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root |
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#!/usr/bin/perl |
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$VERSION = '1.02'; |
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BEGIN { |
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push @INC, './lib'; |
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} |
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use strict ; |
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sub DEFAULT_ON () { 1 } |
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sub DEFAULT_OFF () { 2 } |
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my $tree = { |
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'all' => [ 5.008, { |
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'io' => [ 5.008, { |
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'pipe' => [ 5.008, DEFAULT_OFF], |
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'unopened' => [ 5.008, DEFAULT_OFF], |
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'closed' => [ 5.008, DEFAULT_OFF], |
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'newline' => [ 5.008, DEFAULT_OFF], |
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'exec' => [ 5.008, DEFAULT_OFF], |
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'layer' => [ 5.008, DEFAULT_OFF], |
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}], |
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'syntax' => [ 5.008, { |
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'ambiguous' => [ 5.008, DEFAULT_OFF], |
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'semicolon' => [ 5.008, DEFAULT_OFF], |
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'precedence' => [ 5.008, DEFAULT_OFF], |
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'bareword' => [ 5.008, DEFAULT_OFF], |
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'reserved' => [ 5.008, DEFAULT_OFF], |
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'digit' => [ 5.008, DEFAULT_OFF], |
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'parenthesis' => [ 5.008, DEFAULT_OFF], |
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'printf' => [ 5.008, DEFAULT_OFF], |
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'prototype' => [ 5.008, DEFAULT_OFF], |
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'qw' => [ 5.008, DEFAULT_OFF], |
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}], |
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'severe' => [ 5.008, { |
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'inplace' => [ 5.008, DEFAULT_ON], |
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'internal' => [ 5.008, DEFAULT_ON], |
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'debugging' => [ 5.008, DEFAULT_ON], |
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'malloc' => [ 5.008, DEFAULT_ON], |
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}], |
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'deprecated' => [ 5.008, DEFAULT_OFF], |
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'void' => [ 5.008, DEFAULT_OFF], |
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'recursion' => [ 5.008, DEFAULT_OFF], |
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'redefine' => [ 5.008, DEFAULT_OFF], |
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'numeric' => [ 5.008, DEFAULT_OFF], |
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'uninitialized' => [ 5.008, DEFAULT_OFF], |
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'once' => [ 5.008, DEFAULT_OFF], |
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'misc' => [ 5.008, DEFAULT_OFF], |
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'regexp' => [ 5.008, DEFAULT_OFF], |
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'glob' => [ 5.008, DEFAULT_OFF], |
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'y2k' => [ 5.008, DEFAULT_OFF], |
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'untie' => [ 5.008, DEFAULT_OFF], |
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'substr' => [ 5.008, DEFAULT_OFF], |
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'taint' => [ 5.008, DEFAULT_OFF], |
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'signal' => [ 5.008, DEFAULT_OFF], |
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'closure' => [ 5.008, DEFAULT_OFF], |
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'overflow' => [ 5.008, DEFAULT_OFF], |
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'portable' => [ 5.008, DEFAULT_OFF], |
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'utf8' => [ 5.008, DEFAULT_OFF], |
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'exiting' => [ 5.008, DEFAULT_OFF], |
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'pack' => [ 5.008, DEFAULT_OFF], |
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'unpack' => [ 5.008, DEFAULT_OFF], |
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'threads' => [ 5.008, DEFAULT_OFF], |
