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path: root/generateAppend.go
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// Copyright 2017-2025 WIT.COM Inc. All rights reserved.
// Use of this source code is governed by the GPL 3.0

package main

import (
	"fmt"
	"io"
)

// generates Append()

// I like these functions the best.
func (msg *MsgName) simpleAppend(w io.Writer, FRUIT, APPLES, APPLE string) string {
	LOCK := msg.getLockname("x")

	funcdef := "func (x *" + FRUIT + ") Append(y *" + APPLE + ") *" + APPLE

	// log.Printf("\t\t(x %s) APPEND(%s)\n", FRUIT, APPLE)
	// append -- no check at all
	fmt.Fprintln(w, "// a Append() shortcut (that does Clone() with a mutex) notsure if it really works")
	fmt.Fprintln(w, funcdef, "{")
	fmt.Fprintln(w, "	"+LOCK+".Lock()")
	fmt.Fprintln(w, "	defer "+LOCK+".Unlock()")
	fmt.Fprintln(w, "")
	fmt.Fprintln(w, "	z := proto.Clone(y).(*"+APPLE+")")
	fmt.Fprintln(w, "	x."+APPLES+" = append(x."+APPLES+", z)")
	fmt.Fprintln(w, "")
	fmt.Fprintln(w, "	return z")
	fmt.Fprintln(w, "}")
	fmt.Fprintln(w, "")

	return funcdef
}

// Unique Append. rejects Append() if value is already defined
// compares the field 'COLOR' in the STRUCT with VARNAME
// that's not the right description above, but whatever, you get the idea
func (msg *MsgName) simpleAppendBy(w io.Writer, STRUCT, FUNCNAME, STRUCTVAR, VARNAME, VARTYPE string) string {
	LOCK := msg.getLockname("x")

	funcdef := "func (x *" + STRUCT + ") " + FUNCNAME + "(y *" + VARTYPE + ") bool"

	fmt.Fprintln(w, funcdef, "{")
	fmt.Fprintln(w, "	"+LOCK+".Lock()")
	fmt.Fprintln(w, "	defer "+LOCK+".Unlock()")
	fmt.Fprintln(w, "")
	fmt.Fprintln(w, "	for _, p := range x."+STRUCTVAR+" {")
	fmt.Fprintln(w, "		if p."+VARNAME+" == y."+VARNAME+" {")
	fmt.Fprintln(w, "			return false")
	fmt.Fprintln(w, "		}")
	fmt.Fprintln(w, "	}")
	fmt.Fprintln(w, "")
	fmt.Fprintln(w, "	x."+STRUCTVAR+" = append(x."+STRUCTVAR+", proto.Clone(y).(*"+VARTYPE+"))")
	fmt.Fprintln(w, "	return true")
	fmt.Fprintln(w, "}")
	fmt.Fprintln(w, "")

	return funcdef
}

// I like these functions the best.
func (msg *MsgName) simpleClone(w io.Writer, FRUIT, APPLES, APPLE string) string {
	LOCK := msg.getLockname("x")

	funcdef := "func (x *" + FRUIT + ") Clone(y *" + APPLE + ") *" + APPLE

	// log.Printf("\t\t(x %s) CLONE(%s)\n", FRUIT, APPLE)
	// append -- no check at all
	fmt.Fprintln(w, "// a Clone() shortcut (with a mutex). notsure if it really works")
	fmt.Fprintln(w, funcdef, "{")
	fmt.Fprintln(w, "	"+LOCK+".Lock()")
	fmt.Fprintln(w, "	defer "+LOCK+".Unlock()")
	fmt.Fprintln(w, "")
	fmt.Fprintln(w, "	z := proto.Clone(y).(*"+APPLE+")")
	fmt.Fprintln(w, "	x."+APPLES+" = append(x."+APPLES+", z)")
	fmt.Fprintln(w, "")
	fmt.Fprintln(w, "	return z")
	fmt.Fprintln(w, "}")
	fmt.Fprintln(w, "")

