#!/usr/bin/perl
+$VERSION = '1.02_02';
+
BEGIN {
push @INC, './lib';
}
sub DEFAULT_OFF () { 2 }
my $tree = {
- 'unsafe' => { 'untie' => DEFAULT_OFF,
- 'substr' => DEFAULT_OFF,
- 'taint' => DEFAULT_OFF,
- 'signal' => DEFAULT_OFF,
- 'closure' => DEFAULT_OFF,
- 'overflow' => DEFAULT_OFF,
- 'portable' => DEFAULT_OFF,
- 'utf8' => DEFAULT_OFF,
- } ,
- 'io' => { 'pipe' => DEFAULT_OFF,
- 'unopened' => DEFAULT_OFF,
- 'closed' => DEFAULT_OFF,
- 'newline' => DEFAULT_OFF,
- 'exec' => DEFAULT_OFF,
- #'wr in in file'=> DEFAULT_OFF,
- },
- 'syntax' => { 'ambiguous' => DEFAULT_OFF,
- 'semicolon' => DEFAULT_OFF,
- 'precedence' => DEFAULT_OFF,
- 'reserved' => DEFAULT_OFF,
- 'octal' => DEFAULT_OFF,
- 'digit' => DEFAULT_OFF,
- 'parenthesis' => DEFAULT_OFF,
- 'deprecated' => DEFAULT_OFF,
- 'printf' => DEFAULT_OFF,
- },
- 'severe' => { 'inplace' => DEFAULT_ON,
- 'internal' => DEFAULT_ON,
- 'debugging' => DEFAULT_ON,
- },
- 'void' => DEFAULT_OFF,
- 'recursion' => DEFAULT_OFF,
- 'redefine' => DEFAULT_OFF,
- 'numeric' => DEFAULT_OFF,
- 'uninitialized'=> DEFAULT_OFF,
- 'once' => DEFAULT_OFF,
- 'misc' => DEFAULT_OFF,
- #'default' => DEFAULT_ON,
- } ;
+'all' => [ 5.008, {
+ 'io' => [ 5.008, {
+ 'pipe' => [ 5.008, DEFAULT_OFF],
+ 'unopened' => [ 5.008, DEFAULT_OFF],
+ 'closed' => [ 5.008, DEFAULT_OFF],
+ 'newline' => [ 5.008, DEFAULT_OFF],
+ 'exec' => [ 5.008, DEFAULT_OFF],
+ 'layer' => [ 5.008, DEFAULT_OFF],
+ }],
+ 'syntax' => [ 5.008, {
+ 'ambiguous' => [ 5.008, DEFAULT_OFF],
+ 'semicolon' => [ 5.008, DEFAULT_OFF],
+ 'precedence' => [ 5.008, DEFAULT_OFF],
+ 'bareword' => [ 5.008, DEFAULT_OFF],
+ 'reserved' => [ 5.008, DEFAULT_OFF],
+ 'digit' => [ 5.008, DEFAULT_OFF],
+ 'parenthesis' => [ 5.008, DEFAULT_OFF],
+ 'printf' => [ 5.008, DEFAULT_OFF],
+ 'prototype' => [ 5.008, DEFAULT_OFF],
+ 'qw' => [ 5.008, DEFAULT_OFF],
+ }],
+ 'severe' => [ 5.008, {
+ 'inplace' => [ 5.008, DEFAULT_ON],
+ 'internal' => [ 5.008, DEFAULT_ON],
+ 'debugging' => [ 5.008, DEFAULT_ON],
+ 'malloc' => [ 5.008, DEFAULT_ON],
+ }],
+ 'deprecated' => [ 5.008, DEFAULT_OFF],
+ 'void' => [ 5.008, DEFAULT_OFF],
+ 'recursion' => [ 5.008, DEFAULT_OFF],
+ 'redefine' => [ 5.008, DEFAULT_OFF],
+ 'numeric' => [ 5.008, DEFAULT_OFF],
+ 'uninitialized' => [ 5.008, DEFAULT_OFF],
