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/*
* Copyright (c) 2013, 2016 Eike Stepper (Berlin, Germany) and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Eike Stepper - initial API and implementation
*/
package org.eclipse.emf.cdo.expressions.impl;
import org.eclipse.emf.cdo.expressions.EvaluationContext;
import org.eclipse.emf.cdo.expressions.ExpressionsPackage;
import org.eclipse.emf.cdo.expressions.FunctionInvocation;
import org.eclipse.net4j.util.WrappedException;
import org.eclipse.emf.ecore.EClass;
import java.lang.reflect.Constructor;
import java.util.List;
/**
* <!-- begin-user-doc -->
* An implementation of the model object '<em><b>Function Invocation</b></em>'.
* <!-- end-user-doc -->
*
* @generated
*/
public class FunctionInvocationImpl extends InvocationImpl implements FunctionInvocation
{
/**
* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @generated
*/
protected FunctionInvocationImpl()
{
super();
}
/**
* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @generated
*/
@Override
protected EClass eStaticClass()
{
return ExpressionsPackage.Literals.FUNCTION_INVOCATION;
}
@Override
protected boolean staticModifier()
{
return true;
}
@Override
protected void collectInvocables(EvaluationContext context, String name, List<Invocable> invocables)
{
int methodStart = name.lastIndexOf('.');
if (methodStart == -1)
{
throw new IllegalArgumentException("Method name missing: " + name);
}
String methodName = name.substring(methodStart + 1);
String className = name.substring(0, methodStart);
Class<?> c = context.getClass(className);
if ("new".equals(methodName))
{
for (Constructor<?> constructor : c.getConstructors())
{
invocables.add(createConstructor(constructor));
}
}
else
{
collectMethods(null, c, methodName, invocables);
}
}
protected Invocable createConstructor(final Constructor<?> constructor)
{
return new Invocable()
{
public String getName()
{
return "new";
}
public Class<?>[] getParameterTypes()
{
return constructor.getParameterTypes();
}
public Object invoke(Object[] arguments)
{
try
{
return constructor.newInstance(arguments);
}
catch (RuntimeException ex)
{
throw ex;
}
catch (Exception ex)
{
throw WrappedException.wrap(ex);
}
}
@Override
public String toString()
{
return constructor.toString();
}
};
}
// @Override
// protected Object evaluate(EvaluationContext context, String name, Object[] arguments)
// throws InvocationTargetException
// {
// int methodStart = name.lastIndexOf('.');
// if (methodStart == -1)
// {
// throw new IllegalArgumentException("Method name missing: " + name);
// }
//
// String className = name.substring(0, methodStart);
// String methodName = name.substring(methodStart + 1);
//
// try
// {
// Class<?> c = getClass(className);
// Class<?>[] argumentTypes = getTypes(arguments);
//
// if ("new".equals(methodName))
// {
// Constructor<?> constructor = c.getConstructor(argumentTypes);
// return constructor.newInstance(arguments);
// }
// else
// {
// Method method = c.getMethod(methodName, argumentTypes);
// if (!Modifier.isStatic(method.getModifiers()))
// {
// throw new IllegalArgumentException("Method is not static: " + name);
// }
//
// return method.invoke(null, arguments);
// }
// }
// catch (RuntimeException ex)
// {
// throw ex;
// }
// catch (InvocationTargetException ex)
// {
// throw ex;
// }
// catch (Exception ex)
// {
// throw new InvocationTargetException(ex);
// }
//
// // Object left = getLeft().evaluate(context);
// // Object right = getRight().evaluate(context);
// //
// // Operator operator = getOperator();
// // switch (operator)
// // {
// // case EQUAL:
// // return left.equals(right);
// //
// // case NOT_EQUAL:
// // return !left.equals(right);
// //
// // case LESS_THAN:
// // return ((Comparable<Object>)left).compareTo(right) < 0;
// //
// // case LESS_THAN_OR_EQUAL:
// // return ((Comparable<Object>)left).compareTo(right) <= 0;
// //
// // case GREATER_THAN:
// // return ((Comparable<Object>)left).compareTo(right) > 0;
// //
// // case GREATER_THAN_OR_EQUAL:
// // return ((Comparable<Object>)left).compareTo(right) >= 0;
// //
// // case AND:
// // return (Boolean)left && (Boolean)right;
// //
// // case OR:
// // return (Boolean)left || (Boolean)right;
// //
// // default:
// // throw new IllegalStateException("Unhandled operator: " + operator);
// // }
// //
// }
} // FunctionInvocationImpl
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