Merge branch 'webserver_remove_lambas' into integration

esphome/components/json/json_util.cpp

@@ -35,25 +35,10 @@ struct SpiRamAllocator : ArduinoJson::Allocator {
 
 std::string build_json(const json_build_t &f) {
   // NOLINTBEGIN(clang-analyzer-cplusplus.NewDeleteLeaks) false positive with ArduinoJson
-#ifdef USE_PSRAM
-  auto doc_allocator = SpiRamAllocator();
-  JsonDocument json_document(&doc_allocator);
-#else
-  JsonDocument json_document;
-#endif
-  if (json_document.overflowed()) {
-    ESP_LOGE(TAG, "Could not allocate memory for JSON document!");
-    return "{}";
-  }
-  JsonObject root = json_document.to<JsonObject>();
+  JsonBuilder builder;
+  JsonObject root = builder.root();
   f(root);
-  if (json_document.overflowed()) {
-    ESP_LOGE(TAG, "Could not allocate memory for JSON document!");
-    return "{}";
-  }
-  std::string output;
-  serializeJson(json_document, output);
-  return output;
+  return builder.serialize();
   // NOLINTEND(clang-analyzer-cplusplus.NewDeleteLeaks)
 }
 
@@ -84,5 +69,53 @@ bool parse_json(const std::string &data, const json_parse_t &f) {
   // NOLINTEND(clang-analyzer-cplusplus.NewDeleteLeaks)
 }
 
+// JsonBuilder implementation
+class JsonBuilder::Impl {
+ public:
+  Impl() {
+#ifdef USE_PSRAM
+    allocator_ = std::make_unique<SpiRamAllocator>();
+    doc_ = std::make_unique<JsonDocument>(allocator_.get());
+#else
+    doc_ = std::make_unique<JsonDocument>();
+#endif
+  }
+
+  JsonObject root() {
+    if (!root_created_) {
+      root_ = doc_->to<JsonObject>();
+      root_created_ = true;
+    }
+    return root_;
+  }
+
+  bool overflowed() const { return doc_->overflowed(); }
+
+  void serialize_to(std::string &output) { serializeJson(*doc_, output); }
+
+ private:
+#ifdef USE_PSRAM
+  std::unique_ptr<SpiRamAllocator> allocator_;
+#endif
+  std::unique_ptr<JsonDocument> doc_;
+  JsonObject root_;
+  bool root_created_{false};
+};
+
+JsonBuilder::JsonBuilder() : impl_(std::make_unique<Impl>()) {}
+JsonBuilder::~JsonBuilder() = default;
+
+JsonObject JsonBuilder::root() { return impl_->root(); }
+
+std::string JsonBuilder::serialize() {
+  if (impl_->overflowed()) {
+    ESP_LOGE(TAG, "JSON document overflow");
+    return "{}";
+  }
+  std::string output;
+  impl_->serialize_to(output);
+  return output;
+}
+
 }  // namespace json
 }  // namespace esphome

esphome/components/json/json_util.h

@@ -25,5 +25,20 @@ std::string build_json(const json_build_t &f);
 /// Parse a JSON string and run the provided json parse function if it's valid.
 bool parse_json(const std::string &data, const json_parse_t &f);
 
+/// Builder class for creating JSON documents without lambdas
+class JsonBuilder {
+ public:
+  JsonBuilder();
+  ~JsonBuilder();
+
+  JsonObject root();
+  std::string serialize();
+
+ private:
+  // Use opaque pointer to hide implementation details
+  class Impl;
+  std::unique_ptr<Impl> impl_;
+};
+
 }  // namespace json
 }  // namespace esphome

esphome/components/web_server/web_server.cpp

@@ -228,10 +228,11 @@ void DeferredUpdateEventSourceList::on_client_connect_(WebServer *ws, DeferredUp
 
 #ifdef USE_WEBSERVER_SORTING
   for (auto &group : ws->sorting_groups_) {
-    message = json::build_json([group](JsonObject root) {
-      root["name"] = group.second.name;
-      root["sorting_weight"] = group.second.weight;
-    });
+    json::JsonBuilder builder;
+    JsonObject root = builder.root();
+    root["name"] = group.second.name;
+    root["sorting_weight"] = group.second.weight;
+    message = builder.serialize();
 
     // up to 31 groups should be able to be queued initially without defer
     source->try_send_nodefer(message.c_str(), "sorting_group");
@@ -265,17 +266,20 @@ void WebServer::set_js_include(const char *js_include) { this->js_include_ = js_
 #endif
 
 std::string WebServer::get_config_json() {
-  return json::build_json([this](JsonObject root) {
-    root["title"] = App.get_friendly_name().empty() ? App.get_name() : App.get_friendly_name();
-    root["comment"] = App.get_comment();
+  json::JsonBuilder builder;
+  JsonObject root = builder.root();
+
+  root["title"] = App.get_friendly_name().empty() ? App.get_name() : App.get_friendly_name();
+  root["comment"] = App.get_comment();
 #if defined(USE_WEBSERVER_OTA_DISABLED) || !defined(USE_WEBSERVER_OTA)
-    root["ota"] = false;  // Note: USE_WEBSERVER_OTA_DISABLED only affects web_server, not captive_portal
+  root["ota"] = false;  // Note: USE_WEBSERVER_OTA_DISABLED only affects web_server, not captive_portal
 #else
-    root["ota"] = true;
+  root["ota"] = true;
 #endif
-    root["log"] = this->expose_log_;
-    root["lang"] = "en";
-  });
+  root["log"] = this->expose_log_;
+  root["lang"] = "en";
+
+  return builder.serialize();
 }
 
