298 lines
10 KiB
Go
298 lines
10 KiB
Go
package main
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import (
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"fmt"
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"io"
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)
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func (pf *File) syncLock(w io.Writer) {
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var LOCK string = pf.Bases.Lockname
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fmt.Fprintln(w, "// bad global lock until modifying the .pb.go file is tested")
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fmt.Fprintln(w, "// sync.RWMutex or sync.Mutex?")
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fmt.Fprintln(w, "var "+LOCK+" sync.RWMutex")
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fmt.Fprintln(w, "")
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}
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func (msg *MsgName) iterTop(w io.Writer) {
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var BASE string = msg.Name
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fmt.Fprintln(w, "type "+BASE+"Iterator struct {")
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fmt.Fprintln(w, " sync.RWMutex")
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fmt.Fprintln(w, "")
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fmt.Fprintln(w, " things []*"+BASE)
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fmt.Fprintln(w, " index int")
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fmt.Fprintln(w, "}")
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fmt.Fprintln(w, "")
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fmt.Fprintln(w, "// New"+BASE+"Iterator initializes a new iterator.")
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fmt.Fprintln(w, "func New"+BASE+"Iterator(things []*"+BASE+") *"+BASE+"Iterator {")
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fmt.Fprintln(w, " return &"+BASE+"Iterator{things: things}")
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fmt.Fprintln(w, "}")
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fmt.Fprintln(w, "")
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fmt.Fprintln(w, "// Scan moves to the next element and returns false if there are no more things.")
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fmt.Fprintln(w, "// Use Scan() in a loop, similar to a while loop")
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fmt.Fprintln(w, "//")
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fmt.Fprintln(w, "// for iterator.Scan() ")
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fmt.Fprintln(w, "// d := iterator.Next(")
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fmt.Fprintln(w, "// fmt.Println(\"found UUID:\", d.Uuid")
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fmt.Fprintln(w, "// }")
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fmt.Fprintln(w, "func (it *"+BASE+"Iterator) Scan() bool {")
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fmt.Fprintln(w, " if it.index >= len(it.things) {")
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fmt.Fprintln(w, " return false")
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fmt.Fprintln(w, " }")
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fmt.Fprintln(w, " it.index++")
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fmt.Fprintln(w, " return true")
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fmt.Fprintln(w, "}")
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fmt.Fprintln(w, "")
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}
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func (msg *MsgName) iterNext(w io.Writer) {
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var BASE string = msg.Name
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fmt.Fprintln(w, "// Next() returns the next thing in the array")
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fmt.Fprintln(w, "func (it *"+BASE+"Iterator) Next() *"+BASE+" {")
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fmt.Fprintln(w, " if it.things[it.index-1] == nil {")
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fmt.Fprintln(w, " for i, d := range it.things {")
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fmt.Fprintln(w, " fmt.Println(\"i =\", i, d)")
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fmt.Fprintln(w, " }")
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fmt.Fprintln(w, " }")
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fmt.Fprintln(w, " return it.things[it.index-1]")
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fmt.Fprintln(w, "}")
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fmt.Fprintln(w, "")
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}
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func (pf *File) iterAll(w io.Writer) {
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var BASES string = pf.Bases.Name
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var BASE string = pf.Base.Name
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var LOCK string = pf.Bases.Lockname
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fmt.Fprintln(w, "func (all *"+BASES+") All() *"+BASE+"Iterator {")
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fmt.Fprintln(w, " "+BASE+"Pointers := all.selectAll"+BASE+"()")
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fmt.Fprintln(w, "")
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fmt.Fprintln(w, " iterator := New"+BASE+"Iterator("+BASE+"Pointers)")
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fmt.Fprintln(w, " return iterator")
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fmt.Fprintln(w, "}")
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fmt.Fprintln(w, "")
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fmt.Fprintln(w, "func (all *"+BASES+") Len() int {")
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fmt.Fprintln(w, " "+LOCK+".RLock()")
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fmt.Fprintln(w, " defer "+LOCK+".RUnlock()")
