[Summary view]

Differences Between: [Versions 311 and 401] [Versions 311 and 402] [Versions 311 and 403]

   1  <?php
   2  
   3  namespace Sabberworm\CSS\Value;
   4  
   5  use Sabberworm\CSS\Parsing\ParserState;
   6  use Sabberworm\CSS\Parsing\UnexpectedTokenException;
   7  
   8  class CalcFunction extends CSSFunction {
   9  	 const T_OPERAND  = 1;
  10  	 const T_OPERATOR = 2;
  11  
  12  	public static function parse(ParserState $oParserState) {
  13  	 	 $aOperators = array('+', '-', '*', '/');
  14  	 	 $sFunction = trim($oParserState->consumeUntil('(', false, true));
  15  	 	 $oCalcList = new CalcRuleValueList($oParserState->currentLine());
  16  	 	 $oList = new RuleValueList(',', $oParserState->currentLine());
  17  	 	 $iNestingLevel = 0;
  18  	 	 $iLastComponentType = NULL;
  19  	 	 while(!$oParserState->comes(')') || $iNestingLevel > 0) {
  20  	 	 	 $oParserState->consumeWhiteSpace();
  21  	 	 	 if ($oParserState->comes('(')) {
  22  	 	 	 	 $iNestingLevel++;
  23  	 	 	 	 $oCalcList->addListComponent($oParserState->consume(1));
  24  	 	 	 	 continue;
  25  	 	 	 } else if ($oParserState->comes(')')) {
  26  	 	 	 	 $iNestingLevel--;
  27  	 	 	 	 $oCalcList->addListComponent($oParserState->consume(1));
  28  	 	 	 	 continue;
  29  	 	 	 }
  30  	 	 	 if ($iLastComponentType != CalcFunction::T_OPERAND) {
  31  	 	 	 	 $oVal = Value::parsePrimitiveValue($oParserState);
  32  	 	 	 	 $oCalcList->addListComponent($oVal);
  33  	 	 	 	 $iLastComponentType = CalcFunction::T_OPERAND;
  34  	 	 	 } else {
  35  	 	 	 	 if (in_array($oParserState->peek(), $aOperators)) {
  36  	 	 	 	 	 if (($oParserState->comes('-') || $oParserState->comes('+'))) {
  37  	 	 	 	 	 	 if ($oParserState->peek(1, -1) != ' ' || !($oParserState->comes('- ') || $oParserState->comes('+ '))) {
  38  	 	 	 	 	 	 	 throw new UnexpectedTokenException(" {$oParserState->peek()} ", $oParserState->peek(1, -1) . $oParserState->peek(2), 'literal', $oParserState->currentLine());
  39  	 	 	 	 	 	 }
  40  	 	 	 	 	 }
  41  	 	 	 	 	 $oCalcList->addListComponent($oParserState->consume(1));
  42  	 	 	 	 	 $iLastComponentType = CalcFunction::T_OPERATOR;
  43  	 	 	 	 } else {
  44  	 	 	 	 	 throw new UnexpectedTokenException(
  45  	 	 	 	 	 	 sprintf(
  46  	 	 	 	 	 	 	 'Next token was expected to be an operand of type %s. Instead "%s" was found.',
  47  	 	 	 	 	 	 	 implode(', ', $aOperators),
  48  	 	 	 	 	 	 	 $oVal
  49  	 	 	 	 	 	 ),
  50  	 	 	 	 	 	 '',
  51  	 	 	 	 	 	 'custom',
  52  	 	 	 	 	 	 $oParserState->currentLine()
  53  	 	 	 	 	 );
  54  	 	 	 	 }
  55  	 	 	 }
  56  	 	 }
  57  	 	 $oList->addListComponent($oCalcList);
  58  	 	 $oParserState->consume(')');
  59  	 	 return new CalcFunction($sFunction, $oList, ',', $oParserState->currentLine());
  60  	 }
  61  
  62  }