Method setupValuerAndSetter

schema/field.go:451–990

create valuer, setter when parse struct

(modelType reflect.Type)

// create valuer, setter when parse struct
func (field *Field) setupValuerAndSetter(modelType reflect.Type) {
	// Setup NewValuePool
	field.setupNewValuePool()

	// ValueOf returns field's value and if it is zero
	fieldIndex := field.StructField.Index[0]
	switch {
	case len(field.StructField.Index) == 1 && fieldIndex >= 0:
		field.ValueOf = func(ctx context.Context, v reflect.Value) (interface{}, bool) {
			v = reflect.Indirect(v)
			fieldValue := v.Field(fieldIndex)
			return fieldValue.Interface(), fieldValue.IsZero()
		}
	default:
		field.ValueOf = func(ctx context.Context, v reflect.Value) (interface{}, bool) {
			v = reflect.Indirect(v)
			for _, fieldIdx := range field.StructField.Index {
				if fieldIdx >= 0 {
					v = v.Field(fieldIdx)
				} else {
					v = v.Field(-fieldIdx - 1)

					if !v.IsNil() {
						v = v.Elem()
					} else {
						return nil, true
					}
				}
			}

			fv, zero := v.Interface(), v.IsZero()
			return fv, zero
		}
	}

	if field.Serializer != nil {
		oldValuerOf := field.ValueOf
		field.ValueOf = func(ctx context.Context, v reflect.Value) (interface{}, bool) {
			value, zero := oldValuerOf(ctx, v)

			s, ok := value.(SerializerValuerInterface)
			if !ok {
				s = field.Serializer
			}

			return &serializer{
				Field:           field,
				SerializeValuer: s,
				Destination:     v,
				Context:         ctx,
				fieldValue:      value,
			}, zero
		}
	}

	// ReflectValueOf returns field's reflect value
	switch {
	case len(field.StructField.Index) == 1 && fieldIndex >= 0: