private Symbol(PrimitiveSymbol prim)
{
switch (prim) {
case PrimitiveSymbol.Unbound:
this.name = "unbound";
this.value = this.function = this;
break;
default:
throw new NotSupportedException();
}
}
public static bool operator <=(Name a, Name b)
{
PrimitiveSymbol pa = a as PrimitiveSymbol;
PrimitiveSymbol pb = b as PrimitiveSymbol;
if (pa == null || pb == null)
{
return(false);
}
int delta;
if (PrimitiveSymbol.TryCompare(pa, pb, out delta))
{
return(delta <= 0);
}
return(false);
}
public override bool Equals(object obj)
{
PrimitiveSymbol s = obj as PrimitiveSymbol;
if (s == null)
{
return(false);
}
if (m_value == s.m_value)
{
return(true);
}
if (m_value == null || s.m_value == null)
{
return(false);
}
return(CompareNameWithString(s.m_value.ToString()));
}
public override bool Match(Name name)
{
PrimitiveSymbol s = name as PrimitiveSymbol;
if (s == null)
{
return(false);
}
if (m_value == s.m_value)
{
return(true);
}
if (m_value == null || s.m_value == null)
{
return(false);
}
return(CompareNameWithString(s.m_value));
}
public override bool Match(Name name)
{
if (name.IsUniversal)
{
return(true);
}
PrimitiveSymbol s = name as PrimitiveSymbol;
if (s == null)
{
return(false);
}
if (m_value == null)
{
return(false);
}
return(m_value.Equals(s.m_value));
}
public static bool TryCompare(PrimitiveSymbol s1, PrimitiveSymbol s2, out int delta)
{
return(PrimitiveValue.TryCompare(s1.m_value, s2.m_value, out delta));
}