Rubberduck.Parsing.VBA.RubberduckParser.ResolveInternal C# (CSharp) Method

        private void ResolveInternal(CancellationToken token)
        {
            var components = _state.Projects
                .Where(project => project.Protection == vbext_ProjectProtection.vbext_pp_none)
                .SelectMany(p => p.VBComponents.Cast<VBComponent>()).ToList();
            if (!_state.HasAllParseTrees(components))
            {
                return;
            }

            foreach (var kvp in _state.ParseTrees)
            {
                var qualifiedName = kvp.Key;
                if (true /*_state.IsModified(qualifiedName)*/)
                {
                    Debug.WriteLine("Module '{0}' {1}", qualifiedName.ComponentName, _state.IsModified(qualifiedName) ? "was modified" : "was NOT modified");
                    // modified module; walk parse tree and re-acquire all declarations
                    if (token.IsCancellationRequested) return;
                    ResolveDeclarations(qualifiedName.Component, kvp.Value);
                }
                else
                {
                    Debug.WriteLine(string.Format("Module '{0}' was not modified since last parse. Clearing identifier references...", kvp.Key.ComponentName));
                    // clear identifier references for non-modified modules
                    var declarations = _state.AllUserDeclarations.Where(item => item.QualifiedName.QualifiedModuleName.Equals(qualifiedName));
                    foreach (var declaration in declarations)
                    {
                        declaration.ClearReferences();
                    }
                }
            }

            // walk all parse trees (modified or not) for identifier references
            var finder = new DeclarationFinder(_state.AllDeclarations, _state.AllComments, _state.AllAnnotations);
            foreach (var kvp in _state.ParseTrees)
            {
                if (token.IsCancellationRequested) return;
                ResolveReferences(finder, kvp.Key.Component, kvp.Value);
            }
        }