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https://github.com/sigmasternchen/xtext-core
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[bug 437669]: provided support of lazy linking without node model
Change-Id: Ib92604518dc1905ec0806f8739629e1040f213c3 Signed-off-by: akosyakov <anton.kosyakov@itemis.de>
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akosyakov
parent
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2 changed files with 261 additions and 0 deletions
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/*******************************************************************************
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* Copyright (c) 2014 itemis AG (http://www.itemis.eu) and others.
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* All rights reserved. This program and the accompanying materials
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* are made available under the terms of the Eclipse Public License v1.0
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* which accompanies this distribution, and is available at
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* http://www.eclipse.org/legal/epl-v10.html
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*******************************************************************************/
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package org.eclipse.xtext.linking.lazy;
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import static java.util.Collections.*;
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import org.eclipse.emf.ecore.EObject;
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import org.eclipse.emf.ecore.EReference;
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import org.eclipse.xtext.XtextFactory;
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import org.eclipse.xtext.nodemodel.BidiTreeIterable;
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import org.eclipse.xtext.nodemodel.BidiTreeIterator;
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import org.eclipse.xtext.nodemodel.ICompositeNode;
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import org.eclipse.xtext.nodemodel.ILeafNode;
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import org.eclipse.xtext.nodemodel.INode;
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import org.eclipse.xtext.nodemodel.SyntaxErrorMessage;
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import org.eclipse.xtext.nodemodel.util.NodeTreeIterator;
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import org.eclipse.xtext.nodemodel.util.ReversedBidiTreeIterable;
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import org.eclipse.xtext.util.ITextRegion;
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import org.eclipse.xtext.util.ITextRegionWithLineInformation;
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import org.eclipse.xtext.util.TextRegion;
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import org.eclipse.xtext.util.TextRegionWithLineInformation;
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import com.google.inject.Inject;
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/**
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* Provides services to install proxies without node model.
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*
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* @author Anton Kosyakov - Initial contribution and API
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* @since 2.7
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*/
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public class SyntheticLinkingSupport {
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@Inject
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private LazyLinker lazyLinker;
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public void createAndSetProxy(EObject obj, EReference eRef, String crossRefString) {
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lazyLinker.createAndSetProxy(obj, new SyntheticLinkingLeafNode(obj, crossRefString), eRef);
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}
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}
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class SyntheticLinkingLeafNode implements ILeafNode, BidiTreeIterable<INode> {
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private final static int OFFSET = 0;
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private final static int LENGTH = 1;
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private final static int LINE = -1;
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private final String text;
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private final EObject grammarElement;
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private final EObject semanticElement;
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public SyntheticLinkingLeafNode(EObject semanticElement, String text) {
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this.text = text;
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this.semanticElement = semanticElement;
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this.grammarElement = XtextFactory.eINSTANCE.createKeyword();
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}
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public ICompositeNode getParent() {
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return null;
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}
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public boolean hasSiblings() {
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return false;
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}
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public boolean hasPreviousSibling() {
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return false;
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}
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public boolean hasNextSibling() {
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return false;
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}
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public INode getPreviousSibling() {
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return null;
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}
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public INode getNextSibling() {
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return null;
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}
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public ICompositeNode getRootNode() {
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return null;
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}
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public Iterable<ILeafNode> getLeafNodes() {
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return emptyList();
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}
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public int getTotalOffset() {
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return OFFSET;
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}
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public int getOffset() {
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return OFFSET;
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}
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public int getTotalLength() {
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return LENGTH;
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}
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public int getLength() {
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return LENGTH;
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}
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public int getTotalEndOffset() {
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return LENGTH;
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}
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public int getEndOffset() {
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return LENGTH;
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}
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public int getTotalStartLine() {
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return LINE;
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}
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public int getStartLine() {
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return LINE;
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}
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public int getTotalEndLine() {
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return LINE;
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}
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public int getEndLine() {
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return LINE;
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}
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public String getText() {
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return text;
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}
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public EObject getGrammarElement() {
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return grammarElement;
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}
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public EObject getSemanticElement() {
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return semanticElement;
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}
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public boolean hasDirectSemanticElement() {
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return true;
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}
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public SyntaxErrorMessage getSyntaxErrorMessage() {
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return null;
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}
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public BidiTreeIterable<INode> getAsTreeIterable() {
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return this;
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}
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public BidiTreeIterator<INode> iterator() {
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return new NodeTreeIterator(this);
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}
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public BidiTreeIterable<INode> reverse() {
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return new ReversedBidiTreeIterable<INode>(this);
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}
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public ITextRegion getTextRegion() {
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return new TextRegion(OFFSET, LENGTH);
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}
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public ITextRegion getTotalTextRegion() {
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return new TextRegion(OFFSET, LENGTH);
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}
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public ITextRegionWithLineInformation getTextRegionWithLineInformation() {
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return new TextRegionWithLineInformation(OFFSET, LENGTH, LINE, LINE);
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}
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public ITextRegionWithLineInformation getTotalTextRegionWithLineInformation() {
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return new TextRegionWithLineInformation(OFFSET, LENGTH, LINE, LINE);
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}
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public boolean isHidden() {
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return false;
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}
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}
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@ -0,0 +1,74 @@
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/*******************************************************************************
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* Copyright (c) 2014 itemis AG (http://www.itemis.eu) and others.
