1 files changed, 80 insertions, 0 deletions
diff --git a/dynvars-impl.hpp b/dynvars-impl.hpp
new file mode 100644
index 0000000..5890888
--- /dev/null
+++ b/dynvars-impl.hpp
@@ -0,0 +1,80 @@
+// Copyright 2012, Matthias Andreas Benkard.
+
+#pragma once
+
+#ifndef DYNVARS_IMPL_HPP
+#define DYNVARS_IMPL_HPP
+
+#include <cstdlib>
+#include <cstdio>
+#include <iostream>
+#include <functional>
+#include <memory>
+#include <future>
+#include <list>
+
+#include "dynvars.hpp"
+
+namespace dynvars {
+
+using namespace ::std;
+
+template <typename T>
+dynvar<T>::dynvar(T val) {
+  this->push(val);
+}
+
+template <typename T>
+dynvar<T>& dynvar<T>::operator =(T val) {
+  if (!value_stack.empty()) {
+    this->pop();
+  }
+  this->push(val);
+  return *this;
+}
+
+template <typename T>
+void dynvar<T>::push(T val) {
+  value_stack.push_front(val);
+}
+
+template <typename T>
+void dynvar<T>::pop() {
+  value_stack.pop_front();
+}
+
+template <typename T>
+dynvar<T>::operator bool() const {
+  return !value_stack.empty();
+}
+
+template <typename T>
+T& dynvar<T>::operator *() {
+  return value_stack.front();
+}
+
+template <typename T>
+T* dynvar<T>::operator ->() {
+  return &value_stack.front();
+}
+
+template <typename R>
+dyn<R>::dyn(dynvar<R>& var, R val) : myvar(var) {
+  myvar.push(val);
+}
+
+template <typename R>
+dyn<R>::~dyn() {
+  myvar.pop();
+}
+
+template <typename R, typename T>
+T
+with(dynvar<R>& var, R val, function<T ()> f) {
+  dyn<R> d_(var, val);
+  return f();
+}
+
+}
+
+#endif //DYNVARS_IMPL_HPP