From 105e708d4229144e0bc9331c149fc2bc260e0f13 Mon Sep 17 00:00:00 2001
From: Daniel Sipka <no1msd@gmail.com>
Date: Wed, 29 Apr 2015 10:53:01 +0200
Subject: [PATCH] double value support

---
 include/mstch/mstch.hpp       | 2 +-
 src/visitor/is_node_empty.hpp | 5 +++++
 src/visitor/render_node.hpp   | 8 ++++++++
 test/data/dot_notation.hpp    | 2 +-
 test/data/partial_view.hpp    | 3 ++-
 test/data/simple.hpp          | 2 +-
 6 files changed, 18 insertions(+), 4 deletions(-)

diff --git a/include/mstch/mstch.hpp b/include/mstch/mstch.hpp
index c35b5ac..f9b42d4 100644
--- a/include/mstch/mstch.hpp
+++ b/include/mstch/mstch.hpp
@@ -84,7 +84,7 @@ class lambda {
 };
 
 using node = boost::make_recursive_variant<
-    std::nullptr_t, std::string, int, bool, lambda,
+    std::nullptr_t, std::string, int, double, bool, lambda,
     std::shared_ptr<internal::object_t<boost::recursive_variant_>>,
     std::map<const std::string, boost::recursive_variant_>,
     std::vector<boost::recursive_variant_>>::type;
diff --git a/src/visitor/is_node_empty.hpp b/src/visitor/is_node_empty.hpp
index 25b3c69..43b0756 100644
--- a/src/visitor/is_node_empty.hpp
+++ b/src/visitor/is_node_empty.hpp
@@ -24,6 +24,11 @@ inline bool is_node_empty::operator()(const int& value) const {
   return value == 0;
 }
 
+template<>
+inline bool is_node_empty::operator()(const double& value) const {
+  return value == 0;
+}
+
 template<>
 inline bool is_node_empty::operator()(const bool& value) const {
   return !value;
diff --git a/src/visitor/render_node.hpp b/src/visitor/render_node.hpp
index aefd22f..bc494c3 100644
--- a/src/visitor/render_node.hpp
+++ b/src/visitor/render_node.hpp
@@ -1,5 +1,6 @@
 #pragma once
 
+#include <sstream>
 #include <boost/variant/static_visitor.hpp>
 
 #include "mstch/mstch.hpp"
@@ -27,6 +28,13 @@ inline std::string render_node::operator()(const int& value) const {
   return std::to_string(value);
 }
 
+template<>
+inline std::string render_node::operator()(const double& value) const {
+  std::stringstream ss;
+  ss << value;
+  return ss.str();
+}
+
 template<>
 inline std::string render_node::operator()(const bool& value) const {
   return value?"true":"false";
diff --git a/test/data/dot_notation.hpp b/test/data/dot_notation.hpp
index d21ee50..9a6574d 100644
--- a/test/data/dot_notation.hpp
+++ b/test/data/dot_notation.hpp
@@ -17,7 +17,7 @@ public:
   }
 
   mstch::node vat() {
-    return static_cast<int>(m_value * 0.2);
+    return m_value * 0.2;
   }
 
   mstch::node currency() {
diff --git a/test/data/partial_view.hpp b/test/data/partial_view.hpp
index b6341ef..09869a8 100644
--- a/test/data/partial_view.hpp
+++ b/test/data/partial_view.hpp
@@ -1,6 +1,7 @@
 class partial_view: public mstch::object {
 private:
   int m_value;
+
 public:
     partial_view(): m_value{10000} {
     register_methods(this, {
@@ -30,7 +31,7 @@ public:
   }
 
   mstch::node taxed_value() {
-    return static_cast<int>(m_value - (m_value * 0.4));
+    return m_value - (m_value * 0.4);
   }
 
   mstch::node in_ca() {
diff --git a/test/data/simple.hpp b/test/data/simple.hpp
index e7e6088..a2a64c3 100644
--- a/test/data/simple.hpp
+++ b/test/data/simple.hpp
@@ -21,7 +21,7 @@ public:
   }
 
   mstch::node taxed_value() {
-    return static_cast<int>(m_value - (m_value * 0.4));
+    return m_value - (m_value * 0.4);
   }
 
   mstch::node in_ca() {