 void WebServer::setup() {
@@ -435,22 +439,26 @@ std::string WebServer::sensor_all_json_generator(WebServer *web_server, void *so
   return web_server->sensor_json((sensor::Sensor *) (source), ((sensor::Sensor *) (source))->state, DETAIL_ALL);
 }
 std::string WebServer::sensor_json(sensor::Sensor *obj, float value, JsonDetail start_config) {
-  return json::build_json([this, obj, value, start_config](JsonObject root) {
-    std::string state;
-    if (std::isnan(value)) {
-      state = "NA";
-    } else {
-      state = value_accuracy_to_string(value, obj->get_accuracy_decimals());
-      if (!obj->get_unit_of_measurement().empty())
-        state += " " + obj->get_unit_of_measurement();
-    }
-    set_json_icon_state_value(root, obj, "sensor-" + obj->get_object_id(), state, value, start_config);
-    if (start_config == DETAIL_ALL) {
-      this->add_sorting_info_(root, obj);
-      if (!obj->get_unit_of_measurement().empty())
-        root["uom"] = obj->get_unit_of_measurement();
-    }
-  });
+  json::JsonBuilder builder;
+  JsonObject root = builder.root();
+
+  // Build JSON directly inline
+  std::string state;
+  if (std::isnan(value)) {
+    state = "NA";
+  } else {
+    state = value_accuracy_to_string(value, obj->get_accuracy_decimals());
+    if (!obj->get_unit_of_measurement().empty())
+      state += " " + obj->get_unit_of_measurement();
+  }
+  set_json_icon_state_value(root, obj, "sensor-" + obj->get_object_id(), state, value, start_config);
+  if (start_config == DETAIL_ALL) {
+    this->add_sorting_info_(root, obj);
+    if (!obj->get_unit_of_measurement().empty())
+      root["uom"] = obj->get_unit_of_measurement();
+  }
+
+  return builder.serialize();
 }
 #endif
 
@@ -483,12 +491,15 @@ std::string WebServer::text_sensor_all_json_generator(WebServer *web_server, voi
 }
 std::string WebServer::text_sensor_json(text_sensor::TextSensor *obj, const std::string &value,
                                         JsonDetail start_config) {
-  return json::build_json([this, obj, value, start_config](JsonObject root) {
-    set_json_icon_state_value(root, obj, "text_sensor-" + obj->get_object_id(), value, value, start_config);
-    if (start_config == DETAIL_ALL) {
-      this->add_sorting_info_(root, obj);
-    }
-  });
+  json::JsonBuilder builder;
+  JsonObject root = builder.root();
+
+  set_json_icon_state_value(root, obj, "text_sensor-" + obj->get_object_id(), value, value, start_config);
+  if (start_config == DETAIL_ALL) {
+    this->add_sorting_info_(root, obj);
+  }
+
+  return builder.serialize();
 }
 #endif
 
@@ -553,13 +564,16 @@ std::string WebServer::switch_all_json_generator(WebServer *web_server, void *so
   return web_server->switch_json((switch_::Switch *) (source), ((switch_::Switch *) (source))->state, DETAIL_ALL);
 }
 std::string WebServer::switch_json(switch_::Switch *obj, bool value, JsonDetail start_config) {
-  return json::build_json([this, obj, value, start_config](JsonObject root) {
-    set_json_icon_state_value(root, obj, "switch-" + obj->get_object_id(), value ? "ON" : "OFF", value, start_config);
-    if (start_config == DETAIL_ALL) {
-      root["assumed_state"] = obj->assumed_state();
-      this->add_sorting_info_(root, obj);
-    }
-  });
+  json::JsonBuilder builder;
+  JsonObject root = builder.root();
+
+  set_json_icon_state_value(root, obj, "switch-" + obj->get_object_id(), value ? "ON" : "OFF", value, start_config);
+  if (start_config == DETAIL_ALL) {
+    root["assumed_state"] = obj->assumed_state();
+    this->add_sorting_info_(root, obj);
+  }
+
+  return builder.serialize();
 }
 #endif
 
@@ -590,12 +604,15 @@ std::string WebServer::button_all_json_generator(WebServer *web_server, void *so
   return web_server->button_json((button::Button *) (source), DETAIL_ALL);
 }
 std::string WebServer::button_json(button::Button *obj, JsonDetail start_config) {
-  return json::build_json([this, obj, start_config](JsonObject root) {
-    set_json_id(root, obj, "button-" + obj->get_object_id(), start_config);
-    if (start_config == DETAIL_ALL) {
-      this->add_sorting_info_(root, obj);
-    }
-  });
+  json::JsonBuilder builder;
+  JsonObject root = builder.root();
+
+  set_json_id(root, obj, "button-" + obj->get_object_id(), start_config);
+  if (start_config == DETAIL_ALL) {
+    this->add_sorting_info_(root, obj);
+  }
+
+  return builder.serialize();
 }
 #endif
 
@@ -627,13 +644,16 @@ std::string WebServer::binary_sensor_all_json_generator(WebServer *web_server, v
                                         ((binary_sensor::BinarySensor *) (source))->state, DETAIL_ALL);
 }
 std::string WebServer::binary_sensor_json(binary_sensor::BinarySensor *obj, bool value, JsonDetail start_config) {
-  return json::build_json([this, obj, value, start_config](JsonObject root) {
-    set_json_icon_state_value(root, obj, "binary_sensor-" + obj->get_object_id(), value ? "ON" : "OFF", value,
-                              start_config);
-    if (start_config == DETAIL_ALL) {
-      this->add_sorting_info_(root, obj);
-    }
-  });
+  json::JsonBuilder builder;
+  JsonObject root = builder.root();
+
+  set_json_icon_state_value(root, obj, "binary_sensor-" + obj->get_object_id(), value ? "ON" : "OFF", value,
+                            start_config);
+  if (start_config == DETAIL_ALL) {
+    this->add_sorting_info_(root, obj);
+  }
+
+  return builder.serialize();
 }
 #endif
 
