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32 #include "core/css/CSSCalculationValue.h"
34 #include "core/css/CSSPrimitiveValueMappings.h"
35 #include "core/css/resolver/StyleResolver.h"
36 #include "wtf/MathExtras.h"
37 #include "wtf/OwnPtr.h"
38 #include "wtf/text/StringBuilder.h"
40 static const int maxExpressionDepth = 100;
50 static CalculationCategory unitCategory(CSSPrimitiveValue::UnitType type)
53 case CSSPrimitiveValue::CSS_NUMBER:
55 case CSSPrimitiveValue::CSS_PERCENTAGE:
57 case CSSPrimitiveValue::CSS_EMS:
58 case CSSPrimitiveValue::CSS_EXS:
59 case CSSPrimitiveValue::CSS_PX:
60 case CSSPrimitiveValue::CSS_CM:
61 case CSSPrimitiveValue::CSS_MM:
62 case CSSPrimitiveValue::CSS_IN:
63 case CSSPrimitiveValue::CSS_PT:
64 case CSSPrimitiveValue::CSS_PC:
65 case CSSPrimitiveValue::CSS_REMS:
66 case CSSPrimitiveValue::CSS_CHS:
67 case CSSPrimitiveValue::CSS_VW:
68 case CSSPrimitiveValue::CSS_VH:
69 case CSSPrimitiveValue::CSS_VMIN:
70 case CSSPrimitiveValue::CSS_VMAX:
72 case CSSPrimitiveValue::CSS_DEG:
73 case CSSPrimitiveValue::CSS_GRAD:
74 case CSSPrimitiveValue::CSS_RAD:
75 case CSSPrimitiveValue::CSS_TURN:
77 case CSSPrimitiveValue::CSS_MS:
78 case CSSPrimitiveValue::CSS_S:
80 case CSSPrimitiveValue::CSS_HZ:
81 case CSSPrimitiveValue::CSS_KHZ:
88 static bool hasDoubleValue(CSSPrimitiveValue::UnitType type)
91 case CSSPrimitiveValue::CSS_NUMBER:
92 case CSSPrimitiveValue::CSS_PERCENTAGE:
93 case CSSPrimitiveValue::CSS_EMS:
94 case CSSPrimitiveValue::CSS_EXS:
95 case CSSPrimitiveValue::CSS_CHS:
96 case CSSPrimitiveValue::CSS_REMS:
97 case CSSPrimitiveValue::CSS_PX:
98 case CSSPrimitiveValue::CSS_CM:
99 case CSSPrimitiveValue::CSS_MM:
100 case CSSPrimitiveValue::CSS_IN:
101 case CSSPrimitiveValue::CSS_PT:
102 case CSSPrimitiveValue::CSS_PC:
103 case CSSPrimitiveValue::CSS_DEG:
104 case CSSPrimitiveValue::CSS_RAD:
105 case CSSPrimitiveValue::CSS_GRAD:
106 case CSSPrimitiveValue::CSS_TURN:
107 case CSSPrimitiveValue::CSS_MS:
108 case CSSPrimitiveValue::CSS_S:
109 case CSSPrimitiveValue::CSS_HZ:
110 case CSSPrimitiveValue::CSS_KHZ:
111 case CSSPrimitiveValue::CSS_DIMENSION:
112 case CSSPrimitiveValue::CSS_VW:
113 case CSSPrimitiveValue::CSS_VH:
114 case CSSPrimitiveValue::CSS_VMIN:
115 case CSSPrimitiveValue::CSS_VMAX:
116 case CSSPrimitiveValue::CSS_DPPX:
117 case CSSPrimitiveValue::CSS_DPI:
118 case CSSPrimitiveValue::CSS_DPCM:
119 case CSSPrimitiveValue::CSS_FR:
121 case CSSPrimitiveValue::CSS_UNKNOWN:
122 case CSSPrimitiveValue::CSS_STRING:
123 case CSSPrimitiveValue::CSS_URI:
124 case CSSPrimitiveValue::CSS_IDENT:
125 case CSSPrimitiveValue::CSS_ATTR:
126 case CSSPrimitiveValue::CSS_COUNTER:
127 case CSSPrimitiveValue::CSS_RECT:
128 case CSSPrimitiveValue::CSS_RGBCOLOR:
129 case CSSPrimitiveValue::CSS_PAIR:
130 case CSSPrimitiveValue::CSS_UNICODE_RANGE:
131 case CSSPrimitiveValue::CSS_PARSER_HEXCOLOR:
132 case CSSPrimitiveValue::CSS_COUNTER_NAME:
133 case CSSPrimitiveValue::CSS_SHAPE:
