Algo-Web /
POData
| Total Complexity | 93 |
| Total Lines | 804 |
| Duplicated Lines | 0 % |
| Changes | 4 | ||
| Bugs | 0 | Features | 0 |
Complex classes like ExpressionParser 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 ExpressionParser, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
||
| 39 | class ExpressionParser |
||
| 40 | { |
||
| 41 | const RECURSION_LIMIT = 200; |
||
| 42 | |||
| 43 | /** |
||
| 44 | * The Lexical analyzer. |
||
| 45 | * |
||
| 46 | * @var ExpressionLexer |
||
| 47 | */ |
||
| 48 | private $lexer; |
||
| 49 | |||
| 50 | /** |
||
| 51 | * The current recursion depth. |
||
| 52 | * |
||
| 53 | * @var int |
||
| 54 | */ |
||
| 55 | private $recursionDepth; |
||
| 56 | |||
| 57 | /** |
||
| 58 | * The ResourceType on which $filter condition needs to be applied. |
||
| 59 | * |
||
| 60 | * @var ResourceType |
||
| 61 | */ |
||
| 62 | private $resourceType; |
||
| 63 | |||
| 64 | /** |
||
| 65 | * @var bool |
||
| 66 | */ |
||
| 67 | private $isPHPExpressionProvider; |
||
| 68 | |||
| 69 | /** |
||
| 70 | * True if the filter expression contains level 2 property access, for example |
||
| 71 | * Customers?$filter=Address/LineNumber eq 12 |
||
| 72 | * Customer?$filter=Order/OrderID gt 1234 |
||
| 73 | * False otherwise. |
||
| 74 | * |
||
| 75 | * @var bool |
||
| 76 | */ |
||
| 77 | private $hasLevel2PropertyInTheExpression; |
||
| 78 | |||
| 79 | /** |
||
| 80 | * Construct a new instance of ExpressionParser. |
||
| 81 | * |
||
| 82 | * @param string $text The expression to parse |
||
| 83 | * @param ResourceType $resourceType The resource type of the resource targeted by the resource path |
||
| 84 | * @param bool $isPHPExpressionProvider |
||
| 85 | * |
||
| 86 | * TODO Expression parser should not depend on the fact that end user is implementing IExpressionProvider or not |
||
| 87 | * @throws ODataException |
||
| 88 | */ |
||
| 89 | public function __construct($text, ResourceType $resourceType, $isPHPExpressionProvider) |
||
| 90 | { |
||
| 91 | $this->lexer = new ExpressionLexer($text); |
||
| 92 | $this->resourceType = $resourceType; |
||
| 93 | $this->isPHPExpressionProvider = $isPHPExpressionProvider; |
||
| 94 | $this->hasLevel2PropertyInTheExpression = false; |
||
| 95 | } |
||
| 96 | |||
| 97 | /** |
||
| 98 | * Checks whether the expression contains level 2 property access. |
||
| 99 | * |
||
| 100 | * @return bool |
||
| 101 | */ |
||
| 102 | public function hasLevel2Property() |
||
| 103 | { |
||
| 104 | return $this->hasLevel2PropertyInTheExpression; |
||
| 105 | } |
||
| 106 | |||
| 107 | /** |
||
| 108 | * Get the current token from lexer. |
||
| 109 | * |
||
| 110 | * @return ExpressionToken |
||
| 111 | */ |
||
| 112 | private function getCurrentToken() |
||
| 113 | { |
||
| 114 | return $this->getLexer()->getCurrentToken(); |
||
| 115 | } |
||
| 116 | |||
| 117 | /** |
||
| 118 | * Set the current token in lexer. |
||
| 119 | * |
||
| 120 | * @param ExpressionToken $token The token to set as current token |
||
| 121 | */ |
||
| 122 | private function setCurrentToken(ExpressionToken $token) |
||
| 123 | { |
||
| 124 | $this->getLexer()->setCurrentToken($token); |
||
| 125 | } |
||
| 126 | |||
| 127 | /** |
||
