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{ "id": 25750, "url": "https://patchwork.libcamera.org/api/1.1/patches/25750/?format=api", "web_url": "https://patchwork.libcamera.org/patch/25750/", "project": { "id": 1, "url": "https://patchwork.libcamera.org/api/1.1/projects/1/?format=api", "name": "libcamera", "link_name": "libcamera", "list_id": "libcamera_core", "list_email": "libcamera-devel@lists.libcamera.org", "web_url": "", "scm_url": "", "webscm_url": "" }, "msgid": "<20260113000808.15395-31-laurent.pinchart@ideasonboard.com>", "date": "2026-01-13T00:08:02", "name": "[30/36] libcamera: value_node: Support looking up nested children in one operation", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "2406f5d30bfece8180b3b81343127f8822ac7360", "submitter": { "id": 2, "url": "https://patchwork.libcamera.org/api/1.1/people/2/?format=api", "name": "Laurent Pinchart", "email": "laurent.pinchart@ideasonboard.com" }, "delegate": null, "mbox": "https://patchwork.libcamera.org/patch/25750/mbox/", "series": [ { "id": 5703, "url": "https://patchwork.libcamera.org/api/1.1/series/5703/?format=api", "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=5703", "date": "2026-01-13T00:07:32", "name": "libcamera: Global configuration file improvements", "version": 1, "mbox": "https://patchwork.libcamera.org/series/5703/mbox/" } ], "comments": "https://patchwork.libcamera.org/api/patches/25750/comments/", "check": "pending", "checks": "https://patchwork.libcamera.org/api/patches/25750/checks/", "tags": {}, "headers": { "Return-Path": "<libcamera-devel-bounces@lists.libcamera.org>", "X-Original-To": "parsemail@patchwork.libcamera.org", "Delivered-To": "parsemail@patchwork.libcamera.org", "Received": [ "from lancelot.ideasonboard.com (lancelot.ideasonboard.com\n\t[92.243.16.209])\n\tby patchwork.libcamera.org (Postfix) with ESMTPS id 5610BC32AF\n\tfor <parsemail@patchwork.libcamera.org>;\n\tTue, 13 Jan 2026 00:09:21 +0000 (UTC)", "from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id E2E4762013;\n\tTue, 13 Jan 2026 01:09:20 +0100 (CET)", "from perceval.ideasonboard.com (perceval.ideasonboard.com\n\t[IPv6:2001:4b98:dc2:55:216:3eff:fef7:d647])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id CC00561FF4\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tTue, 13 Jan 2026 01:09:18 +0100 (CET)", "from pendragon.ideasonboard.com (81-175-209-152.bb.dnainternet.fi\n\t[81.175.209.152])\n\tby perceval.ideasonboard.com (Postfix) with UTF8SMTPSA id 2FE73BCA\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tTue, 13 Jan 2026 01:08:53 +0100 (CET)" ], "Authentication-Results": "lancelot.ideasonboard.com; dkim=pass (1024-bit key;\n\tunprotected) header.d=ideasonboard.com header.i=@ideasonboard.com\n\theader.b=\"N4h9ifE9\"; dkim-atps=neutral", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com;\n\ts=mail; t=1768262933;\n\tbh=swlUtzW82ngKAGHFFUN5/TSMXj/Bxv99B2kP9bfB6Bc=;\n\th=From:To:Subject:Date:In-Reply-To:References:From;\n\tb=N4h9ifE9ssQ79ggYRQbWYozyLs/TB+ivjdEJuYaq3kAbvAJ18gSFOE2zsal1renRT\n\tqX75JYZTqD8rGFzayGAwiZJlJj/+gRgN5yjGGq+7c6eRvii/Jxk5Yd9kLTv2b0/DEH\n\t3i0C8W/2kg+kEwqVfeIWY0vUMJi3we/O0MQpwdWo=", "From": "Laurent Pinchart <laurent.pinchart@ideasonboard.com>", "To": "libcamera-devel@lists.libcamera.org", "Subject": "[PATCH 