| 1: | <?php declare(strict_types = 1); |
| 2: | |
| 3: | namespace PHPStan\PhpDocParser\Parser; |
| 4: | |
| 5: | use PHPStan\PhpDocParser\Ast; |
| 6: | use PHPStan\PhpDocParser\Lexer\Lexer; |
| 7: | use function strtolower; |
| 8: | use function trim; |
| 9: | |
| 10: | class ConstExprParser |
| 11: | { |
| 12: | |
| 13: | public function parse(TokenIterator $tokens, bool $trimStrings = false): Ast\ConstExpr\ConstExprNode |
| 14: | { |
| 15: | if ($tokens->isCurrentTokenType(Lexer::TOKEN_FLOAT)) { |
| 16: | $value = $tokens->currentTokenValue(); |
| 17: | $tokens->next(); |
| 18: | return new Ast\ConstExpr\ConstExprFloatNode($value); |
| 19: | } |
| 20: | |
| 21: | if ($tokens->isCurrentTokenType(Lexer::TOKEN_INTEGER)) { |
| 22: | $value = $tokens->currentTokenValue(); |
| 23: | $tokens->next(); |
| 24: | return new Ast\ConstExpr\ConstExprIntegerNode($value); |
| 25: | } |
| 26: | |
| 27: | if ($tokens->isCurrentTokenType(Lexer::TOKEN_SINGLE_QUOTED_STRING)) { |
| 28: | $value = $tokens->currentTokenValue(); |
| 29: | if ($trimStrings) { |
| 30: | $value = trim($tokens->currentTokenValue(), "'"); |
| 31: | } |
| 32: | $tokens->next(); |
| 33: | return new Ast\ConstExpr\ConstExprStringNode($value); |
| 34: | |
| 35: | } elseif ($tokens->isCurrentTokenType(Lexer::TOKEN_DOUBLE_QUOTED_STRING)) { |
| 36: | $value = $tokens->currentTokenValue(); |
| 37: | if ($trimStrings) { |
| 38: | $value = trim($tokens->currentTokenValue(), '"'); |
| 39: | } |
| 40: | $tokens->next(); |
| 41: | return new Ast\ConstExpr\ConstExprStringNode($value); |
| 42: | |
| 43: | } elseif ($tokens->isCurrentTokenType(Lexer::TOKEN_IDENTIFIER)) { |
| 44: | $identifier = $tokens->currentTokenValue(); |
| 45: | $tokens->next(); |
| 46: | |
| 47: | switch (strtolower($identifier)) { |
| 48: | case 'true': |
| 49: | return new Ast\ConstExpr\ConstExprTrueNode(); |
| 50: | case 'false': |
| 51: | return new Ast\ConstExpr\ConstExprFalseNode(); |
| 52: | case 'null': |
| 53: | return new Ast\ConstExpr\ConstExprNullNode(); |
| 54: | case 'array': |
| 55: | $tokens->consumeTokenType(Lexer::TOKEN_OPEN_PARENTHESES); |
| 56: | return $this->parseArray($tokens, Lexer::TOKEN_CLOSE_PARENTHESES); |
| 57: | } |
| 58: | |
| 59: | if ($tokens->tryConsumeTokenType(Lexer::TOKEN_DOUBLE_COLON)) { |
| 60: | $classConstantName = ''; |
| 61: | $lastType = null; |
| 62: | while (true) { |
| 63: | if ($lastType !== Lexer::TOKEN_IDENTIFIER && $tokens->currentTokenType() === Lexer::TOKEN_IDENTIFIER) { |
| 64: | $classConstantName .= $tokens->currentTokenValue(); |
| 65: | $tokens->consumeTokenType(Lexer::TOKEN_IDENTIFIER); |
| 66: | $lastType = Lexer::TOKEN_IDENTIFIER; |
| 67: | |
| 68: | continue; |
| 69: | } |
| 70: | |
| 71: | if ($lastType !== Lexer::TOKEN_WILDCARD && $tokens->tryConsumeTokenType(Lexer::TOKEN_WILDCARD)) { |
| 72: | $classConstantName .= '*'; |
| 73: | $lastType = Lexer::TOKEN_WILDCARD; |
| 74: | |
| 75: | if ($tokens->getSkippedHorizontalWhiteSpaceIfAny() !== '') { |
| 76: | break; |
| 77: | } |
| 78: | |
| 79: | continue; |
| 80: | } |
| 81: | |
| 82: | if ($lastType === null) { |
| 83: | |
| 84: | $tokens->consumeTokenType(Lexer::TOKEN_WILDCARD); |
| 85: | } |
| 86: | |
| 87: | break; |
| 88: | } |
| 89: | |
| 90: | return new Ast\ConstExpr\ConstFetchNode($identifier, $classConstantName); |
| 91: | |
| 92: | } |
| 93: | |
| 94: | return new Ast\ConstExpr\ConstFetchNode('', $identifier); |
| 95: | |
| 96: | } elseif ($tokens->tryConsumeTokenType(Lexer::TOKEN_OPEN_SQUARE_BRACKET)) { |
| 97: | return $this->parseArray($tokens, Lexer::TOKEN_CLOSE_SQUARE_BRACKET); |
| 98: | } |
| 99: | |
| 100: | throw new ParserException( |
| 101: | $tokens->currentTokenValue(), |
| 102: | $tokens->currentTokenType(), |
| 103: | $tokens->currentTokenOffset(), |
| 104: | Lexer::TOKEN_IDENTIFIER |
| 105: | ); |
| 106: | } |
| 107: | |
| 108: | |
| 109: | private function parseArray(TokenIterator $tokens, int $endToken): Ast\ConstExpr\ConstExprArrayNode |
| 110: | { |
| 111: | $items = []; |
| 112: | |
| 113: | if (!$tokens->tryConsumeTokenType($endToken)) { |
| 114: | do { |
| 115: | $items[] = $this->parseArrayItem($tokens); |
| 116: | } while ($tokens->tryConsumeTokenType(Lexer::TOKEN_COMMA) && !$tokens->isCurrentTokenType($endToken)); |
| 117: | $tokens->consumeTokenType($endToken); |
| 118: | } |
| 119: | |
| 120: | return new Ast\ConstExpr\ConstExprArrayNode($items); |
| 121: | } |
| 122: | |
| 123: | |
| 124: | private function parseArrayItem(TokenIterator $tokens): Ast\ConstExpr\ConstExprArrayItemNode |
| 125: | { |
| 126: | $expr = $this->parse($tokens); |
| 127: | |
| 128: | if ($tokens->tryConsumeTokenType(Lexer::TOKEN_DOUBLE_ARROW)) { |
| 129: | $key = $expr; |
| 130: | $value = $this->parse($tokens); |
| 131: | |
| 132: | } else { |
| 133: | $key = null; |
| 134: | $value = $expr; |
| 135: | } |
| 136: | |
| 137: | return new Ast\ConstExpr\ConstExprArrayItemNode($key, $value); |
| 138: | } |
| 139: | |
| 140: | } |
| 141: | |