| 128 | * Resets parser with new expression string. |
||
| 129 | * |
||
| 130 | * @param string $text Reset the expression to parse |
||
| 131 | * @throws ODataException |
||
| 132 | */ |
||
| 133 | public function resetParser($text) |
||
| 134 | { |
||
| 135 | $this->lexer = new ExpressionLexer($text); |
||
| 136 | $this->recursionDepth = 0; |
||
| 137 | } |
||
| 138 | |||
| 139 | /** |
||
| 140 | * Parse the expression in filter option. |
||
| 141 | * |
||
| 142 | * @throws NotImplementedException |
||
| 143 | * @throws ODataException |
||
| 144 | * @throws \ReflectionException |
||
| 145 | * @return AbstractExpression |
||
| 146 | */ |
||
| 147 | public function parseFilter() |
||
| 148 | { |
||
| 149 | return $this->parseExpression(); |
||
| 150 | } |
||
| 151 | |||
| 152 | /** |
||
| 153 | * Start parsing the expression. |
||
| 154 | * |
||
| 155 | * @throws NotImplementedException |
||
| 156 | * @throws ODataException |
||
| 157 | * @throws \ReflectionException |
||
| 158 | * @return AbstractExpression |
||
| 159 | */ |
||
| 160 | private function parseExpression() |
||
| 161 | { |
||
| 162 | $this->recurseEnter(); |
||
| 163 | $expr = $this->parseLogicalOr(); |
||
| 164 | $this->recurseLeave(); |
||
| 165 | |||
| 166 | return $expr; |
||
| 167 | } |
||
| 168 | |||
| 169 | /** |
||
| 170 | * Parse logical or (or). |
||
| 171 | * |
||
| 172 | * @throws NotImplementedException |
||
| 173 | * @throws ODataException |
||
| 174 | * @throws \ReflectionException |
||
| 175 | * @return AbstractExpression |
||
| 176 | */ |
||
| 177 | private function parseLogicalOr() |
||
| 178 | { |
||
| 179 | $this->recurseEnter(); |
||
| 180 | $left = $this->parseLogicalAnd(); |
||
| 181 | while ($this->tokenIdentifierIs(/* @scrutinizer ignore-type */ODataConstants::KEYWORD_OR)) { |
||
| 182 | $logicalOpToken = clone $this->getCurrentToken(); |
||
| 183 | $this->getLexer()->nextToken(); |
||
| 184 | $right = $this->parseLogicalAnd(); |
||
| 185 | FunctionDescription::verifyLogicalOpArguments($logicalOpToken, $left, $right); |
||
| 186 | $left = new LogicalExpression( |
||
| 187 | $left, |
||
| 188 | $right, |
||
| 189 | ExpressionType::OR_LOGICAL() |
||
| 190 | ); |
||
| 191 | } |
||
| 192 | |||
| 193 | $this->recurseLeave(); |
||
| 194 | |||
| 195 | return $left; |
||
| 196 | } |
||
| 197 | |||
| 198 | /** |
||
| 199 | * Parse logical and (and). |
||
| 200 | * |
||
| 201 | * @throws NotImplementedException |
||
| 202 | * @throws ODataException |
||
| 203 | * @throws \ReflectionException |
||
| 204 | * @return AbstractExpression |
||
| 205 | */ |
||
| 206 | private function parseLogicalAnd() |
||
| 207 | { |
||
| 208 | $this->recurseEnter(); |
||
| 209 | $left = $this->parseComparison(); |
||
| 210 | while ($this->tokenIdentifierIs(/* @scrutinizer ignore-type */ODataConstants::KEYWORD_AND)) { |
||
| 211 | $logicalOpToken = clone $this->getCurrentToken(); |
||
| 212 | $this->getLexer()->nextToken(); |
||
| 213 | $right = $this->parseComparison(); |
||
| 214 | FunctionDescription::verifyLogicalOpArguments($logicalOpToken, $left, $right); |
||
| 215 | $left = new LogicalExpression($left, $right, ExpressionType::AND_LOGICAL()); |
||
| 216 | } |
||
| 217 | |||
| 218 | $this->recurseLeave(); |
||
| 219 | |||