134 case CSSPrimitiveValue::CSS_QUAD:
135 case CSSPrimitiveValue::CSS_CALC:
136 case CSSPrimitiveValue::CSS_CALC_PERCENTAGE_WITH_NUMBER:
137 case CSSPrimitiveValue::CSS_CALC_PERCENTAGE_WITH_LENGTH:
138 case CSSPrimitiveValue::CSS_PROPERTY_ID:
139 case CSSPrimitiveValue::CSS_VALUE_ID:
142 ASSERT_NOT_REACHED();
146 static String buildCSSText(const String& expression)
148 StringBuilder result;
149 result.appendLiteral("calc");
150 bool expressionHasSingleTerm = expression[0] != '(';
151 if (expressionHasSingleTerm)
153 result.append(expression);
154 if (expressionHasSingleTerm)
156 return result.toString();
159 String CSSCalcValue::customCSSText() const
161 return buildCSSText(m_expression->customCSSText());
164 bool CSSCalcValue::equals(const CSSCalcValue& other) const
166 return compareCSSValuePtr(m_expression, other.m_expression);
169 double CSSCalcValue::clampToPermittedRange(double value) const
171 return m_nonNegative && value < 0 ? 0 : value;
174 double CSSCalcValue::doubleValue() const
176 return clampToPermittedRange(m_expression->doubleValue());
179 double CSSCalcValue::computeLengthPx(const CSSToLengthConversionData& conversionData) const
181 return clampToPermittedRange(m_expression->computeLengthPx(conversionData));
184 DEFINE_EMPTY_DESTRUCTOR_WILL_BE_REMOVED(CSSCalcExpressionNode)
186 class CSSCalcPrimitiveValue final : public CSSCalcExpressionNode {
187 WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED;
190 static PassRefPtrWillBeRawPtr<CSSCalcPrimitiveValue> create(PassRefPtrWillBeRawPtr<CSSPrimitiveValue> value, bool isInteger)
192 return adoptRefWillBeNoop(new CSSCalcPrimitiveValue(value, isInteger));
195 static PassRefPtrWillBeRawPtr<CSSCalcPrimitiveValue> create(double value, CSSPrimitiveValue::UnitType type, bool isInteger)
197 if (std::isnan(value) || std::isinf(value))
199 return adoptRefWillBeNoop(new CSSCalcPrimitiveValue(CSSPrimitiveValue::create(value, type).get(), isInteger));
202 virtual bool isZero() const override
204 return !m_value->getDoubleValue();
207 virtual String customCSSText() const override
209 return m_value->cssText();
212 virtual void accumulatePixelsAndPercent(const CSSToLengthConversionData& conversionData, PixelsAndPercent& value, float multiplier) const override
214 switch (m_category) {
216 value.pixels += m_value->computeLength<float>(conversionData) * multiplier;
219 ASSERT(m_value->isPercentage());
220 value.percent += m_value->getDoubleValue() * multiplier;
223 ASSERT_NOT_REACHED();
227 virtual double doubleValue() const override
229 if (hasDoubleValue(primitiveType()))
230 return m_value->getDoubleValue();
231 ASSERT_NOT_REACHED();
235 virtual double computeLengthPx(const CSSToLengthConversionData& conversionData) const override
237 switch (m_category) {
239 return m_value->computeLength<double>(conversionData);
242 return m_value->getDoubleValue();
245 case CalcPercentLength:
246 case CalcPercentNumber:
249 ASSERT_NOT_REACHED();
252 ASSERT_NOT_REACHED();
