/// <summary>
/// Create the binding object (association) for the class in the global name scope (system dictionary).
/// </summary>
/// <param name="installer">Context within which the binding is to be created.</param>
/// <returns>Returns true if successful, otherwise false.</returns>
protected internal override bool CreateGlobalBinding(IDefinitionInstallerContext installer)
{
if (installer == null)
{
throw new ArgumentNullException();
}
// 1. Check if the name is not complete garbage ... or reserved identifier
if (!IronSmalltalk.Common.Utilities.ValidateIdentifier(this.Name.Value))
{
return(installer.ReportError(this.Name, InstallerErrors.ClassInvalidName));
}
if (IronSmalltalk.Common.GlobalConstants.ReservedIdentifiers.Contains(this.Name.Value))
{
return(installer.ReportError(this.Name, InstallerErrors.ClassReservedName));
}
// 2. Check if there is already a global with that name in the inner name scope
Symbol name = installer.Runtime.GetSymbol(this.Name.Value);
IDiscreteGlobalBinding existingBinding = installer.GetLocalGlobalBinding(name);
if (existingBinding != null)
{
return(installer.ReportError(this.Name, InstallerErrors.ClassNameNotUnique));
}
// 3. No global defined in the inner scope, but check the scopes (inner or outer) for protected names like Object etc.
if (installer.IsProtectedName(name))
{
return(installer.ReportError(this.Name, InstallerErrors.ClassNameProtected));
}
// 4. OK ... create a binding - so far pointing to null ... this will be set in CreateGlobalObject().
installer.AddClassBinding(new ClassBinding(name));
return(true);
}