feat: 字符串 -> 基础数据类型转换, 使用泛型实现
This commit is contained in:
22
define/result.go
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22
define/result.go
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@ -0,0 +1,22 @@
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// Package define ...
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//
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// Description : define ...
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//
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// Author : go_developer@163.com<白茶清欢>
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//
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// Date : 2025-10-13 11:22
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package define
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import "git.zhangdeman.cn/zhangdeman/op_type"
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// BaseValueResult 基础类型转换结果
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type BaseValueResult[BaseType op_type.BaseType] struct {
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Value BaseType `json:"result"` // 转换结果
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Err error `json:"err"` // 错误信息
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}
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// BaseValuePtrResult 基础类型指针转换结果
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type BaseValuePtrResult[BaseType op_type.BaseType] struct {
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Value *BaseType `json:"result"` // 转换结果
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Err error `json:"err"` // 错误信息
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}
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9
go.mod
9
go.mod
@ -1,6 +1,6 @@
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module git.zhangdeman.cn/zhangdeman/wrapper
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module git.zhangdeman.cn/zhangdeman/wrapper
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go 1.23.0
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go 1.24.0
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require (
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require (
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git.zhangdeman.cn/zhangdeman/consts v0.0.0-20250916024308-d378e6c57772
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git.zhangdeman.cn/zhangdeman/consts v0.0.0-20250916024308-d378e6c57772
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@ -8,6 +8,7 @@ require (
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git.zhangdeman.cn/zhangdeman/serialize v0.0.0-20250504055908-8d68e6106ea9
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git.zhangdeman.cn/zhangdeman/serialize v0.0.0-20250504055908-8d68e6106ea9
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git.zhangdeman.cn/zhangdeman/util v0.0.0-20240618042405-6ee2c904644e
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git.zhangdeman.cn/zhangdeman/util v0.0.0-20240618042405-6ee2c904644e
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github.com/axgle/mahonia v0.0.0-20180208002826-3358181d7394
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github.com/axgle/mahonia v0.0.0-20180208002826-3358181d7394
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github.com/smartystreets/goconvey v1.8.1
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github.com/spaolacci/murmur3 v1.1.0
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github.com/spaolacci/murmur3 v1.1.0
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github.com/stretchr/testify v1.11.1
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github.com/stretchr/testify v1.11.1
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github.com/tidwall/gjson v1.18.0
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github.com/tidwall/gjson v1.18.0
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@ -17,11 +18,17 @@ require (
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github.com/BurntSushi/toml v1.5.0 // indirect
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github.com/BurntSushi/toml v1.5.0 // indirect
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github.com/davecgh/go-spew v1.1.1 // indirect
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github.com/davecgh/go-spew v1.1.1 // indirect
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github.com/go-ini/ini v1.67.0 // indirect
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github.com/go-ini/ini v1.67.0 // indirect
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github.com/gopherjs/gopherjs v1.17.2 // indirect
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github.com/jtolds/gls v4.20.0+incompatible // indirect
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github.com/mitchellh/go-homedir v1.1.0 // indirect
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github.com/mitchellh/go-homedir v1.1.0 // indirect
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github.com/mozillazg/go-pinyin v0.20.0 // indirect
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github.com/mozillazg/go-pinyin v0.20.0 // indirect
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github.com/pmezard/go-difflib v1.0.0 // indirect
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github.com/pmezard/go-difflib v1.0.0 // indirect
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github.com/sbabiv/xml2map v1.2.1 // indirect
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github.com/sbabiv/xml2map v1.2.1 // indirect
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github.com/smarty/assertions v1.15.0 // indirect
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github.com/tidwall/match v1.2.0 // indirect
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github.com/tidwall/match v1.2.0 // indirect
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github.com/tidwall/pretty v1.2.1 // indirect
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github.com/tidwall/pretty v1.2.1 // indirect
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golang.org/x/mod v0.9.0 // indirect
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golang.org/x/sys v0.6.0 // indirect
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golang.org/x/tools v0.7.0 // indirect
