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package XS::APItest;
use 5.008;
use strict;
use warnings;
use Carp;
use base 'DynaLoader';
# Export everything since these functions are only used by a test script
# Export subpackages too - in effect, export all their routines into us, then
# export everything from us.
sub import {
my $package = shift;
croak ("Can't export for '$package'") unless $package eq __PACKAGE__;
my $exports;
@{$exports}{@_} = () if @_;
my $callpkg = caller;
my @stashes = ('XS::APItest::', \%XS::APItest::);
while (my ($stash_name, $stash) = splice @stashes, 0, 2) {
while (my ($sym_name, $glob) = each %$stash) {
if ($sym_name =~ /::$/) {
# Skip any subpackages that are clearly OO
next if *{$glob}{HASH}{'new'};
push @stashes, "$stash_name$sym_name", *{$glob}{HASH};
} elsif (ref $glob eq 'SCALAR' || *{$glob}{CODE}) {
if ($exports) {
next if !exists $exports->{$sym_name};
delete $exports->{$sym_name};
}
no strict 'refs';
*{"$callpkg\::$sym_name"} = \&{"$stash_name$sym_name"};
}
}
}
if ($exports) {
my @carp = keys %$exports;
if (@carp) {
croak(join '',
(map "\"$_\" is not exported by the $package module\n", sort @carp),
"Can't continue after import errors");
}
}
}
our $VERSION = '0.22';
use vars '$WARNINGS_ON_BOOTSTRAP';
use vars map "\$${_}_called_PP", qw(BEGIN UNITCHECK CHECK INIT END);
BEGIN {
# This is arguably a hack, but it disposes of the UNITCHECK block without
# needing to preprocess the source code
if ($] < 5.009) {
eval 'sub UNITCHECK (&) {}; 1' or die $@;
}
}
# Do these here to verify that XS code and Perl code get called at the same
# times
BEGIN {
$BEGIN_called_PP++;
}
UNITCHECK {
$UNITCHECK_called_PP++;
};
{
# Need $W false by default, as some tests run under -w, and under -w we
# can get warnings about "Too late to run CHECK" block (and INIT block)
no warnings 'void';
CHECK {
$CHECK_called_PP++;
}
INIT {
$INIT_called_PP++;
}
}
END {
$END_called_PP++;
}
if ($WARNINGS_ON_BOOTSTRAP) {
bootstrap XS::APItest $VERSION;
} else {
# More CHECK and INIT blocks that could warn:
local $^W;
bootstrap XS::APItest $VERSION;
}
1;
__END__
=head1 NAME
XS::APItest - Test the perl C API
=head1 SYNOPSIS
use XS::APItest;
print_double(4);
=head1 ABSTRACT
This module tests the perl C API. Also exposes various bit of the perl
internals for the use of core test scripts.
=head1 DESCRIPTION
This module can be used to check that the perl C API is behaving
correctly. This module provides test functions and an associated
test script that verifies the output.
This module is not meant to be installed.
=head2 EXPORT
Exports all the test functions:
=over 4
=item B<print_double>
Test that a double-precision floating point number is formatted
correctly by C<printf>.
print_double( $val );
Output is sent to STDOUT.
=item B<print_long_double>
Test that a C<long double> is formatted correctly by
C<printf>. Takes no arguments - the test value is hard-wired
into the function (as "7").
print_long_double();
Output is sent to STDOUT.
=item B<have_long_double>
Determine whether a C<long double> is supported by Perl. This should
be used to determine whether to test C<print_long_double>.
print_long_double() if have_long_double;
=item B<print_nv>
Test that an C<NV> is formatted correctly by
C<printf>.
print_nv( $val );
Output is sent to STDOUT.
=item B<print_iv>
Test that an C<IV> is formatted correctly by
C<printf>.
print_iv( $val );
Output is sent to STDOUT.
=item B<print_uv>
Test that an C<UV> is formatted correctly by
C<printf>.
print_uv( $val );
Output is sent to STDOUT.
=item B<print_int>
Test that an C<int> is formatted correctly by
C<printf>.
print_int( $val );
Output is sent to STDOUT.
=item B<print_long>
Test that an C<long> is formatted correctly by
C<printf>.
print_long( $val );
Output is sent to STDOUT.
=item B<print_float>
Test that a single-precision floating point number is formatted
correctly by C<printf>.
print_float( $val );
Output is sent to STDOUT.
=item B<call_sv>, B<call_pv>, B<call_method>
These exercise the C calls of the same names. Everything after the flags
arg is passed as the the args to the called function. They return whatever
the C function itself pushed onto the stack, plus the return value from
the function; for example
call_sv( sub { @_, 'c' }, G_ARRAY, 'a', 'b'); # returns 'a', 'b', 'c', 3
call_sv( sub { @_ }, G_SCALAR, 'a', 'b'); # returns 'b', 1
=item B<eval_sv>
Evaluates the passed SV. Result handling is done the same as for
C<call_sv()> etc.
=item B<eval_pv>
Exercises the C function of the same name in scalar context. Returns the
same SV that the C function returns.
=item B<require_pv>
Exercises the C function of the same name. Returns nothing.
=back
=head1 SEE ALSO
L<XS::Typemap>, L<perlapi>.
=head1 AUTHORS
Tim Jenness, E<lt>t.jenness@jach.hawaii.eduE<gt>,
Christian Soeller, E<lt>csoelle@mph.auckland.ac.nzE<gt>,
Hugo van der Sanden E<lt>hv@crypt.compulink.co.ukE<gt>
=head1 COPYRIGHT AND LICENSE
Copyright (C) 2002,2004 Tim Jenness, Christian Soeller, Hugo van der Sanden.
All Rights Reserved.
This library is free software; you can redistribute it and/or modify
it under the same terms as Perl itself.
=cut
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