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[gforth] #line directive?

From: Josh Grams
Subject: [gforth] #line directive?
Date: Sun, 24 Jul 2011 21:10:33 -0400
User-agent: Mutt/1.5.18 (2008-05-17)

I have been doing a bit of literate programming, and so of course then I
want gforth to report errors relative to the original source and not the
generated files.  After a bit of poking around in the source, I came up
with the following (which is easily wrapped in a parsing version that
handles the C #line syntax):

        : >sourcefile ( u.line# c-addr u -- )
                2dup included? 0= if 2dup add-included-file then
                loadfilename 2!  1- loadline ! ;

The first line is there because the functions in source.fs work with an
index into included-files rather than the actual filename string.  Are
there other gotchas that I need to watch out for?


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