digiaonline /
graphql-php
| Total Complexity | 103 |
| Total Lines | 768 |
| Duplicated Lines | 0 % |
| Changes | 0 | ||
Complex classes like TokenReader often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use TokenReader, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
||
| 7 | class TokenReader implements TokenReaderInterface |
||
| 8 | { |
||
| 9 | |||
| 10 | /** |
||
| 11 | * The lexer owning this token reader. |
||
| 12 | * |
||
| 13 | * @var LexerInterface |
||
| 14 | */ |
||
| 15 | protected $lexer; |
||
| 16 | |||
| 17 | /** |
||
| 18 | * {@inheritdoc} |
||
| 19 | */ |
||
| 20 | public function setLexer(LexerInterface $lexer) |
||
| 21 | { |
||
| 22 | $this->lexer = $lexer; |
||
| 23 | } |
||
| 24 | |||
| 25 | /** |
||
| 26 | * {@inheritdoc} |
||
| 27 | */ |
||
| 28 | public function getLexer(): LexerInterface |
||
| 29 | { |
||
| 30 | return $this->lexer; |
||
| 31 | } |
||
| 32 | |||
| 33 | /** |
||
| 34 | * {@inheritdoc} |
||
| 35 | */ |
||
| 36 | public function read( |
||
| 37 | int $code, |
||
| 38 | int $pos, |
||
| 39 | int $line, |
||
| 40 | int $col, |
||
| 41 | Token $prev |
||
| 42 | ): Token { |
||
| 43 | switch ($code) { |
||
| 44 | case 33: // ! |
||
| 45 | return $this->readBang($code, $pos, $line, $col, $prev); |
||
| 46 | case 35: // # |
||
| 47 | return $this->readComment($code, $pos, $line, $col, $prev); |
||
| 48 | case 36: // $ |
||
| 49 | return $this->readDollar($code, $pos, $line, $col, $prev); |
||
| 50 | case 38: // & |
||
| 51 | return $this->readAmp($code, $pos, $line, $col, $prev); |
||
| 52 | case 58: // : |
||
| 53 | return $this->readColon($code, $pos, $line, $col, $prev); |
||
| 54 | case 61: // = |
||
| 55 | return $this->readEquals($code, $pos, $line, $col, $prev); |
||
| 56 | case 64: // @ |
||
| 57 | return $this->readAt($code, $pos, $line, $col, $prev); |
||
| 58 | case 124: // | |
||
| 59 | return $this->readPipe($code, $pos, $line, $col, $prev); |
||
| 60 | case 40: |
||
| 61 | case 41: // ( or )~ |
||
| 62 | return $this->readParenthesis($code, $pos, $line, $col, $prev); |
||
| 63 | case 91: |
||
| 64 | case 93: // [ or ] |
||
| 65 | return $this->readBracket($code, $pos, $line, $col, $prev); |
||
| 66 | case 123: |
||
| 67 | case 125: // { or } |
||
| 68 | return $this->readBrace($code, $pos, $line, $col, $prev); |
||
| 69 | } |
||
| 70 | |||
| 71 | // Int: -?(0|[1-9][0-9]*) |
||
| 72 | // Float: -?(0|[1-9][0-9]*)(\.[0-9]+)?((E|e)(+|-)?[0-9]+)? |
||
| 73 | if (isNumber($code)) { |
||
| 74 | return $this->readNumber($code, $pos, $line, $col, $prev); |
||
| 75 | } |
||
| 76 | |||
| 77 | if ($this->isLetter($code) || $this->isUnderscore($code)) { |
||
| 78 | return $this->readName($code, $pos, $line, $col, $prev); |
||
| 79 | } |
||
| 80 | |||
| 81 | $body = $this->lexer->getBody(); |
||
| 82 | |||
| 83 | // Spread: ... |
||
| 84 | if ($code === 46 && charCodeAt($body, |
||
| 85 | $pos + 1) === 46 && charCodeAt($body, $pos + 2) === 46) { |
||
