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/*
* Copyright (C) 2008 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.
*/
#include "java_lang_StringFactory.h"
#include "common_throws.h"
#include "jni_internal.h"
#include "mirror/object-inl.h"
#include "mirror/string.h"
#include "scoped_fast_native_object_access.h"
#include "scoped_thread_state_change.h"
#include "ScopedLocalRef.h"
#include "ScopedPrimitiveArray.h"
namespace art {
static jstring StringFactory_newStringFromBytes(JNIEnv* env, jclass, jbyteArray java_data,
jint high, jint offset, jint byte_count) {
ScopedFastNativeObjectAccess soa(env);
if (UNLIKELY(java_data == nullptr)) {
ThrowNullPointerException("data == null");
return nullptr;
}
StackHandleScope<1> hs(soa.Self());
Handle<mirror::ByteArray> byte_array(hs.NewHandle(soa.Decode<mirror::ByteArray*>(java_data)));
int32_t data_size = byte_array->GetLength();
if ((offset | byte_count) < 0 || byte_count > data_size - offset) {
soa.Self()->ThrowNewExceptionF("Ljava/lang/StringIndexOutOfBoundsException;",
"length=%d; regionStart=%d; regionLength=%d", data_size,
offset, byte_count);
return nullptr;
}
gc::AllocatorType allocator_type = Runtime::Current()->GetHeap()->GetCurrentAllocator();
mirror::String* result = mirror::String::AllocFromByteArray<true>(soa.Self(), byte_count,
byte_array, offset, high,
allocator_type);
return soa.AddLocalReference<jstring>(result);
}
// The char array passed as `java_data` must not be a null reference.
static jstring StringFactory_newStringFromChars(JNIEnv* env, jclass, jint offset,
jint char_count, jcharArray java_data) {
DCHECK(java_data != nullptr);
ScopedFastNativeObjectAccess soa(env);
StackHandleScope<1> hs(soa.Self());
Handle<mirror::CharArray> char_array(hs.NewHandle(soa.Decode<mirror::CharArray*>(java_data)));
gc::AllocatorType allocator_type = Runtime::Current()->GetHeap()->GetCurrentAllocator();
mirror::String* result = mirror::String::AllocFromCharArray<true>(soa.Self(), char_count,
char_array, offset,
allocator_type);
return soa.AddLocalReference<jstring>(result);
}
static jstring StringFactory_newStringFromString(JNIEnv* env, jclass, jstring to_copy) {
ScopedFastNativeObjectAccess soa(env);
if (UNLIKELY(to_copy == nullptr)) {
ThrowNullPointerException("toCopy == null");
return nullptr;
}
StackHandleScope<1> hs(soa.Self());
Handle<mirror::String> string(hs.NewHandle(soa.Decode<mirror::String*>(to_copy)));
gc::AllocatorType allocator_type = Runtime::Current()->GetHeap()->GetCurrentAllocator();
mirror::String* result = mirror::String::AllocFromString<true>(soa.Self(), string->GetLength(),
string, 0, allocator_type);
return soa.AddLocalReference<jstring>(result);
}
static JNINativeMethod gMethods[] = {
NATIVE_METHOD(StringFactory, newStringFromBytes, "!([BIII)Ljava/lang/String;"),
NATIVE_METHOD(StringFactory, newStringFromChars, "!(II[C)Ljava/lang/String;"),
NATIVE_METHOD(StringFactory, newStringFromString, "!(Ljava/lang/String;)Ljava/lang/String;"),
};
void register_java_lang_StringFactory(JNIEnv* env) {
REGISTER_NATIVE_METHODS("java/lang/StringFactory");
}
} // namespace art