| 220 | return $left; |
||
| 221 | } |
||
| 222 | |||
| 223 | /** |
||
| 224 | * Parse comparison operation (eq, ne, gt, ge, lt, le). |
||
| 225 | * |
||
| 226 | * @throws NotImplementedException |
||
| 227 | * @throws ODataException |
||
| 228 | * @throws \ReflectionException |
||
| 229 | * @return AbstractExpression |
||
| 230 | */ |
||
| 231 | private function parseComparison() |
||
| 232 | { |
||
| 233 | $this->recurseEnter(); |
||
| 234 | $left = $this->parseAdditive(); |
||
| 235 | while ($this->getCurrentToken()->isComparisonOperator()) { |
||
| 236 | $comparisonToken = clone $this->getCurrentToken(); |
||
| 237 | $this->getLexer()->nextToken(); |
||
| 238 | $right = $this->parseAdditive(); |
||
| 239 | $left = self::generateComparisonExpression( |
||
| 240 | $left, |
||
| 241 | $right, |
||
| 242 | $comparisonToken, |
||
| 243 | $this->isPHPExpressionProvider |
||
| 244 | ); |
||
| 245 | } |
||
| 246 | |||
| 247 | $this->recurseLeave(); |
||
| 248 | |||
| 249 | return $left; |
||
| 250 | } |
||
| 251 | |||
| 252 | /** |
||
| 253 | * Parse additive operation (add, sub). |
||
| 254 | * |
||
| 255 | * @throws NotImplementedException |
||
| 256 | * @throws ODataException |
||
| 257 | * @throws \ReflectionException |
||
| 258 | * @return AbstractExpression |
||
| 259 | */ |
||
| 260 | private function parseAdditive() |
||
| 261 | { |
||
| 262 | $this->recurseEnter(); |
||
| 263 | $left = $this->parseMultiplicative(); |
||
| 264 | while ($this->getCurrentToken()->identifierIs(/* @scrutinizer ignore-type */ODataConstants::KEYWORD_ADD) |
||
| 265 | || $this->getCurrentToken()->identifierIs(/* @scrutinizer ignore-type */ODataConstants::KEYWORD_SUB)) { |
||
| 266 | $additiveToken = clone $this->getCurrentToken(); |
||
| 267 | $this->getLexer()->nextToken(); |
||
| 268 | $right = $this->parseMultiplicative(); |
||
| 269 | $opReturnType = FunctionDescription::verifyAndPromoteArithmeticOpArguments($additiveToken, $left, $right); |
||
| 270 | if ($additiveToken->identifierIs(/* @scrutinizer ignore-type */ODataConstants::KEYWORD_ADD)) { |
||
| 271 | $left = new ArithmeticExpression($left, $right, ExpressionType::ADD(), $opReturnType); |
||
| 272 | } else { |
||
| 273 | $left = new ArithmeticExpression($left, $right, ExpressionType::SUBTRACT(), $opReturnType); |
||
| 274 | } |
||
| 275 | } |
||
| 276 | |||
| 277 | $this->recurseLeave(); |
||
| 278 | |||
| 279 | return $left; |
||
| 280 | } |
||
| 281 | |||
| 282 | /** |
||
| 283 | * Parse multiplicative operators (mul, div, mod). |
||
| 284 | * |
||
| 285 | * @throws NotImplementedException |
||
| 286 | * @throws ODataException |
||
| 287 | * @throws \ReflectionException |
||
| 288 | * @return AbstractExpression |
||
| 289 | */ |
||
| 290 | private function parseMultiplicative() |
||
| 291 | { |
||
| 292 | $this->recurseEnter(); |
||
| 293 | $left = $this->parseUnary(); |
||
| 294 | while ($this->getCurrentToken()->identifierIs(/* @scrutinizer ignore-type */ODataConstants::KEYWORD_MULTIPLY) |
||
| 295 | || $this->getCurrentToken()->identifierIs(/* @scrutinizer ignore-type */ODataConstants::KEYWORD_DIVIDE) |
||
| 296 | || $this->getCurrentToken()->identifierIs(/* @scrutinizer ignore-type */ODataConstants::KEYWORD_MODULO) |
||
