note
	description: "[
		Exception raised when $ is applied to melted feature
	]"
	library: "Free implementation of ELKS library"
	copyright: "Copyright (c) 1986-2006, Eiffel Software and others"
	license: "Eiffel Forum License v2 (see forum.txt)"
	date: "$Date: 2013-05-20 23:15:17 +0000 (Mon, 20 May 2013) $"
	revision: "$Revision: 92557 $"

class interface
	ADDRESS_APPLIED_TO_MELTED_FEATURE

create 
	default_create
			-- Process instances of classes with no creation clause.
			-- (Default: do nothing.)
			-- (from ANY)

feature -- Access

	frozen cause: EXCEPTION
			-- The cause of current exception raised during rescue processing
			-- (from EXCEPTION)
		ensure -- from EXCEPTION
			cause_not_void: Result /= Void

	frozen code: INTEGER_32
			-- Exception code

	description: detachable READABLE_STRING_32
			-- Detailed description of current exception.
			-- (from EXCEPTION)

	Exception_manager: EXCEPTION_MANAGER
			-- Exception manager
			-- (from EXCEPTION_MANAGER_FACTORY)
		ensure -- from EXCEPTION_MANAGER_FACTORY
			instance_free: class
			exception_manager_not_void: Result /= Void

	generating_type: TYPE [detachable ADDRESS_APPLIED_TO_MELTED_FEATURE]
			-- Type of current object
			-- (type of which it is a direct instance)
			-- (from ANY)
		ensure -- from ANY
			generating_type_not_void: Result /= Void

	generator: STRING_8
			-- Name of current object's generating class
			-- (base class of the type of which it is a direct instance)
			-- (from ANY)
		ensure -- from ANY
			generator_not_void: Result /= Void
			generator_not_empty: not Result.is_empty

	frozen line_number: INTEGER_32
			-- Line number
			-- (from EXCEPTION)

	frozen original: EXCEPTION
			-- The original exception directly triggered current exception
			-- (from EXCEPTION)
		ensure -- from EXCEPTION
			original_not_void: Result /= Void

	frozen recipient_name: detachable STRING_8
			-- Name of the routine whose execution was
			-- interrupted by current exception
			-- (from EXCEPTION)

	Tag: IMMUTABLE_STRING_32
			-- A short message describing what current exception is

	trace: detachable STRING_32
			-- String representation of current exception trace
			-- (from EXCEPTION)

	frozen type_name: detachable STRING_8
			-- Name of the class that includes the recipient
			-- of original form of current exception
			-- (from EXCEPTION)
	
feature -- Comparison

	frozen deep_equal (a: detachable ANY; b: like arg #1): BOOLEAN
			-- Are a and b either both void
			-- or attached to isomorphic object structures?
			-- (from ANY)
		ensure -- from ANY
			instance_free: class
			shallow_implies_deep: standard_equal (a, b) implies Result
			both_or_none_void: (a = Void) implies (Result = (b = Void))
			same_type: (Result and (a /= Void)) implies (b /= Void and then a.same_type (b))
			symmetric: Result implies deep_equal (b, a)

	frozen equal (a: detachable ANY; b: like arg #1): BOOLEAN
			-- Are a and b either both void or attached
			-- to objects considered equal?
			-- (from ANY)
		ensure -- from ANY
			instance_free: class
			definition: Result = (a = Void and b = Void) or else ((a /= Void and b /= Void) and then a.is_equal (b))

	frozen is_deep_equal alias "≡≡≡" (other: ADDRESS_APPLIED_TO_MELTED_FEATURE): BOOLEAN
			-- Are Current and other attached to isomorphic object structures?
			-- (from ANY)
		require -- from ANY
			other_not_void: other /= Void
		ensure -- from ANY
			shallow_implies_deep: standard_is_equal (other) implies Result
			same_type: Result implies same_type (other)
			symmetric: Result implies other.is_deep_equal (Current)

	is_equal (other: ADDRESS_APPLIED_TO_MELTED_FEATURE): BOOLEAN
			-- Is other attached to an object considered
			-- equal to current object?
			-- (from ANY)
		require -- from ANY
			other_not_void: other /= Void
		ensure -- from ANY
			symmetric: Result implies other ~ Current
			consistent: standard_is_equal (other) implies Result

	frozen standard_equal (a: detachable ANY; b: like arg #1): BOOLEAN
			-- Are a and b either both void or attached to
			-- field-by-field identical objects of the same type?
			-- Always uses default object comparison criterion.
			-- (from ANY)
		ensure -- from ANY
			instance_free: class
			definition: Result = (a = Void and b = Void) or else ((a /= Void and b /= Void) and then a.standard_is_equal (b))

	frozen standard_is_equal alias "≜" (other: ADDRESS_APPLIED_TO_MELTED_FEATURE): BOOLEAN
			-- Is other attached to an object of the same type
			-- as current object, and field-by-field identical to it?
			-- (from ANY)
		require -- from ANY
			other_not_void: other /= Void
		ensure -- from ANY
			same_type: Result implies same_type (other)
			symmetric: Result implies other.standard_is_equal (Current)
	
feature -- Status report

	conforms_to (other: ANY): BOOLEAN
			-- Does type of current object conform to type
			-- of other (as per Eiffel: The Language, chapter 13)?
			-- (from ANY)
		require -- from ANY
			other_not_void: other /= Void

