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/*******************************************************************************
* Copyright (c) 2014 protos software gmbh (http://www.protos.de).
* 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:
* hrentz (initial contribution)
*
*******************************************************************************/
package org.eclipse.etrice.core.common.validation
import java.util.List
import java.util.Set
import org.eclipse.emf.ecore.EObject
import org.eclipse.emf.ecore.EStructuralFeature
import java.util.ArrayList
import org.eclipse.emf.ecore.resource.Resource
import com.google.common.base.Function
/**
* @author hrentz
*
*/
class ValidationHelpers {
public static class NamedObject {
@Property String name
@Property EObject obj
@Property EStructuralFeature feature
new(String name, EObject obj, EStructuralFeature feature) {
this.name = name
this.obj = obj
this.feature = feature
}
}
public static class NamedObjectList extends ArrayList<NamedObject> {
def addAll(List<? extends EObject> items, EStructuralFeature feature) {
items.forEach[this.add(new NamedObject(it.eGet(feature) as String, it, feature))]
}
}
def static Iterable<NamedObject> removeUniques(List<NamedObject> items) {
val Set<String> allOfName = newHashSet
val Set<String> duplicateNames = newHashSet
// first sweep: determine duplicate names
for (i : items) {
// if the name already occurred we have a duplicate name and hence an error
if (allOfName.contains(i.name)) {
duplicateNames.add(i.name)
}
else {
allOfName.add(i.name);
}
}
// second sweep: remove duplicates
items.filter(i|duplicateNames.contains(i.name))
}
def static Iterable<NamedObject> inSameResource(Iterable<NamedObject> items, Resource resource) {
items.filter(i|i.obj.eResource==resource)
}
/**
* Visitor for inheritance, safeguards from null, eProxy and circular issues.
*
* @param start EObject, may be null
* @param function return null to exit
*/
def static <E extends EObject> saveRecursiveVisitor(E start, Function<E , E> function){
val Set<E> visited = newHashSet
var E next = start
while(next !== null && !next.eIsProxy && (visited += next))
next = function.apply(next)
}
}
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