30/36] libcamera: value_node: Support looking up nested\n\tchildren in one operation", "Date": "Tue, 13 Jan 2026 02:08:02 +0200", "Message-ID": "<20260113000808.15395-31-laurent.pinchart@ideasonboard.com>", "X-Mailer": "git-send-email 2.51.2", "In-Reply-To": "<20260113000808.15395-1-laurent.pinchart@ideasonboard.com>", "References": "<20260113000808.15395-1-laurent.pinchart@ideasonboard.com>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "X-BeenThere": "libcamera-devel@lists.libcamera.org", "X-Mailman-Version": "2.1.29", "Precedence": "list", "List-Id": "<libcamera-devel.lists.libcamera.org>", "List-Unsubscribe": "<https://lists.libcamera.org/options/libcamera-devel>,\n\t<mailto:libcamera-devel-request@lists.libcamera.org?subject=unsubscribe>", "List-Archive": "<https://lists.libcamera.org/pipermail/libcamera-devel/>", "List-Post": "<mailto:libcamera-devel@lists.libcamera.org>", "List-Help": "<mailto:libcamera-devel-request@lists.libcamera.org?subject=help>", "List-Subscribe": "<https://lists.libcamera.org/listinfo/libcamera-devel>,\n\t<mailto:libcamera-devel-request@lists.libcamera.org?subject=subscribe>", "Errors-To": "libcamera-devel-bounces@lists.libcamera.org", "Sender": "\"libcamera-devel\" <libcamera-devel-bounces@lists.libcamera.org>" }, "content": "Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>\n---\n include/libcamera/internal/value_node.h | 1 +\n src/libcamera/value_node.cpp | 23 +++++++++++++++++++++++\n 2 files changed, 24 insertions(+)", "diff": "diff --git a/include/libcamera/internal/value_node.h b/include/libcamera/internal/value_node.h\nindex abb0991fd87e..da72651d2161 100644\n--- a/include/libcamera/internal/value_node.h\n+++ b/include/libcamera/internal/value_node.h\n@@ -235,6 +235,7 @@ public:\n \tbool contains(std::string_view key) const;\n \tValueNode *at(std::string_view key);\n \tconst ValueNode &operator[](std::string_view key) const;\n+\tconst ValueNode &operator[](std::initializer_list<std::string_view> path) const;\n \n \tValueNode *add(std::unique_ptr<ValueNode> child);\n \tValueNode *add(std::string key, std::unique_ptr<ValueNode> child);\ndiff --git a/src/libcamera/value_node.cpp b/src/libcamera/value_node.cpp\nindex 1256adf8361d..55d5a1a29991 100644\n--- a/src/libcamera/value_node.cpp\n+++ b/src/libcamera/value_node.cpp\n@@ -487,6 +487,29 @@ const ValueNode &ValueNode::operator[](std::string_view key) const\n \treturn *iter->second;\n }\n \n+/**\n+ * \\brief Retrieve a descendant node by path\n+ * \\param[in] path The path\n+ *\n+ * This function retrieves a descendant of a ValueNode by following a \\a path.\n+ * The path is a list of keys that index nested dictionary nodes. If any node\n+ * along the path is not a Dictionary node, an empty node is returned.\n+ *\n+ * \\return The ValueNode corresponding to the \\a path\n+ */\n+const ValueNode &ValueNode::operator[](std::initializer_list<std::string_view> path) const\n+{\n+\tconst ValueNode *node = this;\n+\n+\tfor (const auto part : path) {\n+\t\tnode = &(*node)[part];\n+\t\tif (!*node)\n+\t\t\treturn empty;\n+\t}\n+\n+\treturn *node;\n+}\n+\n /**\n * \\brief Add a child node to a list\n * \\param[in] child The child node\n", "prefixes": [ "30/36" ] }