public override void gen(int begin, int after)
{
CurrentGenerator.Goto(after);
foreach (var item in Params.ParamList)
{
if (item is OptParam)
{
CurrentGenerator.OptParam(item as OptParam, (item as OptParam).DefaultValue, item.ParamType);
}
else
{
CurrentGenerator.Param(item, item.ParamType);
}
}
int label = CurrentGenerator.AllocLabel();
int label2 = CurrentGenerator.AllocLabel();
ExitLabel = label2;
CurrentGenerator.Label(label);
CurrentGenerator.LabelFunc(this);
Stmt.gen(begin, after);
CurrentGenerator.LabelFuncEnd(this);
CurrentGenerator.Label(ExitLabel);
//CurrentGenerator.Return(null);
}
public override void gen(int begin, int after)
{
int label = CurrentGenerator.AllocLabel();
Expr.jumping(0, after);
CurrentGenerator.Label(label);
Stmt.gen(label, after);
}
public override void gen(int begin, int after)
{
this.after = after;
this.begin = begin;
int label = CurrentGenerator.AllocLabel();
Stmt.gen(label, begin);
CurrentGenerator.Label(label);
Expr.jumping(begin, 0);
}
public override void gen(int begin, int after)
{
int label1 = CurrentGenerator.AllocLabel();
int label2 = CurrentGenerator.AllocLabel();
Expr.jumping(0, label2);
CurrentGenerator.Label(label1); Stmt1.gen(label1, after); CurrentGenerator.Goto(after);
CurrentGenerator.Label(label2); Stmt2.gen(label2, after);
}
public override void jumping(int t, int f)
{
int l = f != 0 ? f : CurrentGenerator.AllocLabel();
First.jumping(0, l);
Second.jumping(t, f);
if (f == 0)
{
CurrentGenerator.Label(l);
}
}
public override void jumping(int t, int f)
{
int label = t != 0 ? t : CurrentGenerator.AllocLabel();
First.jumping(label, 0);
Second.jumping(t, f);
if (t == 0)
{
CurrentGenerator.Label(label);
}
}
//Program -> Block
public void Program()
{
move();
s = Modules();
CurrentGenerator.Start(top.SubTables.First());
int begin = CurrentGenerator.AllocLabel(), after = CurrentGenerator.AllocLabel();
CurrentGenerator.Label(begin);
s.gen(begin, after);
CurrentGenerator.Label(after);
CurrentGenerator.End();
}
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);
}
public override void gen(int begin, int after)
{
if (First == Null)
{
Second.gen(begin, after);
}
else if (Second == Null)
{
First.gen(begin, after);
}
else
{
int label = CurrentGenerator.AllocLabel();
First.gen(begin, label);
CurrentGenerator.Label(label);
Second.gen(label, after);
}
}
public override void gen(int begin, int after)
{
if (Caller.FunParams.Count() > 0)
{
foreach (var item in Caller.FunParams)
{
if (item.Param is FuncCall)
{
Temp t = new Temp(Caller.Func.Params.ReturnType);
CurrentGenerator.Temp(t);
emitfunSet(item.Param, t);
CurrentGenerator.Param(t);
}
else
{
CurrentGenerator.Param(item);
}
}
}
CurrentGenerator.Label(CurrentGenerator.AllocLabel());
CurrentGenerator.Call(Caller);
CurrentGenerator.CallEnd();
}