| 297 | ) { |
||
| 298 | $multiplicativeToken = clone $this->getCurrentToken(); |
||
| 299 | $this->getLexer()->nextToken(); |
||
| 300 | $right = $this->parseUnary(); |
||
| 301 | $opReturnType = FunctionDescription::verifyAndPromoteArithmeticOpArguments( |
||
| 302 | $multiplicativeToken, |
||
| 303 | $left, |
||
| 304 | $right |
||
| 305 | ); |
||
| 306 | if ($multiplicativeToken->identifierIs(/* @scrutinizer ignore-type */ODataConstants::KEYWORD_MULTIPLY)) { |
||
| 307 | $left = new ArithmeticExpression($left, $right, ExpressionType::MULTIPLY(), $opReturnType); |
||
| 308 | } elseif ($multiplicativeToken->identifierIs(/* @scrutinizer ignore-type */ODataConstants::KEYWORD_DIVIDE)) { |
||
| 309 | $left = new ArithmeticExpression($left, $right, ExpressionType::DIVIDE(), $opReturnType); |
||
| 310 | } else { |
||
| 311 | $left = new ArithmeticExpression($left, $right, ExpressionType::MODULO(), $opReturnType); |
||
| 312 | } |
||
| 313 | } |
||
| 314 | |||
| 315 | $this->recurseLeave(); |
||
| 316 | |||
| 317 | return $left; |
||
| 318 | } |
||
| 319 | |||
| 320 | /** |
||
| 321 | * Parse unary operator (- ,not). |
||
| 322 | * |
||
| 323 | * @throws NotImplementedException |
||
| 324 | * @throws ODataException |
||
| 325 | * @throws \ReflectionException |
||
| 326 | * @return AbstractExpression |
||
| 327 | */ |
||
| 328 | private function parseUnary() |
||
| 329 | { |
||
| 330 | $this->recurseEnter(); |
||
| 331 | |||
| 332 | if ($this->getCurrentToken()->getId() == ExpressionTokenId::MINUS() |
||
| 333 | || $this->getCurrentToken()->identifierIs(/* @scrutinizer ignore-type */ODataConstants::KEYWORD_NOT) |
||
| 334 | ) { |
||
| 335 | $op = clone $this->getCurrentToken(); |
||
| 336 | $this->getLexer()->nextToken(); |
||
| 337 | if ($op->getId() == ExpressionTokenId::MINUS() |
||
| 338 | && (ExpressionLexer::isNumeric($this->getCurrentToken()->getId())) |
||
| 339 | ) { |
||
| 340 | $numberLiteral = $this->getCurrentToken(); |
||
| 341 | $numberLiteral->Text = '-' . $numberLiteral->Text; |
||
| 342 | $numberLiteral->Position = $op->Position; |
||
| 343 | $this->setCurrentToken($numberLiteral); |
||
| 344 | $this->recurseLeave(); |
||
| 345 | |||
| 346 | return $this->parsePrimary(); |
||
| 347 | } |
||
| 348 | |||
| 349 | $expr = $this->parsePrimary(); |
||
| 350 | FunctionDescription::validateUnaryOpArguments($op, $expr); |
||
| 351 | if ($op->getId() == ExpressionTokenId::MINUS()) { |
||
| 352 | $expr = new UnaryExpression($expr, ExpressionType::NEGATE(), $expr->getType()); |
||
| 353 | } else { |
||
| 354 | $expr = new UnaryExpression($expr, ExpressionType::NOT_LOGICAL(), new Boolean()); |
||
| 355 | } |
||
| 356 | |||
| 357 | $this->recurseLeave(); |
||
| 358 | |||
| 359 | return $expr; |
||
| 360 | } |
||
| 361 | |||
| 362 | $this->recurseLeave(); |
||
| 363 | |||
| 364 | return $this->parsePrimary(); |
||
| 365 | } |
||
| 366 | |||
| 367 | /** |
||
| 368 | * Start parsing the primary. |
||
| 369 | * |
||
| 370 | * @throws NotImplementedException |
||
| 371 | * @throws ODataException |
||
| 372 | * @throws \ReflectionException |
||
| 373 | * @return AbstractExpression |
||
| 374 | */ |
||
| 375 | private function parsePrimary() |
||
| 376 | { |
||
| 377 | $this->recurseEnter(); |
