Text_Highlighter::_getToken PHP Méthode

    function _getToken()
    {
        if (!empty($this->_tokenStack)) {
            return array_pop($this->_tokenStack);
        }
        if ($this->_pos >= $this->_len) {
            return NULL;
        }
        if ($this->_state != -1 && preg_match($this->_endpattern, $this->_str, $m, PREG_OFFSET_CAPTURE, $this->_pos)) {
            $endpos = $m[0][1];
            $endmatch = $m[0][0];
        } else {
            $endpos = -1;
        }
        preg_match($this->_regs[$this->_state], $this->_str, $m, PREG_OFFSET_CAPTURE, $this->_pos);
        $n = 1;
        foreach ($this->_counts[$this->_state] as $i => $count) {
            if (!isset($m[$n])) {
                break;
            }
            if ($m[$n][1] > -1 && ($endpos == -1 || $m[$n][1] < $endpos)) {
                if ($this->_states[$this->_state][$i] != -1) {
                    $this->_tokenStack[] = array($this->_delim[$this->_state][$i], $m[$n][0]);
                } else {
                    $inner = $this->_inner[$this->_state][$i];
                    if (isset($this->_parts[$this->_state][$i])) {
                        $parts = array();
                        $partpos = $m[$n][1];
                        for ($j = 1; $j <= $count; $j++) {
                            if ($m[$j + $n][1] < 0) {
                                continue;
                            }
                            if (isset($this->_parts[$this->_state][$i][$j])) {
                                if ($m[$j + $n][1] > $partpos) {
                                    array_unshift($parts, array($inner, substr($this->_str, $partpos, $m[$j + $n][1] - $partpos)));
                                }
                                array_unshift($parts, array($this->_parts[$this->_state][$i][$j], $m[$j + $n][0]));
                            }
                            $partpos = $m[$j + $n][1] + strlen($m[$j + $n][0]);
                        }
                        if ($partpos < $m[$n][1] + strlen($m[$n][0])) {
                            array_unshift($parts, array($inner, substr($this->_str, $partpos, $m[$n][1] - $partpos + strlen($m[$n][0]))));
                        }
                        $this->_tokenStack = array_merge($this->_tokenStack, $parts);
                    } else {
                        foreach ($this->_keywords[$this->_state][$i] as $g => $re) {
                            if (isset($this->_disabled[$g])) {
                                continue;
                            }
                            if (preg_match($re, $m[$n][0])) {
                                $inner = $this->_kwmap[$g];
                                break;
                            }
                        }
                        $this->_tokenStack[] = array($inner, $m[$n][0]);
                    }
                }
                if ($m[$n][1] > $this->_pos) {
                    $this->_tokenStack[] = array($this->_lastinner, substr($this->_str, $this->_pos, $m[$n][1] - $this->_pos));
                }
                $this->_pos = $m[$n][1] + strlen($m[$n][0]);
                if ($this->_states[$this->_state][$i] != -1) {
                    $this->_stack[] = array($this->_state, $this->_lastdelim, $this->_lastinner, $this->_endpattern);
                    $this->_lastinner = $this->_inner[$this->_state][$i];
                    $this->_lastdelim = $this->_delim[$this->_state][$i];
                    $l = $this->_state;
                    $this->_state = $this->_states[$this->_state][$i];
                    $this->_endpattern = $this->_end[$this->_state];
                    if ($this->_subst[$l][$i]) {
                        for ($k = 0; $k <= $this->_counts[$l][$i]; $k++) {
                            if (!isset($m[$i + $k])) {
                                break;
                            }
                            $quoted = preg_quote($m[$n + $k][0], '/');
                            $this->_endpattern = str_replace('%' . $k . '%', $quoted, $this->_endpattern);
                            $this->_endpattern = str_replace('%b' . $k . '%', $this->_matchingBrackets($quoted), $this->_endpattern);
                        }
                    }
                }
                return array_pop($this->_tokenStack);
            }
            $n += $count + 1;
        }
        if ($endpos > -1) {
            $this->_tokenStack[] = array($this->_lastdelim, $endmatch);
            if ($endpos > $this->_pos) {
                $this->_tokenStack[] = array($this->_lastinner, substr($this->_str, $this->_pos, $endpos - $this->_pos));
            }
            list($this->_state, $this->_lastdelim, $this->_lastinner, $this->_endpattern) = array_pop($this->_stack);
            $this->_pos = $endpos + strlen($endmatch);
            return array_pop($this->_tokenStack);
        }
        $p = $this->_pos;
        $this->_pos = HL_INFINITY;
        return array($this->_lastinner, substr($this->_str, $p));
    }