MarcusSchwarz /
lesserphp
Complex classes like Parser often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use Parser, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 20 | class Parser |
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| 21 | { |
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| 22 | protected static $nextBlockId = 0; // used to uniquely identify blocks |
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| 23 | |||
| 24 | protected static $precedence = [ |
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| 25 | '=<' => 0, |
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| 26 | '>=' => 0, |
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| 27 | '=' => 0, |
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| 28 | '<' => 0, |
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| 29 | '>' => 0, |
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| 30 | |||
| 31 | '+' => 1, |
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| 32 | '-' => 1, |
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| 33 | '*' => 2, |
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| 34 | '/' => 2, |
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| 35 | '%' => 2, |
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| 36 | ]; |
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| 37 | |||
| 38 | protected static $whitePattern; |
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| 39 | protected static $commentMulti; |
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| 40 | |||
| 41 | protected static $commentSingle = "//"; |
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| 42 | protected static $commentMultiLeft = "/*"; |
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| 43 | protected static $commentMultiRight = "*/"; |
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| 44 | |||
| 45 | // regex string to match any of the operators |
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| 46 | protected static $operatorString; |
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| 47 | |||
| 48 | // these properties will supress division unless it's inside parenthases |
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| 49 | protected static $supressDivisionProps = |
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| 50 | ['/border-radius$/i', '/^font$/i']; |
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| 51 | |||
| 52 | private $blockDirectives = [ |
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| 53 | 'font-face', |
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| 54 | 'keyframes', |
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| 55 | 'page', |
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| 56 | '-moz-document', |
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| 57 | 'viewport', |
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| 58 | '-moz-viewport', |
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| 59 | '-o-viewport', |
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| 60 | '-ms-viewport', |
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| 61 | ]; |
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| 62 | private $lineDirectives = ['charset']; |
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| 63 | |||
| 64 | /** |
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| 65 | * if we are in parens we can be more liberal with whitespace around |
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| 66 | * operators because it must evaluate to a single value and thus is less |
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| 67 | * ambiguous. |
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| 68 | * |
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| 69 | * Consider: |
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| 70 | * property1: 10 -5; // is two numbers, 10 and -5 |
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| 71 | * property2: (10 -5); // should evaluate to 5 |
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| 72 | */ |
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| 73 | protected $inParens = false; |
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| 74 | |||
| 75 | // caches preg escaped literals |
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| 76 | protected static $literalCache = []; |
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| 77 | /** @var int */ |
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| 78 | public $count; |
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| 79 | /** @var int */ |
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| 80 | private $line; |
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| 81 | /** @var array */ |
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| 82 | private $seenComments; |
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| 83 | /** @var string */ |
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| 84 | public $buffer; |
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| 85 | |||
| 86 | private $env; |
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| 87 | /** @var bool */ |
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| 88 | private $inExp; |
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| 89 | /** @var string */ |
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| 90 | private $currentProperty; |
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| 91 | |||
| 92 | /** |
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| 93 | * @var bool |
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| 94 | */ |
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| 95 | private $writeComments = false; |
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| 96 | |||
| 97 | /** |
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| 98 | * Parser constructor. |
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| 99 | * |
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| 100 | * @param \LesserPhp\Compiler $lessc |
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| 101 | * @param null $sourceName |
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| 102 | */ |
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| 103 | 49 | public function __construct(Compiler $lessc, $sourceName = null) |
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| 104 | { |
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| 105 | 49 | $this->eatWhiteDefault = true; |
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| 106 | // reference to less needed for vPrefix, mPrefix, and parentSelector |
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| 107 | 49 | $this->lessc = $lessc; |
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| 108 | |||
| 109 | 49 | $this->sourceName = $sourceName; // name used for error messages |
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| 110 | |||
| 111 | 49 | if (!self::$operatorString) { |
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| 112 | 1 | self::$operatorString = |
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| 113 | 1 | '(' . implode('|', array_map([Compiler::class, 'pregQuote'], array_keys(self::$precedence))) . ')'; |
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| 114 | |||
| 115 | 1 | $commentSingle = Compiler::pregQuote(self::$commentSingle); |
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| 116 | 1 | $commentMultiLeft = Compiler::pregQuote(self::$commentMultiLeft); |
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| 117 | 1 | $commentMultiRight = Compiler::pregQuote(self::$commentMultiRight); |
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| 118 | |||
| 119 | 1 | self::$commentMulti = $commentMultiLeft . '.*?' . $commentMultiRight; |
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| 120 | 1 | self::$whitePattern = '/' . $commentSingle . '[^\n]*\s*|(' . self::$commentMulti . ')\s*|\s+/Ais'; |
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| 121 | 1 | } |
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| 122 | 49 | } |
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| 123 | |||
| 124 | /** |
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| 125 | * @param $buffer |
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| 126 | * |
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| 127 | * @return mixed |
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| 128 | * @throws \LesserPhp\Exception\GeneralException |
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| 129 | */ |
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| 130 | 49 | public function parse($buffer) |
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| 131 | { |
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| 132 | 49 | $this->count = 0; |
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| 133 | 49 | $this->line = 1; |
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| 134 | |||
| 135 | 49 | $this->env = null; // block stack |
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| 136 | 49 | $this->buffer = $this->writeComments ? $buffer : $this->removeComments($buffer); |
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| 137 | 49 | $this->pushSpecialBlock('root'); |
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| 138 | 49 | $this->eatWhiteDefault = true; |
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| 139 | 49 | $this->seenComments = []; |
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| 140 | |||
| 141 | 49 | $this->whitespace(); |
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| 142 | |||
| 143 | // parse the entire file |
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| 144 | 49 | while (false !== $this->parseChunk()) { |
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| 145 | ; |
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| 146 | 49 | } |
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| 147 | |||
| 148 | 49 | if ($this->count !== strlen($this->buffer)) { |
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| 149 | // var_dump($this->count); |
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| 150 | // var_dump($this->buffer); |
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| 151 | $this->throwError(); |
