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https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
Nick GerlemanandFacebook GitHub Bot
f77fced5e2
Summary: Pull Request resolved: https://github.com/facebook/react-native/pull/48987 Adds a data type parser for a variable number of values of a given single data type (at least 1). E.g. `CSSCommaSeparatedList<CSSShadow>` will represent the syntax of `<shadow>#` (ie the value produced by box-shadow). Changelog: [internal] Reviewed By: lenaic Differential Revision: D68738165 fbshipit-source-id: 6dd17b3da24b1c24808e49834a29a237c0115fab
46 lines
1.2 KiB
C++
46 lines
1.2 KiB
C++
/*
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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 <optional>
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#include <variant>
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#include <react/renderer/css/CSSDataType.h>
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#include <react/renderer/css/CSSValueParser.h>
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namespace facebook::react {
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/**
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* Represents a comma-separated repetition of a given single type.
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* https://www.w3.org/TR/css-values-4/#mult-comma
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*/
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template <CSSDataType AllowedTypeT>
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struct CSSCommaSeparatedList : public std::vector<AllowedTypeT> {};
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template <CSSDataType AllowedTypeT>
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struct CSSDataTypeParser<CSSCommaSeparatedList<AllowedTypeT>> {
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static inline auto consume(CSSSyntaxParser& parser)
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-> std::optional<CSSCommaSeparatedList<AllowedTypeT>> {
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CSSCommaSeparatedList<AllowedTypeT> result;
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for (auto nextValue = parseNextCSSValue<AllowedTypeT>(parser);
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!std::holds_alternative<std::monostate>(nextValue);
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nextValue =
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parseNextCSSValue<AllowedTypeT>(parser, CSSDelimiter::Comma)) {
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result.push_back(std::move(std::get<AllowedTypeT>(nextValue)));
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}
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if (result.empty()) {
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return {};
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}
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return result;
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}
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};
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} // namespace facebook::react
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