/// <summary> returns the value of the reference. Generally, this is only
/// called for dynamic proxies, as the static ones should have
/// been stored in the VMContext's localContext store
/// *
/// </summary>
/// <param name="context">Context to use for getting current value
/// </param>
/// <returns>Object value
/// *
///
/// </returns>
public Object getObject(IInternalContextAdapter context)
{
try
{
/*
* we need to output based on our type
*/
Object retObject = null;
if (type == ParserTreeConstants.REFERENCE)
{
/*
* two cases : scalar reference ($foo) or multi-level ($foo.bar....)
*/
if (numTreeChildren == 0)
{
/*
* if I am a single-level reference, can I not get get it out of my context?
*/
retObject = context.Get(singleLevelRef);
}
else
{
/*
* I need to let the AST produce it for me.
*/
retObject = nodeTree.Execute(null, context);
}
}
else if (type == ParserTreeConstants.OBJECT_ARRAY)
{
retObject = nodeTree.Value(context);
}
else if (type == ParserTreeConstants.INTEGER_RANGE)
{
retObject = nodeTree.Value(context);
}
else if (type == ParserTreeConstants.TRUE)
{
retObject = staticObject;
}
else if (type == ParserTreeConstants.FALSE)
{
retObject = staticObject;
}
else if (type == ParserTreeConstants.STRING_LITERAL)
{
retObject = nodeTree.Value(context);
}
else if (type == ParserTreeConstants.NUMBER_LITERAL)
{
retObject = staticObject;
}
else if (type == ParserTreeConstants.TEXT)
{
/*
* this really shouldn't happen. text is just a throwaway arg for #foreach()
*/
try
{
StringWriter writer = new StringWriter();
nodeTree.Render(context, writer);
retObject = writer;
}
catch (System.Exception e)
{
runtimeServices.Error(string.Format("VMProxyArg.getObject() : error rendering reference : {0}", e));
}
}
else if (type == GENERALSTATIC)
{
retObject = staticObject;
}
else
{
runtimeServices.Error(
string.Format("Unsupported VM arg type : VM arg = {0} type = {1}( VMProxyArg.getObject() )", callerReference, type));
}
return(retObject);
}
catch (MethodInvocationException mie)
{
/*
* not ideal, but otherwise we propagate out to the
* VMContext, and the Context interface's put/get
* don't throw. So this is a the best compromise
* I can think of
*/
runtimeServices.Error(string.Format("VMProxyArg.getObject() : method invocation error getting value : {0}", mie));
return(null);
}
}