Java Code Examples for org.eclipse.xtext.scoping.IScope#getSingleElement()
The following examples show how to use
org.eclipse.xtext.scoping.IScope#getSingleElement() .
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Example 1
Source File: TestLanguageReferenceUpdater.java From xtext-core with Eclipse Public License 2.0 | 6 votes |
@Override public void updateReference(ITextRegionDiffBuilder rewriter, IUpdatableReference ref) { if (rewriter.isModified(ref.getReferenceRegion())) { return; } IScope scope = scopeProvider.getScope(ref.getSourceEObject(), ref.getEReference()); ISemanticRegion region = ref.getReferenceRegion(); QualifiedName oldName = nameConverter.toQualifiedName(region.getText()); IEObjectDescription oldDesc = scope.getSingleElement(oldName); if (oldDesc != null && oldDesc.getEObjectOrProxy() == ref.getTargetEObject()) { return; } String newName = findValidName(ref, scope); if (newName != null) { if (oldName.getSegmentCount() > 1) { newName = oldName.skipLast(1).append(newName).toString(); } rewriter.replace(region, newName); } }
Example 2
Source File: ReferenceUpdater.java From xtext-core with Eclipse Public License 2.0 | 6 votes |
@Override public void updateReference(ITextRegionDiffBuilder rewriter, IUpdatableReference upd) { IUpdatableReference updatable = upd; if (rewriter.isModified(updatable.getReferenceRegion())) { return; } IScope scope = scopeProvider.getScope(updatable.getSourceEObject(), updatable.getEReference()); ISemanticRegion region = updatable.getReferenceRegion(); QualifiedName oldName = nameConverter.toQualifiedName(region.getText()); IEObjectDescription oldDesc = scope.getSingleElement(oldName); if (oldDesc != null && oldDesc.getEObjectOrProxy() == updatable.getTargetEObject()) { return; } String newName = findValidName(updatable, scope); if (newName != null) { rewriter.replace(region, newName); } }
Example 3
Source File: XtendValidator.java From xtext-xtend with Eclipse Public License 2.0 | 6 votes |
@Check public void checkJavaDocRefs(XtendMember member){ if(isIgnored(IssueCodes.JAVA_DOC_LINKING_DIAGNOSTIC)) return; List<INode> documentationNodes = ((IEObjectDocumentationProviderExtension) documentationProvider).getDocumentationNodes(member); for(INode node : documentationNodes){ for(ReplaceRegion region : javaDocTypeReferenceProvider.computeTypeRefRegions(node)){ String typeRefString = region.getText(); if(typeRefString != null && typeRefString.length() > 0){ IScope scope = scopeProvider.getScope(member, TypesPackage.Literals.JVM_PARAMETERIZED_TYPE_REFERENCE__TYPE); IEObjectDescription candidate = scope.getSingleElement(qualifiedNameConverter.toQualifiedName(typeRefString)); if(candidate == null){ Severity severity = getIssueSeverities(getContext(), getCurrentObject()).getSeverity(IssueCodes.JAVA_DOC_LINKING_DIAGNOSTIC); if (severity != null) getChain().add(createDiagnostic(severity, "javaDoc: " + typeRefString + " cannot be resolved to a type", member, region.getOffset(), region.getLength(), IssueCodes.JAVA_DOC_LINKING_DIAGNOSTIC)); } } } } }
Example 4
Source File: TypeLiteralScope.java From xtext-extras with Eclipse Public License 2.0 | 6 votes |
@Override protected List<IEObjectDescription> getLocalElementsByName(QualifiedName name) { XAbstractFeatureCall featureCall = getFeatureCall(); if (featureCall.isExplicitOperationCallOrBuilderSyntax()) return Collections.emptyList(); QualifiedName fqn = parentSegments.append(name); IScope typeScope = getSession().getScope(getFeatureCall(), TypesPackage.Literals.JVM_PARAMETERIZED_TYPE_REFERENCE__TYPE, resolvedTypes); IEObjectDescription typeDescription = typeScope.getSingleElement(fqn); if (typeDescription != null) { EObject type = typeDescription.getEObjectOrProxy(); if (type instanceof JvmType) return Collections.<IEObjectDescription>singletonList(new TypeLiteralDescription( new AliasedEObjectDescription(name, typeDescription), isVisible((JvmType) type))); } return Collections.emptyList(); }
Example 5
Source File: UnionMemberScope.java From n4js with Eclipse Public License 1.0 | 6 votes |
