From 571d654e67896d10ea760ca62c092ae239bc3262 Mon Sep 17 00:00:00 2001
From: bubnikv <bubnikv@gmail.com>
Date: Sun, 26 Nov 2017 11:52:44 +0100
Subject: [PATCH] Placeholder parser - added a comment with a reference to a C
 grammar.

---
 xs/src/libslic3r/PlaceholderParser.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/xs/src/libslic3r/PlaceholderParser.cpp b/xs/src/libslic3r/PlaceholderParser.cpp
index 39d775e89..ace63a4b5 100644
--- a/xs/src/libslic3r/PlaceholderParser.cpp
+++ b/xs/src/libslic3r/PlaceholderParser.cpp
@@ -588,6 +588,7 @@ namespace client
     ///////////////////////////////////////////////////////////////////////////
     //  Our calculator grammar
     ///////////////////////////////////////////////////////////////////////////
+    // Inspired by the C grammar https://www.lysator.liu.se/c/ANSI-C-grammar-y.html
     template <typename Iterator>
     struct calculator : qi::grammar<Iterator, std::string(const MyContext*), spirit::ascii::space_type>
     {