private static Parameter[] LoadParameters(
IEnumerable <ParameterDTO> parameters,
Dictionary <string, DataType> typesByName,
List <string> errors,
UserProcessDTO process,
string paramType
)
{
var paramsWithTypes = parameters.Select(
p => new Tuple <ParameterDTO, DataType>
(
p,
typesByName.ContainsKey(p.Type)
? typesByName[p.Type]
: null
)
).ToArray();
var errorParams = paramsWithTypes
.Where(i => i.Item2 == null)
.Select(i => i.Item1);
foreach (var param in errorParams)
{
errors.Add($"Unrecognised type \"{param.Type}\" used by {paramType} of process {process.Name}");
}
return(paramsWithTypes
.Select(i => new Parameter(i.Item1.Name, i.Item2))
.ToArray());
}
private static List <Variable> LoadVariables(UserProcessDTO process, Dictionary <string, DataType> typesByName, List <string> errors)
{
var variables = new List <Variable>();
var usedNames = new HashSet <string>();
foreach (var variableData in process.Variables)
{
if (usedNames.Contains(variableData.Name))
{
errors.Add($"Multiple variables of process {process.Name} use the same name: {variableData.Name}");
continue;
}
usedNames.Add(variableData.Name);
if (!typesByName.TryGetValue(variableData.Type, out DataType dataType))
{
errors.Add($"Unrecognised type \"{variableData.Type}\" used by variable {variableData.Name} of process {process.Name}");
continue;
}
var value = variableData.InitialValue != null && dataType is IDeserializable
? (dataType as IDeserializable).Deserialize(variableData.InitialValue)
: dataType.GetDefaultValue();
variables.Add(new Variable(variableData.Name, dataType, value));
}
return(variables);
}
private static UserProcess CreateProcess(UserProcessDTO processData, Dictionary <string, DataType> typesByName, List <string> errors)
{
var inputs = LoadParameters(processData.Inputs, typesByName, errors, processData, "input");
var outputs = LoadParameters(processData.Outputs, typesByName, errors, processData, "output");
var variables = LoadVariables(processData, typesByName, errors);
return(new UserProcess
(
processData.Name,
processData.Description,
inputs,
outputs,
processData.ReturnPaths,
variables
));
}