org.eclipse.xtext.NegatedToken Java Examples

The following examples show how to use org.eclipse.xtext.NegatedToken. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.

Example #1

Source File: TerminalRuleInterpreter.java From xtext-extras with Eclipse Public License 2.0

6 votes

@Override
public Boolean caseNegatedToken(NegatedToken object) {
	boolean result = false;
	OUTER: do {
		if (eof())
			break OUTER;
		IMarker marker = markerFactory.mark();
		if (!doSwitch(object.getTerminal())) {
			result = true;
			input.incOffset();
			continue OUTER;
		}
		marker.rollback();
		break OUTER;
	} while(GrammarUtil.isMultipleCardinality(object));
	return result || GrammarUtil.isOptionalCardinality(object);
}

Example #2

Source File: XtextValidationTest.java From xtext-core with Eclipse Public License 2.0

6 votes

@Test public void testNegatedTokenNotEOF() throws Exception {
	String grammarAsText =
			"grammar test with org.eclipse.xtext.common.Terminals\n" +
			"generate test 'http://test'\n" +
			"A: foo=DUMMY;\n" +
			"terminal DUMMY: !EOF;";
	Grammar grammar = (Grammar) getModel(grammarAsText);
	XtextValidator validator = get(XtextValidator.class);
	ValidatingMessageAcceptor messageAcceptor = new ValidatingMessageAcceptor(null, true, false);
	TerminalRule terminal = (TerminalRule) grammar.getRules().get(1);
	NegatedToken token = (NegatedToken)terminal.getAlternatives();
	messageAcceptor.expectedContext(token.getTerminal());
	configureValidator(validator, messageAcceptor, token);
	validator.checkNegatedTokenNotEOF(token);
	messageAcceptor.validate();
}

Example #3

Source File: XtextValidationTest.java From xtext-core with Eclipse Public License 2.0

6 votes

@Test public void testNegatedTokenNotEOF_2() throws Exception {
	String grammarAsText =
			"grammar test with org.eclipse.xtext.common.Terminals\n" +
					"generate test 'http://test'\n" +
					"A: foo=DUMMY;\n" +
					"terminal DUMMY: !(EOF | ID);";
	Grammar grammar = (Grammar) getModel(grammarAsText);
	XtextValidator validator = get(XtextValidator.class);
	ValidatingMessageAcceptor messageAcceptor = new ValidatingMessageAcceptor(null, true, false);
	TerminalRule terminal = (TerminalRule) grammar.getRules().get(1);
	NegatedToken token = (NegatedToken)terminal.getAlternatives();
	messageAcceptor.expectedContext(((Alternatives)token.getTerminal()).getElements().get(0));
	configureValidator(validator, messageAcceptor, token);
	validator.checkNegatedTokenNotEOF(token);
	messageAcceptor.validate();
}

Example #4

Source File: TerminalRuleToLexerBody.java From xtext-extras with Eclipse Public License 2.0

5 votes

@Override
public String caseNegatedToken(NegatedToken object) {
	result.append("~(");
	doSwitch(object.getTerminal());
	result.append(")").append(Strings.emptyIfNull(object.getCardinality()));
	return "";
}

Example #5

Source File: XtextSemanticSequencer.java From xtext-core with Eclipse Public License 2.0

5 votes

/**
 * Contexts:
 *     AbstractNegatedToken returns NegatedToken
 *     NegatedToken returns NegatedToken
 *
 * Constraint:
 *     terminal=TerminalTokenElement
 */
protected void sequence_NegatedToken(ISerializationContext context, NegatedToken semanticObject) {
	if (errorAcceptor != null) {
		if (transientValues.isValueTransient(semanticObject, XtextPackage.Literals.ABSTRACT_NEGATED_TOKEN__TERMINAL) == ValueTransient.YES)
			errorAcceptor.accept(diagnosticProvider.createFeatureValueMissing(semanticObject, XtextPackage.Literals.ABSTRACT_NEGATED_TOKEN__TERMINAL));
	}
	SequenceFeeder feeder = createSequencerFeeder(context, semanticObject);
	feeder.accept(grammarAccess.getNegatedTokenAccess().getTerminalTerminalTokenElementParserRuleCall_1_0(), semanticObject.getTerminal());
	feeder.finish();
}

Example #6

Source File: TerminalRuleToLexerBody.java From xtext-core with Eclipse Public License 2.0

5 votes

@Override
public String caseNegatedToken(NegatedToken object) {
	result.append("~(");
	doSwitch(object.getTerminal());
	result.append(")").append(Strings.emptyIfNull(object.getCardinality()));
	return "";
}

Example #7

Source File: XtextLabelProvider.java From xtext-eclipse with Eclipse Public License 2.0

4 votes

String text(NegatedToken object) {
	return "!";
}

Example #8

Source File: XtextValidator.java From xtext-core with Eclipse Public License 2.0

4 votes

@Check
public void checkNegatedTokenNotEOF(NegatedToken token) {
	for (EOF eof : EcoreUtil2.getAllContentsOfType(token, EOF.class)) {
		error("It is not possible to negate EOF", eof, null);
	}
}

Example #9

Source File: XtextSemanticSequencer.java From xtext-core with Eclipse Public License 2.0

2 votes

/**
 * Contexts:
 *     TerminalAlternatives returns NegatedToken
 *     TerminalAlternatives.Alternatives_1_0 returns NegatedToken
 *     TerminalGroup returns NegatedToken
 *     TerminalGroup.Group_1_0 returns NegatedToken
 *     TerminalToken returns NegatedToken
 *     TerminalTokenElement returns NegatedToken
 *     ParenthesizedTerminalElement returns NegatedToken
 *
 * Constraint:
 *     (terminal=TerminalTokenElement (cardinality='?' | cardinality='*' | cardinality='+')*)
 */
protected void sequence_NegatedToken_TerminalToken(ISerializationContext context, NegatedToken semanticObject) {
	genericSequencer.createSequence(context, semanticObject);
}