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lib/Acme/JavaTrace.pm  view on Meta::CPAN

package Acme::JavaTrace;
use strict;

{
    no strict;
    $VERSION = '0.08';
}

# Install warn() and die() substitutes
$SIG{'__WARN__'} = \&_do_warn;
$SIG{'__DIE__' } = \&_do_die;

my $stderr = '';
my $in_eval = 0;
my %options = (
    showrefs => 0, 
);


# 
# import()
# ------
sub import {
    my $class = shift;
    
    for my $opt (@_) {
        exists $options{$opt} ? $options{$opt} = not $options{$opt}
                              : CORE::warn "warning: Unknown option: $opt\n"
    }
}


# 
# _use_data_dumper()
# ----------------
sub _use_data_dumper {
    require Data::Dumper;
    import Data::Dumper;
    $Data::Dumper::Indent = 1;      # no fancy indent
    $Data::Dumper::Terse  = 1;      # don't use $VAR unless needed
    $Data::Dumper::Sortkeys = 1;    # sort keys
    #$Data::Dumper::Deparse = 1;     # deparse code refs
    {
        local $^W = 0; 
        *Devel::SimpleTrace::_use_data_dumper = sub {};
    }
}


# 
# _do_warn()
# --------
sub _do_warn {
    local $SIG{'__WARN__'} = 'DEFAULT';
    
    my $msg = join '', @_;
    $msg =~ s/ at (.+?) line (\d+)\.$//;
    $stderr .= $msg;
    $stderr .= "\n" if substr($msg, -1, 1) ne "\n";
    
    _stack_trace($1, $2);
    
    print STDERR $stderr;
    $stderr = '';
    $in_eval = 0;
}


# 
# _do_die()
# -------
sub _do_die {
    local $SIG{'__WARN__'} = 'DEFAULT';
    local $SIG{'__DIE__' } = 'DEFAULT';
    
    CORE::die @_ if ref $_[0] and not $options{showrefs};
    CORE::die @_ if index($_[0], "\n\tat ") >= 0;
    my @args = @_;
    
    _use_data_dumper() if ref $args[0];
    my $msg = join '', map { ref $_ ? "Caught exception object: $_\: ".Dumper($_) : $_ } @args;
    $msg =~ s/ at (.+?) line (\d+)\.$//;
    $stderr .= $msg;
    $stderr .= "\n" if substr($msg, -1, 1) ne "\n";
    
    _stack_trace($1, $2);
    
    if($in_eval) {
        $@ = $stderr;
        $stderr = '';
        $in_eval = 0;
        CORE::die $@
        
    } else {
        print STDERR $stderr;
        $stderr = '';
        exit -1
    }
}


#