private static boolean isAssignable()

in src/main/java/org/apache/commons/lang3/reflect/TypeUtils.java [988:1042]
33 lines of code
14 McCabe index (conditional complexity)

    private static boolean isAssignable(final Type type, final Class<?> toClass) {
        if (type == null) {
            // consistency with ClassUtils.isAssignable() behavior
            return toClass == null || !toClass.isPrimitive();
        }

        // only a null type can be assigned to null type which
        // would have cause the previous to return true
        if (toClass == null) {
            return false;
        }

        // all types are assignable to themselves
        if (toClass.equals(type)) {
            return true;
        }

        if (type instanceof Class<?>) {
            // just comparing two classes
            return ClassUtils.isAssignable((Class<?>) type, toClass);
        }

        if (type instanceof ParameterizedType) {
            // only have to compare the raw type to the class
            return isAssignable(getRawType((ParameterizedType) type), toClass);
        }

        // *
        if (type instanceof TypeVariable<?>) {
            // if any of the bounds are assignable to the class, then the
            // type is assignable to the class.
            for (final Type bound : ((TypeVariable<?>) type).getBounds()) {
                if (isAssignable(bound, toClass)) {
                    return true;
                }
            }

            return false;
        }

        // the only classes to which a generic array type can be assigned
        // are class Object and array classes
        if (type instanceof GenericArrayType) {
            return toClass.equals(Object.class)
                    || toClass.isArray() && isAssignable(((GenericArrayType) type).getGenericComponentType(), toClass.getComponentType());
        }

        // wildcard types are not assignable to a class (though one would think
        // "? super Object" would be assignable to Object)
        if (type instanceof WildcardType) {
            return false;
        }

        throw new IllegalStateException("found an unhandled type: " + type);
    }