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| 152 | } |
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| 153 | |||
| 154 | // TODO report where the block was opened |
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| 155 | 49 | if (!property_exists($this->env, 'parent') || $this->env->parent !== null) { |
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| 156 | throw new GeneralException('parse error: unclosed block'); |
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| 157 | } |
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| 158 | |||
| 159 | 49 | return $this->env; |
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| 160 | } |
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| 161 | |||
| 162 | /** |
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| 163 | * Parse a single chunk off the head of the buffer and append it to the |
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| 164 | * current parse environment. |
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| 165 | * Returns false when the buffer is empty, or when there is an error. |
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| 166 | * |
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| 167 | * This function is called repeatedly until the entire document is |
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| 168 | * parsed. |
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| 169 | * |
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| 170 | * This parser is most similar to a recursive descent parser. Single |
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| 171 | * functions represent discrete grammatical rules for the language, and |
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| 172 | * they are able to capture the text that represents those rules. |
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| 173 | * |
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| 174 | * Consider the function \LesserPhp\Compiler::keyword(). (all parse functions are |
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| 175 | * structured the same) |
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| 176 | * |
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| 177 | * The function takes a single reference argument. When calling the |
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| 178 | * function it will attempt to match a keyword on the head of the buffer. |
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| 179 | * If it is successful, it will place the keyword in the referenced |
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| 180 | * argument, advance the position in the buffer, and return true. If it |
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| 181 | * fails then it won't advance the buffer and it will return false. |
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| 182 | * |
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| 183 | * All of these parse functions are powered by \LesserPhp\Compiler::match(), which behaves |
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| 184 | * the same way, but takes a literal regular expression. Sometimes it is |
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| 185 | * more convenient to use match instead of creating a new function. |
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| 186 | * |
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| 187 | * Because of the format of the functions, to parse an entire string of |
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| 188 | * grammatical rules, you can chain them together using &&. |
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| 189 | * |
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| 190 | * But, if some of the rules in the chain succeed before one fails, then |
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| 191 | * the buffer position will be left at an invalid state. In order to |
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| 192 | * avoid this, \LesserPhp\Compiler::seek() is used to remember and set buffer positions. |
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| 193 | * |
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| 194 | * Before parsing a chain, use $s = $this->seek() to remember the current |
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| 195 | * position into $s. Then if a chain fails, use $this->seek($s) to |
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| 196 | * go back where we started. |
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| 197 | * @throws \LesserPhp\Exception\GeneralException |
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| 198 | */ |
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| 199 | 49 | protected function parseChunk() |
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| 200 | { |
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| 201 | 49 | if (empty($this->buffer)) { |
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| 202 | return false; |
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| 203 | } |
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| 204 | 49 | $s = $this->seek(); |
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| 205 | |||
| 206 | 49 | if ($this->whitespace()) { |
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| 207 | 46 | return true; |
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| 208 | } |
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| 209 | |||
| 210 | // setting a property |
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| 211 | 49 | if ($this->keyword($key) && $this->assign() && $this->propertyValue($value, $key) && $this->end()) { |
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| 212 | 47 | $this->append(['assign', $key, $value], $s); |
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| 213 | |||
| 214 | 47 | return true; |
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| 215 | } else { |
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| 216 | 49 | $this->seek($s); |
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| 217 | } |
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| 218 | |||
| 219 | // look for special css blocks |
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| 220 | 49 | if ($this->literal('@', false)) { |
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| 221 | 26 | $this->count--; |
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| 222 | |||
| 223 | // media |
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| 224 | 26 | if ($this->literal('@media')) { |
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| 225 | 3 | return $this->handleLiteralMedia($s); |
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| 226 | } |
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| 227 | |||
| 228 | 26 | if ($this->literal('@', false) && $this->keyword($directiveName)) { |
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| 229 | 26 | if ($this->isDirective($directiveName, $this->blockDirectives)) { |
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| 230 | 4 | if ($this->handleDirectiveBlock($directiveName) === true) { |
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| 231 | 4 | return true; |
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| 232 | } |
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| 233 | 25 | } elseif ($this->isDirective($directiveName, $this->lineDirectives)) { |
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| 234 | 1 | if ($this->handleDirectiveLine($directiveName) === true) { |
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| 235 | 1 | return true; |
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| 236 | } |
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| 237 | 25 | } elseif ($this->literal(':', true)) { |
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| 238 | 24 | if ($this->handleRulesetDefinition($directiveName) === true) { |
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| 239 | 1 | return true; |
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| 240 | } |
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| 241 | 23 | } |
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| 242 | 25 | } |
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| 243 | |||
| 244 | 25 | $this->seek($s); |
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| 245 | 25 | } |
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| 246 | |||
| 247 | 49 | if ($this->literal('&', false)) { |
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| 248 | 4 | $this->count--; |
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| 249 | 4 | if ($this->literal('&:extend')) { |
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| 250 | // hierauf folgt was in runden klammern, und zwar das element, das erweitert werden soll |
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| 251 | // heißt also, das was in klammern steht wird um die aktuellen klassen erweitert |
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| 252 | /* |
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| 253 | Aus |
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| 254 | |||
| 255 | nav ul { |
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| 256 | &:extend(.inline); |
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| 257 | background: blue; |
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| 258 | } |
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| 259 | .inline { |
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| 260 | color: red; |
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| 261 | } |
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| 262 | |||
| 263 | |||
| 264 | Wird: |
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| 265 | |||
| 266 | nav ul { |
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| 267 | background: blue; |
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| 268 | } |
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| 269 | .inline, |
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| 270 | nav ul { |
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| 271 | color: red; |
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| 272 | } |
