Jason Molenda | 705b180 | 2014-06-13 02:37:02 +0000 | [diff] [blame] | 1 | //===---------------------StructuredData.cpp ---------------------*- C++ -*-===// |
| 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
| 5 | // This file is distributed under the University of Illinois Open Source |
| 6 | // License. See LICENSE.TXT for details. |
| 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | |
| 10 | #include "lldb/Core/StructuredData.h" |
| 11 | |
| 12 | #include <errno.h> |
| 13 | #include <stdlib.h> |
| 14 | #include <inttypes.h> |
| 15 | |
Zachary Turner | 0641ca1 | 2015-03-17 20:04:04 +0000 | [diff] [blame] | 16 | #include "lldb/Core/StreamString.h" |
| 17 | |
Jason Molenda | 705b180 | 2014-06-13 02:37:02 +0000 | [diff] [blame] | 18 | using namespace lldb_private; |
| 19 | |
| 20 | |
| 21 | static StructuredData::ObjectSP read_json_object (const char **ch); |
| 22 | static StructuredData::ObjectSP read_json_array (const char **ch); |
| 23 | |
| 24 | static StructuredData::ObjectSP |
| 25 | read_json_number (const char **ch) |
| 26 | { |
| 27 | StructuredData::ObjectSP object_sp; |
| 28 | while (isspace (**ch)) |
| 29 | (*ch)++; |
| 30 | const char *start_of_number = *ch; |
| 31 | bool is_integer = true; |
| 32 | bool is_float = false; |
| 33 | while (isdigit(**ch) || **ch == '-' || **ch == '.' || **ch == '+' || **ch == 'e' || **ch == 'E') |
| 34 | { |
| 35 | if (isdigit(**ch) == false && **ch != '-') |
| 36 | { |
| 37 | is_integer = false; |
| 38 | is_float = true; |
| 39 | } |
| 40 | (*ch)++; |
| 41 | } |
| 42 | while (isspace (**ch)) |
| 43 | (*ch)++; |
| 44 | if (**ch == ',' || **ch == ']' || **ch == '}') |
| 45 | { |
| 46 | if (is_integer) |
| 47 | { |
| 48 | errno = 0; |
| 49 | uint64_t val = strtoul (start_of_number, NULL, 10); |
| 50 | if (errno == 0) |
| 51 | { |
| 52 | object_sp.reset(new StructuredData::Integer()); |
| 53 | object_sp->GetAsInteger()->SetValue (val); |
| 54 | } |
| 55 | } |
| 56 | if (is_float) |
| 57 | { |
| 58 | char *end_of_number = NULL; |
| 59 | errno = 0; |
| 60 | double val = strtod (start_of_number, &end_of_number); |
| 61 | if (errno == 0 && end_of_number != start_of_number && end_of_number != NULL) |
| 62 | { |
| 63 | object_sp.reset(new StructuredData::Float()); |
| 64 | object_sp->GetAsFloat()->SetValue (val); |
| 65 | } |
| 66 | } |
| 67 | } |
| 68 | return object_sp; |
| 69 | } |
| 70 | |
| 71 | static std::string |
| 72 | read_json_string (const char **ch) |
| 73 | { |
| 74 | std::string string; |
| 75 | if (**ch == '"') |
| 76 | { |
| 77 | (*ch)++; |
| 78 | while (**ch != '\0') |
| 79 | { |
| 80 | if (**ch == '"') |
| 81 | { |
| 82 | (*ch)++; |
| 83 | while (isspace (**ch)) |
| 84 | (*ch)++; |
| 85 | break; |
| 86 | } |
| 87 | else if (**ch == '\\') |
| 88 | { |
| 89 | switch (**ch) |
| 90 | { |
| 91 | case '"': |
| 92 | string.push_back('"'); |
| 93 | *ch += 2; |
| 94 | break; |
