public MorphIntoRoleResult MorphType(MutationParameters parameters)
{
parameters.Validate();
var roleType = parameters.SourceType;
if (roleType == null) throw new ArgumentException("parameters must include a SourceType", "parameters");
_parameters = parameters;
if (!roleType.IsRole()) {
throw new InvalidOperationException("Cannot morph class into role");
}
Tracer.TraceVerbose("Morph role: {0}", roleType);
var result = new MorphIntoRoleResult();
CheckRole(roleType, result);
if (!result.Success) { return result; }
PreProcessRole(roleType); // TODO: result?
if (!result.Success) { return result; }
var roleStateClass = ExtractRoleStateClass(roleType, result);
if (!result.Success) { return result; }
// TODO: Cecil bug! We need to touch the SemanticsAttributes in order for it to remain on the method!
roleType.Methods.Select(m => m.SemanticsAttributes).ToList();
var roleCodeClass = ExtractRoleCodeClass(roleType, result);
if (!result.Success) { return result; }
MorphRoleIntoInterface(roleType, result);
if (!result.Success) { return result; }
result.CodeType = roleCodeClass;
result.StateType = roleStateClass;
return result;
}
private void CheckRole(TypeDefinition roleType, MorphIntoRoleResult result)
{
var validator = new RoleConstraintsValidator(roleType);
var checkResult = validator.Check(_parameters.Context);
result.AddResult(checkResult);
}
private void MorphRoleIntoInterface(TypeDefinition roleType, MorphIntoRoleResult result)
{
var morpher = new MorphIntoInterfaceMutator();
var morphIntoInterfaceResult = morpher.Morph(
new MutationParameters {
Context = _parameters.Context,
SourceType = roleType,
});
result.AddResult(morphIntoInterfaceResult);
}
private TypeDefinition ExtractRoleStateClass(TypeDefinition roleType, MorphIntoRoleResult result)
{
var stateClassExtractor = new ExtractStateClassMutator();
var extractStateClassResult = stateClassExtractor.ExtractType(
new ExtractTypeParameters {
Context = _parameters.Context,
SourceType = roleType,
TargetTypeName = DetermineStateClassName(roleType.Name),
AddTypeStrategy = AddTypeStrategy.AddAsNested
});
result.AddResult(extractStateClassResult);
return extractStateClassResult.TargetType;
}