Structs

09-19-2008, 02:54 PM

Given:

JASS:

library itembin initializer init requires Table

//========================================================================
    globals
        private Table itemlookup    // table containing all the information of any particular item
                                    // to be looked up when a unit aquires/loses an item to
                                    // appropriately give / remove stat bonuses, buffs, etc.
    endglobals
    
    struct itementry
        public integer rawitem      =   0       // itemID (rawcode) entered into itemlookup
        public integer maxstack     =   0       // maximum size item stacks up to (0 = non stackable)
        public integer rawabil      =   0       // abilID (rawcode) that bonus item gives
        public integer dataA1       =   0       // data value for ability
        public string name          =   ""      // name of item (for appearances only)
        public string iico          =   ""      // path for item/ability art
        public string uhot          =   ""      // hotkey
        public string utub          =   ""      // extended tooltip
        
        //================================================================
        // constructEntry takes the values of struct itementry's member data and creates a 
        // new item and new ability object, then places those into the first open spot on
        // the table.
        //================================================================
        static method Create takes integer rawitem, integer rawabil, integer dataA1, integer maxstack returns itementry
            local itementry r=itementry.allocate()
                set r.rawitem = rawitem
                set r.rawabil = rawabil
                set r.dataA1 = dataA1
                set r.maxstack = maxstack
            return r
            //! external ObjectMerger w3a Sca1 hpea anam "My Chaos" ansf (Peasant) achd 0 Cha1 1 hpea
        endmethod
        
        static method Insert takes nothing returns nothing
            local integer a = 0
            loop
                exitwhen not(itemlookup.exists(a))
                set a = a + 1
            endloop
            // set itemlookup[a] = .this ??
        endmethod
    endstruct
    
    
    
    function init takes nothing returns nothing
        set itemlookup = Table.create()
    endfunction
endlibrary

I'm wanting to store the entire struct inside the table (so that it may be looked up later). The problem I'm having is in my Insert function, which is called like:

JASS:

itementry foo = itementry.Create('ratc', 'Alt9', 50, 0) //(Claws of attack +50)
foo.Insert()

But I'm not sure how to reference the itementry that was used to call the .Insert function. I could just build another temporary struct inside the insert function based off of the current member data, but that would be ineffecient.

09-20-2008, 05:24 AM	#2
Ammorth	don't use static method and then use "this" to access the calling struct.

09-20-2008, 05:45 AM	#3
WNxCryptic	Why not static methods? All those methods are supposed to be accessible from outside the struct.

09-20-2008, 06:32 AM

Ammorth

which normal methods do. Private methods are only able to be used in a struct. A static method makes it so it doesn't take a struct as an argument (or "calling struct"

JASS:

struct MyStruct
    method basic takes nothing returns nothing
    // ...
    endmethod

    static method static takes nothing returns nothing
    // ...
    endmethod
endstruct

function test takes nothing returns nothing
    local MyStruct s = MyStruct.create() // create is a static method
    call s.basic() // non-static, the s struct is the calling struct (hence becomes the variable "this" in the method "basic"
    call MyStruct.static() // since its static, it doesn't take a calling struct and therefore no "this" variable is allowed to be used in the method