Jeff Hao | 848f70a | 2014-01-15 13:49:50 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2008 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #include "java_lang_StringFactory.h" |
| 18 | |
| 19 | #include "common_throws.h" |
| 20 | #include "jni_internal.h" |
| 21 | #include "mirror/object-inl.h" |
| 22 | #include "mirror/string.h" |
| 23 | #include "scoped_fast_native_object_access.h" |
| 24 | #include "scoped_thread_state_change.h" |
| 25 | #include "ScopedLocalRef.h" |
| 26 | #include "ScopedPrimitiveArray.h" |
| 27 | |
| 28 | namespace art { |
| 29 | |
| 30 | static jstring StringFactory_newStringFromBytes(JNIEnv* env, jclass, jbyteArray java_data, |
| 31 | jint high, jint offset, jint byte_count) { |
| 32 | ScopedFastNativeObjectAccess soa(env); |
| 33 | if (UNLIKELY(java_data == nullptr)) { |
| 34 | ThrowNullPointerException("data == null"); |
| 35 | return nullptr; |
| 36 | } |
| 37 | StackHandleScope<1> hs(soa.Self()); |
| 38 | Handle<mirror::ByteArray> byte_array(hs.NewHandle(soa.Decode<mirror::ByteArray*>(java_data))); |
| 39 | int32_t data_size = byte_array->GetLength(); |
| 40 | if ((offset | byte_count) < 0 || byte_count > data_size - offset) { |
| 41 | soa.Self()->ThrowNewExceptionF("Ljava/lang/StringIndexOutOfBoundsException;", |
| 42 | "length=%d; regionStart=%d; regionLength=%d", data_size, |
| 43 | offset, byte_count); |
| 44 | return nullptr; |
| 45 | } |
| 46 | gc::AllocatorType allocator_type = Runtime::Current()->GetHeap()->GetCurrentAllocator(); |
| 47 | mirror::String* result = mirror::String::AllocFromByteArray<true>(soa.Self(), byte_count, |
| 48 | byte_array, offset, high, |
| 49 | allocator_type); |
| 50 | return soa.AddLocalReference<jstring>(result); |
| 51 | } |
| 52 | |
| 53 | static jstring StringFactory_newStringFromChars(JNIEnv* env, jclass, jint offset, |
| 54 | jint char_count, jcharArray java_data) { |
| 55 | ScopedFastNativeObjectAccess soa(env); |
| 56 | StackHandleScope<1> hs(soa.Self()); |
| 57 | Handle<mirror::CharArray> char_array(hs.NewHandle(soa.Decode<mirror::CharArray*>(java_data))); |
| 58 | gc::AllocatorType allocator_type = Runtime::Current()->GetHeap()->GetCurrentAllocator(); |
| 59 | mirror::String* result = mirror::String::AllocFromCharArray<true>(soa.Self(), char_count, |
| 60 | char_array, offset, |
| 61 | allocator_type); |
| 62 | return soa.AddLocalReference<jstring>(result); |
| 63 | } |
| 64 | |
| 65 | static jstring StringFactory_newStringFromString(JNIEnv* env, jclass, jstring to_copy) { |
| 66 | ScopedFastNativeObjectAccess soa(env); |
| 67 | if (UNLIKELY(to_copy == nullptr)) { |
| 68 | ThrowNullPointerException("toCopy == null"); |
| 69 | return nullptr; |
| 70 | } |
| 71 | StackHandleScope<1> hs(soa.Self()); |
| 72 | Handle<mirror::String> string(hs.NewHandle(soa.Decode<mirror::String*>(to_copy))); |
| 73 | gc::AllocatorType allocator_type = Runtime::Current()->GetHeap()->GetCurrentAllocator(); |
| 74 | mirror::String* result = mirror::String::AllocFromString<true>(soa.Self(), string->GetLength(), |
| 75 | string, 0, allocator_type); |
| 76 | return soa.AddLocalReference<jstring>(result); |
| 77 | } |
| 78 | |
| 79 | static JNINativeMethod gMethods[] = { |
| 80 | NATIVE_METHOD(StringFactory, newStringFromBytes, "!([BIII)Ljava/lang/String;"), |
| 81 | NATIVE_METHOD(StringFactory, newStringFromChars, "!(II[C)Ljava/lang/String;"), |
| 82 | NATIVE_METHOD(StringFactory, newStringFromString, "!(Ljava/lang/String;)Ljava/lang/String;"), |
| 83 | }; |
| 84 | |
| 85 | void register_java_lang_StringFactory(JNIEnv* env) { |
| 86 | REGISTER_NATIVE_METHODS("java/lang/StringFactory"); |
| 87 | } |
| 88 | |
| 89 | } // namespace art |