Function Extend

dsl/result_type.go:455–468

Extend adds the parameter type attributes to the type using Extend. The parameter type must be an object. Extend may be used in Type or ResultType. Extend accepts a single argument: the type or result type containing the attributes to be copied. Example: var CreateBottlePayload = Type("CreateBot

(t expr.DataType)

//	    Extend(CreateBottlePayload) // Adds attributes "name" and "vintage"
//	})
func Extend(t expr.DataType) {
	if !expr.IsObject(t) {
		eval.ReportError("argument of Extend must be an object, got %s", t.Name())
		return
	}
	switch def := eval.Current().(type) {
	case *expr.ResultTypeExpr:
		def.Bases = append(def.Bases, t)
	case *expr.AttributeExpr:
		def.Bases = append(def.Bases, t)
	default:
		eval.IncompatibleDSL()
	}
}

// Attributes implements the result type Attributes DSL. See ResultType.
func Attributes(fn func()) {