mirror of
https://github.com/sigmasternchen/xtext-core
synced 2025-03-17 01:08:56 +00:00
Next patch from Heiko
See https://bugs.eclipse.org/bugs/show_bug.cgi?id=247406
This commit is contained in:
jkohnlein
parent
17a48a5cc5
commit
dc1298b705
3 changed files with 109 additions and 90 deletions
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@ -292,6 +292,18 @@ public class GrammarUtil {
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}
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return kws;
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}
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public static boolean isBooleanAssignment(Assignment a) {
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return "?=".equals(a.getOperator());
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}
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public static boolean isSingleAssignment(Assignment a) {
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return "=".equals(a.getOperator());
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}
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public static boolean isMultipleAssignment(Assignment a) {
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return "+=".equals(a.getOperator());
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}
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public static boolean isOptionalCardinality(AbstractElement e) {
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return e.getCardinality() != null && (e.getCardinality().equals("?") || e.getCardinality().equals("*"));
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@ -27,13 +27,13 @@ public abstract class EClassifierInfo {
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private EClassifier eClassifier;
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private boolean isGenerated;
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private EClassifierInfo(EClassifier metaType, boolean isGenerated) {
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super();
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this.isGenerated = isGenerated;
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this.eClassifier = metaType;
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}
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public static EClassifierInfo createEClassInfo(EClass eClass, boolean isGenerated) {
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return new EClassInfo(eClass, isGenerated);
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}
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@ -51,8 +51,9 @@ public abstract class EClassifierInfo {
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}
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public abstract boolean addSupertype(EClassifierInfo superTypeInfo);
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public abstract boolean addFeature(String featureName, EClassifierInfo featureType);
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public abstract boolean addFeature(String featureName, EClassifierInfo featureType, boolean isMultivalue);
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static class EClassInfo extends EClassifierInfo {
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public EClassInfo(EClassifier metaType, boolean isGenerated) {
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@ -61,32 +62,33 @@ public abstract class EClassifierInfo {
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@Override
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public boolean addSupertype(EClassifierInfo superTypeInfo) {
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if(!isGenerated()){
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if (!isGenerated()) {
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throw new IllegalStateException("Generated Type cannot be modified.");
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}
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if(!(superTypeInfo instanceof EClassInfo)) {
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if (!(superTypeInfo instanceof EClassInfo)) {
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throw new IllegalArgumentException("superTypeInfo must represent EClass");
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}
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EClass eClass = (EClass)getEClass();
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EClass superEClass = (EClass)superTypeInfo.getEClass();
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EClass eClass = (EClass) getEClass();
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EClass superEClass = (EClass) superTypeInfo.getEClass();
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return eClass.getESuperTypes().add(superEClass);
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}
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@Override
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public boolean addFeature(String featureName,
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EClassifierInfo featureType) {
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public boolean addFeature(String featureName, EClassifierInfo featureType, boolean isMultivalue) {
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EClassifier featureClassifier = featureType.getEClass();
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EAttribute attribute = EcoreFactory.eINSTANCE.createEAttribute();
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EClassifier featureClassifier = featureType.getEClass();
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EAttribute attribute = EcoreFactory.eINSTANCE.createEAttribute();
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attribute.setName(featureName);
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attribute.setEType(featureClassifier);
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EList<EStructuralFeature> features = ((EClass)getEClass()).getEStructuralFeatures();
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attribute.setLowerBound(0);
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attribute.setUpperBound(isMultivalue ? -1 : 1);
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EList<EStructuralFeature> features = ((EClass) getEClass()).getEStructuralFeatures();
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return features.add(attribute);
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}
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}
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static class EDataTypeInfo extends EClassifierInfo {
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public EDataTypeInfo(EClassifier metaType, boolean isGenerated) {
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@ -99,10 +101,9 @@ public abstract class EClassifierInfo {
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}
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@Override
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public boolean addFeature(String featureName,
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EClassifierInfo featureType) {
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public boolean addFeature(String featureName, EClassifierInfo featureType, boolean isMultivalue) {
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throw new UnsupportedOperationException("Cannot add feature to simple datatype");
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}
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}
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}
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@ -75,10 +75,10 @@ public class Xtext2EcoreTransformer {
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EClassifierInfo generatedEClass = findOrCreateEClass(rule);
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if (rule instanceof ParserRule) {
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ParserRule parserRule = (ParserRule) rule;
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deriveTypesAndHierarchy(generatedEClass, parserRule
