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# generate-lua-exceptions: generate error handling code for Lua bindings
my $copyright = <<'END';
Copyright (C) 2003,2004,2006,2007,2008,2011,2012 Olly Betts
Copyright (C) 2007 Lemur Consulting Ltd
Copyright (C) 2007 Richard Boulton
Copyright (C) 2011 Xiaona Han
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
END
use strict;
use exception_data;
my @allclasses = (@baseclasses, @classes);
open FD, ">except.i" or die $!;
$copyright =~ s/^/ */mg;
print FD <<"EOF";
/** \@file
* \@brief Custom Lua exception handling.
*/
/* Warning: This file is generated by $0
* - do not modify directly!
*
$copyright */
%ignore Xapian::Error::Error(const Error&);
%include "xapian/error.h"
%{
namespace Xapian {
void handle_exception(lua_State* L) {
try {
throw;
EOF
for (reverse @allclasses) {
my ($class) = @{$_};
print FD <<"EOF";
} catch (const Xapian::$class &e) {
SWIG_NewPointerObj(L, (void *)new $class(e), SWIGTYPE_p_Xapian__$class, 1);
EOF
}
print FD <<'EOF';
} catch (const std::exception& e) {
lua_pushfstring(L, "std::exception: %s", e.what());
} catch (...) {
lua_pushstring(L, "Unknown exception");
}
}
}
%}
/* Functions and methods which are marked as "nothrow": */
EOF
chdir($INC[0]);
exception_data::for_each_nothrow(sub { print FD "%exception $_[0];\n" });
print FD <<'EOF';
%exception {
try {
$action
} catch (...) {
Xapian::handle_exception(L);
SWIG_fail;
}
}
EOF
close FD or die $!;
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