Eclipse Community Forums: TMF (Xtext) » Problems when creating ANSI-C like grammar

Help

Home

Home » Modeling » TMF (Xtext) » Problems when creating ANSI-C like grammar

Show: Today's Messages :: Show Polls :: Message Navigator

Problems when creating ANSI-C like grammar [message #1391163]

Mon, 30 June 2014 14:27

St. K.

Messages: 6
Registered: June 2014

Junior Member

I am working on a project where we are trying to create an IDE and some analysis tools for a scripting language that is very close to ANSI-C.

For this project I have taken the ANTLR-grammar I found here
https:// github.com/antlr/examples-v3/blob/master/C/C/C.g (sorry, I cannot post links)
and converted it to serve Ctl (the name of the scripting language) .
I had to do some minor adaptions, but in general it should be VERY close to the C grammar.

Some specifics about the language:
- there are no structs, enums or typedefs
- the language supports exceptions
- there are no pointers
- there are &-parameters in function definitions ("out"-parameters)

When I am trying to compile the language I run into
"java.lang.OutOfMemoryError: GC overhead limit exceeded"
exceptions and also
error(10): internal error: org.antlr.tool.Grammar.createLookaheadDFA(Grammar.java:1279): could not even do k=1 for decision 39; reason: timed out (>10000ms)

Does somebody have an idea how I can debug this or somehow change to stop the errors from happening?

I am looking forward to your replies!

Thank you,
Stefan

PS: I am using the following options in my the MWE2 workflow:
options

antlrParam = "-Xconversiontimeout" antlrParam = "10000"
    options = {
        backtrack = true
    	memoize = true
    	kAsString = "2"
    }

Attachment: Ctl.xtext
(Size: 28.93KB, Downloaded 72 times)

Report message to a moderator

Re: Problems when creating ANSI-C like grammar [message #1391171 is a reply to message #1391163]

Mon, 30 June 2014 14:41

St. K.

Messages: 6
Registered: June 2014

Junior Member

sorry, I just saw that I duplicated this...
If somebody could close/delete please

[Updated on: Mon, 30 June 2014 14:42]

Report message to a moderator

Previous Topic:	Problems when creating ANSI-C like grammar
Next Topic:	Open an XtextEditor and reveal a given EObject

Goto Forum:

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

]

Current Time: Thu Feb 20 15:32:58 GMT 2020

.:: Contact :: Home ::.

Breadcrumbs

Sign up to our Newsletter