private ILTypeReference? TryResolveTypeReference(TypeReferenceNode typeReferenceNode, ILScope scope)
{
//Todo: Process embedded types
switch (typeReferenceNode.Classification)
{
case TypeClassification.Standard:
if (Types.IsBaseType(typeReferenceNode.Name))
{
BaseType baseType = Types.GetBaseTypeByName(typeReferenceNode.Name);
return new ILTypeReference(new ILBaseType(baseType), typeReferenceNode.Modifiers);
}
else if (scope.Typedefs.ContainsKey(typeReferenceNode.Name))
{
ILTypeReference typedef = scope.Typedefs[typeReferenceNode.Name];
typedef.Modifiers |= typeReferenceNode.Modifiers;
return typedef;
}
else if (scope.EnumNames.Contains(typeReferenceNode.Name))
{
return new ILTypeReference(new ILBaseType(Types.GetEnumBaseType()), typeReferenceNode.Modifiers);
}
else
{
return null;
}
case TypeClassification.Struct:
if (scope.Structs.ContainsKey(typeReferenceNode.Name))
return new ILTypeReference(scope.Structs[typeReferenceNode.Name], TypeModifiers.None);
else
return null;
case TypeClassification.Pointer:
ILTypeReference? innerType = TryResolveTypeReference(typeReferenceNode.InnerType, scope);
if (innerType == null)
return null;
ILTypeReference returnType = new ILTypeReference(new ILPointerType(innerType.Value), typeReferenceNode.Modifiers);
return returnType;
default:
throw new InternalCompilerException("Unexpected type classification.");
}
}
public void RegisterVariable(ILGenerationContext context, string name, ILTypeReference type)
{
if (Variables.ContainsKey(name))
throw new ParserException(string.Format("Duplicate definition for variable \"{0}\".", name), context.CurrentNode.TokenIndex, context.CurrentNode.Token);
}