+ 'once' => [ 5.008, DEFAULT_OFF],
+ 'misc' => [ 5.008, DEFAULT_OFF],
+ 'regexp' => [ 5.008, DEFAULT_OFF],
+ 'glob' => [ 5.008, DEFAULT_OFF],
+ 'untie' => [ 5.008, DEFAULT_OFF],
+ 'substr' => [ 5.008, DEFAULT_OFF],
+ 'taint' => [ 5.008, DEFAULT_OFF],
+ 'signal' => [ 5.008, DEFAULT_OFF],
+ 'closure' => [ 5.008, DEFAULT_OFF],
+ 'overflow' => [ 5.008, DEFAULT_OFF],
+ 'portable' => [ 5.008, DEFAULT_OFF],
+ 'utf8' => [ 5.008, DEFAULT_OFF],
+ 'exiting' => [ 5.008, DEFAULT_OFF],
+ 'pack' => [ 5.008, DEFAULT_OFF],
+ 'unpack' => [ 5.008, DEFAULT_OFF],
+ 'threads' => [ 5.008, DEFAULT_OFF],
+ 'assertions' => [ 5.009, DEFAULT_OFF],
+
+ #'default' => [ 5.008, DEFAULT_ON ],
+ }],
+} ;
###########################################################################
sub tab {
my %list ;
my %Value ;
-my $index = 0 ;
+my %ValueToName ;
+my %NameToValue ;
+my $index ;
+
+my %v_list = () ;
+
+sub valueWalk
+{
+ my $tre = shift ;
+ my @list = () ;
+ my ($k, $v) ;
+
+ foreach $k (sort keys %$tre) {
+ $v = $tre->{$k};
+ die "duplicate key $k\n" if defined $list{$k} ;
+ die "Value associated with key '$k' is not an ARRAY reference"
+ if !ref $v || ref $v ne 'ARRAY' ;
+
+ my ($ver, $rest) = @{ $v } ;
+ push @{ $v_list{$ver} }, $k;
+
+ if (ref $rest)
+ { valueWalk ($rest) }
+
+ }
+
+}
+
+sub orderValues
+{
+ my $index = 0;
+ foreach my $ver ( sort { $a <=> $b } keys %v_list ) {
+ foreach my $name (@{ $v_list{$ver} } ) {
+ $ValueToName{ $index } = [ uc $name, $ver ] ;
+ $NameToValue{ uc $name } = $index ++ ;
+ }
+ }
+
+ return $index ;
+}
+
+###########################################################################
sub walk
{
foreach $k (sort keys %$tre) {
$v = $tre->{$k};
die "duplicate key $k\n" if defined $list{$k} ;
- $Value{$index} = uc $k ;
- push @{ $list{$k} }, $index ++ ;
- if (ref $v)
- { push (@{ $list{$k} }, walk ($v)) }
+ #$Value{$index} = uc $k ;
+ die "Can't find key '$k'"
+ if ! defined $NameToValue{uc $k} ;
+ push @{ $list{$k} }, $NameToValue{uc $k} ;
+ die "Value associated with key '$k' is not an ARRAY reference"
+ if !ref $v || ref $v ne 'ARRAY' ;
+
+ my ($ver, $rest) = @{ $v } ;
+ if (ref $rest)
+ { push (@{ $list{$k} }, walk ($rest)) }
+
push @list, @{ $list{$k} } ;
}
for ($i = 1 ; $i < @a; ++ $i) {
- $out[$i] = ".."
+ $out[$i] = ".."
