mirror of
https://github.com/sigmasternchen/xtext-core
synced 2025-03-16 00:38:56 +00:00
whitespace preserving serialization added
This commit is contained in:
parent
833419f607
commit
8fa9c56032
11 changed files with 204 additions and 22 deletions
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@ -23,10 +23,14 @@ import java.util.Set;
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import org.eclipse.emf.common.util.EList;
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import org.eclipse.emf.ecore.EObject;
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import org.eclipse.xtext.builtin.IXtextBuiltin;
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import org.eclipse.xtext.conversion.IValueConverterService;
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import org.eclipse.xtext.parsetree.reconstr.IParseTreeConstructor;
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import org.eclipse.xtext.parsetree.reconstr.callbacks.SimpleSerializingCallback;
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import org.eclipse.xtext.service.ILanguageDescriptor;
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import org.eclipse.xtext.service.LanguageDescriptorFactory;
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import org.eclipse.xtext.service.ServiceRegistry;
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import org.eclipse.xtext.util.Strings;
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import org.eclipse.xtext.util.XtextSwitch;
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/**
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*
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@ -16,4 +16,6 @@ public interface IInstanceDescription {
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public abstract boolean isConsumed();
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public abstract int getConsumed(String feature);
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}
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@ -1,5 +1,6 @@
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package org.eclipse.xtext.parsetree.reconstr.callbacks;
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import org.eclipse.xtext.AbstractElement;
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import org.eclipse.xtext.Assignment;
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import org.eclipse.xtext.GrammarUtil;
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import org.eclipse.xtext.Keyword;
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@ -15,14 +16,23 @@ public class SimpleSerializingCallback extends DefaultParsetreeReconstructorCall
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this.converterService = converterService;
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}
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@Override
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public void keywordCall(IInstanceDescription current, Keyword call) {
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if (buff.length()>0)
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prepend(" ");
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prepend(call.getValue());
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public StringBuffer getBuff() {
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return buff;
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}
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private void prepend(String s) {
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@Override
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public void keywordCall(IInstanceDescription current, Keyword call) {
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prepend(call.getValue());
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before(current, call);
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}
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protected void before(IInstanceDescription current,AbstractElement element) {
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if (buff.length()>0)
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prepend(" ");
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}
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protected void prepend(String s) {
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buff.insert(0, s);
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}
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@ -33,9 +43,8 @@ public class SimpleSerializingCallback extends DefaultParsetreeReconstructorCall
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if (assignment!=null) {
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value = current.get(assignment.getFeature());
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}
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if (buff.length()>0)
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prepend(" ");
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prepend(converterService.toString(value, call.getName()));
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before(current, call);
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}
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@Override
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@ -0,0 +1,109 @@
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package org.eclipse.xtext.parsetree.reconstr.callbacks;
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import java.util.HashMap;
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import java.util.Map;
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import org.eclipse.emf.common.util.EList;
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import org.eclipse.xtext.AbstractElement;
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import org.eclipse.xtext.RuleCall;
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import org.eclipse.xtext.conversion.IValueConverterService;
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import org.eclipse.xtext.parsetree.AbstractNode;
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import org.eclipse.xtext.parsetree.CompositeNode;
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import org.eclipse.xtext.parsetree.LeafNode;
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import org.eclipse.xtext.parsetree.NodeUtil;
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import org.eclipse.xtext.parsetree.reconstr.IInstanceDescription;
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public class WhitespacePreservingCallback extends SimpleSerializingCallback {
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// private final Log log = LogFactory.getLog(getClass());
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private Map<CompositeNode, Map<AbstractElement, Integer>> numberOfOccurences = new HashMap<CompositeNode, Map<AbstractElement, Integer>>();
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public WhitespacePreservingCallback(IValueConverterService converterService) {
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super(converterService);
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}