256 virtual void accumulateLengthArray(CSSLengthArray& lengthArray, double multiplier) const override
258 ASSERT(category() != CalcNumber);
259 m_value->accumulateLengthArray(lengthArray, multiplier);
262 virtual bool equals(const CSSCalcExpressionNode& other) const override
264 if (type() != other.type())
267 return compareCSSValuePtr(m_value, static_cast<const CSSCalcPrimitiveValue&>(other).m_value);
270 virtual Type type() const override { return CssCalcPrimitiveValue; }
271 virtual CSSPrimitiveValue::UnitType primitiveType() const override
273 return m_value->primitiveType();
277 virtual void trace(Visitor* visitor) override
279 visitor->trace(m_value);
280 CSSCalcExpressionNode::trace(visitor);
284 CSSCalcPrimitiveValue(PassRefPtrWillBeRawPtr<CSSPrimitiveValue> value, bool isInteger)
285 : CSSCalcExpressionNode(unitCategory(value->primitiveType()), isInteger)
290 RefPtrWillBeMember<CSSPrimitiveValue> m_value;
293 static const CalculationCategory addSubtractResult[CalcOther][CalcOther] = {
294 // CalcNumber CalcLength CalcPercent CalcPercentNumber CalcPercentLength CalcAngle CalcTime CalcFrequency
295 /* CalcNumber */ { CalcNumber, CalcOther, CalcPercentNumber, CalcPercentNumber, CalcOther, CalcOther, CalcOther, CalcOther },
296 /* CalcLength */ { CalcOther, CalcLength, CalcPercentLength, CalcOther, CalcPercentLength, CalcOther, CalcOther, CalcOther },
297 /* CalcPercent */ { CalcPercentNumber, CalcPercentLength, CalcPercent, CalcPercentNumber, CalcPercentLength, CalcOther, CalcOther, CalcOther },
298 /* CalcPercentNumber */ { CalcPercentNumber, CalcOther, CalcPercentNumber, CalcPercentNumber, CalcOther, CalcOther, CalcOther, CalcOther },
299 /* CalcPercentLength */ { CalcOther, CalcPercentLength, CalcPercentLength, CalcOther, CalcPercentLength, CalcOther, CalcOther, CalcOther },
300 /* CalcAngle */ { CalcOther, CalcOther, CalcOther, CalcOther, CalcOther, CalcAngle, CalcOther, CalcOther },
301 /* CalcTime */ { CalcOther, CalcOther, CalcOther, CalcOther, CalcOther, CalcOther, CalcTime, CalcOther },
302 /* CalcFrequency */ { CalcOther, CalcOther, CalcOther, CalcOther, CalcOther, CalcOther, CalcOther, CalcFrequency }
305 static CalculationCategory determineCategory(const CSSCalcExpressionNode& leftSide, const CSSCalcExpressionNode& rightSide, CalcOperator op)
307 CalculationCategory leftCategory = leftSide.category();
308 CalculationCategory rightCategory = rightSide.category();
310 if (leftCategory == CalcOther || rightCategory == CalcOther)
316 return addSubtractResult[leftCategory][rightCategory];
318 if (leftCategory != CalcNumber && rightCategory != CalcNumber)
320 return leftCategory == CalcNumber ? rightCategory : leftCategory;
322 if (rightCategory != CalcNumber || rightSide.isZero())
327 ASSERT_NOT_REACHED();
331 static bool isIntegerResult(const CSSCalcExpressionNode* leftSide, const CSSCalcExpressionNode* rightSide, CalcOperator op)
333 // Not testing for actual integer values.
334 // Performs W3C spec's type checking for calc integers.
