implement glob limiting in tool

Author: RomneyDa

core/tools/definitions/globSearch.ts

@@ -12,7 +12,8 @@ export const globSearchTool: Tool = {
   group: BUILT_IN_GROUP_NAME,
   function: {
     name: BuiltInToolNames.FileGlobSearch,
-    description: "Search for files in the project",
+    description:
+      "Search for files in the project. Output may be truncated; use targeted patterns",
     parameters: {
       type: "object",
       required: ["pattern"],

core/tools/implementations/globSearch.ts

@@ -1,12 +1,28 @@
 import { ToolImpl } from ".";
+import { ContextItem } from "../..";
 
+const MAX_AGENT_GLOB_RESULTS = 100;
 export const fileGlobSearchImpl: ToolImpl = async (args, extras) => {
-  const results = await extras.ide.getFileResults(args.pattern);
-  return [
+  const results = await extras.ide.getFileResults(
+    args.pattern,
+    MAX_AGENT_GLOB_RESULTS,
+  );
+  const contextItems: ContextItem[] = [
     {
       name: "File results",
       description: "Results from file glob search",
       content: results.join("\n"),
     },
   ];
+
+  // In case of truncation, add a warning
+  if (results.length === MAX_AGENT_GLOB_RESULTS) {
+    contextItems.push({
+      name: "Truncation warning",
+      description: "Inform the model that results were truncated",
+      content: `Warning: the results above were truncated to the first ${MAX_AGENT_GLOB_RESULTS} files. If the results are not satisfactory, refine your search pattern`,
+    });
+  }
+
+  return contextItems;
 };