private HashSet <IDeclaration> FindHotRootMethods([NotNull] ICSharpFile file, [NotNull] IPsiSourceFile sourceFile)
{
var api = file.GetSolution().GetComponent <UnityApi>();
var result = new HashSet <IDeclaration>();
var descendantsEnumerator = file.Descendants();
while (descendantsEnumerator.MoveNext())
{
switch (descendantsEnumerator.Current)
{
case IClassLikeDeclaration classLikeDeclaration:
var declaredSymbol = classLikeDeclaration.DeclaredElement;
if (declaredSymbol == null ||
!declaredSymbol.GetAllSuperTypes().Any(t => t.GetClrName().Equals(KnownTypes.MonoBehaviour)))
{
descendantsEnumerator.SkipThisNode();
}
break;
case IMethodDeclaration methodDeclaration:
// check that method is hot and add it to container
var declaredElement = methodDeclaration.DeclaredElement;
if (declaredElement == null)
{
break;
}
var name = declaredElement.ShortName;
if (ourKnownHotMonoBehaviourMethods.Contains(name) && api.IsEventFunction(declaredElement))
{
result.Add(methodDeclaration);
}
break;
case IInvocationExpression invocationExpression:
// we should find 'StartCoroutine' method, because passed symbol will be hot too
var reference = (invocationExpression.InvokedExpression as IReferenceExpression)?.Reference;
if (reference == null)
{
break;
}
var info = reference.Resolve();
if (info.ResolveErrorType != ResolveErrorType.OK)
{
break;
}
declaredElement = info.DeclaredElement as IMethod;
if (declaredElement == null)
{
break;
}
var containingType = declaredElement.GetContainingType();
if (containingType == null || containingType.GetClrName().Equals(KnownTypes.MonoBehaviour) &&
declaredElement.ShortName.Equals("StartCoroutine"))
{
var arguments = invocationExpression.Arguments;
if (arguments.Count == 0 || arguments.Count > 2)
{
break;
}
var firstArgument = arguments[0].Value;
if (firstArgument == null)
{
break;
}
var coroutineMethodDeclaration = ExtractMethodDeclarationFromStartCoroutine(firstArgument);
if (coroutineMethodDeclaration == null)
{
break;
}
var declarations = coroutineMethodDeclaration.GetDeclarationsIn(sourceFile).Where(t => t.GetSourceFile() == sourceFile);
foreach (var declaration in declarations)
{
result.Add(declaration);
}
}
break;
}
}
return(result);
}