335 // http://www.w3.org/TR/css3-values/#calc-type-checking
336 return op != CalcDivide && leftSide->isInteger() && rightSide->isInteger();
339 class CSSCalcBinaryOperation final : public CSSCalcExpressionNode {
341 static PassRefPtrWillBeRawPtr<CSSCalcExpressionNode> create(PassRefPtrWillBeRawPtr<CSSCalcExpressionNode> leftSide, PassRefPtrWillBeRawPtr<CSSCalcExpressionNode> rightSide, CalcOperator op)
343 ASSERT(leftSide->category() != CalcOther && rightSide->category() != CalcOther);
345 CalculationCategory newCategory = determineCategory(*leftSide, *rightSide, op);
346 if (newCategory == CalcOther)
349 return adoptRefWillBeNoop(new CSSCalcBinaryOperation(leftSide, rightSide, op, newCategory));
352 static PassRefPtrWillBeRawPtr<CSSCalcExpressionNode> createSimplified(PassRefPtrWillBeRawPtr<CSSCalcExpressionNode> leftSide, PassRefPtrWillBeRawPtr<CSSCalcExpressionNode> rightSide, CalcOperator op)
354 CalculationCategory leftCategory = leftSide->category();
355 CalculationCategory rightCategory = rightSide->category();
356 ASSERT(leftCategory != CalcOther && rightCategory != CalcOther);
358 bool isInteger = isIntegerResult(leftSide.get(), rightSide.get(), op);
361 if (leftCategory == CalcNumber && rightCategory == CalcNumber) {
362 return CSSCalcPrimitiveValue::create(evaluateOperator(leftSide->doubleValue(), rightSide->doubleValue(), op), CSSPrimitiveValue::CSS_NUMBER, isInteger);
365 // Simplify addition and subtraction between same types.
366 if (op == CalcAdd || op == CalcSubtract) {
367 if (leftCategory == rightSide->category()) {
368 CSSPrimitiveValue::UnitType leftType = leftSide->primitiveType();
369 if (hasDoubleValue(leftType)) {
370 CSSPrimitiveValue::UnitType rightType = rightSide->primitiveType();
371 if (leftType == rightType)
372 return CSSCalcPrimitiveValue::create(evaluateOperator(leftSide->doubleValue(), rightSide->doubleValue(), op), leftType, isInteger);
373 CSSPrimitiveValue::UnitCategory leftUnitCategory = CSSPrimitiveValue::unitCategory(leftType);
374 if (leftUnitCategory != CSSPrimitiveValue::UOther && leftUnitCategory == CSSPrimitiveValue::unitCategory(rightType)) {
375 CSSPrimitiveValue::UnitType canonicalType = CSSPrimitiveValue::canonicalUnitTypeForCategory(leftUnitCategory);
376 if (canonicalType != CSSPrimitiveValue::CSS_UNKNOWN) {
377 double leftValue = leftSide->doubleValue() * CSSPrimitiveValue::conversionToCanonicalUnitsScaleFactor(leftType);
378 double rightValue = rightSide->doubleValue() * CSSPrimitiveValue::conversionToCanonicalUnitsScaleFactor(rightType);
379 return CSSCalcPrimitiveValue::create(evaluateOperator(leftValue, rightValue, op), canonicalType, isInteger);
385 // Simplify multiplying or dividing by a number for simplifiable types.
