public override void gen(int begin, int after)
{
if (Expr is FuncCall)
{
if (t == null)
{
emitfunSet(Expr, Id);
}
else
{
emitfunSet(Expr, t);
}
}
else
{
if (t == null)
{
CurrentGenerator.Set(Id, Expr.gen());
}
else
{
CurrentGenerator.Set(t, Expr.gen());
}
}
}
public override Expr reduce()
{
Expr x = gen();
Temp t = new Temp(Type);
CurrentGenerator.Temp(t);
CurrentGenerator.Set(t, x);
return(t);
}
public override Expr gen()
{
int f = CurrentGenerator.AllocLabel();
int a = CurrentGenerator.AllocLabel();
Temp t = new Temp(Type);
CurrentGenerator.Temp(t);
jumping(0, f);
CurrentGenerator.Set(t, Constant.True);
CurrentGenerator.Goto(a);
CurrentGenerator.Label(f);
CurrentGenerator.Set(t, Constant.False);
CurrentGenerator.Label(a);
return(t);
}