| /* |
| * Copyright (C) 2010 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. |
| */ |
| |
| #pragma once |
| |
| #include <nativehelper/JNIHelp.h> |
| #include <nativehelper/jni_macros.h> |
| |
| #include "unicode/parseerr.h" |
| #include "unicode/regex.h" |
| |
| /** |
| * Encapsulates an instance of ICU4C's RegexMatcher class along with a copy of |
| * the input it's currently operating on in the native heap. |
| * |
| * Rationale: We choose to make a copy here because it turns out to be a lot |
| * cheaper when a moving GC and/or string compression is enabled. This is |
| * because env->GetStringChars() always copies in this scenario. This becomes |
| * especially bad when the String in question is long and/or contains a large |
| * number of matches. |
| * |
| * Drawbacks: The native allocation associated with this class is no longer |
| * fixed size, but NativeAllocationRegistry should be able to determine |
| * the native heap size by mallinfo(). |
| */ |
| class MatcherState { |
| public: |
| MatcherState(icu::RegexMatcher* matcher); |
| ~MatcherState(); |
| |
| bool updateInput(JNIEnv* env, jstring input); |
| |
| icu::RegexMatcher* matcher(); |
| |
| UErrorCode& status(); |
| |
| void updateOffsets(JNIEnv* env, jintArray javaOffsets); |
| |
| private: |
| std::unique_ptr<icu::RegexMatcher> mMatcher; |
| std::unique_ptr<UChar[]> mUChars; |
| UText* mUText; |
| UErrorCode mStatus; |
| |
| // Disallow copy and assignment. |
| MatcherState(const MatcherState&); |
| void operator=(const MatcherState&); |
| }; |