386 ASSERT(op == CalcMultiply || op == CalcDivide);
387 CSSCalcExpressionNode* numberSide = getNumberSide(leftSide.get(), rightSide.get());
389 return create(leftSide, rightSide, op);
390 if (numberSide == leftSide && op == CalcDivide)
392 CSSCalcExpressionNode* otherSide = leftSide == numberSide ? rightSide.get() : leftSide.get();
394 double number = numberSide->doubleValue();
395 if (std::isnan(number) || std::isinf(number))
397 if (op == CalcDivide && !number)
400 CSSPrimitiveValue::UnitType otherType = otherSide->primitiveType();
401 if (hasDoubleValue(otherType))
402 return CSSCalcPrimitiveValue::create(evaluateOperator(otherSide->doubleValue(), number, op), otherType, isInteger);
405 return create(leftSide, rightSide, op);
408 virtual bool isZero() const override
410 return !doubleValue();
413 virtual void accumulatePixelsAndPercent(const CSSToLengthConversionData& conversionData, PixelsAndPercent& value, float multiplier) const override
415 switch (m_operator) {
417 m_leftSide->accumulatePixelsAndPercent(conversionData, value, multiplier);
418 m_rightSide->accumulatePixelsAndPercent(conversionData, value, multiplier);
421 m_leftSide->accumulatePixelsAndPercent(conversionData, value, multiplier);
422 m_rightSide->accumulatePixelsAndPercent(conversionData, value, -multiplier);
425 ASSERT((m_leftSide->category() == CalcNumber) != (m_rightSide->category() == CalcNumber));
426 if (m_leftSide->category() == CalcNumber)
427 m_rightSide->accumulatePixelsAndPercent(conversionData, value, multiplier * m_leftSide->doubleValue());
429 m_leftSide->accumulatePixelsAndPercent(conversionData, value, multiplier * m_rightSide->doubleValue());
432 ASSERT(m_rightSide->category() == CalcNumber);
433 m_leftSide->accumulatePixelsAndPercent(conversionData, value, multiplier / m_rightSide->doubleValue());
436 ASSERT_NOT_REACHED();
440 virtual double doubleValue() const override
442 return evaluate(m_leftSide->doubleValue(), m_rightSide->doubleValue());
445 virtual double computeLengthPx(const CSSToLengthConversionData& conversionData) const override
447 const double leftValue = m_leftSide->computeLengthPx(conversionData);
448 const double rightValue = m_rightSide->computeLengthPx(conversionData);
449 return evaluate(leftValue, rightValue);
452 virtual void accumulateLengthArray(CSSLengthArray& lengthArray, double multiplier) const override
454 switch (m_operator) {
456 m_leftSide->accumulateLengthArray(lengthArray, multiplier);
457 m_rightSide->accumulateLengthArray(lengthArray, multiplier);
460 m_leftSide->accumulateLengthArray(lengthArray, multiplier);
461 m_rightSide->accumulateLengthArray(lengthArray, -multiplier);
464 ASSERT((m_leftSide->category() == CalcNumber) != (m_rightSide->category() == CalcNumber));
465 if (m_leftSide->category() == CalcNumber)
466 m_rightSide->accumulateLengthArray(lengthArray, multiplier * m_leftSide->doubleValue());
468 m_leftSide->accumulateLengthArray(lengthArray, multiplier * m_rightSide->doubleValue());
471 ASSERT(m_rightSide->category() == CalcNumber);
472 m_leftSide->accumulateLengthArray(lengthArray, multiplier / m_rightSide->doubleValue());
475 ASSERT_NOT_REACHED();
479 static String buildCSSText(const String& leftExpression, const String& rightExpression, CalcOperator op)
481 StringBuilder result;
483 result.append(leftExpression);
485 result.append(static_cast<char>(op));
487 result.append(rightExpression);
490 return result.toString();
493 virtual String customCSSText() const override
495 return buildCSSText(m_leftSide->customCSSText(), m_rightSide->customCSSText(), m_operator);
498 virtual bool equals(const CSSCalcExpressionNode& exp) const override
