lh123 updated this revision to Diff 230756.
lh123 added a comment.
Expand response files before `inferMissingCompileCommands` and
`inferTargetAndDriverMode`
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D70222/new/
https://reviews.llvm.org/D70222
Files:
clang/include/clang/Tooling/CompilationDatabase.h
clang/lib/Tooling/CMakeLists.txt
clang/lib/Tooling/CompilationDatabase.cpp
clang/lib/Tooling/ExpandResponseFilesCompilationDatabase.cpp
clang/lib/Tooling/JSONCompilationDatabase.cpp
clang/unittests/Tooling/CompilationDatabaseTest.cpp
Index: clang/unittests/Tooling/CompilationDatabaseTest.cpp
===================================================================
--- clang/unittests/Tooling/CompilationDatabaseTest.cpp
+++ clang/unittests/Tooling/CompilationDatabaseTest.cpp
@@ -17,6 +17,7 @@
#include "llvm/Support/TargetSelect.h"
#include "gmock/gmock.h"
#include "gtest/gtest.h"
+#include <fstream>
namespace clang {
namespace tooling {
@@ -859,5 +860,76 @@
"clang++ --driver-mode=g++ bar.cpp -D bar.cpp");
}
+class ExpandResponseFilesTest : public MemDBTest {
+protected:
+ void SetUp() override {
+ InnerDir = path(StringRef("inner"));
+ std::error_code EC = llvm::sys::fs::create_directory(InnerDir);
+ EXPECT_TRUE(!EC);
+
+ llvm::sys::path::append(RspFileName1, InnerDir, "rsp1.rsp");
+ std::ofstream RspFile1(RspFileName1.c_str());
+ RspFile1 << "-Dflag1";
+ RspFile1.close();
+
+ RspFileName2 = path(StringRef("rsp2.rsp"));
+ std::ofstream RspFile2(RspFileName2.c_str());
+ RspFile2 << "-Dflag2 @rsp3.rsp";
+ RspFile2.close();
+
+ RspFileName3 = path(StringRef("rsp3.rsp"));
+ std::ofstream RspFile3(RspFileName3.c_str());
+ RspFile3 << "-Dflag3";
+ RspFile3.close();
+
+ RspFileName4 = path(StringRef("rsp4.rsp"));
+ std::ofstream RspFile4(RspFileName4.c_str());
+ RspFile4 << "-Dflag4 @rsp4.rsp";
+ RspFile4.close();
+
+ llvm::sys::path::append(RspFileName5, InnerDir, "rsp5.rsp");
+ std::ofstream RspFile5(RspFileName5.c_str());
+ RspFile5 << "-Dflag5 @inner/rsp1.rsp";
+ RspFile5.close();
+ }
+
+ void TearDown() override {
+ llvm::sys::fs::remove(RspFileName5);
+ llvm::sys::fs::remove(RspFileName4);
+ llvm::sys::fs::remove(RspFileName3);
+ llvm::sys::fs::remove(RspFileName2);
+ llvm::sys::fs::remove(RspFileName1);
+ llvm::sys::fs::remove(InnerDir);
+ }
+
+ std::string getCommand(llvm::StringRef F) {
+ auto Results = expandResponseFiles(std::make_unique<MemCDB>(Entries))
+ ->getCompileCommands(path(F));
+ if (Results.empty()) {
+ return "none";
+ }
+ return llvm::join(Results[0].CommandLine, " ");
+ }
+
+ SmallString<128> InnerDir;
+ SmallString<128> RspFileName1;
+ SmallString<128> RspFileName2;
+ SmallString<128> RspFileName3;
+ SmallString<128> RspFileName4;
+ SmallString<128> RspFileName5;
+};
+
+TEST_F(ExpandResponseFilesTest, ExpandResponseFiles) {
+ // clang-format off
+ add("foo.cpp", "clang",
+ ("@inner/rsp1.rsp @rsp2.rsp @rsp4.rsp "
+ "@" + RspFileName1 + " @inner/rsp5.rsp @rsp6.rsp")
+ .str());
+ // clang-format on
+ EXPECT_EQ(getCommand("foo.cpp"), "clang foo.cpp -D foo.cpp -Dflag1 -Dflag2 "
+ "-Dflag3 -Dflag4 @rsp4.rsp -Dflag1 "
+ "-Dflag5 -Dflag1 @rsp6.rsp");
+}
+
} // end namespace tooling
} // end namespace clang
Index: clang/lib/Tooling/JSONCompilationDatabase.cpp
===================================================================
--- clang/lib/Tooling/JSONCompilationDatabase.cpp
+++ clang/lib/Tooling/JSONCompilationDatabase.cpp
@@ -167,8 +167,8 @@
llvm::sys::path::append(JSONDatabasePath, "compile_commands.json");
auto Base = JSONCompilationDatabase::loadFromFile(
JSONDatabasePath, ErrorMessage, JSONCommandLineSyntax::AutoDetect);
- return Base ? inferTargetAndDriverMode(
- inferMissingCompileCommands(std::move(Base)))
+ return Base ? inferTargetAndDriverMode(inferMissingCompileCommands(
+ expandResponseFiles(std::move(Base))))
: nullptr;
}
};
Index: clang/lib/Tooling/ExpandResponseFilesCompilationDatabase.cpp
===================================================================
--- /dev/null
+++ clang/lib/Tooling/ExpandResponseFilesCompilationDatabase.cpp
@@ -0,0 +1,192 @@
+//===- 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/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 {
+
+bool expandResponseFile(llvm::StringRef FName, llvm::StringSaver &Saver,
+ llvm::cl::TokenizerCallback Tokenizer,
+ SmallVectorImpl<const char *> &NewArgv) {
+ llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> MemBufOrErr =
+ llvm::MemoryBuffer::getFile(FName);
+ if (!MemBufOrErr)
+ return false;
+ llvm::MemoryBuffer &MemBuf = *MemBufOrErr.get();
+ StringRef Str(MemBuf.getBufferStart(), MemBuf.getBufferSize());
+
+ // If we have a UTF-16 byte order mark, convert to UTF-8 for parsing.
