note
	description: "Convertor to do string to integer/natural conversion"
	library: "Free implementation of ELKS library"
	status: "See notice at end of class."
	legal: "See notice at end of class."
	date: "$Date: 2017-03-28 12:36:24 +0000 (Tue, 28 Mar 2017) $"
	revision: "$Revision: 100064 $"

frozen class interface
	STRING_TO_INTEGER_CONVERTOR

create 
	make

feature -- State machine setting

	reset (type: INTEGER_32)
			-- Reset current convertor to parse integer of type type.
		ensure then
			internal_overflowed_set: not internal_overflowed
			part1_set: part1 = 0
			part2_set: part2 = 0
	
feature -- Status report

	separators_valid (separators: STRING_8): BOOLEAN
			-- Are separators contained in separators valid?

	overflowed: BOOLEAN
			-- Is integer parsed so far overflowed?

	underflowed: BOOLEAN
			-- Is integer parsed so fa underflowed?

	parse_successful: BOOLEAN
			-- This only means we didn't enter an invalid state when parsing,
			-- it doesn't mean that we have got an valid integer.
			-- You need to check is_integral_integer or is_part_of_integer.

	conversion_type_valid (type: INTEGER_32): BOOLEAN
			-- If conversion type valid?

	is_part_of_integer: BOOLEAN
			-- Is character sequence that has been parsed so far a valid start part of an integer?

	is_integral_integer: BOOLEAN
			-- Is character sequence that has been parsed so far a valid integral integer?
	
feature -- String parsing

	parse_string_with_type (s: READABLE_STRING_GENERAL; type: INTEGER_32)
			-- Parse string s as integer of type type.

	parse_character (c: CHARACTER_8)
			-- Parse next character c.
	
feature -- Access

	parsed_integer_8: INTEGER_8
			-- INTEGER_8 representation of parsed string

	parsed_integer_16: INTEGER_16
			-- INTEGER_16 representation of parsed string

	parsed_integer_32: INTEGER_32
			-- INTEGER representation of parsed string
			-- Was declared in STRING_TO_INTEGER_CONVERTOR as synonym of parsed_integer.

	parsed_integer: INTEGER_32
			-- INTEGER representation of parsed string
			-- Was declared in STRING_TO_INTEGER_CONVERTOR as synonym of parsed_integer_32.

	parsed_integer_64: INTEGER_64
			-- INTEGER_64 representation of parsed string

	parsed_natural_8: NATURAL_8
			-- NATURAL_8 representation of parsed string

	parsed_natural_16: NATURAL_16
			-- NATURAL_16 representation of parsed string

	parsed_natural_32: NATURAL_32
			-- NATURAL_32 representation of parsed string
			-- Was declared in STRING_TO_INTEGER_CONVERTOR as synonym of parsed_natural.

	parsed_natural: NATURAL_32
			-- NATURAL_32 representation of parsed string
			-- Was declared in STRING_TO_INTEGER_CONVERTOR as synonym of parsed_natural_32.

	parsed_natural_64: NATURAL_64
			-- NATURAL_64 representation of parsed string
	
note
	copyright: "Copyright (c) 1984-2017, Eiffel Software and others"
	license: "Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt)"
	source: "[
		Eiffel Software
		5949 Hollister Ave., Goleta, CA 93117 USA
		Telephone 805-685-1006, Fax 805-685-6869
		Website http://www.eiffel.com
		Customer support http://support.eiffel.com
	]"

end -- class STRING_TO_INTEGER_CONVERTOR

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