120 lines
3.0 KiB
PHP
120 lines
3.0 KiB
PHP
<?php
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/**
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* Parses a function call.
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*/
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namespace PhpMyAdmin\SqlParser\Components;
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use PhpMyAdmin\SqlParser\Component;
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use PhpMyAdmin\SqlParser\Parser;
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use PhpMyAdmin\SqlParser\Token;
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use PhpMyAdmin\SqlParser\TokensList;
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/**
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* Parses a function call.
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*
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* @category Keywords
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*
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* @license https://www.gnu.org/licenses/gpl-2.0.txt GPL-2.0+
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*/
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class FunctionCall extends Component
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{
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/**
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* The name of this function.
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*
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* @var string
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*/
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public $name;
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/**
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* The list of parameters.
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*
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* @var ArrayObj
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*/
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public $parameters;
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/**
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* Constructor.
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*
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* @param string $name the name of the function to be called
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* @param array|ArrayObj $parameters the parameters of this function
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*/
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public function __construct($name = null, $parameters = null)
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{
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$this->name = $name;
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if (is_array($parameters)) {
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$this->parameters = new ArrayObj($parameters);
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} elseif ($parameters instanceof ArrayObj) {
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$this->parameters = $parameters;
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}
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}
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/**
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* @param Parser $parser the parser that serves as context
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* @param TokensList $list the list of tokens that are being parsed
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* @param array $options parameters for parsing
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*
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* @return FunctionCall
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*/
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public static function parse(Parser $parser, TokensList $list, array $options = array())
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{
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$ret = new self();
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/**
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* The state of the parser.
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*
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* Below are the states of the parser.
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*
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* 0 ----------------------[ name ]-----------------------> 1
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*
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* 1 --------------------[ parameters ]-------------------> (END)
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*
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* @var int
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*/
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$state = 0;
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for (; $list->idx < $list->count; ++$list->idx) {
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/**
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* Token parsed at this moment.
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*
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* @var Token
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*/
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$token = $list->tokens[$list->idx];
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// End of statement.
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if ($token->type === Token::TYPE_DELIMITER) {
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break;
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}
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// Skipping whitespaces and comments.
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if (($token->type === Token::TYPE_WHITESPACE) || ($token->type === Token::TYPE_COMMENT)) {
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continue;
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}
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if ($state === 0) {
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$ret->name = $token->value;
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$state = 1;
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} elseif ($state === 1) {
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if (($token->type === Token::TYPE_OPERATOR) && ($token->value === '(')) {
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$ret->parameters = ArrayObj::parse($parser, $list);
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}
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break;
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}
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}
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return $ret;
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}
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/**
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* @param FunctionCall $component the component to be built
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* @param array $options parameters for building
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*
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* @return string
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*/
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public static function build($component, array $options = array())
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{
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return $component->name . $component->parameters;
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}
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}
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