How does the jasshelper work

[Deleted member 219079]

What jasshelper actually does how did Vexorian make his own syntax. Could anybody do his own syntax if so what tools you'd need.

 

[Frotty]

Basically it's made out of a parser(with lexer) and then the translation to vanilla Jass.

JassHelper uses a very old version of the http://goldparser.org/ for pascal.

You can look into the source yourself, I would suggest cohadar's one tho, since in the original, the whole code is in one big file.

You could theoretically change the syntax slightly (based on vJass or ZinC) or just do it from scratch like here https://www.hiveworkshop.com/forums...e-wurstscript-wurst-jass-compiler-ide-238522/

The inner workings of JassHelper are mostly search&replace in many different compilerphases.
Structs in vJass are simple integers from 1-8191 that are used as index when referring to a struct.
e.g.

struct actor
    unit u
// Becomes:
unit array actor_u
// And
RemoveUnit(myStruct.u)
// Becomes:
RemoveUnit(actor_u[(int)myStruct])

When allocating a structinstance a free id is taken, e.g. from a Stack of free Ids.
When you destroy an instance, the id is put pack onto the stack and can be reused.

Due to the array-limit of 8191 possible indices you can have a maximum of 8190 instances at once (0 being equal no no instance or null) with using only one array.

 

[Deleted member 219079]

Ah your wurstscript is made from scratch, cool!

Did you make in eclipse or what?

 

[Frotty]

We used JDT Eclipse to write the Javacode, yes. The currently used Parser/Lexer is ANTLR 4

 

[Deleted member 219079]

I tried to google JDT Eclipse and there was a bunch of nerd stuff but no download link.

...So I have no idea how I can download and use JDT Eclipse, but it sounds cool, is there any tutorials?

 

[Frotty]

First Google-links leads to a big DownloadButton:

JDT is just the Java Version of Eclipse

Java is a programming language based on the JavaVM
http://www.oracle.com/technetwork/java/javase/downloads/index.html?ssSourceSiteId=otnjp

 

[Deleted member 219079]

Got it downloading, thanks.

Can eclipse compile stuff I make with it also?

 

[Frotty]

https://www.eclipse.org/downloads/d...ease/luna/R/eclipse-standard-luna-R-win32.zip

 

[Bannar]

Another Wurst follower :"D

 

[Deleted member 219079]

Another Wurst follower :"D

I like vJass. To be honest the indentation based syntax is not for me. But wurst is still nice project

 

[Frotty]

Luckily python is on the rise as beginner language, making ppl lose their fear about indention-based syntax.
Muahaha

Source: http://cacm.acm.org/blogs/blog-cacm...hing-language-at-top-us-universities/fulltext

 

[sethmachine]

Could anybody do his own syntax if so what tools you'd need.

The inner workings of JassHelper are mostly search&replace in many different compilerphases.

If you have JASS / vJASS files managed like an actual project (multiple .j files), you can add in your own pre-compiler phases with your favorite scripting language.

Luckily python is on the rise as beginner language

They use Java at my alma mater. Python is relegated to the NLP / computational linguistics courses, I believe because of NLTK (the Natural Language Toolkit), which is an amazing library written in Python, and also who wants to write a machine learning script or text processor in Java?

I use Python for adding additional keywords or syntax to vJASS. A Python script combs over all the files and basically does a search + replace. Relatively it's slow, though unless you have hundreds of files it shouldn't be that big of a problem.

This only works if you can write a script to process text files and you are not willing to modify the source of jasshelper and/or use Wurst. This would be the way to go if you don't have much of a background in programming / compiler theory / programming language theory, like me.

 

[Frotty]

And your reason for digging up this thread is?

 

[muzzel]

Aw crap, i just wanted to eat a cheese sandwich but i dont have any more cheese and its past 1 am :[

 

[Frotty]

Aw crap, i just wanted to eat a cheese sandwich but i dont have any more cheese and its past 1 am :[

Earlier today I ate a salad with tomatoes and garlic seasoning. But now it's gone.