+ ArrayRef<char> BufRef(MemBuf.getBufferStart(), MemBuf.getBufferEnd());
+ std::string UTF8Buf;
+ // It is called byte order marker but the UTF-8 BOM is actually not affected
+ // by the host system's endianness.
+ auto HasUtF8ByteOrderMark = [](ArrayRef<char> S) {
+ return (S.size() >= 3 && S[0] == '\xef' && S[1] == '\xbb' &&
+ S[2] == '\xbf');
+ };
+ if (llvm::hasUTF16ByteOrderMark(BufRef)) {
+ if (!convertUTF16ToUTF8String(BufRef, UTF8Buf))
+ return false;
+ Str = StringRef(UTF8Buf);
+ }
+ // If we see UTF-8 BOM sequence at the beginning of a file, we shall remove
+ // these bytes before parsing.
+ // Reference: http://en.wikipedia.org/wiki/UTF-8#Byte_order_mark
+ else if (HasUtF8ByteOrderMark(BufRef))
+ Str = StringRef(BufRef.data() + 3, BufRef.size() - 3);
+ // Tokenize the contents into NewArgv.
+ Tokenizer(Str, Saver, NewArgv, false);
+ return true;
+}
+
+bool expandResponseFiles(tooling::CompileCommand &Cmd,
+ llvm::cl::TokenizerCallback Tokenizer) {
+ bool AllExpanded = true;
+ struct ResponseFileRecord {
+ llvm::SmallString<128> File;
+ size_t End;
+ };
+ std::vector<std::string> &Argv = Cmd.CommandLine;
+ // To detect recursive response files, we maintain a stack of files and the
+ // position of the last argument in the file. This position is updated
+ // dynamically as we recursively expand files.
+ SmallVector<ResponseFileRecord, 3> FileStack;
+
+ // Push a dummy entry that represents the initial command line, removing
+ // the need to check for an empty list.
+ FileStack.push_back({llvm::StringRef(""), Argv.size()});
+
+ // Don't cache Argv.size() because it can change.
+ for (unsigned I = 0; I != Argv.size();) {
+ while (I == FileStack.back().End) {
+ // Passing the end of a file's argument list, so we can remove it from the
+ // stack.
+ FileStack.pop_back();
+ }
+
+ std::string &Arg = Argv[I];
+
+ if (Arg[0] != '@') {
+ ++I;
+ continue;
+ }
+ SmallString<128> ResponseFile;
+ if (llvm::sys::path::is_relative(&Arg[1])) {
+ llvm::sys::path::append(ResponseFile, Cmd.Directory, &Arg[1]);
+ } else {
+ ResponseFile.append(Arg.begin() + 1, Arg.end());
+ }
+ llvm::sys::path::remove_dots(ResponseFile, true);
+ llvm::sys::path::native(ResponseFile);
+
+ auto IsEquivalent = [ResponseFile](const ResponseFileRecord &RFile) {
+ return llvm::sys::fs::equivalent(RFile.File, ResponseFile);
+ };
+
+ // Check for recursive response files.
+ if (std::any_of(FileStack.begin() + 1, FileStack.end(), IsEquivalent)) {
+ // This file is recursive, so we leave it in the argument stream and
+ // move on.
+ AllExpanded = false;
+ ++I;
+ continue;
+ }
+
+ // Replace this response file argument with the tokenization of its
+ // contents. Nested response files are expanded in subsequent iterations.
