18 #include "llvm/ADT/Optional.h" 19 #include "llvm/ADT/STLExtras.h" 20 #include "llvm/ADT/SmallString.h" 21 #include "llvm/ADT/SmallVector.h" 22 #include "llvm/ADT/StringRef.h" 23 #include "llvm/ADT/Triple.h" 24 #include "llvm/Support/Allocator.h" 25 #include "llvm/Support/Casting.h" 26 #include "llvm/Support/CommandLine.h" 27 #include "llvm/Support/ErrorOr.h" 28 #include "llvm/Support/Host.h" 29 #include "llvm/Support/MemoryBuffer.h" 30 #include "llvm/Support/Path.h" 31 #include "llvm/Support/StringSaver.h" 32 #include "llvm/Support/YAMLParser.h" 33 #include "llvm/Support/raw_ostream.h" 37 #include <system_error> 42 using namespace clang;
43 using namespace tooling;
51 class CommandLineArgumentParser {
53 CommandLineArgumentParser(StringRef CommandLine)
54 : Input(CommandLine), Position(Input.begin()-1) {}
56 std::vector<std::string> parse() {
57 bool HasMoreInput =
true;
58 while (HasMoreInput && nextNonWhitespace()) {
60 HasMoreInput = parseStringInto(Argument);
61 CommandLine.push_back(Argument);
69 bool parseStringInto(std::string &String) {
71 if (*Position ==
'"') {
72 if (!parseDoubleQuotedStringInto(String))
return false;
73 }
else if (*Position ==
'\'') {
74 if (!parseSingleQuotedStringInto(String))
return false;
76 if (!parseFreeStringInto(String))
return false;
78 }
while (*Position !=
' ');
82 bool parseDoubleQuotedStringInto(std::string &String) {
83 if (!next())
return false;
84 while (*Position !=
'"') {
85 if (!skipEscapeCharacter())
return false;
86 String.push_back(*Position);
87 if (!next())
return false;
92 bool parseSingleQuotedStringInto(std::string &String) {
93 if (!next())
return false;
94 while (*Position !=
'\'') {
95 String.push_back(*Position);
96 if (!next())
return false;
101 bool parseFreeStringInto(std::string &String) {
103 if (!skipEscapeCharacter())
return false;
104 String.push_back(*Position);
105 if (!next())
return false;
106 }
while (*Position !=
' ' && *Position !=
'"' && *Position !=
'\'');
110 bool skipEscapeCharacter() {
111 if (*Position ==
'\\') {
117 bool nextNonWhitespace() {
119 if (!next())
return false;
120 }
while (*Position ==
' ');
126 return Position != Input.end();
129 const StringRef Input;
130 StringRef::iterator Position;
131 std::vector<std::string> CommandLine;
135 StringRef EscapedCommandLine) {
138 llvm::Triple Triple(llvm::sys::getProcessTriple());
139 if (Triple.getOS() == llvm::Triple::OSType::Win32) {
142 if (!Triple.hasEnvironment() ||
143 Triple.getEnvironment() == llvm::Triple::EnvironmentType::MSVC)
149 llvm::BumpPtrAllocator Alloc;
150 llvm::StringSaver Saver(Alloc);
152 llvm::cl::TokenizeWindowsCommandLine(EscapedCommandLine, Saver, T);
153 std::vector<std::string> Result(T.begin(), T.end());
157 CommandLineArgumentParser parser(EscapedCommandLine);
158 return parser.parse();
164 std::unique_ptr<CompilationDatabase>
165 loadFromDirectory(StringRef Directory, std::string &ErrorMessage)
override {
167 llvm::sys::path::append(JSONDatabasePath,
"compile_commands.json");
180 static CompilationDatabasePluginRegistry::Add<JSONCompilationDatabasePlugin>
181 X(
"json-compilation-database",
"Reads JSON formatted compilation databases");
193 std::unique_ptr<JSONCompilationDatabase>
195 std::string &ErrorMessage,
198 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> DatabaseBuffer =
199 llvm::MemoryBuffer::getFile(FilePath, -1,
202 if (std::error_code Result = DatabaseBuffer.getError()) {
203 ErrorMessage =
"Error while opening JSON database: " + Result.message();
206 std::unique_ptr<JSONCompilationDatabase> Database(
208 if (!Database->parse(ErrorMessage))
213 std::unique_ptr<JSONCompilationDatabase>
215 std::string &ErrorMessage,
217 std::unique_ptr<llvm::MemoryBuffer> DatabaseBuffer(
218 llvm::MemoryBuffer::getMemBuffer(DatabaseString));
219 std::unique_ptr<JSONCompilationDatabase> Database(
221 if (!Database->parse(ErrorMessage))
226 std::vector<CompileCommand>
229 llvm::sys::path::native(FilePath, NativeFilePath);
232 llvm::raw_string_ostream ES(Error);
233 StringRef Match = MatchTrie.findEquivalent(NativeFilePath, ES);
236 const auto CommandsRefI = IndexByFile.find(Match);
237 if (CommandsRefI == IndexByFile.end())
239 std::vector<CompileCommand> Commands;
240 getCommands(CommandsRefI->getValue(), Commands);
244 std::vector<std::string>