||
| 378 | $expr = $this->parsePrimaryStart(); |
||
| 379 | while (true) { |
||
| 380 | if ($this->getCurrentToken()->getId() == ExpressionTokenId::SLASH()) { |
||
| 381 | $this->getLexer()->nextToken(); |
||
| 382 | $expr = $this->parsePropertyAccess($expr); |
||
| 383 | } else { |
||
| 384 | break; |
||
| 385 | } |
||
| 386 | } |
||
| 387 | |||
| 388 | $this->recurseLeave(); |
||
| 389 | |||
| 390 | return $expr; |
||
| 391 | } |
||
| 392 | |||
| 393 | /** |
||
| 394 | * Parse primary tokens [literals, identifiers (e.g. function call), open param for sub expressions]. |
||
| 395 | * |
||
| 396 | * @throws ODataException |
||
| 397 | * @throws NotImplementedException |
||
| 398 | * @throws \ReflectionException |
||
| 399 | * @return AbstractExpression |
||
| 400 | */ |
||
| 401 | private function parsePrimaryStart() |
||
| 402 | { |
||
| 403 | switch ($this->getLexer()->getCurrentToken()->getId()) { |
||
| 404 | case ExpressionTokenId::BOOLEAN_LITERAL(): |
||
| 405 | return $this->parseTypedLiteral(new Boolean()); |
||
| 406 | case ExpressionTokenId::DATETIME_LITERAL(): |
||
| 407 | return $this->parseTypedLiteral(new DateTime()); |
||
| 408 | case ExpressionTokenId::DECIMAL_LITERAL(): |
||
| 409 | return $this->parseTypedLiteral(new Decimal()); |
||
| 410 | case ExpressionTokenId::NULL_LITERAL(): |
||
| 411 | return $this->parseNullLiteral(); |
||
| 412 | case ExpressionTokenId::IDENTIFIER(): |
||
| 413 | return $this->parseIdentifier(); |
||
| 414 | case ExpressionTokenId::STRING_LITERAL(): |
||
| 415 | return $this->parseTypedLiteral(new StringType()); |
||
| 416 | case ExpressionTokenId::INT64_LITERAL(): |
||
| 417 | return $this->parseTypedLiteral(new Int64()); |
||
| 418 | case ExpressionTokenId::INTEGER_LITERAL(): |
||
| 419 | return $this->parseTypedLiteral(new Int32()); |
||
| 420 | case ExpressionTokenId::DOUBLE_LITERAL(): |
||
| 421 | return $this->parseTypedLiteral(new Double()); |
||
| 422 | case ExpressionTokenId::SINGLE_LITERAL(): |
||
| 423 | return $this->parseTypedLiteral(new Single()); |
||
| 424 | case ExpressionTokenId::GUID_LITERAL(): |
||
| 425 | return $this->parseTypedLiteral(new Guid()); |
||
| 426 | case ExpressionTokenId::BINARY_LITERAL(): |
||
| 427 | throw new NotImplementedException( |
||
| 428 | 'Support for binary is not implemented' |
||
| 429 | ); |
||
| 430 | //return $this->parseTypedLiteral(new Binary()); |
||
| 431 | case ExpressionTokenId::OPENPARAM(): |
||
| 432 | return $this->parseParenExpression(); |
||
| 433 | default: |
||
| 434 | throw ODataException::createSyntaxError('Expression expected.'); |
||
| 435 | } |
||
| 436 | } |
||
| 437 | |||
| 438 | /** |
||
| 439 | * Parse Sub expression. |
||
| 440 | * |
||
| 441 | * @throws ODataException |
||
| 442 | * @throws NotImplementedException |
||
| 443 | * @throws \ReflectionException |
||
| 444 | * @return AbstractExpression |
||
| 445 | */ |
||
| 446 | private function parseParenExpression() |
||
| 447 | { |
||
| 448 | if ($this->getCurrentToken()->getId() != ExpressionTokenId::OPENPARAM()) { |
||
| 449 | throw ODataException::createSyntaxError('Open parenthesis expected.'); |
||
| 450 | } |
||
| 451 | |||
| 452 | $this->getLexer()->nextToken(); |
||
| 453 | $expr = $this->parseExpression(); |
