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05884f1d91
Also mark these functions as inline instead of static, to fix a compiler error about them being unused.
37 lines
1.3 KiB
C++
37 lines
1.3 KiB
C++
/*
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* Copyright (c) 2024-2025, Sam Atkins <sam@ladybird.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/StringView.h>
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#include <LibWeb/CSS/PropertyID.h>
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namespace Web::CSS {
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inline bool is_invalid_custom_property_name_string(StringView string)
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{
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// https://drafts.csswg.org/css-variables-2/#typedef-custom-property-name
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// The <custom-property-name> production corresponds to this: it’s defined as any <dashed-ident>
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// (a valid identifier that starts with two dashes), except -- itself, which is reserved for future use by CSS.
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return string == "--"sv;
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}
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// https://drafts.css-houdini.org/css-typed-om-1/#custom-property-name-string
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inline bool is_a_custom_property_name_string(StringView string)
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{
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// A string is a custom property name string if it starts with two dashes (U+002D HYPHEN-MINUS), like --foo.
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return string.starts_with("--"sv) && !is_invalid_custom_property_name_string(string);
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}
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// https://drafts.css-houdini.org/css-typed-om-1/#valid-css-property
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inline bool is_a_valid_css_property(StringView string)
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{
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// A string is a valid CSS property if it is a custom property name string, or is a CSS property name recognized by
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// the user agent.
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return is_a_custom_property_name_string(string) || property_id_from_string(string).has_value();
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}
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}
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