[news.eclipse.tools.hibachi] Re: Java based AST for Ada (Google Summer o

["Tom GROSMAN" <grosman@xxxxxxxx>]

Hello Saliya,

Part of the work of generating the AST is already completed. We currently 
use an Ada language parser generated by ANTLR (www.antlr.org) to parse Ada 
source files into a generic AST. What we need is to convert this AST into an 
Ada-centric API that can be more easily used by tool builders. We want to 
use the AST API of JDT and CDT as a basis for the Hibachi AST, but modifying 
the API to provide constructs specific to Ada. For example, instead of an 
interface called IImportDeclaration, we would probably have something like 
IWithClause, IUseClause, and IUseTypeClause.

Like JDT and CDT, we would also like to provide an "AST rewrite" API that 
supports creating or modifying Ada source files given a set of AST changes.

We would like the AST to be able to handle both Ada2005 and Ada95 code. JDT 
uses the same framework for pre-1.5 and post-1.5 JVMs, but provides a switch 
to the AST generator to determine which JVM is being used. We'd like to do 
something similar for Hibachi.

There are not currently any plans to include an AST Viewer, but the student 
would be welcome to create one for testing purposes at least.

Our belief is that (1) adapting the ANTLR-generated AST to an Ada-specific 
AST, and (2) creating the AST rewrite framework, would likely be enough to 
keep a student busy for the allocated time. However, if there is time left 
over after finishing these tasks, startingt to implement tools using the AST 
would be feasible.

Tom

"Saliya Ekanayake" <esaliya@xxxxxxxxx> a écrit dans le message de news: 
efb7f3365f87e6b6d52ba9001d2f04fb$1@xxxxxxxxxxxxxxxxxx
> Hi,
>
> I am a final year undergraduate of the Department of Computer Science & 
> Engineering of University of Moratuwa. I am interested in implementing an 
> AST for Ada language under Hibachi project for this year's Google Summer 
> of Code. I have undertaken the subject compiler theory at university and 
> have implemented a JavaScript pretty printer based on PLY and a JavaScript 
> lexical analyzer in C. I have also developed Axis TCP Monitor 
> (http://ws.apache.org/commons/tcpmon/) as a plug-in for Eclipse. So I 
> believe I am capable of working with this project based on my experience 
> with Eclipse and ASTs.
>
> Thus I like to know more information regarding this project and any 
> relevant information is highly appreciated as well.
>
> Thanks in advance,
> Saliya Ekanayake