comp.lang.eiffel Google Group

The Eiffel Compiler tecomp version 0.3 released

2008-08-30T02:45:01Z

Version 0.3 of "The Eiffel Compiler" tecomp has been released.
The Eiffel Compiler works on Unix and Windows environments.
Tecomp is a command line compiler for the Eiffel language. It
compiles
the Eiffel source code into an internal representation and executes
it
in its virtual machine. In its simplest configuration it works like

The Eiffel Compiler tecomp version 0.3 released

2008-08-30T02:41:53Z

Re: Eiffel interpreter available

2008-08-18T12:53:08Z

On Aug 18, 6:38 am, Ulrich Windl <Ulrich.Wi...@RZ.Uni-Regensbur g.DE>
wrote:
clearly not like BASIC. Under the hood it is compilation. Tecomp has a
parser which converts the Eiffel code into some intermediate
representation (a more compact form than ASTs) and then a validator,
which validates the code. So if you write big programs in Eiffel, you

Re: Eiffel interpreter available

2008-08-18T11:38:46Z

Can you elaborate on "immediately"?: You mean once the system has been
compiled into some intermediate code. I doubt you can run Eiffel code like
BASIC... ;-)

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2008-08-18T08:19:42Z

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Re: Eiffel interpreter available

2008-08-17T23:47:56Z

Not necessarily. I can firstly parse the whole system (i.e. convert
the Eiffel source code to some internal representation), then start at
the root procedure and validate (i.e. semantic analysis) only used
features. Thats a kind of "lazy mode". I.e. you do not touch "dead
code". As far as I know, SmartEiffel works in that manner.

Re: The Eiffel Compiler tecomp 0.2 released

2008-08-17T16:13:46Z

The main question for me is: What is the most appropriate granularity
for doing C to native compilation? The feature, the class, the type,
the cluster or ...?
The best incremental strategy can be reached if you use the feature as
its finest granularity. So if you change a feature, you need to
recompile only the used features which depend on that feature. Ideally

Re: Eiffel interpreter available

2008-08-16T22:53:36Z

Yes, as i said maybe i did it wrong. There are multiple
ways you can do it. The easiest is just to duplicate AST
(abstract syntax tree) and then you don't need any special
code for generics. It works fine but as i said it does use
a lot of memory.
If you the substitution on demand and just have to check

Re: The Eiffel Compiler tecomp 0.2 released

2008-08-16T22:39:57Z

Well i read the page, the manual and the examples.
Installing the system didn't work for me. Neither 2.2 nor 2.3
worked out of the box on my WinXP 64/MSVC 8.0 system.
And i didn't spend time into resolving the problem.
But of course you can use gcc. The main problem with eiffels
full system analysis and compiling to C strategy is not solved

comp.lang.eiffel licence

2008-08-14T22:15:59Z

[link]

Re: Eiffel interpreter available

2008-08-14T12:44:33Z

Hello Lothar,
I don't have the problem you mentioned. Tecomp only has one internal
representation per class. For each type I have some lean additional
information (e.g. describing layout information for the actual
generics). Also the routines have just some lean additional
information related to the actual generics. With that the virtual

Re: Eiffel interpreter available

2008-08-13T12:52:59Z

Yes. Maybe i used a wrong algorithm but it is still the only thing
not working well for my system. If you don't want to use excessive
O(n*n) memory like gobos gec (which already make people think about
using a 64bit system) then you need a clever algorithm which is not
simply duplicating complete ASTs.

Re: Eiffel interpreter available

2008-08-13T11:08:30Z

What do you mean by the "template system", Lothar? Do you mean
generics?
-- Peter

Re: Eiffel interpreter available

2008-08-12T12:21:06Z

A little hint from me after writting my own eiffel compiler (not
finished).
The hardest thing was the template system, you should focus on this
first.
Object Orientation, even multiple inheritence is much easier to
implement.
In both phases: semantik validation and code generation.
Once you have done this i will give it a try.

Eiffel interpreter available

2008-08-11T23:14:24Z

Most of Eiffel compilers act like usual compilers. They compile to C
and then to native or directly to native machine code.
The Eiffel Compiler tecomp has chosen a different strategy. It its
simplest configuration it works like an interpreter. Just feed the
Eiffel source code and you get it executed immediately (see