| 95 | case '\\': |
| 96 | string.push_back('\\'); |
| 97 | *ch += 2; |
| 98 | break; |
| 99 | case '/': |
| 100 | string.push_back('/'); |
| 101 | *ch += 2; |
| 102 | break; |
| 103 | case 'b': |
| 104 | string.push_back('\b'); |
| 105 | *ch += 2; |
| 106 | break; |
| 107 | case 'f': |
| 108 | string.push_back('\f'); |
| 109 | *ch += 2; |
| 110 | break; |
| 111 | case 'n': |
| 112 | string.push_back('\n'); |
| 113 | *ch += 2; |
| 114 | break; |
| 115 | case 'r': |
| 116 | string.push_back('\r'); |
| 117 | *ch += 2; |
| 118 | break; |
| 119 | case 't': |
| 120 | string.push_back('\t'); |
| 121 | *ch += 2; |
| 122 | break; |
| 123 | case 'u': |
| 124 | // FIXME handle four-hex-digits |
| 125 | *ch += 10; |
| 126 | break; |
| 127 | default: |
| 128 | *ch += 1; |
| 129 | } |
| 130 | } |
| 131 | else |
| 132 | { |
| 133 | string.push_back (**ch); |
| 134 | } |
| 135 | (*ch)++; |
| 136 | } |
| 137 | } |
| 138 | return string; |
| 139 | } |
| 140 | |
| 141 | static StructuredData::ObjectSP |
| 142 | read_json_value (const char **ch) |
| 143 | { |
| 144 | StructuredData::ObjectSP object_sp; |
| 145 | while (isspace (**ch)) |
| 146 | (*ch)++; |
| 147 | |
| 148 | if (**ch == '{') |
| 149 | { |
| 150 | object_sp = read_json_object (ch); |
| 151 | } |
| 152 | else if (**ch == '[') |
| 153 | { |
| 154 | object_sp = read_json_array (ch); |
| 155 | } |
| 156 | else if (**ch == '"') |
| 157 | { |
| 158 | std::string string = read_json_string (ch); |
| 159 | object_sp.reset(new StructuredData::String()); |
| 160 | object_sp->GetAsString()->SetValue(string); |
| 161 | } |
| 162 | else |
| 163 | { |
| 164 | if (strncmp (*ch, "true", 4) == 0) |
| 165 | { |
| 166 | object_sp.reset(new StructuredData::Boolean()); |
| 167 | object_sp->GetAsBoolean()->SetValue(true); |
| 168 | *ch += 4; |
| 169 | } |
| 170 | else if (strncmp (*ch, "false", 5) == 0) |
| 171 | { |
| 172 | object_sp.reset(new StructuredData::Boolean()); |
| 173 | object_sp->GetAsBoolean()->SetValue(false); |
| 174 | *ch += 5; |
| 175 | } |
| 176 | else if (strncmp (*ch, "null", 4) == 0) |
| 177 | { |
| 178 | object_sp.reset(new StructuredData::Null()); |
| 179 | *ch += 4; |
| 180 | } |
| 181 | else |
| 182 | { |
| 183 | object_sp = read_json_number (ch); |
| 184 | } |
| 185 | } |
| 186 | return object_sp; |
| 187 | } |
| 188 | |
| 189 | static StructuredData::ObjectSP |
| 190 | read_json_array (const char **ch) |
| 191 | { |
| 192 | StructuredData::ObjectSP object_sp; |
| 193 | if (**ch == '[') |
| 194 | { |
| 195 | (*ch)++; |
| 196 | while (isspace (**ch)) |
| 197 | (*ch)++; |
| 198 | |
| 199 | bool first_value = true; |
| 200 | while (**ch != '\0' && (first_value || **ch == ',')) |
| 201 | { |
| 202 | if (**ch == ',') |
| 203 | (*ch)++; |
| 204 | first_value = false; |
| 205 | while (isspace (**ch)) |
| 206 | (*ch)++; |
| 207 | lldb_private::StructuredData::ObjectSP value_sp = read_json_value (ch); |
