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UniqueObjectNamingCoco.java
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UniqueObjectNamingCoco.java
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/* (c) https://github.com/MontiCore/monticore */
package de.monticore.lang.sdbasis._cocos;
import com.google.common.collect.Sets;
import de.monticore.lang.sdbasis._ast.ASTSDObject;
import de.monticore.lang.sdbasis._ast.ASTSequenceDiagram;
import de.se_rwth.commons.logging.Log;
import java.util.Collections;
import java.util.List;
import java.util.Set;
import java.util.stream.Collectors;
/**
* Checks if every object has a unique name.
*/
public class UniqueObjectNamingCoco implements SDBasisASTSequenceDiagramCoCo {
private static final String MESSAGE_ERROR_IDENTIFIER_AMBIGUOUS = "0xB0024: "
+ "Identifier %s is ambiguous.";
@Override
public void check(ASTSequenceDiagram sd) {
List<ASTSDObject> objects = sd.getSDObjectList();
if (hasDuplicatedObjectNames(objects)) {
List<String> duplicates = getDuplicatedObjectNames(objects);
duplicates.forEach(
duplicate -> Log.error(String.format(MESSAGE_ERROR_IDENTIFIER_AMBIGUOUS, duplicate))
);
}
}
private List<String> getNamesOfObject(List<ASTSDObject> sdObjects) {
return sdObjects.stream().map(ASTSDObject::getName).collect(Collectors.toList());
}
private boolean hasDuplicatedObjectNames(List<ASTSDObject> sdObjects) {
List<String> names = getNamesOfObject(sdObjects);
Set<String> uniqueNames = Sets.newHashSet(names);
return names.size() != uniqueNames.size();
}
private List<String> getDuplicatedObjectNames(List<ASTSDObject> sdObjects) {
List<String> names = sdObjects.stream().map(ASTSDObject::getName).collect(Collectors.toList());
return getDuplicates(names);
}
/**
* Returns the list of all values contained in ts occurring at least twice in ts.
*
* @param ts some list
* @param <T> the type of the elements in the list
* @return the list containing the duplicated values.
*/
private <T> List<T> getDuplicates(List<T> ts) {
return ts.stream()
.filter(e -> Collections.frequency(ts, e) > 1)
.distinct()
.collect(Collectors.toList());
}
}