Bug 96926 [quick fix] Change method return type quick fix gives invalid proposal for wildcard types
Against I20050527-0010: Code: void a() { ArrayList<? extends Number> b = null; return b.get(0); } Ask for a quick fix on the compile error. Three things happen: 1) BAD: The quick fix is entitled "Change method return type to '? extends Number'". 2) GOOD: The correct return type, Number, is shown originally. 3) BAD: However, the top completion proposal, and the one chosen if the user simply hits return, is "? extends Number", which creates a compile error.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/text/correction/ASTResolving.java
case ASTNode.POSTFIX_EXPRESSION:
				case ASTNode.PREFIX_EXPRESSION:
					return true;
				default:
					return false;
			}
			curr= parent;
			parent= curr.getParent();
		}
		return false;
	}
	public static int getPossibleTypeKinds(ASTNode node, boolean is50OrHigher) {
		int kinds= internalGetPossibleTypeKinds(node);
		if (!is50OrHigher) {
			kinds &= (SimilarElementsRequestor.INTERFACES | SimilarElementsRequestor.CLASSES);
		}
		return kinds;
	}
	
	
	private static int internalGetPossibleTypeKinds(ASTNode node) {
		int kind= SimilarElementsRequestor.ALL_TYPES;
		ASTNode parent= node.getParent();
		while (parent instanceof QualifiedName) {
			if (node.getLocationInParent() == QualifiedName.QUALIFIER_PROPERTY) {
				return SimilarElementsRequestor.REF_TYPES;
			}
			node= parent;
			parent= parent.getParent();
		}