/**
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright (C) 2007 Matthias Braeuer (braeuer.matthias@web.de). *
* All rights reserved. *
* *
* This work was done as a project at the Chair for Software Technology, *
* Dresden University Of Technology, Germany (http://st.inf.tu-dresden.de). *
* It is understood that any modification not identified as such is not *
* covered by the preceding statement. *
* *
* This work is free software; you can redistribute it and/or modify it *
* under the terms of the GNU Library General Public License as published *
* by the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This work is distributed in the hope that it will be useful, but WITHOUT *
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or *
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public *
* License for more details. *
* *
* You should have received a copy of the GNU Library General Public License *
* along with this library; if not, you can view it online at *
* http://www.fsf.org/licensing/licenses/gpl.html. *
* *
* To submit a bug report, send a comment, or get the latest news on this *
* project, please visit the website: http://dresden-ocl.sourceforge.net. *
* For more information on OCL and related projects visit the OCL Portal: *
* http://st.inf.tu-dresden.de/ocl *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
*
* $Id$
*/
package org.dresdenocl.essentialocl.expressions.impl;
import org.apache.log4j.Logger;
import org.eclipse.emf.common.notify.Notification;
import org.eclipse.emf.common.notify.NotificationChain;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.InternalEObject;
import org.eclipse.emf.ecore.impl.ENotificationImpl;
import org.dresdenocl.essentialocl.expressions.IterateExp;
import org.dresdenocl.essentialocl.expressions.Variable;
import org.dresdenocl.essentialocl.expressions.WellformednessException;
import org.dresdenocl.pivotmodel.Type;
/**
* <!-- begin-user-doc --> An implementation of the model object '<em><b>Iterate Exp</b></em>'.
* <!-- end-user-doc -->
* <p>
* The following features are implemented:
* <ul>
* <li>{@link org.dresdenocl.essentialocl.expressions.impl.IterateExpImpl#getResult <em>Result</em>}</li>
* </ul>
* </p>
*
* @generated
*/
public class IterateExpImpl extends LoopExpImpl implements IterateExp {
/**
* Logger for this class
*/
private static final Logger logger = Logger.getLogger(IterateExpImpl.class);
/**
* The cached value of the '{@link #getResult() <em>Result</em>}' containment reference.
* <!-- begin-user-doc --> <!-- end-user-doc -->
* @see #getResult()
* @generated
* @ordered
*/
protected Variable result;
/**
* <!-- begin-user-doc --> <!-- end-user-doc -->
* @generated
*/
protected IterateExpImpl() {
super();
}
/**
* Overridden to determine the type of the <code>IterateExp</code> according
* to the OCL specification (Section 8.3):
*
* <p>
* The type of the iterate is the type of the result variable.
*
* <pre>
* context IterateExp
* inv: type = result.type
* </pre>
*
* In addition, the following wellformedness rules are checked:<br>
* <br>
*
* The type of the body expression must conform to the declared type of the
* result variable. context IterateExp
*
* <pre>
* inv: body.type.conformsTo(result.type)
* </pre>
*
* A result variable must have an init expression.
*
* <pre>
* context IterateExp
* inv: self.result.initExpression->size() = 1
* </pre>
*
* </p>
*
* @see org.dresdenocl.essentialocl.expressions.impl.OclExpressionImpl#evaluateType()
*/
@Override
protected Type evaluateType() {
if (logger.isDebugEnabled()) {
logger.debug("evaluateType() - enter"); //$NON-NLS-1$
}
// check invariant
if (result == null) {
throw new WellformednessException(this,
"The 'result' variable of an IterateExp must not be null."); //$NON-NLS-1$
}
// check body expression and WFR [2]
if (body == null) {
throw new WellformednessException(this,
"The body expression of an IterateExp must not be null."); //$NON-NLS-1$
}
if (!body.getType().conformsTo(result.getType())) {
throw new WellformednessException(
this,
"The type of the body expression ('" + body.getType() //$NON-NLS-1$
+ "') must conform to the type of the result variable ('" //$NON-NLS-1$
+ result.getType() + "')."); //$NON-NLS-1$
}
// check WFR [3]
if (result.getInitExpression() == null) {
throw new WellformednessException(this,
"The 'result' variable of an IterateExp must have an init expression."); //$NON-NLS-1$
}
// determine the type
Type type = result.getType();
if (logger.isDebugEnabled()) {
logger.debug("evaluateType() - exit - return value=" + type); //$NON-NLS-1$
}
return type;
}
/**
* Overridden to return the String <code>"iterate"</code> as specified in
* the abstract syntax mapping for IterateExpCS (OCL Specification, Section
* 9.3). Clients (e.g., a parser) do not need to set the name explicitly.