246 std::vector<std::string> Result;
247 for (
const auto &CommandRef : IndexByFile)
248 Result.push_back(CommandRef.first().str());
252 std::vector<CompileCommand>
254 std::vector<CompileCommand> Commands;
255 getCommands(AllCommands, Commands);
260 Name.consume_back(
".exe");
273 if (Wrapper ==
"distcc" || Wrapper ==
"gomacc" || Wrapper ==
"ccache") {
286 (Args[1][0] !=
'-') &&
289 Args.erase(Args.begin());
297 static std::vector<std::string>
299 const std::vector<llvm::yaml::ScalarNode *> &
Nodes) {
301 std::vector<std::string> Arguments;
302 if (Nodes.size() == 1)
303 Arguments = unescapeCommandLine(Syntax, Nodes[0]->
getValue(Storage));
305 for (
const auto *
Node : Nodes)
306 Arguments.push_back(
Node->getValue(Storage));
313 void JSONCompilationDatabase::getCommands(
315 std::vector<CompileCommand> &Commands)
const {
316 for (
const auto &CommandRef : CommandsRef) {
320 auto Output = std::get<3>(CommandRef);
321 Commands.emplace_back(
322 std::get<0>(CommandRef)->
getValue(DirectoryStorage),
323 std::get<1>(CommandRef)->
getValue(FilenameStorage),
325 Output ? Output->getValue(OutputStorage) :
"");
329 bool JSONCompilationDatabase::parse(std::string &ErrorMessage) {
330 llvm::yaml::document_iterator I = YAMLStream.begin();
331 if (I == YAMLStream.end()) {
332 ErrorMessage =
"Error while parsing YAML.";
337 ErrorMessage =
"Error while parsing YAML.";
340 auto *Array = dyn_cast<llvm::yaml::SequenceNode>(Root);
342 ErrorMessage =
"Expected array.";
345 for (
auto &NextObject : *Array) {
346 auto *Object = dyn_cast<llvm::yaml::MappingNode>(&NextObject);
348 ErrorMessage =
"Expected object.";
351 llvm::yaml::ScalarNode *Directory =
nullptr;
353 llvm::yaml::ScalarNode *File =
nullptr;
354 llvm::yaml::ScalarNode *Output =
nullptr;
355 for (
auto& NextKeyValue : *Object) {
356 auto *KeyString = dyn_cast<llvm::yaml::ScalarNode>(NextKeyValue.getKey());
358 ErrorMessage =
"Expected strings as key.";
362 StringRef KeyValue = KeyString->getValue(KeyStorage);
365 ErrorMessage =
"Expected value.";
368 auto *ValueString = dyn_cast<llvm::yaml::ScalarNode>(
Value);
369 auto *SequenceString = dyn_cast<llvm::yaml::SequenceNode>(
Value);
370 if (KeyValue ==
"arguments" && !SequenceString) {
371 ErrorMessage =
"Expected sequence as value.";
373 }
else if (KeyValue !=
"arguments" && !ValueString) {
374 ErrorMessage =
"Expected string as value.";
377 if (KeyValue ==
"directory") {
378 Directory = ValueString;
379 }
else if (KeyValue ==
"arguments") {
380 Command = std::vector<llvm::yaml::ScalarNode *>();
381 for (
auto &Argument : *SequenceString) {
382 auto *Scalar = dyn_cast<llvm::yaml::ScalarNode>(&Argument);
384 ErrorMessage =
"Only strings are allowed in 'arguments'.";
387 Command->push_back(Scalar);
389 }
else if (KeyValue ==
"command") {
391 Command = std::vector<llvm::yaml::ScalarNode *>(1, ValueString);
392 }
else if (KeyValue ==
"file") {
394 }
else if (KeyValue ==
"output") {
395 Output = ValueString;
397 ErrorMessage = (
"Unknown key: \"" +
398 KeyString->getRawValue() +
"\"").str();
403 ErrorMessage =
"Missing key: \"file\".";
407 ErrorMessage =
"Missing key: \"command\" or \"arguments\".";
411 ErrorMessage =
"Missing key: \"directory\".";
415 StringRef FileName = File->getValue(FileStorage);
417 if (llvm::sys::path::is_relative(FileName)) {
420 Directory->getValue(DirectoryStorage));
421 llvm::sys::path::append(AbsolutePath, FileName);
422 llvm::sys::path::remove_dots(AbsolutePath,
true);
423 llvm::sys::path::native(AbsolutePath, NativeFilePath);
425 llvm::sys::path::native(FileName, NativeFilePath);
427 auto Cmd = CompileCommandRef(Directory, File, *Command, Output);
428 IndexByFile[NativeFilePath].push_back(
Cmd);
429 AllCommands.push_back(
Cmd);
430 MatchTrie.insert(NativeFilePath);
BoundNodesTreeBuilder Nodes
static llvm::StringRef stripExecutableExtension(llvm::StringRef Name)
Forward-declares and imports various common LLVM datatypes that clang wants to use unqualified...
static SVal getValue(SVal val, SValBuilder &svalBuilder)
static bool unwrapCommand(std::vector< std::string > &Args)
ast_type_traits::DynTypedNode Node
Dataflow Directional Tag Classes.
static std::vector< std::string > nodeToCommandLine(JSONCommandLineSyntax Syntax, const std::vector< llvm::yaml::ScalarNode *> &Nodes)