| 208 | if (value_sp) |
| 209 | { |
| 210 | if (object_sp.get() == NULL) |
| 211 | { |
| 212 | object_sp.reset(new StructuredData::Array()); |
| 213 | } |
| 214 | object_sp->GetAsArray()->Push (value_sp); |
| 215 | } |
| 216 | while (isspace (**ch)) |
| 217 | (*ch)++; |
| 218 | } |
| 219 | if (**ch == ']') |
| 220 | { |
| 221 | // FIXME should throw an error if we don't see a } to close out the JSON object |
| 222 | (*ch)++; |
| 223 | while (isspace (**ch)) |
| 224 | (*ch)++; |
| 225 | } |
| 226 | } |
| 227 | return object_sp; |
| 228 | } |
| 229 | |
| 230 | static StructuredData::ObjectSP |
| 231 | read_json_object (const char **ch) |
| 232 | { |
| 233 | StructuredData::ObjectSP object_sp; |
| 234 | if (**ch == '{') |
| 235 | { |
| 236 | (*ch)++; |
| 237 | while (isspace (**ch)) |
| 238 | (*ch)++; |
| 239 | bool first_pair = true; |
| 240 | while (**ch != '\0' && (first_pair || **ch == ',')) |
| 241 | { |
| 242 | first_pair = false; |
| 243 | if (**ch == ',') |
| 244 | (*ch)++; |
| 245 | while (isspace (**ch)) |
| 246 | (*ch)++; |
| 247 | if (**ch != '"') |
| 248 | break; |
| 249 | std::string key_string = read_json_string (ch); |
| 250 | while (isspace (**ch)) |
| 251 | (*ch)++; |
| 252 | if (key_string.size() > 0 && **ch == ':') |
| 253 | { |
| 254 | (*ch)++; |
| 255 | while (isspace (**ch)) |
| 256 | (*ch)++; |
| 257 | lldb_private::StructuredData::ObjectSP value_sp = read_json_value (ch); |
| 258 | if (value_sp.get()) |
| 259 | { |
| 260 | if (object_sp.get() == NULL) |
| 261 | { |
| 262 | object_sp.reset(new StructuredData::Dictionary()); |
| 263 | } |
| 264 | object_sp->GetAsDictionary()->AddItem (key_string.c_str(), value_sp); |
| 265 | } |
| 266 | } |
| 267 | while (isspace (**ch)) |
| 268 | (*ch)++; |
| 269 | } |
| 270 | if (**ch == '}') |
| 271 | { |
| 272 | // FIXME should throw an error if we don't see a } to close out the JSON object |
| 273 | (*ch)++; |
| 274 | while (isspace (**ch)) |
| 275 | (*ch)++; |
| 276 | } |
| 277 | } |
| 278 | return object_sp; |
| 279 | } |
| 280 | |
| 281 | |
| 282 | StructuredData::ObjectSP |
| 283 | StructuredData::ParseJSON (std::string json_text) |
| 284 | { |
| 285 | StructuredData::ObjectSP object_sp; |
| 286 | const size_t json_text_size = json_text.size(); |
| 287 | if (json_text_size > 0) |
| 288 | { |
| 289 | const char *start_of_json_text = json_text.c_str(); |
| 290 | const char *c = json_text.c_str(); |
Saleem Abdulrasool | e8e4ae9 | 2014-06-13 03:30:42 +0000 | [diff] [blame] | 291 | while (*c != '\0' && |
| 292 | static_cast<size_t>(c - start_of_json_text) <= json_text_size) |
Jason Molenda | 705b180 | 2014-06-13 02:37:02 +0000 | [diff] [blame] | 293 | { |
Saleem Abdulrasool | e8e4ae9 | 2014-06-13 03:30:42 +0000 | [diff] [blame] | 294 | while (isspace (*c) && |
| 295 | static_cast<size_t>(c - start_of_json_text) < json_text_size) |