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#'default' => [ 5.008, DEFAULT_ON ], |
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}], |
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} ; |
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########################################################################### |
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sub tab { |
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my($l, $t) = @_; |
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$t .= "\t" x ($l - (length($t) + 1) / 8); |
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$t; |
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} |
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########################################################################### |
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my %list ; |
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my %Value ; |
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my %ValueToName ; |
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my %NameToValue ; |
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my $index ; |
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my %v_list = () ; |
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sub valueWalk |
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{ |
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my $tre = shift ; |
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my @list = () ; |
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my ($k, $v) ; |
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foreach $k (sort keys %$tre) { |
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$v = $tre->{$k}; |
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die "duplicate key $k\n" if defined $list{$k} ; |
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die "Value associated with key '$k' is not an ARRAY reference" |
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if !ref $v || ref $v ne 'ARRAY' ; |
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my ($ver, $rest) = @{ $v } ; |
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push @{ $v_list{$ver} }, $k; |
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if (ref $rest) |
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{ valueWalk ($rest) } |
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} |
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} |
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sub orderValues |
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{ |
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my $index = 0; |
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foreach my $ver ( sort { $a <=> $b } keys %v_list ) { |
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foreach my $name (@{ $v_list{$ver} } ) { |
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$ValueToName{ $index } = [ uc $name, $ver ] ; |
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$NameToValue{ uc $name } = $index ++ ; |
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} |
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} |
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return $index ; |
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} |
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########################################################################### |
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sub walk |
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{ |
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my $tre = shift ; |
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my @list = () ; |
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my ($k, $v) ; |
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foreach $k (sort keys %$tre) { |
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$v = $tre->{$k}; |
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die "duplicate key $k\n" if defined $list{$k} ; |
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#$Value{$index} = uc $k ; |
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die "Can't find key '$k'" |
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if ! defined $NameToValue{uc $k} ; |
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push @{ $list{$k} }, $NameToValue{uc $k} ; |
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die "Value associated with key '$k' is not an ARRAY reference" |
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if !ref $v || ref $v ne 'ARRAY' ; |
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my ($ver, $rest) = @{ $v } ; |
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if (ref $rest) |
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{ push (@{ $list{$k} }, walk ($rest)) } |
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push @list, @{ $list{$k} } ; |
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} |
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return @list ; |
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} |
