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package main
import (
"fmt"
"io"
)
func headerComment(w io.Writer) {
fmt.Fprintln(w, "")
fmt.Fprintln(w, "// this file was autogenerated with autogenpb")
fmt.Fprintln(w, "//")
fmt.Fprintln(w, "// you might be able to use it on simple, strictly defined protobuf files")
fmt.Fprintln(w, "//")
fmt.Fprintln(w, "// go install go.wit.com/apps/autogenpb@latest")
fmt.Fprintln(w, "")
}
func header(w io.Writer, names map[string]string) {
fmt.Fprintln(w, "package "+names["package"])
headerComment(w)
fmt.Fprintln(w, "import (")
fmt.Fprintln(w, " \"fmt\"")
fmt.Fprintln(w, " \"os\"")
fmt.Fprintln(w, " \"sort\"")
fmt.Fprintln(w, " \"sync\"")
fmt.Fprintln(w, ")")
fmt.Fprintln(w, "")
}
func syncLock(w io.Writer, names map[string]string) {
fmt.Fprintln(w, "// bad global lock until I figure out some other plan")
fmt.Fprintln(w, "// redo/fix protoc-gen-go 1.35 and do it there?")
fmt.Fprintln(w, "// sync.RWMutex or sync.Mutex?")
fmt.Fprintln(w, "var "+names["lock"]+" sync.RWMutex")
fmt.Fprintln(w, "")
}
func iterTop(w io.Writer, names map[string]string) {
fmt.Fprintln(w, "type "+names["Base"]+"Iterator struct {")
fmt.Fprintln(w, " sync.RWMutex")
fmt.Fprintln(w, "")
fmt.Fprintln(w, " packs []*"+names["Base"])
fmt.Fprintln(w, " index int")
fmt.Fprintln(w, "}")
fmt.Fprintln(w, "")
fmt.Fprintln(w, "// New"+names["Base"]+"Iterator initializes a new iterator.")
fmt.Fprintln(w, "func New"+names["Base"]+"Iterator(packs []*"+names["Base"]+") *"+names["Base"]+"Iterator {")
fmt.Fprintln(w, " return &"+names["Base"]+"Iterator{packs: packs}")
fmt.Fprintln(w, "}")
fmt.Fprintln(w, "")
fmt.Fprintln(w, "// Scan moves to the next element and returns false if there are no more packs.")
fmt.Fprintln(w, "// Use Scan() in a loop, similar to a while loop")
fmt.Fprintln(w, "//")
fmt.Fprintln(w, "// for iterator.Scan() ")
fmt.Fprintln(w, "// d := iterator.Next(")
fmt.Fprintln(w, "// fmt.Println(\"found UUID:\", d.Uuid")
fmt.Fprintln(w, "// }")
fmt.Fprintln(w, "func (it *"+names["Base"]+"Iterator) Scan() bool {")
fmt.Fprintln(w, " if it.index >= len(it.packs) {")
fmt.Fprintln(w, " return false")
fmt.Fprintln(w, " }")
fmt.Fprintln(w, " it.index++")
fmt.Fprintln(w, " return true")
fmt.Fprintln(w, "}")
fmt.Fprintln(w, "")
}
func iterNext(w io.Writer, names map[string]string) {
fmt.Fprintln(w, "// Next() returns the next thing in the array")
fmt.Fprintln(w, "func (it *"+names["Base"]+"Iterator) Next() *"+names["Base"]+" {")
fmt.Fprintln(w, " if it.packs[it.index-1] == nil {")
fmt.Fprintln(w, " for i, d := range it.packs {")
fmt.Fprintln(w, " fmt.Println(\"i =\", i, d)")
fmt.Fprintln(w, " }")
fmt.Fprintln(w, " fmt.Println(\"protobuf autogenpb sort error len =\", len(it.packs))")
