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|
# frozen_string_literal: true
require_relative "../command"
require_relative "../helpers/eval"
module Byebug
#
# Implements exception catching.
#
# Enables the user to catch unhandled assertion when they happen.
#
class CatchCommand < Command
include Helpers::EvalHelper
self.allow_in_post_mortem = true
def self.regexp
/^\s* cat(?:ch)? (?:\s+(\S+))? (?:\s+(off))? \s*$/x
end
def self.description
<<-DESCRIPTION
cat[ch][ (off|<exception>[ off])]
#{short_description}
catch -- lists catchpoints
catch off -- deletes all catchpoints
catch <exception> -- enables handling <exception>
catch <exception> off -- disables handling <exception>
DESCRIPTION
end
def self.short_description
"Handles exception catchpoints"
end
def execute
return info unless @match[1]
return @match[1] == "off" ? clear : add(@match[1]) unless @match[2]
return errmsg pr("catch.errors.off", off: cmd) unless @match[2] == "off"
remove(@match[1])
end
private
def remove(exception)
return errmsg pr("catch.errors.not_found", exception: exception) unless Byebug.catchpoints.member?(exception)
puts pr("catch.removed", exception: exception)
Byebug.catchpoints.delete(exception)
end
def add(exception)
errmsg pr("catch.errors.not_class", class: exception) if warning_eval(exception.is_a?(Class).to_s)
puts pr("catch.added", exception: exception)
Byebug.add_catchpoint(exception)
end
def clear
Byebug.catchpoints.clear if confirm(pr("catch.confirmations.delete_all"))
end
def info
if Byebug.catchpoints && !Byebug.catchpoints.empty?
Byebug.catchpoints.each_key do |exception|
puts("#{exception}: #{exception.is_a?(Class)}")
end
else
puts "No exceptions set to be caught."
end
end
end
end
|
