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<?php |
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/** |
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* @license http://opensource.org/licenses/mit-license.php MIT |
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* @link https://github.com/nicoSWD |
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* @author Nicolas Oelgart <[email protected]> |
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*/ |
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declare(strict_types=1); |
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namespace nicoSWD\Rules; |
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use Iterator; |
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use nicoSWD\Rules\Tokens\{ |
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BaseToken, |
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TokenFactory, |
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TokenFunction, |
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TokenOpeningArray, |
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TokenRegex, |
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TokenString, |
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TokenVariable |
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}; |
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use nicoSWD\Rules\AST\Nodes\{ |
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NodeArray, |
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NodeFunction, |
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NodeString, |
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NodeVariable |
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}; |
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final class AST implements Iterator |
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{ |
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/** |
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* @var Parser |
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*/ |
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public $parser; |
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/** |
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* @var Stack |
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*/ |
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protected $stack; |
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/** |
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* @var mixed[] |
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*/ |
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protected $variables = []; |
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/** |
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* @param Stack $stack |
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* @param Parser $parser |
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*/ |
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224 |
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public function __construct(Stack $stack, Parser $parser) |
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{ |
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224 |
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$this->stack = $stack; |
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224 |
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$this->variables = $parser->variables; |
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224 |
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$this->parser = $parser; |
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224 |
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} |
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214 |
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public function next() |
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{ |
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214 |
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$this->stack->next(); |
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214 |
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} |
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224 |
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public function valid() : bool |
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{ |
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224 |
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return $this->stack->valid(); |
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} |
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222 |
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public function current() |
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{ |
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222 |
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$current = $this->stack->current(); |
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switch (true) { |
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default: |
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212 |
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return $current; |
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222 |
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case $current instanceof TokenString: |
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220 |
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case $current instanceof TokenRegex: |
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168 |
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$current = new NodeString($this); |
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168 |
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break; |
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218 |
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case $current instanceof TokenOpeningArray: |
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52 |
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$current = new NodeArray($this); |
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break; |
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218 |
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case $current instanceof TokenVariable: |
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94 |
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$current = new NodeVariable($this); |
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break; |
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216 |
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case $current instanceof TokenFunction: |
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$current = new NodeFunction($this); |
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break; |
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} |
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206 |
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return $current->getNode(); |
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} |
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/** |
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* @codeCoverageIgnore |
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*/ |
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public function key() : int |
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{ |
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return $this->stack->key(); |
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} |
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224 |
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public function rewind() |
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{ |
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224 |
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$this->stack->rewind(); |
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224 |
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} |
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/** |
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* @throws Exceptions\ParserException |
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*/ |
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94 |
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public function getVariable(string $name) : BaseToken |
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{ |
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94 |
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if (!array_key_exists($name, $this->variables)) { |
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4 |
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$token = $this->stack->current(); |
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4 |
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throw new Exceptions\ParserException(sprintf( |
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'Undefined variable "%s" at position %d on line %d', |
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4 |
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$name, |
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4 |
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$token->getPosition(), |
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4 |
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$token->getLine() |
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)); |
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} |
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90 |
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return TokenFactory::createFromPHPType($this->variables[$name]); |
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} |
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206 |
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public function getStack() : Stack |
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{ |
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206 |
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return $this->stack; |
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} |
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} |
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nicoSWD /
php-rule-parser
