public OffsetRange getReferenceSpan(Document doc, int lexOffset) {
TokenHierarchy<Document> th = TokenHierarchy.get(doc);
// BaseDocument doc = (BaseDocument)document;
TokenSequence<? extends PythonTokenId> ts = PythonLexerUtils.getPythonSequence(th, lexOffset);
if (ts == null) {
return OffsetRange.NONE;
}
ts.move(lexOffset);
if (!ts.moveNext() && !ts.movePrevious()) {
return OffsetRange.NONE;
}
// Determine whether the caret position is right between two tokens
boolean isBetween = (lexOffset == ts.offset());
OffsetRange range = getReferenceSpan(ts, th, lexOffset);
if ((range == OffsetRange.NONE) && isBetween) {
// The caret is between two tokens, and the token on the right
// wasn't linkable. Try on the left instead.
if (ts.movePrevious()) {
range = getReferenceSpan(ts, th, lexOffset);
}
}
return range;
}
@SuppressWarnings("empty-statement")
private DeclarationLocation findUrl(PythonParserResult info, Document doc, int lexOffset) {
TokenSequence<?> ts = PythonLexerUtils.getPythonSequence((BaseDocument) doc, lexOffset);
if (ts == null) {
return DeclarationLocation.NONE;
}
ts.move(lexOffset);
if (!ts.moveNext() && !ts.movePrevious()) {
return DeclarationLocation.NONE;
}
Token<?> token = ts.token();
TokenSequence<?> embedded = ts.embedded();
if (embedded != null) {
ts = embedded;
embedded.move(lexOffset);
if (!embedded.moveNext() && !embedded.movePrevious()) {
return DeclarationLocation.NONE;
}
token = embedded.token();
}
// Is this a comment? If so, possibly do rdoc-method reference jump
if ((token != null) && (token.id() == PythonStringTokenId.URL)) {
// TODO - use findLinkedMethod
String method = token.text().toString();
if (method.startsWith("www.")) { // NOI18N
method = "http://" + method; // NOI18N
}
// A URL such as http://netbeans.org - try to open it in a browser!
try {
URL url = new URL(method);
return new DeclarationLocation(url);
} catch (MalformedURLException mue) {
// URL is from user source... don't complain with exception dialogs etc.
;
}
}
return DeclarationLocation.NONE;
}