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package main

//go:generate -command yacc go tool yacc
//go:generate yacc -o parser.go parser.y

import (
	"bufio"
	"flag"
	"io"
	"os"
)

const prefix = "      " // six spaces

func init() {
	flag.IntVar(&yyDebug, "debug", 1, "debug level")
	flag.Parse()
}

func main() {
	in := bufio.NewReader(os.Stdin)
	for {
		os.Stdout.WriteString(prefix)
		line, err := in.ReadString('\n')
		if err == io.EOF {
			return
		}
		yyParse(lex(line))
	}
}