18 #include "llvm/ADT/SmallString.h" 19 #include "llvm/Support/Allocator.h" 20 #include "llvm/Support/CommandLine.h" 21 #include "llvm/Support/Path.h" 22 #include "llvm/Support/StringSaver.h" 23 #include <system_error> 34 class CommandLineArgumentParser {
36 CommandLineArgumentParser(StringRef CommandLine)
37 : Input(CommandLine), Position(Input.begin()-1) {}
39 std::vector<std::string> parse() {
40 bool HasMoreInput =
true;
41 while (HasMoreInput && nextNonWhitespace()) {
43 HasMoreInput = parseStringInto(Argument);
44 CommandLine.push_back(Argument);
52 bool parseStringInto(std::string &String) {
54 if (*Position ==
'"') {
55 if (!parseDoubleQuotedStringInto(String))
return false;
56 }
else if (*Position ==
'\'') {
57 if (!parseSingleQuotedStringInto(String))
return false;
59 if (!parseFreeStringInto(String))
return false;
61 }
while (*Position !=
' ');
65 bool parseDoubleQuotedStringInto(std::string &String) {
66 if (!next())
return false;
67 while (*Position !=
'"') {
68 if (!skipEscapeCharacter())
return false;
69 String.push_back(*Position);
70 if (!next())
return false;
75 bool parseSingleQuotedStringInto(std::string &String) {
76 if (!next())
return false;
77 while (*Position !=
'\'') {
78 String.push_back(*Position);
79 if (!next())
return false;
84 bool parseFreeStringInto(std::string &String) {
86 if (!skipEscapeCharacter())
return false;
87 String.push_back(*Position);
88 if (!next())
return false;
89 }
while (*Position !=
' ' && *Position !=
'"' && *Position !=
'\'');
93 bool skipEscapeCharacter() {
94 if (*Position ==
'\\') {
100 bool nextNonWhitespace() {
102 if (!next())
return false;
103 }
while (*Position ==
' ');
109 return Position != Input.end();
112 const StringRef Input;
113 StringRef::iterator Position;
114 std::vector<std::string> CommandLine;
118 StringRef EscapedCommandLine) {
121 llvm::Triple Triple(llvm::sys::getProcessTriple());
122 if (Triple.getOS() == llvm::Triple::OSType::Win32) {
125 if (!Triple.hasEnvironment() ||
126 Triple.getEnvironment() == llvm::Triple::EnvironmentType::MSVC)
132 llvm::BumpPtrAllocator Alloc;
133 llvm::StringSaver Saver(Alloc);
135 llvm::cl::TokenizeWindowsCommandLine(EscapedCommandLine, Saver, T);
136 std::vector<std::string> Result(T.begin(), T.end());
140 CommandLineArgumentParser parser(EscapedCommandLine);
141 return parser.parse();
144 class JSONCompilationDatabasePlugin :
public CompilationDatabasePlugin {
145 std::unique_ptr<CompilationDatabase>
146 loadFromDirectory(StringRef Directory, std::string &ErrorMessage)
override {
147 SmallString<1024> JSONDatabasePath(Directory);
148 llvm::sys::path::append(JSONDatabasePath,
"compile_commands.json");
158 static CompilationDatabasePluginRegistry::Add<JSONCompilationDatabasePlugin>
159 X(
"json-compilation-database",
"Reads JSON formatted compilation databases");
165 std::unique_ptr<JSONCompilationDatabase>
167 std::string &ErrorMessage,
169 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> DatabaseBuffer =
170 llvm::MemoryBuffer::getFile(FilePath);
171 if (std::error_code Result = DatabaseBuffer.getError()) {
172 ErrorMessage =
"Error while opening JSON database: " + Result.message();
175 std::unique_ptr<JSONCompilationDatabase> Database(
177 if (!Database->parse(ErrorMessage))
182 std::unique_ptr<JSONCompilationDatabase>
184 std::string &ErrorMessage,
186 std::unique_ptr<llvm::MemoryBuffer> DatabaseBuffer(
187 llvm::MemoryBuffer::getMemBuffer(DatabaseString));
188 std::unique_ptr<JSONCompilationDatabase> Database(
190 if (!Database->parse(ErrorMessage))
195 std::vector<CompileCommand>
198 llvm::sys::path::native(FilePath, NativeFilePath);
201 llvm::raw_string_ostream ES(Error);
202 StringRef Match = MatchTrie.findEquivalent(NativeFilePath, ES);
204 return std::vector<CompileCommand>();
205 llvm::StringMap< std::vector<CompileCommandRef> >::const_iterator
206 CommandsRefI = IndexByFile.find(Match);
207 if (CommandsRefI == IndexByFile.end())
208 return std::vector<CompileCommand>();
209 std::vector<CompileCommand> Commands;
210 getCommands(CommandsRefI->getValue(), Commands);
214 std::vector<std::string>