||
| 454 | if ($this->getCurrentToken()->getId() != ExpressionTokenId::CLOSEPARAM()) { |
||
| 455 | throw ODataException::createSyntaxError('Close parenthesis expected.'); |
||
| 456 | } |
||
| 457 | |||
| 458 | $this->getLexer()->nextToken(); |
||
| 459 | |||
| 460 | return $expr; |
||
| 461 | } |
||
| 462 | |||
| 463 | /** |
||
| 464 | * Parse an identifier. |
||
| 465 | * |
||
| 466 | * @throws ODataException |
||
| 467 | * @throws NotImplementedException |
||
| 468 | * @throws \ReflectionException |
||
| 469 | * @return FunctionCallExpression|PropertyAccessExpression |
||
| 470 | */ |
||
| 471 | private function parseIdentifier() |
||
| 472 | { |
||
| 473 | $this->validateToken(ExpressionTokenId::IDENTIFIER()); |
||
| 474 | |||
| 475 | // An open paren here would indicate calling a method |
||
| 476 | $identifierIsFunction = $this->getLexer()->peekNextToken()->getId() == ExpressionTokenId::OPENPARAM(); |
||
| 477 | if ($identifierIsFunction) { |
||
| 478 | return $this->parseIdentifierAsFunction(); |
||
| 479 | } else { |
||
| 480 | return $this->parsePropertyAccess(null); |
||
| 481 | } |
||
| 482 | } |
||
| 483 | |||
| 484 | /** |
||
| 485 | * Parse a property access. |
||
| 486 | * |
||
| 487 | * @param PropertyAccessExpression|null $parentExpression Parent expression |
||
| 488 | * |
||
| 489 | * @throws ODataException |
||
| 490 | * @throws \ReflectionException |
||
| 491 | * |
||
| 492 | * @return PropertyAccessExpression |
||
| 493 | */ |
||
| 494 | private function parsePropertyAccess(PropertyAccessExpression $parentExpression = null) |
||
| 495 | { |
||
| 496 | $identifier = $this->getCurrentToken()->getIdentifier(); |
||
| 497 | if (null === $parentExpression) { |
||
| 498 | $parentResourceType = $this->resourceType; |
||
| 499 | } else { |
||
| 500 | $parentResourceType = $parentExpression->getResourceType(); |
||
| 501 | $this->hasLevel2PropertyInTheExpression = true; |
||
| 502 | } |
||
| 503 | |||
| 504 | $resourceProperty = $parentResourceType->resolveProperty($identifier); |
||
| 505 | if (null === $resourceProperty) { |
||
| 506 | throw ODataException::createSyntaxError( |
||
| 507 | Messages::expressionLexerNoPropertyInType( |
||
| 508 | $identifier, |
||
| 509 | $parentResourceType->getFullName(), |
||
| 510 | $this->getCurrentToken()->Position |
||
| 511 | ) |
||
| 512 | ); |
||
| 513 | } |
||
| 514 | |||
| 515 | if ($resourceProperty->getKind() == ResourcePropertyKind::RESOURCESET_REFERENCE) { |
||
|
introduced
by
|
|||
| 516 | throw ODataException::createSyntaxError( |
||
| 517 | Messages::expressionParserEntityCollectionNotAllowedInFilter( |
||
| 518 | $resourceProperty->getName(), |
||
| 519 | $parentResourceType->getFullName(), |
||
| 520 | $this->getCurrentToken()->Position |
||
| 521 | ) |
||
| 522 | ); |
||
| 523 | } |
||
| 524 | |||
| 525 | $exp = new PropertyAccessExpression($resourceProperty, $parentExpression); |
||
| 526 | $this->getLexer()->nextToken(); |
||
| 527 | |||
| 528 | return $exp; |
||
| 529 | } |
||
| 530 | |||
| 531 | /** |
||
| 532 | * Try to parse an identifier which is followed by an open bracket as an astoria URI function call. |
||
| 533 | * |
||
| 534 | * @throws ODataException |
||
