report #07

after a long time i spend on this feature it is completed !
finally the generated code can be in multiple line with different variable declaration and use for other function's input !
+ use a stack for adding, sorting and editing the generated code !
+ automatically sort the variable definition that used in edited function (node) [ all of the variable that use as a parameter must define before the function we use ] !
+ automatically sort the edited input node in code stack !
* it is the first step of going to multiple output function ( node ) like Fresnel !
this multiple code line generating by variable is mostly recommended for a software like this and now i achieved it with a lots of trying and polishing !

hop to see new features soon !