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########################################################################### |
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sub mkRange |
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{ |
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my @a = @_ ; |
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my @out = @a ; |
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my $i ; |
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for ($i = 1 ; $i < @a; ++ $i) { |
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$out[$i] = ".." |
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if $a[$i] == $a[$i - 1] + 1 && $a[$i] + 1 == $a[$i + 1] ; |
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} |
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my $out = join(",",@out); |
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$out =~ s/,(\.\.,)+/../g ; |
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return $out; |
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} |
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########################################################################### |
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sub printTree |
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{ |
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my $tre = shift ; |
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my $prefix = shift ; |
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my ($k, $v) ; |
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my $max = (sort {$a <=> $b} map { length $_ } keys %$tre)[-1] ; |
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my @keys = sort keys %$tre ; |
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while ($k = shift @keys) { |
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$v = $tre->{$k}; |
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die "Value associated with key '$k' is not an ARRAY reference" |
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if !ref $v || ref $v ne 'ARRAY' ; |
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my $offset ; |
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if ($tre ne $tree) { |
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print $prefix . "|\n" ; |
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print $prefix . "+- $k" ; |
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$offset = ' ' x ($max + 4) ; |
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} |
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else { |
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print $prefix . "$k" ; |
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$offset = ' ' x ($max + 1) ; |
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} |
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my ($ver, $rest) = @{ $v } ; |
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if (ref $rest) |
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{ |
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my $bar = @keys ? "|" : " "; |
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print " -" . "-" x ($max - length $k ) . "+\n" ; |
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printTree ($rest, $prefix . $bar . $offset ) |
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} |
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else |
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{ print "\n" } |
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} |
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} |
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########################################################################### |
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sub mkHexOct |
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{ |
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my ($f, $max, @a) = @_ ; |
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my $mask = "\x00" x $max ; |
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my $string = "" ; |
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foreach (@a) { |
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vec($mask, $_, 1) = 1 ; |
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} |
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foreach (unpack("C*", $mask)) { |
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if ($f eq 'x') { |
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$string .= '\x' . sprintf("%2.2x", $_) |
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} |
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else { |
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$string .= '\\' . sprintf("%o", $_) |
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} |
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} |
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return $string ; |
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} |
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sub mkHex |
