protected Collection<org.emftext.language.xpath3.resource.xpath3.ui.Xpath3CompletionProposal>
handleEnumAttribute(
org.emftext.language.xpath3.resource.xpath3.mopp.Xpath3ExpectedTerminal expectedTerminal,
org.emftext.language.xpath3.resource.xpath3.mopp.Xpath3ExpectedStructuralFeature
expectedFeature,
EEnum enumType,
String prefix,
EObject container) {
Collection<EEnumLiteral> enumLiterals = enumType.getELiterals();
Collection<org.emftext.language.xpath3.resource.xpath3.ui.Xpath3CompletionProposal> result =
new LinkedHashSet<
org.emftext.language.xpath3.resource.xpath3.ui.Xpath3CompletionProposal>();
for (EEnumLiteral literal : enumLiterals) {
String unResolvedLiteral = literal.getLiteral();
// use token resolver to get de-resolved value of the literal
org.emftext.language.xpath3.resource.xpath3.IXpath3TokenResolverFactory tokenResolverFactory =
metaInformation.getTokenResolverFactory();
org.emftext.language.xpath3.resource.xpath3.IXpath3TokenResolver tokenResolver =
tokenResolverFactory.createTokenResolver(expectedFeature.getTokenName());
String resolvedLiteral =
tokenResolver.deResolve(unResolvedLiteral, expectedFeature.getFeature(), container);
boolean matchesPrefix = matches(resolvedLiteral, prefix);
result.add(
new org.emftext.language.xpath3.resource.xpath3.ui.Xpath3CompletionProposal(
expectedTerminal,
resolvedLiteral,
prefix,
matchesPrefix,
expectedFeature.getFeature(),
container));
}
return result;
}
protected Collection<org.emftext.language.xpath3.resource.xpath3.ui.Xpath3CompletionProposal>
handleAttribute(
org.emftext.language.xpath3.resource.xpath3.mopp.Xpath3ExpectedTerminal expectedTerminal,
org.emftext.language.xpath3.resource.xpath3.mopp.Xpath3ExpectedStructuralFeature
expectedFeature,
EObject container,
EAttribute attribute,
String prefix) {
Collection<org.emftext.language.xpath3.resource.xpath3.ui.Xpath3CompletionProposal> resultSet =
new LinkedHashSet<
org.emftext.language.xpath3.resource.xpath3.ui.Xpath3CompletionProposal>();
Object[] defaultValues = attributeValueProvider.getDefaultValues(attribute);
if (defaultValues != null) {
for (Object defaultValue : defaultValues) {
if (defaultValue != null) {
org.emftext.language.xpath3.resource.xpath3.IXpath3TokenResolverFactory
tokenResolverFactory = metaInformation.getTokenResolverFactory();
String tokenName = expectedFeature.getTokenName();
if (tokenName != null) {
org.emftext.language.xpath3.resource.xpath3.IXpath3TokenResolver tokenResolver =
tokenResolverFactory.createTokenResolver(tokenName);
if (tokenResolver != null) {
String defaultValueAsString =
tokenResolver.deResolve(defaultValue, attribute, container);
boolean matchesPrefix = matches(defaultValueAsString, prefix);
resultSet.add(
new org.emftext.language.xpath3.resource.xpath3.ui.Xpath3CompletionProposal(
expectedTerminal,
defaultValueAsString,
prefix,
matchesPrefix,
expectedFeature.getFeature(),
container));
}
}
}
}
}
return resultSet;
}
protected Collection<org.emftext.language.xpath3.resource.xpath3.ui.Xpath3CompletionProposal>
deriveProposals(
final org.emftext.language.xpath3.resource.xpath3.mopp.Xpath3ExpectedTerminal
expectedTerminal,
String content,
org.emftext.language.xpath3.resource.xpath3.IXpath3TextResource resource,
int cursorOffset) {
org.emftext.language.xpath3.resource.xpath3.IXpath3ExpectedElement expectedElement =
(org.emftext.language.xpath3.resource.xpath3.IXpath3ExpectedElement)
expectedTerminal.getTerminal();
if (expectedElement
instanceof org.emftext.language.xpath3.resource.xpath3.mopp.Xpath3ExpectedCsString) {
org.emftext.language.xpath3.resource.xpath3.mopp.Xpath3ExpectedCsString csString =
