/
main.go
83 lines (75 loc) · 1.86 KB
/
main.go
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package main
import (
"bytes"
"io/ioutil"
"log"
"os"
"strings"
)
const (
pkgName = "package segmenttree"
baseFilePath = "" // you base file
)
//var lengthFunction = `func (s Int64Set) Len() int {
// return len(s)
//}`
func main() {
f, err := os.Open(baseFilePath)
if err != nil {
panic(err)
}
fileData, err := ioutil.ReadAll(f)
if err != nil {
panic(err)
}
w := new(bytes.Buffer)
startPos := strings.Index(string(fileData), pkgName)
w.WriteString(string(fileData)[startPos : startPos+len(pkgName)])
ts := []string{"Float32", "Float64", "Int32", "Int16", "Int", "Uint64", "Uint32", "Uint16",
"Uint", "String", "Int64"} // all types need to be converted
for _, upper := range ts {
lower := strings.ToLower(upper)
data := string(fileData)
// Remove header.
data = data[startPos+len(pkgName):]
// Remove the special case.
//data = strings.Replace(data, lengthFunction, "", -1)
// Common cases.
data = strings.Replace(data, "interface{}", lower, -1)
data = strings.Replace(data, "Interface", upper, -1)
if inSlice(lowerSlice(ts), lower) {
data = strings.Replace(data, "length "+lower, "length int64", 1)
}
// Add the special case.
//data = data + strings.Replace(lengthFunction, "Int64Set", upper+"Set", 1)
w.WriteString(data)
w.WriteString("\r\n")
}
//var t = w.String()
//fmt.Println(t)
//out, err := format.Source(w.Bytes())
//if err != nil {
// log.Print(err)
// //panic(err)
//}
if err := ioutil.WriteFile("types.go", w.Bytes(), 0660); err != nil {
//panic(err)
log.Print(err)
}
log.Printf("只用于辅助生成代码,需要手动调整一些错误语法")
}
func lowerSlice(s []string) []string {
n := make([]string, len(s))
for i, v := range s {
n[i] = strings.ToLower(v)
}
return n
}
func inSlice(s []string, val string) bool {
for _, v := range s {
if v == val {
return true
}
}
return false
}