@@ -694,20 +714,23 @@ std::string WebServer::fan_all_json_generator(WebServer *web_server, void *sourc
   return web_server->fan_json((fan::Fan *) (source), DETAIL_ALL);
 }
 std::string WebServer::fan_json(fan::Fan *obj, JsonDetail start_config) {
-  return json::build_json([this, obj, start_config](JsonObject root) {
-    set_json_icon_state_value(root, obj, "fan-" + obj->get_object_id(), obj->state ? "ON" : "OFF", obj->state,
-                              start_config);
-    const auto traits = obj->get_traits();
-    if (traits.supports_speed()) {
-      root["speed_level"] = obj->speed;
-      root["speed_count"] = traits.supported_speed_count();
-    }
-    if (obj->get_traits().supports_oscillation())
-      root["oscillation"] = obj->oscillating;
-    if (start_config == DETAIL_ALL) {
-      this->add_sorting_info_(root, obj);
-    }
-  });
+  json::JsonBuilder builder;
+  JsonObject root = builder.root();
+
+  set_json_icon_state_value(root, obj, "fan-" + obj->get_object_id(), obj->state ? "ON" : "OFF", obj->state,
+                            start_config);
+  const auto traits = obj->get_traits();
+  if (traits.supports_speed()) {
+    root["speed_level"] = obj->speed;
+    root["speed_count"] = traits.supported_speed_count();
+  }
+  if (obj->get_traits().supports_oscillation())
+    root["oscillation"] = obj->oscillating;
+  if (start_config == DETAIL_ALL) {
+    this->add_sorting_info_(root, obj);
+  }
+
+  return builder.serialize();
 }
 #endif
 
@@ -767,20 +790,23 @@ std::string WebServer::light_all_json_generator(WebServer *web_server, void *sou
   return web_server->light_json((light::LightState *) (source), DETAIL_ALL);
 }
 std::string WebServer::light_json(light::LightState *obj, JsonDetail start_config) {
-  return json::build_json([this, obj, start_config](JsonObject root) {
-    set_json_id(root, obj, "light-" + obj->get_object_id(), start_config);
-    root["state"] = obj->remote_values.is_on() ? "ON" : "OFF";
+  json::JsonBuilder builder;
+  JsonObject root = builder.root();
 
-    light::LightJSONSchema::dump_json(*obj, root);
-    if (start_config == DETAIL_ALL) {
-      JsonArray opt = root["effects"].to<JsonArray>();
-      opt.add("None");
-      for (auto const &option : obj->get_effects()) {
-        opt.add(option->get_name());
-      }
-      this->add_sorting_info_(root, obj);
+  set_json_id(root, obj, "light-" + obj->get_object_id(), start_config);
+  root["state"] = obj->remote_values.is_on() ? "ON" : "OFF";
+
+  light::LightJSONSchema::dump_json(*obj, root);
+  if (start_config == DETAIL_ALL) {
+    JsonArray opt = root["effects"].to<JsonArray>();
+    opt.add("None");
+    for (auto const &option : obj->get_effects()) {
+      opt.add(option->get_name());
     }
-  });
+    this->add_sorting_info_(root, obj);
+  }
+
+  return builder.serialize();
 }
 #endif
 
@@ -839,19 +865,22 @@ std::string WebServer::cover_all_json_generator(WebServer *web_server, void *sou
   return web_server->cover_json((cover::Cover *) (source), DETAIL_ALL);
 }
 std::string WebServer::cover_json(cover::Cover *obj, JsonDetail start_config) {
-  return json::build_json([this, obj, start_config](JsonObject root) {
-    set_json_icon_state_value(root, obj, "cover-" + obj->get_object_id(), obj->is_fully_closed() ? "CLOSED" : "OPEN",
-                              obj->position, start_config);
-    root["current_operation"] = cover::cover_operation_to_str(obj->current_operation);
+  json::JsonBuilder builder;
+  JsonObject root = builder.root();
 
-    if (obj->get_traits().get_supports_position())
-      root["position"] = obj->position;
-    if (obj->get_traits().get_supports_tilt())
-      root["tilt"] = obj->tilt;
-    if (start_config == DETAIL_ALL) {
-      this->add_sorting_info_(root, obj);
-    }
-  });
+  set_json_icon_state_value(root, obj, "cover-" + obj->get_object_id(), obj->is_fully_closed() ? "CLOSED" : "OPEN",
+                            obj->position, start_config);
+  root["current_operation"] = cover::cover_operation_to_str(obj->current_operation);
+
+  if (obj->get_traits().get_supports_position())
+    root["position"] = obj->position;
+  if (obj->get_traits().get_supports_tilt())
+    root["tilt"] = obj->tilt;
+  if (start_config == DETAIL_ALL) {
+    this->add_sorting_info_(root, obj);
+  }
+
+  return builder.serialize();
 }
 #endif
 
