public PsiReturnStatement addReturnForMethod(final PsiFile file, final PsiMethod method) {
final PsiModifierList modifiers = method.getModifierList();
if (modifiers.hasModifierProperty(PsiModifier.ABSTRACT) || method.getBody() == null) {
return null;
}
try {
final ConvertReturnStatementsVisitor visitor =
new ConvertReturnStatementsVisitor(factory, method, myTargetType);
ControlFlow controlFlow;
try {
controlFlow = HighlightControlFlowUtil.getControlFlowNoConstantEvaluate(method.getBody());
} catch (AnalysisCanceledException e) {
return null; // must be an error
}
PsiReturnStatement returnStatement;
if (controlFlow != null && ControlFlowUtil.processReturns(controlFlow, visitor)) {
// extra return statement not needed
// get latest modified return statement and select...
returnStatement = visitor.getLatestReturn();
} else {
returnStatement = visitor.createReturnInLastStatement();
}
if (method.getContainingFile() != file) {
UndoUtil.markPsiFileForUndo(file);
}
return returnStatement;
} catch (IncorrectOperationException e) {
LOG.error(e);
}
return null;
}
