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/*
* SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
*
* SPDX-License-Identifier: EPL-2.0
*/
/*
* generated by Xtext 2.25.0
*/
package tools.refinery.language.validation;
import org.eclipse.xtext.EcoreUtil2;
import org.eclipse.xtext.validation.Check;
import com.google.inject.Inject;
import tools.refinery.language.model.problem.*;
import tools.refinery.language.resource.ReferenceCounter;
import tools.refinery.language.utils.ProblemUtil;
/**
* This class contains custom validation rules.
* <p>
* See
* <a href="https://www.eclipse.org/Xtext/documentation/303_runtime_concepts.html#validation">...</a>
*/
public class ProblemValidator extends AbstractProblemValidator {
private static final String ISSUE_PREFIX = "tools.refinery.language.validation.ProblemValidator.";
public static final String SINGLETON_VARIABLE_ISSUE = ISSUE_PREFIX + "SINGLETON_VARIABLE";
public static final String NON_INDIVIDUAL_NODE_ISSUE = ISSUE_PREFIX + "NON_INDIVIDUAL_NODE";
@Inject
private ReferenceCounter referenceCounter;
@Check
public void checkUniqueVariable(VariableOrNodeExpr expr) {
var variableOrNode = expr.getVariableOrNode();
if (variableOrNode instanceof Variable variable && ProblemUtil.isImplicitVariable(variable)
&& !ProblemUtil.isSingletonVariable(variable)) {
var problem = EcoreUtil2.getContainerOfType(variable, Problem.class);
if (problem != null && referenceCounter.countReferences(problem, variable) <= 1) {
var name = variable.getName();
var message = ("Variable '%s' has only a single reference. " +
"Add another reference or mark is as a singleton variable: '_%s'").formatted(name, name);
warning(message, expr, ProblemPackage.Literals.VARIABLE_OR_NODE_EXPR__VARIABLE_OR_NODE,
INSIGNIFICANT_INDEX, SINGLETON_VARIABLE_ISSUE);
}
}
}
@Check
public void checkNonUniqueNode(VariableOrNodeExpr expr) {
var variableOrNode = expr.getVariableOrNode();
if (variableOrNode instanceof Node node && !ProblemUtil.isIndividualNode(node)) {
var name = node.getName();
var message = ("Only individuals can be referenced in predicates. " +
"Mark '%s' as individual with the declaration 'indiv %s.'").formatted(name, name);
error(message, expr, ProblemPackage.Literals.VARIABLE_OR_NODE_EXPR__VARIABLE_OR_NODE,
INSIGNIFICANT_INDEX, NON_INDIVIDUAL_NODE_ISSUE);
}
}
}
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