note
	description: "String to real/double convertor"
	library: "Free implementation of ELKS library"
	status: "See notice at end of class."
	legal: "See notice at end of class."
	date: "$Date: 2017-03-23 19:18:26 +0000 (Thu, 23 Mar 2017) $"
	revision: "$Revision: 100033 $"

frozen class interface
	STRING_TO_REAL_CONVERTOR

create 
	make

feature -- Status reporting

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

	overflowed: BOOLEAN
			-- Is real number parsed so far overflowed?

	underflowed: BOOLEAN
			-- Is real number parsed so far 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 double/real number.
			-- You need to check is_double or is_real.

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

	is_integral_double: BOOLEAN
			-- Is character sequence that has been parsed represents a valid double?

	is_integral_real: BOOLEAN
			-- Is character sequence that has been parsed represents a valid real?	

	is_part_of_double: BOOLEAN
			-- Is character sequence that has been parsed so far a valid start part of double?

	is_part_of_real: BOOLEAN
			-- Is character sequence that has been parsed so far a valid start part of real?

	parsed_double: REAL_64
			-- Parsed double value

	parsed_real: REAL_32
			-- Parsed real value
	
feature -- Status setting

	reset (type: INTEGER_32)
			-- Reset current convertor to parse real number string of type type.
		ensure then
			natural_part_set: natural_part = 0.to_double
			fractional_part_set: fractional_part = 0.to_double
			fractional_divider_set: fractional_divider = 0.to_double
			exponent_set: exponent = 0
			is_negative_set: not is_negative
			has_negative_exponent_set: not has_negative_exponent
			has_fractional_part_set: not has_fractional_part
			needs_digit_set: not needs_digit
	
feature -- Parse

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

	parse_character (c: CHARACTER_8)
			-- Parse character c.
	
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_REAL_CONVERTOR

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