%{

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

#define YYSTYPE void *
	#include "list.h"
	#include "cmp.h"
	#include "y.tab.h"
	#include "shared.h"
	#include "mem.h"
	int quit = 0;

	int int_v = 0x10;
	int float_v = 0x11;
    int *int_var= &int_v;   
    int *float_var = &float_v;
   

	int true_v = 0x12;
	int false_v = 0x13;
    int *true_var = &true_v;
    int *false_var = &false_v;
	int int_val = 0;
	double float_val = 0;
	void *installID();
	void setForBool();
	void *last_id;
%}
	/*keep track of the line numbers*/
%option yylineno
letter [A-Za-z]
digit [0-9]

basic 	int|float
id 		{letter}({letter}|{digit})*
num 	[+-]?[0-9]+
real 		{num}(\.{digit}*)?(E{num})?
bool_var  "true"|"false"

EOF <<EOF>>
%%


{bool_var}	{setForBool();
			printf("%s",(char*)yytext);
			return BOOL;
			 }
{basic} 	{
			if(strcmp((char*)yytext,"int") == 0 ) {yylval =(void*) int_var; }
            else if(strcmp((char*)yytext,"char")==0) {yylval=(void*) char_var;}
            else if(strcmp((char*)yytext,"bool")==0) {yylval=(void*) bool_var;}
			else { yylval = (void*) float_var;}
			printf("basic");
			return BASIC;
			 }
	


"while" {yylval = NULL; printf("while"); return WHILE; }
"do"	{yylval = NULL; printf("do");	return DO; }
"if"	{yylval= NULL; printf("if");	return IF;}
"else"	{yylval = NULL; printf("else"); return ELSE;}
"break"	{yylval = NULL; printf("break");return BREAK;}
"continue"	{yylval = NULL; printf("continue");  return CONTINUE;}
^quit$ {quit = 1; return QUIT;}
{id} 		{last_id = installID();yylval=last_id; printf("id");  return ID;} 

{num} 	{ 	int_val = atoi(yytext);
			yylval = (void*)&int_val;
			printf("num: %d",int_val);
			 return NUM;
		}
{real} 	{	float_val = atof(yytext);
			yylval = (void*)&float_val;
			printf("real");
			return REAL;
		}
"<=" {yylval = yytext;printf("%s",(char*)yytext); return LE_OP;}
">=" {yylval=yytext;printf("%s",(char*)yytext); return GE_OP;}
"==" {yylval=yytext;printf("%s",(char*)yytext); return EQ_OP;}
"!=" {yylval=yytext;printf("%s",(char*)yytext); return NE_OP;}
"&&" {yylval=yytext;printf("%s",(char*)yytext); return AND_OP;}
"||" {yylval=yytext;printf("%s",(char*)yytext); return OR_OP;}
	/*these are needed so that the parser doesn't ignore the single character stuff I need*/
";"|"+"|"-"|"*"|"/"|"!"|"["|"]"|"{"|"}"|"("|")"|"="|"<"|">"  {yylval=yytext;printf("%s",(char*)yytext);return yytext[0];}
\n|. {printf("%s",yytext);}
%%
//list_head_t *list;
	/*takes whatever is in yytext and treats it as an ID, inserting it into a list*/
void *installID() {
		char *new_str = memcalloc(yyleng, sizeof(char));
		strncpy(new_str,(char*)yytext,yyleng);
		last_id = new_str;
		return new_str;
}	
	
int yywrap() {
	return 1;
}
	/*for booleans, sets yylval to true or false*/
void setForBool() {
	if(strcmp((char*)yytext, "true") == 0) {
				yylval = (void*)true_var;
	} else if(strcmp((char*)yytext, "false") == 0) {
				yylval = (void*)false_var;
	} else {
				yylval = NULL;
	}
}