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| 273 | |||
| 274 | */ |
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| 275 | // echo "Here we go"; |
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| 276 | } |
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| 277 | 4 | } |
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| 278 | |||
| 279 | |||
| 280 | // setting a variable |
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| 281 | 49 | if ($this->variable($var) && $this->assign() && |
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| 282 | 49 | $this->propertyValue($value) && $this->end() |
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| 283 | 49 | ) { |
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| 284 | 23 | $this->append(['assign', $var, $value], $s); |
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| 285 | |||
| 286 | 23 | return true; |
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| 287 | } else { |
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| 288 | 49 | $this->seek($s); |
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| 289 | } |
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| 290 | |||
| 291 | 49 | if ($this->import($importValue)) { |
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| 292 | 3 | $this->append($importValue, $s); |
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| 293 | |||
| 294 | 3 | return true; |
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| 295 | } |
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| 296 | |||
| 297 | // opening parametric mixin |
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| 298 | 49 | if ($this->tag($tag, true) && $this->argumentDef($args, $isVararg) && |
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| 299 | 49 | ($this->guards($guards) || true) && |
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| 300 | 19 | $this->literal('{') |
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| 301 | 49 | ) { |
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| 302 | 18 | $block = $this->pushBlock($this->fixTags([$tag])); |
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| 303 | 18 | $block->args = $args; |
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| 304 | 18 | $block->isVararg = $isVararg; |
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| 305 | 18 | if (!empty($guards)) { |
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| 306 | 5 | $block->guards = $guards; |
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| 307 | 5 | } |
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| 308 | |||
| 309 | 18 | return true; |
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| 310 | } else { |
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| 311 | 49 | $this->seek($s); |
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| 312 | } |
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| 313 | |||
| 314 | // opening a simple block |
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| 315 | 49 | if ($this->tags($tags) && $this->literal('{', false)) { |
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| 316 | 46 | $tags = $this->fixTags($tags); |
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| 317 | 46 | $this->pushBlock($tags); |
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| 318 | |||
| 319 | 46 | return true; |
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| 320 | } else { |
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| 321 | 49 | $this->seek($s); |
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| 322 | } |
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| 323 | |||
| 324 | // closing a block |
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| 325 | 49 | if ($this->literal('}', false)) { |
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| 326 | try { |
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| 327 | 46 | $block = $this->pop(); |
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| 328 | 46 | } catch (\Exception $e) { |
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| 329 | $this->seek($s); |
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| 330 | $this->throwError($e->getMessage()); |
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| 331 | } |
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| 332 | |||
| 333 | 46 | $hidden = false; |
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| 334 | 46 | if ($block->type === null) { |
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| 335 | 46 | $hidden = true; |
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| 336 | 46 | if (!isset($block->args)) { |
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| 337 | 46 | foreach ($block->tags as $tag) { |
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| 338 | 46 | if (!is_string($tag) || $tag[0] !== $this->lessc->getMPrefix()) { |
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| 339 | 46 | $hidden = false; |
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| 340 | 46 | break; |
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| 341 | } |
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| 342 | 46 | } |
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| 343 | 46 | } |
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| 344 | |||
| 345 | 46 | foreach ($block->tags as $tag) { |
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| 346 | 46 | if (is_string($tag)) { |
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| 347 | 46 | $this->env->children[$tag][] = $block; |
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| 348 | 46 | } |
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| 349 | 46 | } |
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| 350 | 46 | } |
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| 351 | |||
| 352 | 46 | if (!$hidden) { |
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| 353 | 46 | $this->append(['block', $block], $s); |
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| 354 | 46 | } |
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| 355 | |||
| 356 | // this is done here so comments aren't bundled into he block that |
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| 357 | // was just closed |
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| 358 | 46 | $this->whitespace(); |
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| 359 | |||
| 360 | 46 | return true; |
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| 361 | } |
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| 362 | |||
| 363 | // mixin |
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| 364 | 49 | if ($this->mixinTags($tags) && |
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| 365 | 49 | ($this->argumentDef($argv, $isVararg) || true) && |
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| 366 | 49 | ($this->keyword($suffix) || true) && $this->end() |
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| 367 | 49 | ) { |
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| 368 | 22 | $tags = $this->fixTags($tags); |
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| 369 | 22 | $this->append(['mixin', $tags, $argv, $suffix], $s); |
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| 370 | |||
| 371 | 22 | return true; |
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| 372 | } else { |
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| 373 | 49 | $this->seek($s); |
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| 374 | } |
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| 375 | |||
| 376 | // spare ; |
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| 377 | 49 | if ($this->literal(';')) { |
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| 378 | 4 | return true; |
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| 379 | } |
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| 380 | |||
| 381 | 49 | return false; // got nothing, throw error |
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| 382 | } |
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| 383 | |||
| 384 | /** |
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| 385 | * @param string $directiveName |
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| 386 | * @param array $directives |
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| 387 | * |
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| 388 | * @return bool |
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| 389 | */ |
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| 390 | 26 | protected function isDirective($directiveName, array $directives) |
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| 398 | |||
| 399 | /** |
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| 400 | * @param array $tags |
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| 401 | * |
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| 402 | * @return mixed |
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| 403 | */ |
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| 404 | 46 | protected function fixTags(array $tags) |
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| 405 | { |
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| 406 | // move @ tags out of variable namespace |
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| 407 | 46 | foreach ($tags as &$tag) { |
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| 408 | 46 | if ($tag[0] === $this->lessc->getVPrefix()) { |
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| 409 | 8 | $tag[0] = $this->lessc->getMPrefix(); |
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| 410 | 8 | } |
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| 411 | 46 | } |
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| 412 | |||
| 413 | 46 | return $tags; |
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| 414 | } |
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| 415 | |||
| 416 | /** |
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| 417 | * a list of expressions |
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| 418 | * |
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| 419 | * @param $exps |
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| 420 | * |
