From 7d16824fda7086fbeb0a1deae3fc0abdf0c4832d Mon Sep 17 00:00:00 2001
From: John Firebaugh <john.firebaugh@gmail.com>
Date: Wed, 30 Nov 2016 10:17:47 -0800
Subject: [core] Functions must have at least one stop

This is already enforced by the style validator in mapbox-gl-style-spec. Enforce it here too.
---
 include/mbgl/style/function.hpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

(limited to 'include/mbgl/style/function.hpp')

diff --git a/include/mbgl/style/function.hpp b/include/mbgl/style/function.hpp
index 97e880b280..3aefba6600 100644
--- a/include/mbgl/style/function.hpp
+++ b/include/mbgl/style/function.hpp
@@ -12,8 +12,10 @@ public:
     using Stop = std::pair<float, T>;
     using Stops = std::vector<Stop>;
 
-    explicit Function(Stops stops_, float base_)
-        : base(base_), stops(std::move(stops_)) {}
+    Function(Stops stops_, float base_)
+        : base(base_), stops(std::move(stops_)) {
+        assert(stops.size() > 0);
+    }
 
     float getBase() const { return base; }
     const std::vector<std::pair<float, T>>& getStops() const { return stops; }
-- 
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