/// <summary>
/// create a new expression node
/// </summary>
/// <param name="kind"></param>
/// <param name="type"></param>
/// <param name="name"></param>
/// <param name="Linenum"></param>
/// <param name="scope"></param>
public TreeNode(ExpKind kind, TokenType type, string name, int Linenum, string scope)
: this()
{
this.NodeKind = NodeKind.expK;
this.Kind = kind;
this.Type = type;
this.Name = name;
this.LineNum = Linenum;
this.Scope = scope;
}
/// <summary>
/// create a new expression node
/// </summary>
/// <param name="kind"></param>
/// <param name="type"></param>
/// <param name="name"></param>
/// <param name="Linenum"></param>
/// <param name="scope"></param>
public TreeNode(ExpKind kind, TokenType type, string name, int Linenum, string scope)
: this()
{
this.NodeKind = NodeKind.expK;
this.Kind = kind;
this.Type = type;
this.Name = name;
this.LineNum = Linenum;
this.Scope = scope;
}
public TreeNode(ExpKind exp) // creates a TreeNode of Attribute
{
childrens = new TreeNode[3];
for (int i = 0; i < 3; i++)
{
childrens[i] = null;
}
nodekind = NodeKind.ExpK;
expkind = exp;
}
public void CopyFrom(ExpDesc e)
{
this.Kind = e.Kind;
this.Info = e.Info;
// this.Ind.T = e.Ind.T;
// this.Ind.Idx = e.Ind.Idx;
// this.Ind.Vt = e.Ind.Vt;
this.Ind = e.Ind;
this.NumberValue = e.NumberValue;
this.ExitTrue = e.ExitTrue;
this.ExitFalse = e.ExitFalse;
}
TreeNode newExpNode(ExpKind kind)
{
TreeNode t = new TreeNode();
int i;
if (t == null)
{
Console.Write("Out of memory error at line %d\n");
}
else
{
for (i = 0; i < MAXCHILDREN; i++)
{
t.child.Add(null);
}
t.sibling = null;
t.nodekind = NodeKind.ExpK;
t.kind.exp = kind;
t.type = ExpType.Void;
}
return(t);
}
public static bool VKIsInReg(ExpKind k)
{
return(k == ExpKind.VNONRELOC || k == ExpKind.VLOCAL);
}
public static bool VKIsVar(ExpKind k)
{
return((int)ExpKind.VLOCAL <= (int)k &&
(int)k <= (int)ExpKind.VINDEXED);
}
public static bool VKIsInReg( ExpKind k )
{
return k == ExpKind.VNONRELOC || k == ExpKind.VLOCAL;
}
public static bool VKIsVar( ExpKind k )
{
return ((int)ExpKind.VLOCAL <= (int)k &&
(int)k <= (int)ExpKind.VINDEXED);
}
private void InitExp( ExpDesc e, ExpKind k, int i )
{
e.Kind = k;
e.Info = i;
e.ExitTrue = Coder.NO_JUMP;
e.ExitFalse = Coder.NO_JUMP;
}
public void CopyFrom( ExpDesc e )
{
this.Kind = e.Kind;
this.Info = e.Info;
// this.Ind.T = e.Ind.T;
// this.Ind.Idx = e.Ind.Idx;
// this.Ind.Vt = e.Ind.Vt;
this.Ind = e.Ind;
this.NumberValue = e.NumberValue;
this.ExitTrue = e.ExitTrue;
this.ExitFalse = e.ExitFalse;
}
private bool HasMultiRet( ExpKind k )
{
return k == ExpKind.VCALL || k == ExpKind.VVARARG;
}