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{ |
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my($max, @a) = @_; |
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return mkHexOct("x", $max, @a); |
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} |
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sub mkOct |
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{ |
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my($max, @a) = @_; |
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return mkHexOct("o", $max, @a); |
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} |
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########################################################################### |
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if (@ARGV && $ARGV[0] eq "tree") |
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{ |
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printTree($tree, " ") ; |
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exit ; |
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} |
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unlink "warnings.h"; |
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unlink "lib/warnings.pm"; |
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open(WARN, ">warnings.h") || die "Can't create warnings.h: $!\n"; |
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binmode WARN; |
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open(PM, ">lib/warnings.pm") || die "Can't create lib/warnings.pm: $!\n"; |
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binmode PM; |
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print WARN <<'EOM' ; |
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/* !!!!!!! DO NOT EDIT THIS FILE !!!!!!! |
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This file is built by warnings.pl |
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Any changes made here will be lost! |
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*/ |
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#define Off(x) ((x) / 8) |
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#define Bit(x) (1 << ((x) % 8)) |
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#define IsSet(a, x) ((a)[Off(x)] & Bit(x)) |
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#define G_WARN_OFF 0 /* $^W == 0 */ |
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#define G_WARN_ON 1 /* -w flag and $^W != 0 */ |
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#define G_WARN_ALL_ON 2 /* -W flag */ |
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#define G_WARN_ALL_OFF 4 /* -X flag */ |
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#define G_WARN_ONCE 8 /* set if 'once' ever enabled */ |
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#define G_WARN_ALL_MASK (G_WARN_ALL_ON|G_WARN_ALL_OFF) |
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#define pWARN_STD Nullsv |
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#define pWARN_ALL (Nullsv+1) /* use warnings 'all' */ |
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#define pWARN_NONE (Nullsv+2) /* no warnings 'all' */ |
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#define specialWARN(x) ((x) == pWARN_STD || (x) == pWARN_ALL || \ |
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(x) == pWARN_NONE) |
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EOM |
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my $offset = 0 ; |
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$index = $offset ; |
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#@{ $list{"all"} } = walk ($tree) ; |
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valueWalk ($tree) ; |
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my $index = orderValues(); |
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die <<EOM if $index > 255 ; |
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Too many warnings categories -- max is 255 |
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rewrite packWARN* & unpackWARN* macros |
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EOM |
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walk ($tree) ; |
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$index *= 2 ; |
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my $warn_size = int($index / 8) + ($index % 8 != 0) ; |
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my $k ; |
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my $last_ver = 0; |
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foreach $k (sort { $a <=> $b } keys %ValueToName) { |
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my ($name, $version) = @{ $ValueToName{$k} }; |
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print WARN "\n/* Warnings Categories added in Perl $version */\n\n" |
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if $last_ver != $version ; |
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print WARN tab(5, "#define WARN_$name"), "$k\n" ; |