if $a[$i] == $a[$i - 1] + 1 && $a[$i] + 1 == $a[$i + 1] ;
}
}
###########################################################################
+sub printTree
+{
+ my $tre = shift ;
+ my $prefix = shift ;
+ my ($k, $v) ;
-sub mkHex
+ my $max = (sort {$a <=> $b} map { length $_ } keys %$tre)[-1] ;
+ my @keys = sort keys %$tre ;
+
+ while ($k = shift @keys) {
+ $v = $tre->{$k};
+ die "Value associated with key '$k' is not an ARRAY reference"
+ if !ref $v || ref $v ne 'ARRAY' ;
+
+ my $offset ;
+ if ($tre ne $tree) {
+ print $prefix . "|\n" ;
+ print $prefix . "+- $k" ;
+ $offset = ' ' x ($max + 4) ;
+ }
+ else {
+ print $prefix . "$k" ;
+ $offset = ' ' x ($max + 1) ;
+ }
+
+ my ($ver, $rest) = @{ $v } ;
+ if (ref $rest)
+ {
+ my $bar = @keys ? "|" : " ";
+ print " -" . "-" x ($max - length $k ) . "+\n" ;
+ printTree ($rest, $prefix . $bar . $offset )
+ }
+ else
+ { print "\n" }
+ }
+
+}
+
+###########################################################################
+
+sub mkHexOct
{
- my ($max, @a) = @_ ;
+ my ($f, $max, @a) = @_ ;
my $mask = "\x00" x $max ;
my $string = "" ;
vec($mask, $_, 1) = 1 ;
}
- #$string = unpack("H$max", $mask) ;
- #$string =~ s/(..)/\x$1/g;
foreach (unpack("C*", $mask)) {
- $string .= '\x' . sprintf("%2.2x", $_) ;
+ if ($f eq 'x') {
+ $string .= '\x' . sprintf("%2.2x", $_)
+ }
+ else {
+ $string .= '\\' . sprintf("%o", $_)
+ }
}
return $string ;
}
+sub mkHex
+{
+ my($max, @a) = @_;
+ return mkHexOct("x", $max, @a);
+}
+
+sub mkOct
+{
+ my($max, @a) = @_;
+ return mkHexOct("o", $max, @a);
+}
+
###########################################################################
+if (@ARGV && $ARGV[0] eq "tree")
+{
+ printTree($tree, " ") ;
+ exit ;
+}
-#unlink "warnings.h";
-#unlink "lib/warnings.pm";
+unlink "warnings.h";
+unlink "lib/warnings.pm";
open(WARN, ">warnings.h") || die "Can't create warnings.h: $!\n";
+binmode WARN;
open(PM, ">lib/warnings.pm") || die "Can't create lib/warnings.pm: $!\n";
+binmode PM;
print WARN <<'EOM' ;
-/* !!!!!!! DO NOT EDIT THIS FILE !!!!!!!
+/* -*- buffer-read-only: t -*-
+ !!!!!!! DO NOT EDIT THIS FILE !!!!!!!
This file is built by warnings.pl
Any changes made here will be lost!
*/
#define G_WARN_ONCE 8 /* set if 'once' ever enabled */
#define G_WARN_ALL_MASK (G_WARN_ALL_ON|G_WARN_ALL_OFF)
-#define WARN_STD Nullsv
-#define WARN_ALL (Nullsv+1) /* use warnings 'all' */
-#define WARN_NONE (Nullsv+2) /* no warnings 'all' */
+#define pWARN_STD NULL
+#define pWARN_ALL (((SV*)0)+1) /* use warnings 'all' */
+#define pWARN_NONE (((SV*)0)+2) /* no warnings 'all' */
-#define specialWARN(x) ((x) == WARN_STD || (x) == WARN_ALL || \
- (x) == WARN_NONE)
+#define specialWARN(x) ((x) == pWARN_STD || (x) == pWARN_ALL || \
+ (x) == pWARN_NONE)
+EOM
-#define ckDEAD(x) \
- ( ! specialWARN(PL_curcop->cop_warnings) && \
- IsSet(SvPVX(PL_curcop->cop_warnings), 2*x+1))
-
-#define ckWARN(x) \
- ( (PL_curcop->cop_warnings != WARN_STD && \
