| // Copyright 2017 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef THIRD_PARTY_BLINK_RENDERER_CORE_CSS_CSSOM_CSS_MATH_VARIADIC_H_ |
| #define THIRD_PARTY_BLINK_RENDERER_CORE_CSS_CSSOM_CSS_MATH_VARIADIC_H_ |
| |
| #include "base/macros.h" |
| #include "third_party/blink/renderer/core/css/cssom/css_math_value.h" |
| #include "third_party/blink/renderer/core/css/cssom/css_numeric_array.h" |
| |
| namespace blink { |
| |
| // Represents an arithmetic operation with one or more CSSNumericValues. |
| class CORE_EXPORT CSSMathVariadic : public CSSMathValue { |
| |
| public: |
| CSSNumericArray* values() { return values_.Get(); } |
| |
| const CSSNumericValueVector& NumericValues() const { |
| return values_->Values(); |
| } |
| |
| void Trace(Visitor* visitor) override { |
| visitor->Trace(values_); |
| CSSMathValue::Trace(visitor); |
| } |
| |
| bool Equals(const CSSNumericValue& other) const final { |
| if (GetType() != other.GetType()) |
| return false; |
| |
| // We can safely cast here as we know 'other' has the same type as us. |
| const auto& other_variadic = static_cast<const CSSMathVariadic&>(other); |
| return std::equal( |
| NumericValues().begin(), NumericValues().end(), |
| other_variadic.NumericValues().begin(), |
| other_variadic.NumericValues().end(), |
| [](const auto& a, const auto& b) { return a->Equals(*b); }); |
| } |
| |
| protected: |
| CSSMathVariadic(CSSNumericArray* values, const CSSNumericValueType& type) |
| : CSSMathValue(type), values_(values) {} |
| |
| template <class BinaryTypeOperation> |
| static CSSNumericValueType TypeCheck(const CSSNumericValueVector& values, |
| BinaryTypeOperation op, |
| bool& error) { |
| error = false; |
| |
| CSSNumericValueType final_type = values.front()->Type(); |
| for (wtf_size_t i = 1; i < values.size(); i++) { |
| final_type = op(final_type, values[i]->Type(), error); |
| if (error) |
| return final_type; |
| } |
| |
| return final_type; |
| } |
| |
| private: |
| Member<CSSNumericArray> values_; |
| DISALLOW_COPY_AND_ASSIGN(CSSMathVariadic); |
| }; |
| |
| } // namespace blink |
| |
| #endif // THIRD_PARTY_BLINK_RENDERER_CORE_CSS_CSSOM_CSS_MATH_VARIADIC_H_ |