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<?php |
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declare(strict_types=1); |
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namespace JMS\Serializer\Type; |
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use JMS\Serializer\Type\Exception\SyntaxError; |
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class Parser implements ParserInterface |
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{ |
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/** |
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* @var Lexer |
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*/ |
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private $lexer; |
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public function parse(string $string): array |
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{ |
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$this->lexer = new Lexer(); |
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448 |
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$this->lexer->setInput($string); |
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$this->lexer->moveNext(); |
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448 |
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return $this->visit(); |
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448 |
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} |
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448 |
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/** |
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320 |
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* @return mixed |
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*/ |
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private function visit() |
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320 |
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{ |
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$this->lexer->moveNext(); |
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if (!$this->lexer->token) { |
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throw new SyntaxError( |
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'Syntax error, unexpected end of stream' |
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); |
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} |
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if (Lexer::T_FLOAT === $this->lexer->token['type']) { |
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return floatval($this->lexer->token['value']); |
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} elseif (Lexer::T_INTEGER === $this->lexer->token['type']) { |
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return intval($this->lexer->token['value']); |
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} elseif (Lexer::T_NULL === $this->lexer->token['type']) { |
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return null; |
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} elseif (Lexer::T_STRING === $this->lexer->token['type']) { |
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return $this->lexer->token['value']; |
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} elseif (Lexer::T_IDENTIFIER === $this->lexer->token['type']) { |
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if ($this->lexer->isNextToken(Lexer::T_TYPE_START)) { |
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return $this->visitCompoundType(); |
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} elseif ($this->lexer->isNextToken(Lexer::T_ARRAY_START)) { |
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return $this->visitArrayType(); |
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} |
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return $this->visitSimpleType(); |
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} elseif (Lexer::T_ARRAY_START === $this->lexer->token['type']) { |
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return $this->visitArrayType(); |
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} |
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throw new SyntaxError(sprintf( |
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'Syntax error, unexpected "%s" (%s)', |
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$this->lexer->token['value'], |
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$this->getConstant($this->lexer->token['type']) |
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)); |
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} |
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/** |
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* @return string|mixed[] |
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*/ |
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private function visitSimpleType() |
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{ |
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$value = $this->lexer->token['value']; |
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return ['name' => $value, 'params' => []]; |
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} |
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private function visitCompoundType(): array |
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{ |
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$name = $this->lexer->token['value']; |
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$this->match(Lexer::T_TYPE_START); |
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$params = []; |
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if (!$this->lexer->isNextToken(Lexer::T_TYPE_END)) { |
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while (true) { |
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$params[] = $this->visit(); |
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if ($this->lexer->isNextToken(Lexer::T_TYPE_END)) { |
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break; |
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} |
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$this->match(Lexer::T_COMMA); |
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} |
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} |
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$this->match(Lexer::T_TYPE_END); |
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return [ |
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'name' => $name, |
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'params' => $params, |
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]; |
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} |
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private function visitArrayType(): array |
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{ |
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// $this->match(Lexer::T_ARRAY_START); |
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$params = []; |
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if (!$this->lexer->isNextToken(Lexer::T_ARRAY_END)) { |
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while (true) { |
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$params[] = $this->visit(); |
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if ($this->lexer->isNextToken(Lexer::T_ARRAY_END)) { |
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break; |
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} |
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$this->match(Lexer::T_COMMA); |
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} |
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} |
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$this->match(Lexer::T_ARRAY_END); |
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return $params; |
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} |
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private function match(int $token): void |
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{ |
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if (!$this->lexer->lookahead) { |
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throw new SyntaxError( |
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sprintf('Syntax error, unexpected end of stream, expected %s', $this->getConstant($token)) |
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); |
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} |
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$lookaheadType = $this->lexer->lookahead['type']; |
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// Short-circuit on first condition, usually types match |
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if ($lookaheadType === $token) { |
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$this->lexer->moveNext(); |
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return; |
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} |
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throw new SyntaxError(sprintf( |
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'Syntax error, unexpected "%s" (%s), expected was %s', |
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$this->lexer->lookahead['value'], |
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$this->getConstant($this->lexer->lookahead['type']), |
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$this->getConstant($token) |
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)); |
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} |
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private function getConstant(int $value): string |
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{ |
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$oClass = new \ReflectionClass(Lexer::class); |
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return array_search($value, $oClass->getConstants()); |
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} |
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} |
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schmittjoh /
serializer
Loading history...
Sometimes obsolete code just ends up commented out instead of removed. In this case it is better to remove the code once you have checked you do not need it.
The code might also have been commented out for debugging purposes. In this case it is vital that someone uncomments it again or your project may behave in very unexpected ways in production.
This check looks for comments that seem to be mostly valid code and reports them.