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<?php |
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/** |
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* @author Patsura Dmitry https://github.com/ovr <[email protected]> |
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*/ |
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namespace PHPSA; |
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use Ovr\PHPReflection\Types; |
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use PHPSA\Compiler\Types as CompilerTypes; |
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use RuntimeException; |
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/** |
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* The result of the compiler |
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*/ |
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class CompiledExpression |
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{ |
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/** |
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* Unknown type |
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*/ |
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const UNKNOWN = Types::UNKNOWN_TYPE; |
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/** |
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* It's not unknown, It's unimplemented |
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*/ |
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const UNIMPLEMENTED = -100; |
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/** |
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* Void type |
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*/ |
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const VOID = Types::VOID_TYPE; |
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/** |
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* Integer type |
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*/ |
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const INTEGER = Types::INT_TYPE; |
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/** |
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* Double/Float type |
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*/ |
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const DOUBLE = Types::DOUBLE_TYPE; |
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/** |
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* Double/Float type |
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*/ |
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const NUMBER = Types::NUMBER; |
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/** |
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* String type |
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*/ |
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const STRING = Types::STRING_TYPE; |
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/** |
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* Boolean type |
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* true or false |
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*/ |
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const BOOLEAN = Types::BOOLEAN_TYPE; |
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/** |
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* Array type |
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*/ |
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const ARR = Types::ARRAY_TYPE; |
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/** |
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* Object type |
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*/ |
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const OBJECT = Types::OBJECT_TYPE; |
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/** |
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* Resource handler type |
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*/ |
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const RESOURCE = Types::RESOURCE_TYPE; |
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/** |
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* Callable type |
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*/ |
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const CALLABLE_TYPE = Types::CALLABLE_TYPE; |
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/** |
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* Value is handled in variable |
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*/ |
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const VARIABLE = 512; |
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/** |
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* NULL type |
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*/ |
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const NULL = Types::NULL_TYPE; |
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/** |
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* self::INT_TYPE | self::DOUBLE_TYPE | self::STRING_TYPE | self::BOOLEAN_TYPE | self::ARRAY_TYPE | self::RESOURCE_TYPE | self::OBJECT_TYPE | self::NULL_TYPE |
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*/ |
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const MIXED = Types::MIXED; |
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/** |
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* I can't explain what it's :D |
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*/ |
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const DYNAMIC = 10000; |
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/** |
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* By default we don't know what it is |
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* |
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* @var int |
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*/ |
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protected $type; |
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/** |
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* Possible value |
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* |
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* @var mixed |
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*/ |
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protected $value; |
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/** |
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* @var Variable|null |
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*/ |
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protected $variable; |
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/** |
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* Construct new CompiledExpression to pass result |
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* |
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* @param int $type |
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* @param mixed $value |
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* @param Variable|null $variable |
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*/ |
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public function __construct($type = self::UNKNOWN, $value = null, Variable $variable = null) |
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{ |
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$this->type = $type; |
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$this->value = $value; |
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$this->variable = $variable; |
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} |
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/** |
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* Returns the value of the expression. |
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* |
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* @return mixed |
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*/ |
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public function getValue() |
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{ |
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return $this->value; |
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} |
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/** |
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* Checks whether the expressions value equals the given value. |
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* |
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* @param integer $value |
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* @return boolean |
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*/ |
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public function isEquals($value) |
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{ |
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return $this->value == $value; |
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} |
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/** |
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* Checks whether the expressions value same the given value. |
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* |
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* @param integer $value |
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* @return boolean |
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*/ |
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public function isSame($value) |
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{ |
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return $this->value === $value; |
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} |
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/** |
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* Returns the type of the expression. |
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* |
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* @return int |
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*/ |
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public function getType() |
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{ |
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return $this->type; |
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} |
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/** |
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* Returns the type of the expression as a string. |
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* |
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* @return string |
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*/ |
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public function getTypeName() |
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{ |
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return CompilerTypes::getTypeName($this->type); |
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} |
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/** |
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* Creates a variable from the expression. |
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* |
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* @param string $name Name of the Variable |
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* @return Variable |
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*/ |
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public function toVariable($name) |
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{ |
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return new Variable($name, $this->value, $this->type); |
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} |
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/** |
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* If we don't know $type but know $value |
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* |
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* @param $value |
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* @throws RuntimeException |
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* @return CompiledExpression |
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*/ |
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public static function fromZvalValue($value) |
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{ |
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return new CompiledExpression(CompilerTypes::getTypeByValue($value), $value); |
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} |
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/** |
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* This is needed via in feature $this->type can store multiple type(s) by bitmask |
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* |
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* @return bool |
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*/ |
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public function canBeObject() |
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{ |
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return ($this->type == self::OBJECT || $this->type & self::OBJECT); |
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} |
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/** |
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* Returns debug info. |
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* |
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* @return array |
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*/ |
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public function __debugInfo() |
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{ |
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return [ |
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'type' => \PHPSA\Compiler\Types::getTypeName($this->type), |
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'value' => $this->value, |
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]; |
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} |
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/** |
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* Check that $this->value is correct for $this->type |
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* |
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* @return boolean |
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*/ |
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public function isCorrectValue() |
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{ |
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$type = gettype($this->value); |
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switch ($this->type) { |
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case CompiledExpression::INTEGER: |
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return $type == 'integer'; |
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case CompiledExpression::NUMBER: |
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return $type == 'integer' || $type == 'double'; |
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case CompiledExpression::DOUBLE: |
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return $type == 'double'; |
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case CompiledExpression::BOOLEAN: |
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return $type == 'boolean'; |
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case CompiledExpression::ARR: |
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return $type == 'array'; |
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case CompiledExpression::STRING: |
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return $type == 'string'; |
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case CompiledExpression::NULL: |
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return $type == 'NULL'; |
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case CompiledExpression::RESOURCE: |
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return $type == 'resource'; |
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} |
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return true; |
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} |
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/** |
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* @return Variable|null |
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*/ |
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public function getVariable() |
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{ |
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return $this->variable; |
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} |
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/** |
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* @return bool |
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*/ |
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public function isString() |
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{ |
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return $this->type == self::STRING; |
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} |
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/** |
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* @return bool |
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*/ |
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public function isTypeKnown() |
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{ |
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return $this->type !== self::UNKNOWN; |
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} |
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/** |
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* @return bool |
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*/ |
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public function isScalar() |
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{ |
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return in_array($this->type, [self::STRING, self::BOOLEAN, self::DOUBLE, self::INTEGER, self::NUMBER], true); |
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} |
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/** |
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* @return bool |
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*/ |
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public function isArray() |
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{ |
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return $this->type === self::ARR; |
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} |
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/** |
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* @return bool |
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*/ |
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public function isObject() |
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{ |
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return $this->type == self::OBJECT; |
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} |
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/** |
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* @return bool |
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*/ |
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public function isCallable() |
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{ |
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return $this->type == self::CALLABLE_TYPE; |
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} |
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/** |
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* @return bool |
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*/ |
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public function hasValue() |
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{ |
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return $this->value !== null || $this->type === self::NULL; |
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} |
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} |
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