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| 421 | * @return bool |
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| 422 | */ |
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| 423 | 48 | protected function expressionList(&$exps) |
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| 424 | { |
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| 425 | 48 | $values = []; |
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| 426 | |||
| 427 | 48 | while ($this->expression($exp)) { |
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| 428 | 48 | $values[] = $exp; |
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| 429 | 48 | } |
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| 430 | |||
| 431 | 48 | if (count($values) === 0) { |
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| 432 | 26 | return false; |
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| 433 | } |
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| 434 | |||
| 435 | 48 | $exps = Compiler::compressList($values, ' '); |
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| 436 | |||
| 437 | 48 | return true; |
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| 438 | } |
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| 439 | |||
| 440 | /** |
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| 441 | * Attempt to consume an expression. |
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| 442 | * @link http://en.wikipedia.org/wiki/Operator-precedence_parser#Pseudo-code |
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| 443 | * |
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| 444 | * @param $out |
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| 445 | * |
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| 446 | * @return bool |
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| 447 | */ |
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| 448 | 48 | protected function expression(&$out) |
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| 449 | { |
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| 450 | 48 | if ($this->value($lhs)) { |
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| 451 | 48 | $out = $this->expHelper($lhs, 0); |
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| 452 | |||
| 453 | // look for / shorthand |
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| 454 | 48 | if (!empty($this->env->supressedDivision)) { |
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| 455 | 2 | unset($this->env->supressedDivision); |
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| 456 | 2 | $s = $this->seek(); |
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| 457 | 2 | if ($this->literal("/") && $this->value($rhs)) { |
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| 458 | $out = [ |
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| 459 | 2 | "list", |
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| 460 | 2 | "", |
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| 461 | 2 | [$out, ["keyword", "/"], $rhs], |
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| 462 | 2 | ]; |
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| 463 | 2 | } else { |
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| 464 | $this->seek($s); |
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| 465 | } |
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| 466 | 2 | } |
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| 467 | |||
| 468 | 48 | return true; |
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| 469 | } |
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| 470 | |||
| 471 | 48 | return false; |
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| 472 | } |
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| 473 | |||
| 474 | /** |
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| 475 | * recursively parse infix equation with $lhs at precedence $minP |
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| 476 | * |
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| 477 | * @param $lhs |
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| 478 | * @param $minP |
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| 479 | * |
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| 480 | * @return array |
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| 481 | */ |
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| 482 | 48 | protected function expHelper($lhs, $minP) |
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| 483 | { |
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| 484 | 48 | $this->inExp = true; |
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| 485 | 48 | $ss = $this->seek(); |
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| 486 | |||
| 487 | 48 | while (true) { |
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| 488 | 48 | $whiteBefore = isset($this->buffer[$this->count - 1]) && ctype_space($this->buffer[$this->count - 1]); |
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| 489 | |||
| 490 | // If there is whitespace before the operator, then we require |
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| 491 | // whitespace after the operator for it to be an expression |
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| 492 | 48 | $needWhite = $whiteBefore && !$this->inParens; |
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| 493 | |||
| 494 | 48 | if ($this->match(self::$operatorString . ($needWhite ? '\s' : ''), $m) && |
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| 495 | 20 | self::$precedence[$m[1]] >= $minP |
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| 496 | 48 | ) { |
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| 497 | 20 | if (!$this->inParens && |
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| 498 | 20 | isset($this->env->currentProperty) && |
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| 499 | 20 | $m[1] === '/' && |
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| 500 | empty($this->env->supressedDivision) |
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| 501 | 20 | ) { |
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| 502 | 5 | foreach (self::$supressDivisionProps as $pattern) { |
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| 503 | 5 | if (preg_match($pattern, $this->env->currentProperty)) { |
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| 504 | 2 | $this->env->supressedDivision = true; |
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| 505 | 2 | break 2; |
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| 506 | } |
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| 507 | 5 | } |
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| 508 | 4 | } |
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| 509 | |||
| 510 | 20 | $whiteAfter = isset($this->buffer[$this->count - 1]) && ctype_space($this->buffer[$this->count - 1]); |
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| 511 | |||
| 512 | 20 | if (!$this->value($rhs)) { |
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| 513 | break; |
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| 514 | } |
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| 515 | |||
| 516 | // peek for next operator to see what to do with rhs |
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| 517 | 20 | if ($this->peek(self::$operatorString, $next) && |
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| 518 | 3 | self::$precedence[$next[1]] > self::$precedence[$m[1]] |
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| 519 | 20 | ) { |
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| 520 | 1 | $rhs = $this->expHelper($rhs, self::$precedence[$next[1]]); |
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| 521 | 1 | } |
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| 522 | |||
| 523 | 20 | $lhs = ['expression', $m[1], $lhs, $rhs, $whiteBefore, $whiteAfter]; |
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| 524 | 20 | $ss = $this->seek(); |
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| 525 | |||
| 526 | 20 | continue; |
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| 527 | } |
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| 528 | |||
| 529 | 48 | break; |
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| 530 | } |
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| 531 | |||
| 532 | 48 | $this->seek($ss); |
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| 533 | |||
| 534 | 48 | return $lhs; |
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| 535 | } |
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| 536 | |||
| 537 | /** |
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| 538 | * consume a list of values for a property |
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| 539 | * |
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| 540 | * @param $value |
||
| 541 | * @param string $keyName |
||
| 542 | * |
||
| 543 | * @return bool |
||
| 544 | */ |
||
| 545 | 48 | public function propertyValue(&$value, $keyName = null) |
|
| 546 | { |
||
| 547 | 48 | $values = []; |
|
| 548 | |||
| 549 | 48 | if ($keyName !== null) { |
|
| 550 | 47 | $this->env->currentProperty = $keyName; |
|
| 551 | 47 | } |
|
| 552 | |||
| 553 | 48 | $s = null; |
|
| 554 | 48 | while ($this->expressionList($v)) { |
|
| 555 | 48 | $values[] = $v; |
|
| 556 | 48 | $s = $this->seek(); |
|
| 557 | 48 | if (!$this->literal(',')) { |
|
| 558 | 48 | break; |
|
| 559 | } |
||
| 560 | 7 | } |
|
| 561 | |||
| 562 | 48 | if ($s) { |
|
| 563 | 48 | $this->seek($s); |
|
| 564 | 48 | } |
|
| 565 | |||
| 566 | 48 | if ($keyName !== null) { |
|
| 567 | 47 | unset($this->env->currentProperty); |
|
| 568 | 47 | } |
|
| 569 | |||
| 570 | 48 | if (count($values) === 0) { |
|
| 571 | 3 | return false; |
|
| 572 | } |
||
| 573 | |||
| 574 | 48 | $value = Compiler::compressList($values, ', '); |
|
| 575 | |||
| 576 | 48 | return true; |
|
| 577 | } |
||
| 578 | |||
| 579 | /** |
||
| 580 | * @param $out |
||
| 581 | * |
||
| 582 | * @return bool |
||
| 583 | */ |
||
| 584 | 48 | protected function parenValue(&$out) |
|
| 585 | { |
||
| 586 | 48 | $s = $this->seek(); |
|
| 587 | |||
| 588 | // speed shortcut |
||
