Function AsMap

expr/types.go:217–228

AsMap returns the type underlying map if any, nil otherwise.

(dt DataType)

// AsMap returns the type underlying map if any, nil otherwise.
func AsMap(dt DataType) *Map {
	switch t := dt.(type) {
	case *UserTypeExpr:
		return AsMap(t.Type)
	case *ResultTypeExpr:
		return AsMap(t.Type)
	case *Map:
		return t
	default:
		return nil
	}
}

// AsUnion returns the type underlying union if any, nil otherwise.
func AsUnion(dt DataType) *Union {