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<?php |
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declare(strict_types=1); |
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namespace PhpMyAdmin\SqlParser\Parsers; |
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use PhpMyAdmin\SqlParser\Components\ParameterDefinition; |
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use PhpMyAdmin\SqlParser\Parseable; |
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use PhpMyAdmin\SqlParser\Parser; |
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use PhpMyAdmin\SqlParser\TokensList; |
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use PhpMyAdmin\SqlParser\TokenType; |
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use function implode; |
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/** |
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* The definition of a parameter of a function or procedure. |
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*/ |
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final class ParameterDefinitions implements Parseable |
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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<string, mixed> $options parameters for parsing |
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* |
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* @return ParameterDefinition[] |
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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 = []; |
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$expr = new ParameterDefinition(); |
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/** |
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* The state of the parser. |
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* |
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* Below are the states of the parser. |
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* |
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* 0 -----------------------[ ( ]------------------------> 1 |
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* |
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* 1 ----------------[ IN / OUT / INOUT ]----------------> 1 |
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* 1 ----------------------[ name ]----------------------> 2 |
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* |
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* 2 -------------------[ data type ]--------------------> 3 |
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* |
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* 3 ------------------------[ , ]-----------------------> 1 |
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* 3 ------------------------[ ) ]-----------------------> (END) |
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*/ |
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$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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$token = $list->tokens[$list->idx]; |
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// End of statement. |
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if ($token->type === TokenType::Delimiter) { |
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break; |
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} |
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// Skipping whitespaces and comments. |
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if (($token->type === TokenType::Whitespace) || ($token->type === TokenType::Comment)) { |
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continue; |
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} |
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if ($state === 0) { |
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if (($token->type === TokenType::Operator) && ($token->value === '(')) { |
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$state = 1; |
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} |
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} elseif ($state === 1) { |
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if (($token->value === 'IN') || ($token->value === 'OUT') || ($token->value === 'INOUT')) { |
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$expr->inOut = $token->value; |
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++$list->idx; |
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} elseif ($token->value === ')') { |
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++$list->idx; |
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break; |
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} else { |
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$expr->name = $token->value; |
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$state = 2; |
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} |
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} elseif ($state === 2) { |
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$expr->type = DataTypes::parse($parser, $list); |
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$state = 3; |
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} else { |
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$ret[] = $expr; |
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$expr = new ParameterDefinition(); |
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if ($token->value === ',') { |
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$state = 1; |
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} elseif ($token->value === ')') { |
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++$list->idx; |
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break; |
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} |
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} |
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} |
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// Last iteration was not saved. |
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if (isset($expr->name) && ($expr->name !== '')) { |
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$ret[] = $expr; |
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} |
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--$list->idx; |
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return $ret; |
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} |
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/** @param ParameterDefinition[] $component the component to be built */ |
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public static function buildAll(array $component): string |
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{ |
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return '(' . implode(', ', $component) . ')'; |
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} |
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} |
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phpmyadmin /
sql-parser