- PL_curcop->cop_warnings != WARN_NONE && \
- (PL_curcop->cop_warnings == WARN_ALL || \
- IsSet(SvPVX(PL_curcop->cop_warnings), 2*x) ) ) \
- || (PL_curcop->cop_warnings == WARN_STD && PL_dowarn & G_WARN_ON) )
-
-#define ckWARN2(x,y) \
- ( (PL_curcop->cop_warnings != WARN_STD && \
- PL_curcop->cop_warnings != WARN_NONE && \
- (PL_curcop->cop_warnings == WARN_ALL || \
- IsSet(SvPVX(PL_curcop->cop_warnings), 2*x) || \
- IsSet(SvPVX(PL_curcop->cop_warnings), 2*y) ) ) \
- || (PL_curcop->cop_warnings == WARN_STD && PL_dowarn & G_WARN_ON) )
-
-#define ckWARN_d(x) \
- (PL_curcop->cop_warnings == WARN_STD || \
- PL_curcop->cop_warnings == WARN_ALL || \
- (PL_curcop->cop_warnings != WARN_NONE && \
- IsSet(SvPVX(PL_curcop->cop_warnings), 2*x) ) )
-
-#define ckWARN2_d(x,y) \
- (PL_curcop->cop_warnings == WARN_STD || \
- PL_curcop->cop_warnings == WARN_ALL || \
- (PL_curcop->cop_warnings != WARN_NONE && \
- (IsSet(SvPVX(PL_curcop->cop_warnings), 2*x) || \
- IsSet(SvPVX(PL_curcop->cop_warnings), 2*y) ) ) )
-
-
-#define isLEXWARN_on (PL_curcop->cop_warnings != WARN_STD)
-#define isLEXWARN_off (PL_curcop->cop_warnings == WARN_STD)
-#define isWARN_ONCE (PL_dowarn & (G_WARN_ON|G_WARN_ONCE))
-#define isWARN_on(c,x) (IsSet(SvPVX(c), 2*(x)))
+my $offset = 0 ;
-EOM
+$index = $offset ;
+#@{ $list{"all"} } = walk ($tree) ;
+valueWalk ($tree) ;
+my $index = orderValues();
+die <<EOM if $index > 255 ;
+Too many warnings categories -- max is 255
+ rewrite packWARN* & unpackWARN* macros
+EOM
-$index = 0 ;
-@{ $list{"all"} } = walk ($tree) ;
+walk ($tree) ;
$index *= 2 ;
my $warn_size = int($index / 8) + ($index % 8 != 0) ;
my $k ;
-foreach $k (sort { $a <=> $b } keys %Value) {
- print WARN tab(5, "#define WARN_$Value{$k}"), "$k\n" ;
+my $last_ver = 0;
+foreach $k (sort { $a <=> $b } keys %ValueToName) {
+ my ($name, $version) = @{ $ValueToName{$k} };
+ print WARN "\n/* Warnings Categories added in Perl $version */\n\n"
+ if $last_ver != $version ;
+ print WARN tab(5, "#define WARN_$name"), "$k\n" ;
+ $last_ver = $version ;
}
print WARN "\n" ;
#print WARN tab(5, '#define WARN_ALLstring'), '"', ('\377' x $warn_size) , "\"\n" ;
print WARN tab(5, '#define WARN_ALLstring'), '"', ('\125' x $warn_size) , "\"\n" ;
print WARN tab(5, '#define WARN_NONEstring'), '"', ('\0' x $warn_size) , "\"\n" ;
+my $WARN_TAINTstring = mkOct($warn_size, map $_ * 2, @{ $list{'taint'} });
+
+print WARN tab(5, '#define WARN_TAINTstring'), qq["$WARN_TAINTstring"\n] ;
print WARN <<'EOM';
-/* end of file warnings.h */
+#define isLEXWARN_on (PL_curcop->cop_warnings != pWARN_STD)
+#define isLEXWARN_off (PL_curcop->cop_warnings == pWARN_STD)
+#define isWARN_ONCE (PL_dowarn & (G_WARN_ON|G_WARN_ONCE))
+#define isWARN_on(c,x) (IsSet(SvPVX_const(c), 2*(x)))
+#define isWARNf_on(c,x) (IsSet(SvPVX_const(c), 2*(x)+1))
+
+#define ckWARN(w) Perl_ckwarn(aTHX_ packWARN(w))
+#define ckWARN2(w1,w2) Perl_ckwarn(aTHX_ packWARN2(w1,w2))