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$last_ver = $version ; |
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} |
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print WARN "\n" ; |
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print WARN tab(5, '#define WARNsize'), "$warn_size\n" ; |
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#print WARN tab(5, '#define WARN_ALLstring'), '"', ('\377' x $warn_size) , "\"\n" ; |
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print WARN tab(5, '#define WARN_ALLstring'), '"', ('\125' x $warn_size) , "\"\n" ; |
| 316 |
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print WARN tab(5, '#define WARN_NONEstring'), '"', ('\0' x $warn_size) , "\"\n" ; |
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my $WARN_TAINTstring = mkOct($warn_size, map $_ * 2, @{ $list{'taint'} }); |
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print WARN tab(5, '#define WARN_TAINTstring'), qq["$WARN_TAINTstring"\n] ; |
| 320 |
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| 321 |
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print WARN <<'EOM'; |
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| 323 |
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#define isLEXWARN_on (PL_curcop->cop_warnings != pWARN_STD) |
| 324 |
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#define isLEXWARN_off (PL_curcop->cop_warnings == pWARN_STD) |
| 325 |
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#define isWARN_ONCE (PL_dowarn & (G_WARN_ON|G_WARN_ONCE)) |
| 326 |
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#define isWARN_on(c,x) (IsSet(SvPVX(c), 2*(x))) |
| 327 |
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#define isWARNf_on(c,x) (IsSet(SvPVX(c), 2*(x)+1)) |
| 328 |
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#define ckWARN(x) \ |
| 330 |
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( (isLEXWARN_on && PL_curcop->cop_warnings != pWARN_NONE && \ |
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(PL_curcop->cop_warnings == pWARN_ALL || \ |
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isWARN_on(PL_curcop->cop_warnings, x) ) ) \ |
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|| (isLEXWARN_off && PL_dowarn & G_WARN_ON) ) |
| 334 |
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#define ckWARN2(x,y) \ |
| 336 |
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( (isLEXWARN_on && PL_curcop->cop_warnings != pWARN_NONE && \ |
| 337 |
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(PL_curcop->cop_warnings == pWARN_ALL || \ |
| 338 |
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isWARN_on(PL_curcop->cop_warnings, x) || \ |
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isWARN_on(PL_curcop->cop_warnings, y) ) ) \ |
| 340 |
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|| (isLEXWARN_off && PL_dowarn & G_WARN_ON) ) |
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#define ckWARN3(x,y,z) \ |
| 343 |
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( (isLEXWARN_on && PL_curcop->cop_warnings != pWARN_NONE && \ |
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(PL_curcop->cop_warnings == pWARN_ALL || \ |
| 345 |
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isWARN_on(PL_curcop->cop_warnings, x) || \ |
| 346 |
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isWARN_on(PL_curcop->cop_warnings, y) || \ |
| 347 |
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isWARN_on(PL_curcop->cop_warnings, z) ) ) \ |
| 348 |
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|| (isLEXWARN_off && PL_dowarn & G_WARN_ON) ) |
| 349 |
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#define ckWARN4(x,y,z,t) \ |
| 351 |
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( (isLEXWARN_on && PL_curcop->cop_warnings != pWARN_NONE && \ |
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(PL_curcop->cop_warnings == pWARN_ALL || \ |
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isWARN_on(PL_curcop->cop_warnings, x) || \ |
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isWARN_on(PL_curcop->cop_warnings, y) || \ |
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isWARN_on(PL_curcop->cop_warnings, z) || \ |
| 356 |
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isWARN_on(PL_curcop->cop_warnings, t) ) ) \ |
| 357 |
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|| (isLEXWARN_off && PL_dowarn & G_WARN_ON) ) |
| 358 |
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|
#define ckWARN_d(x) \ |
| 360 |
|
|
(isLEXWARN_off || PL_curcop->cop_warnings == pWARN_ALL || \ |
| 361 |
|
|
(PL_curcop->cop_warnings != pWARN_NONE && \ |
| 362 |
|
|
isWARN_on(PL_curcop->cop_warnings, x) ) ) |
| 363 |
|
|
|
| 364 |
|
|
#define ckWARN2_d(x,y) \ |
| 365 |
|
|
(isLEXWARN_off || PL_curcop->cop_warnings == pWARN_ALL || \ |
| 366 |
|
|
(PL_curcop->cop_warnings != pWARN_NONE && \ |
| 367 |
|
|
(isWARN_on(PL_curcop->cop_warnings, x) || \ |
| 368 |
|
|
isWARN_on(PL_curcop->cop_warnings, y) ) ) ) |
