/*************************************************************************

* File Name: type.c

* Author: Li Peng

* Mail: flyingsheep.lp@gmail.com

* Created Time: 2013-11-08 16:13:38

* Description:

************************************************************************/

#include <stdio.h>

#include <string.h>

#include <stdlib.h>

#include "include/token.h"

#include "include/tag.h"

#include "include/global.h"

#define isequal(p1,p2) \

((p1->tag == p2->tag) && \

(p1->detail.type.width == p2->detail.type.width) && \

!strcmp(p1->detail.type.name,p2->detail.type.name))

var_type Type(char* s,int t,int w){

var_type v = (var_type)malloc(sizeof(struct _token));

v->tag = t;

v->detail.type.width = w;

v->detail.type.name = (char*)malloc(strlen(s) + 1);

strcpy(v->detail.type.name,s);

return v;

}

/*

static int isequal(var_type p1,var_type p2){

return (p1->tag == p2->tag) && (p1->width == p2->width) && !strcmp(p1->name,p2->name);

}

*/

static int isnumeric(var_type p){

return isequal(p,TYPE_CHAR) || isequal(p,TYPE_INT) || isequal(p,TYPE_FLOAT);

}

var_type max(var_type p1,var_type p2){

if(!isnumeric(p1) || !isnumeric(p2))

return NULL;

else if(isequal(p1,TYPE_FLOAT) || isequal(p2,TYPE_FLOAT))

return TYPE_FLOAT;

else if(isequal(p1,TYPE_INT) || isequal(p2,TYPE_INT))

return TYPE_INT;

else

return TYPE_CHAR;

}