| /* |
| * Copyright (C) 2018 The Android Open Source Project |
| * |
| * 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 LIBTEXTCLASSIFIER_UTILS_JAVA_JNI_CACHE_H_ |
| #define LIBTEXTCLASSIFIER_UTILS_JAVA_JNI_CACHE_H_ |
| |
| #include <jni.h> |
| #include "utils/java/scoped_global_ref.h" |
| #include "utils/java/scoped_local_ref.h" |
| #include "utils/utf8/unicodetext.h" |
| |
| namespace libtextclassifier3 { |
| |
| // A helper class to cache class and method pointers for calls from JNI to Java. |
| // (for implementations such as Java ICU that need to make calls from C++ to |
| // Java) |
| struct JniCache { |
| static std::unique_ptr<JniCache> Create(JNIEnv* env); |
| |
| JNIEnv* GetEnv() const; |
| bool ExceptionCheckAndClear() const; |
| |
| JavaVM* jvm = nullptr; |
| |
| // java.lang.String |
| ScopedGlobalRef<jclass> string_class; |
| jmethodID string_init_bytes_charset = nullptr; |
| jmethodID string_code_point_count = nullptr; |
| jmethodID string_length = nullptr; |
| ScopedGlobalRef<jstring> string_utf8; |
| |
| // java.util.regex.Pattern |
| ScopedGlobalRef<jclass> pattern_class; |
| jmethodID pattern_compile = nullptr; |
| jmethodID pattern_matcher = nullptr; |
| |
| // java.util.regex.Matcher |
| ScopedGlobalRef<jclass> matcher_class; |
| jmethodID matcher_matches = nullptr; |
| jmethodID matcher_find = nullptr; |
| jmethodID matcher_reset = nullptr; |
| jmethodID matcher_start_idx = nullptr; |
| jmethodID matcher_end_idx = nullptr; |
| jmethodID matcher_group = nullptr; |
| jmethodID matcher_group_idx = nullptr; |
| |
| // java.util.Locale |
| ScopedGlobalRef<jclass> locale_class; |
| ScopedGlobalRef<jobject> locale_us; |
| jmethodID locale_init_string = nullptr; |
| jmethodID locale_for_language_tag = nullptr; |
| |
| // java.text.BreakIterator |
| ScopedGlobalRef<jclass> breakiterator_class; |
| jmethodID breakiterator_getwordinstance = nullptr; |
| jmethodID breakiterator_settext = nullptr; |
| jmethodID breakiterator_next = nullptr; |
| |
| // java.lang.Integer |
| ScopedGlobalRef<jclass> integer_class; |
| jmethodID integer_parse_int = nullptr; |
| |
| // java.util.Calendar |
| ScopedGlobalRef<jclass> calendar_class; |
| jmethodID calendar_get_instance = nullptr; |
| jmethodID calendar_get_first_day_of_week = nullptr; |
| jmethodID calendar_get_time_in_millis = nullptr; |
| jmethodID calendar_set_time_in_millis = nullptr; |
| jmethodID calendar_add = nullptr; |
| jmethodID calendar_get = nullptr; |
| jmethodID calendar_set = nullptr; |
| jint calendar_zone_offset; |
| jint calendar_dst_offset; |
| jint calendar_year; |
| jint calendar_month; |
| jint calendar_day_of_year; |
| jint calendar_day_of_month; |
| jint calendar_day_of_week; |
| jint calendar_hour_of_day; |
| jint calendar_minute; |
| jint calendar_second; |
| jint calendar_millisecond; |
| jint calendar_sunday; |
| jint calendar_monday; |
| jint calendar_tuesday; |
| jint calendar_wednesday; |
| jint calendar_thursday; |
| jint calendar_friday; |
| jint calendar_saturday; |
| |
| // java.util.TimeZone |
| ScopedGlobalRef<jclass> timezone_class; |
| jmethodID timezone_get_timezone = nullptr; |
| |
| // java.net.URLEncoder |
| ScopedGlobalRef<jclass> urlencoder_class; |
| jmethodID urlencoder_encode = nullptr; |
| |
| #ifdef __ANDROID__ |
| // android.content.Context |
| ScopedGlobalRef<jclass> context_class; |
| jmethodID context_get_package_name = nullptr; |
| jmethodID context_get_system_service = nullptr; |
| |
| // android.net.Uri |
| ScopedGlobalRef<jclass> uri_class; |
| jmethodID uri_parse = nullptr; |
| jmethodID uri_get_scheme = nullptr; |
| |
| // android.os.UserManager |
| ScopedGlobalRef<jclass> usermanager_class; |
| jmethodID usermanager_get_user_restrictions = nullptr; |
| |
| // android.os.Bundle |
| ScopedGlobalRef<jclass> bundle_class; |
| jmethodID bundle_get_boolean = nullptr; |
| #endif |
| |
| // Helper to convert lib3 UnicodeText to Java strings. |
| ScopedLocalRef<jstring> ConvertToJavaString(const UnicodeText& text) const; |
| |
| private: |
| explicit JniCache(JavaVM* jvm); |
| }; |
| |
| } // namespace libtextclassifier3 |
| |
| #endif // LIBTEXTCLASSIFIER_UTILS_JAVA_JNI_CACHE_H_ |