public static ITextSelection createSelectionExtension(
AbstractScopeNode<?> scope, ITextSelection selection) {
SelectionExtenderVisitor visitor = null;
try {
visitor = new SelectionExtenderVisitor(scope.getModule(), selection);
scope.getASTNode().accept(visitor);
} catch (Exception e) {
throw new RuntimeException(e);
}
return visitor.getSelection();
}
private void deduce() {
ModuleAdapter module = scopeAdapter.getModule();
List<SimpleAdapter> selected =
module.getWithinSelection(selection, scopeAdapter.getUsedVariables());
List<SimpleAdapter> before = new ArrayList<SimpleAdapter>();
List<SimpleAdapter> after = new ArrayList<SimpleAdapter>();
extractBeforeAfterVariables(selected, before, after);
deduceParameters(before, selected);
deduceReturns(after, selected);
}
@Override
public RefactoringStatus checkInitialConditions(IProgressMonitor pm) throws CoreException {
AbstractScopeNode<?> scope = info.getScopeAdapter();
ITextSelection selection = info.getUserSelection();
SimpleNode node = scope.getASTNode();
LocalVariablesVisitor visitor = new LocalVariablesVisitor();
try {
node.accept(visitor);
} catch (Exception e) {
throw new RuntimeException(e);
}
List<Name> variables = visitor.getVariables();
Name selectedVariable = findSelectedVariable(selection, variables);
if (selectedVariable == null) {
status.addFatalError(Messages.validationNoNameSelected);
return status;
}
List<Name> relatedVariables = findAllRelatedVariables(variables, selectedVariable);
Assign assignment = findAssignment(relatedVariables);
if (assignment == null) {
String id = selectedVariable.id;
status.addFatalError(Messages.format(Messages.inlinelocalNoAssignment, id));
return status;
}
if (!isValid(relatedVariables)) {
return status;
}
requestProcessor.setAssign(assignment);
requestProcessor.setVariables(relatedVariables);
return status;
}
private void extractBeforeAfterVariables(
List<SimpleAdapter> selectedVariables,
List<SimpleAdapter> before,
List<SimpleAdapter> after) {
List<SimpleAdapter> scopeVariables = scopeAdapter.getUsedVariables();
if (selectedVariables.isEmpty()) {
return;
}
SimpleAdapter firstSelectedVariable = selectedVariables.get(0);
SimpleAdapter lastSelectedVariable = selectedVariables.get(selectedVariables.size() - 1);
for (SimpleAdapter adapter : scopeVariables) {
if (isBeforeSelectedLine(firstSelectedVariable, adapter)
|| isBeforeOnSameLine(firstSelectedVariable, adapter)) {
before.add(adapter);
} else if (isAfterSelectedLine(lastSelectedVariable, adapter)
|| isAfterOnSameLine(lastSelectedVariable, adapter)) {
after.add(adapter);
}
}
}