Simple Math State Machine

simplemath_c.rl

#include <string.h>
#include <stdio.h>

%%{
  machine simplemath;
  number = digit+;
  operator = '+';
  main := (digit operator digit) 0 @{ res = 1; };
}%%

%% write data;

int main(int argc, char **argv) {
  int cs, res = 0;
  if ( argc > 1 ) {
      char *p = argv[1];
      char *pe = p + strlen(p) + 1;
      %% write init;
      %% write exec;
  }
  printf("result = %i\n", res );
  return 0;
}

simplemath_go.rl

package main

import (
  "os"
)

%%{
  machine simplemath;
  number = digit+;
  operator = '+';
  main := (digit operator digit) 0 @{ println("Success!") };
}%%

%% write data;

func main() {
  cs, res := 0, 0
  if(len(os.Args) > 1) {
    data := os.Args[1]
    p := 0
    pe := len(data) - 1
    %% write init;
    %% write exec;
  }
  println("result = ", res)
}