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How to implement function calls [message #673242]

Mon, 23 May 2011 01:15

Lucy Sakhnenko

Messages: 41
Registered: March 2011

Member

Hi!

I would like to have a language that supports something like:

MyDataType myVariable

myVariable.function()

This "function()" depends on the type of myVariable. In this example myVariable is of MyDataType type.

I don't have a deep knowledge of Xtext.

What way would you guys recommend me to implement this?

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Re: How to implement function calls [message #673251 is a reply to message #673242]

Mon, 23 May 2011 02:47

Lex

Messages: 4
Registered: May 2011

Junior Member

Write the grammar for your language.

Write a compiler (generate code for an existing language such as Java) or an interpreter (evaluate/execute EMF model directly); in both cases you will be working with the EMF model created by Xtext from parsing code written in your language.

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Re: How to implement function calls [message #673324 is a reply to message #673242]

Mon, 23 May 2011 09:06

Luong

Messages: 8
Registered: March 2011

Junior Member

Do you mean "support" syntactically?

Then I think that you have to write a dot notation in your grammar and customize eventually the scope provider.

In the forum there are old posts for the dot notation like here or here.

[Updated on: Mon, 23 May 2011 09:07]

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Re: How to implement function calls [message #673343 is a reply to message #673242]

Mon, 23 May 2011 09:51

Alexander Nittka

Messages: 1193
Registered: July 2009

Senior Member

Hi,

this is something that is excessively used in Xtend2. So you might want to have a look at its grammar and infrastructure (I guess that will be a bit overwhelming, though).

Another recent post dealing with this question is this one. The grammar and scoping samples may give you an idea how to start.

Alex

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Re: How to implement function calls [message #674097 is a reply to message #673343]

Wed, 25 May 2011 20:03

Lucy Sakhnenko

Messages: 41
Registered: March 2011

Member

Thank you all for your help.

I would like to have a look to complex grammars to learn more. Where I can download the Xtent2 source code? or maybe another grammar I can have a look at?

Thank you!

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