| 86 | return $this->readSpread($code, $pos, $line, $col, $prev); |
||
| 87 | } |
||
| 88 | |||
| 89 | // String: "([^"\\\u000A\u000D]|(\\(u[0-9a-fA-F]{4}|["\\/bfnrt])))*" |
||
| 90 | if ($code === 34 && charCodeAt($body, $pos + 1) !== 34) { |
||
| 91 | return $this->readString($code, $pos, $line, $col, $prev); |
||
| 92 | } |
||
| 93 | |||
| 94 | // Block String: """("?"?(\\"""|\\(?!=""")|[^"\\]))*""" |
||
| 95 | if ($this->isTripleQuote($body, $code, $pos)) { |
||
| 96 | return $this->readBlockString($code, $pos, $line, $col, $prev); |
||
| 97 | } |
||
|
|
|||
| 98 | } |
||
| 99 | |||
| 100 | /** |
||
| 101 | * @param int $code |
||
| 102 | * @param int $pos |
||
| 103 | * @param int $line |
||
| 104 | * @param int $col |
||
| 105 | * @param \Digia\GraphQL\Language\Token $prev |
||
| 106 | * |
||
| 107 | * @return \Digia\GraphQL\Language\Token |
||
| 108 | */ |
||
| 109 | protected function readName( |
||
| 110 | int $code, |
||
| 111 | int $pos, |
||
| 112 | int $line, |
||
| 113 | int $col, |
||
| 114 | Token $prev |
||
| 115 | ): Token { |
||
| 116 | $body = $this->lexer->getBody(); |
||
| 117 | $bodyLength = mb_strlen($body); |
||
| 118 | $start = $pos; |
||
| 119 | $pos = $start + 1; |
||
| 120 | |||
| 121 | while ($pos !== $bodyLength && ($code = charCodeAt($body, |
||
| 122 | $pos)) !== null && $this->isAlphaNumeric($code)) { |
||
| 123 | ++$pos; |
||
| 124 | } |
||
| 125 | |||
| 126 | return new Token(TokenKindEnum::NAME, $start, $pos, $line, $col, $prev, |
||
| 127 | sliceString($body, $start, $pos)); |
||
| 128 | } |
||
| 129 | |||
| 130 | /** |
||
| 131 | * @param int $code |
||
| 132 | * @param int $pos |
||
| 133 | * @param int $line |
||
| 134 | * @param int $col |
||
| 135 | * @param \Digia\GraphQL\Language\Token $prev |
||
| 136 | * |
||
| 137 | * @return \Digia\GraphQL\Language\Token |
||
| 138 | * @throws \Digia\GraphQL\Error\SyntaxErrorException |
||
| 139 | */ |
||
| 140 | protected function readBlockString( |
||
| 141 | int $code, |
||
| 142 | int $pos, |
||
| 143 | int $line, |
||
| 144 | int $col, |
||
| 145 | Token $prev |
||
| 146 | ): Token { |
||
| 147 | $body = $this->lexer->getBody(); |
||
| 148 | $bodyLength = mb_strlen($body); |
||
| 149 | $start = $pos; |
||
| 150 | $pos = $start + 3; |
||
| 151 | $chunkStart = $pos; |
||
| 152 | $rawValue = ''; |
||
| 153 | |||
| 154 | while ($pos < $bodyLength && ($code = charCodeAt($body, |
||
| 155 | $pos)) !== null) { |
||
| 156 | // Closing Triple-Quote (""") |
||
| 157 | if ($this->isTripleQuote($body, $code, $pos)) { |
||
| 158 | $rawValue .= sliceString($body, $chunkStart, $pos); |
||
| 159 | |||
| 160 | return new Token( |
||
| 161 | TokenKindEnum::BLOCK_STRING, |
||
| 162 | $start, |
||
| 163 | $pos + 3, |
||
| 164 | $line, |
||
| 165 | $col, |
||
| 166 | $prev, |
||
| 167 | blockStringValue($rawValue) |
||
| 168 | ); |
||
| 169 | } |
||
| 170 | |||
| 171 | if (isSourceCharacter($code)) { |
||
| 172 | throw new SyntaxErrorException( |
