@Override
public Void visitImportDirective(DartImportDirective node) {
DartLibrary library = compilationUnit.getLibrary();
try {
if (Objects.equal(compilationUnit, library.getDefiningCompilationUnit())) {
DartImport[] imports = library.getImports();
for (DartImport imprt : imports) {
// on URI of library - return defining Unit of imported Library
SourceRange uriRange = imprt.getUriRange();
if (SourceRangeUtils.contains(uriRange, startOffset)) {
resolvedElement = null;
foundElement = imprt.getLibrary().getDefiningCompilationUnit();
wordRegion = new Region(uriRange.getOffset(), uriRange.getLength());
candidateRegion = new Region(0, 0);
throw new DartElementFoundException();
}
// on #import directive - return DartImport element
SourceRange sourceRange = imprt.getSourceRange();
if (SourceRangeUtils.contains(sourceRange, startOffset)) {
resolvedElement = null;
foundElement = imprt;
wordRegion = new Region(sourceRange.getOffset(), sourceRange.getLength());
candidateRegion = new Region(sourceRange.getOffset(), sourceRange.getLength());
throw new DartElementFoundException();
}
}
}
} catch (DartModelException e) {
DartCore.logError("Cannot access imports of " + library.getElementName(), e);
}
return super.visitImportDirective(node);
}
@Override
public Void visitIdentifier(DartIdentifier node) {
if (foundElement == null) {
int start = node.getSourceInfo().getOffset();
int length = node.getSourceInfo().getLength();
int end = start + length;
if (start <= startOffset && endOffset <= end) {
wordRegion = new Region(start, length);
Element targetElement = DartAstUtilities.getElement(node, includeDeclarations);
if (targetElement == null) {
foundElement = null;
} else {
if (targetElement instanceof VariableElement) {
VariableElement variableElement = (VariableElement) targetElement;
resolvedElement = variableElement;
if (variableElement.getKind() == ElementKind.PARAMETER
|| variableElement.getKind() == ElementKind.VARIABLE) {
foundElement =
BindingUtils.getDartElement(compilationUnit.getLibrary(), variableElement);
candidateRegion =
new Region(
variableElement.getNameLocation().getOffset(),
variableElement.getNameLocation().getLength());
} else {
foundElement = null;
}
} else {
findElementFor(targetElement);
// Import prefix is resolved into LibraryElement, so it is correct that corresponding
// DartElement is DartLibrary, but this is not what we (and user) wants, because
// it looses information. We want DartImport, it gives both DartLibrary and name.
if (foundElement instanceof DartLibrary) {
try {
DartImport[] imports = compilationUnit.getLibrary().getImports();
for (DartImport imprt : imports) {
if (Objects.equal(imprt.getLibrary(), foundElement)
&& Objects.equal(imprt.getPrefix(), node.getName())) {
foundElement = imprt;
SourceRange range = imprt.getNameRange();
candidateRegion = new Region(range.getOffset(), range.getLength());
}
}
} catch (DartModelException e) {
DartCore.logError("Cannot resolve import " + foundElement.getElementName(), e);
}
}
}
}
throw new DartElementFoundException();
}
}
return null;
}