1 /* 2 * Copyright (c) 2023 Shenzhen Kaihong Digital Industry Development Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef ECMASCRIPT_JS_SEGMENTER_H 17 #define ECMASCRIPT_JS_SEGMENTER_H 18 19 #include "ecmascript/ecma_string.h" 20 #include "ecmascript/ecma_vm.h" 21 #include "ecmascript/ecma_macros.h" 22 #include "ecmascript/global_env.h" 23 #include "ecmascript/js_hclass.h" 24 #include "ecmascript/js_intl.h" 25 #include "ecmascript/js_locale.h" 26 #include "ecmascript/js_object.h" 27 #include "ecmascript/js_tagged_value.h" 28 #include "ecmascript/object_factory.h" 29 30 #include "unicode/locdspnm.h" 31 32 namespace panda::ecmascript { 33 enum class GranularityOption : uint8_t { 34 GRAPHEME = 0x01, 35 WORD, 36 SENTENCE, 37 EXCEPTION 38 }; 39 40 class JSSegmenter : public JSObject { 41 public: 42 CAST_CHECK(JSSegmenter, IsJSSegmenter); 43 44 static constexpr size_t LOCALE_OFFSET = JSObject::SIZE; 45 ACCESSORS(Locale, LOCALE_OFFSET, ICU_FIELD_OFFSET) 46 ACCESSORS(IcuField, ICU_FIELD_OFFSET, BIT_FIELD_OFFSET) 47 ACCESSORS_BIT_FIELD(BitField, BIT_FIELD_OFFSET, LAST_OFFSET) 48 DEFINE_ALIGN_SIZE(LAST_OFFSET); 49 50 // define BitField 51 static constexpr size_t GRANULARITY_BITS = 3; 52 FIRST_BIT_FIELD(BitField, Granularity, GranularityOption, GRANULARITY_BITS) 53 54 DECL_VISIT_OBJECT_FOR_JS_OBJECT(JSObject, LOCALE_OFFSET, BIT_FIELD_OFFSET) 55 DECL_DUMP() 56 57 static JSHandle<JSSegmenter> InitializeSegmenter(JSThread *thread, 58 const JSHandle<JSSegmenter> &segmenter, 59 const JSHandle<JSTaggedValue> &locales, 60 const JSHandle<JSTaggedValue> &options); 61 // Get icu break iterator from icu field GetIcuBreakIterator()62 icu::BreakIterator *GetIcuBreakIterator() const 63 { 64 ASSERT(GetIcuField().IsJSNativePointer()); 65 auto result = JSNativePointer::Cast(GetIcuField().GetTaggedObject())->GetExternalPointer(); 66 return reinterpret_cast<icu::BreakIterator *>(result); 67 } 68 FreeIcuBreakIterator(void * env,void * pointer,void * hint)69 static void FreeIcuBreakIterator([[maybe_unused]] void *env, void *pointer, [[maybe_unused]] void* hint) 70 { 71 if (pointer == nullptr) { 72 return; 73 } 74 auto icuBreakIterator = reinterpret_cast<icu::BreakIterator *>(pointer); 75 delete icuBreakIterator; 76 } 77 78 static void SetIcuBreakIterator(JSThread *thread, const JSHandle<JSSegmenter> &segmenter, 79 icu::BreakIterator* icuBreakIterator, const NativePointerCallback &callback); 80 81 static JSHandle<TaggedArray> GetAvailableLocales(JSThread *thread); 82 83 static void ResolvedOptions(JSThread *thread, const JSHandle<JSSegmenter> &segmenter, 84 const JSHandle<JSObject> &options); 85 86 static JSHandle<JSTaggedValue> GranularityOptionToEcmaString(JSThread *thread, GranularityOption granularity); 87 88 private: 89 static void InitializeIcuBreakIterator(JSThread *thread, const JSHandle<JSSegmenter> &segmenter, 90 const icu::Locale &icuLocale, GranularityOption granularity); 91 }; 92 } // namespace panda::ecmascript 93 #endif // ECMASCRIPT_JS_SEGMENTER_H