From 70150fd8f9e7dec0b67d4b8dc227d8ac68a273b8 Mon Sep 17 00:00:00 2001
From: john30 <ebusd@ebusd.eu>
Date: Sun, 23 Apr 2017 11:56:53 +0200
Subject: [PATCH] added const[] accessor

---
 src/lib/ebus/symbol.h | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/src/lib/ebus/symbol.h b/src/lib/ebus/symbol.h
index f414da66..0c88e31d 100644
--- a/src/lib/ebus/symbol.h
+++ b/src/lib/ebus/symbol.h
@@ -170,6 +170,18 @@ class SymbolString {
     return m_data[index];
   }
 
+  /**
+   * Return a reference to the symbol at the specified index.
+   * @param index the index of the symbol to return.
+   * @return the reference to the symbol at the specified index, or SYN if not available.
+   */
+  symbol_t operator[](const size_t index) const {
+    if (index >= m_data.size()) {
+      return SYN;
+    }
+    return m_data[index];
+  }
+
   /**
    * Return whether this instance is equal to the other instance.
    * @param other the other instance.