@Override protected IEObjectDescription getCheckedDescription(String name, TMember member) { IEObjectDescription description = EObjectDescription.create(member.getName(), member); QualifiedName qn = QualifiedName.create(name); for (IScope currSubScope : subScopes) { IEObjectDescription subDescription = currSubScope.getSingleElement(qn); boolean descrWithError = subDescription == null || IEObjectDescriptionWithError.isErrorDescription(subDescription); if (descrWithError) { return createComposedMemberDescriptionWithErrors(description); } } return description; }
Example 6
Source File: IntersectionMemberScope.java From n4js with Eclipse Public License 1.0 | 6 votes |
@Override protected IEObjectDescription getCheckedDescription(String name, TMember member) { IEObjectDescription description = EObjectDescription.create(member.getName(), member); QualifiedName qn = QualifiedName.create(name); boolean allDescrWithError = true; for (IScope currSubScope : subScopes) { IEObjectDescription subDescription = currSubScope.getSingleElement(qn); boolean descrWithError = subDescription == null || IEObjectDescriptionWithError.isErrorDescription(subDescription); allDescrWithError &= descrWithError; } if (allDescrWithError) { return createComposedMemberDescriptionWithErrors(description); } return description; }
Example 7
Source File: CompositeScope.java From n4js with Eclipse Public License 1.0 | 6 votes |
@Override public IEObjectDescription getSingleElement(EObject object) { IEObjectDescription result = null; for (IScope currScope : childScopes) { final IEObjectDescription currResult = currScope.getSingleElement(object); if (currResult != null) { if (!(IEObjectDescriptionWithError.isErrorDescription(currResult))) { return currResult; // no error, use scope order as precedence (first one wins) and return } if (result == null) { result = currResult; // with error, maybe we find something w/o error in following scope, do not // return yet } } } return result; // return null or (first) description with error }
Example 8
Source File: CompositeScope.java From n4js with Eclipse Public License 1.0 | 6 votes |
@Override public IEObjectDescription getSingleElement(QualifiedName name) { IEObjectDescription result = null; for (IScope currScope : childScopes) { final IEObjectDescription currResult = currScope.getSingleElement(name); if (currResult != null) { if (!(IEObjectDescriptionWithError.isErrorDescription(currResult))) { return currResult; // no error, use scope order as precedence (first one wins) and return } if (result == null) { result = currResult; // with error, maybe we find something w/o error in following scope, do not // return yet } } } return result; // return null or (first) description with error }
Example 9
Source File: ComposedMemberScope.java From n4js with Eclipse Public License 1.0 | 5 votes |
/** * Searches for a member of the given name and for the given access in the sub-scope with index 'subScopeIdx'. */ private TMember findMemberInSubScope(IScope subScope, String name) { final IEObjectDescription currElem = subScope.getSingleElement(QualifiedName.create(name)); if (currElem != null) { final EObject objOrProxy = currElem.getEObjectOrProxy(); if (objOrProxy != null && !objOrProxy.eIsProxy() && objOrProxy instanceof TMember) { final TMember currM = (TMember) objOrProxy; return currM; } } return null; }
Example 10
Source File: ImportsCollector.java From xtext-extras with Eclipse Public License 2.0 | 5 votes |
