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 "common_throws.h"
18 #include "jni_internal.h"
19 #include "mirror/string.h"
20 #include "scoped_thread_state_change.h"
21 #include "ScopedLocalRef.h"
22
23 namespace art {
24
String_compareTo(JNIEnv * env,jobject javaThis,jobject javaRhs)25 static jint String_compareTo(JNIEnv* env, jobject javaThis, jobject javaRhs) {
26 ScopedObjectAccess soa(env);
27 if (UNLIKELY(javaRhs == NULL)) {
28 ThrowNullPointerException(NULL, "rhs == null");
29 return -1;
30 } else {
31 return soa.Decode<mirror::String*>(javaThis)->CompareTo(soa.Decode<mirror::String*>(javaRhs));
32 }
33 }
34
String_fastIndexOf(JNIEnv * env,jobject java_this,jint ch,jint start)35 static jint String_fastIndexOf(JNIEnv* env, jobject java_this, jint ch, jint start) {
36 ScopedObjectAccess soa(env);
37 // This method does not handle supplementary characters. They're dealt with in managed code.
38 DCHECK_LE(ch, 0xffff);
39
40 mirror::String* s = soa.Decode<mirror::String*>(java_this);
41 return s->FastIndexOf(ch, start);
42 }
43
String_intern(JNIEnv * env,jobject javaThis)44 static jstring String_intern(JNIEnv* env, jobject javaThis) {
45 ScopedObjectAccess soa(env);
46 mirror::String* s = soa.Decode<mirror::String*>(javaThis);
47 mirror::String* result = s->Intern();
48 return soa.AddLocalReference<jstring>(result);
49 }
50
51 static JNINativeMethod gMethods[] = {
52 NATIVE_METHOD(String, compareTo, "(Ljava/lang/String;)I"),
53 NATIVE_METHOD(String, fastIndexOf, "(II)I"),
54 NATIVE_METHOD(String, intern, "()Ljava/lang/String;"),
55 };
56
register_java_lang_String(JNIEnv * env)57 void register_java_lang_String(JNIEnv* env) {
58 REGISTER_NATIVE_METHODS("java/lang/String");
59 }
60
61 } // namespace art
62