From d923aa73c3c76a0f1943a8cf4ed96197e7d20c77 Mon Sep 17 00:00:00 2001
From: Markus Mittendrein <git@maxmitti.tk>
Date: Mon, 28 Sep 2015 15:38:30 +0200
Subject: use SFINAE for integer CRSMConfigValue-specialization instead of
 hard- coded int and throw an exception when the value is out of range.

---
 src/CRSMConfig.hpp | 17 ++++++++++-------
 1 file changed, 10 insertions(+), 7 deletions(-)

diff --git a/src/CRSMConfig.hpp b/src/CRSMConfig.hpp
index b875d6f..b705c62 100644
--- a/src/CRSMConfig.hpp
+++ b/src/CRSMConfig.hpp
@@ -6,6 +6,8 @@
 #include <QMap>
 
 #include <exception>
+#include <type_traits>
+#include <limits>
 
 using CRSMConfigException = std::logic_error;
 
@@ -36,7 +38,7 @@ public:
     static QString getStringValue(Type val);
 };
 
-template<typename Type>
+template<typename Type, typename = void>
 class CRSMConfigValue : public CRSMConfigValueBase {
 public:
 //    CRSMConfigValue(Type&) {  }
@@ -66,19 +68,20 @@ public:
     virtual CRSMConfigValueType::Type type() { return CRSMConfigValueType::Type::String; }
 };
 
-template<>
-class CRSMConfigValue<Integer> : public CRSMConfigValueBase {
-    Integer& config;
+template<typename Type>
+class CRSMConfigValue<Type, typename std::enable_if<std::is_integral<Type>::value>::type> : public CRSMConfigValueBase {
+    Type& config;
 
 public:
-    CRSMConfigValue(Integer& config) : config(config) {  }
+    CRSMConfigValue(Type& config) : config(config) {  }
 
     virtual void setValue(const QString& value)
     {
         bool ok = true;
-        Integer val = value.toInt(&ok, 0);
+        long long longLongVal = value.toLongLong(&ok, 0);
         if(!ok) throw CRSMConfigException("\"" + value.toStdString() + "\" could not be parsed as an Integer");
-        config = val;
+        if(longLongVal < std::numeric_limits<Type>::min() || longLongVal > std::numeric_limits<Type>::max()) throw CRSMConfigException((QString::number(longLongVal) + " is out of range (" + QString::number(std::numeric_limits<Type>::min()) + " - " + QString::number(std::numeric_limits<Type>::max()) + ")").toStdString());
+        config = static_cast<Type>(longLongVal);
     }
     virtual QString value() { return QString::number(config); }
     virtual CRSMConfigValueType::Type type() { return CRSMConfigValueType::Type::Integer; }
-- 
cgit v1.2.3-54-g00ecf