Add diagnostics panel and navigation features to playground (#13357)

playground/.eslintrc

@@ -14,7 +14,7 @@
   "rules": {
     // Disable some recommended rules that we don't want to enforce.
     "@typescript-eslint/no-explicit-any": "off",
-    "@typescript-eslint/no-empty-function": "off"
+    "eqeqeq": ["error","always", { "null":  "never"}]
   },
   "settings": {
     "react": {

playground/src/Editor/Diagnostics.tsx

@@ -0,0 +1,92 @@
+import { Diagnostic } from "../pkg";
+import classNames from "classnames";
+import { Theme } from "./theme";
+import { useMemo } from "react";
+
+interface Props {
+  diagnostics: Diagnostic[];
+  theme: Theme;
+  onGoTo(line: number, column: number): void;
+}
+
+export default function Diagnostics({
+  diagnostics: unsorted,
+  theme,
+  onGoTo,
+}: Props) {
+  const diagnostics = useMemo(() => {
+    const sorted = [...unsorted];
+    sorted.sort((a, b) => {
+      if (a.location.row === b.location.row) {
+        return a.location.column - b.location.column;
+      }
+
+      return a.location.row - b.location.row;
+    });
+
+    return sorted;
+  }, [unsorted]);
+
+  return (
+    <div
+      className={classNames(
+        "flex flex-grow flex-col overflow-hidden",
+        theme === "dark" ? "text-white" : null,
+      )}
+    >
+      <div
+        className={classNames(
+          "border-b border-gray-200 px-2 py-1",
+          theme === "dark" ? "border-rock" : null,
+        )}
+      >
+        Diagnostics ({diagnostics.length})
+      </div>
+
+      <div className="flex flex-grow p-2 overflow-hidden">
+        <Items diagnostics={diagnostics} onGoTo={onGoTo} />
+      </div>
+    </div>
+  );
+}
+
+function Items({
+  diagnostics,
+  onGoTo,
+}: {
+  diagnostics: Array<Diagnostic>;
+  onGoTo(line: number, column: number): void;
+}) {
+  if (diagnostics.length === 0) {
+    return (
+      <div className={"flex flex-auto flex-col justify-center  items-center"}>
+        Everything is looking good!
+      </div>
+    );
+  }
+
+  return (
+    <ul className="space-y-0.5 flex-grow overflow-y-scroll">
+      {diagnostics.map((diagnostic) => {
+        return (
+          <li
+            key={`${diagnostic.location.row}:${diagnostic.location.column}-${diagnostic.code}`}
+          >
+            <button
+              onClick={() =>
+                onGoTo(diagnostic.location.row, diagnostic.location.column)
+              }
+              className="w-full text-start"
+            >
+              {diagnostic.message}{" "}
+              <span className="text-gray-500">
+                {diagnostic.code != null && `(${diagnostic.code})`} [Ln{" "}
+                {diagnostic.location.row}, Col {diagnostic.location.column}]
+              </span>
+            </button>
+          </li>
+        );
+      })}
+    </ul>
+  );
+}

playground/src/Editor/Editor.tsx

@@ -1,9 +1,15 @@
-import { useDeferredValue, useMemo, useState } from "react";
+import {
+  useCallback,
+  useDeferredValue,
+  useMemo,
+  useRef,
+  useState,
+} from "react";
 import { Panel, PanelGroup } from "react-resizable-panels";
 import { Diagnostic, Workspace } from "../pkg";
 import { ErrorMessage } from "./ErrorMessage";
 import PrimarySideBar from "./PrimarySideBar";
-import { HorizontalResizeHandle } from "./ResizeHandle";
+import { HorizontalResizeHandle, VerticalResizeHandle } from "./ResizeHandle";
 import SecondaryPanel, {
   SecondaryPanelResult,
   SecondaryTool,
@@ -12,6 +18,9 @@ import SecondarySideBar from "./SecondarySideBar";
 import SettingsEditor from "./SettingsEditor";
 import SourceEditor from "./SourceEditor";
 import { Theme } from "./theme";
+import Diagnostics from "./Diagnostics";
+import { editor } from "monaco-editor";
+import IStandaloneCodeEditor = editor.IStandaloneCodeEditor;
 
 type Tab = "Source" | "Settings";
 
@@ -40,6 +49,7 @@ export default function Editor({
   onSourceChanged,
   onSettingsChanged,
 }: Props) {
+  const editorRef = useRef<IStandaloneCodeEditor | null>(null);
   const [tab, setTab] = useState<Tab>("Source");
   const [secondaryTool, setSecondaryTool] = useState<SecondaryTool | null>(
     () => {
@@ -53,6 +63,7 @@ export default function Editor({
       }
     },
   );
+  const [selection, setSelection] = useState<number | null>(null);
 