+ SmallVector<const char *, 0> ExpandedArgv;
+ llvm::BumpPtrAllocator Alloc;
+ llvm::StringSaver Saver(Alloc);
+ llvm::SmallVector<const char *, 64> T;
+ if (!expandResponseFile(ResponseFile, Saver, Tokenizer, ExpandedArgv)) {
+ // We couldn't read this file, so we leave it in the argument stream and
+ // move on.
+ AllExpanded = false;
+ ++I;
+ continue;
+ }
+
+ for (ResponseFileRecord &Record : FileStack) {
+ // Increase the end of all active records by the number of newly expanded
+ // arguments, minus the response file itself.
+ Record.End += ExpandedArgv.size() - 1;
+ }
+
+ FileStack.push_back({ResponseFile, I + ExpandedArgv.size()});
+ Argv.erase(Argv.begin() + I);
+ Argv.insert(Argv.begin() + I, ExpandedArgv.begin(), ExpandedArgv.end());
+ }
+
+ // If successful, the top of the file stack will mark the end of the Argv
+ // stream. A failure here indicates a bug in the stack popping logic above.
+ // Note that FileStack may have more than one element at this point because we
+ // don't have a chance to pop the stack when encountering recursive files at
+ // the end of the stream, so seeing that doesn't indicate a bug.
+ assert(FileStack.size() > 0 && Argv.size() == FileStack.back().End);
+ return AllExpanded;
+}
+
+class ExpandResponseFilesDatabase : public CompilationDatabase {
+public:
+ ExpandResponseFilesDatabase(std::unique_ptr<CompilationDatabase> Base,
+ llvm::cl::TokenizerCallback Tokenizer)
+ : Base(std::move(Base)), Tokenizer(Tokenizer) {
+ assert(this->Base != 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) {
+ expandResponseFiles(Cmd, Tokenizer);
+ }
+ return Cmds;
+ }
+
+private:
+ std::unique_ptr<CompilationDatabase> Base;
+ llvm::cl::TokenizerCallback Tokenizer;
+};
+
+} // namespace
+
+std::unique_ptr<CompilationDatabase>
+expandResponseFiles(std::unique_ptr<CompilationDatabase> Base,
+ llvm::cl::TokenizerCallback Tokenizer) {
+ if (Tokenizer == nullptr) {
+ Tokenizer = llvm::Triple(llvm::sys::getProcessTriple()).isOSWindows()
+ ? llvm::cl::TokenizeWindowsCommandLine
+ : llvm::cl::TokenizeGNUCommandLine;
+ }
+ return std::make_unique<ExpandResponseFilesDatabase>(std::move(Base),
+ Tokenizer);
+}
+
+} // namespace tooling
+} // namespace clang
Index: clang/lib/Tooling/CompilationDatabase.cpp
===================================================================
--- clang/lib/Tooling/CompilationDatabase.cpp
+++ clang/lib/Tooling/CompilationDatabase.cpp
@@ -399,7 +399,9 @@
loadFromDirectory(StringRef Directory, std::string &ErrorMessage) override {
SmallString<1024> DatabasePath(Directory);
llvm::sys::path::append(DatabasePath, "compile_flags.txt");
- return FixedCompilationDatabase::loadFromFile(DatabasePath, ErrorMessage);
+ auto Base =
+ FixedCompilationDatabase::loadFromFile(DatabasePath, ErrorMessage);
+ return Base ? expandResponseFiles(std::move(Base)) : nullptr;
}
};
Index: clang/lib/Tooling/CMakeLists.txt
===================================================================
--- clang/lib/Tooling/CMakeLists.txt
+++ clang/lib/Tooling/CMakeLists.txt
@@ -17,6 +17,7 @@
CommonOptionsParser.cpp
CompilationDatabase.cpp
Execution.cpp
+ ExpandResponseFilesCompilationDatabase.cpp
FileMatchTrie.cpp
FixIt.cpp
GuessTargetAndModeCompilationDatabase.cpp
Index: clang/include/clang/Tooling/CompilationDatabase.h
===================================================================
--- clang/include/clang/Tooling/CompilationDatabase.h
+++ clang/include/clang/Tooling/CompilationDatabase.h
@@ -31,6 +31,7 @@
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/ADT/Twine.h"
+#include "llvm/Support/CommandLine.h"
#include <memory>
#include <string>
#include <utility>
@@ -219,6 +220,15 @@
std::unique_ptr<CompilationDatabase>
inferTargetAndDriverMode(std::unique_ptr<CompilationDatabase> Base);
+/// Returns a wrapped CompilationDatabase that will expand all response files on
+/// commandline returned by underlying database.
+///
+/// \param [in] Tokenizer Tokenization strategy. Typically Unix, Windows or
+/// nullptr. use nullptr for auto detect.
+std::unique_ptr<CompilationDatabase>
+expandResponseFiles(std::unique_ptr<CompilationDatabase> Base,
+ llvm::cl::TokenizerCallback Tokenizer = nullptr);
+
} // namespace tooling
} // namespace clang
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