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<?php
/**
* Defines a component that is later extended to parse specialized components or
* keywords.
*
* There is a small difference between *Component and *Keyword classes: usually,
* *Component parsers can be reused in multiple situations and *Keyword parsers
* count on the *Component classes to do their job.
*/
declare(strict_types=1);
namespace PhpMyAdmin\SqlParser;
use Exception;
/**
* A component (of a statement) is a part of a statement that is common to
* multiple query types.
*/
abstract class Component
{
/**
* Parses the tokens contained in the given list in the context of the given
* parser.
*
* @param Parser $parser the parser that serves as context
* @param TokensList $list the list of tokens that are being parsed
* @param array $options parameters for parsing
*
* @return mixed
*
* @throws Exception not implemented yet.
*/
public static function parse(
Parser $parser,
TokensList $list,
array $options = []
) {
// This method should be abstract, but it can't be both static and
// abstract.
throw new Exception(Translator::gettext('Not implemented yet.'));
}
/**
* Builds the string representation of a component of this type.
*
* In other words, this function represents the inverse function of
* `static::parse`.
*
* @param mixed $component the component to be built
* @param array $options parameters for building
*
* @return mixed
*
* @throws Exception not implemented yet.
*/
public static function build($component, array $options = [])
{
// This method should be abstract, but it can't be both static and
// abstract.
throw new Exception(Translator::gettext('Not implemented yet.'));
}
/**
* Builds the string representation of a component of this type.
*
* @see static::build
*
* @return string
*/
public function __toString()
{
return static::build($this);
}
}