1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
|
/*
* 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_String.h"
#include "nativehelper/jni_macros.h"
#include "common_throws.h"
#include "handle_scope-inl.h"
#include "jni/jni_internal.h"
#include "mirror/array.h"
#include "mirror/object-inl.h"
#include "mirror/string-alloc-inl.h"
#include "mirror/string-inl.h"
#include "native_util.h"
#include "nativehelper/scoped_local_ref.h"
#include "scoped_fast_native_object_access-inl.h"
#include "scoped_thread_state_change-inl.h"
#include "verify_object.h"
namespace art {
static jchar String_charAt(JNIEnv* env, jobject java_this, jint index) {
ScopedFastNativeObjectAccess soa(env);
return soa.Decode<mirror::String>(java_this)->CharAt(index);
}
static jint String_compareTo(JNIEnv* env, jobject java_this, jstring java_rhs) {
ScopedFastNativeObjectAccess soa(env);
if (UNLIKELY(java_rhs == nullptr)) {
ThrowNullPointerException("rhs == null");
return -1;
} else {
return soa.Decode<mirror::String>(java_this)->CompareTo(soa.Decode<mirror::String>(java_rhs));
}
}
static jstring String_concat(JNIEnv* env, jobject java_this, jstring java_string_arg) {
ScopedFastNativeObjectAccess soa(env);
if (UNLIKELY(java_string_arg == nullptr)) {
ThrowNullPointerException("string arg == null");
return nullptr;
}
StackHandleScope<2> hs(soa.Self());
Handle<mirror::String> string_this(hs.NewHandle(soa.Decode<mirror::String>(java_this)));
Handle<mirror::String> string_arg(hs.NewHandle(soa.Decode<mirror::String>(java_string_arg)));
int32_t length_this = string_this->GetLength();
int32_t length_arg = string_arg->GetLength();
if (length_arg > 0 && length_this > 0) {
ObjPtr<mirror::String> result = mirror::String::DoConcat(soa.Self(), string_this, string_arg);
return soa.AddLocalReference<jstring>(result);
}
jobject string_original = (length_this == 0) ? java_string_arg : java_this;
return reinterpret_cast<jstring>(string_original);
}
static jstring String_fastSubstring(JNIEnv* env, jobject java_this, jint start, jint length) {
ScopedFastNativeObjectAccess soa(env);
StackHandleScope<1> hs(soa.Self());
Handle<mirror::String> string_this(hs.NewHandle(soa.Decode<mirror::String>(java_this)));
gc::AllocatorType allocator_type = Runtime::Current()->GetHeap()->GetCurrentAllocator();
ObjPtr<mirror::String> result = mirror::String::AllocFromString(soa.Self(),
length,
string_this,
start,
allocator_type);
return soa.AddLocalReference<jstring>(result);
}
static void String_getCharsNoCheck(JNIEnv* env, jobject java_this, jint start, jint end,
jcharArray buffer, jint index) {
ScopedFastNativeObjectAccess soa(env);
StackHandleScope<1> hs(soa.Self());
Handle<mirror::CharArray> char_array(hs.NewHandle(soa.Decode<mirror::CharArray>(buffer)));
soa.Decode<mirror::String>(java_this)->GetChars(start, end, char_array, index);
}
static void String_fillBytesLatin1(JNIEnv* env, jobject java_this,
jbyteArray buffer, jint byteIndex) {
ScopedFastNativeObjectAccess soa(env);
StackHandleScope<1> hs(soa.Self());
Handle<mirror::ByteArray> byte_array(hs.NewHandle(soa.Decode<mirror::ByteArray>(buffer)));
soa.Decode<mirror::String>(java_this)->FillBytesLatin1(byte_array, byteIndex);
}
static void String_fillBytesUTF16(JNIEnv* env, jobject java_this,
jbyteArray buffer, jint byteIndex) {
ScopedFastNativeObjectAccess soa(env);
StackHandleScope<1> hs(soa.Self());
Handle<mirror::ByteArray> byte_array(hs.NewHandle(soa.Decode<mirror::ByteArray>(buffer)));
soa.Decode<mirror::String>(java_this)->FillBytesUTF16(byte_array, byteIndex);
}
static jstring String_intern(JNIEnv* env, jobject java_this) {
ScopedFastNativeObjectAccess soa(env);
ObjPtr<mirror::String> result = soa.Decode<mirror::String>(java_this)->Intern();
return soa.AddLocalReference<jstring>(result);
}
static jstring String_doReplace(JNIEnv* env, jobject java_this, jchar old_c, jchar new_c) {
ScopedFastNativeObjectAccess soa(env);
StackHandleScope<1> hs(soa.Self());
Handle<mirror::String> string = hs.NewHandle(soa.Decode<mirror::String>(java_this));
ObjPtr<mirror::String> result = mirror::String::DoReplace(soa.Self(), string, old_c, new_c);
return soa.AddLocalReference<jstring>(result);
}
static jcharArray String_toCharArray(JNIEnv* env, jobject java_this) {
ScopedFastNativeObjectAccess soa(env);
StackHandleScope<1u> hs(soa.Self());
Handle<mirror::String> s = hs.NewHandle(soa.Decode<mirror::String>(java_this));
return soa.AddLocalReference<jcharArray>(mirror::String::ToCharArray(s, soa.Self()));
}
static jstring String_doRepeat(JNIEnv* env, jobject java_this, jint count) {
ScopedFastNativeObjectAccess soa(env);
StackHandleScope<1> hs(soa.Self());
Handle<mirror::String> string = hs.NewHandle(soa.Decode<mirror::String>(java_this));
ObjPtr<mirror::String> result = mirror::String::DoRepeat(soa.Self(), string, count);
return soa.AddLocalReference<jstring>(result);
}
static JNINativeMethod gMethods[] = {
FAST_NATIVE_METHOD(String, charAt, "(I)C"),
FAST_NATIVE_METHOD(String, compareTo, "(Ljava/lang/String;)I"),
FAST_NATIVE_METHOD(String, concat, "(Ljava/lang/String;)Ljava/lang/String;"),
FAST_NATIVE_METHOD(String, doRepeat, "(I)Ljava/lang/String;"),
FAST_NATIVE_METHOD(String, doReplace, "(CC)Ljava/lang/String;"),
FAST_NATIVE_METHOD(String, fastSubstring, "(II)Ljava/lang/String;"),
FAST_NATIVE_METHOD(String, getCharsNoCheck, "(II[CI)V"),
FAST_NATIVE_METHOD(String, fillBytesLatin1, "([BI)V"),
FAST_NATIVE_METHOD(String, fillBytesUTF16, "([BI)V"),
FAST_NATIVE_METHOD(String, intern, "()Ljava/lang/String;"),
FAST_NATIVE_METHOD(String, toCharArray, "()[C"),
};
void register_java_lang_String(JNIEnv* env) {
REGISTER_NATIVE_METHODS("java/lang/String");
}
} // namespace art
|