@@ -894,31 +923,33 @@ std::string WebServer::number_all_json_generator(WebServer *web_server, void *so
   return web_server->number_json((number::Number *) (source), ((number::Number *) (source))->state, DETAIL_ALL);
 }
 std::string WebServer::number_json(number::Number *obj, float value, JsonDetail start_config) {
-  return json::build_json([this, obj, value, start_config](JsonObject root) {
-    set_json_id(root, obj, "number-" + obj->get_object_id(), start_config);
-    if (start_config == DETAIL_ALL) {
-      root["min_value"] =
-          value_accuracy_to_string(obj->traits.get_min_value(), step_to_accuracy_decimals(obj->traits.get_step()));
-      root["max_value"] =
-          value_accuracy_to_string(obj->traits.get_max_value(), step_to_accuracy_decimals(obj->traits.get_step()));
-      root["step"] =
-          value_accuracy_to_string(obj->traits.get_step(), step_to_accuracy_decimals(obj->traits.get_step()));
-      root["mode"] = (int) obj->traits.get_mode();
-      if (!obj->traits.get_unit_of_measurement().empty())
-        root["uom"] = obj->traits.get_unit_of_measurement();
-      this->add_sorting_info_(root, obj);
-    }
-    if (std::isnan(value)) {
-      root["value"] = "\"NaN\"";
-      root["state"] = "NA";
-    } else {
-      root["value"] = value_accuracy_to_string(value, step_to_accuracy_decimals(obj->traits.get_step()));
-      std::string state = value_accuracy_to_string(value, step_to_accuracy_decimals(obj->traits.get_step()));
-      if (!obj->traits.get_unit_of_measurement().empty())
-        state += " " + obj->traits.get_unit_of_measurement();
-      root["state"] = state;
-    }
-  });
+  json::JsonBuilder builder;
+  JsonObject root = builder.root();
+
+  set_json_id(root, obj, "number-" + obj->get_object_id(), start_config);
+  if (start_config == DETAIL_ALL) {
+    root["min_value"] =
+        value_accuracy_to_string(obj->traits.get_min_value(), step_to_accuracy_decimals(obj->traits.get_step()));
+    root["max_value"] =
+        value_accuracy_to_string(obj->traits.get_max_value(), step_to_accuracy_decimals(obj->traits.get_step()));
+    root["step"] = value_accuracy_to_string(obj->traits.get_step(), step_to_accuracy_decimals(obj->traits.get_step()));
+    root["mode"] = (int) obj->traits.get_mode();
+    if (!obj->traits.get_unit_of_measurement().empty())
+      root["uom"] = obj->traits.get_unit_of_measurement();
+    this->add_sorting_info_(root, obj);
+  }
+  if (std::isnan(value)) {
+    root["value"] = "\"NaN\"";
+    root["state"] = "NA";
+  } else {
+    root["value"] = value_accuracy_to_string(value, step_to_accuracy_decimals(obj->traits.get_step()));
+    std::string state = value_accuracy_to_string(value, step_to_accuracy_decimals(obj->traits.get_step()));
+    if (!obj->traits.get_unit_of_measurement().empty())
+      state += " " + obj->traits.get_unit_of_measurement();
+    root["state"] = state;
+  }
+
+  return builder.serialize();
 }
 #endif
 
@@ -966,15 +997,18 @@ std::string WebServer::date_all_json_generator(WebServer *web_server, void *sour
   return web_server->date_json((datetime::DateEntity *) (source), DETAIL_ALL);
 }
 std::string WebServer::date_json(datetime::DateEntity *obj, JsonDetail start_config) {
-  return json::build_json([this, obj, start_config](JsonObject root) {
-    set_json_id(root, obj, "date-" + obj->get_object_id(), start_config);
-    std::string value = str_sprintf("%d-%02d-%02d", obj->year, obj->month, obj->day);
-    root["value"] = value;
-    root["state"] = value;
-    if (start_config == DETAIL_ALL) {
-      this->add_sorting_info_(root, obj);
-    }
-  });
+  json::JsonBuilder builder;
+  JsonObject root = builder.root();
+
+  set_json_id(root, obj, "date-" + obj->get_object_id(), start_config);
+  std::string value = str_sprintf("%d-%02d-%02d", obj->year, obj->month, obj->day);
+  root["value"] = value;
+  root["state"] = value;
+  if (start_config == DETAIL_ALL) {
+    this->add_sorting_info_(root, obj);
+  }
+
+  return builder.serialize();
 }
 #endif  // USE_DATETIME_DATE
 
@@ -1021,15 +1055,18 @@ std::string WebServer::time_all_json_generator(WebServer *web_server, void *sour
   return web_server->time_json((datetime::TimeEntity *) (source), DETAIL_ALL);
 }
 std::string WebServer::time_json(datetime::TimeEntity *obj, JsonDetail start_config) {
-  return json::build_json([this, obj, start_config](JsonObject root) {
-    set_json_id(root, obj, "time-" + obj->get_object_id(), start_config);
-    std::string value = str_sprintf("%02d:%02d:%02d", obj->hour, obj->minute, obj->second);
-    root["value"] = value;
-    root["state"] = value;
-    if (start_config == DETAIL_ALL) {
-      this->add_sorting_info_(root, obj);
-    }
-  });
+  json::JsonBuilder builder;
+  JsonObject root = builder.root();
+
+  set_json_id(root, obj, "time-" + obj->get_object_id(), start_config);
+  std::string value = str_sprintf("%02d:%02d:%02d", obj->hour, obj->minute, obj->second);
+  root["value"] = value;
+  root["state"] = value;
+  if (start_config == DETAIL_ALL) {
+    this->add_sorting_info_(root, obj);
+  }
+
+  return builder.serialize();
 }
 #endif  // USE_DATETIME_TIME
 
