зеркало из https://github.com/mozilla/gecko-dev.git
65 строки
1.7 KiB
C++
65 строки
1.7 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_ServoTypes_h
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#define mozilla_ServoTypes_h
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/*
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* Type definitions used to interact with Servo. This gets included by nsINode,
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* so don't add significant include dependencies to this file.
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*/
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struct ServoNodeData;
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namespace mozilla {
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/*
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* Replaced types. These get mapped to associated Servo types in bindgen.
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*/
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template<typename T>
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struct ServoUnsafeCell {
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T value;
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// Ensure that primitive types (i.e. pointers) get zero-initialized.
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ServoUnsafeCell() : value() {};
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};
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template<typename T>
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struct ServoCell {
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ServoUnsafeCell<T> value;
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T Get() const { return value.value; }
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void Set(T arg) { value.value = arg; }
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ServoCell() : value() {};
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};
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// Indicates whether a style resolution should be considered to consume the style
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// for the construction of a layout frame, or whether the caller is just
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// peeking.
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enum class ConsumeStyleBehavior {
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Consume,
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DontConsume,
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};
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// Indicates whether the Servo style system should expect the style on an element
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// to have already been resolved (i.e. via a parallel traversal), or whether it
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// may be lazily computed.
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enum class LazyComputeBehavior {
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Allow,
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Assert,
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};
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// Indicates whether the Servo style system should perform normal processing or
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// whether it should only process unstyled children of the root and their
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// descendants.
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enum class TraversalRootBehavior {
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Normal,
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UnstyledChildrenOnly,
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};
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} // namespace mozilla
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#endif // mozilla_ServoTypes_h
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