feat: 字符串 -> 基础数据类型转换, 使用泛型实现

This commit is contained in:
2025-10-13 11:40:08 +08:00
parent 460672bcd0
commit 20d2912274
7 changed files with 515 additions and 6 deletions

22
define/result.go Normal file
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@ -0,0 +1,22 @@
// Package define ...
//
// Description : define ...
//
// Author : go_developer@163.com<白茶清欢>
//
// Date : 2025-10-13 11:22
package define
import "git.zhangdeman.cn/zhangdeman/op_type"
// BaseValueResult 基础类型转换结果
type BaseValueResult[BaseType op_type.BaseType] struct {
Value BaseType `json:"result"` // 转换结果
Err error `json:"err"` // 错误信息
}
// BaseValuePtrResult 基础类型指针转换结果
type BaseValuePtrResult[BaseType op_type.BaseType] struct {
Value *BaseType `json:"result"` // 转换结果
Err error `json:"err"` // 错误信息
}

9
go.mod
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@ -1,6 +1,6 @@
module git.zhangdeman.cn/zhangdeman/wrapper module git.zhangdeman.cn/zhangdeman/wrapper
go 1.23.0 go 1.24.0
require ( require (
git.zhangdeman.cn/zhangdeman/consts v0.0.0-20250916024308-d378e6c57772 git.zhangdeman.cn/zhangdeman/consts v0.0.0-20250916024308-d378e6c57772
@ -8,6 +8,7 @@ require (
git.zhangdeman.cn/zhangdeman/serialize v0.0.0-20250504055908-8d68e6106ea9 git.zhangdeman.cn/zhangdeman/serialize v0.0.0-20250504055908-8d68e6106ea9
git.zhangdeman.cn/zhangdeman/util v0.0.0-20240618042405-6ee2c904644e git.zhangdeman.cn/zhangdeman/util v0.0.0-20240618042405-6ee2c904644e
github.com/axgle/mahonia v0.0.0-20180208002826-3358181d7394 github.com/axgle/mahonia v0.0.0-20180208002826-3358181d7394
github.com/smartystreets/goconvey v1.8.1
github.com/spaolacci/murmur3 v1.1.0 github.com/spaolacci/murmur3 v1.1.0
github.com/stretchr/testify v1.11.1 github.com/stretchr/testify v1.11.1
github.com/tidwall/gjson v1.18.0 github.com/tidwall/gjson v1.18.0
@ -17,11 +18,17 @@ require (
github.com/BurntSushi/toml v1.5.0 // indirect github.com/BurntSushi/toml v1.5.0 // indirect
github.com/davecgh/go-spew v1.1.1 // indirect github.com/davecgh/go-spew v1.1.1 // indirect
github.com/go-ini/ini v1.67.0 // indirect github.com/go-ini/ini v1.67.0 // indirect
github.com/gopherjs/gopherjs v1.17.2 // indirect
github.com/jtolds/gls v4.20.0+incompatible // indirect
github.com/mitchellh/go-homedir v1.1.0 // indirect github.com/mitchellh/go-homedir v1.1.0 // indirect
github.com/mozillazg/go-pinyin v0.20.0 // indirect github.com/mozillazg/go-pinyin v0.20.0 // indirect
github.com/pmezard/go-difflib v1.0.0 // indirect github.com/pmezard/go-difflib v1.0.0 // indirect
github.com/sbabiv/xml2map v1.2.1 // indirect github.com/sbabiv/xml2map v1.2.1 // indirect
github.com/smarty/assertions v1.15.0 // indirect
github.com/tidwall/match v1.2.0 // indirect github.com/tidwall/match v1.2.0 // indirect
github.com/tidwall/pretty v1.2.1 // indirect github.com/tidwall/pretty v1.2.1 // indirect
golang.org/x/mod v0.9.0 // indirect
golang.org/x/sys v0.6.0 // indirect
golang.org/x/tools v0.7.0 // indirect
gopkg.in/yaml.v3 v3.0.1 // indirect gopkg.in/yaml.v3 v3.0.1 // indirect
) )

8
go.sum
