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Passing Arguments [message #756360]

Sat, 12 November 2011 11:26

Bahad?r KIN

Messages: 3
Registered: November 2011

Junior Member

Hi;

I am working on a DSL on my Senior Project. In my senior proect, i m trying to define a language which can express protocols and it's source code are in a git repo(git://github.com/bhdrkn/Protocol-Definition-Language.git). I want to pass argument to allready defined function. To make it simple let say i want to define a grammer like that which is almost same in my senior project's grammer;

[DEFINITIONS]
Argument name
[/DEFINITIONS]
[FUNCTIONS]
function myFirstFunction(Argument arg0)
[/FUNCTIONS]
[CALLS]
call myFirstFunction(name)
[/CALLS]

In order to do that i define this;


FUNCFile:
defines = Defines
functions = Functions
calls = Calls;

Defines:
'[DEFINITIONS]'
definitions+=Define*
'[/DEFINITIONS]';

Define:
    name=ID param=ID;

Functions:
'[FUNCTIONS]'
functions+=Function*
'[/FUNCTIONS]' ;

Function:
'function' name=ID '(' (args+=Argument)* ')';

Argument:
    keyword=[Define] name=ID;

Calls:
'[CALLS]'
calls+=Call*
'[/CALLS]' ;

Call:
'call' name=[Function];

I'm stuck at calling a function and passing a argument to it. I try many other things but all of them failed. I read other messages about argument passing. But i still have no solution.

I need help

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Re: Passing Arguments [message #756363 is a reply to message #756360]

Sat, 12 November 2011 11:39

Christian Dietrich

Messages: 13769
Registered: July 2009

Senior Member

Call:
'call' name=[Function] '(' defres+=DefRef* ')';

DefRef:
def=[Define];

Please not: you reference Defines in your case not by "name" but by "param"

=> You have to change IQualifiedNameProvider to return the param of a Define as its qualifiedname
+ you will need a validator to check type and length of the DefRefs

Update:

are you sure you refernce defines by name and by param? if yes you do not have to change the IQualifiedNameProvider but the DefaultResourceDescriptionStrategy
to "export" Defines by "name" and by "param"

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Blog : https://www.dietrich-it.de

[Updated on: Sat, 12 November 2011 12:03]

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Re: Passing Arguments [message #756458 is a reply to message #756363]

Sun, 13 November 2011 16:23

Bahad?r KIN

Messages: 3
Registered: November 2011

Junior Member

Christian Dietrich wrote on Sat, 12 November 2011 06:39

Call:
'call' name=[Function] '(' defres+=DefRef* ')';

DefRef:
def=[Define];

Please not: you reference Defines in your case not by "name" but by "param"

=> You have to change IQualifiedNameProvider to return the param of a Define as its qualifiedname
+ you will need a validator to check type and length of the DefRefs

Update:

are you sure you refernce defines by name and by param? if yes you do not have to change the IQualifiedNameProvider but the DefaultResourceDescriptionStrategy
to "export" Defines by "name" and by "param"

Thanks for your reply.
I tried something like that but it does not sufficient for me.
How to bind "function"'s Argument and "call"'s defres?
I want to bind "function"'s argument and "call"'s deferes.
I will genereta java classes from it.

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Re: Passing Arguments [message #756459 is a reply to message #756458]

Sun, 13 November 2011 16:25

Christian Dietrich

Messages: 13769
Registered: July 2009

Senior Member

hi, i dont understand your problem, can you elaborate a bit? what do you mean with "bind"?

~Christian

Need professional support for Xtext, Xpand, EMF?
Go to: https://www.itemis.com/en/it-services/methods-and-tools/xtext
Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

[Updated on: Sun, 13 November 2011 16:32]

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Re: Passing Arguments [message #756466 is a reply to message #756459]

Sun, 13 November 2011 18:16

Bahad?r KIN

Messages: 3
Registered: November 2011

Junior Member

Christian Dietrich wrote on Sun, 13 November 2011 11:25

hi, i dont understand your problem, can you elaborate a bit? what do you mean with "bind"?

~Christian

Sorry. I now get it. I will look for both IQualifiedNameProvider and a Validator.
And thanks for your time.

[Updated on: Sun, 13 November 2011 18:22]

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Re: Passing Arguments [message #756468 is a reply to message #756466]

Sun, 13 November 2011 18:24

Christian Dietrich

Messages: 13769
Registered: July 2009

Senior Member

Hi,

this is usually never !!! done in the grammar but always using a semantic validator. Wink

as i said in my first post: Quote:

you will need a validator to check type and length of the DefRefs

~Christian

Need professional support for Xtext, Xpand, EMF?
Go to: https://www.itemis.com/en/it-services/methods-and-tools/xtext
Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

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