| 369 |
|
|
|
| 370 |
|
|
#define ckWARN3_d(x,y,z) \ |
| 371 |
|
|
(isLEXWARN_off || PL_curcop->cop_warnings == pWARN_ALL || \ |
| 372 |
|
|
(PL_curcop->cop_warnings != pWARN_NONE && \ |
| 373 |
|
|
(isWARN_on(PL_curcop->cop_warnings, x) || \ |
| 374 |
|
|
isWARN_on(PL_curcop->cop_warnings, y) || \ |
| 375 |
|
|
isWARN_on(PL_curcop->cop_warnings, z) ) ) ) |
| 376 |
|
|
|
| 377 |
|
|
#define ckWARN4_d(x,y,z,t) \ |
| 378 |
|
|
(isLEXWARN_off || PL_curcop->cop_warnings == pWARN_ALL || \ |
| 379 |
|
|
(PL_curcop->cop_warnings != pWARN_NONE && \ |
| 380 |
|
|
(isWARN_on(PL_curcop->cop_warnings, x) || \ |
| 381 |
|
|
isWARN_on(PL_curcop->cop_warnings, y) || \ |
| 382 |
|
|
isWARN_on(PL_curcop->cop_warnings, z) || \ |
| 383 |
|
|
isWARN_on(PL_curcop->cop_warnings, t) ) ) ) |
| 384 |
|
|
|
| 385 |
|
|
#define packWARN(a) (a ) |
| 386 |
|
|
#define packWARN2(a,b) ((a) | (b)<<8 ) |
| 387 |
|
|
#define packWARN3(a,b,c) ((a) | (b)<<8 | (c) <<16 ) |
| 388 |
|
|
#define packWARN4(a,b,c,d) ((a) | (b)<<8 | (c) <<16 | (d) <<24) |
| 389 |
|
|
|
| 390 |
|
|
#define unpackWARN1(x) ((x) & 0xFF) |
| 391 |
|
|
#define unpackWARN2(x) (((x) >>8) & 0xFF) |
| 392 |
|
|
#define unpackWARN3(x) (((x) >>16) & 0xFF) |
| 393 |
|
|
#define unpackWARN4(x) (((x) >>24) & 0xFF) |
| 394 |
|
|
|
| 395 |
|
|
#define ckDEAD(x) \ |
| 396 |
|
|
( ! specialWARN(PL_curcop->cop_warnings) && \ |
| 397 |
|
|
( isWARNf_on(PL_curcop->cop_warnings, WARN_ALL) || \ |
| 398 |
|
|
isWARNf_on(PL_curcop->cop_warnings, unpackWARN1(x)) || \ |
| 399 |
|
|
isWARNf_on(PL_curcop->cop_warnings, unpackWARN2(x)) || \ |
| 400 |
|
|
isWARNf_on(PL_curcop->cop_warnings, unpackWARN3(x)) || \ |
| 401 |
|
|
isWARNf_on(PL_curcop->cop_warnings, unpackWARN4(x)))) |
| 402 |
|
|
|
| 403 |
|
|
/* end of file warnings.h */ |
| 404 |
|
|
|
| 405 |
|
|
EOM |
| 406 |
|
|
|
| 407 |
|
|
close WARN ; |
| 408 |
|
|
|
| 409 |
|
|
while (<DATA>) { |
| 410 |
|
|
last if /^KEYWORDS$/ ; |
| 411 |
|
|
print PM $_ ; |
| 412 |
|
|
} |
| 413 |
|
|
|
| 414 |
|
|
#$list{'all'} = [ $offset .. 8 * ($warn_size/2) - 1 ] ; |
| 415 |
|
|
|
| 416 |
|
|
$last_ver = 0; |
| 417 |
|
|
print PM "our %Offsets = (\n" ; |
| 418 |
|
|
foreach my $k (sort { $a <=> $b } keys %ValueToName) { |
| 419 |
|
|
my ($name, $version) = @{ $ValueToName{$k} }; |
| 420 |
|
|
$name = lc $name; |
| 421 |
|
|
$k *= 2 ; |
| 422 |
|
|
if ( $last_ver != $version ) { |
| 423 |
|
|
print PM "\n"; |
| 424 |
|
|
print PM tab(4, " # Warnings Categories added in Perl $version"); |
| 425 |
|
|
print PM "\n\n"; |
| 426 |
|
|
} |
| 427 |
|
|
print PM tab(4, " '$name'"), "=> $k,\n" ; |
| 428 |
|
|
$last_ver = $version; |
| 429 |
|
|
} |
| 430 |
|
|
|
| 431 |
|
|
print PM " );\n\n" ; |
| 432 |
|
|
|
| 433 |
|
|
print PM "our %Bits = (\n" ; |
| 434 |
|
|
foreach $k (sort keys %list) { |
| 435 |
|
|
|
| 436 |
|
|
my $v = $list{$k} ; |
| 437 |
|
|
my @list = sort { $a <=> $b } @$v ; |
| 438 |
|
|
|
| 439 |
|
|
print PM tab(4, " '$k'"), '=> "', |
| 440 |
|
|
# mkHex($warn_size, @list), |
| 441 |
|
|
mkHex($warn_size, map $_ * 2 , @list), |
| 442 |
|
|
'", # [', mkRange(@list), "]\n" ; |
| 443 |
|
|
} |
| 444 |
|
|
|
| 445 |
|
|
print PM " );\n\n" ; |
| 446 |
|
|
|
| 447 |
|
|
print PM "our %DeadBits = (\n" ; |
| 448 |
|
|
foreach $k (sort keys %list) { |
| 449 |
|
|
|
| 450 |
|
|
my $v = $list{$k} ; |
| 451 |
|
|
my @list = sort { $a <=> $b } @$v ; |
| 452 |
|
|
|
| 453 |
|
|
print PM tab(4, " '$k'"), '=> "', |
| 454 |
|
|
# mkHex($warn_size, @list), |
| 455 |
|
|
mkHex($warn_size, map $_ * 2 + 1 , @list), |
| 456 |
|
|
'", # [', mkRange(@list), "]\n" ; |
| 457 |
|
|
} |
| 458 |
|
|
|
| 459 |
|
|
print PM " );\n\n" ; |
| 460 |
|
|
print PM '$NONE = "', ('\0' x $warn_size) , "\";\n" ; |
| 461 |
|
|
print PM '$LAST_BIT = ' . "$index ;\n" ; |
| 462 |
|
|
print PM '$BYTES = ' . "$warn_size ;\n" ; |
| 463 |
|
|
while (<DATA>) { |
| 464 |
|
|
print PM $_ ; |
| 465 |
|
|
} |
| 466 |
|
|
|
| 467 |
|
|
close PM ; |
| 468 |
|
|
|
| 469 |
|
|
__END__ |
| 470 |
|
|
|
| 471 |
|
|
# !!!!!!! DO NOT EDIT THIS FILE !!!!!!! |
| 472 |
|
|
# This file was created by warnings.pl |
| 473 |
|
|
# Any changes made here will be lost. |
| 474 |
|
|
# |
| 475 |
|
|
|
| 476 |
|
|
package warnings; |
| 477 |
|
|
|
| 478 |
|
|
our $VERSION = '1.03'; |
| 479 |
|
|
|
| 480 |
|
|
=head1 NAME |
| 481 |
|
|
|
| 482 |
|
|
warnings - Perl pragma to control optional warnings |
| 483 |
|
|
|
| 484 |
|
|
=head1 SYNOPSIS |
| 485 |
|
|
|
| 486 |
|
|
use warnings; |
| 487 |
|
|
no warnings; |
| 488 |
|
|
|
| 489 |
|
|
use warnings "all"; |
| 490 |
|
|
no warnings "all"; |
| 491 |
|
|
|
| 492 |
|
|
use warnings::register; |
| 493 |
|
|
if (warnings::enabled()) { |
| 494 |
|
|
warnings::warn("some warning"); |
| 495 |
|
|
} |
| 496 |
|
|
|
| 497 |
|
|
if (warnings::enabled("void")) { |
| 498 |
|
|
warnings::warn("void", "some warning"); |
| 499 |
|
|
} |
| 500 |
|
|
|
| 501 |
|
|
if (warnings::enabled($object)) { |
| 502 |
|
|
warnings::warn($object, "some warning"); |
| 503 |
|
|
} |
| 504 |
|
|
|
| 505 |
|
|
warnings::warnif("some warning"); |
| 506 |
|
|
warnings::warnif("void", "some warning"); |