   // Ideally this would be retrieved right from the URL... but routing without a proper
   // router is hard (there's no location changed event) and pulling in a router
@@ -75,6 +86,83 @@ export default function Editor({
     setSecondaryTool(tool);
   };
 
+  const handleGoTo = useCallback((line: number, column: number) => {
+    const editor = editorRef.current;
+
+    if (editor == null) {
+      return;
+    }
+
+    const range = {
+      startLineNumber: line,
+      startColumn: column,
+      endLineNumber: line,
+      endColumn: column,
+    };
+    editor.revealRange(range);
+    editor.setSelection(range);
+  }, []);
+
+  const handleSourceEditorMount = useCallback(
+    (editor: IStandaloneCodeEditor) => {
+      editorRef.current = editor;
+
+      editor.addAction({
+        contextMenuGroupId: "navigation",
+        contextMenuOrder: 0,
+        id: "reveal-node",
+        label: "Reveal node",
+        precondition: "editorTextFocus",
+
+        run(editor: editor.ICodeEditor): void | Promise<void> {
+          const position = editor.getPosition();
+          if (position == null) {
+            return;
+          }
+
+          const offset = editor.getModel()!.getOffsetAt(position);
+
+          setSelection(
+            charOffsetToByteOffset(editor.getModel()!.getValue(), offset),
+          );
+        },
+      });
+    },
+    [],
+  );
+
+  const handleSelectByteRange = useCallback(
+    (startByteOffset: number, endByteOffset: number) => {
+      const model = editorRef.current?.getModel();
+
+      if (model == null || editorRef.current == null) {
+        return;
+      }
+
+      const startCharacterOffset = byteOffsetToCharOffset(
+        source.pythonSource,
+        startByteOffset,
+      );
+      const endCharacterOffset = byteOffsetToCharOffset(
+        source.pythonSource,
+        endByteOffset,
+      );
+
+      const start = model.getPositionAt(startCharacterOffset);
+      const end = model.getPositionAt(endCharacterOffset);
+
+      const range = {
+        startLineNumber: start.lineNumber,
+        startColumn: start.column,
+        endLineNumber: end.lineNumber,
+        endColumn: end.column,
+      };
+      editorRef.current?.revealRange(range);
+      editorRef.current?.setSelection(range);
+    },
+    [source.pythonSource],
+  );
+
   const deferredSource = useDeferredValue(source);
 
   const checkResult: CheckResult = useMemo(() => {
@@ -149,20 +237,43 @@ export default function Editor({
     <>
       <PanelGroup direction="horizontal" autoSaveId="main">
         <PrimarySideBar onSelectTool={(tool) => setTab(tool)} selected={tab} />
-        <Panel id="main" order={0} className="my-2" minSize={10}>
-          <SourceEditor
-            visible={tab === "Source"}
-            source={source.pythonSource}
-            theme={theme}
-            diagnostics={checkResult.diagnostics}
-            onChange={onSourceChanged}
-          />
-          <SettingsEditor
-            visible={tab === "Settings"}
-            source={source.settingsSource}
-            theme={theme}
-            onChange={onSettingsChanged}
-          />
+
+        <Panel id="main" order={0} minSize={10}>
+          <PanelGroup id="main" direction="vertical">
+            <Panel minSize={10} className="my-2" order={0}>
+              <SourceEditor
+                visible={tab === "Source"}
+                source={source.pythonSource}
+                theme={theme}
+                diagnostics={checkResult.diagnostics}
+                onChange={onSourceChanged}
+                onMount={handleSourceEditorMount}
+              />
+              <SettingsEditor
+                visible={tab === "Settings"}
+                source={source.settingsSource}
+                theme={theme}
+                onChange={onSettingsChanged}
+              />
+            </Panel>
+            {tab === "Source" && (
+              <>
+                <VerticalResizeHandle />
+                <Panel
+                  id="diagnostics"
+                  minSize={3}
+                  order={1}
+                  className="my-2 flex flex-grow"
+                >
+                  <Diagnostics
+                    diagnostics={checkResult.diagnostics}
+                    onGoTo={handleGoTo}
+                    theme={theme}
+                  />
+                </Panel>
+              </>
+            )}
+          </PanelGroup>
         </Panel>
         {secondaryTool != null && (
           <>
@@ -177,6 +288,8 @@ export default function Editor({
                 theme={theme}
                 tool={secondaryTool}
                 result={checkResult.secondary}
+                selectionOffset={selection}
+                onSourceByteRangeClicked={handleSelectByteRange}
               />
             </Panel>
           </>
@@ -210,3 +323,25 @@ function parseSecondaryTool(tool: string): SecondaryTool | null {
 
