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-- re2hs $INPUT -o $OUTPUT -i
{-# OPTIONS_GHC -Wno-unused-record-wildcards #-}
{-# LANGUAGE OverloadedStrings #-}
import Control.Monad (when)
import Data.ByteString (ByteString, index)
%{include "definitions.hs" %}
data State = State {
_yyinput :: ByteString,
_yycursor :: Int,
_yymarker :: Int,
_yyaccept :: Int
}
%{
re2c:YYFN = ["lexer;Number", "State{..};State"];
re2c:yyfill:enable = 0;
* { NNaN }
number { INum }
!include "extra_rules.re.inc";
%}
main :: IO ()
main = do
let test s n = do
let st = State {
_yyinput = s,
_yycursor = 0,
_yymarker = 0,
_yyaccept = 0}
when (lexer st /= n) $ error "failed"
test "123\0" INum
test "123.4567\0" FNum
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