216 std::vector<std::string> Result;
218 llvm::StringMap< std::vector<CompileCommandRef> >::const_iterator
219 CommandsRefI = IndexByFile.begin();
220 const llvm::StringMap< std::vector<CompileCommandRef> >::const_iterator
221 CommandsRefEnd = IndexByFile.end();
222 for (; CommandsRefI != CommandsRefEnd; ++CommandsRefI) {
223 Result.push_back(CommandsRefI->first().str());
229 std::vector<CompileCommand>
231 std::vector<CompileCommand> Commands;
232 getCommands(AllCommands, Commands);
236 static std::vector<std::string>
238 const std::vector<llvm::yaml::ScalarNode *> &
Nodes) {
240 if (Nodes.size() == 1) {
241 return unescapeCommandLine(Syntax, Nodes[0]->
getValue(Storage));
243 std::vector<std::string> Arguments;
244 for (
auto *
Node : Nodes) {
245 Arguments.push_back(
Node->getValue(Storage));
250 void JSONCompilationDatabase::getCommands(
252 std::vector<CompileCommand> &Commands)
const {
253 for (
int I = 0, E = CommandsRef.size(); I != E; ++I) {
257 auto Output = std::get<3>(CommandsRef[I]);
258 Commands.emplace_back(
259 std::get<0>(CommandsRef[I])->
getValue(DirectoryStorage),
260 std::get<1>(CommandsRef[I])->
getValue(FilenameStorage),
262 Output ? Output->getValue(OutputStorage) :
"");
266 bool JSONCompilationDatabase::parse(std::string &ErrorMessage) {
267 llvm::yaml::document_iterator I = YAMLStream.begin();
268 if (I == YAMLStream.end()) {
269 ErrorMessage =
"Error while parsing YAML.";
274 ErrorMessage =
"Error while parsing YAML.";
277 llvm::yaml::SequenceNode *Array = dyn_cast<llvm::yaml::SequenceNode>(Root);
279 ErrorMessage =
"Expected array.";
282 for (
auto& NextObject : *Array) {
283 llvm::yaml::MappingNode *Object = dyn_cast<llvm::yaml::MappingNode>(&NextObject);
285 ErrorMessage =
"Expected object.";
288 llvm::yaml::ScalarNode *Directory =
nullptr;
290 llvm::yaml::ScalarNode *File =
nullptr;
291 llvm::yaml::ScalarNode *Output =
nullptr;
292 for (
auto& NextKeyValue : *Object) {
293 llvm::yaml::ScalarNode *KeyString =
294 dyn_cast<llvm::yaml::ScalarNode>(NextKeyValue.getKey());
296 ErrorMessage =
"Expected strings as key.";
300 StringRef KeyValue = KeyString->getValue(KeyStorage);
303 ErrorMessage =
"Expected value.";
306 llvm::yaml::ScalarNode *ValueString =
307 dyn_cast<llvm::yaml::ScalarNode>(
Value);
308 llvm::yaml::SequenceNode *SequenceString =
309 dyn_cast<llvm::yaml::SequenceNode>(
Value);
310 if (KeyValue ==
"arguments" && !SequenceString) {
311 ErrorMessage =
"Expected sequence as value.";
313 }
else if (KeyValue !=
"arguments" && !ValueString) {
314 ErrorMessage =
"Expected string as value.";
317 if (KeyValue ==
"directory") {
318 Directory = ValueString;
319 }
else if (KeyValue ==
"arguments") {
320 Command = std::vector<llvm::yaml::ScalarNode *>();
321 for (
auto &Argument : *SequenceString) {
322 auto Scalar = dyn_cast<llvm::yaml::ScalarNode>(&Argument);
324 ErrorMessage =
"Only strings are allowed in 'arguments'.";
327 Command->push_back(Scalar);
329 }
else if (KeyValue ==
"command") {
331 Command = std::vector<llvm::yaml::ScalarNode *>(1, ValueString);
332 }
else if (KeyValue ==
"file") {
334 }
else if (KeyValue ==
"output") {
335 Output = ValueString;
337 ErrorMessage = (
"Unknown key: \"" +
338 KeyString->getRawValue() +
"\"").str();
343 ErrorMessage =
"Missing key: \"file\".";
347 ErrorMessage =
"Missing key: \"command\" or \"arguments\".";
351 ErrorMessage =
"Missing key: \"directory\".";
355 StringRef FileName = File->getValue(FileStorage);
357 if (llvm::sys::path::is_relative(FileName)) {
360 Directory->getValue(DirectoryStorage));
361 llvm::sys::path::append(AbsolutePath, FileName);
362 llvm::sys::path::native(AbsolutePath, NativeFilePath);
364 llvm::sys::path::native(FileName, NativeFilePath);
366 auto Cmd = CompileCommandRef(Directory, File, *Command, Output);
367 IndexByFile[NativeFilePath].push_back(Cmd);
368 AllCommands.push_back(Cmd);
369 MatchTrie.insert(NativeFilePath);
BoundNodesTreeBuilder Nodes
const FunctionProtoType * T
static SVal getValue(SVal val, SValBuilder &svalBuilder)
ast_type_traits::DynTypedNode Node
Dataflow Directional Tag Classes.