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
|
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "Conversions.h"
#include "JavaBuiltins.h"
#include "mozilla/ipc/GeckoChildProcessHost.h"
namespace mozilla {
namespace jni {
template <class T>
jfieldID GetValueFieldID(JNIEnv* aEnv, const char* aType) {
const jfieldID id = aEnv->GetFieldID(
typename T::Context(aEnv, nullptr).ClassRef(), "value", aType);
aEnv->ExceptionClear();
return id;
}
// Cached locations of the primitive types within their standard boxed objects
// to skip doing that lookup on every get.
static jfieldID gBooleanValueField;
static jfieldID gIntValueField;
static jfieldID gLongValueField;
static jfieldID gDoubleValueField;
void InitConversionStatics() {
MOZ_ASSERT(NS_IsMainThread());
JNIEnv* const env = jni::GetGeckoThreadEnv();
gBooleanValueField = GetValueFieldID<java::sdk::Boolean>(env, "Z");
gIntValueField = GetValueFieldID<java::sdk::Integer>(env, "I");
gLongValueField = GetValueFieldID<java::sdk::Long>(env, "J");
gDoubleValueField = GetValueFieldID<java::sdk::Double>(env, "D");
}
template <>
bool Java2Native(mozilla::jni::Object::Param aData, JNIEnv* aEnv) {
MOZ_ASSERT(aData.IsInstanceOf<jni::Boolean>());
bool result = false;
if (gBooleanValueField) {
if (!aEnv) {
aEnv = jni::GetEnvForThread();
}
result =
aEnv->GetBooleanField(aData.Get(), gBooleanValueField) != JNI_FALSE;
MOZ_CATCH_JNI_EXCEPTION(aEnv);
} else {
result = java::sdk::Boolean::Ref::From(aData)->BooleanValue();
}
return result;
}
template <>
int Java2Native(mozilla::jni::Object::Param aData, JNIEnv* aEnv) {
MOZ_ASSERT(aData.IsInstanceOf<jni::Integer>());
int result = 0;
if (gIntValueField) {
if (!aEnv) {
aEnv = jni::GetEnvForThread();
}
result = aEnv->GetIntField(aData.Get(), gIntValueField);
MOZ_CATCH_JNI_EXCEPTION(aEnv);
} else {
result = java::sdk::Number::Ref::From(aData)->IntValue();
}
return result;
}
template <>
double Java2Native(mozilla::jni::Object::Param aData, JNIEnv* aEnv) {
MOZ_ASSERT(aData.IsInstanceOf<jni::Double>());
double result = 0;
if (gDoubleValueField) {
if (!aEnv) {
aEnv = jni::GetEnvForThread();
}
result = aEnv->GetDoubleField(aData.Get(), gDoubleValueField);
MOZ_CATCH_JNI_EXCEPTION(aEnv);
} else {
result = java::sdk::Number::Ref::From(aData)->DoubleValue();
}
return result;
}
template <>
jlong Java2Native(mozilla::jni::Object::Param aData, JNIEnv* aEnv) {
MOZ_ASSERT(aData.IsInstanceOf<jni::Long>());
jlong result = 0;
if (gLongValueField) {
if (!aEnv) {
aEnv = jni::GetEnvForThread();
}
result = aEnv->GetLongField(aData.Get(), gLongValueField);
MOZ_CATCH_JNI_EXCEPTION(aEnv);
} else {
result = java::sdk::Number::Ref::From(aData)->LongValue();
}
return result;
}
template <>
ipc::LaunchError Java2Native(mozilla::jni::Object::Param aData, JNIEnv* aEnv) {
// Bug 1819311: there is not much we can really catch due to how Android
// services are started, so for now we just expose it this way.
return ipc::LaunchError("Java2Native");
}
template <>
nsString Java2Native(mozilla::jni::Object::Param aData, JNIEnv* aEnv) {
nsString result;
if (aData != NULL && aData.IsInstanceOf<jni::String>()) {
result = jni::String::Ref::From(aData)->ToString();
}
return result;
}
template <>
nsresult Java2Native(mozilla::jni::Object::Param aData, JNIEnv* aEnv) {
MOZ_ASSERT(aData.IsInstanceOf<jni::Throwable>());
return NS_ERROR_FAILURE;
}
} // namespace jni
} // namespace mozilla
|
