"constant arrays"

04-19-2008, 01:14 AM

I am feeling an absurd need to implement this:

JASS:

globals


   constant integer array SUMMONID=['U000','U001','U002']

endglobals

later:

JASS:

   set SUMMONID[2] = 3 //error
   
   call BJDebugMsg(I2S(SUMMONID.size()) ) // "3"

   call BJDebugMsg(I2S(SUMMONID[2]) ) // whatever 'U001' translates to.

If anybody else would find it useful I might implement it for the next version.

04-19-2008, 01:16 AM	#2
Rising_Dusk	Uhm, yes. I was asking for this functionality ages ago in that jasshelper thread, it would be tremendously useful.

04-19-2008, 01:48 AM	#3
PandaMine	Definitely yes, could we even form constant matrix's this way?

04-19-2008, 02:01 AM	#4
Rising_Dusk	I hate the syntax you've got though, I'm used to the engineering programming languages I use at work. JASS: set u = [1 2 3; 4 5 6] That would be sexy as hell if we could get matricies like above that worked correctly, but it might be a pain in the ass on your end. If not, at least consider the following implicit array allocation as a possibility: JASS: set u = [1 2 3]

04-19-2008, 02:02 AM	#5
TheSecretArts	You know what would be better, multidimensional arrays! Or matrices, either works. edit: didnt see other ppl talking about matrices.

04-19-2008, 02:04 AM

Rising_Dusk

Quote:

Originally Posted by TheSecretArts

You know what would be better, multidimensional arrays!
Or matrices, either works.

You do realize that a multidimensional array is basically a struct, right? Matricies would use the struct interface internally, but oftentimes for me using a matrix is so much more convenient than defining and working with a struct.

04-19-2008, 02:05 AM

Vexorian

Quote:

That would be sexy as hell if we could get matricies like above that worked correctly, but it might be a pain in the ass on your end. If not, at least consider the following implicit array allocation as a possibility:

I don't need that stuff, and it would not help me with what I want, I want to allow people an easy way to type arrays on jesp spells not some sort of macro to avoid typing some assigments

I wouldn't hold my breath for multiple dimensions.

04-19-2008, 02:06 AM	#8
TheSecretArts	alas, if I feel up to it, I may just make a matrix system...

04-19-2008, 02:06 AM

Rising_Dusk

Quote:

Originally Posted by Vexorian

I actually just wrote a system in the past few hours that would've benefited tremendously from matrix allocation, but you 'da boss.

Quote:

Originally Posted by TheSecretArts

alas, if I feel up to it, I may just make a matrix system...

It's not a system for it that I want, it's the syntax.

04-19-2008, 02:27 AM	#10
TheSecretArts	I wish, and I doubt its possible, to create a dynamic array with the size of a local...

04-19-2008, 06:16 AM	#11
ADOLF	how all this will be is made? if the index of a file cannot be learned at moment of compilation is it will be simple a array, which is initialized in a stream from main ()? then what for restriction, what it would be impossible to change it? or it - is simple many constants?

04-19-2008, 11:53 AM

#12

Toadcop

ADOLF i will explain what it's...
Vex doing now a hero for the contest and he have a need to do that stuff. and cause he likes high lvl languages etc. he had the idea to implement it into vJass now he have created this thread to proof what he's right.

+ yes it's interesting preproccesor will gen global vars or 1 array ?
if vars so it maybe usefull. (arrays will be in truth very limited usefull.)
it's kind a "just another coding candy"

04-19-2008, 12:31 PM	#13
PandaMine	It would be REALLY good that along with constant arrays there would be matrices/matrix's. The syntax for constant arrays can stay the exact same, just add an extra feature for matrices/matrix, its not that hard

04-19-2008, 02:12 PM

#14

Vexorian

So, I will just thinking of stuff, and I have no reason whatsoever not to implement this:

JASS:

set anything = [1,2,3,a,f(3),x[4]]

Becomes:

JASS:

set anything[0]=1
set anything[1]=2
set anything[2]=3
set anything[4]=a
set anything[5]=f(3)
set anything[6]=x[4]

Where "anything" is any object that support the []= operator (global arrays, dynamic arrays, structs with overloaded []=, struct array members, ...)

Also

JASS:

globals
    integer array x=[0,1,2,5,4]
endglobals

becomes:

JASS:

globals
    integer array x
endglobals

function somethingcalledbeforeanythingelse takes nothing returns nothing
    set x[0]=0
    set x[1]=1
    set x[2]=2
    set x[3]=5
    set x[4]=4
endfunction

Similary:

JASS:

globals
    constant integer array y=[0,1,2,5,4]
endglobals

Works just like array x, only that you can't change its contents in any function and y.size returns 5.

Just notice that

JASS:

globals
    integer array A=[1,2,3]
    integer array B=[2,3,4]
    constant integer array C=[2,3,4]
endglobals

function tt takes nothing returns nothing
    set A=B //syntax error
    set A=C //works
endfunction

Mostly because A=B can't be compiled intelligently without converting these normal arrays into "lists" which makes everything too complicated and imho it is overkill.

Eventually, I think it could be made recursive:

JASS:

type arr extends integer array[3]
type brr extends arr array[3]

function k takes nothing returns nothing
 local brr B=brr.create()
    set B[0]=arr.create()
    set B[1]=arr.create()
    set B[2]=arr.create()

    set B=[[0,1,2],[0,0,4],[1,2,3]]
endfunction

becomes:

JASS:

   set B[0]=[0,1,2]
   set B[1]=[0,0,4]
   set B[2]=[1,2,2]

which then becomes:

JASS:

   set B[0][0]=0
   set B[0][1]=1
   set B[0][2]=2
   set B[1][0]=0
   set B[1][1]=0
   set B[1][2]=4
   set B[2][0]=1
   set B[2][1]=2
   set B[2][2]=2

And then is parsed with dynamic array stuff...

Toadcop: you need to calm down else there are going to be consequences. Either way I don't really need this for hero contest or anything in particular, just checking old spells it seemed like something like this would make configuration easier. I am not sure I'll be able to make this addition before the deadline either..

04-19-2008, 04:20 PM	#15
Rising_Dusk	That last part interests me the most, though it would be more handy if it could be called like this: JASS: set B[0,0] = 0 set B[3,2] = 2 Also, possible preloading capability? JASS: set C[0,:] = 0 Would set all values in the 0th row of C to 0.