af5ccdd029
No behavior change right now, but this is needed to fix the initiator in bug 1899734. Differential Revision: https://phabricator.services.mozilla.com/D223642
56 lines
1.8 KiB
C++
56 lines
1.8 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_css_StylePreloadKind_h
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#define mozilla_css_StylePreloadKind_h
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#include <stdint.h>
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namespace mozilla::css {
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enum class StylePreloadKind : uint8_t {
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// Not a preload.
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None,
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// An speculative load from the parser for a <link rel="stylesheet"> or
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// @import stylesheet.
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FromParser,
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// A preload (speculative or not) for a <link rel="preload" as="style">
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// element.
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FromLinkRelPreloadElement,
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// A preload for a "Link" rel=preload response header.
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FromLinkRelPreloadHeader,
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// A preload from an early-hints header.
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FromEarlyHintsHeader,
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};
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inline bool IsLinkRelPreloadOrEarlyHint(StylePreloadKind aKind) {
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return aKind == StylePreloadKind::FromLinkRelPreloadElement ||
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aKind == StylePreloadKind::FromLinkRelPreloadHeader ||
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aKind == StylePreloadKind::FromEarlyHintsHeader;
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}
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inline bool ShouldAssumeStandardsMode(StylePreloadKind aKind) {
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switch (aKind) {
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case StylePreloadKind::FromLinkRelPreloadHeader:
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case StylePreloadKind::FromEarlyHintsHeader:
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// For header preloads we guess non-quirks, because otherwise it is
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// useless for modern pages.
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//
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// Link element preload is generally good because the speculative html
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// parser deals with quirks mode properly.
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return true;
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case StylePreloadKind::None:
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case StylePreloadKind::FromParser:
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case StylePreloadKind::FromLinkRelPreloadElement:
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break;
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}
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return false;
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}
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} // namespace mozilla::css
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#endif // mozilla_css_StylePreloadKind_h
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