active3/core/fields/dfield_any.go

// ------------------------------------------------------------------------
// ℹ️ Project active3
//   Active Thing (activething.com) git.activething.com/go
//
//   File name  field_any.go
// ✍️ Created by DEV
// 📅 Modified   01/05/2024
//
// 🔒 COPYRIGHT  Copyright 2024 activething.com 
// ------------------------------------------------------------------------
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// ------------------------------------------------------------------------

package fields

import (
	"ablds"
	"reflect"
	"time"
)

type (

	// DFieldAny representa un Field que puede tener cualquier tipo de valor,
	// pero cuyo valor se calcula de forma diferida mediante la llamada a la función
	// del campo valueFn. A diferencia de los otros DField implementa todas las
	// funciones de NativeResolver realizando la conversion de Any a los demas
	// valores
	DFieldAny struct {
		partialField
		valueFn	  func() any 
	}
)


func NewDFieldAny (name string, valueFn func() any) *DFieldAny {
	if valueFn == nil {
		panic(G.ErrInvalidDeferFunc)
	}
	return &DFieldAny{
		partialField : makePartialField(name),
		valueFn		 : valueFn } }



func (_ DFieldAny) Kind() Kind {
	return KindAny | KindDefer }


func (f DFieldAny) Value() any {
	return f.valueFn() }




func (f DFieldAny) Bool   () (bool,bool) {
	v,ok := f.valueFn().(bool)
	return v,ok
}

func (f DFieldAny) Binary () ([]byte,bool) {
	v, ok := f.valueFn().([]byte)
	return v, ok
}

func (f DFieldAny) String () (string,bool) {
	v,ok := f.valueFn().(string)
	return v,ok
}

func (f DFieldAny) Int () (int,bool) {
	switch t := f.valueFn().(type) {
	case int  : return t,true
	case int8 : return int(t),true
	case int16: return int(t),true
	case int32: return int(t),true
	case int64: return int(t),true
	default	  : return 0,false
	}
}

func (f DFieldAny) Uint () (uint,bool) {
	switch t := f.valueFn().(type) {
	case uint  : return t,true
	case uint8 : return uint(t),true
	case uint16: return uint(t),true
	case uint32: return uint(t),true
	case uint64: return uint(t),true
	default	   : return 0,false
	}
}

func (f DFieldAny) Float () (float64,bool) {
	v, ok := f.valueFn().(float64)
	if !ok {
		var f32 float32
		if f32,ok = f.valueFn().(float32); ok {
			v = float64(f32)
		}
	}
	return v, ok
}


func (f DFieldAny) Date () (time.Time,bool) {
	v, ok := f.valueFn().(time.Time)
	return v, ok
}

func (f DFieldAny) Time () (time.Time,bool) {
	v, ok := f.valueFn().(time.Time)
	return v, ok
}


func (f DFieldAny) Error () (error,bool) {
	v, ok := f.valueFn().(error)
	return v, ok
}


func (f DFieldAny) Reflect () (reflect.Value,bool) {
	v, ok := f.valueFn().(reflect.Value)
	return v, ok
}



func (f DFieldAny) Build (builder ablds.Builder) {
	builder.Object(func(b ablds.ObjectBuilder){
		b.Field(f.name).Any(f.valueFn()) }) }