| // Copyright 2016 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_CSS_SYNTAX_DESCRIPTOR_H_ |
| #define THIRD_PARTY_BLINK_RENDERER_CORE_CSS_CSS_SYNTAX_DESCRIPTOR_H_ |
| |
| #include "third_party/blink/renderer/core/css/parser/css_parser_token_range.h" |
| |
| namespace blink { |
| |
| class CSSParserContext; |
| class CSSStyleValue; |
| class CSSValue; |
| |
| enum class CSSSyntaxType { |
| kTokenStream, |
| kIdent, |
| kLength, |
| kNumber, |
| kPercentage, |
| kLengthPercentage, |
| kColor, |
| kImage, |
| kUrl, |
| kInteger, |
| kAngle, |
| kTime, |
| kResolution, |
| kTransformFunction, |
| kTransformList, |
| kCustomIdent, |
| }; |
| |
| enum class CSSSyntaxRepeat { kNone, kSpaceSeparated, kCommaSeparated }; |
| |
| struct CSSSyntaxComponent { |
| CSSSyntaxComponent(CSSSyntaxType type, |
| const String& string, |
| CSSSyntaxRepeat repeat) |
| : type_(type), string_(string), repeat_(repeat) {} |
| |
| bool operator==(const CSSSyntaxComponent& a) const { |
| return type_ == a.type_ && string_ == a.string_ && repeat_ == a.repeat_; |
| } |
| |
| bool IsRepeatable() const { return repeat_ != CSSSyntaxRepeat::kNone; } |
| |
| bool CanTake(const CSSStyleValue&) const; |
| |
| CSSSyntaxType type_; |
| String string_; // Only used when type_ is CSSSyntaxType::kIdent |
| CSSSyntaxRepeat repeat_; |
| }; |
| |
| class CORE_EXPORT CSSSyntaxDescriptor { |
| public: |
| explicit CSSSyntaxDescriptor(const String& syntax); |
| |
| const CSSValue* Parse(CSSParserTokenRange, |
| const CSSParserContext*, |
| bool is_animation_tainted) const; |
| bool CanTake(const CSSStyleValue&) const; |
| bool IsValid() const { return !syntax_components_.IsEmpty(); } |
| bool IsTokenStream() const { |
| return syntax_components_.size() == 1 && |
| syntax_components_[0].type_ == CSSSyntaxType::kTokenStream; |
| } |
| bool HasUrlSyntax() const { |
| for (const CSSSyntaxComponent& component : syntax_components_) { |
| if (component.type_ == CSSSyntaxType::kUrl) |
| return true; |
| } |
| return false; |
| } |
| const Vector<CSSSyntaxComponent>& Components() const { |
| return syntax_components_; |
| } |
| bool operator==(const CSSSyntaxDescriptor& a) const { |
| return Components() == a.Components(); |
| } |
| bool operator!=(const CSSSyntaxDescriptor& a) const { |
| return Components() != a.Components(); |
| } |
| |
| private: |
| Vector<CSSSyntaxComponent> syntax_components_; |
| }; |
| |
| } // namespace blink |
| |
| #endif // THIRD_PARTY_BLINK_RENDERER_CORE_CSS_CSS_SYNTAX_DESCRIPTOR_H_ |