static bool TryGetAttribute(XmlNode node, string attribute, out CapnpGen.CapOutputType value)
{
value = CapnpGen.CapOutputType.color;
if (node.Attributes[attribute] == null)
{
return(false);
}
return(Enum.TryParse <CapnpGen.CapOutputType>(node.Attributes[attribute].Value, out value));
}
static bool ParseOutput(XmlNode outputNode, List <CapnpGen.CapOutput> outputs, List <CapnpGen.CapBlender> blenders, out string error)
{
error = "";
CapnpGen.CapOutput output = new CapnpGen.CapOutput();
string name = "";
if (!TryGetAttribute(outputNode, "name", out name))
{
error = "Output node does not have a name attribute";
return(false);
}
output.Name = name;
CapnpGen.CapOutputType outputType = CapnpGen.CapOutputType.color;
if (!TryGetAttribute(outputNode, "type", out outputType))
{
error = "Output node \"" + output.Name + "\" does not have a valid type attribute, valid values: ";
var values = Enum.GetValues(typeof(CapnpGen.CapOutputType));
foreach (var value in values)
{
error += value + " ";
}
return(false);
}
output.Type = outputType;
output.Blender = null;
// If output type was color we'll need a blender
if (output.Type == CapnpGen.CapOutputType.color)
{
// Get the blender name
string blenderName = "";
if (!TryGetAttribute(outputNode, "blender", out blenderName))
{
error = "Output node \"" + output.Name + "\" is of type Color but does not have a blender attribute. All color outputs need a blender attribute";
return(false);
}
// Find and reference the blender itself
foreach (CapnpGen.CapBlender blender in blenders)
{
if (blender.Name == blenderName)
{
output.Blender = blender;
break;
}
}
// If we didn't find one, let's report an error
if (output.Blender == null)
{
error = "Output node \"" + output.Name + "\" references unknown blender \"" + blenderName + "\"";
return(false);
}
CapnpGen.CapSubType subType = CapnpGen.CapSubType.@float;
if (!TryGetAttribute(outputNode, "subtype", out subType))
{
error = "Output node \"" + output.Name + "\" is of type Color but does not have a valid subtype attribute, valid values: ";
var values = Enum.GetValues(typeof(CapnpGen.CapSubType));
foreach (var value in values)
{
string valueString = value.ToString();
if (valueString[0] == '@') // Capnproto will prepend "@" on reserved keywords, let's filter that away
{
valueString = valueString.Substring(1);
}
error += value + " ";
}
return(false);
}
output.SubType = subType;
}
outputs.Add(output);
return(true);
}