||
| 173 | $this->lexer->getSource(), |
||
| 174 | $pos, |
||
| 175 | sprintf('Invalid character within String: %s', |
||
| 176 | printCharCode($code)) |
||
| 177 | ); |
||
| 178 | } |
||
| 179 | |||
| 180 | if ($this->isEscapedTripleQuote($body, $code, $pos)) { |
||
| 181 | $rawValue .= sliceString($body, $chunkStart, $pos) . '"""'; |
||
| 182 | $pos += 4; |
||
| 183 | $chunkStart = $pos; |
||
| 184 | } else { |
||
| 185 | ++$pos; |
||
| 186 | } |
||
| 187 | } |
||
| 188 | |||
| 189 | throw new SyntaxErrorException($this->lexer->getSource(), $pos, |
||
| 190 | 'Unterminated string.'); |
||
| 191 | } |
||
| 192 | |||
| 193 | /** |
||
| 194 | * @param int $code |
||
| 195 | * @param int $pos |
||
| 196 | * @param int $line |
||
| 197 | * @param int $col |
||
| 198 | * @param \Digia\GraphQL\Language\Token $prev |
||
| 199 | * |
||
| 200 | * @return \Digia\GraphQL\Language\Token |
||
| 201 | * @throws \Digia\GraphQL\Error\SyntaxErrorException |
||
| 202 | */ |
||
| 203 | protected function readNumber( |
||
| 204 | int $code, |
||
| 205 | int $pos, |
||
| 206 | int $line, |
||
| 207 | int $col, |
||
| 208 | Token $prev |
||
| 209 | ): Token { |
||
| 210 | $body = $this->lexer->getBody(); |
||
| 211 | $start = $pos; |
||
| 212 | $isFloat = false; |
||
| 213 | |||
| 214 | if ($code === 45) { |
||
| 215 | // - |
||
| 216 | $code = charCodeAt($body, ++$pos); |
||
| 217 | } |
||
| 218 | |||
| 219 | if ($code === 48) { |
||
| 220 | // 0 |
||
| 221 | $code = charCodeAt($body, ++$pos); |
||
| 222 | if (isNumber($code)) { |
||
| 223 | throw new SyntaxErrorException( |
||
| 224 | $this->lexer->getSource(), |
||
| 225 | $pos, |
||
| 226 | sprintf('Invalid number, unexpected digit after 0: %s.', |
||
| 227 | printCharCode($code)) |
||
| 228 | ); |
||
| 229 | } |
||
| 230 | } else { |
||
| 231 | $pos = $this->readDigits($code, $pos); |
||
| 232 | $code = charCodeAt($body, $pos); |
||
| 233 | } |
||
| 234 | |||
| 235 | if ($code === 46) { |
||
| 236 | // . |
||
| 237 | $isFloat = true; |
||
| 238 | $code = charCodeAt($body, ++$pos); |
||
| 239 | $pos = $this->readDigits($code, $pos); |
||
| 240 | $code = charCodeAt($body, $pos); |
||
| 241 | } |
||
| 242 | |||
| 243 | if ($code === 69 || $code === 101) { |
||
| 244 | // e or E |
||
| 245 | $isFloat = true; |
||
| 246 | $code = charCodeAt($body, ++$pos); |
||
| 247 | |||
| 248 | if ($code === 43 || $code === 45) { |
||
| 249 | // + or - |
||
| 250 | $code = charCodeAt($body, ++$pos); |
||
| 251 | } |
||
| 252 | |||
| 253 | $pos = $this->readDigits($code, $pos); |
||
| 254 | } |
||
| 255 | |||
| 256 | return new Token( |
||
| 257 | $isFloat ? TokenKindEnum::FLOAT : TokenKindEnum::INT, |
||
| 258 | $start, |
||
| 259 | $pos, |
||
| 260 | $line, |
||
| 261 | $col, |
||
| 262 | $prev, |
||
| 263 | sliceString($body, $start, $pos) |
||
| 264 | ); |
||
| 265 | } |
||
| 266 | |||
| 267 | /** |
||
| 268 | * @param int $code |
||
| 269 | * @param int $pos |
||
| 270 | * @param int $line |
||
| 271 | * @param int $col |
||
| 272 | * @param \Digia\GraphQL\Language\Token $prev |
||
| 273 | * |
||
| 274 | * @return \Digia\GraphQL\Language\Token |
||
| 275 | * @throws \Digia\GraphQL\Error\SyntaxErrorException |
||
| 276 | */ |
||
| 277 | protected function readString( |
||
| 278 | int $code, |
||
| 279 | int $pos, |
||
| 280 | int $line, |
||
| 281 | int $col, |
||
| 282 | Token $prev |
||
| 283 | ): Token { |
||
| 284 | $body = $this->lexer->getBody(); |
||
| 285 | $bodyLength = mb_strlen($body); |
||
| 286 | $start = $pos; |
||
| 287 | $pos = $start + 1; |
||
| 288 | $chunkStart = $pos; |
||
| 289 | $value = ''; |
||
| 290 | |||
| 291 | while ($pos < $bodyLength && ($code = charCodeAt($body, |
||
| 292 | $pos)) !== null && !$this->isLineTerminator($code)) { |
||
| 293 | // Closing Quote (") |
||
| 294 | if ($code === 34) { |
||
| 295 | $value .= sliceString($body, $chunkStart, $pos); |
||
| 296 | |||
| 297 | return new Token(TokenKindEnum::STRING, $start, $pos + 1, $line, |
||
| 298 | $col, $prev, $value); |
||
| 299 | } |
||
| 300 | |||
| 301 | if ($this->isSourceCharacter($code)) { |
||
| 302 | throw new SyntaxErrorException( |
||
| 303 | $this->lexer->getSource(), |
||
| 304 | $pos, |
||
| 305 | sprintf('Invalid character within String: %s', |
||
| 306 | printCharCode($code)) |
||
| 307 | ); |
||
| 308 | } |
||
| 309 | |||
| 310 | ++$pos; |
||
| 311 | |||
| 312 | if ($code === 92) { |
||
| 313 | // \ |
||
| 314 | $value .= sliceString($body, $chunkStart, $pos + 1); |
||
| 315 | $code = charCodeAt($body, $pos); |
||
| 316 | |||
| 317 | switch ($code) { |
||
| 318 | case 34: |
||
| 319 | $value .= '"'; |
||
| 320 | break; |
||
| 321 | case 47: |
||
| 322 | $value .= '/'; |
||
| 323 | break; |
||
| 324 | case 92: |
||
| 325 | $value .= '\\'; |
||
| 326 | break; |
||
| 327 | case 98: |
||
| 328 | $value .= '\b'; |
||
| 329 | break; |
||
| 330 | case 102: |
||
| 331 | $value .= '\f'; |
||
| 332 | break; |
||
| 333 | case 110: |
||
| 334 | $value .= '\n'; |
||
| 335 | break; |
||
| 336 | case 114: |
||
| 337 | $value .= '\r'; |
||
| 338 | break; |
||
| 339 | case 116: |
||
| 340 | $value .= '\t'; |
||
| 341 | break; |
||
| 342 | case 117: |
||
| 343 | // u |
||
| 344 | $charCode = uniCharCode( |
||
| 345 | charCodeAt($body, $pos + 1), |
||
| 346 | charCodeAt($body, $pos + 2), |
||
| 347 | charCodeAt($body, $pos + 3), |
||
| 348 | charCodeAt($body, $pos + 4) |
||
| 349 | ); |
||
| 350 | if ($charCode < 0) { |
||
| 351 | throw new SyntaxErrorException( |
||
| 352 | $this->lexer->getSource(), |
||
| 353 | $pos, |
||
| 354 | sprintf( |
||
| 355 | 'Invalid character escape sequence: \\u%s', |
||
| 356 | sliceString($body, $pos + 1, $pos + 5) |
||
| 357 | ) |
||
| 358 | ); |
||
| 359 | } |
||
| 360 | $value .= chr($charCode); |
||
| 361 | $pos += 4; |
||
| 362 | break; |
||
| 363 | default: |
||
| 364 | throw new SyntaxErrorException( |
||
| 365 | $this->lexer->getSource(), |
