1 /*
2 * Copyright (C) 2003, 2004, 2005, 2007, 2009 Apple Inc. All rights reserved.
3 * Copyright 2010, The Android Open Source Project
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27 #include "config.h"
28 #include "JavaMethodJobject.h"
29
30 #if ENABLE(JAVA_BRIDGE)
31
32 #include "JavaString.h"
33
34 #if USE(JSC)
35 #include <runtime/JSObject.h>
36 #include <runtime/ScopeChain.h>
37 #endif
38 #include <wtf/text/StringBuilder.h>
39
40 using namespace JSC;
41 using namespace JSC::Bindings;
42
JavaMethodJobject(JNIEnv * env,jobject aMethod)43 JavaMethodJobject::JavaMethodJobject(JNIEnv* env, jobject aMethod)
44 {
45 // Get return type name
46 jstring returnTypeName = 0;
47 if (jobject returnType = callJNIMethod<jobject>(aMethod, "getReturnType", "()Ljava/lang/Class;")) {
48 returnTypeName = static_cast<jstring>(callJNIMethod<jobject>(returnType, "getName", "()Ljava/lang/String;"));
49 if (!returnTypeName)
50 returnTypeName = env->NewStringUTF("<Unknown>");
51 env->DeleteLocalRef(returnType);
52 }
53 m_returnTypeClassName = JavaString(env, returnTypeName);
54 m_returnType = javaTypeFromClassName(m_returnTypeClassName.utf8());
55 env->DeleteLocalRef(returnTypeName);
56
57 // Get method name
58 jstring methodName = static_cast<jstring>(callJNIMethod<jobject>(aMethod, "getName", "()Ljava/lang/String;"));
59 if (!methodName)
60 methodName = env->NewStringUTF("<Unknown>");
61 m_name = JavaString(env, methodName);
62 env->DeleteLocalRef(methodName);
63
64 // Get parameters
65 if (jarray jparameters = static_cast<jarray>(callJNIMethod<jobject>(aMethod, "getParameterTypes", "()[Ljava/lang/Class;"))) {
66 unsigned int numParams = env->GetArrayLength(jparameters);
67
68 for (unsigned int i = 0; i < numParams; i++) {
69 jobject aParameter = env->GetObjectArrayElement(static_cast<jobjectArray>(jparameters), i);
70 jstring parameterName = static_cast<jstring>(callJNIMethod<jobject>(aParameter, "getName", "()Ljava/lang/String;"));
71 if (!parameterName)
72 parameterName = env->NewStringUTF("<Unknown>");
73 m_parameters.append(JavaString(env, parameterName).impl());
74 env->DeleteLocalRef(aParameter);
75 env->DeleteLocalRef(parameterName);
76 }
77 env->DeleteLocalRef(jparameters);
78 }
79
80 // Created lazily.
81 m_signature = 0;
82
83 jclass modifierClass = env->FindClass("java/lang/reflect/Modifier");
84 int modifiers = callJNIMethod<jint>(aMethod, "getModifiers", "()I");
85 m_isStatic = static_cast<bool>(callJNIStaticMethod<jboolean>(modifierClass, "isStatic", "(I)Z", modifiers));
86 env->DeleteLocalRef(modifierClass);
87 }
88
~JavaMethodJobject()89 JavaMethodJobject::~JavaMethodJobject()
90 {
91 if (m_signature)
92 fastFree(m_signature);
93 }
94
95 // JNI method signatures use '/' between components of a class name, but
96 // we get '.' between components from the reflection API.
appendClassName(StringBuilder & builder,const char * className)97 static void appendClassName(StringBuilder& builder, const char* className)
98 {
99 #if USE(JSC)
100 ASSERT(JSLock::lockCount() > 0);
101 #endif
102
103 char* c = fastStrDup(className);
104
105 char* result = c;
106 while (*c) {
107 if (*c == '.')
108 *c = '/';
109 c++;
110 }
111
112 builder.append(result);
113
114 fastFree(result);
115 }
116
signature() const117 const char* JavaMethodJobject::signature() const
118 {
119 if (!m_signature) {
120 #if USE(JSC)
121 JSLock lock(SilenceAssertionsOnly);
122 #endif
123
124 StringBuilder signatureBuilder;
125 signatureBuilder.append('(');
126 for (unsigned int i = 0; i < m_parameters.size(); i++) {
127 CString javaClassName = parameterAt(i).utf8();
128 JavaType type = javaTypeFromClassName(javaClassName.data());
129 if (type == JavaTypeArray)
130 appendClassName(signatureBuilder, javaClassName.data());
131 else {
132 signatureBuilder.append(signatureFromJavaType(type));
133 if (type == JavaTypeObject
134 // ANDROID
135 || type == JavaTypeString
136 // ANDROID
137 ) {
138 appendClassName(signatureBuilder, javaClassName.data());
139 signatureBuilder.append(';');
140 }
141 }
142 }
143 signatureBuilder.append(')');
144
145 const char* returnType = m_returnTypeClassName.utf8();
146 if (m_returnType == JavaTypeArray)
147 appendClassName(signatureBuilder, returnType);
148 else {
149 signatureBuilder.append(signatureFromJavaType(m_returnType));
150 if (m_returnType == JavaTypeObject
151 // ANDROID
152 || m_returnType == JavaTypeString
153 // ANDROID
154 ) {
155 appendClassName(signatureBuilder, returnType);
156 signatureBuilder.append(';');
157 }
158 }
159
160 String signatureString = signatureBuilder.toString();
161 m_signature = fastStrDup(signatureString.utf8().data());
162 }
163
164 return m_signature;
165 }
166
167 #endif // ENABLE(JAVA_BRIDGE)
168