@@ -1076,16 +1113,19 @@ std::string WebServer::datetime_all_json_generator(WebServer *web_server, void *
   return web_server->datetime_json((datetime::DateTimeEntity *) (source), DETAIL_ALL);
 }
 std::string WebServer::datetime_json(datetime::DateTimeEntity *obj, JsonDetail start_config) {
-  return json::build_json([this, obj, start_config](JsonObject root) {
-    set_json_id(root, obj, "datetime-" + obj->get_object_id(), start_config);
-    std::string value = str_sprintf("%d-%02d-%02d %02d:%02d:%02d", obj->year, obj->month, obj->day, obj->hour,
-                                    obj->minute, obj->second);
-    root["value"] = value;
-    root["state"] = value;
-    if (start_config == DETAIL_ALL) {
-      this->add_sorting_info_(root, obj);
-    }
-  });
+  json::JsonBuilder builder;
+  JsonObject root = builder.root();
+
+  set_json_id(root, obj, "datetime-" + obj->get_object_id(), start_config);
+  std::string value =
+      str_sprintf("%d-%02d-%02d %02d:%02d:%02d", obj->year, obj->month, obj->day, obj->hour, obj->minute, obj->second);
+  root["value"] = value;
+  root["state"] = value;
+  if (start_config == DETAIL_ALL) {
+    this->add_sorting_info_(root, obj);
+  }
+
+  return builder.serialize();
 }
 #endif  // USE_DATETIME_DATETIME
 
@@ -1128,22 +1168,25 @@ std::string WebServer::text_all_json_generator(WebServer *web_server, void *sour
   return web_server->text_json((text::Text *) (source), ((text::Text *) (source))->state, DETAIL_ALL);
 }
 std::string WebServer::text_json(text::Text *obj, const std::string &value, JsonDetail start_config) {
-  return json::build_json([this, obj, value, start_config](JsonObject root) {
-    set_json_id(root, obj, "text-" + obj->get_object_id(), start_config);
-    root["min_length"] = obj->traits.get_min_length();
-    root["max_length"] = obj->traits.get_max_length();
-    root["pattern"] = obj->traits.get_pattern();
-    if (obj->traits.get_mode() == text::TextMode::TEXT_MODE_PASSWORD) {
-      root["state"] = "********";
-    } else {
-      root["state"] = value;
-    }
-    root["value"] = value;
-    if (start_config == DETAIL_ALL) {
-      root["mode"] = (int) obj->traits.get_mode();
-      this->add_sorting_info_(root, obj);
-    }
-  });
+  json::JsonBuilder builder;
+  JsonObject root = builder.root();
+
+  set_json_id(root, obj, "text-" + obj->get_object_id(), start_config);
+  root["min_length"] = obj->traits.get_min_length();
+  root["max_length"] = obj->traits.get_max_length();
+  root["pattern"] = obj->traits.get_pattern();
+  if (obj->traits.get_mode() == text::TextMode::TEXT_MODE_PASSWORD) {
+    root["state"] = "********";
+  } else {
+    root["state"] = value;
+  }
+  root["value"] = value;
+  if (start_config == DETAIL_ALL) {
+    root["mode"] = (int) obj->traits.get_mode();
+    this->add_sorting_info_(root, obj);
+  }
+
+  return builder.serialize();
 }
 #endif
 
@@ -1186,16 +1229,19 @@ std::string WebServer::select_all_json_generator(WebServer *web_server, void *so
   return web_server->select_json((select::Select *) (source), ((select::Select *) (source))->state, DETAIL_ALL);
 }
 std::string WebServer::select_json(select::Select *obj, const std::string &value, JsonDetail start_config) {
-  return json::build_json([this, obj, value, start_config](JsonObject root) {
-    set_json_icon_state_value(root, obj, "select-" + obj->get_object_id(), value, value, start_config);
-    if (start_config == DETAIL_ALL) {
-      JsonArray opt = root["option"].to<JsonArray>();
-      for (auto &option : obj->traits.get_options()) {
-        opt.add(option);
-      }
-      this->add_sorting_info_(root, obj);
+  json::JsonBuilder builder;
+  JsonObject root = builder.root();
+
+  set_json_icon_state_value(root, obj, "select-" + obj->get_object_id(), value, value, start_config);
+  if (start_config == DETAIL_ALL) {
+    JsonArray opt = root["option"].to<JsonArray>();
+    for (auto &option : obj->traits.get_options()) {
+      opt.add(option);
     }
-  });
+    this->add_sorting_info_(root, obj);
+  }
+
+  return builder.serialize();
 }
 #endif
 
@@ -1251,91 +1297,93 @@ std::string WebServer::climate_all_json_generator(WebServer *web_server, void *s
 }
 std::string WebServer::climate_json(climate::Climate *obj, JsonDetail start_config) {
   // NOLINTBEGIN(clang-analyzer-cplusplus.NewDeleteLeaks) false positive with ArduinoJson
-  return json::build_json([this, obj, start_config](JsonObject root) {
-    set_json_id(root, obj, "climate-" + obj->get_object_id(), start_config);
-    const auto traits = obj->get_traits();
-    int8_t target_accuracy = traits.get_target_temperature_accuracy_decimals();
-    int8_t current_accuracy = traits.get_current_temperature_accuracy_decimals();
-    char buf[16];
+  json::JsonBuilder builder;
+  JsonObject root = builder.root();
+  set_json_id(root, obj, "climate-" + obj->get_object_id(), start_config);
+  const auto traits = obj->get_traits();
+  int8_t target_accuracy = traits.get_target_temperature_accuracy_decimals();
+  int8_t current_accuracy = traits.get_current_temperature_accuracy_decimals();
+  char buf[16];
 