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gopkg.in/yaml.v3 v3.0.1 // indirect
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gopkg.in/yaml.v3 v3.0.1 // indirect
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)
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)
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8
go.sum
8
go.sum
@ -34,8 +34,6 @@ github.com/smartystreets/goconvey v1.8.1 h1:qGjIddxOk4grTu9JPOU31tVfq3cNdBlNa5sS
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github.com/smartystreets/goconvey v1.8.1/go.mod h1:+/u4qLyY6x1jReYOp7GOM2FSt8aP9CzCZL03bI28W60=
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github.com/smartystreets/goconvey v1.8.1/go.mod h1:+/u4qLyY6x1jReYOp7GOM2FSt8aP9CzCZL03bI28W60=
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github.com/spaolacci/murmur3 v1.1.0 h1:7c1g84S4BPRrfL5Xrdp6fOJ206sU9y293DDHaoy0bLI=
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github.com/spaolacci/murmur3 v1.1.0 h1:7c1g84S4BPRrfL5Xrdp6fOJ206sU9y293DDHaoy0bLI=
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github.com/spaolacci/murmur3 v1.1.0/go.mod h1:JwIasOWyU6f++ZhiEuf87xNszmSA2myDM2Kzu9HwQUA=
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github.com/spaolacci/murmur3 v1.1.0/go.mod h1:JwIasOWyU6f++ZhiEuf87xNszmSA2myDM2Kzu9HwQUA=
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github.com/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg=
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github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
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github.com/stretchr/testify v1.11.1 h1:7s2iGBzp5EwR7/aIZr8ao5+dra3wiQyKjjFuvgVKu7U=
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github.com/stretchr/testify v1.11.1 h1:7s2iGBzp5EwR7/aIZr8ao5+dra3wiQyKjjFuvgVKu7U=
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github.com/stretchr/testify v1.11.1/go.mod h1:wZwfW3scLgRK+23gO65QZefKpKQRnfz6sD981Nm4B6U=
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github.com/stretchr/testify v1.11.1/go.mod h1:wZwfW3scLgRK+23gO65QZefKpKQRnfz6sD981Nm4B6U=
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github.com/tidwall/gjson v1.18.0 h1:FIDeeyB800efLX89e5a8Y0BNH+LOngJyGrIWxG2FKQY=
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github.com/tidwall/gjson v1.18.0 h1:FIDeeyB800efLX89e5a8Y0BNH+LOngJyGrIWxG2FKQY=
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@ -46,6 +44,12 @@ github.com/tidwall/match v1.2.0/go.mod h1:eRSPERbgtNPcGhD8UCthc6PmLEQXEWd3PRB5JT
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github.com/tidwall/pretty v1.2.0/go.mod h1:ITEVvHYasfjBbM0u2Pg8T2nJnzm8xPwvNhhsoaGGjNU=
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github.com/tidwall/pretty v1.2.0/go.mod h1:ITEVvHYasfjBbM0u2Pg8T2nJnzm8xPwvNhhsoaGGjNU=
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github.com/tidwall/pretty v1.2.1 h1:qjsOFOWWQl+N3RsoF5/ssm1pHmJJwhjlSbZ51I6wMl4=
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github.com/tidwall/pretty v1.2.1 h1:qjsOFOWWQl+N3RsoF5/ssm1pHmJJwhjlSbZ51I6wMl4=
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github.com/tidwall/pretty v1.2.1/go.mod h1:ITEVvHYasfjBbM0u2Pg8T2nJnzm8xPwvNhhsoaGGjNU=
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github.com/tidwall/pretty v1.2.1/go.mod h1:ITEVvHYasfjBbM0u2Pg8T2nJnzm8xPwvNhhsoaGGjNU=
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golang.org/x/mod v0.9.0 h1:KENHtAZL2y3NLMYZeHY9DW8HW8V+kQyJsY/V9JlKvCs=
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golang.org/x/mod v0.9.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
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golang.org/x/sys v0.6.0 h1:MVltZSvRTcU2ljQOhs94SXPftV6DCNnZViHeQps87pQ=
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golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
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golang.org/x/tools v0.7.0 h1:W4OVu8VVOaIO0yzWMNdepAulS7YfoS3Zabrm8DOXXU4=
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golang.org/x/tools v0.7.0/go.mod h1:4pg6aUX35JBAogB10C9AtvVL+qowtN4pT3CGSQex14s=
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gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
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gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
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gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
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gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
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gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
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gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
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@ -22,11 +22,11 @@ func TestMap_Exist(t *testing.T) {
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func TestMap_IsNil(t *testing.T) {
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func TestMap_IsNil(t *testing.T) {
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var (
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var (
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m Map
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m Map
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m1 *Map
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//m1 *Map
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)
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)
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fmt.Println(m.Set("a", 1))
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fmt.Println(m.Set("a", 1))
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fmt.Println(m.IsNil(), m1.IsNil())
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//fmt.Println(m.IsNil(), m1.IsNil())
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}
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}
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func TestMap_IsMasher(t *testing.T) {
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func TestMap_IsMasher(t *testing.T) {
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50
op_string/base.go
Normal file
50
op_string/base.go
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// Package op_string ...
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//
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// Description : op_string ...