+#define ckWARN3(w1,w2,w3) Perl_ckwarn(aTHX_ packWARN3(w1,w2,w3))
+#define ckWARN4(w1,w2,w3,w4) Perl_ckwarn(aTHX_ packWARN4(w1,w2,w3,w4))
+
+#define ckWARN_d(w) Perl_ckwarn_d(aTHX_ packWARN(w))
+#define ckWARN2_d(w1,w2) Perl_ckwarn_d(aTHX_ packWARN2(w1,w2))
+#define ckWARN3_d(w1,w2,w3) Perl_ckwarn_d(aTHX_ packWARN3(w1,w2,w3))
+#define ckWARN4_d(w1,w2,w3,w4) Perl_ckwarn_d(aTHX_ packWARN4(w1,w2,w3,w4))
+
+#define packWARN(a) (a )
+#define packWARN2(a,b) ((a) | ((b)<<8) )
+#define packWARN3(a,b,c) ((a) | ((b)<<8) | ((c)<<16) )
+#define packWARN4(a,b,c,d) ((a) | ((b)<<8) | ((c)<<16) | ((d) <<24))
+
+#define unpackWARN1(x) ((x) & 0xFF)
+#define unpackWARN2(x) (((x) >>8) & 0xFF)
+#define unpackWARN3(x) (((x) >>16) & 0xFF)
+#define unpackWARN4(x) (((x) >>24) & 0xFF)
+
+#define ckDEAD(x) \
+ ( ! specialWARN(PL_curcop->cop_warnings) && \
+ ( isWARNf_on(PL_curcop->cop_warnings, WARN_ALL) || \
+ isWARNf_on(PL_curcop->cop_warnings, unpackWARN1(x)) || \
+ isWARNf_on(PL_curcop->cop_warnings, unpackWARN2(x)) || \
+ isWARNf_on(PL_curcop->cop_warnings, unpackWARN3(x)) || \
+ isWARNf_on(PL_curcop->cop_warnings, unpackWARN4(x))))
+/* end of file warnings.h */
+/* ex: set ro: */
EOM
close WARN ;
print PM $_ ;
}
-$list{'all'} = [ 0 .. 8 * ($warn_size/2) - 1 ] ;
-print PM "%Bits = (\n" ;
+#$list{'all'} = [ $offset .. 8 * ($warn_size/2) - 1 ] ;
+
+$last_ver = 0;
+print PM "our %Offsets = (\n" ;
+foreach my $k (sort { $a <=> $b } keys %ValueToName) {
+ my ($name, $version) = @{ $ValueToName{$k} };
+ $name = lc $name;
+ $k *= 2 ;
+ if ( $last_ver != $version ) {
+ print PM "\n";
+ print PM tab(4, " # Warnings Categories added in Perl $version");
+ print PM "\n\n";
+ }
+ print PM tab(4, " '$name'"), "=> $k,\n" ;
+ $last_ver = $version;
+}
+
+print PM " );\n\n" ;
+
+print PM "our %Bits = (\n" ;
foreach $k (sort keys %list) {
my $v = $list{$k} ;
my @list = sort { $a <=> $b } @$v ;
- print PM tab(4, " '$k'"), '=> "',
- # mkHex($warn_size, @list),
- mkHex($warn_size, map $_ * 2 , @list),
+ print PM tab(4, " '$k'"), '=> "',
+ # mkHex($warn_size, @list),
+ mkHex($warn_size, map $_ * 2 , @list),
'", # [', mkRange(@list), "]\n" ;
}
print PM " );\n\n" ;
-print PM "%DeadBits = (\n" ;
+print PM "our %DeadBits = (\n" ;
foreach $k (sort keys %list) {
my $v = $list{$k} ;
my @list = sort { $a <=> $b } @$v ;
- print PM tab(4, " '$k'"), '=> "',
- # mkHex($warn_size, @list),
- mkHex($warn_size, map $_ * 2 + 1 , @list),
+ print PM tab(4, " '$k'"), '=> "',
+ # mkHex($warn_size, @list),
+ mkHex($warn_size, map $_ * 2 + 1 , @list),
'", # [', mkRange(@list), "]\n" ;
}
print PM " );\n\n" ;
+print PM '$NONE = "', ('\0' x $warn_size) , "\";\n" ;
+print PM '$LAST_BIT = ' . "$index ;\n" ;
+print PM '$BYTES = ' . "$warn_size ;\n" ;
while (<DATA>) {
print PM $_ ;
}
+print PM "# ex: set ro:\n";
close PM ;
__END__
-
+# -*- buffer-read-only: t -*-
+# !!!!!!! DO NOT EDIT THIS FILE !!!!!!!