-    if (start_config == DETAIL_ALL) {
-      JsonArray opt = root["modes"].to<JsonArray>();
-      for (climate::ClimateMode m : traits.get_supported_modes())
-        opt.add(PSTR_LOCAL(climate::climate_mode_to_string(m)));
-      if (!traits.get_supported_custom_fan_modes().empty()) {
-        JsonArray opt = root["fan_modes"].to<JsonArray>();
-        for (climate::ClimateFanMode m : traits.get_supported_fan_modes())
-          opt.add(PSTR_LOCAL(climate::climate_fan_mode_to_string(m)));
-      }
-
-      if (!traits.get_supported_custom_fan_modes().empty()) {
-        JsonArray opt = root["custom_fan_modes"].to<JsonArray>();
-        for (auto const &custom_fan_mode : traits.get_supported_custom_fan_modes())
-          opt.add(custom_fan_mode);
-      }
-      if (traits.get_supports_swing_modes()) {
-        JsonArray opt = root["swing_modes"].to<JsonArray>();
-        for (auto swing_mode : traits.get_supported_swing_modes())
-          opt.add(PSTR_LOCAL(climate::climate_swing_mode_to_string(swing_mode)));
-      }
-      if (traits.get_supports_presets() && obj->preset.has_value()) {
-        JsonArray opt = root["presets"].to<JsonArray>();
-        for (climate::ClimatePreset m : traits.get_supported_presets())
-          opt.add(PSTR_LOCAL(climate::climate_preset_to_string(m)));
-      }
-      if (!traits.get_supported_custom_presets().empty() && obj->custom_preset.has_value()) {
-        JsonArray opt = root["custom_presets"].to<JsonArray>();
-        for (auto const &custom_preset : traits.get_supported_custom_presets())
-          opt.add(custom_preset);
-      }
-      this->add_sorting_info_(root, obj);
+  if (start_config == DETAIL_ALL) {
+    JsonArray opt = root["modes"].to<JsonArray>();
+    for (climate::ClimateMode m : traits.get_supported_modes())
+      opt.add(PSTR_LOCAL(climate::climate_mode_to_string(m)));
+    if (!traits.get_supported_custom_fan_modes().empty()) {
+      JsonArray opt = root["fan_modes"].to<JsonArray>();
+      for (climate::ClimateFanMode m : traits.get_supported_fan_modes())
+        opt.add(PSTR_LOCAL(climate::climate_fan_mode_to_string(m)));
     }
 