   return null;
 }
+
+function byteOffsetToCharOffset(content: string, byteOffset: number): number {
+  // Create a Uint8Array from the UTF-8 string
+  const encoder = new TextEncoder();
+  const utf8Bytes = encoder.encode(content);
+
+  // Slice the byte array up to the byteOffset
+  const slicedBytes = utf8Bytes.slice(0, byteOffset);
+
+  // Decode the sliced bytes to get a substring
+  const decoder = new TextDecoder("utf-8");
+  const decodedString = decoder.decode(slicedBytes);
+  return decodedString.length;
+}
+
+function charOffsetToByteOffset(content: string, charOffset: number): number {
+  // Create a Uint8Array from the UTF-8 string
+  const encoder = new TextEncoder();
+  const utf8Bytes = encoder.encode(content.substring(0, charOffset));
+
+  return utf8Bytes.length;
+}

playground/src/Editor/PrimarySideBar.tsx

@@ -18,7 +18,7 @@ export default function PrimarySideBar({
         title="Source"
         position={"left"}
         onClick={() => onSelectTool("Source")}
-        selected={selected == "Source"}
+        selected={selected === "Source"}
       >
         <FileIcon />
       </SideBarEntry>
@@ -27,7 +27,7 @@ export default function PrimarySideBar({
         title="Settings"
         position={"left"}
         onClick={() => onSelectTool("Settings")}
-        selected={selected == "Settings"}
+        selected={selected === "Settings"}
       >
         <SettingsIcon />
       </SideBarEntry>

playground/src/Editor/SecondaryPanel.tsx

@@ -1,5 +1,8 @@
-import MonacoEditor from "@monaco-editor/react";
 import { Theme } from "./theme";
+import { useCallback, useEffect, useState } from "react";
+import { editor, Range } from "monaco-editor";
+import IStandaloneCodeEditor = editor.IStandaloneCodeEditor;
+import MonacoEditor from "@monaco-editor/react";
 
 export enum SecondaryTool {
   "Format" = "Format",
@@ -18,17 +21,27 @@ export type SecondaryPanelProps = {
   tool: SecondaryTool;
   result: SecondaryPanelResult;
   theme: Theme;
+  selectionOffset: number | null;
+  onSourceByteRangeClicked(start: number, end: number): void;
 };
 
 export default function SecondaryPanel({
   tool,
   result,
   theme,
+  selectionOffset,
+  onSourceByteRangeClicked,
 }: SecondaryPanelProps) {
   return (
     <div className="flex flex-col h-full">
       <div className="flex-grow">
-        <Content tool={tool} result={result} theme={theme} />
+        <Content
+          tool={tool}
+          result={result}
+          theme={theme}
+          selectionOffset={selectionOffset}
+          onSourceByteRangeClicked={onSourceByteRangeClicked}
+        />
       </div>
     </div>
   );
@@ -38,11 +51,135 @@ function Content({
   tool,
   result,
   theme,
+  selectionOffset,
+  onSourceByteRangeClicked,
 }: {
   tool: SecondaryTool;
   result: SecondaryPanelResult;
   theme: Theme;
+  selectionOffset: number | null;
+  onSourceByteRangeClicked(start: number, end: number): void;
 }) {
+  const [editor, setEditor] = useState<IStandaloneCodeEditor | null>(null);
+  const [prevSelection, setPrevSelection] = useState<number | null>(null);
+  const [ranges, setRanges] = useState<
+    Array<{ byteRange: { start: number; end: number }; textRange: Range }>
+  >([]);
+
+  if (
+    editor != null &&
+    selectionOffset != null &&
+    selectionOffset !== prevSelection
+  ) {
+    const range = ranges.findLast(
+      (range) =>
+        range.byteRange.start <= selectionOffset &&
+        range.byteRange.end >= selectionOffset,
+    );
+
+    if (range != null) {
+      editor.revealRange(range.textRange);
+      editor.setSelection(range.textRange);
+    }
+    setPrevSelection(selectionOffset);
+  }
+
+  useEffect(() => {
+    const model = editor?.getModel();
+    if (editor == null || model == null) {
+      return;
+    }
+
+    const handler = editor.onMouseDown((event) => {
+      if (event.target.range == null) {
+        return;
+      }
+
+      const range = model
+        .getDecorationsInRange(
+          event.target.range,
+          undefined,
+          true,
+          false,
+          false,
+        )
+        .map((decoration) => {
+          const decorationRange = decoration.range;
+          return ranges.find((range) =>
+            Range.equalsRange(range.textRange, decorationRange),
+          );
+        })
+        .find((range) => range != null);
+
+      if (range == null) {
+        return;
+      }
+
+      onSourceByteRangeClicked(range.byteRange.start, range.byteRange.end);
+    });
+
+    return () => handler.dispose();
+  }, [editor, onSourceByteRangeClicked, ranges]);
+
+  const handleDidMount = useCallback((editor: IStandaloneCodeEditor) => {
+    setEditor(editor);
+
+    const model = editor.getModel();
+    const collection = editor.createDecorationsCollection([]);
+
+    function updateRanges() {
+      if (model == null) {
+        setRanges([]);
+        collection.set([]);
+        return;
+      }
+
+      const matches = model.findMatches(
+        String.raw`(\d+)\.\.(\d+)`,
+        false,
+        true,
+        false,
+        ",",
+        true,
+      );
+
+      const ranges = matches
+        .map((match) => {
+          const startByteOffset = parseInt(match.matches![1] ?? "", 10);
+          const endByteOffset = parseInt(match.matches![2] ?? "", 10);
+
+          if (Number.isNaN(startByteOffset) || Number.isNaN(endByteOffset)) {
+            return null;
+          }
+
+          return {
+            byteRange: { start: startByteOffset, end: endByteOffset },
+            textRange: match.range,
+          };
+        })
+        .filter((range) => range != null);
+
+      setRanges(ranges);
+
+      const decorations = ranges.map((range) => {
+        return {
+          range: range.textRange,
+          options: {
+            inlineClassName:
+              "underline decoration-slate-600 decoration-1 cursor-pointer",
+          },
+        };
+      });
+
+      collection.set(decorations);
+    }
+
+    updateRanges();
+    const handler = editor.onDidChangeModelContent(updateRanges);
+
+    return () => handler.dispose();
+  }, []);
+
   if (result == null) {
     return "";
   } else {
@@ -81,6 +218,7 @@ function Content({
               scrollBeyondLastLine: false,
               contextmenu: false,
             }}
+            onMount={handleDidMount}
             language={language}
             value={result.content}
             theme={theme === "light" ? "Ayu-Light" : "Ayu-Dark"}

