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#include <Expr.h>
#include <assert.h>
Add::Add(Expr *e1, Expr *e2)
{
_result.TypePtr(e1->eval_type());
_left = e1;
_right = e2;
}
Add::~Add()
{
delete _left;
delete _right;
}
void Add::print(ostream &o) const
{
PrintBinaryExpression(o,*_left,"+",*_right);
}
const TypedValue &Add::eval(ValueStore &t)
{
const TypedValue &left = _left->eval(t);
const TypedValue &right = _right->eval(t);
if(!left.HasValue() || !right.HasValue())
{
_result.ResetValue();
return _result;
}
switch(left.Type())
{
case TypeInt:
case TypeTime:
_result = (int)left + (int)right;
break;
case TypeFloat:
_result = (float)left + (float)right;
break;
case TypeString:
{
Str s=(const char *)left;
s += (const char *)right;
_result = strdup(s);
}
break;
case TypeDate:
_result = (time_t)left + (time_t)right;
break;
default:
_result.ResetValue();
}
return _result;
}
Boolean Add::modified_attributes(ConstCharPtrArray *arr, Boolean /*in_lvalue*/)
{
return _left->modified_attributes(arr,FALSE) + _right->modified_attributes(arr,FALSE);
}
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