From 5d7252681da3b26845fc4e5dcf0b0e94ed9fabb1 Mon Sep 17 00:00:00 2001
From: Carlo Zancanaro <carlo@carlo-laptop>
Date: Fri, 6 Apr 2012 14:02:26 +1000
Subject: Move everything into impl/ and add a Makefile.

---
 impl/Max.h | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 impl/Max.h

(limited to 'impl/Max.h')

diff --git a/impl/Max.h b/impl/Max.h
new file mode 100644
index 0000000..b3b5d65
--- /dev/null
+++ b/impl/Max.h
@@ -0,0 +1,22 @@
+#ifndef MAX_H
+#define MAX_H
+
+#include "Expression.h"
+
+template<class T>
+struct Max : public Expression<T> {
+  Max(Expression<T>* left, Expression<T>* right)
+    : _left(left), _right(right) { }
+
+  T eval(const std::map<std::string, T>& mappings) const {
+    T left = _left->eval(mappings);
+    T right = _right->eval(mappings);
+    return left < right ? right : left;
+  }
+  
+  private:
+  Expression<T>* _left;
+  Expression<T>* _right;
+};
+
+#endif
-- 
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