public override void gen(int b, int a)
{
if (stmt1 == Stmt.Null)
{
stmt2.gen(b, a);
}
else if (stmt2 == Stmt.Null)
{
stmt1.gen(b, a);
}
else
{
int label = newlabel();
stmt1.gen(b, label);
emitlabel(label);
stmt2.gen(label, a);
}
/*
* if (stmt1 !=Stmt.Null)
* for(int i=0; i<stmt1.rows.Count;i++)
* {
* outputRows.Add(stmt1.rows[i]);
* }
* if (stmt2 != Stmt.Null)
* for (int i = 0; i < stmt2.rows.Count; i++)
* {
* outputRows.Add(stmt2.rows[i]);
* }
*/
}
public override void gen(int b, int a)
{
int label = newlabel();
expr.jumping(0, a);
emitlabel(label);
stmt.gen(label, a);
}
public override void gen(int b, int a)
{
int label = newlabel(); // label for the code for stmt
expr.jumping(0, a); // fall through on true, goto a on false
emitlabel(label);
stmt.gen(label, a);
}
public override void gen(int b, int a)
{
if (stmt1 == Stmt.Null)
{
stmt2.gen(b, a);
}
else if (stmt2 == Stmt.Null)
{
stmt1.gen(b, a);
}
else
{
int label = newlabel();
stmt1.gen(b, label);
emitlabel(label);
stmt2.gen(label, a);
}
}
public override void gen(int b, int a)
{
after = a;
int label = newlabel();
stmt.gen(b, label);
emitlabel(label);
expr.jumping(b, 0);
}
public override void gen(int b, int a)
{
after = a; // save label a
expr.jumping(0, a);
int label = newlabel(); // label for stmt
emitlabel(label); stmt.gen(label, b);
emit("goto L" + b);
}
public override void gen(int b, int a)
{
int label1 = newlabel();
int label2 = newlabel();
expr.jumping(0, label2);
emitlabel(label1);
stmt1.gen(label1, a);
emit("goto L" + a);
emitlabel(label2);
stmt2.gen(label2, a);
}
public override void gen(int b, int a)
{
int label1 = newlabel(); // label1 for stmt1
int label2 = newlabel(); // label2 for stmt2
expr.jumping(0, label2); // fall through to stmt1 on true
emitlabel(label1);
stmt1.gen(label1, a);
emit("goto L" + a);
emitlabel(label2);
stmt2.gen(label2, a);
}