| 589 | 48 | if (isset($this->buffer[$this->count]) && $this->buffer[$this->count] !== "(") { |
|
| 590 | 48 | return false; |
|
| 591 | } |
||
| 592 | |||
| 593 | 5 | $inParens = $this->inParens; |
|
| 594 | 5 | if ($this->literal("(") && |
|
| 595 | 5 | ($this->inParens = true) && $this->expression($exp) && |
|
| 596 | 3 | $this->literal(")") |
|
| 597 | 5 | ) { |
|
| 598 | 3 | $out = $exp; |
|
| 599 | 3 | $this->inParens = $inParens; |
|
| 600 | |||
| 601 | 3 | return true; |
|
| 602 | } else { |
||
| 603 | 2 | $this->inParens = $inParens; |
|
| 604 | 2 | $this->seek($s); |
|
| 605 | } |
||
| 606 | |||
| 607 | 2 | return false; |
|
| 608 | } |
||
| 609 | |||
| 610 | /** |
||
| 611 | * a single value |
||
| 612 | * |
||
| 613 | * @param array $value |
||
| 614 | * |
||
| 615 | * @return bool |
||
| 616 | */ |
||
| 617 | 48 | protected function value(&$value) |
|
| 618 | { |
||
| 619 | 48 | $s = $this->seek(); |
|
| 620 | |||
| 621 | // speed shortcut |
||
| 622 | 48 | if (isset($this->buffer[$this->count]) && $this->buffer[$this->count] === "-") { |
|
| 623 | // negation |
||
| 624 | 7 | if ($this->literal("-", false) && |
|
| 625 | 7 | (($this->variable($inner) && $inner = ["variable", $inner]) || |
|
| 626 | 6 | $this->unit($inner) || |
|
| 627 | 3 | $this->parenValue($inner)) |
|
| 628 | 7 | ) { |
|
| 629 | 6 | $value = ["unary", "-", $inner]; |
|
| 630 | |||
| 631 | 6 | return true; |
|
| 632 | } else { |
||
| 633 | 2 | $this->seek($s); |
|
| 634 | } |
||
| 635 | 2 | } |
|
| 636 | |||
| 637 | 48 | if ($this->parenValue($value)) { |
|
| 638 | 3 | return true; |
|
| 639 | } |
||
| 640 | 48 | if ($this->unit($value)) { |
|
| 641 | 38 | return true; |
|
| 642 | } |
||
| 643 | 48 | if ($this->color($value)) { |
|
| 644 | 13 | return true; |
|
| 645 | } |
||
| 646 | 48 | if ($this->func($value)) { |
|
| 647 | 25 | return true; |
|
| 648 | } |
||
| 649 | 48 | if ($this->stringValue($value)) { |
|
| 650 | 21 | return true; |
|
| 651 | } |
||
| 652 | |||
| 653 | 48 | if ($this->keyword($word)) { |
|
| 654 | 35 | $value = ['keyword', $word]; |
|
| 655 | |||
| 656 | 35 | return true; |
|
| 657 | } |
||
| 658 | |||
| 659 | // try a variable |
||
| 660 | 48 | if ($this->variable($var)) { |
|
| 661 | 29 | $value = ['variable', $var]; |
|
| 662 | |||
| 663 | 29 | return true; |
|
| 664 | } |
||
| 665 | |||
| 666 | // unquote string (should this work on any type? |
||
| 667 | 48 | if ($this->literal("~") && $this->stringValue($str)) { |
|
| 668 | 4 | $value = ["escape", $str]; |
|
| 669 | |||
| 670 | 4 | return true; |
|
| 671 | } else { |
||
| 672 | 48 | $this->seek($s); |
|
| 673 | } |
||
| 674 | |||
| 675 | // css hack: \0 |
||
| 676 | 48 | if ($this->literal('\\') && $this->match('([0-9]+)', $m)) { |
|
| 677 | 1 | $value = ['keyword', '\\' . $m[1]]; |
|
| 678 | |||
| 679 | 1 | return true; |
|
| 680 | } else { |
||
| 681 | 48 | $this->seek($s); |
|
| 682 | } |
||
| 683 | |||
| 684 | 48 | return false; |
|
| 685 | } |
||
| 686 | |||
| 687 | /** |
||
| 688 | * an import statement |
||
| 689 | * |
||
| 690 | * @param array $out |
||
| 691 | * |
||
| 692 | * @return bool|null |
||
| 693 | */ |
||
| 694 | 49 | protected function import(&$out) |
|
| 712 | |||
| 713 | /** |
||
| 714 | * @param $out |
||
| 715 | * |
||
| 716 | * @return bool |
||
| 717 | */ |
||
| 718 | 3 | protected function mediaQueryList(&$out) |
|
| 728 | |||
| 729 | /** |
||
| 730 | * @param $out |
||
| 731 | * |
||
| 732 | * @return bool |
||
| 733 | */ |
||
| 734 | 3 | protected function mediaQuery(&$out) |
|
| 735 | { |
||
| 736 | 3 | $s = $this->seek(); |
|
| 737 | |||
| 738 | 3 | $expressions = null; |
|
| 739 | 3 | $parts = []; |
|
| 740 | |||
| 741 | 3 | if (($this->literal("only") && ($only = true) || $this->literal("not") && ($not = true) || true) && |
|
| 742 | 3 | $this->keyword($mediaType) |
|
| 743 | 3 | ) { |
|
| 744 | 3 | $prop = ["mediaType"]; |
|
| 745 | 3 | if (isset($only)) { |
|
| 746 | $prop[] = "only"; |
||
| 747 | } |
||
| 748 | 3 | if (isset($not)) { |
|
| 749 | $prop[] = "not"; |
||
| 750 | } |
||
| 751 | 3 | $prop[] = $mediaType; |
|
| 752 | 3 | $parts[] = $prop; |
|
| 753 | 3 | } else { |
|
| 754 | 1 | $this->seek($s); |
|
| 755 | } |
||
| 756 | |||
| 757 | |||
| 758 | 3 | if (!empty($mediaType) && !$this->literal("and")) { |
|
| 759 | // ~ |
||
| 760 | 3 | } else { |
|
| 761 | 1 | $this->genericList($expressions, "mediaExpression", "and", false); |
|
| 762 | 1 | if (is_array($expressions)) { |
|
| 763 | 1 | $parts = array_merge($parts, $expressions[2]); |
|
| 764 | 1 | } |
|
| 765 | } |
||
| 766 | |||
| 767 | 3 | if (count($parts) === 0) { |
|
| 768 | $this->seek($s); |
||
| 769 | |||
| 770 | return false; |
||
| 771 | } |
||
| 772 | |||
| 773 | 3 | $out = $parts; |
|
| 774 | |||
| 775 | 3 | return true; |
|
| 776 | } |
||
| 777 | |||
| 778 | /** |
||
| 779 | * @param $out |
||
| 780 | * |
||
| 781 | * @return bool |
||
| 782 | */ |
||
| 783 | 1 | protected function mediaExpression(&$out) |
|
| 784 | { |
||
| 785 | 1 | $s = $this->seek(); |
|
| 786 | 1 | $value = null; |
|
| 787 | 1 | if ($this->literal("(") && |
|
| 788 | 1 | $this->keyword($feature) && |
|
| 789 | 1 | ($this->literal(":") && $this->expression($value) || true) && |
|
| 790 | 1 | $this->literal(")") |
|
| 791 | 1 | ) { |
|
| 792 | 1 | $out = ["mediaExp", $feature]; |
|
| 793 | 1 | if ($value) { |
|
| 794 | 1 | $out[] = $value; |
|
| 795 | 1 | } |
|
| 796 | |||
| 797 | 1 | return true; |
|
| 798 | 1 | } elseif ($this->variable($variable)) { |
|
| 799 | 1 | $out = ['variable', $variable]; |
|
| 800 | |||
| 801 | 1 | return true; |
|
| 802 | } |
||
| 803 | |||
| 804 | $this->seek($s); |
||
| 805 | |||
| 806 | return false; |
||
| 807 | } |
||
| 808 | |||
| 809 | /** |
||
| 810 | * an unbounded string stopped by $end |
||
| 811 | * |
||
| 812 | * @param $end |
||
| 813 | * @param $out |
||
| 814 | * @param null $nestingOpen |
||
| 815 | * @param null $rejectStrs |
||
| 816 | * |
||
| 817 | * @return bool |
||
| 818 | */ |
||
| 819 | 26 | protected function openString($end, &$out, $nestingOpen = null, $rejectStrs = null) |
|
| 820 | { |
||
| 821 | 26 | $oldWhite = $this->eatWhiteDefault; |
|
| 822 | 26 | $this->eatWhiteDefault = false; |
|
| 823 | |||
| 824 | 26 | $stop = ["'", '"', "@{", $end]; |
|
| 825 | 26 | $stop = array_map([Compiler::class, 'pregQuote'], $stop); |
|
| 826 | // $stop[] = self::$commentMulti; |
||
| 827 | |||
| 828 | 26 | if ($rejectStrs !== null) { |
|
| 829 | 25 | $stop = array_merge($stop, $rejectStrs); |
|
| 830 | 25 | } |
|
| 831 | |||
| 832 | 26 | $patt = '(.*?)(' . implode("|", $stop) . ')'; |
|
| 833 | |||
| 834 | 26 | $nestingLevel = 0; |
|
| 835 | |||
| 836 | 26 | $content = []; |
|
| 837 | 26 | while ($this->match($patt, $m, false)) { |
|
| 838 | 26 | if (!empty($m[1])) { |
|
| 839 | 25 | $content[] = $m[1]; |
|
| 840 | 25 | if ($nestingOpen) { |
|
| 841 | $nestingLevel += substr_count($m[1], $nestingOpen); |
||
| 842 | } |
||
| 843 | 25 | } |
|
| 844 | |||
| 845 | 26 | $tok = $m[2]; |
|
| 846 | |||
| 847 | 26 | $this->count -= strlen($tok); |
|
| 848 | 26 | if ($tok == $end) { |
|
| 849 | 14 | if ($nestingLevel === 0) { |
|
| 850 | 14 | break; |
|
| 851 | } else { |
||
| 852 | $nestingLevel--; |
||
| 853 | } |
||
| 854 | } |
||
| 855 | |||
| 856 | 24 | if (($tok === "'" || $tok === '"') && $this->stringValue($str)) { |
|
| 857 | 13 | $content[] = $str; |
|
| 858 | 13 | continue; |
|
| 859 | } |
||
| 860 | |||
| 861 | 23 | if ($tok === "@{" && $this->interpolation($inter)) { |
|
| 862 | 3 | $content[] = $inter; |
|
| 863 | 3 | continue; |
|
| 864 | } |
||
| 865 | |||
| 866 | 23 | if (!empty($rejectStrs) && in_array($tok, $rejectStrs)) { |
|
| 867 | 23 | break; |
|
| 868 | } |
||
| 869 | |||
| 870 | $content[] = $tok; |
||
| 871 | $this->count += strlen($tok); |
||
| 872 | } |
||
| 873 | |||
| 874 | 26 | $this->eatWhiteDefault = $oldWhite; |
|
| 875 | |||
| 876 | 26 | if (count($content) === 0) { |
|
| 877 | 4 | return false; |
|
| 878 | } |
||
| 879 | |||
| 880 | // trim the end |
||
| 881 | 25 | if (is_string(end($content))) { |
|
| 882 | 25 | $content[count($content) - 1] = rtrim(end($content)); |
|
| 883 | 25 | } |
|
| 884 | |||
| 885 | 25 | $out = ["string", "", $content]; |
|
| 886 | |||
| 887 | 25 | return true; |
|
| 888 | } |
||
| 889 | |||
| 890 | /** |
||
| 891 | * @param $out |
||
| 892 | * |
||
| 893 | * @return bool |
||
| 894 | */ |
||
| 895 | 48 | protected function stringValue(&$out) |
|
| 896 | { |
||
| 897 | 48 | $s = $this->seek(); |
|
| 898 | 48 | if ($this->literal('"', false)) { |
|
| 899 | 22 | $delim = '"'; |
|
| 900 | 48 | } elseif ($this->literal("'", false)) { |
|
| 901 | 12 | $delim = "'"; |
|
| 902 | 12 | } else { |
|
| 903 | 48 | return false; |
|
| 904 | } |
||
| 905 | |||
| 906 | 24 | $content = []; |
|
| 907 | |||
| 908 | // look for either ending delim , escape, or string interpolation |
||
| 909 | $patt = '([^\n]*?)(@\{|\\\\|' . |
||
| 910 | 24 | Compiler::pregQuote($delim) . ')'; |
|
| 911 | |||
| 912 | 24 | $oldWhite = $this->eatWhiteDefault; |
|
| 913 | 24 | $this->eatWhiteDefault = false; |
|
| 914 | |||
| 915 | 24 | while ($this->match($patt, $m, false)) { |
|
| 916 | 24 | $content[] = $m[1]; |
|
| 917 | 24 | if ($m[2] === "@{") { |
|
| 918 | 6 | $this->count -= strlen($m[2]); |
|
| 919 | 6 | if ($this->interpolation($inter)) { |
|
| 920 | 6 | $content[] = $inter; |
|
| 921 | 6 | } else { |
|
| 922 | 1 | $this->count += strlen($m[2]); |
|
| 923 | 1 | $content[] = "@{"; // ignore it |
|
| 924 | } |
||
| 925 | 24 | } elseif ($m[2] === '\\') { |
|
| 926 | 2 | $content[] = $m[2]; |
|
| 927 | 2 | if ($this->literal($delim, false)) { |
|
| 928 | 2 | $content[] = $delim; |
|
| 929 | 2 | } |
|
| 930 | 2 | } else { |
|
| 931 | 24 | $this->count -= strlen($delim); |
|
| 932 | 24 | break; // delim |
|
| 933 | } |
||
| 934 | 6 | } |
|
| 935 | |||
| 936 | 24 | $this->eatWhiteDefault = $oldWhite; |
|
| 937 | |||
| 938 | 24 | if ($this->literal($delim)) { |
|
| 939 | 24 | $out = ["string", $delim, $content]; |
|
| 940 | |||
| 941 | 24 | return true; |
|
| 942 | } |
||
| 943 | |||
| 944 | 1 | $this->seek($s); |
|
| 945 | |||
| 946 | 1 | return false; |
|
| 947 | } |
||
| 948 | |||
| 949 | /** |
||
| 950 | * @param $out |
||
| 951 | * |
||
| 952 | * @return bool |
||
| 953 | */ |
||
| 954 | 19 | protected function interpolation(&$out) |
|
| 955 | { |
||
| 956 | 19 | $oldWhite = $this->eatWhiteDefault; |
|
| 957 | 19 | $this->eatWhiteDefault = true; |
|
| 958 | |||
| 959 | 19 | $s = $this->seek(); |
|
| 960 | 19 | if ($this->literal("@{") && |
|
| 961 | 19 | $this->openString("}", $interp, null, ["'", '"', ";"]) && |
|
| 962 | 7 | $this->literal("}", false) |
|
| 963 | 19 | ) { |
|
| 964 | 7 | $out = ["interpolate", $interp]; |
|
| 965 | 7 | $this->eatWhiteDefault = $oldWhite; |
|
| 966 | 7 | if ($this->eatWhiteDefault) { |
|
| 967 | 1 | $this->whitespace(); |
|
| 968 | 1 | } |
|
| 969 | |||
| 970 | 7 | return true; |
|
| 971 | } |
||
| 972 | |||
| 973 | 16 | $this->eatWhiteDefault = $oldWhite; |
|
| 974 | 16 | $this->seek($s); |
|
| 975 | |||
| 976 | 16 | return false; |
|
| 977 | } |
||
| 978 | |||
| 979 | /** |
||
| 980 | * @param $unit |
||
| 981 | * |
||
| 982 | * @return bool |
||
| 983 | */ |
||
| 984 | 49 | protected function unit(&$unit) |
|
| 985 | { |
||
| 986 | // speed shortcut |
||
| 987 | 49 | if (isset($this->buffer[$this->count])) { |
|
| 988 | 49 | $char = $this->buffer[$this->count]; |
|
| 989 | 49 | if (!ctype_digit($char) && $char !== ".") { |
|
| 990 | 49 | return false; |
|
| 991 | } |
||
| 992 | 38 | } |
|
| 993 | |||
| 994 | 49 | if ($this->match('([0-9]+(?:\.[0-9]*)?|\.[0-9]+)([%a-zA-Z]+)?', $m)) { |
|
| 995 | 38 | $unit = ["number", $m[1], empty($m[2]) ? "" : $m[2]]; |
|
| 996 | |||
| 997 | 38 | return true; |
|
| 998 | } |
||
| 999 | |||
| 1000 | 49 | return false; |
|
| 1001 | } |
||
| 1002 | |||
| 1003 | |||
| 1004 | /** |
||
| 1005 | * a # color |
||
| 1006 | * |
||
| 1007 | * @param $out |
||
| 1008 | * |
||
| 1009 | * @return bool |
||
| 1010 | */ |
||
| 1011 | 48 | protected function color(&$out) |
|
| 1012 | { |
||
| 1013 | 48 | if ($this->match('(#(?:[0-9a-f]{8}|[0-9a-f]{6}|[0-9a-f]{3}))', $m)) { |
|
| 1014 | 13 | if (strlen($m[1]) > 7) { |
|
| 1015 | 1 | $out = ["string", "", [$m[1]]]; |
|
| 1016 | 1 | } else { |
|
| 1017 | 13 | $out = ["raw_color", $m[1]]; |
|
| 1018 | } |
||
| 1019 | |||
| 1020 | 13 | return true; |
|
| 1021 | } |
||
| 1022 | |||
| 1023 | 48 | return false; |
|
| 1024 | } |
||
| 1025 | |||
| 1026 | /** |
||
| 1027 | * consume an argument definition list surrounded by () |
||
| 1028 | * each argument is a variable name with optional value |
||
| 1029 | * or at the end a ... or a variable named followed by ... |
||
| 1030 | * arguments are separated by , unless a ; is in the list, then ; is the |
||
| 1031 | * delimiter. |
||
| 1032 | * |
||
| 1033 | * @param $args |
||
| 1034 | * @param $isVararg |
||
| 1035 | * |
||
| 1036 | * @return bool |
||
| 1037 | * @throws \LesserPhp\Exception\GeneralException |
||
| 1038 | */ |
||
| 1039 | 45 | protected function argumentDef(&$args, &$isVararg) |
|
| 1040 | { |
||
| 1041 | 45 | $s = $this->seek(); |
|
| 1042 | 45 | if (!$this->literal('(')) { |
|
| 1043 | 45 | return false; |
|
| 1044 | } |
||
| 1045 | |||
| 1046 | 19 | $values = []; |
|
| 1047 | 19 | $delim = ","; |
|
| 1048 | 19 | $method = "expressionList"; |
|
| 1049 | |||
| 1050 | 19 | $isVararg = false; |
|
| 1051 | 19 | while (true) { |
|
| 1052 | 19 | if ($this->literal("...")) { |
|
| 1053 | 2 | $isVararg = true; |
|
| 1054 | 2 | break; |
|
| 1055 | } |
||
| 1056 | |||
| 1057 | 19 | if ($this->$method($value)) { |
|
| 1058 | 16 | if ($value[0] === "variable") { |
|
| 1059 | 16 | $arg = ["arg", $value[1]]; |
|
| 1060 | 16 | $ss = $this->seek(); |
|
| 1061 | |||
| 1062 | 16 | if ($this->assign() && $this->$method($rhs)) { |
|
| 1063 | 9 | $arg[] = $rhs; |
|
| 1064 | 9 | } else { |
|
| 1065 | 13 | $this->seek($ss); |
|
| 1066 | 13 | if ($this->literal("...")) { |
|
| 1067 | 2 | $arg[0] = "rest"; |
|
| 1068 | 2 | $isVararg = true; |
|
| 1069 | 2 | } |
|
| 1070 | } |
||
| 1071 | |||
| 1072 | 16 | $values[] = $arg; |
|
| 1073 | 16 | if ($isVararg) { |
|
| 1074 | 2 | break; |
|
| 1075 | } |
||
| 1076 | 16 | continue; |
|
| 1077 | } else { |
||
| 1078 | 15 | $values[] = ["lit", $value]; |
|
| 1079 | } |
||
| 1080 | 15 | } |
|
| 1081 | |||
| 1082 | |||
| 1083 | 19 | if (!$this->literal($delim)) { |
|
| 1084 | 19 | if ($delim === "," && $this->literal(";")) { |
|
| 1085 | // found new delim, convert existing args |
||
| 1086 | 2 | $delim = ";"; |
|
| 1087 | 2 | $method = "propertyValue"; |
|
| 1088 | 2 | $newArg = null; |
|
| 1089 | |||
| 1090 | // transform arg list |
||
| 1091 | 2 | if (isset($values[1])) { // 2 items |
|
| 1092 | 2 | $newList = []; |
|
| 1093 | 2 | foreach ($values as $i => $arg) { |
|
| 1094 | 2 | switch ($arg[0]) { |
|
| 1095 | 2 | case "arg": |
|
| 1096 | 2 | if ($i) { |
|
| 1097 | throw new GeneralException("Cannot mix ; and , as delimiter types"); |
||
| 1098 | } |
||
| 1099 | 2 | $newList[] = $arg[2]; |
|
| 1100 | 2 | break; |
|
| 1101 | 2 | case "lit": |
|
| 1102 | 2 | $newList[] = $arg[1]; |
|
| 1103 | 2 | break; |
|
| 1104 | case "rest": |
||
| 1105 | throw new GeneralException("Unexpected rest before semicolon"); |
||
| 1106 | 2 | } |
|
| 1107 | 2 | } |
|
| 1108 | |||
| 1109 | 2 | $newList = ["list", ", ", $newList]; |
|
| 1110 | |||
| 1111 | 2 | switch ($values[0][0]) { |
|
| 1112 | 2 | case "arg": |
|
| 1113 | 2 | $newArg = ["arg", $values[0][1], $newList]; |
|
| 1114 | 2 | break; |
|
| 1115 | 1 | case "lit": |
|
| 1116 | 1 | $newArg = ["lit", $newList]; |
|
| 1117 | 1 | break; |
|
| 1118 | 2 | } |
|
| 1119 | 2 | } elseif ($values) { // 1 item |
|
| 1120 | 2 | $newArg = $values[0]; |
|
| 1121 | 2 | } |
|
| 1122 | |||
| 1123 | 2 | if ($newArg !== null) { |
|
| 1124 | 2 | $values = [$newArg]; |
|
| 1125 | 2 | } |
|
| 1126 | 2 | } else { |
|
| 1127 | 19 | break; |
|
| 1128 | } |
||
| 1129 | 2 | } |
|
| 1130 | 9 | } |
|
| 1131 | |||
| 1132 | 19 | if (!$this->literal(')')) { |
|
| 1133 | $this->seek($s); |
||
| 1134 | |||
| 1135 | return false; |
||
| 1136 | } |
||
| 1137 | |||
| 1138 | 19 | $args = $values; |
|
| 1139 | |||
| 1140 | 19 | return true; |
|
| 1141 | } |
||
| 1142 | |||
| 1143 | /** |
||
| 1144 | * consume a list of tags |
||
| 1145 | * this accepts a hanging delimiter |
||
| 1146 | * |
||
| 1147 | * @param array $tags |
||
| 1148 | * @param bool $simple |
||
| 1149 | * @param string $delim |
||
| 1150 | * |
||
| 1151 | * @return bool |
||
| 1152 | */ |
||
| 1153 | 49 | protected function tags(&$tags, $simple = false, $delim = ',') |
|
| 1154 | { |
||
| 1155 | 49 | $tags = []; |
|
| 1156 | 49 | while ($this->tag($tt, $simple)) { |
|
| 1157 | 46 | $tags[] = $tt; |
|
| 1158 | 46 | if (!$this->literal($delim)) { |
|
| 1159 | 46 | break; |
|
| 1160 | } |
||
| 1161 | 17 | } |
|
| 1162 | |||
| 1163 | 49 | return count($tags) !== 0; |
|
| 1164 | } |
||
| 1165 | |||
| 1166 | /** |
||
| 1167 | * list of tags of specifying mixin path |
||
| 1168 | * optionally separated by > (lazy, accepts extra >) |
||
| 1169 | * |
||
| 1170 | * @param array $tags |
||
| 1171 | * |
||
| 1172 | * @return bool |
||
| 1173 | */ |
||
| 1174 | 49 | protected function mixinTags(&$tags) |
|
| 1175 | { |
||
| 1176 | 49 | $tags = []; |
|
| 1177 | 49 | while ($this->tag($tt, true)) { |
|
| 1178 | 22 | $tags[] = $tt; |
|
| 1179 | 22 | $this->literal(">"); |
|
| 1180 | 22 | } |
|
| 1181 | |||
| 1182 | 49 | return count($tags) !== 0; |
|
| 1183 | } |
||
| 1184 | |||
| 1185 | /** |
||
| 1186 | * a bracketed value (contained within in a tag definition) |
||
| 1187 | * |
||
| 1188 | * @param array $parts |
||
| 1189 | * @param bool $hasExpression |
||
| 1190 | * |
||
| 1191 | * @return bool |
||
| 1192 | */ |
||
| 1193 | 49 | protected function tagBracket(&$parts, &$hasExpression) |
|
| 1194 | { |
||
| 1195 | // speed shortcut |
||
| 1196 | 49 | if (isset($this->buffer[$this->count]) && $this->buffer[$this->count] !== "[") { |
|
| 1197 | 47 | return false; |
|
| 1198 | } |
||
| 1199 | |||
| 1200 | 49 | $s = $this->seek(); |
|
| 1201 | |||
| 1202 | 49 | $hasInterpolation = false; |
|
| 1203 | |||
| 1204 | 49 | if ($this->literal("[", false)) { |
|
| 1205 | 3 | $attrParts = ["["]; |
|
| 1206 | // keyword, string, operator |
||
| 1207 | 3 | while (true) { |
|
| 1208 | 3 | if ($this->literal("]", false)) { |
|
| 1209 | 3 | $this->count--; |
|
| 1210 | 3 | break; // get out early |
|
| 1211 | } |
||
| 1212 | |||
| 1213 | 3 | if ($this->match('\s+', $m)) { |
|
| 1214 | $attrParts[] = " "; |
||
| 1215 | continue; |
||
| 1216 | } |
||
| 1217 | 3 | if ($this->stringValue($str)) { |
|
| 1218 | // escape parent selector, (yuck) |
||
| 1219 | 3 | foreach ($str[2] as &$chunk) { |
|
| 1220 | 3 | $chunk = str_replace($this->lessc->getParentSelector(), '$&$', $chunk); |
|
| 1221 | 3 | } |
|
| 1222 | |||
| 1223 | 3 | $attrParts[] = $str; |
|
| 1224 | 3 | $hasInterpolation = true; |
|
| 1225 | 3 | continue; |
|
| 1226 | } |
||
| 1227 | |||
| 1228 | 3 | if ($this->keyword($word)) { |
|
| 1229 | 3 | $attrParts[] = $word; |
|
| 1230 | 3 | continue; |
|
| 1231 | } |
||
| 1232 | |||
| 1233 | 3 | if ($this->interpolation($inter)) { |
|
| 1234 | 1 | $attrParts[] = $inter; |
|
| 1235 | 1 | $hasInterpolation = true; |
|
| 1236 | 1 | continue; |
|
| 1237 | } |
||
| 1238 | |||
| 1239 | // operator, handles attr namespace too |
||
| 1240 | 3 | if ($this->match('[|-~\$\*\^=]+', $m)) { |
|
| 1241 | 3 | $attrParts[] = $m[0]; |
|
| 1242 | 3 | continue; |
|
| 1243 | } |
||
| 1244 | |||
| 1245 | break; |
||
| 1246 | } |
||
| 1247 | |||
| 1248 | 3 | if ($this->literal("]", false)) { |
|
| 1249 | 3 | $attrParts[] = "]"; |
|
| 1250 | 3 | foreach ($attrParts as $part) { |
|
| 1251 | 3 | $parts[] = $part; |
|
| 1252 | 3 | } |
|
| 1253 | 3 | $hasExpression = $hasExpression || $hasInterpolation; |
|
| 1254 | |||
| 1255 | 3 | return true; |
|
| 1256 | } |
||
| 1257 | $this->seek($s); |
||
| 1258 | } |
||
| 1259 | |||
| 1260 | 49 | $this->seek($s); |
|
| 1261 | |||
| 1262 | 49 | return false; |
|
| 1263 | } |
||
| 1264 | |||
| 1265 | /** |
||
| 1266 | * a space separated list of selectors |
||
| 1267 | * |
||
| 1268 | * @param $tag |
||
| 1269 | * @param bool $simple |
||
| 1270 | * |
||
| 1271 | * @return bool |
||
| 1272 | */ |
||
| 1273 | 49 | protected function tag(&$tag, $simple = false) |
|
| 1274 | { |
||
| 1275 | 49 | if ($simple) { |
|
| 1276 | 49 | $chars = '^@,:;{}\][>\(\) "\''; |
|
| 1277 | 49 | } else { |
|
| 1278 | 49 | $chars = '^@,;{}["\''; |
|
| 1279 | } |
||
| 1280 | |||
| 1281 | 49 | $s = $this->seek(); |
|
| 1282 | |||
| 1283 | 49 | $hasExpression = false; |