playground/src/Editor/SettingsEditor.tsx

@@ -70,7 +70,7 @@ export default function SettingsEditor({
         await navigator.clipboard.writeText(tomlSettings);
       },
     });
-    editor.onDidPaste((event) => {
+    const didPaste = editor.onDidPaste((event) => {
       const model = editor.getModel();
 
       if (model == null) {
@@ -97,6 +97,8 @@ export default function SettingsEditor({
         }
       }
     });
+
+    return () => didPaste.dispose();
   }, []);
 
   return (
@@ -123,7 +125,7 @@ function stripToolRuff(settings: object) {
   const { tool, ...nonToolSettings } = settings as any;
 
   // Flatten out `tool.ruff.x` to just `x`
-  if (typeof tool == "object" && !Array.isArray(tool)) {
+  if (typeof tool === "object" && !Array.isArray(tool)) {
     if (tool.ruff != null) {
       return { ...nonToolSettings, ...tool.ruff };
     }

playground/src/Editor/SourceEditor.tsx

@@ -15,6 +15,7 @@ import { useCallback, useEffect, useRef } from "react";
 import { Diagnostic } from "../pkg";
 import { Theme } from "./theme";
 import CodeActionProvider = languages.CodeActionProvider;
+import IStandaloneCodeEditor = editor.IStandaloneCodeEditor;
 
 type MonacoEditorState = {
   monaco: Monaco;
@@ -28,12 +29,14 @@ export default function SourceEditor({
   theme,
   diagnostics,
   onChange,
+  onMount,
 }: {
   visible: boolean;
   source: string;
   diagnostics: Diagnostic[];
   theme: Theme;
-  onChange: (pythonSource: string) => void;
+  onChange(pythonSource: string): void;
+  onMount(editor: IStandaloneCodeEditor): void;
 }) {
   const monacoRef = useRef<MonacoEditorState | null>(null);
 
@@ -70,7 +73,7 @@ export default function SourceEditor({
   );
 
   const handleMount: OnMount = useCallback(
-    (_editor, instance) => {
+    (editor, instance) => {
       const ruffActionsProvider = new RuffCodeActionProvider(diagnostics);
       const disposeCodeActionProvider =
         instance.languages.registerCodeActionProvider(
@@ -85,9 +88,11 @@ export default function SourceEditor({
         codeActionProvider: ruffActionsProvider,
         disposeCodeActionProvider,
       };
+
+      onMount(editor);
     },
 
-    [diagnostics],
+    [diagnostics, onMount],
   );
 
   return (
@@ -100,7 +105,7 @@ export default function SourceEditor({
         fontSize: 14,
         roundedSelection: false,
         scrollBeyondLastLine: false,
-        contextmenu: false,
+        contextmenu: true,
       }}
       language={"python"}
       wrapperProps={visible ? {} : { style: { display: "none" } }}