	frozen is_caught: BOOLEAN
			-- If set, current exception is raised.
			-- (from EXCEPTION)
		ensure -- from EXCEPTION
			not_is_caught_implies_is_ignorable: not Result implies is_ignorable
			not_is_ignored: Result = not is_ignored

	frozen is_ignorable: BOOLEAN
			-- Is current exception ignorable?
			-- (from EXCEPTION)

	frozen is_ignored: BOOLEAN
			-- If set, current exception is not raised.
			-- (from EXCEPTION)
		ensure -- from EXCEPTION
			is_ignored_implies_is_ignorable: Result implies is_ignorable
			not_is_caught: Result = not is_caught

	frozen is_raisable: BOOLEAN
			-- Is current exception raisable by raise?
			-- (from EXCEPTION)

	same_type (other: ANY): BOOLEAN
			-- Is type of current object identical to type of other?
			-- (from ANY)
		require -- from ANY
			other_not_void: other /= Void
		ensure -- from ANY
			definition: Result = (conforms_to (other) and other.conforms_to (Current))
	
feature -- Duplication

	copy (other: ADDRESS_APPLIED_TO_MELTED_FEATURE)
			-- Update current object using fields of object attached
			-- to other, so as to yield equal objects.
			-- (from ANY)
		require -- from ANY
			other_not_void: other /= Void
			type_identity: same_type (other)
		ensure -- from ANY
			is_equal: Current ~ other

	frozen deep_copy (other: ADDRESS_APPLIED_TO_MELTED_FEATURE)
			-- Effect equivalent to that of:
			--		copy (other . deep_twin)
			-- (from ANY)
		require -- from ANY
			other_not_void: other /= Void
		ensure -- from ANY
			deep_equal: deep_equal (Current, other)

	frozen deep_twin: ADDRESS_APPLIED_TO_MELTED_FEATURE
			-- New object structure recursively duplicated from Current.
			-- (from ANY)
		ensure -- from ANY
			deep_twin_not_void: Result /= Void
			deep_equal: deep_equal (Current, Result)

	frozen standard_copy (other: ADDRESS_APPLIED_TO_MELTED_FEATURE)
			-- Copy every field of other onto corresponding field
			-- of current object.
			-- (from ANY)
		require -- from ANY
			other_not_void: other /= Void
			type_identity: same_type (other)
		ensure -- from ANY
			is_standard_equal: standard_is_equal (other)

	frozen standard_twin: ADDRESS_APPLIED_TO_MELTED_FEATURE
			-- New object field-by-field identical to other.
			-- Always uses default copying semantics.
			-- (from ANY)
		ensure -- from ANY
			standard_twin_not_void: Result /= Void
			equal: standard_equal (Result, Current)

	frozen twin: ADDRESS_APPLIED_TO_MELTED_FEATURE
			-- New object equal to Current
			-- twin calls copy; to change copying/twinning semantics, redefine copy.
			-- (from ANY)
		ensure -- from ANY
			twin_not_void: Result /= Void
			is_equal: Result ~ Current
	
feature -- Basic operations

	frozen default: detachable ADDRESS_APPLIED_TO_MELTED_FEATURE
			-- Default value of object's type
			-- (from ANY)

	frozen default_pointer: POINTER
			-- Default value of type POINTER
			-- (Avoid the need to write p.default for
			-- some p of type POINTER.)
			-- (from ANY)
		ensure -- from ANY
			instance_free: class

	default_rescue
			-- Process exception for routines with no Rescue clause.
			-- (Default: do nothing.)
			-- (from ANY)

	frozen do_nothing
			-- Execute a null action.
			-- (from ANY)
		ensure -- from ANY
			instance_free: class
	
feature -- Output

	Io: STD_FILES
			-- Handle to standard file setup
			-- (from ANY)
		ensure -- from ANY
			instance_free: class
			io_not_void: Result /= Void

	out: STRING_8
			-- New string containing terse printable representation
			-- of current object
			-- (from EXCEPTION)
		ensure -- from ANY
			out_not_void: Result /= Void

	print (o: detachable ANY)
			-- Write terse external representation of o
			-- on standard output.
			-- (from ANY)
		ensure -- from ANY
			instance_free: class

	frozen tagged_out: STRING_8
			-- New string containing terse printable representation
			-- of current object
			-- (from ANY)
		ensure -- from ANY
			tagged_out_not_void: Result /= Void
	
feature -- Platform

	Operating_environment: OPERATING_ENVIRONMENT
			-- Objects available from the operating system
			-- (from ANY)
		ensure -- from ANY
			instance_free: class
			operating_environment_not_void: Result /= Void
	
feature -- Raise

	raise
			-- Raise current exception
			-- (from EXCEPTION)
		require -- from EXCEPTION
			is_raisable: is_raisable
	
feature -- Status settings

	set_description (a_description: detachable READABLE_STRING_GENERAL)
			-- Set description with a_description.
			-- (from EXCEPTION)
		ensure -- from EXCEPTION
			description_set: (attached a_description as a_des and then attached description as l_des and then a_des.same_string (l_des)) or else (a_description = Void and then description = Void)
	
invariant
		-- from ANY
	reflexive_equality: standard_is_equal (Current)
	reflexive_conformance: conforms_to (Current)

end -- class ADDRESS_APPLIED_TO_MELTED_FEATURE

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