@Nullable
private static GrExpression createDefaultValue(
GroovyPsiElementFactory factory,
JavaChangeInfo changeInfo,
JavaParameterInfo info,
final GrArgumentList list) {
if (info.isUseAnySingleVariable()) {
final PsiResolveHelper resolveHelper =
JavaPsiFacade.getInstance(list.getProject()).getResolveHelper();
final PsiType type = info.getTypeWrapper().getType(changeInfo.getMethod(), list.getManager());
final VariablesProcessor processor =
new VariablesProcessor(false) {
@Override
protected boolean check(PsiVariable var, ResolveState state) {
if (var instanceof PsiField
&& !resolveHelper.isAccessible((PsiField) var, list, null)) return false;
if (var instanceof GrVariable
&& PsiUtil.isLocalVariable(var)
&& list.getTextRange().getStartOffset() <= var.getTextRange().getStartOffset()) {
return false;
}
if (PsiTreeUtil.isAncestor(var, list, false)) return false;
final PsiType _type =
var instanceof GrVariable ? ((GrVariable) var).getTypeGroovy() : var.getType();
final PsiType varType = state.get(PsiSubstitutor.KEY).substitute(_type);
return type.isAssignableFrom(varType);
}
@Override
public boolean execute(@NotNull PsiElement pe, @NotNull ResolveState state) {
super.execute(pe, state);
return size() < 2;
}
};
ResolveUtil.treeWalkUp(list, processor, false);
if (processor.size() == 1) {
final PsiVariable result = processor.getResult(0);
return factory.createExpressionFromText(result.getName(), list);
}
if (processor.size() == 0) {
final PsiClass parentClass = PsiTreeUtil.getParentOfType(list, PsiClass.class);
if (parentClass != null) {
PsiClass containingClass = parentClass;
final Set<PsiClass> containingClasses = new HashSet<PsiClass>();
final PsiElementFactory jfactory = JavaPsiFacade.getElementFactory(list.getProject());
while (containingClass != null) {
if (type.isAssignableFrom(jfactory.createType(containingClass, PsiSubstitutor.EMPTY))) {
containingClasses.add(containingClass);
}
containingClass = PsiTreeUtil.getParentOfType(containingClass, PsiClass.class);
}
if (containingClasses.size() == 1) {
return factory.createThisExpression(
containingClasses.contains(parentClass)
? null
: containingClasses.iterator().next());
}
}
}
}
final String value = info.getDefaultValue();
return !StringUtil.isEmpty(value) ? factory.createExpressionFromText(value, list) : null;
}
