Add reopen workspace and rebuild graph methods

src/scry/completion/dependency_graph.cr

@@ -83,6 +83,15 @@ module Scry::Completion::DependencyGraph
       graph
     end
 
+    def rebuild(graph, filename)
+      @lookup_paths
+        .map { |e| File.join(File.expand_path(e), "**", "*.cr") }
+        .uniq
+        .flat_map { |d| Dir.glob(d) }
+        .each { |file| process_requires(file, graph) if file == filename }
+      graph
+    end
+
     def process_requires(file, graph)
       requires = parse_requires(file)
       current_file_path = File.expand_path(file)

src/scry/context.cr

@@ -169,6 +169,7 @@ module Scry
       when FileEventType::Deleted
         PublishDiagnostic.new(@workspace, text_document.uri).clean
       when FileEventType::Changed
+        @workspace.reopen_workspace(text_document.filename)
         analyzer = Analyzer.new(@workspace, text_document)
         response = analyzer.run
         response

src/scry/workspace.cr

@@ -9,16 +9,23 @@ module Scry
     property open_files
     property dependency_graph : Completion::DependencyGraph::Graph
 
+    @lookup_path : Array(String)
+
     def initialize(root_uri, process_id, max_number_of_problems)
       @root_uri = root_uri
       @process_id = process_id
       @max_number_of_problems = max_number_of_problems
       @open_files = {} of String => {TextDocument, Completion::MethodDB}
       @dependency_graph = Completion::DependencyGraph::Graph.new
+      @lookup_path = ENV["CRYSTAL_PATH"].split(":") + [@root_uri]
     end
 
     def open_workspace
-      @dependency_graph = Completion::DependencyGraph::Builder.new(ENV["CRYSTAL_PATH"].split(":") + [@root_uri]).build
+      @dependency_graph = Completion::DependencyGraph::Builder.new(@lookup_path).build
+    end
+
+    def reopen_workspace(filename)
+      @dependency_graph = Completion::DependencyGraph::Builder.new(@lookup_path).rebuild(@dependency_graph, filename)
     end
 
     def put_file(params : DidOpenTextDocumentParams)