--- /dev/null
+USING: math random tools.test ;
+IN: dice
+
+{ [ 0 1 [ 4 random + 1 + ] times ] } [ "1d4" parse-roll ] unit-test
+{ [ 0 15 [ 45 random + 1 + ] times ] } [ "15d45" parse-roll ] unit-test
! Copyright (C) 2010 John Benediktsson
! See http://factorcode.org/license.txt for BSD license
-
USING: fry kernel lexer macros math math.parser peg.ebnf random
-sequences strings ;
-
+sequences ;
IN: dice
EBNF: parse-roll
-number = ([0-9])+ => [[ >string string>number ]]
+number = ([0-9])+ => [[ string>number ]]
dice = "d" number => [[ second '[ _ random ] ]]
roll = number dice => [[ first2 '[ 0 _ [ @ + 1 + ] times ] ]]
added = "+" number => [[ second '[ _ + ] ]]
MACRO: roll ( string -- ) parse-roll ;
-SYNTAX: ROLL: scan-token parse-roll append ;
-
+SYNTAX: ROLL: scan-token parse-roll append! ;