	return funcdef
}

// Unique Append. rejects Append() if value is already defined
// compares the field 'COLOR' in the STRUCT with VARNAME
// that's not the right description above, but whatever, you get the idea
func (msg *MsgName) simpleCloneBy(w io.Writer, STRUCT, FUNCNAME, STRUCTVAR, VARNAME, VARTYPE string) string {
	LOCK := msg.getLockname("x")

	funcdef := "func (x *" + STRUCT + ") " + FUNCNAME + "(y *" + VARTYPE + ") bool"

	fmt.Fprintln(w, funcdef, "{")
	fmt.Fprintln(w, "	"+LOCK+".Lock()")
	fmt.Fprintln(w, "	defer "+LOCK+".Unlock()")
	fmt.Fprintln(w, "")
	fmt.Fprintln(w, "	for _, p := range x."+STRUCTVAR+" {")
	fmt.Fprintln(w, "		if p."+VARNAME+" == y."+VARNAME+" {")
	fmt.Fprintln(w, "			return false")
	fmt.Fprintln(w, "		}")
	fmt.Fprintln(w, "	}")
	fmt.Fprintln(w, "")
	fmt.Fprintln(w, "	x."+STRUCTVAR+" = append(x."+STRUCTVAR+", proto.Clone(y).(*"+VARTYPE+"))")
	fmt.Fprintln(w, "	return true")
	fmt.Fprintln(w, "}")
	fmt.Fprintln(w, "")

	return funcdef
}

/* FIX THSE and call them Import() ?
func (msg *MsgName) appendUnique(w io.Writer, FRUIT, APPLES, APPLE string, COLORS []string) {
        LOCK := msg.getLockname("x")

        fmt.Fprintln(w, "// enforces "+APPLE+" is unique in "+FRUIT+"."+APPLES)
        fmt.Fprintln(w, "func (x *"+FRUIT+") AppendUnique(newP *"+APPLE+") bool {")
        fmt.Fprintln(w, "       "+LOCK+".Lock()")
        fmt.Fprintln(w, "       defer "+LOCK+".Unlock()")
        fmt.Fprintln(w, "")
        fmt.Fprintln(w, "       for _, p := range x."+APPLES+" {")
        for _, COLOR := range COLORS {
                fmt.Fprintln(w, "               if p."+COLOR+" == newP."+COLOR+" {")
                fmt.Fprintln(w, "                       return false")
                fmt.Fprintln(w, "               }")
        }
        fmt.Fprintln(w, "       }")
        fmt.Fprintln(w, "")
        fmt.Fprintln(w, "       x."+APPLES+" = append(x."+APPLES+", newP)")
        fmt.Fprintln(w, "       return true")
        fmt.Fprintln(w, "}")
        fmt.Fprintln(w, "")
}

func (msg *MsgName) appendUniqueCOLOR(w io.Writer, FRUIT, APPLES, APPLE, COLOR string) {
        LOCK := msg.getLockname("x")

        fmt.Fprintln(w, "// enforces "+APPLE+"."+COLOR+" is unique in "+FRUIT+"."+APPLES)
        fmt.Fprintln(w, "func (x *"+FRUIT+") AppendUnique"+COLOR+"(newP *"+APPLE+") bool {")
        fmt.Fprintln(w, "       "+LOCK+".Lock()")
        fmt.Fprintln(w, "       defer "+LOCK+".Unlock()")
        fmt.Fprintln(w, "")
        fmt.Fprintln(w, "       for _, p := range x."+APPLES+" {")
        fmt.Fprintln(w, "               if p."+COLOR+" == newP."+COLOR+" {")
        fmt.Fprintln(w, "                       return false")
        fmt.Fprintln(w, "               }")
        fmt.Fprintln(w, "       }")
        fmt.Fprintln(w, "")
        fmt.Fprintln(w, "       x."+APPLES+" = append(x."+APPLES+", newP)")
        fmt.Fprintln(w, "       return true")
        fmt.Fprintln(w, "}")
        fmt.Fprintln(w, "")
}
*/