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* All rights reserved. This program and the accompanying materials
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* are made available under the terms of the Eclipse Public License v1.0
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* which accompanies this distribution, and is available at
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* http://www.eclipse.org/legal/epl-v10.html
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*******************************************************************************/
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package org.eclipse.xtext.linking;
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import org.eclipse.emf.common.util.URI;
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import org.eclipse.emf.ecore.resource.Resource;
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import org.eclipse.emf.ecore.util.EcoreUtil;
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import org.eclipse.xtext.diagnostics.Diagnostic;
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import org.eclipse.xtext.junit4.AbstractXtextTests;
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import org.eclipse.xtext.linking.importedURI.ImportedURIPackage;
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import org.eclipse.xtext.linking.importedURI.Main;
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import org.eclipse.xtext.linking.importedURI.Type;
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import org.eclipse.xtext.linking.lazy.SyntheticLinkingSupport;
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import org.eclipse.xtext.resource.XtextResourceSet;
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import org.junit.Test;
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/**
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* @author kosyakov - Initial contribution and API
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*/
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public class Bug437669Test extends AbstractXtextTests {
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@Override
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public void setUp() throws Exception {
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super.setUp();
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with(ImportUriTestLanguageStandaloneSetup.class);
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}
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@Test
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public void testResolved() {
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Type type = resolve("Foo");
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Resource resource = type.eResource();
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assertTrue(resource.getErrors().toString(), resource.getErrors().isEmpty());
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Type resolvedType = type.getExtends();
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assertNotNull(resolvedType);
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assertFalse(resolvedType.eIsProxy());
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assertEquals("Foo", resolvedType.getName());
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}
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@Test
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public void testUnresolved() {
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Type type = resolve("BlaBlaBla");
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Resource resource = type.eResource();
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assertEquals(resource.getErrors().toString(), 1, resource.getErrors().size());
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Diagnostic diagnostic = (Diagnostic) resource.getErrors().get(0);
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assertEquals(-1, diagnostic.getLine());
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assertEquals(0, diagnostic.getOffset());
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assertEquals(1, diagnostic.getLength());
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assertEquals("Couldn't resolve reference to Type 'BlaBlaBla'.", diagnostic.getMessage());
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}
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private Type resolve(String text) {
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XtextResourceSet resourceSet = get(XtextResourceSet.class);
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resourceSet.setClasspathURIContext(getClass().getClassLoader());
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URI uri = URI.createURI("classpath:/org/eclipse/xtext/linking/02.importuritestlanguage");
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Resource resource = resourceSet.getResource(uri, true);
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Main main = (Main) resource.getContents().get(0);
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Type type = main.getTypes().get(0);
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SyntheticLinkingSupport syntheticLinkingSupport = get(SyntheticLinkingSupport.class);
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syntheticLinkingSupport.createAndSetProxy(type, ImportedURIPackage.Literals.TYPE__EXTENDS, text);
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EcoreUtil.resolveAll(resourceSet);
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return type;
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}
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}
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