Re: [jdt-core-dev] How to obtain line and/or column from parsed java sou

[Jayaprakash Arthanareeswaran <jarthana@xxxxxxxxxx>]

Did you try this:

unit.getLineNumber(methodDeclaration.getStartPosition())

Where unit is the CompilationUnit containing
the method declaration?

Regards,
Jay



From:      
 Carlos Andrade <carlosviansi@xxxxxxxxx>
To:      
 jdt-core-dev@xxxxxxxxxxx
Date:      
 08/17/2012 02:34 AM
Subject:    
   [jdt-core-dev]
How to obtain line and/or column from parsed java source from Eclipse JDT
Parser from all nodes?
Sent by:    
   jdt-core-dev-bounces@xxxxxxxxxxx

---

Dears,

I've been playing for quite a while now with
ASTs and was trying to get the line and column information associated to
a given node parsed on this plugin from eclipse. According to the documented
api here I
found that the method getStartPosition() can
give me the position on the characters of the file that was parsed, but
this is not what I wanted.
I went on the CompilationUnit
class api documentation to find
out the methods getLineNumber(int
position) and getColumnNumber(int
position) which from my understanding
can do the trick. the position paramater
is nothing less than what the getStartPosition() method
returns, by doing node.getStartPosition().
Now, the problem is the two methods that
get line and column on source file doesn't seems to be available for all
nodes. For instance, the method
declaration nodes don't have them!
How can I get such information on all the
tree? I know this is not impossible since I was able to use parsers for
other languages that for every ast node had a line and
column associated with it. In fact, I was able to do that with javaparser which is
one of them for java, since the class contains attributes for line and
column hardcoded. Seeing Eclipse JDT seemed to me much more robust to me
and being there for quite a while, I would be surprised that such information
would not be possible to acquire.
An exact replica of this question was posted
on stack overflow (http://stackoverflow.com/questions/11911185/how-to-obtain-line-and-or-column-from-parsed-java-source-from-eclipse-jdt-parser)
by me few days ago but to my surprise no reply was offered.
I very much appreciate your time on helping
me on this question.
Thank you.

Carlos Andrade
http://carlosandrade.co
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