Class: Pry::LastException

Inherits:
BasicObject
Defined in:
lib/pry/last_exception.rb

Overview

LastException is a proxy class who wraps an Exception object for #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.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(e) ⇒ LastException

Returns a new instance of LastException.



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# File 'lib/pry/last_exception.rb', line 12

def initialize(e)
  @e = e
  @bt_index = 0
  @file, @line = bt_source_location_for(0)
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(name, *args, &block) ⇒ Object 



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# File 'lib/pry/last_exception.rb', line 18

def method_missing(name, *args, &block)
  if @e.respond_to?(name)
    @e.public_send(name, *args, &block)
  else
    super
  end
end

Instance Attribute Details

#bt_index ⇒ Object

Returns the value of attribute bt_index.



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# File 'lib/pry/last_exception.rb', line 10

def bt_index
  @bt_index
end

Instance Method Details

#bt_source_location_for(index) ⇒ Object 



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# File 'lib/pry/last_exception.rb', line 53

def bt_source_location_for(index)
  backtrace[index] =~ /(.*):(\d+)/
  [$1, $2.to_i]
end

#file ⇒ String

Returns the path to a file for the current backtrace. see #bt_index.

Returns:

  • (String) —

    returns the path to a file for the current backtrace. see #bt_index.



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# File 'lib/pry/last_exception.rb', line 34

def file
  @file
end

#inc_bt_index ⇒ Object 



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# File 'lib/pry/last_exception.rb', line 58

def inc_bt_index
  @bt_index = (@bt_index + 1) % backtrace.size
end

#line ⇒ Fixnum

Returns the line for the current backtrace. see #bt_index.

Returns:

  • (Fixnum) —

    returns the line for the current backtrace. see #bt_index.



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# File 'lib/pry/last_exception.rb', line 42

def line
  @line
end

#respond_to_missing?(name, include_private = false) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/pry/last_exception.rb', line 26

def respond_to_missing?(name, include_private = false)
  @e.respond_to?(name)
end

#wrapped_exception ⇒ Exception

Returns the wrapped exception

Returns:

  • (Exception) —

    returns the wrapped exception



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# File 'lib/pry/last_exception.rb', line 49

def wrapped_exception
  @e
end