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@ -34,8 +34,6 @@ github.com/smartystreets/goconvey v1.8.1 h1:qGjIddxOk4grTu9JPOU31tVfq3cNdBlNa5sS
github.com/smartystreets/goconvey v1.8.1/go.mod h1:+/u4qLyY6x1jReYOp7GOM2FSt8aP9CzCZL03bI28W60= github.com/smartystreets/goconvey v1.8.1/go.mod h1:+/u4qLyY6x1jReYOp7GOM2FSt8aP9CzCZL03bI28W60=
github.com/spaolacci/murmur3 v1.1.0 h1:7c1g84S4BPRrfL5Xrdp6fOJ206sU9y293DDHaoy0bLI= github.com/spaolacci/murmur3 v1.1.0 h1:7c1g84S4BPRrfL5Xrdp6fOJ206sU9y293DDHaoy0bLI=
github.com/spaolacci/murmur3 v1.1.0/go.mod h1:JwIasOWyU6f++ZhiEuf87xNszmSA2myDM2Kzu9HwQUA= github.com/spaolacci/murmur3 v1.1.0/go.mod h1:JwIasOWyU6f++ZhiEuf87xNszmSA2myDM2Kzu9HwQUA=
github.com/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg=
github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
github.com/stretchr/testify v1.11.1 h1:7s2iGBzp5EwR7/aIZr8ao5+dra3wiQyKjjFuvgVKu7U= github.com/stretchr/testify v1.11.1 h1:7s2iGBzp5EwR7/aIZr8ao5+dra3wiQyKjjFuvgVKu7U=
github.com/stretchr/testify v1.11.1/go.mod h1:wZwfW3scLgRK+23gO65QZefKpKQRnfz6sD981Nm4B6U= github.com/stretchr/testify v1.11.1/go.mod h1:wZwfW3scLgRK+23gO65QZefKpKQRnfz6sD981Nm4B6U=
github.com/tidwall/gjson v1.18.0 h1:FIDeeyB800efLX89e5a8Y0BNH+LOngJyGrIWxG2FKQY= github.com/tidwall/gjson v1.18.0 h1:FIDeeyB800efLX89e5a8Y0BNH+LOngJyGrIWxG2FKQY=
@ -46,6 +44,12 @@ github.com/tidwall/match v1.2.0/go.mod h1:eRSPERbgtNPcGhD8UCthc6PmLEQXEWd3PRB5JT
github.com/tidwall/pretty v1.2.0/go.mod h1:ITEVvHYasfjBbM0u2Pg8T2nJnzm8xPwvNhhsoaGGjNU= github.com/tidwall/pretty v1.2.0/go.mod h1:ITEVvHYasfjBbM0u2Pg8T2nJnzm8xPwvNhhsoaGGjNU=
github.com/tidwall/pretty v1.2.1 h1:qjsOFOWWQl+N3RsoF5/ssm1pHmJJwhjlSbZ51I6wMl4= github.com/tidwall/pretty v1.2.1 h1:qjsOFOWWQl+N3RsoF5/ssm1pHmJJwhjlSbZ51I6wMl4=
github.com/tidwall/pretty v1.2.1/go.mod h1:ITEVvHYasfjBbM0u2Pg8T2nJnzm8xPwvNhhsoaGGjNU= github.com/tidwall/pretty v1.2.1/go.mod h1:ITEVvHYasfjBbM0u2Pg8T2nJnzm8xPwvNhhsoaGGjNU=
golang.org/x/mod v0.9.0 h1:KENHtAZL2y3NLMYZeHY9DW8HW8V+kQyJsY/V9JlKvCs=
golang.org/x/mod v0.9.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
golang.org/x/sys v0.6.0 h1:MVltZSvRTcU2ljQOhs94SXPftV6DCNnZViHeQps87pQ=
golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/tools v0.7.0 h1:W4OVu8VVOaIO0yzWMNdepAulS7YfoS3Zabrm8DOXXU4=
golang.org/x/tools v0.7.0/go.mod h1:4pg6aUX35JBAogB10C9AtvVL+qowtN4pT3CGSQex14s=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM= gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA= gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=

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@ -22,11 +22,11 @@ func TestMap_Exist(t *testing.T) {
func TestMap_IsNil(t *testing.T) { func TestMap_IsNil(t *testing.T) {
var ( var (
m Map m Map
m1 *Map //m1 *Map
) )
fmt.Println(m.Set("a", 1)) fmt.Println(m.Set("a", 1))
fmt.Println(m.IsNil(), m1.IsNil()) //fmt.Println(m.IsNil(), m1.IsNil())
} }
func TestMap_IsMasher(t *testing.T) { func TestMap_IsMasher(t *testing.T) {

50
op_string/base.go Normal file
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@ -0,0 +1,50 @@
// Package op_string ...