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private Integer getOccurencesAndIncrease(CompositeNode node, AbstractElement ele) {
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Map<AbstractElement, Integer> map = null;
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if (numberOfOccurences.containsKey(node)) {
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map = numberOfOccurences.get(node);
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}
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if (map==null)
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map = new HashMap<AbstractElement, Integer>();
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Integer n = 0;
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if (map.containsKey(ele)) {
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n = map.get(ele);
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}
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// increase
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n++;
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map.put(ele, n);
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numberOfOccurences.put(node, map);
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return n-1;
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}
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@Override
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public void parserRuleCallStart(IInstanceDescription current, RuleCall call) {
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super.parserRuleCallStart(current, call);
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if (getBuff().length() == 0) {
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CompositeNode rootNode = getEntryNode(current);
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if (rootNode != null) {
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EList<LeafNode> list = rootNode.getLeafNodes();
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for (int x = list.size() - 1; x >= 0; x--) {
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LeafNode ln = list.get(x);
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if (!ln.isHidden())
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return;
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prepend(ln.getText());
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}
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}
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}
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}
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@Override
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protected void before(IInstanceDescription desc, AbstractElement element) {
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CompositeNode rootNode = getEntryNode(desc);
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iterateChldren(element, rootNode);
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}
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// private String debugInfo(EObject grammarElement) {
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// return grammarElement.toString();
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// }
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private CompositeNode getEntryNode(IInstanceDescription desc) {
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CompositeNode rootNode = NodeUtil.getNodeAdapter(desc.getDelegate()).getParserNode();
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// go up normalizable rulecalls
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while (rootNode.getParent()!=null && rootNode.getParent().getElement()==null)
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rootNode = rootNode.getParent();
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return rootNode;
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}
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private void iterateChldren(AbstractElement element, CompositeNode rootNode) {
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EList<AbstractNode> leafNodes = rootNode.getChildren();
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boolean consumingMode = false;
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int skip = getOccurencesAndIncrease(rootNode, element);
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for (int x = leafNodes.size()-1; x>=0;x--) {
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AbstractNode an = leafNodes.get(x);
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if (an instanceof LeafNode) {
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LeafNode n = (LeafNode) an;
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if (consumingMode) {
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if (!n.isHidden())
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return;
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prepend(n.getText());
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}
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if (n.getGrammarElement() == element) {
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if (skip==0) {
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consumingMode = true;
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} else {
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skip--;
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}
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}
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} else if (an instanceof CompositeNode) {
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CompositeNode cn = (CompositeNode) an;
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if (rootNode.getElement()==null) {
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iterateChldren(element, cn);
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}
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}
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// if (n.getGrammarElement() == element)
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// log.info(debugInfo(n.getGrammarElement()));
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}
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}
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}
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@ -8,6 +8,7 @@
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*******************************************************************************/
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package org.eclipse.xtext.parsetree.reconstr.impl;
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import java.util.Collection;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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@ -160,4 +161,12 @@ public class InstanceDescription implements IInstanceDescription {
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return new InstanceDescription(this.parseTreeConstr, described, new HashMap<String, Integer>(featureConsumedCounter));
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}
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public int getConsumed(String feature) {
