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/*
* SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
*
* SPDX-License-Identifier: EPL-2.0
*/
package tools.refinery.language.utils;
import com.google.inject.Inject;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.xtext.naming.IQualifiedNameConverter;
import org.eclipse.xtext.naming.IQualifiedNameProvider;
import tools.refinery.language.model.problem.*;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
class SymbolCollector {
@Inject
private IQualifiedNameProvider qualifiedNameProvider;
@Inject
private IQualifiedNameConverter qualifiedNameConverter;
@Inject
private ProblemDesugarer desugarer;
private BuiltinSymbols builtinSymbols;
private final Map<Node, NodeInfo> nodes = new LinkedHashMap<>();
private final Map<Relation, RelationInfo> relations = new LinkedHashMap<>();
public CollectedSymbols collectSymbols(Problem problem) {
builtinSymbols = desugarer.getBuiltinSymbols(problem).orElseThrow(() -> new IllegalArgumentException(
"Problem has no associated built-in library"));
collectOwnSymbols(builtinSymbols.problem());
collectOwnSymbols(problem);
return new CollectedSymbols(nodes, relations);
}
public void collectOwnSymbols(Problem problem) {
collectOwnRelations(problem);
collectOwnNodes(problem);
collectOwnAssertions(problem);
}
private void collectOwnRelations(Problem problem) {
for (var statement : problem.getStatements()) {
if (statement instanceof PredicateDefinition predicateDefinition) {
collectPredicate(predicateDefinition);
} else if (statement instanceof ClassDeclaration classDeclaration) {
collectClass(classDeclaration);
} else if (statement instanceof EnumDeclaration enumDeclaration) {
collectEnum(enumDeclaration);
} else if (statement instanceof RuleDefinition) {
throw new UnsupportedOperationException("Rules are not currently supported");
}
}
}
private void collectPredicate(PredicateDefinition predicateDefinition) {
var predicateKind = predicateDefinition.getKind();
var info = new RelationInfo(getQualifiedNameString(predicateDefinition),
ContainmentRole.fromPredicateKind(predicateKind), predicateDefinition.getParameters(), null, null,
predicateDefinition.getBodies());
relations.put(predicateDefinition, info);
}
private void collectClass(ClassDeclaration classDeclaration) {
var contained = classDeclaration != builtinSymbols.node();
var containmentRole = contained ? ContainmentRole.CONTAINED : ContainmentRole.NONE;
var instanceParameter = ProblemFactory.eINSTANCE.createParameter();
instanceParameter.setName("instance");
var classInfo = new RelationInfo(getQualifiedNameString(classDeclaration), containmentRole,
List.of(instanceParameter), null, null, List.of());
relations.put(classDeclaration, classInfo);
collectFeatures(classDeclaration);
}
private void collectFeatures(ClassDeclaration classDeclaration) {
for (var featureDeclaration : classDeclaration.getFeatureDeclarations()) {
if (featureDeclaration instanceof ReferenceDeclaration referenceDeclaration) {
collectReference(classDeclaration, referenceDeclaration);
} else if (featureDeclaration instanceof AttributeDeclaration attributeDeclaration) {
collectAttribute(classDeclaration, attributeDeclaration);
} else if (featureDeclaration instanceof FlagDeclaration flagDeclaration) {
collectFlag(classDeclaration, flagDeclaration);
} else {
throw new IllegalArgumentException("Unknown FeatureDeclaration: " + featureDeclaration);
}
}
}
private void collectReference(ClassDeclaration classDeclaration, ReferenceDeclaration referenceDeclaration) {
var referenceRole = desugarer.isContainmentReference(referenceDeclaration) ?
ContainmentRole.CONTAINMENT :
ContainmentRole.NONE;
var sourceParameter = ProblemFactory.eINSTANCE.createParameter();
sourceParameter.setName("source");
sourceParameter.setParameterType(classDeclaration);
var targetParameter = ProblemFactory.eINSTANCE.createParameter();
targetParameter.setName("target");
var multiplicity = referenceDeclaration.getMultiplicity();
if (multiplicity == null) {
var exactMultiplicity = ProblemFactory.eINSTANCE.createExactMultiplicity();
exactMultiplicity.setExactValue(1);
multiplicity = exactMultiplicity;
}
targetParameter.setParameterType(referenceDeclaration.getReferenceType());
var referenceInfo = new RelationInfo(getQualifiedNameString(referenceDeclaration), referenceRole,
List.of(sourceParameter, targetParameter), multiplicity, referenceDeclaration.getOpposite(),
List.of());
this.relations.put(referenceDeclaration, referenceInfo);
}
private void collectAttribute(ClassDeclaration classDeclaration, AttributeDeclaration attributeDeclaration) {
// TODO Implement attribute handling.
