1 files changed, 89 insertions, 0 deletions
diff --git a/library/vendor/dompdf/vendor/sabberworm/php-css-parser/src/Value/CalcFunction.php b/library/vendor/dompdf/vendor/sabberworm/php-css-parser/src/Value/CalcFunction.php
new file mode 100644
index 0000000..5c92e0c
--- /dev/null
+++ b/library/vendor/dompdf/vendor/sabberworm/php-css-parser/src/Value/CalcFunction.php
@@ -0,0 +1,89 @@
+<?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());
+    }
+}