public override void gen(int begin, int after)
{
Expr s1 = Index.reduce();
Expr s2 = Expr.reduce();
CurrentGenerator.SetArr(Array, s1, s2);
}
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 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 Expr reduce()
{
Expr x = gen();
Temp t = new Temp(Type);
CurrentGenerator.Temp(t);
CurrentGenerator.Set(t, x);
return(t);
}
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)
{
if (this == True && t != 0)
{
CurrentGenerator.Goto(t);
}
else if (this == False && f != 0)
{
CurrentGenerator.Goto(f);
}
}
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);
}
}
//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 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);
}
}
public override Expr reduce()
{
foreach (var item in FunParams)
{
CurrentGenerator.Param(item);
}
Temp t = new Temp(Func.Params.ReturnType);
CurrentGenerator.Temp(t);
CurrentGenerator.Call(t, Func);
CurrentGenerator.CallEnd();
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);
}
public virtual void emitjumps(Expr s, int truejump, int falsejump)
{
if (truejump != 0 && falsejump != 0)
{
CurrentGenerator.If(s, truejump);
CurrentGenerator.Goto(falsejump.ToString());
}
else if (truejump != 0)
{
CurrentGenerator.If(s, truejump);
}
else if (falsejump != 0)
{
CurrentGenerator.IfFalse(s, falsejump);
}
}
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 (Parent.Params.ReturnType != ReserveType.Void)
{
if (!ReserveType.ConvertableT1T2(Parent.Params.ReturnType, ReturnVal.Type))
{
throw new TypeMisMatchException(this.lexline, ReturnVal.Type, Parent.Params.ReturnType.ToString());
}
Temp t = new Temp(Parent.Params.ReturnType);
CurrentGenerator.Temp(t);
new Set(t, ReturnVal).gen(begin, after);
CurrentGenerator.Return(t);
}
else
{
CurrentGenerator.Return(null);
}
//emitLabel(Parent.ExitLabel);
}
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();
}
//public int newlabel()
//{
// return CurrentGenerator.AllocLabel();
//}
//public void emitLabel(int i)
//{
// CurrentGenerator.Label("L" + i.ToString());
//}
//public void emit(string s)
//{
// CurrentIO.EmitLine(s);
//}
//public void emitSrc(string s)
//{
// CurrentIO.EmitSource(s);
//}
public void emitfunSet(Expr exp, Expr toVar)
{
FuncCall c = exp as FuncCall;
if (c.FunParams?.Count() > 0)
{
foreach (PassParam item in c.FunParams)
{
if (item.Param is FuncCall)
{
Temp t = new Temp(toVar.Type);
CurrentGenerator.Temp(t);
emitfunSet(item.Param, t);
CurrentGenerator.Param(t);
}
else
{
CurrentGenerator.Param(item);
}
}
}
CurrentGenerator.Call(toVar, c.Func);
CurrentGenerator.CallEnd();
}
public override void gen(int begin, int after)
{
CurrentGenerator.Goto(Stmt.begin);
}
public override void gen(int begin, int after)
{
CurrentGenerator.EscapeScope(Symbols);
}