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.getAlternatives());
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deriveTypesAndHierarchy(generatedEClass, parserRule.getAlternatives());
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}
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} catch (TransformationException e) {
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}
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catch (TransformationException e) {
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reportError(e.getMessage(), e.getErroneousElement());
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}
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}
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@ -93,7 +93,8 @@ public class Xtext2EcoreTransformer {
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if (rule instanceof ParserRule) {
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this.deriveFeatures((ParserRule) rule);
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}
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} catch (TransformationException e) {
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}
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catch (TransformationException e) {
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reportError(e.getMessage(), e.getErroneousElement());
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}
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}
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@ -117,22 +118,29 @@ public class Xtext2EcoreTransformer {
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this.getEClassifierInfos().addAll(transformer.getEClassifierInfos());
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}
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private InterpretationContext deriveFeatures(InterpretationContext context,
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AbstractElement element) throws TransformationException {
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private InterpretationContext deriveFeatures(InterpretationContext context, AbstractElement element)
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throws TransformationException {
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if (element instanceof Assignment) {
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Assignment assignment = (Assignment) element;
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context.addFeature(assignment);
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} else if (element instanceof Group) {
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}
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else if (element instanceof Group) {
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Group group = (Group) element;
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return deriveFeatures(context, group.getAbstractTokens());
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}
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else if (element instanceof RuleCall && !GrammarUtil.isOptionalCardinality(element)) {
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RuleCall ruleCall = (RuleCall) element;
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AbstractRule calledRule = GrammarUtil.findRuleForName(grammar, ruleCall.getName());
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context = context.clone();
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context.currentType = findOrCreateEClass(calledRule);
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}
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return context;
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}
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private InterpretationContext deriveFeatures(InterpretationContext context,
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EList<AbstractElement> elements) throws TransformationException {
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for(AbstractElement element : elements) {
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private InterpretationContext deriveFeatures(InterpretationContext context, EList<AbstractElement> elements)
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throws TransformationException {
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for (AbstractElement element : elements) {
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context = deriveFeatures(context, element);
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}
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return context;
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@ -141,8 +149,7 @@ public class Xtext2EcoreTransformer {
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private void deriveFeatures(ParserRule rule) throws TransformationException {
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EClassifierInfo classInfo = findOrCreateEClass(rule);
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boolean isGenerated = classInfo.isGenerated();
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InterpretationContext context = new InterpretationContext(classInfo,
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isGenerated, true);
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InterpretationContext context = new InterpretationContext(classInfo, isGenerated, true);
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deriveFeatures(context, rule.getAlternatives());
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}
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@ -164,72 +171,80 @@ public class Xtext2EcoreTransformer {
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* @param alternatives
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* @throws TransformationException
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*/
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private void deriveTypesAndHierarchy(EClassifierInfo ruleReturnType,
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AbstractElement element) throws TransformationException {
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private void deriveTypesAndHierarchy(EClassifierInfo ruleReturnType, AbstractElement element)
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throws TransformationException {
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if (element instanceof RuleCall) {
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RuleCall ruleCall = (RuleCall) element;
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AbstractRule calledRule = GrammarUtil.calledRule(ruleCall);
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TypeRef calledRuleReturnTypeRef = getOrFakeReturnType(calledRule);
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addSuperType(calledRuleReturnTypeRef, ruleReturnType);
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} else if (element instanceof Action) {
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}
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else if (element instanceof Action) {
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Action action = (Action) element;
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TypeRef actionTypeRef = action.getTypeName();
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addSuperType(actionTypeRef, ruleReturnType);
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} else if (element instanceof Group) {
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}
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else if (element instanceof Group) {
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Group group = (Group) element;
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deriveTypesAndHierarchy(ruleReturnType, group.getAbstractTokens());
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} else if (element instanceof Alternatives) {
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}
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else if (element instanceof Alternatives) {
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Alternatives alternatives = (Alternatives) element;