| 507 |
|
|
warnings::warnif($object, "some warning"); |
| 508 |
|
|
|
| 509 |
|
|
=head1 DESCRIPTION |
| 510 |
|
|
|
| 511 |
|
|
The C<warnings> pragma is a replacement for the command line flag C<-w>, |
| 512 |
|
|
but the pragma is limited to the enclosing block, while the flag is global. |
| 513 |
|
|
See L<perllexwarn> for more information. |
| 514 |
|
|
|
| 515 |
|
|
If no import list is supplied, all possible warnings are either enabled |
| 516 |
|
|
or disabled. |
| 517 |
|
|
|
| 518 |
|
|
A number of functions are provided to assist module authors. |
| 519 |
|
|
|
| 520 |
|
|
=over 4 |
| 521 |
|
|
|
| 522 |
|
|
=item use warnings::register |
| 523 |
|
|
|
| 524 |
|
|
Creates a new warnings category with the same name as the package where |
| 525 |
|
|
the call to the pragma is used. |
| 526 |
|
|
|
| 527 |
|
|
=item warnings::enabled() |
| 528 |
|
|
|
| 529 |
|
|
Use the warnings category with the same name as the current package. |
| 530 |
|
|
|
| 531 |
|
|
Return TRUE if that warnings category is enabled in the calling module. |
| 532 |
|
|
Otherwise returns FALSE. |
| 533 |
|
|
|
| 534 |
|
|
=item warnings::enabled($category) |
| 535 |
|
|
|
| 536 |
|
|
Return TRUE if the warnings category, C<$category>, is enabled in the |
| 537 |
|
|
calling module. |
| 538 |
|
|
Otherwise returns FALSE. |
| 539 |
|
|
|
| 540 |
|
|
=item warnings::enabled($object) |
| 541 |
|
|
|
| 542 |
|
|
Use the name of the class for the object reference, C<$object>, as the |
| 543 |
|
|
warnings category. |
| 544 |
|
|
|
| 545 |
|
|
Return TRUE if that warnings category is enabled in the first scope |
| 546 |
|
|
where the object is used. |
| 547 |
|
|
Otherwise returns FALSE. |
| 548 |
|
|
|
| 549 |
|
|
=item warnings::warn($message) |
| 550 |
|
|
|
| 551 |
|
|
Print C<$message> to STDERR. |
| 552 |
|
|
|
| 553 |
|
|
Use the warnings category with the same name as the current package. |
| 554 |
|
|
|
| 555 |
|
|
If that warnings category has been set to "FATAL" in the calling module |
| 556 |
|
|
then die. Otherwise return. |
| 557 |
|
|
|
| 558 |
|
|
=item warnings::warn($category, $message) |
| 559 |
|
|
|
| 560 |
|
|
Print C<$message> to STDERR. |
| 561 |
|
|
|
| 562 |
|
|
If the warnings category, C<$category>, has been set to "FATAL" in the |
| 563 |
|
|
calling module then die. Otherwise return. |
| 564 |
|
|
|
| 565 |
|
|
=item warnings::warn($object, $message) |
| 566 |
|
|
|
| 567 |
|
|
Print C<$message> to STDERR. |
| 568 |
|
|
|
| 569 |
|
|
Use the name of the class for the object reference, C<$object>, as the |
| 570 |
|
|
warnings category. |
| 571 |
|
|
|
| 572 |
|
|
If that warnings category has been set to "FATAL" in the scope where C<$object> |
| 573 |
|
|
is first used then die. Otherwise return. |
| 574 |
|
|
|
| 575 |
|
|
|
| 576 |
|
|
=item warnings::warnif($message) |
| 577 |
|
|
|
| 578 |
|
|
Equivalent to: |
| 579 |
|
|
|
| 580 |
|
|
if (warnings::enabled()) |
| 581 |
|
|
{ warnings::warn($message) } |
| 582 |
|
|
|
| 583 |
|
|
=item warnings::warnif($category, $message) |
| 584 |
|
|
|
| 585 |
|
|
Equivalent to: |
| 586 |
|
|
|
| 587 |
|
|
if (warnings::enabled($category)) |
| 588 |
|
|
{ warnings::warn($category, $message) } |
| 589 |
|
|
|
| 590 |
|
|
=item warnings::warnif($object, $message) |
| 591 |
|
|
|
| 592 |
|
|
Equivalent to: |
| 593 |
|
|
|
| 594 |
|
|
if (warnings::enabled($object)) |
| 595 |
|
|
{ warnings::warn($object, $message) } |
| 596 |
|
|
|
| 597 |
|
|
=back |
| 598 |
|
|
|
| 599 |
|
|
See L<perlmodlib/Pragmatic Modules> and L<perllexwarn>. |
| 600 |
|
|
|
| 601 |
|
|
=cut |
| 602 |
|
|
|
| 603 |
|
|
use Carp (); |
| 604 |
|
|
|
| 605 |
|
|
KEYWORDS |
| 606 |
|
|
|
| 607 |
|
|
$All = "" ; vec($All, $Offsets{'all'}, 2) = 3 ; |
| 608 |
|
|
|
| 609 |
|
|
sub Croaker |
| 610 |
|
|
{ |
| 611 |
|
|
delete $Carp::CarpInternal{'warnings'}; |
| 612 |
|
|
Carp::croak(@_); |
| 613 |
|
|
} |
| 614 |
|
|
|
| 615 |
|
|
sub bits |
| 616 |
|
|
{ |
| 617 |
|
|
# called from B::Deparse.pm |
| 618 |
|
|
|
| 619 |
|
|
push @_, 'all' unless @_; |
| 620 |
|
|
|
| 621 |
|
|
my $mask; |
| 622 |
|
|
my $catmask ; |
| 623 |
|
|
my $fatal = 0 ; |
| 624 |
|
|
my $no_fatal = 0 ; |
| 625 |
|
|
|
| 626 |
|
|
foreach my $word ( @_ ) { |
| 627 |
|
|
if ($word eq 'FATAL') { |
| 628 |
|
|
$fatal = 1; |
| 629 |
|
|
$no_fatal = 0; |
| 630 |
|
|
} |
| 631 |
|
|
elsif ($word eq 'NONFATAL') { |
| 632 |
|
|
$fatal = 0; |
| 633 |
|
|
$no_fatal = 1; |
| 634 |
|
|
} |
| 635 |
|
|
elsif ($catmask = $Bits{$word}) { |
| 636 |
|
|
$mask |= $catmask ; |
| 637 |
|
|
$mask |= $DeadBits{$word} if $fatal ; |
| 638 |
|
|
$mask &= ~($DeadBits{$word}|$All) if $no_fatal ; |
| 639 |
|
|
} |
| 640 |
|
|
else |
| 641 |
|
|
{ Croaker("Unknown warnings category '$word'")} |
| 642 |
|
|
} |
| 643 |
|
|
|
| 644 |
|
|
return $mask ; |
| 645 |
|
|
} |
| 646 |
|
|
|
| 647 |
|
|
sub import |
| 648 |
|
|
{ |
| 649 |
|
|
shift; |
| 650 |
|
|
|
| 651 |
|
|
my $catmask ; |
| 652 |
|
|
my $fatal = 0 ; |
| 653 |
|
|
my $no_fatal = 0 ; |
| 654 |
|
|
|
| 655 |
|
|
my $mask = ${^WARNING_BITS} ; |
| 656 |
|
|
|
| 657 |
|
|
