PhpMyAdmin\SqlParser\Components\Parsers\ExpressionArray::parse()

Complexity

Conditions	21
Paths	36

Size

Total Lines	82
Code Lines	40

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	39
CRAP Score	21

Importance

Changes

0

<?php
    public static function parse(Parser $parser, TokensList $list, array $options = []): array
    {
        $ret = [];

        /**
         * The state of the parser.
         *
         * Below are the states of the parser.
         *
         *      0 ----------------------[ array ]---------------------> 1
         *
         *      1 ------------------------[ , ]------------------------> 0
         *      1 -----------------------[ else ]----------------------> (END)
         */
        $state = 0;

        for (; $list->idx < $list->count; ++$list->idx) {
            /**
             * Token parsed at this moment.
             */
            $token = $list->tokens[$list->idx];

            // End of statement.
            if ($token->type === TokenType::Delimiter) {
                break;
            }

            // Skipping whitespaces and comments.
            if (($token->type === TokenType::Whitespace) || ($token->type === TokenType::Comment)) {
                continue;
            }

            if (
                ($token->type === TokenType::Keyword)
                && ($token->flags & Token::FLAG_KEYWORD_RESERVED)
                && ((~$token->flags & Token::FLAG_KEYWORD_FUNCTION))
                && ($token->value !== 'DUAL')
                && ($token->value !== 'NULL')
                && ($token->value !== 'CASE')
                && ($token->value !== 'NOT')
            ) {
                // No keyword is expected.
                break;
            }

            if ($state === 0) {
                if ($token->type === TokenType::Keyword && $token->value === 'CASE') {
                    $expr = CaseExpression::parse($parser, $list, $options);
                } else {
                    $expr = Expression::parse($parser, $list, $options);
                }

                if ($expr === null) {
                    break;
                }

                $ret[] = $expr;
                $state = 1;
            } elseif ($state === 1) {
                if ($token->value !== ',') {
                    break;
                }

                $state = 0;
            }
        }

        if ($state === 0) {

The condition $state === 0 is always true.

            $parser->error('An expression was expected.', $list->tokens[$list->idx]);
        }

        --$list->idx;
        $retIndex = count($ret) - 1;
        if (isset($ret[$retIndex])) {
            $expr = $ret[$retIndex]->expr;
            if (preg_match('/\s*--\s.*$/', $expr, $matches)) {
                $found = $matches[0];
                $ret[$retIndex]->expr = substr($expr, 0, strlen($expr) - strlen($found));
            }
        }

        return $ret;
    }