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227891b140
Otherwise it'd error, which is not great. We could add a custom attribute in there if needed or something, or fix cbindgen to generate these for us as described in the issue linked from the comments. Do this in ServoStyleConstsInlines as that's where we have the guarantee that the templates have been defined, and that the file is included every time ServoStyleConsts is included. Differential Revision: https://phabricator.services.mozilla.com/D61625 --HG-- extra : moz-landing-system : lando
100 lines
3.4 KiB
C++
100 lines
3.4 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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/* FFI functions for Gecko to call into Servo */
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#ifndef mozilla_ServoBindings_h
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#define mozilla_ServoBindings_h
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#include "mozilla/ServoStyleConsts.h"
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// These functions are defined via macros in Rust, so cbindgen doesn't see them.
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namespace mozilla {
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// The clang we use on windows complains about returning StyleStrong<> and
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// StyleOwned<>, since the template parameters are incomplete.
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//
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// But they only contain pointers so it is ok. Also, this warning hilariously
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// doesn't exist in GCC.
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//
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// A solution for this is to explicitly instantiate the template, but duplicate
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// instantiations are an error.
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//
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// https://github.com/eqrion/cbindgen/issues/402 tracks an improvement to
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// cbindgen that would allow it to autogenerate the template instantiations on
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// its own.
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#pragma GCC diagnostic push
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#ifdef __clang__
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# pragma GCC diagnostic ignored "-Wreturn-type-c-linkage"
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#endif
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extern "C" {
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#define BASIC_RULE_FUNCS_WITHOUT_GETTER(type_) \
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void Servo_##type_##_Debug(const RawServo##type_*, nsACString* result); \
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void Servo_##type_##_GetCssText(const RawServo##type_*, nsAString* result);
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#define BASIC_RULE_FUNCS(type_) \
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StyleStrong<RawServo##type_##Rule> Servo_CssRules_Get##type_##RuleAt( \
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const ServoCssRules* rules, uint32_t index, uint32_t* line, \
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uint32_t* column); \
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BASIC_RULE_FUNCS_WITHOUT_GETTER(type_##Rule)
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#define GROUP_RULE_FUNCS(type_) \
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BASIC_RULE_FUNCS(type_) \
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StyleStrong<ServoCssRules> Servo_##type_##Rule_GetRules( \
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const RawServo##type_##Rule* rule);
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BASIC_RULE_FUNCS(Style)
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BASIC_RULE_FUNCS(Import)
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BASIC_RULE_FUNCS_WITHOUT_GETTER(Keyframe)
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BASIC_RULE_FUNCS(Keyframes)
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GROUP_RULE_FUNCS(Media)
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GROUP_RULE_FUNCS(MozDocument)
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BASIC_RULE_FUNCS(Namespace)
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BASIC_RULE_FUNCS(Page)
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GROUP_RULE_FUNCS(Supports)
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BASIC_RULE_FUNCS(FontFeatureValues)
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BASIC_RULE_FUNCS(FontFace)
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BASIC_RULE_FUNCS(CounterStyle)
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#undef GROUP_RULE_FUNCS
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#undef BASIC_RULE_FUNCS
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#undef BASIC_RULE_FUNCS_WITHOUT_GETTER
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#define BASIC_SERDE_FUNCS(type_) \
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bool Servo_##type_##_Deserialize(mozilla::ipc::ByteBuf* input, type_* v); \
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bool Servo_##type_##_Serialize(const type_* v, mozilla::ipc::ByteBuf* output);
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using RayFunction = StyleRayFunction<StyleAngle>;
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BASIC_SERDE_FUNCS(LengthPercentage)
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BASIC_SERDE_FUNCS(StyleRotate)
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BASIC_SERDE_FUNCS(StyleScale)
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BASIC_SERDE_FUNCS(StyleTranslate)
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BASIC_SERDE_FUNCS(StyleTransform)
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BASIC_SERDE_FUNCS(StyleOffsetPath)
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BASIC_SERDE_FUNCS(StyleOffsetRotate)
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BASIC_SERDE_FUNCS(StylePositionOrAuto)
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#undef BASIC_SERDE_FUNCS
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void Servo_CounterStyleRule_GetDescriptorCssText(
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const RawServoCounterStyleRule* rule, nsCSSCounterDesc desc,
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nsAString* result);
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bool Servo_CounterStyleRule_SetDescriptor(const RawServoCounterStyleRule* rule,
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nsCSSCounterDesc desc,
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const nsACString* value);
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} // extern "C"
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#pragma GCC diagnostic pop
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} // namespace mozilla
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#endif // mozilla_ServoBindings_h
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