private void addJavaDocReferences(final INode documentationNode, final ITextRegion selectedRegion, final ImportsAcceptor acceptor) { List<ReplaceRegion> _computeTypeRefRegions = this.javaDocTypeReferenceProvider.computeTypeRefRegions(documentationNode); for (final ReplaceRegion docTypeReference : _computeTypeRefRegions) { { int _offset = docTypeReference.getOffset(); int _length = docTypeReference.getLength(); final TextRegion referenceRange = new TextRegion(_offset, _length); boolean _contains = selectedRegion.contains(referenceRange); if (_contains) { String docTypeText = docTypeReference.getText(); final EObject element = NodeModelUtils.findActualSemanticObjectFor(documentationNode); IScope scope = this.scopeProvider.getScope(element, TypesPackage.Literals.JVM_PARAMETERIZED_TYPE_REFERENCE__TYPE); IEObjectDescription singleElement = scope.getSingleElement(QualifiedName.create(docTypeText)); JvmType referencedType = null; if ((singleElement != null)) { EObject _eObjectOrProxy = singleElement.getEObjectOrProxy(); referencedType = ((JvmType) _eObjectOrProxy); } if (((referencedType instanceof JvmDeclaredType) && (!referencedType.eIsProxy()))) { JvmDeclaredType casted = ((JvmDeclaredType) referencedType); boolean _equals = casted.getQualifiedName().equals(docTypeText); boolean _not = (!_equals); if (_not) { acceptor.acceptTypeImport(casted); } } } } } }
Example 11
Source File: JvmModelReferenceUpdater.java From xtext-eclipse with Eclipse Public License 2.0 | 5 votes |
/** * Preserves the syntax of method calls if the target is refactored. * * @since 2.4 */ @Override protected RefTextEvaluator getRefTextEvaluator(final EObject referringElement, URI referringResourceURI, final EReference reference, int indexInList, EObject newTargetElement) { final ReferenceSyntax oldReferenceSyntax = getReferenceSyntax(referringElement, reference, indexInList); if (oldReferenceSyntax == null) return super.getRefTextEvaluator(referringElement, referringResourceURI, reference, indexInList, newTargetElement); return new RefTextEvaluator() { @Override public boolean isValid(IEObjectDescription newTarget) { IScope scope = linkingScopeProvider.getScope(referringElement, reference); IEObjectDescription element = scope.getSingleElement(newTarget.getName()); // TODO here we need to simulate linking with the new name instead of the old name if(element instanceof IIdentifiableElementDescription) { IIdentifiableElementDescription casted = (IIdentifiableElementDescription) element; if(!casted.isVisible() || !casted.isValidStaticState()) return false; } return element != null && element.getEObjectURI() != null && element.getEObjectURI().equals(newTarget.getEObjectURI()); } @Override public boolean isBetterThan(String newText, String currentText) { ReferenceSyntax newSyntax = getReferenceSyntax(newText); ReferenceSyntax currentSyntax = getReferenceSyntax(currentText); // prefer the one with the same syntax as before if (newSyntax == oldReferenceSyntax && currentSyntax != oldReferenceSyntax) return true; else if (newSyntax != oldReferenceSyntax && currentSyntax == oldReferenceSyntax) return false; else // in doubt shorter is better return newText.length() < currentText.length(); } }; }
Example 12
Source File: ConstantExpressionsInterpreter.java From xtext-xtend with Eclipse Public License 2.0 | 5 votes |
protected JvmType findTypeByName(final EObject context, final String qualifiedName) { final IScope scope = this.scopeProvider.getScope(context, TypesPackage.Literals.JVM_PARAMETERIZED_TYPE_REFERENCE__TYPE); final QualifiedName qn = this.qualifiedNameConverter.toQualifiedName(qualifiedName); IEObjectDescription _singleElement = scope.getSingleElement(qn); EObject _eObjectOrProxy = null; if (_singleElement!=null) { _eObjectOrProxy=_singleElement.getEObjectOrProxy(); } return ((JvmType) _eObjectOrProxy); }
Example 13
Source File: XbaseReferenceUpdater.java From xtext-eclipse with Eclipse Public License 2.0 | 5 votes |
protected boolean canLinkJvmType(EObject referringElement, JvmType type) { if (type == null) { return false; } QualifiedName qualifiedName = qualifiedNameProvider.getFullyQualifiedName(type); if (qualifiedName == null) { return false; } IScope scope = getLinkingScopeProvider().getScope(referringElement, TypesPackage.Literals.JVM_PARAMETERIZED_TYPE_REFERENCE__TYPE); return scope.getSingleElement(qualifiedName) != null; }
Example 14
Source File: XbaseReferenceUpdater.java From xtext-eclipse with Eclipse Public License 2.0 | 5 votes |
