public static Type unrollVariables()

in bval-jsr/src/main/java/org/apache/bval/util/reflection/TypeUtils.java [1209:1242]
34 lines of code
9 McCabe index (conditional complexity)

    public static Type unrollVariables(Map<TypeVariable<?>, Type> typeArguments, final Type type) {
        if (typeArguments == null) {
            typeArguments = Collections.<TypeVariable<?>, Type> emptyMap();
        }
        if (containsTypeVariables(type)) {
            if (type instanceof TypeVariable<?>) {
                return unrollVariables(typeArguments, typeArguments.get(type));
            }
            if (type instanceof ParameterizedType) {
                final ParameterizedType p = (ParameterizedType) type;
                final Map<TypeVariable<?>, Type> parameterizedTypeArguments;
                if (p.getOwnerType() == null) {
                    parameterizedTypeArguments = typeArguments;
                } else {
                    parameterizedTypeArguments = new HashMap<>(typeArguments);
                    parameterizedTypeArguments.putAll(TypeUtils.getTypeArguments(p));
                }
                final Type[] args = p.getActualTypeArguments();
                for (int i = 0; i < args.length; i++) {
                    final Type unrolled = unrollVariables(parameterizedTypeArguments, args[i]);
                    if (unrolled != null) {
                        args[i] = unrolled;
                    }
                }
                return parameterizeWithOwner(p.getOwnerType(), (Class<?>) p.getRawType(), args);
            }
            if (type instanceof WildcardType) {
                final WildcardType wild = (WildcardType) type;
                return wildcardType().withUpperBounds(unrollBounds(typeArguments, wild.getUpperBounds()))
                    .withLowerBounds(unrollBounds(typeArguments, wild.getLowerBounds())).build();
            }
        }
        return type;
    }