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//
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// Author : go_developer@163.com<白茶清欢>
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//
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// Date : 2025-10-13 11:18
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package op_string
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import (
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"git.zhangdeman.cn/zhangdeman/op_type"
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"git.zhangdeman.cn/zhangdeman/wrapper/define"
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"git.zhangdeman.cn/zhangdeman/wrapper/tool"
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)
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// ToBaseValue 转换为基础数据类型
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func ToBaseValue[BaseType op_type.BaseType](str string) define.BaseValueResult[BaseType] {
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var (
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err error
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target BaseType
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)
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if err = tool.ConvertAssign(&target, str); nil != err {
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return define.BaseValueResult[BaseType]{
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Value: target,
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Err: err,
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}
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}
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return define.BaseValueResult[BaseType]{
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Value: target,
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Err: err,
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}
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}
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// ToBaseValuePtr 转换为基础数据类型指针
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func ToBaseValuePtr[BaseType op_type.BaseType](str string) define.BaseValuePtrResult[BaseType] {
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var (
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err error
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target BaseType
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)
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|
if err = tool.ConvertAssign(&target, str); nil != err {
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return define.BaseValuePtrResult[BaseType]{
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Value: nil,
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|
Err: err,
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|
}
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|
}
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return define.BaseValuePtrResult[BaseType]{
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Value: &target,
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Err: err,
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|
}
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|
}
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32
op_string/base_test.go
Normal file
32
op_string/base_test.go
Normal file
@ -0,0 +1,32 @@
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// Package op_string ...
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//
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// Description : op_string ...
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|
//
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|
// Author : go_developer@163.com<白茶清欢>
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|
//
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// Date : 2025-10-13 11:28
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|
package op_string
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import (
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|
"reflect"
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"testing"
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|
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. "github.com/smartystreets/goconvey/convey"
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|
)
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|
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func TestToBaseValue(t *testing.T) {
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Convey("测试ToBaseValue - uint64 转换成功", t, func() {
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res := ToBaseValue[uint64]("12345")
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So(res.Err, ShouldBeNil)
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|
So(res.Value, ShouldEqual, uint64(12345))
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|
So(reflect.TypeOf(res.Value).Kind(), ShouldEqual, reflect.Uint64)
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|
So(reflect.TypeOf(res.Value).Kind(), ShouldNotEqual, reflect.Uint32)
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|
})
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|
Convey("测试ToBaseValue - uint64 转换失败", t, func() {
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|
res := ToBaseValue[uint64]("s12345")
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|
So(res.Err, ShouldNotBeNil)
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|
So(res.Value, ShouldEqual, 0)
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|
So(reflect.TypeOf(res.Value).Kind(), ShouldEqual, reflect.Uint64)
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|
So(reflect.TypeOf(res.Value).Kind(), ShouldNotEqual, reflect.Uint32)
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|
})
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|
}
|
394
tool/convert.go
Normal file
394
tool/convert.go
Normal file
@ -0,0 +1,394 @@
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|
// Package tool ...
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|
//
|
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|
// Description : 任意类型之间的相互转换
|
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|
//
|
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|
// Author : go_developer@163.com<白茶清欢>
|
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|
//
|
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|
// Date : 2021-02-23 10:23 下午
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|
package tool
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|
|
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|
/*
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|
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。
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|
|
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|
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。
|
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|
|
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|
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:
|
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|
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|
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。
|
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|
|
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|
Author : zhangdeman001@ke.com<白茶清欢>
|
||||||
|
|
||||||
|
*/
|
||||||
|
import (
|
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|
"errors"
|
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|
"fmt"
|
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|
"reflect"
|
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|
"strconv"
|
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|
"time"
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|
)
|
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|
|
||||||
|
// RawBytes is a byte slice that holds a reference to memory owned by
|
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|
// the database itself. After a Scan into a RawBytes, the slice is only
|
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|
// valid until the next call to Next, Scan, or Close.
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|
type RawBytes []byte
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|
|
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|
var errNilPtr = errors.New("destination pointer is nil") // embedded in descriptive error
|
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|
|
||||||
|
// ConvertAssign ...
|
||||||
|
// convertAssign copies to dest the value in src, converting it if possible.
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|
// An error is returned if the copy would result in loss of information.
|
||||||
|
// dest should be a pointer type.
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|
func ConvertAssign(dest, src any) error {
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|
// Common cases, without reflect.
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|
switch s := src.(type) {
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|
case string:
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|
switch d := dest.(type) {
|
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|
case *string:
|
||||||
|
if d == nil {
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|
return errNilPtr
|
||||||
|
}
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|
*d = s
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||||||
|
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
|
||||||
|
}
|
Reference in New Issue
Block a user