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gconv_convert.go
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/
gconv_convert.go
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// Copyright GoFrame Author(https://goframe.org). All Rights Reserved.
//
// This Source Code Form is subject to the terms of the MIT License.
// If a copy of the MIT was not distributed with this file,
// You can obtain one at https://github.com/gogf/gf.
package gconv
import (
"github.com/shopspring/decimal"
"reflect"
"time"
"github.com/gogf/gf/v2/os/gtime"
)
// Convert converts the variable `fromValue` to the type `toTypeName`, the type `toTypeName` is specified by string.
// The optional parameter `extraParams` is used for additional necessary parameter for this conversion.
// It supports common types conversion as its conversion based on type name string.
func Convert(fromValue interface{}, toTypeName string, extraParams ...interface{}) interface{} {
return doConvert(doConvertInput{
FromValue: fromValue,
ToTypeName: toTypeName,
ReferValue: nil,
Extra: extraParams,
})
}
type doConvertInput struct {
FromValue interface{} // Value that is converted from.
ToTypeName string // Target value type name in string.
ReferValue interface{} // Referred value, a value in type `ToTypeName`.
Extra []interface{} // Extra values for implementing the converting.
// Marks that the value is already converted and set to `ReferValue`. Caller can ignore the returned result.
// It is an attribute for internal usage purpose.
alreadySetToReferValue bool
}
// doConvert does commonly use types converting.
func doConvert(in doConvertInput) (convertedValue interface{}) {
switch in.ToTypeName {
case "int":
return Int(in.FromValue)
case "*int":
if _, ok := in.FromValue.(*int); ok {
return in.FromValue
}
v := Int(in.FromValue)
return &v
case "int8":
return Int8(in.FromValue)
case "*int8":
if _, ok := in.FromValue.(*int8); ok {
return in.FromValue
}
v := Int8(in.FromValue)
return &v
case "int16":
return Int16(in.FromValue)
case "*int16":
if _, ok := in.FromValue.(*int16); ok {
return in.FromValue
}
v := Int16(in.FromValue)
return &v
case "int32":
return Int32(in.FromValue)
case "*int32":
if _, ok := in.FromValue.(*int32); ok {
return in.FromValue
}
v := Int32(in.FromValue)
return &v
case "int64":
return Int64(in.FromValue)
case "*int64":
if _, ok := in.FromValue.(*int64); ok {
return in.FromValue
}
v := Int64(in.FromValue)
return &v
case "uint":
return Uint(in.FromValue)
case "*uint":
if _, ok := in.FromValue.(*uint); ok {
return in.FromValue
}
v := Uint(in.FromValue)
return &v
case "uint8":
return Uint8(in.FromValue)
case "*uint8":
if _, ok := in.FromValue.(*uint8); ok {
return in.FromValue
}
v := Uint8(in.FromValue)
return &v
case "uint16":
return Uint16(in.FromValue)
case "*uint16":
if _, ok := in.FromValue.(*uint16); ok {
return in.FromValue
}
v := Uint16(in.FromValue)
return &v
case "uint32":
return Uint32(in.FromValue)
case "*uint32":
if _, ok := in.FromValue.(*uint32); ok {
return in.FromValue
}
v := Uint32(in.FromValue)
return &v
case "uint64":
return Uint64(in.FromValue)
case "*uint64":
if _, ok := in.FromValue.(*uint64); ok {
return in.FromValue
}
v := Uint64(in.FromValue)
return &v
case "float32":
return Float32(in.FromValue)
case "*float32":
if _, ok := in.FromValue.(*float32); ok {
return in.FromValue
}
v := Float32(in.FromValue)
return &v
case "float64":
return Float64(in.FromValue)
case "*float64":
if _, ok := in.FromValue.(*float64); ok {
return in.FromValue
}
v := Float64(in.FromValue)
return &v
case "bool":
return Bool(in.FromValue)
case "*bool":
if _, ok := in.FromValue.(*bool); ok {
return in.FromValue
}
v := Bool(in.FromValue)
return &v
case "string":
return String(in.FromValue)
case "*string":
if _, ok := in.FromValue.(*string); ok {
return in.FromValue
}
v := String(in.FromValue)
return &v
case "[]byte":
return Bytes(in.FromValue)
case "[]int":
return Ints(in.FromValue)
case "[]int32":
return Int32s(in.FromValue)
case "[]int64":
return Int64s(in.FromValue)
case "[]uint":
return Uints(in.FromValue)
case "[]uint8":
return Bytes(in.FromValue)
case "[]uint32":
return Uint32s(in.FromValue)
case "[]uint64":
return Uint64s(in.FromValue)
case "[]float32":
return Float32s(in.FromValue)
case "[]float64":
return Float64s(in.FromValue)
case "[]string":
return Strings(in.FromValue)
case "Time", "time.Time":
if len(in.Extra) > 0 {
return Time(in.FromValue, String(in.Extra[0]))
}
return Time(in.FromValue)
case "*time.Time":
var v interface{}
if len(in.Extra) > 0 {
v = Time(in.FromValue, String(in.Extra[0]))
} else {
if _, ok := in.FromValue.(*time.Time); ok {
return in.FromValue
}
v = Time(in.FromValue)
}
return &v
case "decimal.Decimal":
v, _ := decimal.NewFromString(String(in.FromValue))
return v
case "GTime", "gtime.Time":
if len(in.Extra) > 0 {
if v := GTime(in.FromValue, String(in.Extra[0])); v != nil {
return *v
} else {
return *gtime.New()
}
}
if v := GTime(in.FromValue); v != nil {
return *v
} else {
return *gtime.New()
}
case "*gtime.Time":
if len(in.Extra) > 0 {
if v := GTime(in.FromValue, String(in.Extra[0])); v != nil {
return v
} else {
return gtime.New()
}
}
if v := GTime(in.FromValue); v != nil {
return v
} else {
return gtime.New()
}
case "Duration", "time.Duration":
return Duration(in.FromValue)
case "*time.Duration":
if _, ok := in.FromValue.(*time.Duration); ok {
return in.FromValue
}
v := Duration(in.FromValue)
return &v
case "map[string]string":
return MapStrStr(in.FromValue)
case "map[string]interface{}":
return Map(in.FromValue)
case "[]map[string]interface{}":
return Maps(in.FromValue)
case "json.RawMessage":
return Bytes(in.FromValue)
default:
if in.ReferValue != nil {
var referReflectValue reflect.Value
if v, ok := in.ReferValue.(reflect.Value); ok {
referReflectValue = v
} else {
referReflectValue = reflect.ValueOf(in.ReferValue)
}
defer func() {
if recover() != nil {
if err := bindVarToReflectValue(referReflectValue, in.FromValue, nil); err == nil {
in.alreadySetToReferValue = true
convertedValue = referReflectValue.Interface()
}
}
}()
in.ToTypeName = referReflectValue.Kind().String()
in.ReferValue = nil
return reflect.ValueOf(doConvert(in)).Convert(referReflectValue.Type()).Interface()
}
return in.FromValue
}
}
func doConvertWithReflectValueSet(reflectValue reflect.Value, in doConvertInput) {
convertedValue := doConvert(in)
if !in.alreadySetToReferValue {
reflectValue.Set(reflect.ValueOf(convertedValue))
}
}