public AddConstructorParametersCodeAction(
AddConstructorParametersFromMembersCodeRefactoringProvider service,
Document document,
State state,
ImmutableArray <IParameterSymbol> missingParameters)
{
_service = service;
_document = document;
_state = state;
_missingParameters = missingParameters;
}
public static State Generate(
AddConstructorParametersFromMembersCodeRefactoringProvider service,
ImmutableArray <ISymbol> selectedMembers)
{
var state = new State();
if (!state.TryInitialize(service, selectedMembers))
{
return(null);
}
return(state);
}
private bool TryInitialize(
AddConstructorParametersFromMembersCodeRefactoringProvider service,
ImmutableArray <ISymbol> selectedMembers)
{
if (!selectedMembers.All(IsWritableInstanceFieldOrProperty))
{
return(false);
}
this.ContainingType = selectedMembers[0].ContainingType;
if (this.ContainingType == null || this.ContainingType.TypeKind == TypeKind.Interface)
{
return(false);
}
var parameters = service.DetermineParameters(selectedMembers);
// We are trying to add these parameters into an existing constructor's parameter list.
// Comparing parameters based on names to make sure parameter list won't contains duplicate parameters after we
// append the new parameters
this.ConstructorToAddTo = GetDelegatedConstructorBasedOnParameterNames(this.ContainingType, parameters);
if (this.ConstructorToAddTo == null)
{
return(false);
}
var zippedParametersAndSelectedMembers = parameters.Zip(selectedMembers, (parameter, selectedMember) => (parameter, selectedMember));
var missingParametersBuilder = ArrayBuilder <IParameterSymbol> .GetInstance();
var missingMembersBuilder = ArrayBuilder <ISymbol> .GetInstance();
var constructorParamNames = this.ConstructorToAddTo.Parameters.SelectAsArray(p => p.Name);
foreach ((var parameter, var selectedMember) in zippedParametersAndSelectedMembers)
{
if (!constructorParamNames.Contains(parameter.Name))
{
missingParametersBuilder.Add(parameter);
missingMembersBuilder.Add(selectedMember);
}
}
this.MissingParameters = missingParametersBuilder.ToImmutableAndFree();
this.MissingMembers = missingMembersBuilder.ToImmutableAndFree();
return(MissingParameters.Length != 0);
}