenizer), FS(std::move(FS)) {
+    assert(this->Base != nullptr);
+    assert(this->Tokenizer != nullptr);
+    assert(this->FS != nullptr);
+  }
+
+  std::vector<std::string> getAllFiles() const override {
+    return Base->getAllFiles();
+  }
+
+  std::vector<CompileCommand>
+  getCompileCommands(StringRef FilePath) const override {
+    return expand(Base->getCompileCommands(FilePath));
+  }
+
+  std::vector<CompileCommand> getAllCompileCommands() const override {
+    return expand(Base->getAllCompileCommands());
+  }
+
+private:
+  std::vector<CompileCommand> expand(std::vector<CompileCommand> Cmds) const {
+    for (auto &Cmd : Cmds) {
+      bool SeenRSPFile = false;
+      llvm::SmallVector<const char *, 20> Argv;
+      Argv.reserve(Cmd.CommandLine.size());
+      for (auto &Arg : Cmd.CommandLine) {
+        Argv.push_back(Arg.c_str());
+        SeenRSPFile |= Arg.front() == '@';
+      }
+      if (!SeenRSPFile)
+        continue;
+      llvm::BumpPtrAllocator Alloc;
+      llvm::StringSaver Saver(Alloc);
+      llvm::cl::ExpandResponseFiles(Saver, Tokenizer, Argv, false, false, *FS,
+                                    llvm::StringRef(Cmd.Directory));
+      // Don't assign directly, Argv aliases CommandLine.
+      std::vector<std::string> ExpandedArgv(Argv.begin(), Argv.end());
+      Cmd.CommandLine = std::move(ExpandedArgv);
+    }
+    return Cmds;
+  }
+
+private:
+  std::unique_ptr<CompilationDatabase> Base;
+  llvm::cl::TokenizerCallback Tokenizer;
+  llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem> FS;
+};
+
+} // namespace
+
+std::unique_ptr<CompilationDatabase>
+expandResponseFiles(std::unique_ptr<CompilationDatabase> Base,
+                    llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem> FS) {
+  auto Tokenizer = llvm::Triple(llvm::sys::getProcessTriple()).isOSWindows()
+                       ? llvm::cl::TokenizeWindowsCommandLine
+                       : llvm::cl::TokenizeGNUCommandLine;
+  return std::make_unique<ExpandResponseFilesDatabase>(
+      std::move(Base), Tokenizer, std::move(FS));
+}
+
+} // namespace tooling
+} // namespace clang