public override void AcceptEmitter(AsmEmitter asm)
{
Game g = Game.GetInstance();
int strId = g.GetStringId(msg);
asm.WritePrintLn(strId, msg);
}
//applies the operator and leaves
//the result on the stack
public void AcceptEmitter(AsmEmitter asm)
{
if (opType == Opr.EQ)
{
asm.WriteEqTest();
}
else if (opType == Opr.NEQ)
{
asm.WriteNeqTest();
}
else if (opType == Opr.GT)
{
asm.WriteGtTest();
}
else if (opType == Opr.LT)
{
asm.WriteLtTest();
}
else if (opType == Opr.AND)
{
asm.WriteAndTest();
}
else if (opType == Opr.OR)
{
asm.WriteOrTest();
}
}
public override void AcceptEmitter(AsmEmitter asm)
{
foreach (Statement s in statements)
{
s.AcceptEmitter(asm);
}
}
public void AcceptEmitter(AsmEmitter asm)
{
//write the expression
lhs.AcceptEmitter(asm);
rhs.AcceptEmitter(asm);
//apply operator and leave result on stack
op.AcceptEmitter(asm);
}
public override void AcceptEmitter(AsmEmitter asm)
{
Game g = Game.GetInstance();
int o = g.GetObjectId(obj);
asm.WriteConstant(o);
rhs.AcceptEmitter(asm); //push value
asm.WriteSetAttr(attr);
}
public override void AcceptEmitter(AsmEmitter asm)
{
string label = asm.GetNextLabel();
if (elseNode == null)
{ //just an 'if' statement
expr.AcceptEmitter(asm); //leaves result on stack
asm.WriteJumpOnFalse(label); //pull it and jump
body.AcceptEmitter(asm);
asm.WriteLabel(label);
}
else if (elseNode != null)
{
string outLabel = asm.GetNextLabel();
asm.WriteJumpOnFalse(label); //pull it and jump
body.AcceptEmitter(asm);
asm.WriteJump(outLabel); //jump out
asm.WriteLabel(label);
elseNode.AcceptEmitter(asm);
asm.WriteLabel(outLabel);
}
}
public override void AcceptEmitter(AsmEmitter asm)
{
asm.WriteMove();
}
public virtual void AcceptEmitter(AsmEmitter asm)
{
}
public void AcceptEmitter(AsmEmitter asm)
{
asm.WriteConstant(val);
}
public override void AcceptEmitter(AsmEmitter asm)
{
val.AcceptEmitter(asm); //push rhs
asm.WriteAddToVar(varName);
}
public override void AcceptEmitter(AsmEmitter asm)
{
rhs.AcceptEmitter(asm); //push rhs
asm.WriteSetVar(varName);
}
public abstract void AcceptEmitter(AsmEmitter asm);