500 if (type() != exp.type())
503 const CSSCalcBinaryOperation& other = static_cast<const CSSCalcBinaryOperation&>(exp);
504 return compareCSSValuePtr(m_leftSide, other.m_leftSide)
505 && compareCSSValuePtr(m_rightSide, other.m_rightSide)
506 && m_operator == other.m_operator;
509 virtual Type type() const override { return CssCalcBinaryOperation; }
511 virtual CSSPrimitiveValue::UnitType primitiveType() const override
513 switch (m_category) {
515 ASSERT(m_leftSide->category() == CalcNumber && m_rightSide->category() == CalcNumber);
516 return CSSPrimitiveValue::CSS_NUMBER;
519 if (m_leftSide->category() == CalcNumber)
520 return m_rightSide->primitiveType();
521 if (m_rightSide->category() == CalcNumber)
522 return m_leftSide->primitiveType();
523 CSSPrimitiveValue::UnitType leftType = m_leftSide->primitiveType();
524 if (leftType == m_rightSide->primitiveType())
526 return CSSPrimitiveValue::CSS_UNKNOWN;
529 return CSSPrimitiveValue::CSS_DEG;
531 return CSSPrimitiveValue::CSS_MS;
533 return CSSPrimitiveValue::CSS_HZ;
534 case CalcPercentLength:
535 case CalcPercentNumber:
537 return CSSPrimitiveValue::CSS_UNKNOWN;
539 ASSERT_NOT_REACHED();
540 return CSSPrimitiveValue::CSS_UNKNOWN;
543 virtual void trace(Visitor* visitor) override
545 visitor->trace(m_leftSide);
546 visitor->trace(m_rightSide);
547 CSSCalcExpressionNode::trace(visitor);
551 CSSCalcBinaryOperation(PassRefPtrWillBeRawPtr<CSSCalcExpressionNode> leftSide, PassRefPtrWillBeRawPtr<CSSCalcExpressionNode> rightSide, CalcOperator op, CalculationCategory category)
552 : CSSCalcExpressionNode(category, isIntegerResult(leftSide.get(), rightSide.get(), op))
553 , m_leftSide(leftSide)
554 , m_rightSide(rightSide)
559 static CSSCalcExpressionNode* getNumberSide(CSSCalcExpressionNode* leftSide, CSSCalcExpressionNode* rightSide)
561 if (leftSide->category() == CalcNumber)
563 if (rightSide->category() == CalcNumber)
568 double evaluate(double leftSide, double rightSide) const
570 return evaluateOperator(leftSide, rightSide, m_operator);
573 static double evaluateOperator(double leftValue, double rightValue, CalcOperator op)
577 return leftValue + rightValue;
579 return leftValue - rightValue;
581 return leftValue * rightValue;
584 return leftValue / rightValue;
585 return std::numeric_limits<double>::quiet_NaN();
590 const RefPtrWillBeMember<CSSCalcExpressionNode> m_leftSide;
591 const RefPtrWillBeMember<CSSCalcExpressionNode> m_rightSide;
592 const CalcOperator m_operator;
595 static ParseState checkDepthAndIndex(int* depth, unsigned index, CSSParserValueList* tokens)
598 if (*depth > maxExpressionDepth)
600 if (index >= tokens->size())
605 class CSSCalcExpressionNodeParser {
608 PassRefPtrWillBeRawPtr<CSSCalcExpressionNode> parseCalc(CSSParserValueList* tokens)
612 bool ok = parseValueExpression(tokens, 0, &index, &result);
613 ASSERT_WITH_SECURITY_IMPLICATION(index <= tokens->size());
614 if (!ok || index != tokens->size())
623 RefPtrWillBeMember<CSSCalcExpressionNode> value;
626 char operatorValue(CSSParserValueList* tokens, unsigned index)
628 if (index >= tokens->size())
630 CSSParserValue* value = tokens->valueAt(index);
631 if (value->unit != CSSParserValue::Operator)
634 return value->iValue;
637 bool parseValue(CSSParserValueList* tokens, unsigned* index, Value* result)
639 CSSParserValue* parserValue = tokens->valueAt(*index);
640 if (parserValue->unit >= CSSParserValue::Operator)
643 CSSPrimitiveValue::UnitType type = static_cast<CSSPrimitiveValue::UnitType>(parserValue->unit);
644 if (unitCategory(type) == CalcOther)
647 result->value = CSSCalcPrimitiveValue::create(
