/*

 * Copyright (c) 2023 Shenzhen Kaihong Digital Industry Development Co., Ltd.

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 *     http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */



#ifndef ECMASCRIPT_JS_SEGMENTS_H

#define ECMASCRIPT_JS_SEGMENTS_H



#include "ecmascript/ecma_string.h"

#include "ecmascript/ecma_vm.h"

#include "ecmascript/ecma_macros.h"

#include "ecmascript/global_env.h"

#include "ecmascript/js_hclass.h"

#include "ecmascript/js_intl.h"

#include "ecmascript/js_locale.h"

#include "ecmascript/js_object.h"

#include "ecmascript/js_segmenter.h"

#include "ecmascript/js_tagged_value_wrapper.h"

#include "ecmascript/object_factory.h"



#include "unicode/locdspnm.h"



namespace panda::ecmascript {

class JSSegments : public JSObject {

public:

    CAST_CHECK(JSSegments, IsJSSegments);



    static constexpr size_t ICU_FIELD_OFFSET = JSObject::SIZE;

    ACCESSORS(IcuField, ICU_FIELD_OFFSET, SEGMENTS_STRING_OFFSET)

    ACCESSORS(SegmentsString, SEGMENTS_STRING_OFFSET, UNICODE_STRING_OFFSET)

    ACCESSORS(UnicodeString, UNICODE_STRING_OFFSET, BIT_FIELD_OFFSET)

    ACCESSORS_BIT_FIELD(BitField, BIT_FIELD_OFFSET, LAST_OFFSET)

    DEFINE_ALIGN_SIZE(LAST_OFFSET);



    // define BitField

    static constexpr size_t GRANULARITY_BITS = 3;

    FIRST_BIT_FIELD(BitField, Granularity, GranularityOption, GRANULARITY_BITS)



    DECL_VISIT_OBJECT_FOR_JS_OBJECT(JSObject, ICU_FIELD_OFFSET, BIT_FIELD_OFFSET)

    DECL_DUMP()



    // 18.5.1 CreateSegmentsObject ( segmenter, string )

    static JSHandle<JSSegments> CreateSegmentsObject(JSThread *thread,

                                                     const JSHandle<JSSegmenter> &segmenter,

                                                     const JSHandle<EcmaString> &string);

    // Get icu break iterator from icu field

    icu::BreakIterator *GetIcuBreakIterator(JSThread *thread) const

    {

        ASSERT(GetIcuField(thread).IsJSNativePointer());

        auto result = JSNativePointer::Cast(GetIcuField(thread).GetTaggedObject())->GetExternalPointer();

        return reinterpret_cast<icu::BreakIterator *>(result);

    }



    static void FreeIcuBreakIterator([[maybe_unused]] void *env, void *pointer, [[maybe_unused]] void* hint)

    {

        if (pointer == nullptr) {

            return;

        }

        auto icuBreakIterator = reinterpret_cast<icu::BreakIterator *>(pointer);

        delete icuBreakIterator;

    }



    static void SetIcuBreakIterator(JSThread *thread, const JSHandle<JSSegments> &segments,

                                    icu::BreakIterator* icuBreakIterator, const NativePointerCallback &callback);



    static void FreeUString([[maybe_unused]] void *env, void *pointer, [[maybe_unused]] void* hint)

    {

        if (pointer == nullptr) {

            return;

        }

        auto unicodeString = reinterpret_cast<icu::UnicodeString *>(pointer);

        delete unicodeString;

    }



    static void SetUString(JSThread *thread, const JSHandle<JSSegments> &segments,

                           icu::UnicodeString* icuUnicodeString, const NativePointerCallback &callback);



    icu::UnicodeString *GetUString(JSThread *thread) const

    {

        ASSERT(GetUnicodeString(thread).IsJSNativePointer());

        auto result = JSNativePointer::Cast(GetUnicodeString(thread).GetTaggedObject())->GetExternalPointer();

        return reinterpret_cast<icu::UnicodeString *>(result);

    }



    static JSTaggedValue Containing(JSThread *thread, const JSHandle<JSSegments> &segments, double index);



    // 18.7.1 CreateSegmentDataObject ( segmenter, string, startIndex, endIndex )

    static JSHandle<JSObject> CreateSegmentDataObject(JSThread *thread, GranularityOption granularity,

        icu::BreakIterator* breakIterator, const JSHandle<EcmaString> &inputString,

        const icu::UnicodeString& unicodeString, int32_t startIndex, int32_t endIndex);

};

}  // namespace panda::ecmascript

#endif  // ECMASCRIPT_JS_SEGMENTS_H