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fmt.Fprintln(w, "")
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fmt.Fprintln(w, " return len(all."+BASES+")")
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fmt.Fprintln(w, "}")
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fmt.Fprintln(w, "")
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}
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func (pf *File) iterSortBy(w io.Writer) {
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var BASES string = pf.Bases.Name
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var BASE string = pf.Base.Name
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for _, SORT := range pf.Base.Sort {
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fmt.Fprintln(w, "func (all *"+BASES+") SortBy"+SORT+"() *"+BASE+"Iterator {")
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fmt.Fprintln(w, " things := all.selectAll"+BASE+"()")
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fmt.Fprintln(w, "")
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fmt.Fprintln(w, " sort.Sort("+BASE+""+SORT+"(things))")
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fmt.Fprintln(w, "")
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fmt.Fprintln(w, " iterator := New"+BASE+"Iterator(things)")
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fmt.Fprintln(w, " return iterator")
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fmt.Fprintln(w, "}")
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fmt.Fprintln(w, "")
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fmt.Fprintln(w, "type "+BASE+""+SORT+" []*"+BASE+"")
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fmt.Fprintln(w, "")
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fmt.Fprintln(w, "func (a "+BASE+""+SORT+") Len() int { return len(a) }")
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fmt.Fprintln(w, "func (a "+BASE+""+SORT+") Less(i, j int) bool { return a[i]."+SORT+" < a[j]."+SORT+" }")
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fmt.Fprintln(w, "func (a "+BASE+""+SORT+") Swap(i, j int) { a[i], a[j] = a[j], a[i] }")
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fmt.Fprintln(w, "")
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}
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}
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func (pf *File) iterSelect(w io.Writer) {
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var BASES string = pf.Bases.Name
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var BASE string = pf.Base.Name
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var LOCK string = pf.Bases.Lockname
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fmt.Fprintln(w, "// safely returns a slice of pointers to the "+BASE+" protobufs")
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fmt.Fprintln(w, "func (all *"+BASES+") selectAll"+BASE+"() []*"+BASE+" {")
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fmt.Fprintln(w, " "+LOCK+".RLock()")
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fmt.Fprintln(w, " defer "+LOCK+".RUnlock()")
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fmt.Fprintln(w, "")
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fmt.Fprintln(w, " // Create a new slice to hold pointers to each "+BASE+"")
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fmt.Fprintln(w, " var tmp []*"+BASE+"")
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fmt.Fprintln(w, " tmp = make([]*"+BASE+", len(all."+BASES+"))")
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fmt.Fprintln(w, " for i, p := range all."+BASES+" {")
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fmt.Fprintln(w, " tmp[i] = p // Copy pointers for safe iteration")
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fmt.Fprintln(w, " }")
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fmt.Fprintln(w, "")
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fmt.Fprintln(w, " return tmp")
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fmt.Fprintln(w, "}")
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}
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func iterAppend(w io.Writer, names map[string]string) {
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}
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func (pf *File) appendUnique(w io.Writer) {
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var MSG string = pf.Bases.Name
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var BASE string = pf.Base.Name
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var LOCK string = pf.Bases.Lockname
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if argv.Mutex {
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// use the mutex lock from the modified protoc.pb.go file
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LOCK = "all.Lock"
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} else {
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LOCK = pf.Bases.Lockname
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}
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// append -- no check at all
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fmt.Fprintln(w, "// just a simple Append() with no checking (but still uses the mutex lock)")
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fmt.Fprintln(w, "func (all *"+MSG+") Append(newP *"+BASE+") bool {")
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fmt.Fprintln(w, " "+LOCK+".RLock()")
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fmt.Fprintln(w, " defer "+LOCK+".RUnlock()")
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fmt.Fprintln(w, "")
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fmt.Fprintln(w, " all."+MSG+" = append(all."+MSG+", newP)")
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fmt.Fprintln(w, " return true")
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fmt.Fprintln(w, "}")
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fmt.Fprintln(w, "")
