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pry--pry/lib/pry/last_exception.rb

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2014-03-17 06:27:43 -04:00
#
# {Pry::LastException} is a proxy class who wraps an Exception object for
# {Pry#last_exception}. it extends the exception object with methods that
# help pry commands be useful.
#
# the original exception object is not modified and method calls are forwarded
# to the wrapped exception object.
#
class Pry::LastException < BasicObject
attr_accessor :bt_index
def initialize(e)
@e = e
@bt_index = 0
@file, @line = bt_source_location_for(0)
end
def method_missing(name, *args, &block)
if @e.respond_to?(name)
@e.public_send(name, *args, &block)
else
super
end
end
def respond_to_missing?(name, include_private = false)
@e.respond_to?(name)
end
2014-03-17 06:27:43 -04:00
#
# @return [String]
# returns the path to a file for the current backtrace. see {#bt_index}.
#
def file
@file
end
#
# @return [Fixnum]
# returns the line for the current backtrace. see {#bt_index}.
#
def line
@line
end
# @return [Exception]
# returns the wrapped exception
#
def wrapped_exception
@e
end
def bt_source_location_for(index)
backtrace[index] =~ /(.*):(\d+)/
[$1, $2.to_i]
end
def inc_bt_index
@bt_index = (@bt_index + 1) % backtrace.size
end
end