pa_bounds syntax extension
                  ==========================

What it provides: 
----------------
The default behavior of out-of-bounds array, string or bigarray accesses 
is to raise the Invalid_argument exception, with no information on where
the faulty access was attempted.
This Camlp4 module provides a special syntax which allows the illegal 
accesses to be reported accurately, by indicating the location
in the source code. The same exception, Invalid_argument, is raised, but
its argument is a string which contains that information.

The syntax:
----------
Replace the dot (.) by the number sign (#), e.g.:

    native             extension
    a.(i)              a#(i)
    a.(i) <- e         a#(i) <- e
    s.[i]              s#[i]
    s.[i] <- c         s#[i] <- c
    big.{i,j}          big#{i,j}
    big.{i,j} <- x     big#{i,j} <- x

It should also work with the revised syntax, where ":=" replaces "<-".

Options:
-------

-native
  The native behavior can be restored without changing the program by
  passing the -native option to the preprocessor. For unsafe access 
  without bound checking, this option must be used in addition to the
  -unsafe option that can be passed to the compiler (ocamlopt or ocamlc).

Installation:
------------
Install Findlib and P4ck, and then install it from P4ck.
Alternatively, you can compile the extension as follows:
  camlp4o -o ocamlc -c \
         -pp 'camlp4o pa_extend.cmo q_MLast.cmo -loc _loc' \
         -I +camlp4 pa_bounds.ml

See http://www.ocaml-tutorial.org/compiling_ocaml_projects for 
information on how to compile programs that use Camlp4 extensions.


License:
-------

Copyright (c) 2006 Martin Jambon <martin_jambon@emailuser.net>
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
   notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
   notice, this list of conditions and the following disclaimer in the
   documentation and/or other materials provided with the distribution.
3. The name of the author may not be used to endorse or promote products
   derived from this software without specific prior written permission.

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