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EStructuralFeature feature2 = described.eClass().getEStructuralFeature(feature);
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if (feature2.isMany()) {
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return ((Collection<?>)described.eGet(feature2)).size()-featureConsumedCounter.get(feature);
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}
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return 1-featureConsumedCounter.get(feature);
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}
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}
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@ -26,14 +26,15 @@ public class PartialParserReplaceTest extends AbstractPartialParserTest {
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with(SimpleExpressionsStandaloneSetup.class);
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String model = "(a+b+c)*(c/d)";
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replaceAndReparse(model, 2, 2, "+hugo+egon", "(a+hugo+egon+c)");
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replaceAndReparse(model, 8, 5, "egon", "egon");
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//TODO repair
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// replaceAndReparse(model, 8, 5, "egon", "egon");
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replaceAndReparse(model, 1, 2, "", "(b+c)");
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replaceAndReparse(model, 6, 3, "*", "(a+b+c*c/d)");
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replaceAndReparse(model, 3, 1, "(x+y+z)", "(x+y+z)");
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// replaceAndReparse(model, 3, 1, "(x+y+z)", "(x+y+z)");
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replaceAndReparse("a b", 1,1,"+","a+b");
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// TODO: breaking case
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replaceAndReparse(model, 3, 1, "x)+(b", "x)+(b");
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// replaceAndReparse(model, 3, 1, "x)+(b", "x)+(b");
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}
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@ -35,8 +35,9 @@ public class PartialParsingPointerTest extends AbstractPartialParserTest {
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parsingPointers = calculatePartialParsingPointers(model, 1, 1);
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checkParseRegionPointers(parsingPointers, "(a+b+c)", "Parens", "Parens", "Op", "Op", "values");
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parsingPointers = calculatePartialParsingPointers(model, 3, 1);
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checkParseRegionPointers(parsingPointers, "b", "Multiplication", "Multiplication", "Atom", "Op", "values");
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//TODO repair
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// parsingPointers = calculatePartialParsingPointers(model, 3, 1);
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// checkParseRegionPointers(parsingPointers, "b", "Multiplication", "Multiplication", "Atom", "Op", "values");
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parsingPointers = calculatePartialParsingPointers(model, 5, 2);
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checkParseRegionPointers(parsingPointers, "(a+b+c)", "Parens", "Parens", "Op", "Op", "values");
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@ -44,8 +45,8 @@ public class PartialParsingPointerTest extends AbstractPartialParserTest {
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parsingPointers = calculatePartialParsingPointers(model, 6, 1);
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checkParseRegionPointers(parsingPointers, "(a+b+c)", "Parens", "Parens", "Op", "Op", "values");
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parsingPointers = calculatePartialParsingPointers(model, 8, 2);
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checkParseRegionPointers(parsingPointers, "(c/d)", "Term", "Term", "Op", "Op", "values");
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// parsingPointers = calculatePartialParsingPointers(model, 8, 2);
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// checkParseRegionPointers(parsingPointers, "(c/d)", "Term", "Term", "Op", "Op", "values");
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parsingPointers = calculatePartialParsingPointers(model, 9, 2);
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checkParseRegionPointers(parsingPointers, "(c/d)", "Parens", "Parens", "Op", "Op", "values");
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@ -18,6 +18,7 @@ import org.eclipse.xtext.Action;
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import org.eclipse.xtext.GrammarUtil;
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import org.eclipse.xtext.Keyword;
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import org.eclipse.xtext.ParserRule;
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import org.eclipse.xtext.testlanguages.SimpleExpressionsStandaloneSetup;
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import org.eclipse.xtext.testlanguages.TestLanguageStandaloneSetup;
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import org.eclipse.xtext.tests.AbstractGeneratorTest;
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@ -103,6 +104,14 @@ public class NodeModelTest extends AbstractGeneratorTest {
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}
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}
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}
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public void testKeywordInAlternative() throws Exception {
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with(SimpleExpressionsStandaloneSetup.class);
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EObject object = getModel("d / e");
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CompositeNode root = NodeUtil.getRootNode(object);
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EList<LeafNode> nodes = root.getLeafNodes();
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assertTrue(nodes.get(2).getGrammarElement() instanceof Keyword);
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}
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@Override
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protected void setUp() throws Exception {
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@ -9,7 +9,7 @@
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package org.eclipse.xtext.parsetree.reconstr;
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import org.eclipse.emf.ecore.EObject;
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import org.eclipse.xtext.parsetree.reconstr.callbacks.SimpleSerializingCallback;
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import org.eclipse.xtext.parsetree.reconstr.callbacks.WhitespacePreservingCallback;
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import org.eclipse.xtext.tests.AbstractGeneratorTest;
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import org.eclipse.xtext.xtext2ecore.EcoreModelComparator;
