2014-03-17 06:27:43 -04:00
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#
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# {Pry::LastException} is a proxy class who wraps an Exception object for
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# {Pry#last_exception}. it extends the exception object with methods that
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# help pry commands be useful.
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#
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# the original exception object is not modified and method calls are forwarded
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# to the wrapped exception object.
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#
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2014-03-09 20:28:12 -04:00
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class Pry::LastException < BasicObject
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attr_accessor :bt_index
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def initialize(e)
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@e = e
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@bt_index = 0
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@file, @line = bt_source_location_for(0)
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end
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def method_missing(name, *args, &block)
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if @e.respond_to?(name)
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@e.public_send(name, *args, &block)
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else
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super
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end
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end
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2014-03-09 22:39:01 -04:00
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def respond_to_missing?(name, include_private = false)
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2014-03-09 20:28:12 -04:00
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@e.respond_to?(name)
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end
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2014-03-17 06:27:43 -04:00
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#
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# @return [String]
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# returns the path to a file for the current backtrace. see {#bt_index}.
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#
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def file
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@file
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end
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#
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# @return [Fixnum]
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# returns the line for the current backtrace. see {#bt_index}.
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#
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def line
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@line
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end
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# @return [Exception]
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# returns the wrapped exception
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#
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2014-03-09 22:39:01 -04:00
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def wrapped_exception
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@e
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2014-03-09 20:28:12 -04:00
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end
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def bt_source_location_for(index)
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backtrace[index] =~ /(.*):(\d+)/
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[$1, $2.to_i]
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end
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def inc_bt_index
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@bt_index = (@bt_index + 1) % backtrace.size
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end
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end
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