/** * constructor calls and type references are import aware, but only type reference can be disambiguated by using * #getSingleElement */ protected boolean isReferencedByQualifiedName(EObject referringElement, JvmType newTargetType, QualifiedName importRelativeName) { IScope scope = getLinkingScopeProvider().getScope(referringElement, TypesPackage.Literals.JVM_PARAMETERIZED_TYPE_REFERENCE__TYPE); IEObjectDescription singleElement = scope.getSingleElement(importRelativeName); if (singleElement == null) { return false; } EObject resolvedSingleElement = EcoreUtil.resolve(singleElement.getEObjectOrProxy(), referringElement); return resolvedSingleElement != EcoreUtil2.getContainerOfType(newTargetType, JvmDeclaredType.class); }
Example 15
Source File: DefaultLinkingService.java From xtext-core with Eclipse Public License 2.0 | 5 votes |
/** * @return the first element returned from the injected {@link IScopeProvider} which matches the text of the passed * {@link INode node} */ @Override public List<EObject> getLinkedObjects(EObject context, EReference ref, INode node) throws IllegalNodeException { final EClass requiredType = ref.getEReferenceType(); if (requiredType == null) { return Collections.<EObject>emptyList(); } final String crossRefString = getCrossRefNodeAsString(node); if (crossRefString == null || crossRefString.equals("")) { return Collections.<EObject>emptyList(); } if (logger.isDebugEnabled()) { logger.debug("before getLinkedObjects: node: '" + crossRefString + "'"); } final IScope scope = getScope(context, ref); if (scope == null) { throw new AssertionError( "Scope provider " + scopeProvider.getClass().getName() + " must not return null for context " + context + ", reference " + ref + "! Consider to return IScope.NULLSCOPE instead."); } final QualifiedName qualifiedLinkName = qualifiedNameConverter.toQualifiedName(crossRefString); final IEObjectDescription eObjectDescription = scope.getSingleElement(qualifiedLinkName); if (logger.isDebugEnabled()) { logger.debug("after getLinkedObjects: node: '" + crossRefString + "' result: " + eObjectDescription); } if (eObjectDescription == null) { return Collections.emptyList(); } final EObject result = eObjectDescription.getEObjectOrProxy(); return Collections.singletonList(result); }
Example 16
Source File: CrossReferenceSerializer.java From xtext-core with Eclipse Public License 2.0 | 5 votes |
protected String getUnconvertedLinkText(EObject object, EReference reference, EObject context) { IScope scope = scopeProvider.getScope(context, reference); if (scope == null) return null; IEObjectDescription eObjectDescription = scope.getSingleElement(object); if (eObjectDescription != null) { return qualifiedNameConverter.toString(eObjectDescription.getName()); } return null; }
Example 17
Source File: SpecInfosByName.java From n4js with Eclipse Public License 1.0 | 5 votes |
private RepoRelativePath computeRRP(FullMemberReference ref, TMember testMember) { IScope scope = globalScopeProvider.getScope(testMember.eResource(), N4JSPackage.Literals.IMPORT_DECLARATION__MODULE); QualifiedName qn = QualifiedName.create(ref.getModuleName().split("/")); IEObjectDescription eod = scope.getSingleElement(qn); if (eod != null) { FileURI uri = new FileURI(eod.getEObjectURI()); RepoRelativePath rrp = RepoRelativePath.compute(uri, n4jsCore); return rrp; } else { issueAcceptor.addWarning("Cannot resolve testee " + ref, testMember); return null; } }
Example 18
Source File: MultiLineJavaDocTypeReferenceProvider.java From xtext-core with Eclipse Public License 2.0 | 4 votes |
protected IEObjectDescription getElementFromScope(IScope scope, INode node, ITextRegion region, String text) { return scope.getSingleElement(qualifiedNameConverter.toQualifiedName(text)); }
Example 19
Source File: XbaseHoverDocumentationProvider.java From xtext-eclipse with Eclipse Public License 2.0 | 4 votes |