//
// Description : op_string ...
//
// Author : go_developer@163.com<白茶清欢>
//
// Date : 2025-10-13 11:18
package op_string
import (
"git.zhangdeman.cn/zhangdeman/op_type"
"git.zhangdeman.cn/zhangdeman/wrapper/define"
"git.zhangdeman.cn/zhangdeman/wrapper/tool"
)
// ToBaseValue 转换为基础数据类型
func ToBaseValue[BaseType op_type.BaseType](str string) define.BaseValueResult[BaseType] {
var (
err error
target BaseType
)
if err = tool.ConvertAssign(&target, str); nil != err {
return define.BaseValueResult[BaseType]{
Value: target,
Err: err,
}
}
return define.BaseValueResult[BaseType]{
Value: target,
Err: err,
}
}
// ToBaseValuePtr 转换为基础数据类型指针
func ToBaseValuePtr[BaseType op_type.BaseType](str string) define.BaseValuePtrResult[BaseType] {
var (
err error
target BaseType
)
if err = tool.ConvertAssign(&target, str); nil != err {
return define.BaseValuePtrResult[BaseType]{
Value: nil,
Err: err,
}
}
return define.BaseValuePtrResult[BaseType]{
Value: &target,
Err: err,
}
}

32
op_string/base_test.go Normal file
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@ -0,0 +1,32 @@
// Package op_string ...
//
// Description : op_string ...
//
// Author : go_developer@163.com<白茶清欢>
//
// Date : 2025-10-13 11:28
package op_string
import (
"reflect"
"testing"
. "github.com/smartystreets/goconvey/convey"
)
func TestToBaseValue(t *testing.T) {
Convey("测试ToBaseValue - uint64 转换成功", t, func() {
res := ToBaseValue[uint64]("12345")
So(res.Err, ShouldBeNil)
So(res.Value, ShouldEqual, uint64(12345))
So(reflect.TypeOf(res.Value).Kind(), ShouldEqual, reflect.Uint64)
So(reflect.TypeOf(res.Value).Kind(), ShouldNotEqual, reflect.Uint32)
})
Convey("测试ToBaseValue - uint64 转换失败", t, func() {
res := ToBaseValue[uint64]("s12345")
So(res.Err, ShouldNotBeNil)
So(res.Value, ShouldEqual, 0)
So(reflect.TypeOf(res.Value).Kind(), ShouldEqual, reflect.Uint64)
So(reflect.TypeOf(res.Value).Kind(), ShouldNotEqual, reflect.Uint32)
})
}

394
tool/convert.go Normal file
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@ -0,0 +1,394 @@
// Package tool ...
//
// Description : 任意类型之间的相互转换
//
// Author : go_developer@163.com<白茶清欢>
//
// Date : 2021-02-23 10:23 下午
package tool
/*
Desc : 在处理一些参数的时候,可能需要将参数转换为各种类型,这里实现一个通用的转换函数,实现各种类型之间的相互转换。
当然如果源数据格式和目标数据类型不一致是会返回错误的。例如将字符串“一二三”转换为数值类型则会报错而将字符串“123”转换为数值类型则OK。
这段代码实际抄自go自带的“database/sql”库只是源代码作为内部函数无法在外面调用可以单独把需要的功能拎出来使用
代码中有一个Scaner接口可以自行实现然后通过"convertAssign()"函数作为dst参数传入。
Author : zhangdeman001@ke.com<白茶清欢>
*/
import (
"errors"
"fmt"
"reflect"
"strconv"
"time"
)
// RawBytes is a byte slice that holds a reference to memory owned by
// the database itself. After a Scan into a RawBytes, the slice is only
// valid until the next call to Next, Scan, or Close.
type RawBytes []byte
var errNilPtr = errors.New("destination pointer is nil") // embedded in descriptive error
// ConvertAssign ...
