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Diffstat (limited to 'Source/WebCore/bridge/jni/JavaMethodJobject.cpp')
| -rw-r--r-- | Source/WebCore/bridge/jni/JavaMethodJobject.cpp | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/Source/WebCore/bridge/jni/JavaMethodJobject.cpp b/Source/WebCore/bridge/jni/JavaMethodJobject.cpp new file mode 100644 index 0000000..2f2802c --- /dev/null +++ b/Source/WebCore/bridge/jni/JavaMethodJobject.cpp @@ -0,0 +1,159 @@ +/* + * 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 "JavaMethodJobject.h" + +#if ENABLE(JAVA_BRIDGE) + +#include "JavaString.h" + +#if USE(JSC) +#include <runtime/JSObject.h> +#include <runtime/ScopeChain.h> +#endif +#include <wtf/text/StringBuilder.h> + +using namespace JSC; +using namespace JSC::Bindings; + +JavaMethodJobject::JavaMethodJobject(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_returnTypeClassName = JavaString(env, returnTypeName); + m_returnType = javaTypeFromClassName(m_returnTypeClassName.utf8()); + env->DeleteLocalRef(returnTypeName); + + // Get method name + jstring methodName = static_cast<jstring>(callJNIMethod<jobject>(aMethod, "getName", "()Ljava/lang/String;")); + if (!methodName) + methodName = 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;"))) { + unsigned int numParams = env->GetArrayLength(jparameters); + + for (unsigned int i = 0; i < numParams; 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.append(JavaString(env, parameterName).impl()); + env->DeleteLocalRef(aParameter); + env->DeleteLocalRef(parameterName); + } + env->DeleteLocalRef(jparameters); + } + + // Created lazily. + m_signature = 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); +} + +JavaMethodJobject::~JavaMethodJobject() +{ + if (m_signature) + fastFree(m_signature); +} + +// 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* JavaMethodJobject::signature() const +{ + if (!m_signature) { +#if USE(JSC) + JSLock lock(SilenceAssertionsOnly); +#endif + + StringBuilder signatureBuilder; + signatureBuilder.append('('); + for (unsigned int i = 0; i < m_parameters.size(); i++) { + CString javaClassName = parameterAt(i).utf8(); + JavaType type = javaTypeFromClassName(javaClassName.data()); + if (type == JavaTypeArray) + appendClassName(signatureBuilder, javaClassName.data()); + else { + signatureBuilder.append(signatureFromJavaType(type)); + if (type == JavaTypeObject) { + appendClassName(signatureBuilder, javaClassName.data()); + signatureBuilder.append(';'); + } + } + } + signatureBuilder.append(')'); + + const char* returnType = m_returnTypeClassName.utf8(); + if (m_returnType == JavaTypeArray) + appendClassName(signatureBuilder, returnType); + else { + signatureBuilder.append(signatureFromJavaType(m_returnType)); + if (m_returnType == JavaTypeObject) { + appendClassName(signatureBuilder, returnType); + signatureBuilder.append(';'); + } + } + + String signatureString = signatureBuilder.toString(); + m_signature = fastStrDup(signatureString.utf8().data()); + } + + return m_signature; +} + +#endif // ENABLE(JAVA_BRIDGE) |