if (vec($mask, $Offsets{'all'}, 1)) { |
| 658 |
|
|
$mask |= $Bits{'all'} ; |
| 659 |
|
|
$mask |= $DeadBits{'all'} if vec($mask, $Offsets{'all'}+1, 1); |
| 660 |
|
|
} |
| 661 |
|
|
|
| 662 |
|
|
push @_, 'all' unless @_; |
| 663 |
|
|
|
| 664 |
|
|
foreach my $word ( @_ ) { |
| 665 |
|
|
if ($word eq 'FATAL') { |
| 666 |
|
|
$fatal = 1; |
| 667 |
|
|
$no_fatal = 0; |
| 668 |
|
|
} |
| 669 |
|
|
elsif ($word eq 'NONFATAL') { |
| 670 |
|
|
$fatal = 0; |
| 671 |
|
|
$no_fatal = 1; |
| 672 |
|
|
} |
| 673 |
|
|
elsif ($catmask = $Bits{$word}) { |
| 674 |
|
|
$mask |= $catmask ; |
| 675 |
|
|
$mask |= $DeadBits{$word} if $fatal ; |
| 676 |
|
|
$mask &= ~($DeadBits{$word}|$All) if $no_fatal ; |
| 677 |
|
|
} |
| 678 |
|
|
else |
| 679 |
|
|
{ Croaker("Unknown warnings category '$word'")} |
| 680 |
|
|
} |
| 681 |
|
|
|
| 682 |
|
|
${^WARNING_BITS} = $mask ; |
| 683 |
|
|
} |
| 684 |
|
|
|
| 685 |
|
|
sub unimport |
| 686 |
|
|
{ |
| 687 |
|
|
shift; |
| 688 |
|
|
|
| 689 |
|
|
my $catmask ; |
| 690 |
|
|
my $mask = ${^WARNING_BITS} ; |
| 691 |
|
|
|
| 692 |
|
|
if (vec($mask, $Offsets{'all'}, 1)) { |
| 693 |
|
|
$mask |= $Bits{'all'} ; |
| 694 |
|
|
$mask |= $DeadBits{'all'} if vec($mask, $Offsets{'all'}+1, 1); |
| 695 |
|
|
} |
| 696 |
|
|
|
| 697 |
|
|
push @_, 'all' unless @_; |
| 698 |
|
|
|
| 699 |
|
|
foreach my $word ( @_ ) { |
| 700 |
|
|
if ($word eq 'FATAL') { |
| 701 |
|
|
next; |
| 702 |
|
|
} |
| 703 |
|
|
elsif ($catmask = $Bits{$word}) { |
| 704 |
|
|
$mask &= ~($catmask | $DeadBits{$word} | $All); |
| 705 |
|
|
} |
| 706 |
|
|
else |
| 707 |
|
|
{ Croaker("Unknown warnings category '$word'")} |
| 708 |
|
|
} |
| 709 |
|
|
|
| 710 |
|
|
${^WARNING_BITS} = $mask ; |
| 711 |
|
|
} |
| 712 |
|
|
|
| 713 |
|
|
my %builtin_type; @builtin_type{qw(SCALAR ARRAY HASH CODE REF GLOB LVALUE Regexp)} = (); |
| 714 |
|
|
|
| 715 |
|
|
sub __chk |
| 716 |
|
|
{ |
| 717 |
|
|
my $category ; |
| 718 |
|
|
my $offset ; |
| 719 |
|
|
my $isobj = 0 ; |
| 720 |
|
|
|
| 721 |
|
|
if (@_) { |
| 722 |
|
|
# check the category supplied. |
| 723 |
|
|
$category = shift ; |
| 724 |
|
|
if (my $type = ref $category) { |
| 725 |
|
|
Croaker("not an object") |
| 726 |
|
|
if exists $builtin_type{$type}; |
| 727 |
|
|
$category = $type; |
| 728 |
|
|
$isobj = 1 ; |
| 729 |
|
|
} |
| 730 |
|
|
$offset = $Offsets{$category}; |
| 731 |
|
|
Croaker("Unknown warnings category '$category'") |
| 732 |
|
|
unless defined $offset; |
| 733 |
|
|
} |
| 734 |
|
|
else { |
| 735 |
|
|
$category = (caller(1))[0] ; |
| 736 |
|
|
$offset = $Offsets{$category}; |
| 737 |
|
|
Croaker("package '$category' not registered for warnings") |
| 738 |
|
|
unless defined $offset ; |
| 739 |
|
|
} |
| 740 |
|
|
|
| 741 |
|
|
my $this_pkg = (caller(1))[0] ; |
| 742 |
|
|
my $i = 2 ; |
| 743 |
|
|
my $pkg ; |
| 744 |
|
|
|
| 745 |
|
|
if ($isobj) { |
| 746 |
|
|
while (do { { package DB; $pkg = (caller($i++))[0] } } ) { |
| 747 |
|
|
last unless @DB::args && $DB::args[0] =~ /^$category=/ ; |
| 748 |
|
|
} |
| 749 |
|
|
$i -= 2 ; |
| 750 |
|
|
} |
| 751 |
|
|
else { |
| 752 |
|
|
for ($i = 2 ; $pkg = (caller($i))[0] ; ++ $i) { |
| 753 |
|
|
last if $pkg ne $this_pkg ; |
| 754 |
|
|
} |
| 755 |
|
|
$i = 2 |
| 756 |
|
|
if !$pkg || $pkg eq $this_pkg ; |
| 757 |
|
|
} |
| 758 |
|
|
|
| 759 |
|
|
my $callers_bitmask = (caller($i))[9] ; |
| 760 |
|
|
return ($callers_bitmask, $offset, $i) ; |
| 761 |
|
|
} |
| 762 |
|
|
|
| 763 |
|
|
sub enabled |
| 764 |
|
|
{ |
| 765 |
|
|
Croaker("Usage: warnings::enabled([category])") |
| 766 |
|
|
unless @_ == 1 || @_ == 0 ; |
| 767 |
|
|
|
| 768 |
|
|
my ($callers_bitmask, $offset, $i) = __chk(@_) ; |
| 769 |
|
|
|
| 770 |
|
|
return 0 unless defined $callers_bitmask ; |
| 771 |
|
|
return vec($callers_bitmask, $offset, 1) || |
| 772 |
|
|
vec($callers_bitmask, $Offsets{'all'}, 1) ; |
| 773 |
|
|
} |
| 774 |
|
|
|
| 775 |
|
|
|
| 776 |
|
|
sub warn |
| 777 |
|
|
{ |
| 778 |
|
|
Croaker("Usage: warnings::warn([category,] 'message')") |
| 779 |
|
|
unless @_ == 2 || @_ == 1 ; |
| 780 |
|
|
|
| 781 |
|
|
my $message = pop ; |
| 782 |
|
|
my ($callers_bitmask, $offset, $i) = __chk(@_) ; |
| 783 |
|
|
Carp::croak($message) |
| 784 |
|
|
if vec($callers_bitmask, $offset+1, 1) || |
| 785 |
|
|
vec($callers_bitmask, $Offsets{'all'}+1, 1) ; |
| 786 |
|
|
Carp::carp($message) ; |
| 787 |
|
|
} |
| 788 |
|
|
|
| 789 |
|
|
sub warnif |
| 790 |
|
|
{ |
| 791 |
|
|
Croaker("Usage: warnings::warnif([category,] 'message')") |
| 792 |
|
|
unless @_ == 2 || @_ == 1 ; |
| 793 |
|
|
|
| 794 |
|
|
my $message = pop ; |
| 795 |
|
|
my ($callers_bitmask, $offset, $i) = __chk(@_) ; |
| 796 |
|
|
|
| 797 |
|
|
return |
| 798 |
|
|
unless defined $callers_bitmask && |
| 799 |
|
|
(vec($callers_bitmask, $offset, 1) || |
| 800 |
|
|
vec($callers_bitmask, $Offsets{'all'}, 1)) ; |
| 801 |
|
|
|
| 802 |
|
|
Carp::croak($message) |
| 803 |
|
|
if vec($callers_bitmask, $offset+1, 1) || |
| 804 |
|
|
vec($callers_bitmask, $Offsets{'all'}+1, 1) ; |
| 805 |
|
|
|
| 806 |
|
|
Carp::carp($message) ; |
| 807 |
|
|
} |
| 808 |
|
|
|
| 809 |
|
|
1; |
