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# $Id$
package XML::SAX::PurePerl::Exception;
use strict;
use overload '""' => "stringify";
use vars qw/$StackTrace/;
$StackTrace = $ENV{XML_DEBUG} || 0;
sub throw {
my $class = shift;
die $class->new(@_);
}
sub new {
my $class = shift;
my %opts = @_;
die "Invalid options" unless exists $opts{Message};
if ($opts{reader}) {
return bless { Message => $opts{Message},
Exception => undef, # not sure what this is for!!!
ColumnNumber => $opts{reader}->column,
LineNumber => $opts{reader}->line,
PublicId => $opts{reader}->public_id,
SystemId => $opts{reader}->system_id,
$StackTrace ? (StackTrace => stacktrace()) : (),
}, $class;
}
return bless { Message => $opts{Message},
Exception => undef, # not sure what this is for!!!
}, $class;
}
sub stringify {
my $self = shift;
local $^W;
return $self->{Message} . " [Ln: " . $self->{LineNumber} .
", Col: " . $self->{ColumnNumber} . "]" .
($StackTrace ? stackstring($self->{StackTrace}) : "") . "\n";
}
sub stacktrace {
my $i = 2;
my @fulltrace;
while (my @trace = caller($i++)) {
my %hash;
@hash{qw(Package Filename Line)} = @trace[0..2];
push @fulltrace, \%hash;
}
return \@fulltrace;
}
sub stackstring {
my $stacktrace = shift;
my $string = "\nFrom:\n";
foreach my $current (@$stacktrace) {
$string .= $current->{Filename} . " Line: " . $current->{Line} . "\n";
}
return $string;
}
1;