From e3e49ec926a85eee7889023f8d5a3d7819f56e59 Mon Sep 17 00:00:00 2001
From: 4eb0da <4eb0da@yandex-team.com>
Date: Tue, 22 Jul 2025 15:44:47 +0300
Subject: [PATCH] len function
 commit_hash:bbac89dd05c977d0917c267464ba0774a751fed8

---
 client/web/divkit/src/expressions/funcs/dict.ts        | 10 ++++++++++
 .../expression_test_data/function_signatures_dict.json |  3 ++-
 test_data/expression_test_data/functions_dict.json     |  9 ++++++---
 3 files changed, 18 insertions(+), 4 deletions(-)

diff --git a/client/web/divkit/src/expressions/funcs/dict.ts b/client/web/divkit/src/expressions/funcs/dict.ts
index 792e062db..9829a6504 100644
--- a/client/web/divkit/src/expressions/funcs/dict.ts
+++ b/client/web/divkit/src/expressions/funcs/dict.ts
@@ -1,3 +1,4 @@
+import { toBigInt } from '../bigint';
 import { ARRAY, BOOLEAN, COLOR, DICT, INTEGER, NUMBER, STRING, URL } from '../const';
 import type { BooleanValue, DictValue, EvalContext, EvalTypes, EvalTypesWithoutDatetime, EvalValue, IntegerValue, NumberValue, StringValue } from '../eval';
 import { checkUrl, convertJsValueToDivKit, transformColorValue } from '../utils';
@@ -110,6 +111,13 @@ function isEmpty(_ext: EvalContext, dict: DictValue): BooleanValue {
     };
 }
 
+function len(_ext: EvalContext, dict: DictValue): IntegerValue {
+    return {
+        type: INTEGER,
+        value: toBigInt(Object.keys(dict.value).length)
+    };
+}
+
 export function registerDict(): void {
     const STRING_VARARG = {
         type: STRING,
@@ -176,4 +184,6 @@ export function registerDict(): void {
     registerMethod('getDict', [DICT, STRING_VARARG], getDictDict);
     registerMethod('containsKey', [DICT, STRING], containsKey);
     registerMethod('isEmpty', [DICT], isEmpty);
+
+    registerFunc('len', [DICT], len);
 }
diff --git a/test_data/expression_test_data/function_signatures_dict.json b/test_data/expression_test_data/function_signatures_dict.json
index 95feba2ac..32bdff260 100644
--- a/test_data/expression_test_data/function_signatures_dict.json
+++ b/test_data/expression_test_data/function_signatures_dict.json
@@ -780,7 +780,8 @@
       "result_type": "integer",
       "platforms": [
         "android",
-        "ios"
+        "ios",
+        "web"
       ]
     },
     {
diff --git a/test_data/expression_test_data/functions_dict.json b/test_data/expression_test_data/functions_dict.json
index c5eb31198..6df48c544 100644
--- a/test_data/expression_test_data/functions_dict.json
+++ b/test_data/expression_test_data/functions_dict.json
@@ -1479,7 +1479,8 @@
       ],
       "platforms": [
         "android",
-        "ios"
+        "ios",
+        "web"
       ]
     },
     {
@@ -1499,7 +1500,8 @@
       ],
       "platforms": [
         "android",
-        "ios"
+        "ios",
+        "web"
       ]
     },
     {
@@ -1521,7 +1523,8 @@
       ],
       "platforms": [
         "android",
-        "ios"
+        "ios",
+        "web"
       ]
     },
     {