*
* @see org.dresdenocl.pivotmodel.impl.NamedElementImpl#getName()
*/
@Override
public String getName() {
return "iterate"; //$NON-NLS-1$
}
/**
* Overridden to prevent setting the name of an iterate expression. This
* method will throw an {@link UnsupportedOperationException}.
*
* @see org.dresdenocl.pivotmodel.impl.NamedElementImpl#setName(java.lang.String)
*/
@Override
public void setName(String newName) {
throw new UnsupportedOperationException(
"The name of an IterateExp cannot be set, it defaults to 'iterate'"); //$NON-NLS-1$
}
/**
* <!-- begin-user-doc --> <!-- end-user-doc -->
* @generated
*/
public Variable getResult() {
return result;
}
/**
* <!-- begin-user-doc --> <!-- end-user-doc -->
* @generated
*/
public NotificationChain basicSetResult(Variable newResult,
NotificationChain msgs) {
Variable oldResult = result;
result = newResult;
if (eNotificationRequired()) {
ENotificationImpl notification = new ENotificationImpl(this,
Notification.SET,
ExpressionsPackageImpl.ITERATE_EXP__RESULT, oldResult,
newResult);
if (msgs == null)
msgs = notification;
else
msgs.add(notification);
}
return msgs;
}
/**
* <!-- begin-user-doc --> <!-- end-user-doc -->
* @generated
*/
public void setResult(Variable newResult) {
if (newResult != result) {
NotificationChain msgs = null;
if (result != null)
msgs = ((InternalEObject) result).eInverseRemove(this,
EOPPOSITE_FEATURE_BASE
- ExpressionsPackageImpl.ITERATE_EXP__RESULT,
null, msgs);
if (newResult != null)
msgs = ((InternalEObject) newResult).eInverseAdd(this,
EOPPOSITE_FEATURE_BASE
- ExpressionsPackageImpl.ITERATE_EXP__RESULT,
null, msgs);
msgs = basicSetResult(newResult, msgs);
if (msgs != null)
msgs.dispatch();
} else if (eNotificationRequired())
eNotify(new ENotificationImpl(this, Notification.SET,
ExpressionsPackageImpl.ITERATE_EXP__RESULT, newResult,
newResult));
}
/**
* <!-- begin-user-doc --> <!-- end-user-doc -->
* @generated
*/
@Override
public NotificationChain eInverseRemove(InternalEObject otherEnd,
int featureID, NotificationChain msgs) {
switch (featureID) {
case ExpressionsPackageImpl.ITERATE_EXP__RESULT:
return basicSetResult(null, msgs);
}
return super.eInverseRemove(otherEnd, featureID, msgs);
}
/**
* <!-- begin-user-doc --> <!-- end-user-doc -->
* @generated
*/
@Override
public Object eGet(int featureID, boolean resolve, boolean coreType) {
switch (featureID) {
case ExpressionsPackageImpl.ITERATE_EXP__RESULT:
return getResult();
}
return super.eGet(featureID, resolve, coreType);
}
/**
* <!-- begin-user-doc --> <!-- end-user-doc -->
* @generated
*/
@Override
public void eSet(int featureID, Object newValue) {
switch (featureID) {
case ExpressionsPackageImpl.ITERATE_EXP__RESULT:
setResult((Variable) newValue);
return;
}
super.eSet(featureID, newValue);
}
/**
* <!-- begin-user-doc --> <!-- end-user-doc -->
* @generated
*/
@Override
public void eUnset(int featureID) {
switch (featureID) {
case ExpressionsPackageImpl.ITERATE_EXP__RESULT:
setResult((Variable) null);
return;
}
super.eUnset(featureID);
}
/**
* <!-- begin-user-doc --> <!-- end-user-doc -->
* @generated
*/
@Override
public boolean eIsSet(int featureID) {
switch (featureID) {
case ExpressionsPackageImpl.ITERATE_EXP__RESULT:
return result != null;
}
return super.eIsSet(featureID);
}
/**
* <!-- begin-user-doc --> <!-- end-user-doc -->
* @generated
*/
@Override
protected EClass eStaticClass() {
return ExpressionsPackageImpl.Literals.ITERATE_EXP;
}
} // IterateExpImpl