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.\" ========================================================================
.\"
.IX Title "Catalyst::Plugin::StackTrace 3pm"
.TH Catalyst::Plugin::StackTrace 3pm "2022-10-14" "perl v5.34.0" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
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.SH "NAME"
Catalyst::Plugin::StackTrace \- Display a stack trace on the debug screen
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\&    use Catalyst qw/\-Debug StackTrace/;
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
This plugin will enhance the standard Catalyst debug screen by including
a stack trace of your appliation up to the point where the error occurred.
Each stack frame is displayed along with the package name, line number, file
name, and code context surrounding the line number.
.PP
This plugin is only active in \-Debug mode by default, but can be enabled by
setting the \f(CW\*(C`enable\*(C'\fR config option.
.SH "CONFIGURATION"
.IX Header "CONFIGURATION"
Configuration is optional and is specified in MyApp\->config\->{stacktrace}.
.SS "enable"
.IX Subsection "enable"
Allows you forcibly enable or disalbe this plugin, ignoring the current 
debug setting. If this option is defined, its value will be used.
.SS "context"
.IX Subsection "context"
The number of context lines of code to display on either side of the stack
frame line.  Defaults to 3.
.SS "reverse"
.IX Subsection "reverse"
By default, the stack frames are shown in from \*(L"top\*(R" to \*(L"bottom\*(R"
(newest to oldest). Enabling this option reverses the stack frames so they will
be displayed \*(L"bottom\*(R" to \*(L"top\*(R", or from the callers perspective.
.SS "verbose"
.IX Subsection "verbose"
This option sets the amount of stack frames you want to see in the stack
trace.  It defaults to 0, meaning only frames from your application's
namespace are shown.  You can use levels 1 and 2 for deeper debugging.
.PP
If set to 1, the stack trace will include frames from packages outside of
your application's namespace, but not from most of the Catalyst internals.
Packages ignored at this level include:
.PP
.Vb 9
\&    Catalyst
\&    Catalyst::Action
\&    Catalyst::Base
\&    Catalyst::Dispatcher
\&    Catalyst::Engine::*
\&    Catalyst::Plugin::StackTrace
\&    Catalyst::Plugin::Static::Simple
\&    NEXT
\&    main
.Ve
.PP
If set to 2, the stack trace will include frames from everything except this
module.
.SH "INTERNAL METHODS"
.IX Header "INTERNAL METHODS"
The following methods are extended by this plugin.
.IP "execute" 4
.IX Item "execute"
In execute, we create a local die handler to generate the stack trace.
.IP "finalize_error" 4
.IX Item "finalize_error"
In finalize_error, we inject the stack trace \s-1HTML\s0 into the debug screen below
the error message.
.IP "setup" 4
.IX Item "setup"
.SH "SEE ALSO"
.IX Header "SEE ALSO"
Catalyst
.SH "AUTHORS"
.IX Header "AUTHORS"
Andy Grundman, <andy@hybridized.org>
.PP
Matt S. Trout, <mst@shadowcatsystems.co.uk>
.SH "THANKS"
.IX Header "THANKS"
The authors of CGI::Application::Plugin::DebugScreen, from which a lot of
code was used.
.SH "COPYRIGHT"
.IX Header "COPYRIGHT"
Copyright (c) 2005 \- 2009
the Catalyst::Plugin::StackTrace \*(L"\s-1AUTHORS\*(R"\s0
as listed above.
.SH "LICENSE"
.IX Header "LICENSE"
This program is free software, you can redistribute it and/or modify it
under the same terms as Perl itself.