85 lines
2.0 KiB
C
85 lines
2.0 KiB
C
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/*
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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#pragma once
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#include <string_view>
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namespace facebook::react {
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/**
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* One of the tokens defined as part of
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* https://www.w3.org/TR/css-syntax-3/#tokenizer-definitions
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*/
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enum class CSSTokenType {
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CloseCurly,
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CloseParen,
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CloseSquare,
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Comma,
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Delim,
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Dimension,
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EndOfFile,
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Function,
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Ident,
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Number,
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OpenCurly,
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OpenParen,
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OpenSquare,
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Percentage,
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WhiteSpace,
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Hash,
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};
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/*
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* Represents one of the syntactic CSS tokens as provided by
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* https://www.w3.org/TR/css-syntax-3/#tokenization
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*
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* The token should not be kept long-term, and is only valid for the duration of
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* the originating CSSTokenizer.
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*/
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class CSSToken {
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public:
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explicit constexpr CSSToken(CSSTokenType type) : type_(type) {}
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constexpr CSSToken(CSSTokenType type, std::string_view value)
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: type_{type}, stringValue_{value} {}
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constexpr CSSToken(CSSTokenType type, float value)
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: type_{type}, numericValue_{value} {}
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constexpr CSSToken(CSSTokenType type, float value, std::string_view unit)
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: type_{type}, numericValue_{value}, unit_{unit} {}
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constexpr CSSToken(const CSSToken& other) = default;
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constexpr CSSToken(CSSToken&& other) = default;
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constexpr CSSToken& operator=(const CSSToken& other) = default;
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constexpr CSSToken& operator=(CSSToken&& other) = default;
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constexpr CSSTokenType type() const {
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return type_;
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}
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constexpr std::string_view stringValue() const {
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return stringValue_;
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}
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constexpr float numericValue() const {
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return numericValue_;
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}
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constexpr std::string_view unit() const {
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return unit_;
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}
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constexpr bool operator==(const CSSToken& other) const = default;
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private:
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CSSTokenType type_;
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std::string_view stringValue_;
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float numericValue_{0.0f};
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std::string_view unit_;
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};
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} // namespace facebook::react
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