/// <summary>
/// Removes any program elements defined in the given file. If the scope is defined entirely
/// within the given file, then it removes itself from its parent.
/// </summary>
/// <param name="fileName">The file to remove.</param>
/// <returns>A collection of any unresolved scopes that result from removing the file. The
/// caller is responsible for re-resolving these as appropriate.</returns>
public override Collection <IScope> RemoveFile(string fileName)
{
Collection <IScope> unresolvedScopes = null;
if (LocationDictionary.ContainsKey(fileName))
{
if (LocationDictionary.Count == 1)
{
//this scope exists solely in the file to be deleted
if (ParentScope != null)
{
ParentScope.RemoveChild(this);
ParentScope = null;
}
}
else
{
//this NamedScope is defined in more than one file, delete only the parts in the given file
//Remove the file from the children
var unresolvedChildScopes = new List <IScope>();
foreach (var child in ChildScopes.ToList())
{
var result = child.RemoveFile(fileName);
if (result != null)
{
unresolvedChildScopes.AddRange(result);
}
}
//remove method calls
var callsInFile = MethodCallCollection.Where(call => call.Location.SourceFileName == fileName).ToList();
foreach (var call in callsInFile)
{
MethodCallCollection.Remove(call);
}
//remove declared variables
var declsInFile = DeclaredVariablesDictionary.Where(kvp => kvp.Value.Location.SourceFileName == fileName).ToList();
foreach (var kvp in declsInFile)
{
DeclaredVariablesDictionary.Remove(kvp.Key);
}
//remove parent scope candidates
var candidatesInFile = ParentScopeCandidates.Where(psc => psc.Location.SourceFileName == fileName).ToList();
foreach (var candidate in candidatesInFile)
{
ParentScopeCandidates.Remove(candidate);
}
//update locations
LocationDictionary.Remove(fileName);
if (DefinitionLocations.Any())
{
//This NamedScope is still defined somewhere, so re-add the unresolved children to it
if (unresolvedChildScopes.Count > 0)
{
foreach (var child in unresolvedChildScopes)
{
AddChildScope(child);
}
}
}
else
{
//This NamedScope is no longer defined, only referenced
//Return any remaining children to be re-resolved by our parent
if (MethodCallCollection.Any())
{
Debug.WriteLine("Found Namespace containing method calls but with only reference locations!");
Debug.WriteLine("Namespace locations:");
foreach (var loc in LocationDictionary.Values)
{
Debug.WriteLine(loc);
}
Debug.WriteLine("Method call locations:");
foreach (var mc in MethodCallCollection)
{
Debug.WriteLine(mc.Location);
}
}
if (DeclaredVariablesDictionary.Any())
{
Debug.WriteLine("Found Namespace containing declared variables but with only reference locations!");
Debug.WriteLine("Namespace locations:");
foreach (var loc in LocationDictionary.Values)
{
Debug.WriteLine(loc);
}
Debug.WriteLine("Variable locations:");
foreach (var dc in DeclaredVariablesDictionary.Values)
{
Debug.WriteLine(dc.Location);
}
}
if (ParentScope != null)
{
ParentScope.RemoveChild(this);
ParentScope = null;
}
unresolvedChildScopes.AddRange(ChildScopes);
//reset the UnresolvedParentScopeInUse so the children will be re-resolved by our parent
foreach (var namedChild in unresolvedChildScopes.OfType <INamedScope>())
{
namedChild.UnresolvedParentScopeInUse = null;
}
unresolvedScopes = new Collection <IScope>(unresolvedChildScopes);
}
}
}
return(unresolvedScopes);
}
