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[xtend] Fixed partial parsing (another attempt)

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see https://bugs.eclipse.org/bugs/show_bug.cgi?id=457003

Change-Id: I056be2fa67821bbc0ad7e1a3cb0acce0da77c6d7
This commit is contained in:
Sebastian Zarnekow 2015-01-08 15:02:23 +01:00
parent 48a59c2d44
commit f5b0d4ba03
1 changed files with 16 additions and 12 deletions
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28
plugins/org.eclipse.xtext.junit4/src/org/eclipse/xtext/junit4/smoketest/processors/PartialParsingProcessor.java
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@ -30,28 +30,33 @@ import com.google.inject.Inject;
*/
public class PartialParsingProcessor extends DeltaScenarioProcessor {
private static final String DELIM = "\n----------------------\n";
@Inject private IParser parser;
@Override
public String processFile(String completeData, String data, int offset, int len, String change) throws Exception {
IParseResult initialParseResult = parser.parse(new StringReader(data));
IParseResult reparsed = parser.reparse(initialParseResult, new ReplaceRegion(offset, len, change));
String newData = applyDelta(data, offset, len, change);
IParseResult parsedFromScratch = parser.parse(new StringReader(newData));
assertEqual(data, newData, parsedFromScratch, reparsed);
return newData;
ReplaceRegion replaceRegion = new ReplaceRegion(offset, len, change);
try {
IParseResult reparsed = parser.reparse(initialParseResult, replaceRegion);
IParseResult parsedFromScratch = parser.parse(new StringReader(newData));
assertEqual(data, newData, parsedFromScratch, reparsed);
return newData;
} catch(Throwable e) {
ComparisonFailure throwMe = new ComparisonFailure(e.getMessage(), newData, replaceRegion + DELIM + data);
throwMe.initCause(e);
throw throwMe;
}
}
private void assertEqual(String data, String newData, IParseResult parsedFromScratch, IParseResult reparsed) {
EObject rootFromScratch = parsedFromScratch.getRootASTElement();
EObject rootReparsed = reparsed.getRootASTElement();
assertEqual(data, newData, EmfFormatter.objToStr(rootFromScratch), EmfFormatter.objToStr(rootReparsed));
try {
assertEqual(data, newData, parsedFromScratch.getRootNode(), reparsed.getRootNode());
} catch (AssertionError e) {
throw new ComparisonFailure(e.getMessage(), newData, data);
}
assertEqual(data, newData, parsedFromScratch.getRootNode(), reparsed.getRootNode());
}
private void assertEqual(String data, String newData, ICompositeNode fromScratch, ICompositeNode reparsed) {
@ -81,8 +86,7 @@ public class PartialParsingProcessor extends DeltaScenarioProcessor {
private void assertEqual(String data, String newData, String parsedFromScratch, String reparsed) {
if (!parsedFromScratch.equals(reparsed)) {
String delim = "\n----------------------\n";
throw new ComparisonFailure("Parsed EObjects are not equal", newData + delim + parsedFromScratch, data + delim + reparsed);
throw new ComparisonFailure("Parsed EObjects are not equal", newData + DELIM + parsedFromScratch, data + DELIM + reparsed);
}
}