private static IRegion getPathRegion(
PathNameCS pathNameCS, IRegion selection, int[] selectedPos) {
int[] positions = getPathPos(pathNameCS);
if (positions == null) {
return HyperlinkUtil.createRegion(pathNameCS);
}
int nameOffset = pathNameCS.getStartOffset();
int i = 0;
for (SimpleNameCS name : pathNameCS.getSimpleNames()) {
int offset = selection.getOffset();
if (nameOffset <= offset && offset <= nameOffset + name.getValue().length()) {
selectedPos[0] = i;
return new Region(nameOffset, name.getValue().length());
}
if (i == positions.length) {
break;
}
nameOffset = positions[i++];
}
return HyperlinkUtil.createRegion(pathNameCS);
}
private static int[] getPathPos(PathNameCS pathNameCS) {
EList<SimpleNameCS> sequenceOfNames = pathNameCS.getSimpleNames();
if (sequenceOfNames.size() == 1) {
return null;
}
int size = sequenceOfNames.size() - 1;
int[] positions = new int[size];
Arrays.fill(positions, -1);
IToken startToken = pathNameCS.getStartToken();
IToken endToken = pathNameCS.getEndToken();
IPrsStream prsStream = startToken.getIPrsStream();
IToken nextToken = startToken;
int tokenIndex = 1;
int i = 0;
while (nextToken != endToken) {
nextToken = prsStream.getIToken(startToken.getTokenIndex() + tokenIndex++);
if (nextToken.getKind() == QVTOParsersym.TK_IDENTIFIER) {
positions[i++] = nextToken.getStartOffset();
if (i == positions.length) {
// safety exit in case we have inconsistent start end token
break;
}
}
}
return positions;
}
private static EModelElementRef findReferencedMetamodelElement(
CSTNode syntaxElement, IRegion region) {
Object astObj = syntaxElement.getAst();
if (astObj instanceof EClassifier) {
if (syntaxElement instanceof SimpleNameCS) {
if (astObj instanceof EModelElement) {
return new EModelElementRef(
(EModelElement) astObj, HyperlinkUtil.createRegion(syntaxElement));
}
} else if (syntaxElement instanceof PathNameCS && !isConstructorCS(syntaxElement)) {
if (astObj instanceof ENamedElement) {
PathNameCS pathNameCS = (PathNameCS) syntaxElement;
int[] selectedNamePos = new int[1];
// IRegion resultRegion = refineRegion(pathNameCS, region, selectedNamePos);
IRegion resultRegion = getPathRegion(pathNameCS, region, selectedNamePos);
if (resultRegion != null) {
ENamedElement ast = (ENamedElement) pathNameCS.getAst();
int pos = selectedNamePos[0];
final EList<SimpleNameCS> csNames = pathNameCS.getSimpleNames();
if (pos >= 0 && pos < csNames.size() - 1) {
QvtOperationalEnv env = getEnv(pathNameCS);
List<SimpleNameCS> selectedNames = csNames.subList(0, pos + 1);
List<String> stringNames = new ArrayList<String>(selectedNames.size());
for (SimpleNameCS nameCS : selectedNames) {
stringNames.add(nameCS.getValue());
}
ast = env.lookupClassifier(stringNames);
if (ast == null) {
ast = env.lookupPackage(stringNames);
}
}
if (ast != null) {
return new EModelElementRef(ast, resultRegion);
}
}
}
}
} else if (astObj instanceof EEnumLiteral) {
return new EModelElementRef((EEnumLiteral) astObj, HyperlinkUtil.createRegion(syntaxElement));
}
return null;
}