1 files changed, 178 insertions, 0 deletions
diff --git a/Source/WebCore/bridge/jni/JNIBridge.cpp b/Source/WebCore/bridge/jni/JNIBridge.cpp
new file mode 100644
index 0000000..c512ee7
--- /dev/null
+++ b/Source/WebCore/bridge/jni/JNIBridge.cpp
@@ -0,0 +1,178 @@
+/*
+ * Copyright (C) 2003, 2004, 2005, 2007, 2009 Apple Inc. All rights reserved.
+ * Copyright 2010, The Android Open Source Project
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+#include "JNIBridge.h"
+
+#if ENABLE(JAVA_BRIDGE)
+
+#include <wtf/text/CString.h>
+#include <wtf/text/StringBuilder.h>
+
+using namespace JSC;
+using namespace JSC::Bindings;
+
+JavaParameter::JavaParameter(JNIEnv* env, jstring type)
+{
+    m_type = JavaString(env, type);
+    m_JNIType = JNITypeFromClassName(m_type.utf8());
+}
+
+JavaMethod::JavaMethod(JNIEnv* env, jobject aMethod)
+{
+    // Get return type name
+    jstring returnTypeName = 0;
+    if (jobject returnType = callJNIMethod<jobject>(aMethod, "getReturnType", "()Ljava/lang/Class;")) {
+            returnTypeName = static_cast<jstring>(callJNIMethod<jobject>(returnType, "getName", "()Ljava/lang/String;"));
+        if (!returnTypeName)
+            returnTypeName = env->NewStringUTF("<Unknown>");
+        env->DeleteLocalRef(returnType);
+    }
+    m_returnType = JavaString(env, returnTypeName);
+    m_JNIReturnType = JNITypeFromClassName(m_returnType.utf8());
+    env->DeleteLocalRef(returnTypeName);
+
+    // Get method name
+    jstring methodName = static_cast<jstring>(callJNIMethod<jobject>(aMethod, "getName", "()Ljava/lang/String;"));
+    if (!returnTypeName)
+        returnTypeName = env->NewStringUTF("<Unknown>");
+    m_name = JavaString(env, methodName);
+    env->DeleteLocalRef(methodName);
+
+    // Get parameters
+    if (jarray jparameters = static_cast<jarray>(callJNIMethod<jobject>(aMethod, "getParameterTypes", "()[Ljava/lang/Class;"))) {
+        m_numParameters = env->GetArrayLength(jparameters);
+        m_parameters = new JavaParameter[m_numParameters];
+
+        for (int i = 0; i < m_numParameters; i++) {
+            jobject aParameter = env->GetObjectArrayElement(static_cast<jobjectArray>(jparameters), i);
+            jstring parameterName = static_cast<jstring>(callJNIMethod<jobject>(aParameter, "getName", "()Ljava/lang/String;"));
+            if (!parameterName)
+                parameterName = env->NewStringUTF("<Unknown>");
+            m_parameters[i] = JavaParameter(env, parameterName);
+            env->DeleteLocalRef(aParameter);
+            env->DeleteLocalRef(parameterName);
+        }
+        env->DeleteLocalRef(jparameters);
+    } else {
+        m_numParameters = 0;
+        m_parameters = 0;
+    }
+
+    // Created lazily.
+    m_signature = 0;
+    m_methodID = 0;
+
+    jclass modifierClass = env->FindClass("java/lang/reflect/Modifier");
+    int modifiers = callJNIMethod<jint>(aMethod, "getModifiers", "()I");
+    m_isStatic = static_cast<bool>(callJNIStaticMethod<jboolean>(modifierClass, "isStatic", "(I)Z", modifiers));
+    env->DeleteLocalRef(modifierClass);
+}
+
+JavaMethod::~JavaMethod()
+{
+    if (m_signature)
+        fastFree(m_signature);
+    delete[] m_parameters;
+};
+
+// JNI method signatures use '/' between components of a class name, but
+// we get '.' between components from the reflection API.
+static void appendClassName(StringBuilder& builder, const char* className)
+{
+#if USE(JSC)
+    ASSERT(JSLock::lockCount() > 0);
+#endif
+
+    char* c = fastStrDup(className);
+
+    char* result = c;
+    while (*c) {
+        if (*c == '.')
+            *c = '/';
+        c++;
+    }
+
+    builder.append(result);
+
+    fastFree(result);
+}
+
+const char* JavaMethod::signature() const
+{
+    if (!m_signature) {
+#if USE(JSC)
+        JSLock lock(SilenceAssertionsOnly);
+#endif
+
+        StringBuilder signatureBuilder;
+        signatureBuilder.append('(');
+        for (int i = 0; i < m_numParameters; i++) {
+            JavaParameter* aParameter = parameterAt(i);
+            JNIType type = aParameter->getJNIType();
+            if (type == array_type)
+                appendClassName(signatureBuilder, aParameter->type());
+            else {
+                signatureBuilder.append(signatureFromPrimitiveType(type));
+                if (type == object_type) {
+                    appendClassName(signatureBuilder, aParameter->type());
+                    signatureBuilder.append(';');
+                }
+            }
+        }
+        signatureBuilder.append(')');
+
+        const char* returnType = m_returnType.utf8();
+        if (m_JNIReturnType == array_type)
+            appendClassName(signatureBuilder, returnType);
+        else {
+            signatureBuilder.append(signatureFromPrimitiveType(m_JNIReturnType));
+            if (m_JNIReturnType == object_type) {
+                appendClassName(signatureBuilder, returnType);
+                signatureBuilder.append(';');
+            }
+        }
+
+        String signatureString = signatureBuilder.toString();
+        m_signature = fastStrDup(signatureString.utf8().data());
+    }
+
+    return m_signature;
+}
+
+JNIType JavaMethod::JNIReturnType() const
+{
+    return m_JNIReturnType;
+}
+
+jmethodID JavaMethod::methodID(jobject obj) const
+{
+    if (!m_methodID)
+        m_methodID = getMethodID(obj, m_name.utf8(), signature());
+    return m_methodID;
+}
+
+#endif // ENABLE(JAVA_BRIDGE)