feat(commands): add rust-analyzer.viewFileText

README.md

@@ -108,6 +108,7 @@ You can use these commands by `:CocCommand XYZ`.
 | rust-analyzer.toggleInlayHints | Toggle inlay hints on/off |
 | rust-analyzer.upgrade | Download latest `rust-analyzer` from [GitHub release](https://github.com/rust-analyzer/rust-analyzer/releases) |
 | rust-analyzer.viewHir | View Hir |
+| rust-analyzer.viewFileText | View File Text |
 | rust-analyzer.viewCrateGraph | View Crate Graph |
 | rust-analyzer.viewFullCrateGraph | View Crate Graph (Full) |
 | rust-analyzer.shuffleCrateGraph | Shuffle Crate Graph |

package.json

@@ -888,6 +888,11 @@
         "title": "View Hir",
         "category": "Rust Analyzer"
       },
+      {
+        "command": "rust-analyzer.viewFileText",
+        "title": "View File Text (as seen by the server)",
+        "category": "Rust Analyzer"
+      },
       {
         "command": "rust-analyzer.viewItemTree",
         "title": "Debug ItemTree",

src/commands.ts

@@ -592,6 +592,24 @@ export function viewHir(ctx: Ctx): Cmd {
   };
 }
 
+export function viewFileText(ctx: Ctx): Cmd {
+  return async () => {
+    const { document } = await workspace.getCurrentState();
+    if (!isRustDocument(document)) return;
+
+    const ret = await ctx.client.sendRequest(ra.viewFileText, { uri: document.uri });
+    if (!ret) return;
+
+    const nvim = workspace.nvim;
+    nvim.pauseNotification();
+    nvim.command(`edit +setl\\ buftype=nofile [TEXT]`, true);
+    nvim.command('setl nobuflisted bufhidden=wipe', true);
+    nvim.call('append', [0, ret.split('\n')], true);
+    nvim.command(`exe 1`, true);
+    await nvim.resumeNotification(true);
+  };
+}
+
 export function echoRunCommandLine(ctx: Ctx) {
   return async () => {
     const runnable = await fetchRunnable(ctx);

src/index.ts

@@ -51,6 +51,7 @@ export async function activate(context: ExtensionContext): Promise<void> {
   ctx.registerCommand('ssr', cmds.ssr);
   ctx.registerCommand('upgrade', cmds.upgrade);
   ctx.registerCommand('viewHir', cmds.viewHir);
+  ctx.registerCommand('viewFileText', cmds.viewFileText);
   ctx.registerCommand('openDocs', cmds.openDocs);
   ctx.registerCommand('joinLines', cmds.joinLines);
   ctx.registerCommand('peekTests', cmds.peekTests);

src/lsp_ext.ts

@@ -37,6 +37,8 @@ export const syntaxTree = new lc.RequestType<SyntaxTreeParams, string, void>('ru
 
 export const viewHir = new lc.RequestType<lc.TextDocumentPositionParams, string, void>('rust-analyzer/viewHir');
 
+export const viewFileText = new lc.RequestType<lc.TextDocumentIdentifier, string, void>('rust-analyzer/viewFileText');
+
 export interface ViewItemTreeParams {
   textDocument: lc.TextDocumentIdentifier;
 }