public static IdentType CreateVariable(String type)
{
IdentType it = new IdentType(Class.Variable);
it.type = type;
return(it);
}
public static bool Equals(IdentType a, IdentType b)
{
if (a.typeClass != b.typeClass)
{
return(false);
}
// Might want to change how we check equality. I'll see later.
if (a.typeClass == Class.Variable)
{
return(a.type == b.type);
}
else if (a.typeClass == Class.Function)
{
if (a.returnType != b.returnType)
{
return(false);
}
if (a.paramTypes.Length != b.paramTypes.Length)
{
return(false);
}
for (int i = 0; i < a.paramTypes.Length; i++)
{
if (a.paramTypes[i] != b.paramTypes[i])
{
return(false);
}
}
return(true);
}
return(false);
}
public static IdentType CreateFunction(String returnType, String[] paramTypes)
{
IdentType it = new IdentType(Class.Function);
it.returnType = returnType;
it.paramTypes = paramTypes;
return(it);
}
public void addSymbol(String name, IdentType type)
{
if (!symbols.ContainsKey(name))
{
symbols[name] = new List <IdentType>();
symbols[name].Add(type);
}
else
{
if (symbols[name][0].typeClass != IdentType.Class.Function || type.typeClass != IdentType.Class.Function) // Only allow function overloading
{
throw new Exception("Trying to overload name " + name + ". Only function types may be overloaded.");
}
else
{
symbols[name].Add(type);
}
}
}
public static IdentType CreateDatatype()
{
IdentType it = new IdentType(Class.Datatype);
return(it);
}