vJass generated Code in JassHelper

[edo494]

So, if you are interested in how some code is generated from vJass to Jass, or from Zinc to vJass to Jass maybe, you may find this interesting.

This is also very useful to see the inlined output as well and I discovered this just today

Code:

library ShowJHOutput
    
    //! textmacro SHOW_JH_CODE
    
        private function a takes code c returns nothing
            call Filter(c)
        endfunction
        
        private function b takes nothing returns nothing
            
        endfunction
        
        private function c takes nothing returns nothing
            call a(function b)
        endfunction
    
    //! endtextmacro
    
endlibrary

Basically, if you want to see the exact Jass code inside war3map.j without opening it with some mpq editor, you will place //! runtextmacro SHOW_JH_CODE(), and compile.

How this works: Basically, when you pass code to function, and try to pass that local(function's argument) into function, that expect return type of boolean it will not pop error even if the function returns nothing(exploited by http://www.hiveworkshop.com/forums/jass-resources-412/snippet-registerplayerunitevent-203338/) but when JassHelper's optimizer kicks in, it first optimizes and then checks for the function's return type.

Basically, the code up there will compile with Debug Mode on, but if you disable Debug Mode, it will pop error with the fully made code with inlined stuff and all the goodies and that is because a(function f) is inlined into Filter(function f), but clearly function f doesnt return boolean, but nothing

 

[Troll-Brain]

Or just open the text file output...j text file generated by jasshelper in the subfolder "log" if you use the JNGP.

Btw i think i remember if you make a syntax error, such as write a line only with "a" it still shows the jass generated code ?

 

[edo494]

yes, but it generates code before optimizer runs through the code

 

[Malhorne]

Or just do this :

scope Test
    //DO WHATEVER YOU WANT
endscope
a

And the 'a' or anything will do parse error after the vJASS changes

 

[edo494]

your method will not generate post-optimization phase tho, mine will

neither does

globals
    a b
endglobals

generate post-optimization phase code

 

[Malhorne]

Why do you want to see optimizations ?

 

[edo494]

maybe one would like to see if their function gets inlined

I dont know, there is also the way that Troll-Brain said(checking the output.j), and this is just a thing I found out and though sharing wouldnt be bad(the same with call BJDebugMsg("thistype"))

 

[Malhorne]

Ah yes you can see inline thingy !
You're right nice one.
But you can also access with the war3map.j