filter out diagnostics if they are in docsstring (#38)

Signed-off-by: Maxim Zaks <maxim.zaks@gmail.com>

Author: mzaks

extension/lsp/lsp.ts

@@ -322,6 +322,32 @@ export class MojoLSPManager extends DisposableContext {
           return next(method, param);
         }
       },
+      async handleDiagnostics(uri, diagnostics, next) {
+        if (config.get<boolean>(
+          'lsp.suppress.diagnostics.in.docstring',
+          /*workspaceFolder=*/ undefined,
+          false,
+        )) {
+          const document = await vscode.workspace.openTextDocument(uri);
+          const foldingRanges = await vscode.commands.executeCommand<vscode.FoldingRange[]>(
+            'vscode.executeFoldingRangeProvider',
+            uri,
+          );
+          const docstringRanges = foldingRanges.filter(r => {
+            return document.lineAt(r.start).text.trimStart().startsWith('"""')
+          });
+          diagnostics = diagnostics.filter(d => {
+            for (let index = 0; index < docstringRanges.length; index++) {
+              const range = docstringRanges[index];
+              if (d.range.start.line > range.start && d.range.end.line < range.end) {
+                return false;
+              }
+            }
+            return true;
+          });
+        }
+        next(uri, diagnostics);
+      },
     };
 
     // Create the language client and start the client.

package.json

@@ -159,6 +159,12 @@
             "type": "string"
           }
         },
+        "mojo.lsp.suppress.diagnostics.in.docstring": {
+          "scope": "resource",
+          "type": "boolean",
+          "default": false,
+          "description": "Suppress warnings and errors in docstring."
+        },
         "mojo.formatting.args": {
           "scope": "resource",
           "type": "array",