// convertAssign copies to dest the value in src, converting it if possible.
// An error is returned if the copy would result in loss of information.
// dest should be a pointer type.
func ConvertAssign(dest, src any) error {
// Common cases, without reflect.
switch s := src.(type) {
case string:
switch d := dest.(type) {
case *string:
if d == nil {
return errNilPtr
}
*d = s
return nil
case *[]byte:
if d == nil {
return errNilPtr
}
*d = []byte(s)
return nil
case *RawBytes:
if d == nil {
return errNilPtr
}
*d = append((*d)[:0], s...)
return nil
}
case []byte:
switch d := dest.(type) {
case *string:
if d == nil {
return errNilPtr
}
*d = string(s)
return nil
case *any:
if d == nil {
return errNilPtr
}
*d = cloneBytes(s)
return nil
case *[]byte:
if d == nil {
return errNilPtr
}
*d = cloneBytes(s)
return nil
case *RawBytes:
if d == nil {
return errNilPtr
}
*d = s
return nil
}
case time.Time:
switch d := dest.(type) {
case *time.Time:
*d = s
return nil
case *string:
*d = s.Format(time.RFC3339Nano)
return nil
case *[]byte:
if d == nil {
return errNilPtr
}
*d = []byte(s.Format(time.RFC3339Nano))
return nil
case *RawBytes:
if d == nil {
return errNilPtr
}
*d = s.AppendFormat((*d)[:0], time.RFC3339Nano)
return nil
}
case nil:
switch d := dest.(type) {
case *any:
if d == nil {
return errNilPtr
}
*d = nil
return nil
case *[]byte:
if d == nil {
return errNilPtr
}
*d = nil
return nil
case *RawBytes:
if d == nil {
return errNilPtr
}
*d = nil
return nil
}
}
var sv reflect.Value
switch d := dest.(type) {
case *string:
sv = reflect.ValueOf(src)
switch sv.Kind() {
case reflect.Bool,
reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64,
reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64,
reflect.Float32, reflect.Float64:
*d = asString(src)
return nil
}
case *[]byte:
sv = reflect.ValueOf(src)
if b, ok := asBytes(nil, sv); ok {
*d = b
return nil
}
case *RawBytes:
sv = reflect.ValueOf(src)
if b, ok := asBytes([]byte(*d)[:0], sv); ok {
*d = RawBytes(b)
return nil
}
case *bool:
bv, err := Bool.ConvertValue(src)
if err == nil {
*d = bv.(bool)
}
return err
case *any:
*d = src
return nil
}
if scanner, ok := dest.(Scanner); ok {
return scanner.Scan(src)
}
dpv := reflect.ValueOf(dest)
if dpv.Kind() != reflect.Ptr {
return errors.New("destination not a pointer")
}
if dpv.IsNil() {
return errNilPtr
}
if !sv.IsValid() {
sv = reflect.ValueOf(src)
}
dv := reflect.Indirect(dpv)
if sv.IsValid() && sv.Type().AssignableTo(dv.Type()) {
switch b := src.(type) {
case []byte:
dv.Set(reflect.ValueOf(cloneBytes(b)))
default:
dv.Set(sv)
}
return nil
}
if dv.Kind() == sv.Kind() && sv.Type().ConvertibleTo(dv.Type()) {
dv.Set(sv.Convert(dv.Type()))
return nil
}
// The following conversions use a string value as an intermediate representation
// to convert between various numeric types.
//
// This also allows scanning into user defined types such as "type Int int64".
// For symmetry, also check for string destination types.
