public T GetInputValue <T>(string name, T defaultValue = default)
{
var port = GetInputPort(name);
if (port == null)
{
Debug.LogWarning(
$"<b>[{this.name}]</b> Unknown input port name `{name}`. Returning default.",
this
);
return(defaultValue);
}
if (port.connections.Count < 1)
{
return(defaultValue);
}
NodePort.Connection conn = port.connections[0];
object output = conn.node.GetOutputValue(conn.portName);
if (output == null && typeof(T).IsValueType)
{
// Can't ChangeType a null when expecting a value type. Bail.
Debug.LogWarning(
$"<b>[{this.name}]</b> Received null on input port `{name}`. " +
$"Expected value type {typeof(T).FullName}. " +
$"Returning default.",
this
);
return(defaultValue);
}
// Short circuit Convert.ChangeType if it's already the expected type
if (output == null || output.GetType() == typeof(T) || output is T)
{
return((T)output);
}
try
{
return((T)Convert.ChangeType(output, typeof(T)));
}
catch (Exception e)
{
Debug.LogError(
$"<b>[{this.name}]</b> Could not cast output port `{conn.portName}` with type `{output.GetType()}` " +
$"to input port `{this.name}` type `{typeof(T)}`. " +
$"Returning default.",
this
);
}
return(defaultValue);
}
/// <summary>
/// Retrieve an input value without attempting a typecast.
/// </summary>
public object GetInputValue(string name, object defaultValue = null)
{
var port = GetInputPort(name);
if (port == null)
{
Debug.LogWarning(
$"<b>[{this.name}]</b> Cannot read unknown port {name}. Returning default."
);
return(defaultValue);
}
if (port.connections.Count < 1)
{
return(defaultValue);
}
NodePort.Connection conn = port.connections[0];
return(conn.node.GetOutputValue(conn.portName));
}