||
| 366 | $pos, |
||
| 367 | sprintf('Invalid character escape sequence: \\%s', |
||
| 368 | chr($code)) |
||
| 369 | ); |
||
| 370 | } |
||
| 371 | |||
| 372 | ++$pos; |
||
| 373 | $chunkStart = $pos; |
||
| 374 | } |
||
| 375 | } |
||
| 376 | |||
| 377 | throw new SyntaxErrorException($this->lexer->getSource(), $pos, |
||
| 378 | 'Unterminated string.'); |
||
| 379 | } |
||
| 380 | |||
| 381 | /** |
||
| 382 | * @param int $code |
||
| 383 | * @param int $pos |
||
| 384 | * @param int $line |
||
| 385 | * @param int $col |
||
| 386 | * @param \Digia\GraphQL\Language\Token $prev |
||
| 387 | * |
||
| 388 | * @return \Digia\GraphQL\Language\Token |
||
| 389 | */ |
||
| 390 | protected function readSpread( |
||
| 391 | int $code, |
||
| 392 | int $pos, |
||
| 393 | int $line, |
||
| 394 | int $col, |
||
| 395 | Token $prev |
||
| 396 | ): Token { |
||
| 397 | return new Token(TokenKindEnum::SPREAD, $pos, $pos + 3, $line, $col, |
||
| 398 | $prev); |
||
| 399 | } |
||
| 400 | |||
| 401 | /** |
||
| 402 | * @param int $code |
||
| 403 | * @param int $pos |
||
| 404 | * @param int $line |
||
| 405 | * @param int $col |
||
| 406 | * @param \Digia\GraphQL\Language\Token $prev |
||
| 407 | * |
||
| 408 | * @return \Digia\GraphQL\Language\Token |
||
| 409 | */ |
||
| 410 | protected function readDollar( |
||
| 411 | int $code, |
||
| 412 | int $pos, |
||
| 413 | int $line, |
||
| 414 | int $col, |
||
| 415 | Token $prev |
||
| 416 | ): Token { |
||
| 417 | return new Token(TokenKindEnum::DOLLAR, $pos, $pos + 1, $line, $col, |
||
| 418 | $prev); |
||
| 419 | } |
||
| 420 | |||
| 421 | /** |
||
| 422 | * @param int $code |
||
| 423 | * @param int $pos |
||
| 424 | * @param int $line |
||
| 425 | * @param int $col |
||
| 426 | * @param \Digia\GraphQL\Language\Token $prev |
||
| 427 | * |
||
| 428 | * @return \Digia\GraphQL\Language\Token |
||
| 429 | */ |
||
| 430 | protected function readPipe( |
||
| 431 | int $code, |
||
| 432 | int $pos, |
||
| 433 | int $line, |
||
| 434 | int $col, |
||
| 435 | Token $prev |
||
| 436 | ): Token { |
||
| 437 | return new Token(TokenKindEnum::PIPE, $pos, $pos + 1, $line, $col, |
||
| 438 | $prev); |
||
| 439 | } |
||
| 440 | |||
| 441 | /** |
||
| 442 | * @param int $code |
||
| 443 | * @param int $pos |
||
| 444 | * @param int $line |
||
| 445 | * @param int $col |
||
| 446 | * @param \Digia\GraphQL\Language\Token $prev |
||
| 447 | * |
||
| 448 | * @return \Digia\GraphQL\Language\Token |
||
| 449 | */ |
||
| 450 | protected function readParenthesis( |
||
| 451 | int $code, |
||
| 452 | int $pos, |
||
| 453 | int $line, |
||
| 454 | int $col, |
||
| 455 | Token $prev |
||
| 456 | ): Token { |
||
| 457 | return $code === 40 |
||
| 458 | ? new Token(TokenKindEnum::PAREN_L, $pos, $pos + 1, $line, $col, |
||
| 459 | $prev) |
||
| 460 | : new Token(TokenKindEnum::PAREN_R, $pos, $pos + 1, $line, $col, |
||
| 461 | $prev); |
||
| 462 | } |
||
| 463 | |||
| 464 | /** |
||
