101 lines
4.8 KiB
C++
101 lines
4.8 KiB
C++
/*
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* Copyright (C) 2008 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "java_lang_StringFactory.h"
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#include "common_throws.h"
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#include "jni_internal.h"
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#include "mirror/object-inl.h"
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#include "mirror/string.h"
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#include "native_util.h"
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#include "nativehelper/jni_macros.h"
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#include "nativehelper/ScopedLocalRef.h"
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#include "nativehelper/ScopedPrimitiveArray.h"
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#include "scoped_fast_native_object_access-inl.h"
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#include "scoped_thread_state_change-inl.h"
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namespace art {
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static jstring StringFactory_newStringFromBytes(JNIEnv* env, jclass, jbyteArray java_data,
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jint high, jint offset, jint byte_count) {
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ScopedFastNativeObjectAccess soa(env);
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if (UNLIKELY(java_data == nullptr)) {
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ThrowNullPointerException("data == null");
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return nullptr;
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}
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StackHandleScope<1> hs(soa.Self());
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Handle<mirror::ByteArray> byte_array(hs.NewHandle(soa.Decode<mirror::ByteArray>(java_data)));
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int32_t data_size = byte_array->GetLength();
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if ((offset | byte_count) < 0 || byte_count > data_size - offset) {
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soa.Self()->ThrowNewExceptionF("Ljava/lang/StringIndexOutOfBoundsException;",
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"length=%d; regionStart=%d; regionLength=%d", data_size,
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offset, byte_count);
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return nullptr;
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}
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gc::AllocatorType allocator_type = Runtime::Current()->GetHeap()->GetCurrentAllocator();
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ObjPtr<mirror::String> result = mirror::String::AllocFromByteArray<true>(soa.Self(),
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byte_count,
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byte_array,
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offset,
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high,
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allocator_type);
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return soa.AddLocalReference<jstring>(result);
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}
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// The char array passed as `java_data` must not be a null reference.
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static jstring StringFactory_newStringFromChars(JNIEnv* env, jclass, jint offset,
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jint char_count, jcharArray java_data) {
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DCHECK(java_data != nullptr);
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ScopedFastNativeObjectAccess soa(env);
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StackHandleScope<1> hs(soa.Self());
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Handle<mirror::CharArray> char_array(hs.NewHandle(soa.Decode<mirror::CharArray>(java_data)));
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gc::AllocatorType allocator_type = Runtime::Current()->GetHeap()->GetCurrentAllocator();
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ObjPtr<mirror::String> result = mirror::String::AllocFromCharArray<true>(soa.Self(),
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char_count,
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char_array,
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offset,
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allocator_type);
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return soa.AddLocalReference<jstring>(result);
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}
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static jstring StringFactory_newStringFromString(JNIEnv* env, jclass, jstring to_copy) {
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ScopedFastNativeObjectAccess soa(env);
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if (UNLIKELY(to_copy == nullptr)) {
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ThrowNullPointerException("toCopy == null");
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return nullptr;
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}
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StackHandleScope<1> hs(soa.Self());
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Handle<mirror::String> string(hs.NewHandle(soa.Decode<mirror::String>(to_copy)));
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gc::AllocatorType allocator_type = Runtime::Current()->GetHeap()->GetCurrentAllocator();
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ObjPtr<mirror::String> result = mirror::String::AllocFromString<true>(soa.Self(),
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string->GetLength(),
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string,
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0,
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allocator_type);
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return soa.AddLocalReference<jstring>(result);
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}
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static JNINativeMethod gMethods[] = {
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FAST_NATIVE_METHOD(StringFactory, newStringFromBytes, "([BIII)Ljava/lang/String;"),
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FAST_NATIVE_METHOD(StringFactory, newStringFromChars, "(II[C)Ljava/lang/String;"),
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FAST_NATIVE_METHOD(StringFactory, newStringFromString, "(Ljava/lang/String;)Ljava/lang/String;"),
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};
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void register_java_lang_StringFactory(JNIEnv* env) {
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REGISTER_NATIVE_METHODS("java/lang/StringFactory");
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}
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} // namespace art
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