From fb714834adfb0e1e36c4cfc7ca288391cfc18986 Mon Sep 17 00:00:00 2001
From: Dmitry Vyukov <dvyukov@google.com>
Date: Mon, 19 Jan 2026 15:15:15 +0100
Subject: pkg/codesearch: add dir-index command

dir-index provides a list of subdirectories and files in the given
directory in the source tree.
---
 pkg/aflow/tool/codesearcher/codesearcher.go | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

(limited to 'pkg/aflow/tool/codesearcher')

diff --git a/pkg/aflow/tool/codesearcher/codesearcher.go b/pkg/aflow/tool/codesearcher/codesearcher.go
index 79827d269..c336a0ca4 100644
--- a/pkg/aflow/tool/codesearcher/codesearcher.go
+++ b/pkg/aflow/tool/codesearcher/codesearcher.go
@@ -14,6 +14,9 @@ import (
 )
 
 var Tools = []aflow.Tool{
+	aflow.NewFuncTool("codesearch-dir-index", dirIndex, `
+Tool provides list of source files and subdirectories in the given directory in the source tree.
+`),
 	aflow.NewFuncTool("codesearch-file-index", fileIndex, `
 Tool provides list of entities defined in the given source file.
 Entity can be function, struct, or global variable.
@@ -54,6 +57,17 @@ type prepareResult struct {
 	Index index
 }
 
+// nolint: lll
+type dirIndexArgs struct {
+	Dir string `jsonschema:"Relative directory in the source tree. Use an empty string for the root of the tree, or paths like 'net/ipv4/' for subdirs."`
+}
+
+type dirIndexResult struct {
+	Missing bool     `jsonschema:"Set to true if the requested directory does not exist."`
+	Subdirs []string `jsonschema:"List of direct subdirectories."`
+	Files   []string `jsonschema:"List of source files."`
+}
+
 type fileIndexArgs struct {
 	SourceFile string `jsonschema:"Source file path."`
 }
@@ -130,6 +144,16 @@ func prepare(ctx *aflow.Context, args prepareArgs) (prepareResult, error) {
 	return prepareResult{index{csIndex}}, err
 }
 
+func dirIndex(ctx *aflow.Context, state prepareResult, args dirIndexArgs) (dirIndexResult, error) {
+	ok, subdirs, files, err := state.Index.DirIndex(args.Dir)
+	res := dirIndexResult{
+		Missing: !ok,
+		Subdirs: subdirs,
+		Files:   files,
+	}
+	return res, err
+}
+
 func fileIndex(ctx *aflow.Context, state prepareResult, args fileIndexArgs) (fileIndexResult, error) {
 	ok, entities, err := state.Index.FileIndex(args.SourceFile)
 	res := fileIndexResult{
-- 
cgit mrf-deployment