| 465 | * @param int $code |
||
| 466 | * @param int $pos |
||
| 467 | * @param int $line |
||
| 468 | * @param int $col |
||
| 469 | * @param \Digia\GraphQL\Language\Token $prev |
||
| 470 | * |
||
| 471 | * @return \Digia\GraphQL\Language\Token |
||
| 472 | */ |
||
| 473 | protected function readEquals( |
||
| 474 | int $code, |
||
| 475 | int $pos, |
||
| 476 | int $line, |
||
| 477 | int $col, |
||
| 478 | Token $prev |
||
| 479 | ): Token { |
||
| 480 | return new Token(TokenKindEnum::EQUALS, $pos, $pos + 1, $line, $col, |
||
| 481 | $prev); |
||
| 482 | } |
||
| 483 | |||
| 484 | /** |
||
| 485 | * @param int $code |
||
| 486 | * @param int $pos |
||
| 487 | * @param int $line |
||
| 488 | * @param int $col |
||
| 489 | * @param \Digia\GraphQL\Language\Token $prev |
||
| 490 | * |
||
| 491 | * @return \Digia\GraphQL\Language\Token |
||
| 492 | */ |
||
| 493 | protected function readAt( |
||
| 494 | int $code, |
||
| 495 | int $pos, |
||
| 496 | int $line, |
||
| 497 | int $col, |
||
| 498 | Token $prev |
||
| 499 | ): Token { |
||
| 500 | return new Token(TokenKindEnum::AT, $pos, $pos + 1, $line, $col, $prev); |
||
| 501 | } |
||
| 502 | |||
| 503 | /** |
||
| 504 | * @param int $code |
||
| 505 | * @param int $pos |
||
| 506 | * @param int $line |
||
| 507 | * @param int $col |
||
| 508 | * @param \Digia\GraphQL\Language\Token $prev |
||
| 509 | * |
||
| 510 | * @return \Digia\GraphQL\Language\Token |
||
| 511 | */ |
||
| 512 | protected function readComment( |
||
| 513 | int $code, |
||
| 514 | int $pos, |
||
| 515 | int $line, |
||
| 516 | int $col, |
||
| 517 | Token $prev |
||
| 518 | ): Token { |
||
| 519 | $body = $this->lexer->getBody(); |
||
| 520 | $start = $pos; |
||
| 521 | |||
| 522 | do { |
||
| 523 | $code = charCodeAt($body, ++$pos); |
||
| 524 | } while ($code !== null && ($code > 0x001f || $code === 0x0009)); // SourceCharacter but not LineTerminator |
||
| 525 | |||
| 526 | return new Token( |
||
| 527 | TokenKindEnum::COMMENT, |
||
| 528 | $start, |
||
| 529 | $pos, |
||
| 530 | $line, |
||
| 531 | $col, |
||
| 532 | $prev, |
||
| 533 | sliceString($body, $start + 1, $pos) |
||
| 534 | ); |
||
| 535 | } |
||
| 536 | |||
| 537 | /** |
||
| 538 | * @param int $code |
||
| 539 | * @param int $pos |
||
| 540 | * @param int $line |
||
| 541 | * @param int $col |
||
| 542 | * @param \Digia\GraphQL\Language\Token $prev |
||
| 543 | * |
||
| 544 | * @return \Digia\GraphQL\Language\Token |
||
| 545 | */ |
||
| 546 | protected function readColon( |
||
| 547 | int $code, |
||
| 548 | int $pos, |
||
| 549 | int $line, |
||
| 550 | int $col, |
||
| 551 | Token $prev |
||
| 552 | ): Token { |
||
| 553 | return new Token(TokenKindEnum::COLON, $pos, $pos + 1, $line, $col, |
||
| 554 | $prev); |
||
| 555 | } |
||
| 556 | |||
| 557 | /** |
||
| 558 | * @param int $code |
||
| 559 | * @param int $pos |
||
| 560 | * @param int $line |
||
| 561 | * @param int $col |
||
| 562 | * @param \Digia\GraphQL\Language\Token $prev |
