func TypeEqual()

in arrow/compare.go [41:98]
56 lines of code
23 McCabe index (conditional complexity)

func TypeEqual(left, right DataType, opts ...TypeEqualOption) bool {
	var cfg typeEqualsConfig
	for _, opt := range opts {
		opt(&cfg)
	}

	switch {
	case left == nil || right == nil:
		return left == nil && right == nil
	case left.ID() != right.ID():
		return false
	}

	switch l := left.(type) {
	case ExtensionType:
		return l.ExtensionEquals(right.(ExtensionType))
	case *ListType:
		if !TypeEqual(l.Elem(), right.(*ListType).Elem(), opts...) {
			return false
		}
		if cfg.metadata {
			return l.elem.Metadata.Equal(right.(*ListType).elem.Metadata)
		}
		return l.elem.Nullable == right.(*ListType).elem.Nullable
	case *FixedSizeListType:
		if !TypeEqual(l.Elem(), right.(*FixedSizeListType).Elem(), opts...) {
			return false
		}
		if cfg.metadata {
			return l.elem.Metadata.Equal(right.(*FixedSizeListType).elem.Metadata)
		}
		return l.n == right.(*FixedSizeListType).n && l.elem.Nullable == right.(*FixedSizeListType).elem.Nullable
	case *StructType:
		r := right.(*StructType)
		switch {
		case len(l.fields) != len(r.fields):
			return false
		case !reflect.DeepEqual(l.index, r.index):
			return false
		}
		for i := range l.fields {
			leftField, rightField := l.fields[i], r.fields[i]
			switch {
			case leftField.Name != rightField.Name:
				return false
			case leftField.Nullable != rightField.Nullable:
				return false
			case !TypeEqual(leftField.Type, rightField.Type, opts...):
				return false
			case cfg.metadata && !leftField.Metadata.Equal(rightField.Metadata):
				return false
			}
		}
		return true
	default:
		return reflect.DeepEqual(left, right)
	}
}