# This file was created by warnings.pl
# Any changes made here will be lost.
#
package warnings;
+our $VERSION = '1.05';
+
=head1 NAME
warnings - Perl pragma to control optional warnings
use warnings "all";
no warnings "all";
+ use warnings::register;
+ if (warnings::enabled()) {
+ warnings::warn("some warning");
+ }
+
+ if (warnings::enabled("void")) {
+ warnings::warn("void", "some warning");
+ }
+
+ if (warnings::enabled($object)) {
+ warnings::warn($object, "some warning");
+ }
+
+ warnings::warnif("some warning");
+ warnings::warnif("void", "some warning");
+ warnings::warnif($object, "some warning");
+
=head1 DESCRIPTION
+The C<warnings> pragma is a replacement for the command line flag C<-w>,
+but the pragma is limited to the enclosing block, while the flag is global.
+See L<perllexwarn> for more information.
+
If no import list is supplied, all possible warnings are either enabled
or disabled.
-See L<perlmod/Pragmatic Modules> and L<perllexwarn>.
+A number of functions are provided to assist module authors.
+=over 4
-=cut
+=item use warnings::register
+
+Creates a new warnings category with the same name as the package where
+the call to the pragma is used.
+
+=item warnings::enabled()
+
+Use the warnings category with the same name as the current package.
+
+Return TRUE if that warnings category is enabled in the calling module.
+Otherwise returns FALSE.
+
+=item warnings::enabled($category)
-use Carp ;
+Return TRUE if the warnings category, C<$category>, is enabled in the
+calling module.
+Otherwise returns FALSE.
+
+=item warnings::enabled($object)
+
+Use the name of the class for the object reference, C<$object>, as the
+warnings category.
+
+Return TRUE if that warnings category is enabled in the first scope
+where the object is used.
+Otherwise returns FALSE.
+
+=item warnings::warn($message)
+
+Print C<$message> to STDERR.
+
+Use the warnings category with the same name as the current package.
+
+If that warnings category has been set to "FATAL" in the calling module
+then die. Otherwise return.
+
+=item warnings::warn($category, $message)
+
+Print C<$message> to STDERR.
+
+If the warnings category, C<$category>, has been set to "FATAL" in the
+calling module then die. Otherwise return.
+
+=item warnings::warn($object, $message)
+
+Print C<$message> to STDERR.
+
+Use the name of the class for the object reference, C<$object>, as the
+warnings category.
+
+If that warnings category has been set to "FATAL" in the scope where C<$object>
+is first used then die. Otherwise return.
+
+
+=item warnings::warnif($message)
+
+Equivalent to:
+
+ if (warnings::enabled())
+ { warnings::warn($message) }
+
+=item warnings::warnif($category, $message)
+
+Equivalent to:
+
+ if (warnings::enabled($category))
+ { warnings::warn($category, $message) }
+
+=item warnings::warnif($object, $message)
+
+Equivalent to:
+
+ if (warnings::enabled($object))
+ { warnings::warn($object, $message) }
+
+=back
+
+See L<perlmodlib/Pragmatic Modules> and L<perllexwarn>.