|
| 1284 | 49 | $parts = []; |
|
| 1285 | 49 | while ($this->tagBracket($parts, $hasExpression)) { |
|
| 1286 | ; |
||
| 1287 | 2 | } |
|
| 1288 | |||
| 1289 | 49 | $oldWhite = $this->eatWhiteDefault; |
|
| 1290 | 49 | $this->eatWhiteDefault = false; |
|
| 1291 | |||
| 1292 | 49 | while (true) { |
|
| 1293 | 49 | if ($this->match('([' . $chars . '0-9][' . $chars . ']*)', $m)) { |
|
| 1294 | 46 | $parts[] = $m[1]; |
|
| 1295 | 46 | if ($simple) { |
|
| 1296 | 45 | break; |
|
| 1297 | } |
||
| 1298 | |||
| 1299 | 46 | while ($this->tagBracket($parts, $hasExpression)) { |
|
| 1300 | ; |
||
| 1301 | 2 | } |
|
| 1302 | 46 | continue; |
|
| 1303 | } |
||
| 1304 | |||
| 1305 | 49 | if (isset($this->buffer[$this->count]) && $this->buffer[$this->count] === "@") { |
|
| 1306 | 13 | if ($this->interpolation($interp)) { |
|
| 1307 | 2 | $hasExpression = true; |
|
| 1308 | 2 | $interp[2] = true; // don't unescape |
|
| 1309 | 2 | $parts[] = $interp; |
|
| 1310 | 2 | continue; |
|
| 1311 | } |
||
| 1312 | |||
| 1313 | 12 | if ($this->literal("@")) { |
|
| 1314 | 12 | $parts[] = "@"; |
|
| 1315 | 12 | continue; |
|
| 1316 | } |
||
| 1317 | } |
||
| 1318 | |||
| 1319 | 49 | if ($this->unit($unit)) { // for keyframes |
|
| 1320 | 9 | $parts[] = $unit[1]; |
|
| 1321 | 9 | $parts[] = $unit[2]; |
|
| 1322 | 9 | continue; |
|
| 1323 | } |
||
| 1324 | |||
| 1325 | 49 | break; |
|
| 1326 | } |
||
| 1327 | |||
| 1328 | 49 | $this->eatWhiteDefault = $oldWhite; |
|
| 1329 | 49 | if (!$parts) { |
|
| 1330 | 49 | $this->seek($s); |
|
| 1331 | |||
| 1332 | 49 | return false; |
|
| 1333 | } |
||
| 1334 | |||
| 1335 | 46 | if ($hasExpression) { |
|
| 1336 | 4 | $tag = ["exp", ["string", "", $parts]]; |
|
| 1337 | 4 | } else { |
|
| 1338 | 46 | $tag = trim(implode($parts)); |
|
| 1339 | } |
||
| 1340 | |||
| 1341 | 46 | $this->whitespace(); |
|
| 1342 | |||
| 1343 | 46 | return true; |
|
| 1344 | } |
||
| 1345 | |||
| 1346 | /** |
||
| 1347 | * a css function |
||
| 1348 | * |
||
| 1349 | * @param array $func |
||
| 1350 | * |
||
| 1351 | * @return bool |
||
| 1352 | */ |
||
| 1353 | 48 | protected function func(&$func) |
|
| 1354 | { |
||
| 1355 | 48 | $s = $this->seek(); |
|
| 1356 | |||
| 1357 | 48 | if ($this->match('(%|[\w\-_][\w\-_:\.]+|[\w_])', $m) && $this->literal('(')) { |
|
| 1358 | 25 | $fname = $m[1]; |
|
| 1359 | |||
| 1360 | 25 | $sPreArgs = $this->seek(); |
|
| 1361 | |||
| 1362 | 25 | $args = []; |
|
| 1363 | 25 | while (true) { |
|
| 1364 | 25 | $ss = $this->seek(); |
|
| 1365 | // this ugly nonsense is for ie filter properties |
||
| 1366 | 25 | if ($this->keyword($name) && $this->literal('=') && $this->expressionList($value)) { |
|
| 1367 | 1 | $args[] = ["string", "", [$name, "=", $value]]; |
|
| 1368 | 1 | } else { |
|
| 1369 | 24 | $this->seek($ss); |
|
| 1370 | 24 | if ($this->expressionList($value)) { |
|
| 1371 | 21 | $args[] = $value; |
|
| 1372 | 21 | } |
|
| 1373 | } |
||
| 1374 | |||
| 1375 | 25 | if (!$this->literal(',')) { |
|
| 1376 | 25 | break; |
|
| 1377 | } |
||
| 1378 | 12 | } |
|
| 1379 | 25 | $args = ['list', ',', $args]; |
|
| 1380 | |||
| 1381 | 25 | if ($this->literal(')')) { |
|
| 1382 | 25 | $func = ['function', $fname, $args]; |
|
| 1383 | |||
| 1384 | 25 | return true; |
|
| 1385 | 7 | } elseif ($fname === 'url') { |
|
| 1386 | // couldn't parse and in url? treat as string |
||
| 1387 | 6 | $this->seek($sPreArgs); |
|
| 1388 | 6 | if ($this->openString(")", $string) && $this->literal(")")) { |
|
| 1389 | 6 | $func = ['function', $fname, $string]; |
|
| 1390 | |||
| 1391 | 6 | return true; |
|
| 1392 | } |
||
| 1393 | } |
||
| 1394 | 1 | } |
|
| 1395 | |||
| 1396 | 48 | $this->seek($s); |
|
| 1397 | |||
| 1398 | 48 | return false; |
|
| 1399 | } |
||
| 1400 | |||
| 1401 | /** |
||
| 1402 | * consume a less variable |
||
| 1403 | * |
||
| 1404 | * @param $name |
||
| 1405 | * |
||
| 1406 | * @return bool |
||
| 1407 | */ |
||
| 1408 | 49 | protected function variable(&$name) |
|
| 1409 | { |
||
| 1410 | 49 | $s = $this->seek(); |
|
| 1411 | 49 | if ($this->literal($this->lessc->getVPrefix(), false) && |
|
| 1412 | 32 | ($this->variable($sub) || $this->keyword($name)) |
|
| 1413 | 49 | ) { |
|
| 1414 | 32 | if (!empty($sub)) { |
|
| 1415 | 1 | $name = ['variable', $sub]; |
|
| 1416 | 1 | } else { |
|
| 1417 | 32 | $name = $this->lessc->getVPrefix() . $name; |
|
| 1418 | } |
||
| 1419 | |||
| 1420 | 32 | return true; |
|
| 1421 | } |
||
| 1422 | |||
| 1423 | 49 | $name = null; |
|
| 1424 | 49 | $this->seek($s); |
|
| 1425 | |||
| 1426 | 49 | return false; |
|
| 1427 | } |
||
| 1428 | |||
| 1429 | /** |
||
| 1430 | * Consume an assignment operator |
||
| 1431 | * Can optionally take a name that will be set to the current property name |
||
| 1432 | * |
||
| 1433 | * @param string $name |
||
| 1434 | * |
||
| 1435 | * @return bool |
||
| 1436 | */ |
||
| 1437 | 48 | protected function assign($name = null) |
|
| 1438 | { |
||
| 1439 | 48 | if ($name !== null) { |
|
| 1440 | $this->currentProperty = $name; |
||
| 1441 | } |
||
| 1442 | |||
| 1443 | 48 | return $this->literal(':') || $this->literal('='); |
|
| 1444 | } |
||
| 1445 | |||
| 1446 | /** |
||
| 1447 | * consume a keyword |
||
| 1448 | * |
||
| 1449 | * @param $word |
||
| 1450 | * |
||
| 1451 | * @return bool |
||
| 1452 | */ |
||
| 1453 | 49 | protected function keyword(&$word) |
|
| 1463 | |||
| 1464 | /** |
||
| 1465 | * consume an end of statement delimiter |
||
| 1466 | * |
||
| 1467 | * @return bool |
||
| 1468 | */ |
||
| 1469 | 48 | protected function end() |
|
| 1480 | |||
| 1481 | /** |
||
| 1482 | * @param $guards |
||
| 1483 | * |
||
| 1484 | * @return bool |
||
| 1485 | */ |
||
| 1486 | 19 | protected function guards(&$guards) |
|
| 1487 | { |
||
| 1488 | 19 | $s = $this->seek(); |
|
| 1489 | |||
| 1490 | 19 | if (!$this->literal("when")) { |
|
| 1491 | 19 | $this->seek($s); |
|
| 1492 | |||
| 1493 | 19 | return false; |
|
| 1494 | } |
||
| 1495 | |||
| 1496 | 5 | $guards = []; |
|
| 1497 | |||
| 1498 | 5 | while ($this->guardGroup($g)) { |
|
| 1499 | 5 | $guards[] = $g; |
|
| 1500 | 5 | if (!$this->literal(",")) { |
|
| 1501 | 5 | break; |
|
| 1502 | } |
||
| 1503 | 1 | } |
|
| 1504 | |||
| 1505 | 5 | if (count($guards) === 0) { |
|
| 1506 | $guards = null; |
||
| 1507 | $this->seek($s); |
||
| 1508 | |||
| 1509 | return false; |
||
| 1510 | } |
||
| 1511 | |||
| 1512 | 5 | return true; |
|
| 1513 | } |
||
| 1514 | |||
| 1515 | /** |
||
| 1516 | * a bunch of guards that are and'd together |
||
| 1517 | * |
||
| 1518 | * @param $guardGroup |
||
| 1519 | * |
||
| 1520 | * @return bool |
||
| 1521 | */ |
||
| 1522 | 5 | protected function guardGroup(&$guardGroup) |
|
| 1523 | { |
||
| 1524 | 5 | $s = $this->seek(); |
|
| 1525 | 5 | $guardGroup = []; |
|
| 1526 | 5 | while ($this->guard($guard)) { |
|
| 1527 | 5 | $guardGroup[] = $guard; |
|
| 1528 | 5 | if (!$this->literal("and")) { |
|
| 1529 | 5 | break; |
|
| 1530 | } |
||
| 1531 | 1 | } |
|
| 1532 | |||
| 1533 | 5 | if (count($guardGroup) === 0) { |
|
| 1534 | $guardGroup = null; |
||
| 1535 | $this->seek($s); |
||
| 1536 | |||
| 1537 | return false; |
||
| 1538 | } |
||
| 1539 | |||
| 1540 | 5 | return true; |
|
| 1541 | } |
||
| 1542 | |||
| 1543 | /** |
||
| 1544 | * @param $guard |
||
| 1545 | * |
||
| 1546 | * @return bool |
||
| 1547 | */ |
||
| 1548 | 5 | protected function guard(&$guard) |
|
| 1549 | { |
||
| 1550 | 5 | $s = $this->seek(); |
|
| 1551 | 5 | $negate = $this->literal("not"); |
|
| 1552 | |||
| 1553 | 5 | if ($this->literal("(") && $this->expression($exp) && $this->literal(")")) { |
|
| 1554 | 5 | $guard = $exp; |
|
| 1555 | 5 | if ($negate) { |
|
| 1556 | 1 | $guard = ["negate", $guard]; |
|
| 1557 | 1 | } |
|
| 1558 | |||
| 1559 | 5 | return true; |
|
| 1560 | } |
||
| 1561 | |||
| 1562 | $this->seek($s); |
||
| 1563 | |||
| 1564 | return false; |
||
| 1565 | } |
||
| 1566 | |||
| 1567 | /* raw parsing functions */ |
||
| 1568 | |||
| 1569 | /** |
||
| 1570 | * @param string $what |
||
| 1571 | * @param bool $eatWhitespace |
||
| 1572 | * |
||
| 1573 | * @return bool |
||
| 1574 | */ |
||
| 1575 | 49 | protected function literal($what, $eatWhitespace = null) |
|
| 1576 | { |
||
| 1577 | 49 | if ($eatWhitespace === null) { |
|
| 1578 | 49 | $eatWhitespace = $this->eatWhiteDefault; |
|
| 1579 | 49 | } |
|
| 1580 | |||
| 1581 | // shortcut on single letter |
||
| 1582 | 49 | if (!isset($what[1]) && isset($this->buffer[$this->count])) { |
|
| 1583 | 49 | if ($this->buffer[$this->count] === $what) { |
|
| 1584 | 49 | if (!$eatWhitespace) { |
|
| 1585 | 49 | $this->count++; |
|
| 1586 | |||
| 1587 | 49 | return true; |
|
| 1588 | } |
||
| 1589 | // goes below... |
||
| 1590 | 48 | } else { |
|
| 1591 | 49 | return false; |
|
| 1592 | } |
||
| 1593 | 48 | } |
|
| 1594 | |||
| 1595 | 49 | if (!isset(self::$literalCache[$what])) { |
|
| 1596 | 11 | self::$literalCache[$what] = Compiler::pregQuote($what); |
|
| 1597 | 11 | } |
|
| 1598 | |||
| 1599 | 49 | return $this->match(self::$literalCache[$what], $m, $eatWhitespace); |
|
| 1600 | } |
||
| 1601 | |||
| 1602 | /** |
||
| 1603 | * @param $out |
||
| 1604 | * @param string $parseItem |
||
| 1605 | * @param string $delim |
||
| 1606 | * @param bool $flatten |
||
| 1607 | * |
||
| 1608 | * @return bool |
||
| 1609 | */ |
||
| 1610 | 3 | protected function genericList(&$out, $parseItem, $delim = "", $flatten = true) |
|
| 1611 | { |
||
| 1612 | // $parseItem is one of mediaQuery, mediaExpression |
||
| 1613 | 3 | $s = $this->seek(); |
|
| 1614 | 3 | $items = []; |
|
| 1615 | 3 | while ($this->$parseItem($value)) { |
|
| 1616 | 3 | $items[] = $value; |
|
| 1617 | 3 | if ($delim) { |
|
| 1618 | 3 | if (!$this->literal($delim)) { |
|
| 1619 | 3 | break; |
|
| 1620 | } |
||
| 1621 | 1 | } |
|
| 1622 | 1 | } |
|
| 1623 | |||
| 1624 | 3 | if (count($items) === 0) { |
|
| 1625 | $this->seek($s); |
||
| 1626 | |||
| 1627 | return false; |
||
| 1628 | } |
||
| 1629 | |||
| 1630 | 3 | if ($flatten && count($items) === 1) { |
|
| 1631 | $out = $items[0]; |
||
| 1632 | } else { |
||
| 1633 | 3 | $out = ["list", $delim, $items]; |
|
| 1634 | } |
||
| 1635 | |||
| 1636 | 3 | return true; |
|
| 1637 | } |
||
| 1638 | |||
| 1639 | /** |
||
| 1640 | * advance counter to next occurrence of $what |
||
| 1641 | * $until - don't include $what in advance |
