//***************************************************************************
//*
//*     <lib> Allocate v1    by AppleSheep
//*
//***************************************************************************

#guard AS_Allocate

    private static integer Allocate_Index = 0
    private static integer Allocate_Line  = 0
    private static integer Allocate_List  []

    static thistype create () {
        thistype this = .Allocate_Line
            if this == 0
                this = ++.Allocate_Index
            else
                .Allocate_Line = .Allocate_List[this]
            endif
            // other
            .Allocate_List[this] = -1
        return this
    }

    nothing destroy () {
        if this == null then
            return
        endif
        // other
        if .Allocate_List[this] == -1
            set .Allocate_List[this] = .Allocate_Line
            set .Allocate_Line = this
        endif
    }