ServoBindings.h - mozsearch

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim: set ts=8 sts=2 et sw=2 tw=80: */

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

/* FFI functions for Gecko to call into Servo */

#ifndef mozilla_ServoBindings_h

#define mozilla_ServoBindings_h

#include "mozilla/ServoStyleConsts.h"

// These functions are defined via macros in Rust, so cbindgen doesn't see them.

namespace mozilla {

// The clang we use on windows complains about returning StyleStrong<> and

// StyleOwned<>, since the template parameters are incomplete.

//

// But they only contain pointers so it is ok. Also, this warning hilariously

// doesn't exist in GCC.

//

// A solution for this is to explicitly instantiate the template, but duplicate

// instantiations are an error.

//

// https://github.com/eqrion/cbindgen/issues/402 tracks an improvement to

// cbindgen that would allow it to autogenerate the template instantiations on

// its own.

#pragma GCC diagnostic push

#ifdef __clang__

#  pragma GCC diagnostic ignored "-Wreturn-type-c-linkage"

#endif

extern "C" {

#define BASIC_RULE_FUNCS_WITHOUT_GETTER_WITH_PREFIX(type_, prefix_)      \

  void Servo_##type_##_Debug(const mozilla::Style##prefix_##type_*,      \

                             nsACString* result);                        \

  void Servo_##type_##_GetCssText(const mozilla::Style##prefix_##type_*, \

                                  nsACString* result);

#define BASIC_RULE_FUNCS_WITHOUT_GETTER_LOCKED(type_) \

  BASIC_RULE_FUNCS_WITHOUT_GETTER_WITH_PREFIX(type_, Locked)

#define BASIC_RULE_FUNCS_WITHOUT_GETTER_UNLOCKED(type_) \

  BASIC_RULE_FUNCS_WITHOUT_GETTER_WITH_PREFIX(type_, )

#define BASIC_RULE_FUNCS_WITH_PREFIX(type_, prefix_)                        \

  StyleStrong<mozilla::Style##prefix_##type_##Rule>                         \

      Servo_CssRules_Get##type_##RuleAt(const StyleLockedCssRules* rules,   \

                                        uint32_t index, uint32_t* line,     \

                                        uint32_t* column);                  \

  void Servo_StyleSet_##type_##RuleChanged(                                 \

      const StylePerDocumentStyleData*, const Style##prefix_##type_##Rule*, \

      const StyleDomStyleSheet*, StyleRuleChangeKind);                      \

  BASIC_RULE_FUNCS_WITHOUT_GETTER_WITH_PREFIX(type_##Rule, prefix_)

#define BASIC_RULE_FUNCS_LOCKED(type_) \

  BASIC_RULE_FUNCS_WITH_PREFIX(type_, Locked)

#define BASIC_RULE_FUNCS_UNLOCKED(type_) BASIC_RULE_FUNCS_WITH_PREFIX(type_, )

#define GROUP_RULE_FUNCS_WITH_PREFIX(type_, prefix_)                      \

  BASIC_RULE_FUNCS_WITH_PREFIX(type_, prefix_)                            \

  StyleStrong<mozilla::StyleLockedCssRules> Servo_##type_##Rule_GetRules( \

      const mozilla::Style##prefix_##type_##Rule* rule);

#define GROUP_RULE_FUNCS_LOCKED(type_) \

  GROUP_RULE_FUNCS_WITH_PREFIX(type_, Locked)

#define GROUP_RULE_FUNCS_UNLOCKED(type_) GROUP_RULE_FUNCS_WITH_PREFIX(type_, )

BASIC_RULE_FUNCS_LOCKED(Style)

BASIC_RULE_FUNCS_LOCKED(Import)

BASIC_RULE_FUNCS_WITHOUT_GETTER_LOCKED(Keyframe)

BASIC_RULE_FUNCS_LOCKED(Keyframes)

GROUP_RULE_FUNCS_UNLOCKED(Media)

GROUP_RULE_FUNCS_UNLOCKED(Document)

BASIC_RULE_FUNCS_UNLOCKED(Namespace)

BASIC_RULE_FUNCS_UNLOCKED(Margin)

GROUP_RULE_FUNCS_LOCKED(Page)

BASIC_RULE_FUNCS_UNLOCKED(Property)

GROUP_RULE_FUNCS_UNLOCKED(Supports)

GROUP_RULE_FUNCS_UNLOCKED(LayerBlock)

BASIC_RULE_FUNCS_UNLOCKED(LayerStatement)

BASIC_RULE_FUNCS_UNLOCKED(FontFeatureValues)

BASIC_RULE_FUNCS_UNLOCKED(FontPaletteValues)

BASIC_RULE_FUNCS_LOCKED(FontFace)

BASIC_RULE_FUNCS_LOCKED(CounterStyle)

GROUP_RULE_FUNCS_UNLOCKED(Container)

GROUP_RULE_FUNCS_UNLOCKED(Scope)

GROUP_RULE_FUNCS_UNLOCKED(StartingStyle)

#undef GROUP_RULE_FUNCS_LOCKED

#undef GROUP_RULE_FUNCS_UNLOCKED

#undef GROUP_RULE_FUNCS_WITH_PREFIX

#undef BASIC_RULE_FUNCS_LOCKED

#undef BASIC_RULE_FUNCS_UNLOCKED

#undef BASIC_RULE_FUNCS_WITH_PREFIX

#undef BASIC_RULE_FUNCS_WITHOUT_GETTER_LOCKED

#undef BASIC_RULE_FUNCS_WITHOUT_GETTER_UNLOCKED

#undef BASIC_RULE_FUNCS_WITHOUT_GETTER_WITH_PREFIX

#define BASIC_SERDE_FUNCS(type_)                                            \

  bool Servo_##type_##_Deserialize(mozilla::ipc::ByteBuf* input, type_* v); \

  bool Servo_##type_##_Serialize(const type_* v, mozilla::ipc::ByteBuf* output);

BASIC_SERDE_FUNCS(LengthPercentage)

BASIC_SERDE_FUNCS(StyleRotate)

BASIC_SERDE_FUNCS(StyleScale)

BASIC_SERDE_FUNCS(StyleTranslate)

BASIC_SERDE_FUNCS(StyleTransform)

BASIC_SERDE_FUNCS(StyleOffsetPath)

BASIC_SERDE_FUNCS(StyleOffsetRotate)

BASIC_SERDE_FUNCS(StylePositionOrAuto)

BASIC_SERDE_FUNCS(StyleOffsetPosition)

BASIC_SERDE_FUNCS(StyleComputedTimingFunction)

#undef BASIC_SERDE_FUNCS

void Servo_CounterStyleRule_GetDescriptorCssText(

    const StyleLockedCounterStyleRule* rule, nsCSSCounterDesc desc,

    nsACString* result);

bool Servo_CounterStyleRule_SetDescriptor(

    const StyleLockedCounterStyleRule* rule, nsCSSCounterDesc desc,

    const nsACString* value);

}  // extern "C"

#pragma GCC diagnostic pop

}  // namespace mozilla

#endif  // mozilla_ServoBindings_h