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Direktori : /home2/selectio/www/a1tex.in/vendor/sabberworm/php-css-parser/src/Value/ |
Current File : /home2/selectio/www/a1tex.in/vendor/sabberworm/php-css-parser/src/Value/CalcFunction.php |
<?php namespace Sabberworm\CSS\Value; use Sabberworm\CSS\Parsing\ParserState; use Sabberworm\CSS\Parsing\UnexpectedEOFException; use Sabberworm\CSS\Parsing\UnexpectedTokenException; class CalcFunction extends CSSFunction { /** * @var int */ const T_OPERAND = 1; /** * @var int */ const T_OPERATOR = 2; /** * @return CalcFunction * * @throws UnexpectedTokenException * @throws UnexpectedEOFException */ public static function parse(ParserState $oParserState) { $aOperators = ['+', '-', '*', '/']; $sFunction = trim($oParserState->consumeUntil('(', false, true)); $oCalcList = new CalcRuleValueList($oParserState->currentLine()); $oList = new RuleValueList(',', $oParserState->currentLine()); $iNestingLevel = 0; $iLastComponentType = null; while (!$oParserState->comes(')') || $iNestingLevel > 0) { $oParserState->consumeWhiteSpace(); if ($oParserState->comes('(')) { $iNestingLevel++; $oCalcList->addListComponent($oParserState->consume(1)); $oParserState->consumeWhiteSpace(); continue; } elseif ($oParserState->comes(')')) { $iNestingLevel--; $oCalcList->addListComponent($oParserState->consume(1)); $oParserState->consumeWhiteSpace(); continue; } if ($iLastComponentType != CalcFunction::T_OPERAND) { $oVal = Value::parsePrimitiveValue($oParserState); $oCalcList->addListComponent($oVal); $iLastComponentType = CalcFunction::T_OPERAND; } else { if (in_array($oParserState->peek(), $aOperators)) { if (($oParserState->comes('-') || $oParserState->comes('+'))) { if ( $oParserState->peek(1, -1) != ' ' || !($oParserState->comes('- ') || $oParserState->comes('+ ')) ) { throw new UnexpectedTokenException( " {$oParserState->peek()} ", $oParserState->peek(1, -1) . $oParserState->peek(2), 'literal', $oParserState->currentLine() ); } } $oCalcList->addListComponent($oParserState->consume(1)); $iLastComponentType = CalcFunction::T_OPERATOR; } else { throw new UnexpectedTokenException( sprintf( 'Next token was expected to be an operand of type %s. Instead "%s" was found.', implode(', ', $aOperators), $oVal ), '', 'custom', $oParserState->currentLine() ); } } $oParserState->consumeWhiteSpace(); } $oList->addListComponent($oCalcList); $oParserState->consume(')'); return new CalcFunction($sFunction, $oList, ',', $oParserState->currentLine()); } }