/// <summary>
/// invokes the method on the object passed in
/// </summary>
public override Object Execute(Object o, IInternalContextAdapter context)
{
bool isString = o.GetType() == typeof(string);
bool isDecimal = o.GetType() == typeof(decimal);
bool isPrimitive = o.GetType().IsPrimitive;
if (identifier == "to_quote" && (isString || isPrimitive || isDecimal))
{
return(string.Format("\"{0}\"", EscapeDoubleQuote(o.ToString())));
}
else if (identifier == "to_squote" && (isString || isPrimitive || isDecimal))
{
return(string.Format("'{0}'", EscapeSingleQuote(o.ToString())));
}
IDuck duck = o as IDuck;
if (duck != null)
{
return(duck.GetInvoke(identifier));
}
IVelPropertyGet velPropertyGet = null;
try
{
Type c = o.GetType();
// first, see if we have this information cached.
IntrospectionCacheData introspectionCacheData = context.ICacheGet(this);
// if we have the cache data and the class of the object we are
// invoked with is the same as that in the cache, then we must
// be all-right. The last 'variable' is the method name, and
// that is fixed in the template :)
if (introspectionCacheData != null && introspectionCacheData.ContextData == c)
{
velPropertyGet = (IVelPropertyGet)introspectionCacheData.Thingy;
}
else
{
// otherwise, do the introspection, and cache it
velPropertyGet = runtimeServices.Uberspect.GetPropertyGet(o, identifier, uberInfo);
if (velPropertyGet != null && velPropertyGet.Cacheable)
{
introspectionCacheData = new IntrospectionCacheData(c, velPropertyGet);
context.ICachePut(this, introspectionCacheData);
}
}
}
catch (Exception e)
{
runtimeServices.Error(string.Format("ASTIdentifier.execute() : identifier = {0} : {1}", identifier, e));
}
// we have no executor... punt...
if (velPropertyGet == null)
{
return(null);
}
// now try and execute. If we get a TargetInvocationException,
// throw that as the app wants to get these. If not, log and punt.
try
{
return(velPropertyGet.Invoke(o));
}
catch (TargetInvocationException targetInvocationException)
{
EventCartridge ec = context.EventCartridge;
// if we have an event cartridge, see if it wants to veto
// also, let non-Exception Throwables go...
if (ec == null)
{
// no event cartridge to override. Just throw
String message = String.Format(
"Invocation of method '{0}' in {1}, template {2} Line {3} Column {4} threw an exception",
velPropertyGet.MethodName, o != null ? o.GetType().FullName : string.Empty,
uberInfo.TemplateName, uberInfo.Line, uberInfo.Column);
throw new MethodInvocationException(message, targetInvocationException.InnerException, velPropertyGet.MethodName);
}
else
{
try
{
return(ec.HandleMethodException(o.GetType(), velPropertyGet.MethodName, targetInvocationException.InnerException));
}
catch (Exception)
{
String message = String.Format(
"Invocation of method '{0}' in {1}, template {2} Line {3} Column {4} threw an exception",
velPropertyGet.MethodName, o != null ? o.GetType().FullName : string.Empty,
uberInfo.TemplateName, uberInfo.Line, uberInfo.Column);
throw new MethodInvocationException(message, targetInvocationException.InnerException, velPropertyGet.MethodName);
}
}
}
catch (ArgumentException)
{
return(null);
}
catch (Exception e)
{
runtimeServices.Error(
string.Format("ASTIdentifier() : exception invoking method for identifier '{0}' in {1} : {2}", identifier,
o.GetType(), e));
}
return(null);
}