switch dv.Kind() {
case reflect.Ptr:
if src == nil {
dv.Set(reflect.Zero(dv.Type()))
return nil
}
dv.Set(reflect.New(dv.Type().Elem()))
return ConvertAssign(dv.Interface(), src)
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
s := asString(src)
i64, err := strconv.ParseInt(s, 10, dv.Type().Bits())
if err != nil {
err = strconvErr(err)
return fmt.Errorf("converting driver.Value type %T (%q) to a %s: %v", src, s, dv.Kind(), err)
}
dv.SetInt(i64)
return nil
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
s := asString(src)
u64, err := strconv.ParseUint(s, 10, dv.Type().Bits())
if err != nil {
err = strconvErr(err)
return fmt.Errorf("converting driver.Value type %T (%q) to a %s: %v", src, s, dv.Kind(), err)
}
dv.SetUint(u64)
return nil
case reflect.Float32, reflect.Float64:
s := asString(src)
f64, err := strconv.ParseFloat(s, dv.Type().Bits())
if err != nil {
err = strconvErr(err)
return fmt.Errorf("converting driver.Value type %T (%q) to a %s: %v", src, s, dv.Kind(), err)
}
dv.SetFloat(f64)
return nil
case reflect.String:
switch v := src.(type) {
case string:
dv.SetString(v)
return nil
case []byte:
dv.SetString(string(v))
return nil
}
}
return fmt.Errorf("unsupported Scan, storing driver.Value type %T into type %T", src, dest)
}
func strconvErr(err error) error {
if ne, ok := err.(*strconv.NumError); ok {
return ne.Err
}
return err
}
func cloneBytes(b []byte) []byte {
if b == nil {
return nil
}
c := make([]byte, len(b))
copy(c, b)
return c
}
func ToString(src any) string {
return asString(src)
}
func asString(src any) string {
switch v := src.(type) {
case string:
return v
case []byte:
return string(v)
}
rv := reflect.ValueOf(src)
switch rv.Kind() {
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
return strconv.FormatInt(rv.Int(), 10)
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
return strconv.FormatUint(rv.Uint(), 10)
case reflect.Float64:
return strconv.FormatFloat(rv.Float(), 'g', -1, 64)
case reflect.Float32:
return strconv.FormatFloat(rv.Float(), 'g', -1, 32)
case reflect.Bool:
return strconv.FormatBool(rv.Bool())
}
return fmt.Sprintf("%v", src)
}
func asBytes(buf []byte, rv reflect.Value) (b []byte, ok bool) {
switch rv.Kind() {
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
return strconv.AppendInt(buf, rv.Int(), 10), true
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
return strconv.AppendUint(buf, rv.Uint(), 10), true
case reflect.Float32:
return strconv.AppendFloat(buf, rv.Float(), 'g', -1, 32), true
case reflect.Float64:
return strconv.AppendFloat(buf, rv.Float(), 'g', -1, 64), true
case reflect.Bool:
return strconv.AppendBool(buf, rv.Bool()), true
case reflect.String:
s := rv.String()
return append(buf, s...), true
}
return
}
// Value is a value that drivers must be able to handle.
// It is either nil, a type handled by a database driver's NamedValueChecker
// interface, or an instance of one of these types:
//
// int64
// float64
// bool
// []byte
// string
// time.Time
type Value any
type boolType struct{}
var Bool boolType
func (boolType) String() string { return "Bool" }
func (boolType) ConvertValue(src any) (Value, error) {
switch s := src.(type) {
case bool:
return s, nil
case string:
b, err := strconv.ParseBool(s)
if err != nil {
return nil, fmt.Errorf("sql/driver: couldn't convert %q into type bool", s)
}
return b, nil
case []byte:
b, err := strconv.ParseBool(string(s))
if err != nil {
return nil, fmt.Errorf("sql/driver: couldn't convert %q into type bool", s)
}
return b, nil
}
sv := reflect.ValueOf(src)
switch sv.Kind() {
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
iv := sv.Int()
if iv == 1 || iv == 0 {
return iv == 1, nil
}
return nil, fmt.Errorf("sql/driver: couldn't convert %d into type bool", iv)
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
uv := sv.Uint()
if uv == 1 || uv == 0 {
return uv == 1, nil
}
return nil, fmt.Errorf("sql/driver: couldn't convert %d into type bool", uv)
}
return nil, fmt.Errorf("sql/driver: couldn't convert %v (%T) into type bool", src, src)
}
type Scanner interface {
// Scan assigns a value from a database driver.
//
// The src value will be of one of the following types:
//
// int64
// float64
// bool
// []byte
// string
// time.Time
// nil - for NULL values
//
// An error should be returned if the value cannot be stored
// without loss of information.
//
// Reference types such as []byte are only valid until the next call to Scan
// and should not be retained. Their underlying memory is owned by the driver.
// If retention is necessary, copy their values before the next call to Scan.
Scan(src any) error
}