||
| 1642 | * $allowNewline, if string, will be used as valid char set |
||
| 1643 | * |
||
| 1644 | * @param $what |
||
| 1645 | * @param $out |
||
| 1646 | * @param bool $until |
||
| 1647 | * @param bool $allowNewline |
||
| 1648 | * |
||
| 1649 | * @return bool |
||
| 1650 | */ |
||
| 1651 | protected function to($what, &$out, $until = false, $allowNewline = false) |
||
| 1669 | |||
| 1670 | /** |
||
| 1671 | * try to match something on head of buffer |
||
| 1672 | * |
||
| 1673 | * @param string $regex |
||
| 1674 | * @param $out |
||
| 1675 | * @param bool $eatWhitespace |
||
| 1676 | * |
||
| 1677 | * @return bool |
||
| 1678 | */ |
||
| 1679 | 49 | protected function match($regex, &$out, $eatWhitespace = null) |
|
| 1680 | { |
||
| 1681 | 49 | if ($eatWhitespace === null) { |
|
| 1682 | 49 | $eatWhitespace = $this->eatWhiteDefault; |
|
| 1683 | 49 | } |
|
| 1684 | |||
| 1685 | 49 | $r = '/' . $regex . ($eatWhitespace && !$this->writeComments ? '\s*' : '') . '/Ais'; |
|
| 1686 | 49 | if (preg_match($r, $this->buffer, $out, null, $this->count)) { |
|
| 1687 | 49 | $this->count += strlen($out[0]); |
|
| 1688 | 49 | if ($eatWhitespace && $this->writeComments) { |
|
| 1689 | 1 | $this->whitespace(); |
|
| 1690 | 1 | } |
|
| 1691 | |||
| 1692 | 49 | return true; |
|
| 1693 | } |
||
| 1694 | |||
| 1695 | 49 | return false; |
|
| 1696 | } |
||
| 1697 | |||
| 1698 | /** |
||
| 1699 | * match some whitespace |
||
| 1700 | * |
||
| 1701 | * @return bool |
||
| 1702 | */ |
||
| 1703 | 49 | protected function whitespace() |
|
| 1704 | { |
||
| 1705 | 49 | if ($this->writeComments) { |
|
| 1706 | 1 | $gotWhite = false; |
|
| 1707 | 1 | while (preg_match(self::$whitePattern, $this->buffer, $m, null, $this->count)) { |
|
| 1708 | 1 | if (isset($m[1]) && empty($this->seenComments[$this->count])) { |
|
| 1709 | 1 | $this->append(["comment", $m[1]]); |
|
| 1710 | 1 | $this->seenComments[$this->count] = true; |
|
| 1711 | 1 | } |
|
| 1712 | 1 | $this->count += strlen($m[0]); |
|
| 1713 | 1 | $gotWhite = true; |
|
| 1714 | 1 | } |
|
| 1715 | |||
| 1716 | 1 | return $gotWhite; |
|
| 1717 | } |
||
| 1718 | |||
| 1719 | 49 | $this->match("", $m); |
|
| 1720 | 49 | return strlen($m[0]) > 0; |
|
| 1721 | } |
||
| 1722 | |||
| 1723 | /** |
||
| 1724 | * match something without consuming it |
||
| 1725 | * |
||
| 1726 | * @param string $regex |
||
| 1727 | * @param array $out |
||
| 1728 | * @param int $from |
||
| 1729 | * |
||
| 1730 | * @return int |
||
| 1731 | */ |
||
| 1732 | 24 | protected function peek($regex, &$out = null, $from = null) |
|
| 1733 | { |
||
| 1734 | 24 | if ($from === null) { |
|
| 1735 | 20 | $from = $this->count; |
|
| 1736 | 20 | } |
|
| 1737 | 24 | $r = '/' . $regex . '/Ais'; |
|
| 1738 | |||
| 1739 | 24 | return preg_match($r, $this->buffer, $out, null, $from); |
|
| 1740 | } |
||
| 1741 | |||
| 1742 | /** |
||
| 1743 | * seek to a spot in the buffer or return where we are on no argument |
||
| 1744 | * |
||
| 1745 | * @param int $where |
||
| 1746 | * |
||
| 1747 | * @return int |
||
| 1748 | */ |
||
| 1749 | 49 | protected function seek($where = null) |
|
| 1750 | { |
||
| 1751 | 49 | if ($where !== null) { |
|
| 1752 | 49 | $this->count = $where; |
|
| 1753 | 49 | } |
|
| 1754 | |||
| 1755 | 49 | return $this->count; |
|
| 1756 | } |
||
| 1757 | |||
| 1758 | /* misc functions */ |
||
| 1759 | |||
| 1760 | /** |
||
| 1761 | * @param string $msg |
||
| 1762 | * @param int $count |
||
| 1763 | * |
||
| 1764 | * @throws \LesserPhp\Exception\GeneralException |
||
| 1765 | */ |
||
| 1766 | 5 | public function throwError($msg = 'parse error', $count = null) |
|
| 1767 | { |
||
| 1768 | 5 | $count = $count === null ? $this->count : $count; |
|
| 1769 | |||
| 1770 | 5 | $line = $this->line + substr_count(substr($this->buffer, 0, $count), "\n"); |
|
| 1771 | |||
| 1772 | 5 | if (!empty($this->sourceName)) { |
|
| 1773 | $loc = "$this->sourceName on line $line"; |
||
| 1774 | } else { |
||
| 1775 | 5 | $loc = "line: $line"; |
|
| 1776 | } |
||
| 1777 | |||
| 1778 | // TODO this depends on $this->count |
||
| 1779 | 5 | if ($this->peek("(.*?)(\n|$)", $m, $count)) { |
|
| 1780 | 5 | throw new GeneralException("$msg: failed at `$m[1]` $loc"); |
|
| 1781 | } else { |
||
| 1782 | throw new GeneralException("$msg: $loc"); |
||
| 1783 | } |
||
| 1784 | } |
||
| 1785 | |||
| 1786 | /** |
||
| 1787 | * @param null $selectors |
||
| 1788 | * @param null $type |
||
| 1789 | * |
||
| 1790 | * @return \stdClass |
||
| 1791 | */ |
||
| 1792 | 49 | protected function pushBlock($selectors = null, $type = null) |
|
| 1818 | |||
| 1819 | /** |
||
| 1820 | * push a block that doesn't multiply tags |
||
| 1821 | * |
||
| 1822 | * @param $type |
||
| 1823 | * |
||
| 1824 | * @return \stdClass |
||
| 1825 | */ |
||
| 1826 | 49 | protected function pushSpecialBlock($type) |
|
| 1830 | |||
| 1831 | /** |
||
| 1832 | * append a property to the current block |
||
| 1833 | * |
||
| 1834 | * @param $prop |
||
| 1835 | * @param $pos |
||
| 1836 | */ |
||
| 1837 | 49 | protected function append($prop, $pos = null) |
|
| 1838 | { |
||
| 1839 | 49 | if ($pos !== null) { |
|
| 1840 | 49 | $prop[-1] = $pos; |
|
| 1841 | 49 | } |
|
| 1842 | 49 | $this->env->props[] = $prop; |
|
| 1843 | 49 | } |
|
| 1844 | |||
| 1845 | /** |
||
| 1846 | * pop something off the stack |
||
| 1847 | * |
||
| 1848 | * @return mixed |
||
| 1849 | */ |
||
| 1850 | 46 | protected function pop() |
|
| 1857 | |||
| 1858 | /** |
||
| 1859 | * remove comments from $text |
||
| 1860 | * todo: make it work for all functions, not just url |
||
| 1861 | * |
||
| 1862 | * @param string $text |
||
| 1863 | * |
||
| 1864 | * @return string |
||
| 1865 | */ |
||
| 1866 | 49 | protected function removeComments($text) |
|
| 1867 | { |
||
| 1868 | $look = [ |
||
| 1869 | 49 | 'url(', |
|
| 1870 | 49 | '//', |
|
| 1871 | 49 | '/*', |
|
| 1872 | 49 | '"', |
|
| 1873 | 49 | "'", |
|
| 1874 | 49 | ]; |
|
| 1875 | |||
| 1876 | 49 | $out = ''; |
|
| 1877 | 49 | $min = null; |
|
| 1878 | 49 | while (true) { |
|
| 1879 | // find the next item |
||
| 1880 | 49 | foreach ($look as $token) { |
|
| 1881 | 49 | $pos = mb_strpos($text, $token); |
|
| 1882 | 49 | if ($pos !== false) { |
|
| 1883 | 27 | if ($min === null || $pos < $min[1]) { |
|
| 1884 | 27 | $min = [$token, $pos]; |
|
| 1885 | 27 | } |
|
| 1886 | 27 | } |
|
| 1887 | 49 | } |
|
| 1888 | |||
| 1889 | 49 | if ($min === null) { |
|
| 1890 | 49 | break; |
|
| 1891 | } |
||
| 1892 | |||
| 1893 | 27 | $count = $min[1]; |
|
| 1894 | 27 | $skip = 0; |
|
| 1895 | 27 | $newlines = 0; |
|
| 1896 | 27 | switch ($min[0]) { |
|
| 1897 | 27 | case 'url(': |
|
| 1898 | 6 | if (preg_match('/url\(.*?\)/', $text, $m, 0, $count)) { |
|
| 1899 | 6 | $count += mb_strlen($m[0]) - mb_strlen($min[0]); |
|
| 1900 | 6 | } |
|
| 1901 | 6 | break; |
|
| 1902 | 27 | case '"': |
|
| 1903 | 27 | case "'": |
|
| 1904 | 24 | if (preg_match('/' . $min[0] . '.*?(?<!\\\\)' . $min[0] . '/', $text, $m, 0, $count)) { |
|
| 1905 | 24 | $count += mb_strlen($m[0]) - 1; |
|
| 1906 | 24 | } |
|
| 1907 | 24 | break; |
|
| 1908 | 18 | case '//': |
|
| 1909 | 18 | $skip = mb_strpos($text, "\n", $count); |
|
| 1910 | 18 | if ($skip === false) { |
|
| 1911 | $skip = mb_strlen($text) - $count; |
||
| 1912 | } else { |
||
| 1913 | 18 | $skip -= $count; |
|
| 1914 | } |
||
| 1915 | 18 | break; |
|
| 1916 | 4 | case '/*': |
|
| 1917 | 4 | if (preg_match('/\/\*.*?\*\//s', $text, $m, 0, $count)) { |
|
| 1918 | 4 | $skip = mb_strlen($m[0]); |
|
| 1919 | 4 | $newlines = mb_substr_count($m[0], "\n"); |
|
| 1920 | 4 | } |
|
| 1921 | 4 | break; |
|
| 1922 | 27 | } |
|
| 1923 | |||
| 1924 | 27 | if ($skip === 0) { |
|
| 1925 | 24 | $count += mb_strlen($min[0]); |
|
| 1926 | 24 | } |
|
| 1927 | |||
| 1928 | 27 | $out .= mb_substr($text, 0, $count) . str_repeat("\n", $newlines); |
|
| 1929 | 27 | $text = mb_substr($text, $count + $skip); |
|
| 1930 | |||
| 1931 | 27 | $min = null; |
|
| 1932 | 27 | } |
|
| 1933 | |||
| 1934 | 49 | return $out . $text; |
|
| 1935 | } |
||
| 1936 | |||
| 1937 | /** |
||
| 1938 | * @param bool $writeComments |
||
| 1939 | */ |
||
| 1940 | 49 | public function setWriteComments($writeComments) |
|
| 1944 | |||
| 1945 | /** |
||
| 1946 | * @param $s |
||
| 1947 | * |
||
| 1948 | * @return bool |
||
| 1949 | */ |
||
| 1950 | 3 | protected function handleLiteralMedia($s) |
|
| 1964 | |||
| 1965 | /** |
||
| 1966 | * @param string $directiveName |
||
| 1967 | * |
||
| 1968 | * @return bool |
||
| 1969 | */ |
||
| 1970 | 4 | protected function handleDirectiveBlock($directiveName) |
|
| 1971 | { |
||
| 1972 | // seriously, this || true is required for this statement to work!? |
||
| 1973 | 4 | if (($this->openString('{', $directiveValue, null, [';']) || true) && $this->literal('{')) { |
|
| 1974 | 4 | $dir = $this->pushSpecialBlock('directive'); |
|
| 1975 | 4 | $dir->name = $directiveName; |
|
| 1976 | 4 | if ($directiveValue !== null) { |
|
| 1977 | 2 | $dir->value = $directiveValue; |
|
| 1978 | 2 | } |
|
| 1979 | |||
| 1980 | 4 | return true; |
|
| 1981 | } |
||
| 1982 | |||
| 1983 | 1 | return false; |
|
| 1984 | } |
||
| 1985 | |||
| 1986 | /** |
||
| 1987 | * @param string $directiveName |
||
| 1988 | * |
||
| 1989 | * @return bool |
||
| 1990 | */ |
||
| 1991 | 1 | protected function handleDirectiveLine($directiveName) |
|
| 2001 | |||
| 2002 | /** |
||
| 2003 | * @param string $directiveName |
||
| 2004 | * |
||
| 2005 | * @return bool |
||
| 2006 | */ |
||
| 2007 | 24 | protected function handleRulesetDefinition($directiveName) |
|
| 2008 | { |
||
| 2009 | //Ruleset Definition |
||
| 2010 | // seriously, this || true is required for this statement to work!? |
||
| 2011 | 24 | if (($this->openString('{', $directiveValue, null, [';']) || true) && $this->literal('{')) { |
|
| 2012 | 1 | $dir = $this->pushBlock($this->fixTags(['@' . $directiveName])); |
|
| 2013 | 1 | $dir->name = $directiveName; |
|
| 2014 | 1 | if ($directiveValue !== null) { |
|
| 2015 | $dir->value = $directiveValue; |
||
| 2016 | } |
||
| 2017 | |||
| 2018 | 1 | return true; |
|
| 2019 | } |
||
| 2020 | |||
| 2021 | 23 | return false; |
|
| 2022 | } |
||
| 2023 | } |
||
| 2024 |
Loading history...
In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code:
Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion: