/#
	Copyright 2021 Kyle Gunger

	This file is licensed under the CDDL 1.0 (the License)
	and may only be used in accordance with the License.
	You should have received a copy of the License with this
	software/source code. If you did not, a copy can be found
	at the following URL:

	https://opensource.org/licenses/CDDL-1.0

	THIS SOFTWARE/SOURCE CODE IS PROVIDED "AS IS" WITH NO
	WARRANTY, GUARANTEE, OR CLAIM OF FITNESS FOR ANY PURPOSE
	EXPRESS OR IMPLIED
#/

/; is_space (charp c) [bool]
	;return c == '\t' || c == '\n' || c == ' '
;/

/; is_digit (charp c) [bool]
	;return c !< '0' && c !> '9'
;/

/; break_token ({}charp dat, charp c) [bool]
	/; if (len dat == 0)
		;return false
	
	;; else if (is_in_string(~RESERVED, dat{len dat - 1}))
		/; if (is_in_string(~RESERVED, c))
			;dat.append(c)
			;return get_token_type(~dat) == TOKEN_TYPE.DEFWORD
		;; else if (len dat == 1 && dat{0} == '.')
			;return !is_digit(c)
		;/
		;return true
	;/
	;return is_space(c)
;/

/; parse_reserved ({}charp dat) [{}Token]

;/

/; tokenize (tnsl.io.File fstr) [~{}Token]
	;{}Token out = {}
	;{}charp tdat = {}

	/; loop (int i = fstr.read(); i !== -1) [i = fstr.read()]
		/; if (break_token(tdat, i))
			/; if (len tdat > 0)
				;{}charp tmp = tdat
				;Token ttk = {get_token_type(~tmp), 0, 0, ~tmp}
				;out.append(ttk)
				;tdat = {}
			;/
		;/
		/; if ( !is_space(i) )
			;tdat.append(i)
		;/
	;/

	/; if (len tdat > 0)
	;/

	;tnsl.io.println(tdat)

	;return ~out
;/