# -*- buffer-read-only: t -*-
# !!!!!!! DO NOT EDIT THIS FILE !!!!!!!
-# This file was created by warnings.pl
+# This file was created by regen/warnings.pl
# Any changes made here will be lost.
#
package warnings;
-our $VERSION = '1.10';
+our $VERSION = '1.11';
# Verify that we're called correctly so that warnings will work.
# see also strict.pm.
if (warnings::enabled($object))
{ warnings::warn($object, $message) }
+=item warnings::register_categories(@names)
+
+This registers warning categories for the given names and is primarily for
+use by the warnings::register pragma, for which see L<perllexwarn>.
+
=back
See L<perlmodlib/Pragmatic Modules> and L<perllexwarn>.
Carp::croak(@_);
}
-sub bits
-{
- # called from B::Deparse.pm
-
- push @_, 'all' unless @_;
-
- my $mask;
+sub _bits {
+ my $mask = shift ;
my $catmask ;
my $fatal = 0 ;
my $no_fatal = 0 ;
return $mask ;
}
+sub bits
+{
+ # called from B::Deparse.pm
+ push @_, 'all' unless @_ ;
+ return _bits(undef, @_) ;
+}
+
sub import
{
shift;
$mask |= $DeadBits{'all'} if vec($mask, $Offsets{'all'}+1, 1);
}
- unless (@_) {
- # This is equivalent to @_ = 'all' ;
- return ${^WARNING_BITS} = $mask | $Bits{all} ;
- }
-
- my $catmask ;
- my $fatal = 0 ;
- my $no_fatal = 0 ;
-
- foreach my $word ( @_ ) {
- if ($word eq 'FATAL') {
- $fatal = 1;
- $no_fatal = 0;
- }
- elsif ($word eq 'NONFATAL') {
- $fatal = 0;
- $no_fatal = 1;
- }
- elsif ($catmask = $Bits{$word}) {
- $mask |= $catmask ;
- $mask |= $DeadBits{$word} if $fatal ;
- $mask &= ~($DeadBits{$word}|$All) if $no_fatal ;
- }
- else
- { Croaker("Unknown warnings category '$word'")}
- }
-
- ${^WARNING_BITS} = $mask ;
+ # Empty @_ is equivalent to @_ = 'all' ;
+ ${^WARNING_BITS} = @_ ? _bits($mask, @_) : $mask | $Bits{all} ;
}
sub unimport
my %builtin_type; @builtin_type{qw(SCALAR ARRAY HASH CODE REF GLOB LVALUE Regexp)} = ();
+sub MESSAGE () { 4 };
+sub FATAL () { 2 };
+sub NORMAL () { 1 };
+
sub __chk
{
my $category ;
my $offset ;
my $isobj = 0 ;
+ my $wanted = shift;
+ my $has_message = $wanted & MESSAGE;
+
+ unless (@_ == 1 || @_ == ($has_message ? 2 : 0)) {
+ my $sub = (caller 1)[3];
+ my $syntax = $has_message ? "[category,] 'message'" : '[category]';
+ Croaker("Usage: $sub($syntax)");
+ }
+
+ my $message = pop if $has_message;
if (@_) {
# check the category supplied.
$i = _error_loc(); # see where Carp will allocate the error
}
- my $callers_bitmask = (caller($i))[9] ;
- return ($callers_bitmask, $offset, $i) ;
+ # Defaulting this to 0 reduces complexity in code paths below.
+ my $callers_bitmask = (caller($i))[9] || 0 ;
+
+ my @results;
+ foreach my $type (FATAL, NORMAL) {
+ next unless $wanted & $type;
+
+ push @results, (vec($callers_bitmask, $offset + $type - 1, 1) ||
+ vec($callers_bitmask, $Offsets{'all'} + $type - 1, 1));
+ }
+
+ # &enabled and &fatal_enabled
+ return $results[0] unless $has_message;
+
+ # &warnif, and the category is neither enabled as warning nor as fatal
+ return if $wanted == (NORMAL | FATAL | MESSAGE)
+ && !($results[0] || $results[1]);
+
+ require Carp;
+ Carp::croak($message) if $results[0];
+ # will always get here for &warn. will only get here for &warnif if the
+ # category is enabled
+ Carp::carp($message);
+}
+
+sub _mkMask
+{
+ my ($bit) = @_;
+ my $mask = "";
+
+ vec($mask, $bit, 1) = 1;
+ return $mask;
+}
+
+sub register_categories
+{
+ my @names = @_;
+
+ for my $name (@names) {
+ if (! defined $Bits{$name}) {
+ $Bits{$name} = _mkMask($LAST_BIT);
+ vec($Bits{'all'}, $LAST_BIT, 1) = 1;
+ $Offsets{$name} = $LAST_BIT ++;
+ foreach my $k (keys %Bits) {
+ vec($Bits{$k}, $LAST_BIT, 1) = 0;
+ }
+ $DeadBits{$name} = _mkMask($LAST_BIT);
+ vec($DeadBits{'all'}, $LAST_BIT++, 1) = 1;
+ }
+ }
}
sub _error_loc {
require Carp;
goto &Carp::short_error_loc; # don't introduce another stack frame
-}
+}
sub enabled
{
- Croaker("Usage: warnings::enabled([category])")
- unless @_ == 1 || @_ == 0 ;
-
- my ($callers_bitmask, $offset, $i) = __chk(@_) ;
-
- return 0 unless defined $callers_bitmask ;
- return vec($callers_bitmask, $offset, 1) ||
- vec($callers_bitmask, $Offsets{'all'}, 1) ;
+ return __chk(NORMAL, @_);
}
sub fatal_enabled
{
- Croaker("Usage: warnings::fatal_enabled([category])")
- unless @_ == 1 || @_ == 0 ;
-
- my ($callers_bitmask, $offset, $i) = __chk(@_) ;
-
- return 0 unless defined $callers_bitmask;
- return vec($callers_bitmask, $offset + 1, 1) ||
- vec($callers_bitmask, $Offsets{'all'} + 1, 1) ;
+ return __chk(FATAL, @_);
}
sub warn
{
- Croaker("Usage: warnings::warn([category,] 'message')")
- unless @_ == 2 || @_ == 1 ;
-
- my $message = pop ;
- my ($callers_bitmask, $offset, $i) = __chk(@_) ;
- require Carp;
- Carp::croak($message)
- if vec($callers_bitmask, $offset+1, 1) ||
- vec($callers_bitmask, $Offsets{'all'}+1, 1) ;
- Carp::carp($message) ;
+ return __chk(FATAL | MESSAGE, @_);
}
sub warnif
{
- Croaker("Usage: warnings::warnif([category,] 'message')")
- unless @_ == 2 || @_ == 1 ;
-
- my $message = pop ;
- my ($callers_bitmask, $offset, $i) = __chk(@_) ;
-
- return
- unless defined $callers_bitmask &&
- (vec($callers_bitmask, $offset, 1) ||
- vec($callers_bitmask, $Offsets{'all'}, 1)) ;
-
- require Carp;
- Carp::croak($message)
- if vec($callers_bitmask, $offset+1, 1) ||
- vec($callers_bitmask, $Offsets{'all'}+1, 1) ;
-
- Carp::carp($message) ;
+ return __chk(NORMAL | FATAL | MESSAGE, @_);
}
+# These are not part of any public interface, so we can delete them to save
+# space.
+delete $warnings::{$_} foreach qw(NORMAL FATAL MESSAGE);
+
1;
# ex: set ro: