private static IComponentFactory GetComponentJson(IExceptionContext ectx, Type signatureType, string name, JObject settings, ComponentCatalog catalog)
{
Contracts.AssertValue(ectx);
ectx.AssertValue(signatureType);
ectx.AssertNonEmpty(name);
ectx.AssertValueOrNull(settings);
ectx.AssertValue(catalog);
if (!catalog.TryGetComponentKind(signatureType, out string kind))
{
throw ectx.Except($"Component type '{signatureType}' is not a valid signature type.");
}
if (!catalog.TryFindComponent(kind, name, out ComponentCatalog.ComponentInfo component))
{
var available = catalog.GetAllComponents(kind).Select(x => $"'{x.Name}'");
throw ectx.Except($"Component '{name}' of kind '{kind}' is not found. Available components are: {string.Join(", ", available)}");
}
var inputBuilder = new InputBuilder(ectx, component.ArgumentType, catalog);
if (settings != null)
{
foreach (var pair in settings)
{
if (!inputBuilder.TrySetValueJson(pair.Key, pair.Value))
{
throw ectx.Except($"Unexpected value for component '{name}', field '{pair.Key}': '{pair.Value}'");
}
}
}
var missing = inputBuilder.GetMissingValues().ToArray();
if (missing.Length > 0)
{
throw ectx.Except($"The following required inputs were not provided for component '{name}': {string.Join(", ", missing)}");
}
return(inputBuilder.GetInstance() as IComponentFactory);
}
private static object ParseJsonValue(IExceptionContext ectx, Type type, Attributes attributes, JToken value, ComponentCatalog catalog)
{
Contracts.AssertValue(ectx);
ectx.AssertValue(type);
ectx.AssertValueOrNull(value);
ectx.AssertValue(catalog);
if (value == null)
{
return(null);
}
if (value is JValue val && val.Value == null)
{
return(null);
}
if (type.IsGenericType && (type.GetGenericTypeDefinition() == typeof(Optional <>) || type.GetGenericTypeDefinition() == typeof(Nullable <>)))
{
if (type.GetGenericTypeDefinition() == typeof(Optional <>) && value.HasValues)
{
value = value.Values().FirstOrDefault();
}
type = type.GetGenericArguments()[0];
}
if (type.IsGenericType && (type.GetGenericTypeDefinition() == typeof(Var <>)))
{
string varName = value.Value <string>();
ectx.Check(VariableBinding.IsBindingToken(value), "Variable name expected.");
var variable = Activator.CreateInstance(type) as IVarSerializationHelper;
var varBinding = VariableBinding.Create(ectx, varName);
variable.VarName = varBinding.VariableName;
return(variable);
}
if (type == typeof(JArray) && value is JArray)
{
return(value);
}
TlcModule.DataKind dt = TlcModule.GetDataType(type);
try
{
switch (dt)
{
case TlcModule.DataKind.Bool:
return(value.Value <bool>());
case TlcModule.DataKind.String:
return(value.Value <string>());
case TlcModule.DataKind.Char:
return(value.Value <char>());
case TlcModule.DataKind.Enum:
if (!Enum.IsDefined(type, value.Value <string>()))
{
throw ectx.Except($"Requested value '{value.Value<string>()}' is not a member of the Enum type '{type.Name}'");
}
return(Enum.Parse(type, value.Value <string>()));
case TlcModule.DataKind.Float:
if (type == typeof(double))
{
return(value.Value <double>());
}
else if (type == typeof(float))
{
return(value.Value <float>());
}
else
{
ectx.Assert(false);
throw ectx.ExceptNotSupp();
}
case TlcModule.DataKind.Array:
var ja = value as JArray;
ectx.Check(ja != null, "Expected array value");
Func <IExceptionContext, JArray, Attributes, ComponentCatalog, object> makeArray = MakeArray <int>;
return(Utils.MarshalInvoke(makeArray, type.GetElementType(), ectx, ja, attributes, catalog));
case TlcModule.DataKind.Int:
if (type == typeof(long))
{
return(value.Value <long>());
}
if (type == typeof(int))
{
return(value.Value <int>());
}
ectx.Assert(false);
throw ectx.ExceptNotSupp();
case TlcModule.DataKind.UInt:
if (type == typeof(ulong))
{
return(value.Value <ulong>());
}
if (type == typeof(uint))
{
return(value.Value <uint>());
}
ectx.Assert(false);
throw ectx.ExceptNotSupp();
case TlcModule.DataKind.Dictionary:
ectx.Check(value is JObject, "Expected object value");
Func <IExceptionContext, JObject, Attributes, ComponentCatalog, object> makeDict = MakeDictionary <int>;
return(Utils.MarshalInvoke(makeDict, type.GetGenericArguments()[1], ectx, (JObject)value, attributes, catalog));
case TlcModule.DataKind.Component:
var jo = value as JObject;
ectx.Check(jo != null, "Expected object value");
// REVIEW: consider accepting strings alone.
var jName = jo[FieldNames.Name];
ectx.Check(jName != null, "Field '" + FieldNames.Name + "' is required for component.");
ectx.Check(jName is JValue, "Expected '" + FieldNames.Name + "' field to be a string.");
var name = jName.Value <string>();
ectx.Check(jo[FieldNames.Settings] == null || jo[FieldNames.Settings] is JObject,
"Expected '" + FieldNames.Settings + "' field to be an object");
return(GetComponentJson(ectx, type, name, jo[FieldNames.Settings] as JObject, catalog));
default:
var settings = value as JObject;
ectx.Check(settings != null, "Expected object value");
var inputBuilder = new InputBuilder(ectx, type, catalog);
if (inputBuilder._fields.Length == 0)
{
throw ectx.Except($"Unsupported input type: {dt}");
}
if (settings != null)
{
foreach (var pair in settings)
{
if (!inputBuilder.TrySetValueJson(pair.Key, pair.Value))
{
throw ectx.Except($"Unexpected value for component '{type}', field '{pair.Key}': '{pair.Value}'");
}
}
}
var missing = inputBuilder.GetMissingValues().ToArray();
if (missing.Length > 0)
{
throw ectx.Except($"The following required inputs were not provided for component '{type}': {string.Join(", ", missing)}");
}
return(inputBuilder.GetInstance());
}
}
catch (FormatException ex)
{
if (ex.IsMarked())
{
throw;
}
throw ectx.Except(ex, $"Failed to parse JSON value '{value}' as {type}");
}
}