||
| 563 | * |
||
| 564 | * @return \Digia\GraphQL\Language\Token |
||
| 565 | */ |
||
| 566 | protected function readAmp( |
||
| 567 | int $code, |
||
| 568 | int $pos, |
||
| 569 | int $line, |
||
| 570 | int $col, |
||
| 571 | Token $prev |
||
| 572 | ): Token { |
||
| 573 | return new Token(TokenKindEnum::AMP, $pos, $pos + 1, $line, $col, |
||
| 574 | $prev); |
||
| 575 | } |
||
| 576 | |||
| 577 | /** |
||
| 578 | * @param int $code |
||
| 579 | * @param int $pos |
||
| 580 | * @param int $line |
||
| 581 | * @param int $col |
||
| 582 | * @param \Digia\GraphQL\Language\Token $prev |
||
| 583 | * |
||
| 584 | * @return \Digia\GraphQL\Language\Token |
||
| 585 | */ |
||
| 586 | protected function readBang( |
||
| 587 | int $code, |
||
| 588 | int $pos, |
||
| 589 | int $line, |
||
| 590 | int $col, |
||
| 591 | Token $prev |
||
| 592 | ): Token { |
||
| 593 | return new Token(TokenKindEnum::BANG, $pos, $pos + 1, $line, $col, |
||
| 594 | $prev); |
||
| 595 | } |
||
| 596 | |||
| 597 | /** |
||
| 598 | * @param int $code |
||
| 599 | * @param int $pos |
||
| 600 | * @param int $line |
||
| 601 | * @param int $col |
||
| 602 | * @param \Digia\GraphQL\Language\Token $prev |
||
| 603 | * |
||
| 604 | * @return \Digia\GraphQL\Language\Token |
||
| 605 | */ |
||
| 606 | protected function readBrace( |
||
| 607 | int $code, |
||
| 608 | int $pos, |
||
| 609 | int $line, |
||
| 610 | int $col, |
||
| 611 | Token $prev |
||
| 612 | ): Token { |
||
| 613 | return $code === 123 |
||
| 614 | ? new Token(TokenKindEnum::BRACE_L, $pos, $pos + 1, $line, $col, |
||
| 615 | $prev) |
||
| 616 | : new Token(TokenKindEnum::BRACE_R, $pos, $pos + 1, $line, $col, |
||
| 617 | $prev); |
||
| 618 | } |
||
| 619 | |||
| 620 | /** |
||
| 621 | * @param int $code |
||
| 622 | * @param int $pos |
||
| 623 | * @param int $line |
||
| 624 | * @param int $col |
||
| 625 | * @param \Digia\GraphQL\Language\Token $prev |
||
| 626 | * |
||
| 627 | * @return \Digia\GraphQL\Language\Token |
||
| 628 | */ |
||
| 629 | protected function readBracket( |
||
| 630 | int $code, |
||
| 631 | int $pos, |
||
| 632 | int $line, |
||
| 633 | int $col, |
||
| 634 | Token $prev |
||
| 635 | ): Token { |
||
| 636 | return $code === 91 |
||
| 637 | ? new Token(TokenKindEnum::BRACKET_L, $pos, $pos + 1, $line, $col, |
||
| 638 | $prev) |
||
| 639 | : new Token(TokenKindEnum::BRACKET_R, $pos, $pos + 1, $line, $col, |
||
| 640 | $prev); |
||
| 641 | } |
||
| 642 | |||
| 643 | /** |
||
| 644 | * @param int $code |
||
| 645 | * @param int $pos |
||
| 646 | * |
||
| 647 | * @return int |
||
| 648 | * @throws SyntaxErrorException |
||
| 649 | */ |
||
| 650 | protected function readDigits(int $code, int $pos): int |
||
| 651 | { |
||
| 652 | $body = $this->lexer->getBody(); |
||
| 653 | |||
| 654 | if (isNumber($code)) { |
||
| 655 | do { |
||
| 656 | $code = charCodeAt($body, ++$pos); |
||
| 657 | } while (isNumber($code)); |
||
| 658 | |||
