/*
* Copyright (C) 2011 Red Hat, Inc. and/or its affiliates.
*
* 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.
*/
package org.jboss.errai.codegen.meta.impl.java;
import java.lang.annotation.Annotation;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.lang.reflect.Type;
import java.util.ArrayList;
import java.util.List;
import org.jboss.errai.codegen.meta.MetaClass;
import org.jboss.errai.codegen.meta.MetaClassFactory;
import org.jboss.errai.codegen.meta.MetaMethod;
import org.jboss.errai.codegen.meta.MetaParameter;
import org.jboss.errai.codegen.meta.MetaType;
import org.jboss.errai.codegen.meta.MetaTypeVariable;
import org.jboss.errai.common.client.api.Assert;
import com.google.common.reflect.TypeToken;
public class JavaReflectionMethod extends MetaMethod {
private final Method method;
private final MetaClass declaringClass;
private MetaParameter[] parameters;
private MetaClass returnType;
public JavaReflectionMethod(final Method method) {
this.declaringClass = MetaClassFactory.get(Assert.notNull(method.getDeclaringClass()));
this.method = Assert.notNull(method);
}
public JavaReflectionMethod(final MetaClass referenceClass, final Method method) {
this.declaringClass = Assert.notNull(referenceClass);
this.method = Assert.notNull(method);
}
@Override
public String getName() {
return method.getName();
}
@Override
public MetaParameter[] getParameters() {
if (parameters == null) {
final List<MetaParameter> parmList = new ArrayList<MetaParameter>();
final Class<?>[] parmTypes = method.getParameterTypes();
final Type[] genParmTypes = method.getGenericParameterTypes();
final Annotation[][] parameterAnnotations = method.getParameterAnnotations();
for (int i = 0; i < parmTypes.length; i++) {
final TypeToken<?> token = TypeToken.of(declaringClass.asClass());
final Class<?> parmType = token.resolveType(genParmTypes[i]).getRawType();
final MetaClass mcParm = MetaClassFactory.get(parmType, genParmTypes[i]);
parmList.add(new JavaReflectionParameter(mcParm, parameterAnnotations[i], this));
}
parameters = parmList.toArray(new MetaParameter[parmList.size()]);
}
return parameters;
}
@Override
public MetaClass getReturnType() {
if (returnType == null) {
returnType = MetaClassFactory.get(method.getReturnType());
}
return returnType;
}
@Override
public MetaType getGenericReturnType() {
return JavaReflectionUtil.fromType(method.getGenericReturnType());
}
@Override
public MetaType[] getGenericParameterTypes() {
return JavaReflectionUtil.fromTypeArray(method.getGenericParameterTypes());
}
@Override
public MetaTypeVariable[] getTypeParameters() {
return JavaReflectionUtil.fromTypeVariable(method.getTypeParameters());
}
private volatile Annotation[] _annotationsCache;
@Override
public synchronized Annotation[] getAnnotations() {
if (_annotationsCache != null)
return _annotationsCache;
return _annotationsCache = method.getAnnotations();
}
@Override
public MetaClass[] getCheckedExceptions() {
return MetaClassFactory.fromClassArray(method.getExceptionTypes());
}
@Override
public MetaClass getDeclaringClass() {
return declaringClass;
}
@Override
public String getDeclaringClassName() {
return declaringClass.getName();
}
@Override
public boolean isAbstract() {
return (method.getModifiers() & Modifier.ABSTRACT) != 0;
}
@Override
public boolean isPublic() {
return (method.getModifiers() & Modifier.PUBLIC) != 0;
}
@Override
public boolean isPrivate() {
return (method.getModifiers() & Modifier.PRIVATE) != 0;
}
@Override
public boolean isProtected() {
return (method.getModifiers() & Modifier.PROTECTED) != 0;
}
@Override
public boolean isFinal() {
return (method.getModifiers() & Modifier.FINAL) != 0;
}
@Override
public boolean isStatic() {
return (method.getModifiers() & Modifier.STATIC) != 0;
}
@Override
public boolean isTransient() {
return (method.getModifiers() & Modifier.TRANSIENT) != 0;
}
@Override
public boolean isVolatile() {
return false;
}
@Override
public boolean isSynthetic() {
return method.isSynthetic();
}
@Override
public boolean isSynchronized() {
return (method.getModifiers() & Modifier.SYNCHRONIZED) != 0;
}
@Override
public boolean isVarArgs() {
return method.isVarArgs();
}
@Override
public Method asMethod() {
return method;
}
}