From 81c3224076da6ad727debc6bab8a5422f7322451 Mon Sep 17 00:00:00 2001
From: Max Kellermann <max@duempel.org>
Date: Sun, 4 Aug 2013 12:25:08 +0200
Subject: OutputPlugin: pass config_param reference

---
 src/ConfigData.hxx | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'src/ConfigData.hxx')

diff --git a/src/ConfigData.hxx b/src/ConfigData.hxx
index 5e13d073c..d6b024b9b 100644
--- a/src/ConfigData.hxx
+++ b/src/ConfigData.hxx
@@ -80,6 +80,15 @@ struct config_param {
 
 	config_param &operator=(const config_param &) = delete;
 
+	/**
+	 * Determine if this is a "null" instance, i.e. an empty
+	 * object that was synthesized and not loaded from a
+	 * configuration file.
+	 */
+	bool IsNull() const {
+		return line == unsigned(-1);
+	}
+
 	gcc_nonnull_all
 	void AddBlockParam(const char *_name, const char *_value,
 			   int _line=-1) {
-- 
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