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// append for single keys
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for _, KEY := range pf.Base.Unique {
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fmt.Fprintln(w, "// enforces "+BASE+" is unique")
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fmt.Fprintln(w, "func (all *"+MSG+") AppendUnique"+KEY+"(newP *"+BASE+") bool {")
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fmt.Fprintln(w, " "+LOCK+".RLock()")
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fmt.Fprintln(w, " defer "+LOCK+".RUnlock()")
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fmt.Fprintln(w, "")
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fmt.Fprintln(w, " for _, p := range all."+MSG+" {")
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fmt.Fprintln(w, " if p."+KEY+" == newP."+KEY+" {")
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fmt.Fprintln(w, " return false")
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fmt.Fprintln(w, " }")
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fmt.Fprintln(w, " }")
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fmt.Fprintln(w, "")
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fmt.Fprintln(w, " all."+MSG+" = append(all."+MSG+", newP)")
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fmt.Fprintln(w, " return true")
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fmt.Fprintln(w, "}")
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fmt.Fprintln(w, "")
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}
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// append check for every key
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if len(pf.Base.Unique) == 0 {
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// there are no keys defined
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return
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}
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fmt.Fprintln(w, "// enforces "+BASE+" is unique")
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fmt.Fprintln(w, "func (all *"+MSG+") AppendUnique(newP *"+BASE+") bool {")
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fmt.Fprintln(w, " "+LOCK+".RLock()")
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fmt.Fprintln(w, " defer "+LOCK+".RUnlock()")
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fmt.Fprintln(w, "")
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fmt.Fprintln(w, " for _, p := range all."+MSG+" {")
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for _, KEY := range pf.Base.Unique {
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fmt.Fprintln(w, " if p."+KEY+" == newP."+KEY+" {")
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fmt.Fprintln(w, " return false")
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fmt.Fprintln(w, " }")
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}
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fmt.Fprintln(w, " }")
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fmt.Fprintln(w, "")
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fmt.Fprintln(w, " all."+MSG+" = append(all."+MSG+", newP)")
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fmt.Fprintln(w, " return true")
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fmt.Fprintln(w, "}")
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fmt.Fprintln(w, "")
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}
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func iterReplace(w io.Writer, names map[string]string) {
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if names["append"] == "" {
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// can't continue without a key field
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}
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fmt.Fprintln(w, "// enforces "+names["append"]+" is unique")
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fmt.Fprintln(w, "func (all *"+names["Bases"]+") Replace"+names["append"]+"(newP *"+names["Base"]+") bool { // todo: make unique name here")
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if sortmap["lock"] == "all" {
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fmt.Fprintln(w, " "+names["lock"]+".Lock.RLock()")
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fmt.Fprintln(w, " defer "+names["lock"]+".Lock.RUnlock()")
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} else {
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fmt.Fprintln(w, " "+names["lock"]+".RLock()")
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fmt.Fprintln(w, " defer "+names["lock"]+".RUnlock()")
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}
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fmt.Fprintln(w, "")
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fmt.Fprintln(w, " for _, p := range all."+names["Bases"]+" {")
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fmt.Fprintln(w, " if p."+names["append"]+" == newP."+names["append"]+" {")
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fmt.Fprintln(w, " return false")
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fmt.Fprintln(w, " }")
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fmt.Fprintln(w, " }")
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fmt.Fprintln(w, "")
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fmt.Fprintln(w, " all."+names["Bases"]+" = append(all."+names["Bases"]+", newP)")
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fmt.Fprintln(w, " return true")
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fmt.Fprintln(w, "}")
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fmt.Fprintln(w, "")
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}
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func (pf *File) iterDelete(w io.Writer) {
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var MSG string = pf.Bases.Name
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var LOCK string = pf.Bases.Lockname
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for _, KEY := range pf.Base.Sort {
