/**
 * Copyright 2014-2019 the original author or authors
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */

/** 
 * Dice notation lexical rules.
 */
lexer grammar DiceNotationLexer;

/**
 * Tokens.
 */

// Dice markers

DSEPARATOR
:
   ( 'd' | 'D' )
;

DIGIT
:
   ('0'..'9')+
;

// Operation tokens

ADDOPERATOR
:
   ( ADD | SUB )
;

MULTOPERATOR
:
   ( MULT | DIV )
;

fragment ADD
:
   '+'
;

fragment SUB
:
   '-'
;

fragment MULT
:
   '*'
;

fragment DIV
:
   '/'
;

LPAREN
:
   '('
;

RPAREN
:
   ')'
;

// Skippable tokens

WS:
   [\t\r\n]+ -> skip
;