-    bool has_state = false;
-    root["mode"] = PSTR_LOCAL(climate_mode_to_string(obj->mode));
-    root["max_temp"] = value_accuracy_to_string(traits.get_visual_max_temperature(), target_accuracy);
-    root["min_temp"] = value_accuracy_to_string(traits.get_visual_min_temperature(), target_accuracy);
-    root["step"] = traits.get_visual_target_temperature_step();
-    if (traits.get_supports_action()) {
-      root["action"] = PSTR_LOCAL(climate_action_to_string(obj->action));
-      root["state"] = root["action"];
-      has_state = true;
-    }
-    if (traits.get_supports_fan_modes() && obj->fan_mode.has_value()) {
-      root["fan_mode"] = PSTR_LOCAL(climate_fan_mode_to_string(obj->fan_mode.value()));
-    }
-    if (!traits.get_supported_custom_fan_modes().empty() && obj->custom_fan_mode.has_value()) {
-      root["custom_fan_mode"] = obj->custom_fan_mode.value().c_str();
-    }
-    if (traits.get_supports_presets() && obj->preset.has_value()) {
-      root["preset"] = PSTR_LOCAL(climate_preset_to_string(obj->preset.value()));
-    }
-    if (!traits.get_supported_custom_presets().empty() && obj->custom_preset.has_value()) {
-      root["custom_preset"] = obj->custom_preset.value().c_str();
+    if (!traits.get_supported_custom_fan_modes().empty()) {
+      JsonArray opt = root["custom_fan_modes"].to<JsonArray>();
+      for (auto const &custom_fan_mode : traits.get_supported_custom_fan_modes())
+        opt.add(custom_fan_mode);
     }
     if (traits.get_supports_swing_modes()) {
-      root["swing_mode"] = PSTR_LOCAL(climate_swing_mode_to_string(obj->swing_mode));
+      JsonArray opt = root["swing_modes"].to<JsonArray>();
+      for (auto swing_mode : traits.get_supported_swing_modes())
+        opt.add(PSTR_LOCAL(climate::climate_swing_mode_to_string(swing_mode)));
     }
-    if (traits.get_supports_current_temperature()) {
-      if (!std::isnan(obj->current_temperature)) {
-        root["current_temperature"] = value_accuracy_to_string(obj->current_temperature, current_accuracy);
-      } else {
-        root["current_temperature"] = "NA";
-      }
+    if (traits.get_supports_presets() && obj->preset.has_value()) {
+      JsonArray opt = root["presets"].to<JsonArray>();
+      for (climate::ClimatePreset m : traits.get_supported_presets())
+        opt.add(PSTR_LOCAL(climate::climate_preset_to_string(m)));
     }
-    if (traits.get_supports_two_point_target_temperature()) {
-      root["target_temperature_low"] = value_accuracy_to_string(obj->target_temperature_low, target_accuracy);
-      root["target_temperature_high"] = value_accuracy_to_string(obj->target_temperature_high, target_accuracy);
-      if (!has_state) {
-        root["state"] = value_accuracy_to_string((obj->target_temperature_high + obj->target_temperature_low) / 2.0f,
-                                                 target_accuracy);
-      }
+    if (!traits.get_supported_custom_presets().empty() && obj->custom_preset.has_value()) {
+      JsonArray opt = root["custom_presets"].to<JsonArray>();
+      for (auto const &custom_preset : traits.get_supported_custom_presets())
+        opt.add(custom_preset);
+    }
+    this->add_sorting_info_(root, obj);
+  }
+
+  bool has_state = false;
+  root["mode"] = PSTR_LOCAL(climate_mode_to_string(obj->mode));
+  root["max_temp"] = value_accuracy_to_string(traits.get_visual_max_temperature(), target_accuracy);
+  root["min_temp"] = value_accuracy_to_string(traits.get_visual_min_temperature(), target_accuracy);
+  root["step"] = traits.get_visual_target_temperature_step();
+  if (traits.get_supports_action()) {
+    root["action"] = PSTR_LOCAL(climate_action_to_string(obj->action));
+    root["state"] = root["action"];
+    has_state = true;
+  }
+  if (traits.get_supports_fan_modes() && obj->fan_mode.has_value()) {
+    root["fan_mode"] = PSTR_LOCAL(climate_fan_mode_to_string(obj->fan_mode.value()));
+  }
+  if (!traits.get_supported_custom_fan_modes().empty() && obj->custom_fan_mode.has_value()) {
+    root["custom_fan_mode"] = obj->custom_fan_mode.value().c_str();
+  }
+  if (traits.get_supports_presets() && obj->preset.has_value()) {
+    root["preset"] = PSTR_LOCAL(climate_preset_to_string(obj->preset.value()));
+  }
+  if (!traits.get_supported_custom_presets().empty() && obj->custom_preset.has_value()) {
+    root["custom_preset"] = obj->custom_preset.value().c_str();
+  }
+  if (traits.get_supports_swing_modes()) {
+    root["swing_mode"] = PSTR_LOCAL(climate_swing_mode_to_string(obj->swing_mode));
+  }
+  if (traits.get_supports_current_temperature()) {
+    if (!std::isnan(obj->current_temperature)) {
+      root["current_temperature"] = value_accuracy_to_string(obj->current_temperature, current_accuracy);
     } else {
-      root["target_temperature"] = value_accuracy_to_string(obj->target_temperature, target_accuracy);
-      if (!has_state)
-        root["state"] = root["target_temperature"];
+      root["current_temperature"] = "NA";
     }
-  });
+  }
+  if (traits.get_supports_two_point_target_temperature()) {
+    root["target_temperature_low"] = value_accuracy_to_string(obj->target_temperature_low, target_accuracy);
+    root["target_temperature_high"] = value_accuracy_to_string(obj->target_temperature_high, target_accuracy);
+    if (!has_state) {
+      root["state"] = value_accuracy_to_string((obj->target_temperature_high + obj->target_temperature_low) / 2.0f,
+                                               target_accuracy);
+    }
+  } else {
+    root["target_temperature"] = value_accuracy_to_string(obj->target_temperature, target_accuracy);
+    if (!has_state)
+      root["state"] = root["target_temperature"];
+  }
+
+  return builder.serialize();
   // NOLINTEND(clang-analyzer-cplusplus.NewDeleteLeaks)
 }
 #endif
@@ -1401,13 +1449,16 @@ std::string WebServer::lock_all_json_generator(WebServer *web_server, void *sour
   return web_server->lock_json((lock::Lock *) (source), ((lock::Lock *) (source))->state, DETAIL_ALL);
 }
 std::string WebServer::lock_json(lock::Lock *obj, lock::LockState value, JsonDetail start_config) {
-  return json::build_json([this, obj, value, start_config](JsonObject root) {
-    set_json_icon_state_value(root, obj, "lock-" + obj->get_object_id(), lock::lock_state_to_string(value), value,
-                              start_config);
-    if (start_config == DETAIL_ALL) {
-      this->add_sorting_info_(root, obj);
-    }
-  });
+  json::JsonBuilder builder;
+  JsonObject root = builder.root();
+
+  set_json_icon_state_value(root, obj, "lock-" + obj->get_object_id(), lock::lock_state_to_string(value), value,
+                            start_config);
+  if (start_config == DETAIL_ALL) {
+    this->add_sorting_info_(root, obj);
+  }
+
+  return builder.serialize();
 }
 #endif
 
@@ -1464,17 +1515,20 @@ std::string WebServer::valve_all_json_generator(WebServer *web_server, void *sou
   return web_server->valve_json((valve::Valve *) (source), DETAIL_ALL);
 }
 std::string WebServer::valve_json(valve::Valve *obj, JsonDetail start_config) {
-  return json::build_json([this, obj, start_config](JsonObject root) {
-    set_json_icon_state_value(root, obj, "valve-" + obj->get_object_id(), obj->is_fully_closed() ? "CLOSED" : "OPEN",
-                              obj->position, start_config);
-    root["current_operation"] = valve::valve_operation_to_str(obj->current_operation);
+  json::JsonBuilder builder;
+  JsonObject root = builder.root();
 
-    if (obj->get_traits().get_supports_position())
-      root["position"] = obj->position;
-    if (start_config == DETAIL_ALL) {
-      this->add_sorting_info_(root, obj);
-    }
-  });
+  set_json_icon_state_value(root, obj, "valve-" + obj->get_object_id(), obj->is_fully_closed() ? "CLOSED" : "OPEN",
+                            obj->position, start_config);
+  root["current_operation"] = valve::valve_operation_to_str(obj->current_operation);
+
+  if (obj->get_traits().get_supports_position())
+    root["position"] = obj->position;
+  if (start_config == DETAIL_ALL) {
+    this->add_sorting_info_(root, obj);
+  }
+
+  return builder.serialize();
 }
 #endif
 