| 535 | * @throws NotImplementedException |
||
| 536 | * @throws \ReflectionException |
||
| 537 | * |
||
| 538 | * @return FunctionCallExpression |
||
| 539 | */ |
||
| 540 | private function parseIdentifierAsFunction() |
||
| 541 | { |
||
| 542 | $functionToken = clone $this->getCurrentToken(); |
||
| 543 | $functions = FunctionDescription::verifyFunctionExists($functionToken); |
||
| 544 | $this->getLexer()->nextToken(); |
||
| 545 | $paramExpressions = $this->parseArgumentList(); |
||
| 546 | $function = FunctionDescription::verifyFunctionCallOpArguments( |
||
| 547 | $functions, |
||
| 548 | $paramExpressions, |
||
| 549 | $functionToken |
||
| 550 | ); |
||
| 551 | |||
| 552 | return new FunctionCallExpression($function, $paramExpressions); |
||
| 553 | } |
||
| 554 | |||
| 555 | /** |
||
| 556 | * Start parsing argument list of a function-call. |
||
| 557 | * |
||
| 558 | * @throws ODataException |
||
| 559 | * @throws NotImplementedException |
||
| 560 | * @throws \ReflectionException |
||
| 561 | * @return array<AbstractExpression> |
||
| 562 | */ |
||
| 563 | private function parseArgumentList() |
||
| 564 | { |
||
| 565 | if ($this->getCurrentToken()->getId() != ExpressionTokenId::OPENPARAM()) { |
||
| 566 | throw ODataException::createSyntaxError('Open parenthesis expected.'); |
||
| 567 | } |
||
| 568 | |||
| 569 | $this->getLexer()->nextToken(); |
||
| 570 | $args = $this->getCurrentToken()->getId() != ExpressionTokenId::CLOSEPARAM() |
||
| 571 | ? $this->parseArguments() : []; |
||
| 572 | if ($this->getCurrentToken()->getId() != ExpressionTokenId::CLOSEPARAM()) { |
||
| 573 | throw ODataException::createSyntaxError('Close parenthesis expected.'); |
||
| 574 | } |
||
| 575 | |||
| 576 | $this->getLexer()->nextToken(); |
||
| 577 | |||
| 578 | return $args; |
||
| 579 | } |
||
| 580 | |||
| 581 | /** |
||
| 582 | * Parse arguments of a function-call. |
||
| 583 | * |
||
| 584 | * @throws ODataException |
||
| 585 | * @throws NotImplementedException |
||
| 586 | * @throws \ReflectionException |
||
| 587 | * @return array<AbstractExpression> |
||
| 588 | */ |
||
| 589 | private function parseArguments() |
||
| 590 | { |
||
| 591 | $argList = []; |
||
| 592 | while (true) { |
||
| 593 | $argList[] = $this->parseExpression(); |
||
| 594 | if ($this->getCurrentToken()->getId() != ExpressionTokenId::COMMA()) { |
||
| 595 | break; |
||
| 596 | } |
||
| 597 | |||
| 598 | $this->getLexer()->nextToken(); |
||
| 599 | } |
||
| 600 | |||
| 601 | return $argList; |
||
| 602 | } |
||
| 603 | |||
| 604 | /** |
||
| 605 | * Parse primitive type literal. |
||
| 606 | * |
||
| 607 | * @param IType $targetType Expected type of the current literal |
||
| 608 | * |
||
| 609 | * @throws ODataException |
||
| 610 | * |
||
| 611 | * @return ConstantExpression |
||
| 612 | */ |
||
| 613 | private function parseTypedLiteral(IType $targetType) |
||
| 614 | { |
||
| 615 | $literal = $this->getLexer()->getCurrentToken()->Text; |
||
| 616 | $outVal = null; |
||
| 617 | if (!$targetType->validate($literal, $outVal)) { |
||
| 618 | throw ODataException::createSyntaxError( |
||
| 619 | Messages::expressionParserUnrecognizedLiteral( |
||
| 620 | $targetType->getFullTypeName(), |
||
| 621 | $literal, |
||