Jason Molenda | 705b180 | 2014-06-13 02:37:02 +0000 | [diff] [blame] | 296 | c++; |
| 297 | if (*c == '{') |
| 298 | { |
| 299 | object_sp = read_json_object (&c); |
| 300 | } |
Greg Clayton | 358cf1e | 2015-06-25 21:46:34 +0000 | [diff] [blame] | 301 | else if (*c == '[') |
| 302 | { |
| 303 | object_sp = read_json_array (&c); |
| 304 | } |
Jason Molenda | 705b180 | 2014-06-13 02:37:02 +0000 | [diff] [blame] | 305 | else |
| 306 | { |
| 307 | // We have bad characters here, this is likely an illegal JSON string. |
| 308 | return object_sp; |
| 309 | } |
| 310 | } |
| 311 | } |
| 312 | return object_sp; |
| 313 | } |
| 314 | |
| 315 | StructuredData::ObjectSP |
| 316 | StructuredData::Object::GetObjectForDotSeparatedPath (llvm::StringRef path) |
| 317 | { |
| 318 | if (this->GetType() == Type::eTypeDictionary) |
| 319 | { |
| 320 | std::pair<llvm::StringRef, llvm::StringRef> match = path.split('.'); |
| 321 | std::string key = match.first.str(); |
| 322 | ObjectSP value = this->GetAsDictionary()->GetValueForKey (key.c_str()); |
| 323 | if (value.get()) |
| 324 | { |
| 325 | // Do we have additional words to descend? If not, return the |
| 326 | // value we're at right now. |
| 327 | if (match.second.empty()) |
| 328 | { |
| 329 | return value; |
| 330 | } |
| 331 | else |
| 332 | { |
| 333 | return value->GetObjectForDotSeparatedPath (match.second); |
| 334 | } |
| 335 | } |
| 336 | return ObjectSP(); |
| 337 | } |
| 338 | |
| 339 | if (this->GetType() == Type::eTypeArray) |
| 340 | { |
| 341 | std::pair<llvm::StringRef, llvm::StringRef> match = path.split('['); |
| 342 | if (match.second.size() == 0) |
| 343 | { |
| 344 | return this->shared_from_this(); |
| 345 | } |
| 346 | errno = 0; |
| 347 | uint64_t val = strtoul (match.second.str().c_str(), NULL, 10); |
| 348 | if (errno == 0) |
| 349 | { |
| 350 | return this->GetAsArray()->GetItemAtIndex(val); |
| 351 | } |
| 352 | return ObjectSP(); |
| 353 | } |
| 354 | |
| 355 | return this->shared_from_this(); |
| 356 | } |
| 357 | |
| 358 | void |
Zachary Turner | 0641ca1 | 2015-03-17 20:04:04 +0000 | [diff] [blame] | 359 | StructuredData::Object::DumpToStdout() const |
| 360 | { |
| 361 | StreamString stream; |
| 362 | Dump(stream); |
Greg Clayton | 66b8294 | 2015-05-27 03:23:26 +0000 | [diff] [blame] | 363 | printf("%s\n", stream.GetString().c_str()); |
Zachary Turner | 0641ca1 | 2015-03-17 20:04:04 +0000 | [diff] [blame] | 364 | } |
| 365 | |
| 366 | void |
| 367 | StructuredData::Array::Dump(Stream &s) const |
Jason Molenda | 705b180 | 2014-06-13 02:37:02 +0000 | [diff] [blame] | 368 | { |
Greg Clayton | 66b8294 | 2015-05-27 03:23:26 +0000 | [diff] [blame] | 369 | bool first = true; |
| 370 | s << "[\n"; |
| 371 | s.IndentMore(); |
| 372 | for (const auto &item_sp : m_items) |
Jason Molenda | 705b180 | 2014-06-13 02:37:02 +0000 | [diff] [blame] | 373 | { |
