From: nobu.nokada@...
Date: 2004-05-25T18:15:17+09:00
Subject: Re: RCR? change Proc#inspect to show start..end lines

Hi,

At Tue, 25 May 2004 05:39:16 +0900,
Joel VanderWerf wrote in [ruby-talk:101253]:
> It would be easier to extract the entire code block without doing 
> parsing if Proc#inspect returned a _range_ of lines:
> 
> #<Proc:0x401c6d54@file.rb:3..5>

Unfortunately, there's no more room for it.

> I thought that eval-ing __LINE__ against the proc's binding might give 
> the last line of the proc's definition, but actually the results are 
> surprisingly inconsistent:

I think this has no bad side effects.


Index: eval.c
===================================================================
RCS file: /cvs/ruby/src/ruby/eval.c,v
retrieving revision 1.665
diff -u -2 -p -r1.665 eval.c
--- eval.c	25 May 2004 02:54:21 -0000	1.665
+++ eval.c	25 May 2004 08:49:56 -0000
@@ -2932,4 +2932,5 @@ rb_eval(self, n)
 		PUSH_ITER(ITER_PRE);
 		if (nd_type(node) == NODE_ITER) {
+		    ruby_frame->node = node;
 		    result = rb_eval(self, node->nd_iter);
 		}
@@ -6043,8 +6044,8 @@ eval(self, src, scope, file, line)
 	old_wrapper = ruby_wrapper;
 	ruby_wrapper = data->wrapper;
-	if ((file == 0 || (line == 1 && strcmp(file, "(eval)") == 0)) && data->body) {
-	    file = data->body->nd_file;
+	if (file == 0 || (line == 1 && strcmp(file, "(eval)") == 0)) {
+	    file = data->frame.node->nd_file;
 	    if (!file) file = "__builtin__";
-	    line = nd_line(data->body);
+	    line = nd_line(data->frame.node);
 	}
 


-- 
Nobu Nakada