{\rtf1\ansi\ansicpg1252\cocoartf1187\cocoasubrtf390
{\fonttbl\f0\fmodern\fcharset0 Courier;}
{\colortbl;\red255\green255\blue255;}
\margl1440\margr1440\vieww10800\viewh8400\viewkind0
\deftab720
\pard\pardeftab720

\f0\fs26 \cf0 /* DJ PARSER */\
\
%\{\
  #include <stdio.h> \
  #include "lex.yy.c"\
 \
  void yyerror(const char *str) \{\
    printf("Syntax error on line %d at token %s\\n",yylineno,yytext);\
    printf("(This version of the compiler exits after finding the first ");\
    printf("syntax error.)\\n");\
    exit(-1);\
  \}\
%\}\
\
%token MAIN CLASS EXTENDS NATTYPE IF ELSE WHILE\
%token PRINTNAT READNAT THIS NEW NUL NATLITERAL \
%token ID ASSIGN PLUS MINUS TIMES EQUALITY GREATER \
%token AND NOT DOT SEMICOLON COMMA LBRACE RBRACE \
%token LPAREN RPAREN ENDOFFILE\
\
%start pgm\
\
%right ASSIGN\
\
%%\
\
pgm : ENDOFFILE \
	\{ return 0; \}\
    ;\
\
%%\
\
int main(int argc, char **argv) \{\
  if(argc!=2) \{\
    printf("Usage: dj-parse filename\\n");\
    exit(-1);\
  \}\
  yyin = fopen(argv[1],"r");\
  if(yyin==NULL) \{\
    printf("ERROR: could not open file %s\\n",argv[1]);\
    exit(-1);\
  \}\
  /* parse the input program */\
  return yyparse();\
\}\
}