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fmt.Fprintln(w, "func (all *"+MSG+") DeleteBy"+KEY+"(s string) bool {")
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fmt.Fprintln(w, " "+LOCK+".RLock()")
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fmt.Fprintln(w, " defer "+LOCK+".RUnlock()")
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fmt.Fprintln(w, "")
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fmt.Fprintln(w, " for i, _ := range all."+MSG+" {")
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fmt.Fprintln(w, " if all."+MSG+"[i]."+KEY+" == s {")
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fmt.Fprintln(w, " all."+MSG+"[i] = all."+MSG+"[len(all."+MSG+")-1]")
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fmt.Fprintln(w, " all."+MSG+" = all."+MSG+"[:len(all."+MSG+")-1]")
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fmt.Fprintln(w, " return true")
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fmt.Fprintln(w, " }")
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fmt.Fprintln(w, " }")
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fmt.Fprintln(w, " return false")
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fmt.Fprintln(w, "}")
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fmt.Fprintln(w, "")
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}
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}
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// this tries to return the deleted one but is wrong/gives warning if mutex lock is in struct
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func iterDeleteWithCopy(w io.Writer, names map[string]string) {
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fmt.Fprintln(w, "func (all *"+names["Bases"]+") DeleteBy"+names["append"]+"(s string) *"+names["Base"]+" {")
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if sortmap["lock"] == "all" {
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fmt.Fprintln(w, " "+names["lock"]+".Lock.RLock()")
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fmt.Fprintln(w, " defer "+names["lock"]+".Lock.RUnlock()")
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} else {
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fmt.Fprintln(w, " "+names["lock"]+".RLock()")
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fmt.Fprintln(w, " defer "+names["lock"]+".RUnlock()")
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}
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fmt.Fprintln(w, "")
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fmt.Fprintln(w, " var newr "+names["Base"])
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fmt.Fprintln(w, "")
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fmt.Fprintln(w, " for i, _ := range all."+names["Bases"]+" {")
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fmt.Fprintln(w, " if all."+names["Bases"]+"[i]."+names["append"]+" == s {")
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fmt.Fprintln(w, " newr = *all."+names["Bases"]+"[i]")
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fmt.Fprintln(w, " all."+names["Bases"]+"[i] = all."+names["Bases"]+"[len(all."+names["Bases"]+")-1]")
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fmt.Fprintln(w, " all."+names["Bases"]+" = all."+names["Bases"]+"[:len(all."+names["Bases"]+")-1]")
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fmt.Fprintln(w, " return &newr")
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fmt.Fprintln(w, " }")
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fmt.Fprintln(w, " }")
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fmt.Fprintln(w, " return nil")
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fmt.Fprintln(w, "}")
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fmt.Fprintln(w, "")
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}
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func iterFind(w io.Writer, names map[string]string) {
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fmt.Fprintln(w, "// find a dependancy by the go path")
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fmt.Fprintln(w, "func (all *"+names["Bases"]+") FindBy"+names["append"]+"(s string) *"+names["Base"]+" {")
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fmt.Fprintln(w, " if all == nil {")
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fmt.Fprintln(w, " return nil")
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fmt.Fprintln(w, " }")
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fmt.Fprintln(w, "")
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if sortmap["lock"] == "all" {
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fmt.Fprintln(w, " "+names["lock"]+".Lock.RLock()")
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fmt.Fprintln(w, " defer "+names["lock"]+".Lock.RUnlock()")
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} else {
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fmt.Fprintln(w, " "+names["lock"]+".RLock()")
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fmt.Fprintln(w, " defer "+names["lock"]+".RUnlock()")
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}
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fmt.Fprintln(w, "")
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fmt.Fprintln(w, " for i, _ := range all."+names["Bases"]+" {")
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fmt.Fprintln(w, " if all."+names["Bases"]+"[i]."+names["append"]+" == s {")
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fmt.Fprintln(w, " return all."+names["Bases"]+"[i]")
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fmt.Fprintln(w, " }")
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fmt.Fprintln(w, " }")
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fmt.Fprintln(w, " return nil")
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fmt.Fprintln(w, "}")
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fmt.Fprintln(w, "")
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}
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