public static IExpression Parse(IEnumerator <TokenData> tokens, IContext parentContext, ref bool done)
{
if (!tokens.MoveNext())
{
done = true;
}
if (done)
{
return(null);
}
var moduleDecl = new ModuleDeclaration();
var token = tokens.Current;
#region Identifier
var identifiers = (ILocalIdentifierScope) new LocalIdentifierScope();
if (token.Type == Token.IdentifierLiteral)
{
moduleDecl.Name = ((IIdentifierLiteral)token.Data).Content;
identifiers = parentContext.AddModule(moduleDecl);
if (!tokens.MoveNext())
{
done = true;
}
if (done)
{
return(moduleDecl); // fully forward declared
}
token = tokens.Current;
}
#endregion
#region Body
if (token.Type == Token.BlockStartIndentation)
{
var context = new Context(identifiers, new LocalValueScope())
{
Parent = parentContext
};
var contentBlock = (BlockLiteral)token.Data;
moduleDecl.Block = Parser.ParseBlockWithContext(contentBlock, context);
if (!tokens.MoveNext())
{
done = true;
}
if (done)
{
return(moduleDecl);
}
}
#endregion
return(moduleDecl);
}
/*
* Protected.
*/
protected void AddModule <T>() where T : IModule, new()
{
_context.AddModule <T>();
}