}
private void collectFlag(ClassDeclaration classDeclaration, FlagDeclaration flagDeclaration) {
var parameter = ProblemFactory.eINSTANCE.createParameter();
parameter.setName("object");
parameter.setParameterType(classDeclaration);
var referenceInfo = new RelationInfo(getQualifiedNameString(flagDeclaration), ContainmentRole.NONE,
List.of(parameter), null, null, List.of());
this.relations.put(flagDeclaration, referenceInfo);
}
private void collectEnum(EnumDeclaration enumDeclaration) {
var instanceParameter = ProblemFactory.eINSTANCE.createParameter();
instanceParameter.setName("instance");
var info = new RelationInfo(getQualifiedNameString(enumDeclaration), ContainmentRole.NONE,
List.of(instanceParameter), null, null, List.of());
this.relations.put(enumDeclaration, info);
}
private void collectOwnNodes(Problem problem) {
for (var statement : problem.getStatements()) {
if (statement instanceof IndividualDeclaration individualDeclaration) {
collectIndividuals(individualDeclaration);
} else if (statement instanceof ClassDeclaration classDeclaration) {
collectNewNode(classDeclaration);
} else if (statement instanceof EnumDeclaration enumDeclaration) {
collectEnumLiterals(enumDeclaration);
}
}
for (var node : problem.getNodes()) {
addNode(node, false);
}
}
private void collectIndividuals(IndividualDeclaration individualDeclaration) {
for (var individual : individualDeclaration.getNodes()) {
addNode(individual, true);
}
}
private void collectNewNode(ClassDeclaration classDeclaration) {
var newNode = classDeclaration.getNewNode();
if (newNode != null) {
addNode(newNode, false);
}
}
private void collectEnumLiterals(EnumDeclaration enumDeclaration) {
for (var literal : enumDeclaration.getLiterals()) {
addNode(literal, true);
}
}
private void addNode(Node node, boolean individual) {
var info = new NodeInfo(getQualifiedNameString(node), individual);
this.nodes.put(node, info);
}
private String getQualifiedNameString(EObject eObject) {
var qualifiedName = qualifiedNameProvider.getFullyQualifiedName(eObject);
if (qualifiedName == null) {
return null;
}
return qualifiedNameConverter.toString(qualifiedName);
}
private void collectOwnAssertions(Problem problem) {
for (var statement : problem.getStatements()) {
if (statement instanceof Assertion assertion) {
collectAssertion(assertion);
} else if (statement instanceof PredicateDefinition predicateDefinition) {
collectPredicateAssertion(predicateDefinition);
} else if (statement instanceof ClassDeclaration classDeclaration) {
collectClassAssertion(classDeclaration);
} else if (statement instanceof EnumDeclaration enumDeclaration) {
collectEnumAssertions(enumDeclaration);
}
}
}
private void collectAssertion(Assertion assertion) {
var relationInfo = this.relations.get(assertion.getRelation());
if (relationInfo == null) {
throw new IllegalStateException("Assertion refers to unknown relation");
}
if (assertion.getArguments().size() != relationInfo.parameters().size()) {
// Silently ignoring assertions of invalid arity helps when SymbolCollector is called on an invalid
// Problem during editing. The errors can still be detected by the Problem validator.
return;
}
relationInfo.assertions().add(assertion);
}
private void collectPredicateAssertion(PredicateDefinition predicateDefinition) {
if (predicateDefinition.getKind() != PredicateKind.ERROR) {
return;
}
int arity = predicateDefinition.getParameters().size();
addAssertion(predicateDefinition, LogicValue.FALSE, new Node[arity]);
}
private void collectClassAssertion(ClassDeclaration classDeclaration) {
var node = classDeclaration.getNewNode();
if (node == null) {
return;
}
addAssertion(classDeclaration, LogicValue.TRUE, node);
addAssertion(builtinSymbols.exists(), LogicValue.UNKNOWN, node);
addAssertion(builtinSymbols.equals(), LogicValue.UNKNOWN, node, node);
}
private void collectEnumAssertions(EnumDeclaration enumDeclaration) {
for (var literal : enumDeclaration.getLiterals()) {
addAssertion(enumDeclaration, LogicValue.TRUE, literal);
}
}
private void addAssertion(Relation relation, LogicValue logicValue, Node... nodes) {
var assertion = ProblemFactory.eINSTANCE.createAssertion();
assertion.setRelation(relation);
for (var node : nodes) {
AssertionArgument argument;
if (node == null) {
argument = ProblemFactory.eINSTANCE.createWildcardAssertionArgument();
} else {
var nodeArgument = ProblemFactory.eINSTANCE.createNodeAssertionArgument();
nodeArgument.setNode(node);
argument = nodeArgument;
}
assertion.getArguments().add(argument);
}
var value = ProblemFactory.eINSTANCE.createLogicConstant();
value.setLogicValue(logicValue);
assertion.setValue(value);
collectAssertion(assertion);
}
}
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