vendor/oyejorge/less.php/lib/Less/Exception/Chunk.php

   1 <?php\r
   2 \r
   3 /**\r
   4  * Chunk Exception\r
   5  *\r
   6  * @package Less\r
   7  * @subpackage exception\r
   8  */\r
   9 class Less_Exception_Chunk extends Less_Exception_Parser{\r
  10 \r
  11 \r
  12         protected $parserCurrentIndex = 0;\r
  13 \r
  14         protected $emitFrom = 0;\r
  15 \r
  16         protected $input_len;\r
  17 \r
  18 \r
  19         /**\r
  20          * Constructor\r
  21          *\r
  22          * @param string $input\r
  23          * @param Exception $previous Previous exception\r
  24          * @param integer $index The current parser index\r
  25          * @param Less_FileInfo|string $currentFile The file\r
  26          * @param integer $code The exception code\r
  27          */\r
  28         public function __construct($input, Exception $previous = null, $index = null, $currentFile = null, $code = 0){\r
  29 \r
  30                 $this->message = 'ParseError: Unexpected input'; //default message\r
  31 \r
  32                 $this->index = $index;\r
  33 \r
  34                 $this->currentFile = $currentFile;\r
  35 \r
  36                 $this->input = $input;\r
  37                 $this->input_len = strlen($input);\r
  38 \r
  39                 $this->Chunks();\r
  40                 $this->genMessage();\r
  41         }\r
  42 \r
  43 \r
  44         /**\r
  45          * See less.js chunks()\r
  46          * We don't actually need the chunks\r
  47          *\r
  48          */\r
  49         protected function Chunks(){\r
  50                 $level = 0;\r
  51                 $parenLevel = 0;\r
  52                 $lastMultiCommentEndBrace = null;\r
  53                 $lastOpening = null;\r
  54                 $lastMultiComment = null;\r
  55                 $lastParen = null;\r
  56 \r
  57                 for( $this->parserCurrentIndex = 0; $this->parserCurrentIndex < $this->input_len; $this->parserCurrentIndex++ ){\r
  58                         $cc = $this->CharCode($this->parserCurrentIndex);\r
  59                         if ((($cc >= 97) && ($cc <= 122)) || ($cc < 34)) {\r
  60                                 // a-z or whitespace\r
  61                                 continue;\r
  62                         }\r
  63 \r
  64                         switch ($cc) {\r
  65 \r
  66                                 // (\r
  67                                 case 40:\r
  68                                         $parenLevel++;\r
  69                                         $lastParen = $this->parserCurrentIndex;\r
  70                                         continue;\r
  71 \r
  72                                 // )\r
  73                                 case 41:\r
  74                                         $parenLevel--;\r
  75                                         if( $parenLevel < 0 ){\r
  76                                                 return $this->fail("missing opening `(`");\r
  77                                         }\r
  78                                         continue;\r
  79 \r
  80                                 // ;\r
  81                                 case 59:\r
  82                                         //if (!$parenLevel) { $this->emitChunk();       }\r
  83                                         continue;\r
  84 \r
  85                                 // {\r
  86                                 case 123:\r
  87                                         $level++;\r
  88                                         $lastOpening = $this->parserCurrentIndex;\r
  89                                         continue;\r
  90 \r
  91                                 // }\r
  92                                 case 125:\r
  93                                         $level--;\r
  94                                         if( $level < 0 ){\r
  95                                                 return $this->fail("missing opening `{`");\r
  96 \r
  97                                         }\r
  98                                         //if (!$level && !$parenLevel) { $this->emitChunk(); }\r
  99                                         continue;\r
 100                                 // \\r
 101                                 case 92:\r
 102                                         if ($this->parserCurrentIndex < $this->input_len - 1) { $this->parserCurrentIndex++; continue; }\r
 103                                         return $this->fail("unescaped `\\`");\r
 104 \r
 105                                 // ", ' and `\r
 106                                 case 34:\r
 107                                 case 39:\r
 108                                 case 96:\r
 109                                         $matched = 0;\r
 110                                         $currentChunkStartIndex = $this->parserCurrentIndex;\r
 111                                         for ($this->parserCurrentIndex = $this->parserCurrentIndex + 1; $this->parserCurrentIndex < $this->input_len; $this->parserCurrentIndex++) {\r
 112                                                 $cc2 = $this->CharCode($this->parserCurrentIndex);\r
 113                                                 if ($cc2 > 96) { continue; }\r
 114                                                 if ($cc2 == $cc) { $matched = 1; break; }\r
 115                                                 if ($cc2 == 92) {        // \\r
