Symplify\PHP7_CodeSniffer\Sniffs\AbstractPatternSniff::parse()

Complexity

Conditions	15
Paths	131

Size

Total Lines	79
Code Lines	43

Duplication

Lines	0
Ratio	0 %

Importance

Changes

0

<?php
    private function parse($pattern)
    {
        $patterns   = array();
        $length     = strlen($pattern);
        $lastToken  = 0;
        $firstToken = 0;

        for ($i = 0; $i < $length; $i++) {
            $specialPattern = false;
            $isLastChar     = ($i === ($length - 1));
            $oldFirstToken  = $firstToken;

            if (substr($pattern, $i, 3) === '...') {
                // It's a skip pattern. The skip pattern requires the
                // content of the token in the "from" position and the token
                // to skip to.
                $specialPattern = $this->createSkipPattern($pattern, ($i - 1));
                $lastToken      = ($i - $firstToken);
                $firstToken     = ($i + 3);
                $i = ($i + 2);

                if ($specialPattern['to'] !== 'unknown') {
                    $firstToken++;
                }
            } else if (substr($pattern, $i, 3) === 'abc') {
                $specialPattern = array('type' => 'string');
                $lastToken      = ($i - $firstToken);
                $firstToken     = ($i + 3);
                $i = ($i + 2);
            } else if (substr($pattern, $i, 3) === 'EOL') {
                $specialPattern = array('type' => 'newline');
                $lastToken      = ($i - $firstToken);
                $firstToken     = ($i + 3);
                $i = ($i + 2);
            }//end if

            if ($specialPattern !== false || $isLastChar === true) {
                // If we are at the end of the string, don't worry about a limit.
                if ($isLastChar === true) {
                    // Get the string from the end of the last skip pattern, if any,
                    // to the end of the pattern string.
                    $str = substr($pattern, $oldFirstToken);
                } else {
                    // Get the string from the end of the last special pattern,
                    // if any, to the start of this special pattern.
                    if ($lastToken === 0) {
                        // Note that if the last special token was zero characters ago,
                        // there will be nothing to process so we can skip this bit.
                        // This happens if you have something like: EOL... in your pattern.
                        $str = '';
                    } else {
                        $str = substr($pattern, $oldFirstToken, $lastToken);
                    }
                }

                if ($str !== '') {
                    $tokenPatterns = $this->createTokenPattern($str);
                    foreach ($tokenPatterns as $tokenPattern) {
                        $patterns[] = $tokenPattern;
                    }
                }

                // Make sure we don't skip the last token.
                if ($isLastChar === false && $i === ($length - 1)) {
                    $i--;
                }
            }//end if

            // Add the skip pattern *after* we have processed
            // all the tokens from the end of the last skip pattern
            // to the start of this skip pattern.
            if ($specialPattern !== false) {
                $patterns[] = $specialPattern;
            }
        }//end for

        return $patterns;

    }//end parse()