(org.emftext.language.xpath3.resource.xpath3.mopp.Xpath3ExpectedCsString) expectedElement;
return handleKeyword(
expectedTerminal,
csString,
expectedTerminal.getPrefix(),
expectedTerminal.getContainer());
} else if (expectedElement
instanceof org.emftext.language.xpath3.resource.xpath3.mopp.Xpath3ExpectedBooleanTerminal) {
org.emftext.language.xpath3.resource.xpath3.mopp.Xpath3ExpectedBooleanTerminal
expectedBooleanTerminal =
(org.emftext.language.xpath3.resource.xpath3.mopp.Xpath3ExpectedBooleanTerminal)
expectedElement;
return handleBooleanTerminal(
expectedTerminal, expectedBooleanTerminal, expectedTerminal.getPrefix());
} else if (expectedElement
instanceof
org.emftext.language.xpath3.resource.xpath3.mopp.Xpath3ExpectedEnumerationTerminal) {
org.emftext.language.xpath3.resource.xpath3.mopp.Xpath3ExpectedEnumerationTerminal
expectedEnumerationTerminal =
(org.emftext.language.xpath3.resource.xpath3.mopp.Xpath3ExpectedEnumerationTerminal)
expectedElement;
return handleEnumerationTerminal(
expectedTerminal, expectedEnumerationTerminal, expectedTerminal.getPrefix());
} else if (expectedElement
instanceof
org.emftext.language.xpath3.resource.xpath3.mopp.Xpath3ExpectedStructuralFeature) {
final org.emftext.language.xpath3.resource.xpath3.mopp.Xpath3ExpectedStructuralFeature
expectedFeature =
(org.emftext.language.xpath3.resource.xpath3.mopp.Xpath3ExpectedStructuralFeature)
expectedElement;
final EStructuralFeature feature = expectedFeature.getFeature();
final EClassifier featureType = feature.getEType();
final EObject container = findCorrectContainer(expectedTerminal);
// Here it gets really crazy. We need to modify the model in a way that reflects
// the state the model would be in, if the expected terminal were present. After
// computing the corresponding completion proposals, the original state of the
// model is restored. This procedure is required, because different models can be
// required for different completion situations. This can be particularly observed
// when the user has not yet typed a character that starts an element to be
// completed.
final Collection<org.emftext.language.xpath3.resource.xpath3.ui.Xpath3CompletionProposal>
proposals =
new ArrayList<
org.emftext.language.xpath3.resource.xpath3.ui.Xpath3CompletionProposal>();
expectedTerminal.materialize(
new Runnable() {
public void run() {
if (feature instanceof EReference) {
EReference reference = (EReference) feature;
if (featureType instanceof EClass) {
if (reference.isContainment()) {
// the FOLLOW set should contain only non-containment references
assert false;
} else {
proposals.addAll(
handleNCReference(
expectedTerminal,
container,
reference,
expectedTerminal.getPrefix(),
expectedFeature.getTokenName()));
}
}
} else if (feature instanceof EAttribute) {
EAttribute attribute = (EAttribute) feature;
if (featureType instanceof EEnum) {
EEnum enumType = (EEnum) featureType;
proposals.addAll(
handleEnumAttribute(
expectedTerminal,
expectedFeature,
enumType,
expectedTerminal.getPrefix(),
container));
} else {
// handle EAttributes (derive default value depending on the type of the
// attribute, figure out token resolver, and call deResolve())
proposals.addAll(
handleAttribute(
expectedTerminal,
expectedFeature,
container,
attribute,
expectedTerminal.getPrefix()));
}
} else {
// there should be no other subclass of EStructuralFeature
assert false;
}
}
});
// Return the proposals that were computed in the closure call.
return proposals;
} else {
// there should be no other class implementing IExpectedElement
assert false;
}
return Collections.emptyList();
}