fmt.Fprintln(w, " fmt.Println(\"protobuf autogenpb sort error next == nil\", it.index, it.index-1)")
fmt.Fprintln(w, " os.Exit(-1)")
fmt.Fprintln(w, " }")
fmt.Fprintln(w, " return it.packs[it.index-1]")
fmt.Fprintln(w, "}")
fmt.Fprintln(w, "")
}
func iterSort(w io.Writer, names map[string]string) {
fmt.Fprintln(w, "func (all *"+names["Bases"]+") All() *"+names["Base"]+"Iterator {")
fmt.Fprintln(w, " "+names["base"]+"Pointers := all.selectAll"+names["Base"]+"()")
fmt.Fprintln(w, "")
fmt.Fprintln(w, " iterator := New"+names["Base"]+"Iterator("+names["base"]+"Pointers)")
fmt.Fprintln(w, " return iterator")
fmt.Fprintln(w, "}")
fmt.Fprintln(w, "")
fmt.Fprintln(w, "func (all *"+names["Bases"]+") Sort"+names["sortBy"]+"() *"+names["Base"]+"Iterator {")
fmt.Fprintln(w, " packs := all.selectAll"+names["Base"]+"()")
fmt.Fprintln(w, "")
fmt.Fprintln(w, " sort.Sort("+names["Base"]+""+names["sortBy"]+"(packs))")
fmt.Fprintln(w, "")
fmt.Fprintln(w, " iterator := New"+names["Base"]+"Iterator(packs)")
fmt.Fprintln(w, " return iterator")
fmt.Fprintln(w, "}")
fmt.Fprintln(w, "")
fmt.Fprintln(w, "func (all *"+names["Bases"]+") Len() int {")
fmt.Fprintln(w, " "+names["lock"]+".RLock()")
fmt.Fprintln(w, " defer "+names["lock"]+".RUnlock()")
fmt.Fprintln(w, "")
fmt.Fprintln(w, " return len(all."+names["Bases"]+")")
fmt.Fprintln(w, "}")
fmt.Fprintln(w, "")
}
func iterEnd(w io.Writer, names map[string]string) {
fmt.Fprintln(w, "type "+names["Base"]+""+names["sortBy"]+" []*"+names["Base"]+"")
fmt.Fprintln(w, "")
fmt.Fprintln(w, "func (a "+names["Base"]+""+names["sortBy"]+") Len() int { return len(a) }")
fmt.Fprintln(w, "func (a "+names["Base"]+""+names["sortBy"]+") Less(i, j int) bool { return a[i]."+names["sortKey"]+" < a[j]."+names["sortKey"]+" }")
fmt.Fprintln(w, "func (a "+names["Base"]+""+names["sortBy"]+") Swap(i, j int) { a[i], a[j] = a[j], a[i] }")
fmt.Fprintln(w, "")
fmt.Fprintln(w, "// safely returns a slice of pointers to the "+names["Base"]+" protobufs")
fmt.Fprintln(w, "func (all *"+names["Bases"]+") selectAll"+names["Base"]+"() []*"+names["Base"]+" {")
fmt.Fprintln(w, " "+names["lock"]+".RLock()")
fmt.Fprintln(w, " defer "+names["lock"]+".RUnlock()")
fmt.Fprintln(w, "")
fmt.Fprintln(w, " // Create a new slice to hold pointers to each "+names["Base"]+"")
fmt.Fprintln(w, " var aStuff []*"+names["Base"]+"")
fmt.Fprintln(w, " aStuff = make([]*"+names["Base"]+", len(all."+names["Bases"]+"))")
fmt.Fprintln(w, " for i, p := range all."+names["Bases"]+" {")
fmt.Fprintln(w, " aStuff[i] = p // Copy pointers for safe iteration")
fmt.Fprintln(w, " }")
fmt.Fprintln(w, "")
fmt.Fprintln(w, " return aStuff")
fmt.Fprintln(w, "}")
fmt.Fprintln(w, "")
}
func iterAppend(w io.Writer, names map[string]string) {
if names["append"] == "" {
fmt.Fprintln(w, "// does not enforce any unique fields")