protected void handleLink(List<?> fragments) { if (fragments == null || fragments.isEmpty()) { return; } URI elementURI = null; String firstFragment = fragments.get(0).toString(); int hashIndex = firstFragment.indexOf("#"); if (hashIndex != -1) { JvmDeclaredType resolvedDeclarator = getResolvedDeclarator(firstFragment.substring(0, hashIndex)); if (resolvedDeclarator != null && !resolvedDeclarator.eIsProxy()) { String signature = firstFragment.substring(hashIndex + 1); int indexOfOpenBracket = signature.indexOf("("); int indexOfClosingBracket = signature.indexOf(")"); String simpleNameOfFeature = indexOfOpenBracket != -1 ? signature.substring(0, indexOfOpenBracket) : signature; Iterable<JvmConstructor> constructorCandidates = new ArrayList<JvmConstructor>(); if (resolvedDeclarator.getSimpleName().equals(simpleNameOfFeature)) { constructorCandidates = resolvedDeclarator.getDeclaredConstructors(); } Iterable<JvmFeature> possibleCandidates = Iterables.concat( resolvedDeclarator.findAllFeaturesByName(simpleNameOfFeature), constructorCandidates ); List<String> parameterNames = null; if (indexOfOpenBracket != -1 && indexOfClosingBracket != -1) { parameterNames = Strings.split(signature.substring(indexOfOpenBracket + 1, indexOfClosingBracket), ","); } Iterator<JvmFeature> featureIterator = possibleCandidates.iterator(); while (elementURI == null && featureIterator.hasNext()) { JvmFeature feature = featureIterator.next(); boolean valid = false; if (feature instanceof JvmField) { valid = true; } else if (feature instanceof JvmExecutable) { JvmExecutable executable = (JvmExecutable) feature; EList<JvmFormalParameter> parameters = executable.getParameters(); if (parameterNames == null) { valid = true; } else if (parameters.size() == parameterNames.size()) { valid = true; for (int i = 0; (i < parameterNames.size() && valid); i++) { URI parameterTypeURI = EcoreUtil.getURI(parameters.get(i).getParameterType().getType()); IEObjectDescription expectedParameter = scopeProvider.getScope(context, new HoverReference(TypesPackage.Literals.JVM_TYPE)).getSingleElement( qualifiedNameConverter.toQualifiedName(parameterNames.get(i))); if (expectedParameter == null || !expectedParameter.getEObjectURI().equals(parameterTypeURI)) { valid = false; } } } } if (valid) elementURI = EcoreUtil.getURI(feature); } } } else { IScope scope = scopeProvider.getScope(context, new HoverReference(TypesPackage.Literals.JVM_TYPE)); IEObjectDescription singleElement = scope.getSingleElement(qualifiedNameConverter .toQualifiedName(firstFragment)); if (singleElement != null) elementURI = singleElement.getEObjectURI(); } String label = ""; if (fragments.size() > 1) { for (int i = 1; i < fragments.size(); i++) { String portentialLabel = fragments.get(i).toString(); if (portentialLabel.trim().length() > 0) label += portentialLabel; } } if (label.length() == 0) label = firstFragment; if (elementURI == null) buffer.append(label); else { buffer.append(createLinkWithLabel(XtextElementLinks.XTEXTDOC_SCHEME, elementURI, label)); } }
Example 20
Source File: LinkingService.java From dsl-devkit with Eclipse Public License 1.0 | 3 votes |
/** * Gets an {@link IEObjectDescription} that best matches a given context, reference, and qualified name. * <p> * The concept of a "best match" is "in the eye of the beholder", that is, the context and reference. The default case is the first element returned from the * scope for the given context and reference that matches the given qualified name. * </p> * * @param context * the context of the {@code reference}, must not be {@code null} * @param reference * the reference for which the result element should be suitable, must not be {@code null} * @param qualifiedLinkName * the name that the result element should match, must not be {@code null} * @return an IEObjectDescription that best matches {@code qualifiedLinkName} in {@code scope} given the {@code context} and {@code reference}, * may by {@code null} */ protected IEObjectDescription getSingleElement(final EObject context, final EReference reference, final QualifiedName qualifiedLinkName) { IEObjectDescription desc = null; IScope scope = getScope(context, reference); if (scope instanceof WrappingTypedScope) { desc = ((WrappingTypedScope) scope).getSingleElement(qualifiedLinkName, reference); } else { desc = scope.getSingleElement(qualifiedLinkName); } return desc; }