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= Namespaces =

We need to create name spaces.[[BR]][[BR]]
Namespaces are 
* commonly structured as hierarchies to allow reuse of names in different contexts.
* typically employed for the purpose of grouping symbols and identifiers around a particular functionality and to avoid name collisions between multiple identifiers that share the same name.
* hierarchical, ie sets of namespaces can be nested within another namespace

To store namespaces we need a structure similar to that detailed below ... [wiki:NotationExplaination explaination of the notation]

== DATA DEFINITION ( .tdx ) ==
{{{
NAMESPACE $project:tdx - $system:lang    // however $project is implied and not really needed

  SINGLETON design
    namespace ourNameSpaces = NEW namespace("system")

  CLASS namespace(ubyte$ name)
    namespace{} subSpaces
    
    namespace(namespace) addNamespace(newNameSpace) =
    {
      subSpaces->add(newNameSpace)
      RETURN newNameSpace
    }

    SYNTAX
        namespaceClause := "NAMESPACE" newNameSpaceClause ( "-" ( existingNameClause )+ );
        newNameSpaceClause := ( "$" ident ( ":" ident )* | ident ( ":" ident )+ );
        existingNameClause := ( "$" ident ( ":" ident )* | ident ( ":" ident )+ );
}}}

== DATA DEFINITION ( .vdx ) ==
=== INFORMATION MODEL ===
[[Image(namespace.png,width=98%)]]
=== PROCEDURAL MODEL ===
[[Image(namespaceClause.png,width=98%)]]
[[Image(newNamespaceClause.png,width=98%)]]
[[Image(existingNamespaceClause.png,width=98%)]]