toy.l

%{
  # include "ast.h"
  # include "sym.h"
  # include "toy.tab.h"

# include <string.h>
%}
 

%%
"bool"    {return BOOL;}
"int"     {return INT;}
"true"    {return TRUE;}
"false"   {return FALSE;}
"void"    {return VOID;}
"printf"  {return PRINTF;}
"string"  {return STRING;}
"struct"  {return STRUCT;}
"if"      {return IF;}
"then"    {return THEN;}
"else"    {return ELSE;}
"for"     {return FOR;}
"and"     {return AND;}
"or"      {return OR;}
"not"     {return NOT;}
"mod"     {return MOD;}
"return"  {return RETURN;}

[_a-zA-Z][_a-zA-Z0-9]* {yylval.str = strdup(yytext); return ID;}



-?[1-9][0-9]*|0 {
  yylval.val = atoi(yytext);
  return NUMBER;}

["][^\\"]*["] {return STRING_LITERAL;}



"=="  {return EQU;}
"<="  {return LTE;}
">="  {return GTE;}
"!="  {return NEQ;}
"{"   {return OB;}
"}"   {return CB;}
";"   {return SEMICOLON;}
"!"   {return NEGATE;}
"("   {return OP;}
")"   {return CP;}
"+"   {return ADD;}
"-"   {return SUB;}
"."   {return DOT;}
","   {return COMMA;}
"*"   {return MUL;}
"/"   {return DIV;}
"="   {return ASSIGN;}
"<"   {return LT;}
">"   {return GT;}

(\/\/|##).*(\n) {}

[ \n\t]+ { }





%%