648 CSSPrimitiveValue::create(parserValue->fValue, type), parserValue->isInt);
654 bool parseValueTerm(CSSParserValueList* tokens, int depth, unsigned* index, Value* result)
656 if (checkDepthAndIndex(&depth, *index, tokens) != OK)
659 if (operatorValue(tokens, *index) == '(') {
660 unsigned currentIndex = *index + 1;
661 if (!parseValueExpression(tokens, depth, ¤tIndex, result))
664 if (operatorValue(tokens, currentIndex) != ')')
666 *index = currentIndex + 1;
670 return parseValue(tokens, index, result);
673 bool parseValueMultiplicativeExpression(CSSParserValueList* tokens, int depth, unsigned* index, Value* result)
675 if (checkDepthAndIndex(&depth, *index, tokens) != OK)
678 if (!parseValueTerm(tokens, depth, index, result))
681 while (*index < tokens->size() - 1) {
682 char operatorCharacter = operatorValue(tokens, *index);
683 if (operatorCharacter != CalcMultiply && operatorCharacter != CalcDivide)
688 if (!parseValueTerm(tokens, depth, index, &rhs))
691 result->value = CSSCalcBinaryOperation::createSimplified(result->value, rhs.value, static_cast<CalcOperator>(operatorCharacter));
696 ASSERT_WITH_SECURITY_IMPLICATION(*index <= tokens->size());
700 bool parseAdditiveValueExpression(CSSParserValueList* tokens, int depth, unsigned* index, Value* result)
702 if (checkDepthAndIndex(&depth, *index, tokens) != OK)
705 if (!parseValueMultiplicativeExpression(tokens, depth, index, result))
708 while (*index < tokens->size() - 1) {
709 char operatorCharacter = operatorValue(tokens, *index);
710 if (operatorCharacter != CalcAdd && operatorCharacter != CalcSubtract)
715 if (!parseValueMultiplicativeExpression(tokens, depth, index, &rhs))
718 result->value = CSSCalcBinaryOperation::createSimplified(result->value, rhs.value, static_cast<CalcOperator>(operatorCharacter));
723 ASSERT_WITH_SECURITY_IMPLICATION(*index <= tokens->size());
727 bool parseValueExpression(CSSParserValueList* tokens, int depth, unsigned* index, Value* result)
729 return parseAdditiveValueExpression(tokens, depth, index, result);
733 PassRefPtrWillBeRawPtr<CSSCalcExpressionNode> CSSCalcValue::createExpressionNode(PassRefPtrWillBeRawPtr<CSSPrimitiveValue> value, bool isInteger)
735 return CSSCalcPrimitiveValue::create(value, isInteger);
738 PassRefPtrWillBeRawPtr<CSSCalcExpressionNode> CSSCalcValue::createExpressionNode(PassRefPtrWillBeRawPtr<CSSCalcExpressionNode> leftSide, PassRefPtrWillBeRawPtr<CSSCalcExpressionNode> rightSide, CalcOperator op)
740 return CSSCalcBinaryOperation::create(leftSide, rightSide, op);
743 PassRefPtrWillBeRawPtr<CSSCalcExpressionNode> CSSCalcValue::createExpressionNode(double pixels, double percent)
745 return createExpressionNode(
746 createExpressionNode(CSSPrimitiveValue::create(pixels, CSSPrimitiveValue::CSS_PX), pixels == trunc(pixels)),
747 createExpressionNode(CSSPrimitiveValue::create(percent, CSSPrimitiveValue::CSS_PERCENTAGE), percent == trunc(percent)),
751 PassRefPtrWillBeRawPtr<CSSCalcValue> CSSCalcValue::create(CSSParserValueList* parserValueList, ValueRange range)
753 CSSCalcExpressionNodeParser parser;
754 RefPtrWillBeRawPtr<CSSCalcExpressionNode> expression = parser.parseCalc(parserValueList);
756 return expression ? adoptRefWillBeNoop(new CSSCalcValue(expression, range)) : nullptr;
759 PassRefPtrWillBeRawPtr<CSSCalcValue> CSSCalcValue::create(PassRefPtrWillBeRawPtr<CSSCalcExpressionNode> expression, ValueRange range)
761 return adoptRefWillBeNoop(new CSSCalcValue(expression, range));
764 void CSSCalcValue::traceAfterDispatch(Visitor* visitor)
766 visitor->trace(m_expression);
767 CSSValue::traceAfterDispatch(visitor);