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/*
A D D I T I O N . C
*/
#include "iccomp.h"
ESTRUC_ *addition (lval, rval)
ESTRUC_
*lval,
*rval;
{
register E_TYPE_
type;
if (test_binop(op_add, lval, rval))
return (lval); /* test for correct types */
btoi(lval); /* convert pending booleans */
btoi(rval);
if (conflict(lval, rval, op_add)) /* test type conflict */
return(lval);
type = lval->type; /* keep type for later */
if ((type & rval->type & ~ALLTYPES) == e_const)
{
if (test_type(lval, e_int))
lval->evalue += rval->evalue;
else if (test_type(lval, e_str))
catstrings(lval, rval); /* create (cat) new string */
}
else
{
defcode(lval, rval, op_add);
set_type(lval, (type & ALLTYPES) | e_code);
}
return (lval); /* return new expression */
}
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