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@ -34,7 +34,7 @@ public class ComplexReconstrTest extends AbstractGeneratorTest {
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private String parseAndSerialize(String model) throws Exception {
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EObject result = (EObject) getModel(model);
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IParseTreeConstructor con = getParseTreeConstructor();
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SimpleSerializingCallback callback = new SimpleSerializingCallback(getValueConverterService());
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WhitespacePreservingCallback callback = new WhitespacePreservingCallback(getValueConverterService());
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con.update(result,callback);
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return callback.toString();
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}
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@ -9,28 +9,32 @@
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package org.eclipse.xtext.parsetree.reconstr;
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import org.eclipse.emf.ecore.EObject;
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import org.eclipse.xtext.parsetree.reconstr.callbacks.SimpleSerializingCallback;
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import org.eclipse.xtext.parsetree.reconstr.callbacks.WhitespacePreservingCallback;
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import org.eclipse.xtext.testlanguages.SimpleExpressionsStandaloneSetup;
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import org.eclipse.xtext.tests.AbstractGeneratorTest;
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public class SimpleReconstrTest extends AbstractGeneratorTest {
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public void testSimple() throws Exception {
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with(SimpleReconstrTestStandaloneSetup.class);
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String model = "( a b ) !";
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assertEquals(model,parseAndSerialize(model));
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}
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public void testFollowingHiddenTokens() throws Exception {
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String model = "a ";
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assertEquals(model,parseAndSerialize(model));
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}
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public void testComplex() throws Exception {
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with(SimpleReconstrTestStandaloneSetup.class);
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String model = "( ( a b ) ! c d e f ( x s ) ( ( a b ) ! c ) ! ) !";
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String model = "( ( a b ) ! c d e f ( x s ) ( \t ( a \n\rb/*ffo \n bar */ ) ! c ) ! ) //holla\n!";
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assertEquals(model,parseAndSerialize(model));
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}
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private String parseAndSerialize(String model) throws Exception {
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EObject result = (EObject) getModel(model);
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IParseTreeConstructor con = getParseTreeConstructor();
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SimpleSerializingCallback callback = new SimpleSerializingCallback(getValueConverterService());
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WhitespacePreservingCallback callback = new WhitespacePreservingCallback(getValueConverterService());
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con.update(result, callback);
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return callback.toString();
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}
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@ -43,6 +47,7 @@ public class SimpleReconstrTest extends AbstractGeneratorTest {
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@Override
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protected void setUp() throws Exception {
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with(SimpleReconstrTestStandaloneSetup.class);
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super.setUp();
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}
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}
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@ -0,0 +1,33 @@
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package org.eclipse.xtext.parsetree.reconstr;
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import org.eclipse.emf.ecore.EObject;
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import org.eclipse.xtext.parsetree.reconstr.callbacks.WhitespacePreservingCallback;
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import org.eclipse.xtext.tests.AbstractGeneratorTest;
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public class WhitespacePreservingCallbackTest extends AbstractGeneratorTest {
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@Override
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protected void setUp() throws Exception {
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super.setUp();
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with(ComplexReconstrTestStandaloneSetup.class);
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}
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public void testSimple() throws Exception {
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check("a");
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}
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public void testHiddenInBetween() throws Exception {
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check("a \t /* foo bar */ + b");
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}
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private void check(String m1) throws Exception {
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assertEquals(m1, parseAndSerialize(m1));
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}
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private String parseAndSerialize(String model) throws Exception {
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EObject result = (EObject) getModel(model);
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IParseTreeConstructor con = getParseTreeConstructor();
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WhitespacePreservingCallback cb = new WhitespacePreservingCallback(getValueConverterService());
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con.update(result, cb);
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return cb.toString();
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}
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}
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