@@ -1533,14 +1587,17 @@ std::string WebServer::alarm_control_panel_all_json_generator(WebServer *web_ser
 std::string WebServer::alarm_control_panel_json(alarm_control_panel::AlarmControlPanel *obj,
                                                 alarm_control_panel::AlarmControlPanelState value,
                                                 JsonDetail start_config) {
-  return json::build_json([this, obj, value, start_config](JsonObject root) {
-    char buf[16];
-    set_json_icon_state_value(root, obj, "alarm-control-panel-" + obj->get_object_id(),
-                              PSTR_LOCAL(alarm_control_panel_state_to_string(value)), value, start_config);
-    if (start_config == DETAIL_ALL) {
-      this->add_sorting_info_(root, obj);
-    }
-  });
+  json::JsonBuilder builder;
+  JsonObject root = builder.root();
+
+  char buf[16];
+  set_json_icon_state_value(root, obj, "alarm-control-panel-" + obj->get_object_id(),
+                            PSTR_LOCAL(alarm_control_panel_state_to_string(value)), value, start_config);
+  if (start_config == DETAIL_ALL) {
+    this->add_sorting_info_(root, obj);
+  }
+
+  return builder.serialize();
 }
 #endif
 
@@ -1577,20 +1634,23 @@ std::string WebServer::event_all_json_generator(WebServer *web_server, void *sou
   return web_server->event_json(event, get_event_type(event), DETAIL_ALL);
 }
 std::string WebServer::event_json(event::Event *obj, const std::string &event_type, JsonDetail start_config) {
-  return json::build_json([this, obj, event_type, start_config](JsonObject root) {
-    set_json_id(root, obj, "event-" + obj->get_object_id(), start_config);
-    if (!event_type.empty()) {
-      root["event_type"] = event_type;
+  json::JsonBuilder builder;
+  JsonObject root = builder.root();
+
+  set_json_id(root, obj, "event-" + obj->get_object_id(), start_config);
+  if (!event_type.empty()) {
+    root["event_type"] = event_type;
+  }
+  if (start_config == DETAIL_ALL) {
+    JsonArray event_types = root["event_types"].to<JsonArray>();
+    for (auto const &event_type : obj->get_event_types()) {
+      event_types.add(event_type);
     }
-    if (start_config == DETAIL_ALL) {
-      JsonArray event_types = root["event_types"].to<JsonArray>();
-      for (auto const &event_type : obj->get_event_types()) {
-        event_types.add(event_type);
-      }
-      root["device_class"] = obj->get_device_class();
-      this->add_sorting_info_(root, obj);
-    }
-  });
+    root["device_class"] = obj->get_device_class();
+    this->add_sorting_info_(root, obj);
+  }
+
+  return builder.serialize();
 }
 #endif
 
@@ -1644,18 +1704,21 @@ std::string WebServer::update_all_json_generator(WebServer *web_server, void *so
 }
 std::string WebServer::update_json(update::UpdateEntity *obj, JsonDetail start_config) {
   // NOLINTBEGIN(clang-analyzer-cplusplus.NewDeleteLeaks) false positive with ArduinoJson
-  return json::build_json([this, obj, start_config](JsonObject root) {
-    set_json_id(root, obj, "update-" + obj->get_object_id(), start_config);
-    root["value"] = obj->update_info.latest_version;
-    root["state"] = update_state_to_string(obj->state);
-    if (start_config == DETAIL_ALL) {
-      root["current_version"] = obj->update_info.current_version;
-      root["title"] = obj->update_info.title;
-      root["summary"] = obj->update_info.summary;
-      root["release_url"] = obj->update_info.release_url;
-      this->add_sorting_info_(root, obj);
-    }
-  });
+  json::JsonBuilder builder;
+  JsonObject root = builder.root();
+
+  set_json_id(root, obj, "update-" + obj->get_object_id(), start_config);
+  root["value"] = obj->update_info.latest_version;
+  root["state"] = update_state_to_string(obj->state);
+  if (start_config == DETAIL_ALL) {
+    root["current_version"] = obj->update_info.current_version;
+    root["title"] = obj->update_info.title;
+    root["summary"] = obj->update_info.summary;
+    root["release_url"] = obj->update_info.release_url;
+    this->add_sorting_info_(root, obj);
+  }
+
+  return builder.serialize();
   // NOLINTEND(clang-analyzer-cplusplus.NewDeleteLeaks)
 }
 #endif

esphome/components/web_server_idf/web_server_idf.cpp

@@ -392,10 +392,11 @@ AsyncEventSourceResponse::AsyncEventSourceResponse(const AsyncWebServerRequest *
 #ifdef USE_WEBSERVER_SORTING
   for (auto &group : ws->sorting_groups_) {
     // NOLINTBEGIN(clang-analyzer-cplusplus.NewDeleteLeaks) false positive with ArduinoJson
-    message = json::build_json([group](JsonObject root) {
-      root["name"] = group.second.name;
-      root["sorting_weight"] = group.second.weight;
-    });
+    json::JsonBuilder builder;
+    JsonObject root = builder.root();
+    root["name"] = group.second.name;
+    root["sorting_weight"] = group.second.weight;
+    message = builder.serialize();
     // NOLINTEND(clang-analyzer-cplusplus.NewDeleteLeaks)
 
     // a (very) large number of these should be able to be queued initially without defer