Beans_Lessc::compileValue PHP Method

    protected function compileValue($value)
    {
        switch ($value[0]) {
            case 'list':
                // [1] - delimiter
                // [2] - array of values
                return implode($value[1], array_map(array($this, 'compileValue'), $value[2]));
            case 'raw_color':
                if (!empty($this->formatter->compressColors)) {
                    return $this->compileValue($this->coerceColor($value));
                }
                return $value[1];
            case 'keyword':
                // [1] - the keyword
                return $value[1];
            case 'number':
                list(, $num, $unit) = $value;
                // [1] - the number
                // [2] - the unit
                if ($this->numberPrecision !== null) {
                    $num = round($num, $this->numberPrecision);
                }
                return $num . $unit;
            case 'string':
                // [1] - contents of string (includes quotes)
                list(, $delim, $content) = $value;
                foreach ($content as &$part) {
                    if (is_array($part)) {
                        $part = $this->compileValue($part);
                    }
                }
                return $delim . implode($content) . $delim;
            case 'color':
                // [1] - red component (either number or a %)
                // [2] - green component
                // [3] - blue component
                // [4] - optional alpha component
                list(, $r, $g, $b) = $value;
                $r = round($r);
                $g = round($g);
                $b = round($b);
                if (count($value) == 5 && $value[4] != 1) {
                    // rgba
                    return 'rgba(' . $r . ',' . $g . ',' . $b . ',' . $value[4] . ')';
                }
                $h = sprintf("#%02x%02x%02x", $r, $g, $b);
                if (!empty($this->formatter->compressColors)) {
                    // Converting hex color to short notation (e.g. #003399 to #039)
                    if ($h[1] === $h[2] && $h[3] === $h[4] && $h[5] === $h[6]) {
                        $h = '#' . $h[1] . $h[3] . $h[5];
                    }
                }
                return $h;
            case 'function':
                list(, $name, $args) = $value;
                return $name . '(' . $this->compileValue($args) . ')';
            default:
                // assumed to be unit
                $this->throwError("unknown value type: {$value['0']}");
        }
    }