module Backup::NestedExceptions
Provides cascading errors with formatted messages. See the specs for details.
Public Class Methods
included(klass)
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# File lib/backup/errors.rb, line 5 def self.included(klass) klass.extend Module.new { def wrap(wrapped_exception, msg = nil) new(msg, wrapped_exception) end } end
new(obj = nil, wrapped_exception = nil)
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Calls superclass method
# File lib/backup/errors.rb, line 13 def initialize(obj = nil, wrapped_exception = nil) @wrapped_exception = wrapped_exception msg = (obj.respond_to?(:to_str) ? obj.to_str : obj.to_s) .gsub(/^ */, " ").strip msg = clean_name(self.class.name) + (msg.empty? ? "" : ": #{msg}") if wrapped_exception msg << "\n--- Wrapped Exception ---\n" class_name = clean_name(wrapped_exception.class.name) msg << class_name + ": " unless wrapped_exception.message.start_with? class_name msg << wrapped_exception.message end super(msg) set_backtrace(wrapped_exception.backtrace) if wrapped_exception end
Public Instance Methods
exception(obj = nil)
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# File lib/backup/errors.rb, line 31 def exception(obj = nil) return self if obj.nil? || equal?(obj) ex = self.class.new(obj, @wrapped_exception) ex.set_backtrace(backtrace) unless ex.backtrace ex end
Private Instance Methods
clean_name(name)
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# File lib/backup/errors.rb, line 41 def clean_name(name) name.sub(/^Backup::/, "") end