Greg Clayton | 66b8294 | 2015-05-27 03:23:26 +0000 | [diff] [blame] | 374 | if (first) |
| 375 | first = false; |
| 376 | else |
| 377 | s << ",\n"; |
| 378 | |
| 379 | s.Indent(); |
| 380 | item_sp->Dump(s); |
Jason Molenda | 705b180 | 2014-06-13 02:37:02 +0000 | [diff] [blame] | 381 | } |
Greg Clayton | 66b8294 | 2015-05-27 03:23:26 +0000 | [diff] [blame] | 382 | s.IndentLess(); |
| 383 | s.EOL(); |
| 384 | s.Indent(); |
Jason Molenda | 705b180 | 2014-06-13 02:37:02 +0000 | [diff] [blame] | 385 | s << "]"; |
| 386 | } |
| 387 | |
| 388 | void |
| 389 | StructuredData::Integer::Dump (Stream &s) const |
| 390 | { |
| 391 | s.Printf ("%" PRIu64, m_value); |
| 392 | } |
| 393 | |
| 394 | |
| 395 | void |
| 396 | StructuredData::Float::Dump (Stream &s) const |
| 397 | { |
| 398 | s.Printf ("%lf", m_value); |
| 399 | } |
| 400 | |
| 401 | void |
| 402 | StructuredData::Boolean::Dump (Stream &s) const |
| 403 | { |
| 404 | if (m_value == true) |
| 405 | s.PutCString ("true"); |
| 406 | else |
| 407 | s.PutCString ("false"); |
| 408 | } |
| 409 | |
| 410 | |
| 411 | void |
| 412 | StructuredData::String::Dump (Stream &s) const |
| 413 | { |
| 414 | std::string quoted; |
| 415 | const size_t strsize = m_value.size(); |
| 416 | for (size_t i = 0; i < strsize ; ++i) |
| 417 | { |
| 418 | char ch = m_value[i]; |
| 419 | if (ch == '"') |
| 420 | quoted.push_back ('\\'); |
| 421 | quoted.push_back (ch); |
| 422 | } |
| 423 | s.Printf ("\"%s\"", quoted.c_str()); |
| 424 | } |
| 425 | |
| 426 | void |
| 427 | StructuredData::Dictionary::Dump (Stream &s) const |
| 428 | { |
Greg Clayton | 66b8294 | 2015-05-27 03:23:26 +0000 | [diff] [blame] | 429 | bool first = true; |
| 430 | s << "{\n"; |
| 431 | s.IndentMore(); |
| 432 | for (const auto &pair : m_dict) |
Jason Molenda | 705b180 | 2014-06-13 02:37:02 +0000 | [diff] [blame] | 433 | { |
Greg Clayton | 66b8294 | 2015-05-27 03:23:26 +0000 | [diff] [blame] | 434 | if (first) |
| 435 | first = false; |
Jason Molenda | 705b180 | 2014-06-13 02:37:02 +0000 | [diff] [blame] | 436 | else |
Greg Clayton | 66b8294 | 2015-05-27 03:23:26 +0000 | [diff] [blame] | 437 | s << ",\n"; |
| 438 | s.Indent(); |
| 439 | s << "\"" << pair.first.AsCString() << "\" : "; |
| 440 | pair.second->Dump(s); |
Jason Molenda | 705b180 | 2014-06-13 02:37:02 +0000 | [diff] [blame] | 441 | } |
Greg Clayton | 66b8294 | 2015-05-27 03:23:26 +0000 | [diff] [blame] | 442 | s.IndentLess(); |
| 443 | s.EOL(); |
| 444 | s.Indent(); |
Jason Molenda | 705b180 | 2014-06-13 02:37:02 +0000 | [diff] [blame] | 445 | s << "}"; |
| 446 | } |
| 447 | |
| 448 | void |
| 449 | StructuredData::Null::Dump (Stream &s) const |
| 450 | { |
| 451 | s << "null"; |
| 452 | } |
Zachary Turner | 0641ca1 | 2015-03-17 20:04:04 +0000 | [diff] [blame] | 453 | |
| 454 | void |
| 455 | StructuredData::Generic::Dump(Stream &s) const |
| 456 | { |
| 457 | s << "0x" << m_object; |
| 458 | } |