| 622 | $this->getLexer()->getCurrentToken()->Position |
||
| 623 | ) |
||
| 624 | ); |
||
| 625 | } |
||
| 626 | |||
| 627 | $result = new ConstantExpression($outVal, $targetType); |
||
| 628 | $this->getLexer()->nextToken(); |
||
| 629 | |||
| 630 | return $result; |
||
| 631 | } |
||
| 632 | |||
| 633 | /** |
||
| 634 | * Parse null literal. |
||
| 635 | * |
||
| 636 | * @throws ODataException |
||
| 637 | * @return ConstantExpression |
||
| 638 | */ |
||
| 639 | private function parseNullLiteral() |
||
| 640 | { |
||
| 641 | $this->getLexer()->nextToken(); |
||
| 642 | |||
| 643 | return new ConstantExpression(null, new Null1()); |
||
| 644 | } |
||
| 645 | |||
| 646 | /** |
||
| 647 | * Check the current token is of a specific kind. |
||
| 648 | * |
||
| 649 | * @param ExpressionTokenId $expressionTokenId Token to check |
||
| 650 | * with current token |
||
| 651 | * |
||
| 652 | * @return bool |
||
| 653 | */ |
||
| 654 | private function tokenIdentifierIs($expressionTokenId) |
||
| 657 | } |
||
| 658 | |||
| 659 | /** |
||
| 660 | * Validate the current token. |
||
| 661 | * |
||
| 662 | * @param ExpressionTokenId $expressionTokenId Token to check |
||
| 663 | * with current token |
||
| 664 | * |
||
| 665 | * @throws ODataException |
||
| 666 | */ |
||
| 667 | private function validateToken(ExpressionTokenId $expressionTokenId) |
||
| 668 | { |
||
| 669 | if ($this->getCurrentToken()->getId() != $expressionTokenId) { |
||
| 670 | throw ODataException::createSyntaxError('Syntax error.'); |
||
| 671 | } |
||
| 672 | } |
||
| 673 | |||
| 674 | /** |
||
| 675 | * Increment recursion count and throw error if beyond limit. |
||
| 676 | * |
||
| 677 | * |
||
| 678 | * @throws ODataException If max recursion limit hits |
||
| 679 | */ |
||
| 680 | private function recurseEnter() |
||
| 681 | { |
||
| 682 | ++$this->recursionDepth; |
||
| 683 | if ($this->recursionDepth == self::RECURSION_LIMIT) { |
||
| 684 | throw ODataException::createSyntaxError('Recursion limit reached.'); |
||
| 685 | } |
||
| 686 | } |
||
| 687 | |||
| 688 | /** |
||
| 689 | * Decrement recursion count. |
||
| 690 | */ |
||
| 691 | private function recurseLeave() |
||
| 692 | { |
||
| 693 | --$this->recursionDepth; |
||
| 694 | } |
||
| 695 | |||
| 696 | /** |
||
| 697 | * Generates Comparison Expression. |
||
| 698 | * |
||
| 699 | * @param AbstractExpression $left The LHS expression |
||
| 700 | * @param AbstractExpression $right The RHS expression |
||
| 701 | * @param ExpressionToken $expressionToken The comparison expression token |
||
| 702 | * @param bool $isPHPExpressionProvider |
||
| 703 | * |
||
| 704 | * @throws ODataException |
||
| 705 | * @return FunctionCallExpression|UnaryExpression|RelationalExpression |
||
| 706 | */ |
||
| 707 | private static function generateComparisonExpression($left, $right, $expressionToken, $isPHPExpressionProvider) |
||
| 831 | ); |
||
| 832 | } |
||
| 833 | } |
||
| 834 | |||
| 835 | /** |
||
| 836 | * Retrieve current lexer instance. |
||
| 837 | * |
||
| 838 | * @return ExpressionLexer |
||
| 839 | */ |
||
| 840 | public function getLexer(): ExpressionLexer |
||
| 841 | { |
||
| 842 | return $this->lexer; |
||
| 843 | } |
||
| 844 | } |
||
| 845 |
Loading history...