+
+=cut
KEYWORDS
-sub bits {
- my $mask ;
+$All = "" ; vec($All, $Offsets{'all'}, 2) = 3 ;
+
+sub Croaker
+{
+ require Carp::Heavy; # this initializes %CarpInternal
+ local $Carp::CarpInternal{'warnings'};
+ delete $Carp::CarpInternal{'warnings'};
+ Carp::croak(@_);
+}
+
+sub bits
+{
+ # called from B::Deparse.pm
+
+ push @_, 'all' unless @_;
+
+ my $mask;
my $catmask ;
my $fatal = 0 ;
- foreach my $word (@_) {
- if ($word eq 'FATAL') {
+ my $no_fatal = 0 ;
+
+ foreach my $word ( @_ ) {
+ if ($word eq 'FATAL') {
$fatal = 1;
+ $no_fatal = 0;
}
- else {
- if ($catmask = $Bits{$word}) {
- $mask |= $catmask ;
- $mask |= $DeadBits{$word} if $fatal ;
- }
+ elsif ($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'")}
}
return $mask ;
}
-sub import {
+sub import
+{
shift;
- ${^WARNING_BITS} |= bits(@_ ? @_ : 'all') ;
+
+ my $catmask ;
+ my $fatal = 0 ;
+ my $no_fatal = 0 ;
+
+ my $mask = ${^WARNING_BITS} ;
+
+ if (vec($mask, $Offsets{'all'}, 1)) {
+ $mask |= $Bits{'all'} ;
+ $mask |= $DeadBits{'all'} if vec($mask, $Offsets{'all'}+1, 1);
+ }
+
+ push @_, 'all' unless @_;
+
+ 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 ;
}
-sub unimport {
+sub unimport
+{
shift;
- ${^WARNING_BITS} &= ~ bits(@_ ? @_ : 'all') ;
+
+ my $catmask ;
+ my $mask = ${^WARNING_BITS} ;
+
+ if (vec($mask, $Offsets{'all'}, 1)) {
+ $mask |= $Bits{'all'} ;
+ $mask |= $DeadBits{'all'} if vec($mask, $Offsets{'all'}+1, 1);
+ }
+
+ push @_, 'all' unless @_;
+
+ foreach my $word ( @_ ) {
+ if ($word eq 'FATAL') {
+ next;
+ }
+ elsif ($catmask = $Bits{$word}) {
+ $mask &= ~($catmask | $DeadBits{$word} | $All);
+ }
+ else
+ { Croaker("Unknown warnings category '$word'")}
+ }
+
+ ${^WARNING_BITS} = $mask ;
}
+my %builtin_type; @builtin_type{qw(SCALAR ARRAY HASH CODE REF GLOB LVALUE Regexp)} = ();
+
+sub __chk
+{
+ my $category ;
+ my $offset ;
+ my $isobj = 0 ;
+
+ if (@_) {
+ # check the category supplied.
+ $category = shift ;
+ if (my $type = ref $category) {
+ Croaker("not an object")
+ if exists $builtin_type{$type};
+ $category = $type;
+ $isobj = 1 ;
+ }
+ $offset = $Offsets{$category};
+ Croaker("Unknown warnings category '$category'")
+ unless defined $offset;
+ }
+ else {
+ $category = (caller(1))[0] ;
+ $offset = $Offsets{$category};
+ Croaker("package '$category' not registered for warnings")
+ unless defined $offset ;
+ }
+
+ my $this_pkg = (caller(1))[0] ;
+ my $i = 2 ;
+ my $pkg ;
+
+ if ($isobj) {
+ while (do { { package DB; $pkg = (caller($i++))[0] } } ) {
+ last unless @DB::args && $DB::args[0] =~ /^$category=/ ;
+ }
+ $i -= 2 ;
+ }
+ else {
+ $i = _error_loc(); # see where Carp will allocate the error
+ }
+
+ my $callers_bitmask = (caller($i))[9] ;
+ return ($callers_bitmask, $offset, $i) ;
+}
+
+sub _error_loc {
+ require Carp::Heavy;
+ goto &Carp::short_error_loc; # don't introduce another stack frame
+}
+
sub enabled
{
- my $string = shift ;
+ Croaker("Usage: warnings::enabled([category])")
+ unless @_ == 1 || @_ == 0 ;
+
+ my ($callers_bitmask, $offset, $i) = __chk(@_) ;
+
+ return 0 unless defined $callers_bitmask ;
+ return vec($callers_bitmask, $offset, 1) ||
+ vec($callers_bitmask, $Offsets{'all'}, 1) ;
+}
+
+
+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) ;
+}
+
+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) ;
- return 1
- if $bits{$string} && ${^WARNING_BITS} & $bits{$string} ;
-
- return 0 ;
+ Carp::carp($message) ;
}
1;
https://perl5.git.perl.org / perl5.git / blobdiff