} else {
fmt.Fprintln(w, "// enforces "+names["append"]+" is unique")
}
if names["append"] == "" {
fmt.Fprintln(w, "func (all *"+names["Bases"]+") Append(newP *"+names["Base"]+") bool {")
} else {
// fmt.Fprintln(w, "func (all *"+names["Bases"]+") Append(newP *"+names["Base"]+") bool { // todo: make unique name here")
fmt.Fprintln(w, "func (all *"+names["Bases"]+") AppendUnique"+names["append"]+"(newP *"+names["Base"]+") bool {")
}
fmt.Fprintln(w, " "+names["lock"]+".Lock()")
fmt.Fprintln(w, " defer "+names["lock"]+".Unlock()")
fmt.Fprintln(w, "")
if names["append"] != "" {
fmt.Fprintln(w, " for _, p := range all."+names["Bases"]+" {")
fmt.Fprintln(w, " if p."+names["append"]+" == newP."+names["append"]+" {")
fmt.Fprintln(w, " return false")
fmt.Fprintln(w, " }")
fmt.Fprintln(w, " }")
fmt.Fprintln(w, "")
}
fmt.Fprintln(w, " all."+names["Bases"]+" = append(all."+names["Bases"]+", newP)")
fmt.Fprintln(w, " return true")
fmt.Fprintln(w, "}")
fmt.Fprintln(w, "")
}
func iterReplace(w io.Writer, names map[string]string) {
if names["append"] == "" {
// can't continue without a key field
}
fmt.Fprintln(w, "// enforces "+names["append"]+" is unique")
fmt.Fprintln(w, "func (all *"+names["Bases"]+") Replace"+names["append"]+"(newP *"+names["Base"]+") bool { // todo: make unique name here")
fmt.Fprintln(w, " "+names["lock"]+".Lock()")
fmt.Fprintln(w, " defer "+names["lock"]+".Unlock()")
fmt.Fprintln(w, "")
fmt.Fprintln(w, " for _, p := range all."+names["Bases"]+" {")
fmt.Fprintln(w, " if p."+names["append"]+" == newP."+names["append"]+" {")
fmt.Fprintln(w, " return false")
fmt.Fprintln(w, " }")
fmt.Fprintln(w, " }")
fmt.Fprintln(w, "")
fmt.Fprintln(w, " all."+names["Bases"]+" = append(all."+names["Bases"]+", newP)")
fmt.Fprintln(w, " return true")
fmt.Fprintln(w, "}")
fmt.Fprintln(w, "")
}
func iterDelete(w io.Writer, names map[string]string) {
fmt.Fprintln(w, "func (all *"+names["Bases"]+") DeleteBy"+names["append"]+"(s string) *"+names["Base"]+" {")
fmt.Fprintln(w, " "+names["lock"]+".Lock()")
fmt.Fprintln(w, " defer "+names["lock"]+".Unlock()")
fmt.Fprintln(w, "")
fmt.Fprintln(w, " var newr "+names["Base"])
fmt.Fprintln(w, "")
fmt.Fprintln(w, " for i, _ := range all."+names["Bases"]+" {")
fmt.Fprintln(w, " if all."+names["Bases"]+"[i]."+names["append"]+" == s {")
fmt.Fprintln(w, " newr = *all."+names["Bases"]+"[i]")
fmt.Fprintln(w, " all."+names["Bases"]+"[i] = all."+names["Bases"]+"[len(all."+names["Bases"]+")-1]")
fmt.Fprintln(w, " all."+names["Bases"]+" = all."+names["Bases"]+"[:len(all."+names["Bases"]+")-1]")
fmt.Fprintln(w, " return &newr")
fmt.Fprintln(w, " }")
fmt.Fprintln(w, " }")
fmt.Fprintln(w, " return nil")
fmt.Fprintln(w, "}")
fmt.Fprintln(w, "")
}
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