| 659 | return $pos; |
||
| 660 | } |
||
| 661 | |||
| 662 | throw new SyntaxErrorException( |
||
| 663 | $this->lexer->getSource(), |
||
| 664 | $pos, |
||
| 665 | sprintf('Invalid number, expected digit but got: %s', |
||
| 666 | printCharCode($code)) |
||
| 667 | ); |
||
| 668 | } |
||
| 669 | |||
| 670 | /** |
||
| 671 | * @TODO Move to utils. |
||
| 672 | * |
||
| 673 | * @param int $code |
||
| 674 | * |
||
| 675 | * @return bool |
||
| 676 | */ |
||
| 677 | protected function isLineTerminator(int $code): bool |
||
| 678 | { |
||
| 679 | return $code === 0x000a || $code === 0x000d; |
||
| 680 | } |
||
| 681 | |||
| 682 | /** |
||
| 683 | * @TODO Move to utils. |
||
| 684 | * |
||
| 685 | * @param int $code |
||
| 686 | * |
||
| 687 | * @return bool |
||
| 688 | */ |
||
| 689 | protected function isSourceCharacter(int $code): bool |
||
| 692 | } |
||
| 693 | |||
| 694 | /** |
||
| 695 | * @TODO Move to utils. |
||
| 696 | * |
||
| 697 | * @param string $body |
||
| 698 | * @param int $code |
||
| 699 | * @param int $pos |
||
| 700 | * |
||
| 701 | * @return bool |
||
| 702 | */ |
||
| 703 | protected function isTripleQuote(string $body, int $code, int $pos): bool |
||
| 707 | } |
||
| 708 | |||
| 709 | /** |
||
| 710 | * @TODO Move to utils. |
||
| 711 | * |
||
| 712 | * @param string $body |
||
| 713 | * @param int $code |
||
| 714 | * @param int $pos |
||
| 715 | * |
||
| 716 | * @return bool |
||
| 717 | */ |
||
| 718 | protected function isEscapedTripleQuote( |
||
| 727 | } |
||
| 728 | |||
| 729 | /** |
||
| 730 | * @TODO Move to utils. |
||
| 731 | * |
||
| 732 | * @param int $code |
||
| 733 | * |
||
| 734 | * @return bool |
||
| 735 | */ |
||
| 736 | protected function isLetter(int $code): bool |
||
| 737 | { |
||
| 738 | return ($code >= 65 && $code <= 90) || ($code >= 97 && $code <= 122); // a-z or A-Z |
||
| 739 | } |
||
| 740 | |||
| 741 | /** |
||
| 742 | * @TODO Move to utils. |
||
| 743 | * |
||
| 744 | * @param int $code |
||
| 745 | * |
||
| 746 | * @return bool |
||
| 747 | */ |
||
| 748 | protected function isNumber(int $code): bool |
||
| 749 | { |
||
| 750 | return $code >= 48 && $code <= 57; // 0-9 |
||
| 751 | } |
||
| 752 | |||
| 753 | /** |
||
| 754 | * @TODO Move to utils. |
||
| 755 | * |
||
| 756 | * @param int $code |
||
| 757 | * |
||
| 758 | * @return bool |
||
| 759 | */ |
||
| 760 | protected function isUnderscore(int $code): bool |
||
| 763 | } |
||
| 764 | |||
| 765 | /** |
||
| 766 | * @TODO Move to utils. |
||
| 767 | * |
||
| 768 | * @param int $code |
||
| 769 | * |
||
| 770 | * @return bool |
||
| 771 | */ |
||
| 772 | protected function isAlphaNumeric(int $code): bool |
||
| 775 | } |
||
| 776 | } |
||
| 777 |
Loading history...
For hinted functions/methods where all return statements with the correct type are only reachable via conditions, ?null? gets implicitly returned which may be incompatible with the hinted type. Let?s take a look at an example: