#!/usr/bin/perl

##

## Copyright (C) 2002-2008, Marcelo E. Magallon <mmagallo[]debian org=""></mmagallo[]debian>

## Copyright (C) 2002-2008, Milan Ikits <milan ikits[]ieee="" org=""></milan>

##

## This program is distributed under the terms and conditions of the GNU

## General Public License Version 2 as published by the Free Software

## Foundation or, at your option, any later version.

use strict;

use warnings;

do 'bin/make.pl';

# token

sub make_define($$)

{

    return "#define $_[0] $_[1]"

}

# type declaration

sub make_type($$)

{

    return "@_;"

}

# function pointer type declaration

sub make_pfn_type($%)

{

    our $api;

    return join(' ', "typedef", $_[1]->{rtype},

        "($api * PFN" . (uc $_[0]) . "PROC)",

        "(" . $_[1]->{parms} . ")") . ";";

}

# function name alias

sub make_pfn_alias($%)

{

    our $type;

    return join(" ", "#define", $_[0], $type . "EW_GET_FUN(" . prefixname($_[0]) . ")")

}

my @extlist = ();

my %extensions = ();

our $api = shift;

our $type = shift;

if (@ARGV)

{

    @extlist = @ARGV;

	foreach my $ext (sort @extlist)

	{

		my ($extname, $exturl, $extstring, $types, $tokens, $functions, $exacts) = parse_ext($ext);

		make_separator($extname);

		print "#ifndef $extname\n#define $extname 1\n";

		output_tokens($tokens, \&make_define);

		output_types($types, \&make_type);

		output_exacts($exacts, \&make_exact);

		output_decls($functions, \&make_pfn_type);

		output_decls($functions, \&make_pfn_alias);

		my $extvar = $extname;

		$extvar =~ s/GL(X*)_/GL$1EW_/;

		print "\n#define $extvar " . $type . "EW_GET_VAR(" . prefix_varname($extvar) . ")\n";

		print "\n#endif /* $extname */\n\n";

	}

}