 116                                                         if ($this->parserCurrentIndex == $this->input_len - 1) {\r
 117                                                                 return $this->fail("unescaped `\\`");\r
 118                                                         }\r
 119                                                         $this->parserCurrentIndex++;\r
 120                                                 }\r
 121                                         }\r
 122                                         if ($matched) { continue; }\r
 123                                         return $this->fail("unmatched `" . chr($cc) . "`", $currentChunkStartIndex);\r
 124 \r
 125                                 // /, check for comment\r
 126                                 case 47:\r
 127                                         if ($parenLevel || ($this->parserCurrentIndex == $this->input_len - 1)) { continue; }\r
 128                                         $cc2 = $this->CharCode($this->parserCurrentIndex+1);\r
 129                                         if ($cc2 == 47) {\r
 130                                                 // //, find lnfeed\r
 131                                                 for ($this->parserCurrentIndex = $this->parserCurrentIndex + 2; $this->parserCurrentIndex < $this->input_len; $this->parserCurrentIndex++) {\r
 132                                                         $cc2 = $this->CharCode($this->parserCurrentIndex);\r
 133                                                         if (($cc2 <= 13) && (($cc2 == 10) || ($cc2 == 13))) { break; }\r
 134                                                 }\r
 135                                         } else if ($cc2 == 42) {\r
 136                                                 // /*, find */\r
 137                                                 $lastMultiComment = $currentChunkStartIndex = $this->parserCurrentIndex;\r
 138                                                 for ($this->parserCurrentIndex = $this->parserCurrentIndex + 2; $this->parserCurrentIndex < $this->input_len - 1; $this->parserCurrentIndex++) {\r
 139                                                         $cc2 = $this->CharCode($this->parserCurrentIndex);\r
 140                                                         if ($cc2 == 125) { $lastMultiCommentEndBrace = $this->parserCurrentIndex; }\r
 141                                                         if ($cc2 != 42) { continue; }\r
 142                                                         if ($this->CharCode($this->parserCurrentIndex+1) == 47) { break; }\r
 143                                                 }\r
 144                                                 if ($this->parserCurrentIndex == $this->input_len - 1) {\r
 145                                                         return $this->fail("missing closing `*/`", $currentChunkStartIndex);\r
 146                                                 }\r
 147                                         }\r
 148                                         continue;\r
 149 \r
 150                                 // *, check for unmatched */\r
 151                                 case 42:\r
 152                                         if (($this->parserCurrentIndex < $this->input_len - 1) && ($this->CharCode($this->parserCurrentIndex+1) == 47)) {\r
 153                                                 return $this->fail("unmatched `/*`");\r
 154                                         }\r
 155                                         continue;\r
 156                         }\r
 157                 }\r
 158 \r
 159                 if( $level !== 0 ){\r
 160                         if( ($lastMultiComment > $lastOpening) && ($lastMultiCommentEndBrace > $lastMultiComment) ){\r
 161                                 return $this->fail("missing closing `}` or `*/`", $lastOpening);\r
 162                         } else {\r
 163                                 return $this->fail("missing closing `}`", $lastOpening);\r
 164                         }\r
 165                 } else if ( $parenLevel !== 0 ){\r
 166                         return $this->fail("missing closing `)`", $lastParen);\r
 167                 }\r
 168 \r
 169 \r
 170                 //chunk didn't fail\r
 171 \r
 172 \r
 173                 //$this->emitChunk(true);\r
 174         }\r
 175 \r
 176         public function CharCode($pos){\r
 177                 return ord($this->input[$pos]);\r
 178         }\r
 179 \r
 180 \r
 181         public function fail( $msg, $index = null ){\r
 182 \r
 183                 if( !$index ){\r
 184                         $this->index = $this->parserCurrentIndex;\r
 185                 }else{\r
 186                         $this->index = $index;\r
 187                 }\r
 188                 $this->message = 'ParseError: '.$msg;\r
 189         }\r
 190 \r
 191 \r
 192         /*\r
 193         function emitChunk( $force = false ){\r
 194                 $len = $this->parserCurrentIndex - $this->emitFrom;\r
 195                 if ((($len < 512) && !$force) || !$len) {\r
 196                         return;\r
 197                 }\r
 198                 $chunks[] = substr($this->input, $this->emitFrom, $this->parserCurrentIndex + 1 - $this->emitFrom );\r
 199                 $this->emitFrom = $this->parserCurrentIndex + 1;\r
 200         }\r
 201         */\r
 202 \r
 203 }\r