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deriveTypesAndHierarchy(ruleReturnType, alternatives.getGroups());
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}
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}
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private void deriveTypesAndHierarchy(EClassifierInfo ruleReturnType,
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List<AbstractElement> elements) throws TransformationException {
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private void deriveTypesAndHierarchy(EClassifierInfo ruleReturnType, List<AbstractElement> elements)
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throws TransformationException {
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for (AbstractElement element : elements) {
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deriveTypesAndHierarchy(ruleReturnType, element);
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}
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}
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private void addSuperType(TypeRef subTypeRef, EClassifierInfo superType)
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throws TransformationException {
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private void addSuperType(TypeRef subTypeRef, EClassifierInfo superType) throws TransformationException {
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EClassifierInfo calledRuleReturnType = findOrCreateEClass(subTypeRef);
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calledRuleReturnType.addSupertype(superType);
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}
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class InterpretationContext {
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public InterpretationContext(EClassifierInfo currentType,
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boolean isGeneratedType, boolean isRuleCallAllowed) {
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public InterpretationContext(EClassifierInfo currentType, boolean isGeneratedType, boolean isRuleCallAllowed) {
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super();
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this.currentType = currentType;
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this.isGeneratedType = isGeneratedType;
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this.isRuleCallAllowed = isRuleCallAllowed;
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}
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public void addFeature(Assignment assignment)
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throws TransformationException {
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public void addFeature(Assignment assignment) throws TransformationException {
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String featureName = assignment.getFeature();
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RuleCall featureRuleCall = (RuleCall) assignment.getTerminal();
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AbstractRule featureTypeRule = GrammarUtil
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.calledRule(featureRuleCall);
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String featureTypeName = GrammarUtil
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.getReturnTypeName(featureTypeRule);
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EClassifierInfo featureTypeInfo = eClassifierInfos
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.getInfo(featureTypeName);
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if (featureTypeInfo == null) {
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throw new TransformationException(
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"Cannot resolve type of feature", assignment);
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boolean isMultivalue = GrammarUtil.isMultipleAssignment(assignment);
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EClassifierInfo featureTypeInfo;
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if (GrammarUtil.isBooleanAssignment(assignment)) {
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featureTypeInfo = getEClassifierInfoOrThrowException("ecore::EBoolean", assignment);
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isMultivalue = false;
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}
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else {
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RuleCall featureRuleCall = (RuleCall) assignment.getTerminal();
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AbstractRule featureTypeRule = GrammarUtil.calledRule(featureRuleCall);
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String featureTypeName = GrammarUtil.getReturnTypeName(featureTypeRule);
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featureTypeInfo = getEClassifierInfoOrThrowException(featureTypeName, assignment);
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}
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currentType.addFeature(featureName, featureTypeInfo);
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currentType.addFeature(featureName, featureTypeInfo, isMultivalue);
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}
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// TODO : fill Cardinality of attribute
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// this.currentType.getEStructuralFeatures().add(attribute);
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private EClassifierInfo getEClassifierInfoOrThrowException(String typeName, AbstractElement parserElement)
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throws TransformationException {
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EClassifierInfo featureTypeInfo = eClassifierInfos.getInfo(typeName);
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if (featureTypeInfo == null) {
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throw new TransformationException("Cannot resolve type " + typeName, parserElement);
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}
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return featureTypeInfo;
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}
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public InterpretationContext clone() {
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return new InterpretationContext(currentType, isGeneratedType,
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isRuleCallAllowed);
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return new InterpretationContext(currentType, isGeneratedType, isRuleCallAllowed);
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}
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// TODO : Use set of types to reflect mandatory actions
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@ -239,36 +254,33 @@ public class Xtext2EcoreTransformer {
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}
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private void collectEPackages() {
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EList<AbstractMetamodelDeclaration> metamodelDeclarations = grammar
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.getMetamodelDeclarations();
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EList<AbstractMetamodelDeclaration> metamodelDeclarations = grammar.getMetamodelDeclarations();
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for (AbstractMetamodelDeclaration metamodelDeclaration : metamodelDeclarations) {
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if (metamodelDeclaration instanceof ReferencedMetamodel) {
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// load imported metamodel
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ReferencedMetamodel referencedMetamodel = (ReferencedMetamodel) metamodelDeclaration;
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EPackage referencedEPackage = GrammarUtil
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.loadEPackage(referencedMetamodel);
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EPackage referencedEPackage = GrammarUtil.loadEPackage(referencedMetamodel);
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if (referencedEPackage == null) {
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reportError("Cannot not load metamodel "
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+ referencedMetamodel.getUri(), referencedMetamodel);
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} else {
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reportError("Cannot not load metamodel " + referencedMetamodel.getUri(), referencedMetamodel);
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}
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else {
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String alias = referencedMetamodel.getAlias();
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if (Strings.isEmpty(alias)) {
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reportError("Referenced metamodels must have an alias",
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referencedMetamodel);
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} else {
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reportError("Referenced metamodels must have an alias", referencedMetamodel);
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}
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else {
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collectClassInfosOf(referencedEPackage, alias);
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}
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}
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} else if (metamodelDeclaration instanceof GeneratedMetamodel) {
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}
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else if (metamodelDeclaration instanceof GeneratedMetamodel) {
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// instantiate EPackages for generated metamodel
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GeneratedMetamodel generatedMetamodel = (GeneratedMetamodel) metamodelDeclaration;
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EPackage generatedEPackage = EcoreFactory.eINSTANCE
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.createEPackage();
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EPackage generatedEPackage = EcoreFactory.eINSTANCE.createEPackage();
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generatedEPackage.setName(generatedMetamodel.getName());
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generatedEPackage.setNsPrefix(generatedMetamodel.getName());
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generatedEPackage.setNsURI(generatedMetamodel.getNsURI());
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String alias = Strings.emptyIfNull(generatedMetamodel
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.getAlias());
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String alias = Strings.emptyIfNull(generatedMetamodel.getAlias());
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generatedEPackages.put(alias, generatedEPackage);
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}
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}
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@ -278,13 +290,12 @@ public class Xtext2EcoreTransformer {
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for (EClassifier eClassifier : referencedEPackage.getEClassifiers()) {
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if (eClassifier instanceof EClass) {
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EClass eClass = (EClass) eClassifier;
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EClassifierInfo info = EClassifierInfo.createEClassInfo(eClass,
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false);
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EClassifierInfo info = EClassifierInfo.createEClassInfo(eClass, false);
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eClassifierInfos.addInfo(alias, eClassifier.getName(), info);
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} else if (eClassifier instanceof EDataType) {
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}
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else if (eClassifier instanceof EDataType) {
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EDataType eDataType = (EDataType) eClassifier;
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EClassifierInfo info = EClassifierInfo.createEDataTypeInfo(
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eDataType, false);
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EClassifierInfo info = EClassifierInfo.createEDataTypeInfo(eDataType, false);
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eClassifierInfos.addInfo(alias, eClassifier.getName(), info);
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}
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}
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@ -299,19 +310,16 @@ public class Xtext2EcoreTransformer {
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}
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private void raiseError(String message, EObject erroneousElement)
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throws TransformationException {
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private void raiseError(String message, EObject erroneousElement) throws TransformationException {
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throw new TransformationException(message, erroneousElement);
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}
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private EClassifierInfo findOrCreateEClass(AbstractRule rule)
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throws TransformationException {
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private EClassifierInfo findOrCreateEClass(AbstractRule rule) throws TransformationException {
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TypeRef typeRef = getOrFakeReturnType(rule);
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return findOrCreateEClass(typeRef);
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}
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private EClassifierInfo findOrCreateEClass(TypeRef typeRef)
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throws TransformationException {
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private EClassifierInfo findOrCreateEClass(TypeRef typeRef) throws TransformationException {
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EClassifierInfo info = eClassifierInfos.getInfo(typeRef);
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if (info == null) {
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info = createEClass(typeRef);
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@ -319,12 +327,10 @@ public class Xtext2EcoreTransformer {
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return info;
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}
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private EClassifierInfo createEClass(TypeRef typeRef)
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throws TransformationException {
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private EClassifierInfo createEClass(TypeRef typeRef) throws TransformationException {
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if (eClassifierInfos.getInfo(typeRef) != null)
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throw new IllegalArgumentException(
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"Cannot create EClass for same type twice"
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+ GrammarUtil.getQualifiedName(typeRef));
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throw new IllegalArgumentException("Cannot create EClass for same type twice"
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+ GrammarUtil.getQualifiedName(typeRef));
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EClassifierInfo info;
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String typeRefAlias = Strings.emptyIfNull(typeRef.getAlias());
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