Merge branch 'master' of github.com:simgrid/simgrid

[simgrid.git] / include / xbt / config.hpp

diff --git a/include/xbt/config.hpp b/include/xbt/config.hpp
index 6e7a118..236d87f 100644 (file)
--- a/include/xbt/config.hpp
+++ b/include/xbt/config.hpp
@@ -1,11 +1,10 @@
-/* Copyright (c) 2016. The SimGrid Team.
- * All rights reserved.                                                     */
+/* Copyright (c) 2016-2018. The SimGrid Team. All rights reserved.          */
 
 /* This program is free software; you can redistribute it and/or modify it
  * under the terms of the license (GNU LGPL) which comes with this package. */
 
-#ifndef _XBT_CONFIG_HPP_
-#define _XBT_CONFIG_HPP_
+#ifndef XBT_CONFIG_HPP
+#define XBT_CONFIG_HPP
 
 #include <xbt/base.h>
 
@@ -24,13 +23,13 @@
 namespace simgrid {
 namespace config {
 
-XBT_PUBLIC_CLASS missing_key_error : public std::runtime_error {
+class XBT_PUBLIC missing_key_error : public std::runtime_error {
 public:
   explicit missing_key_error(const std::string& what)
     : std::runtime_error(what) {}
   explicit missing_key_error(const char* what)
     : std::runtime_error(what) {}
-  ~missing_key_error() noexcept override;
+  ~missing_key_error() override;
 };
 
 template<class T> inline
@@ -53,13 +52,12 @@ inline std::string to_string(std::string&& value)
 
 // Get config
 
-template<class T>
-XBT_PUBLIC(T const&) getConfig(const char* name);
+template <class T> XBT_PUBLIC T const& getConfig(const char* name);
 
-extern template XBT_PUBLIC(int const&) getConfig<int>(const char* name);
-extern template XBT_PUBLIC(double const&) getConfig<double>(const char* name);
-extern template XBT_PUBLIC(bool const&) getConfig<bool>(const char* name);
-extern template XBT_PUBLIC(std::string const&) getConfig<std::string>(const char* name);
+extern template XBT_PUBLIC int const& getConfig<int>(const char* name);
+extern template XBT_PUBLIC double const& getConfig<double>(const char* name);
+extern template XBT_PUBLIC bool const& getConfig<bool>(const char* name);
+extern template XBT_PUBLIC std::string const& getConfig<std::string>(const char* name);
 
 // Register:
 
@@ -70,22 +68,22 @@ extern template XBT_PUBLIC(std::string const&) getConfig<std::string>(const char
  *  @param value       Initial/default value
  *  @param callback    called with the option value
  */
-template<class T>
-XBT_PUBLIC(void) declareFlag(const char* name, const char* description,
-  T value, std::function<void(const T&)> callback = std::function<void(const T&)>());
-
-extern template XBT_PUBLIC(void) declareFlag(const char* name,
-  const char* description, int value, std::function<void(int const &)> callback);
-extern template XBT_PUBLIC(void) declareFlag(const char* name,
-  const char* description, double value, std::function<void(double const &)> callback);
-extern template XBT_PUBLIC(void) declareFlag(const char* name,
-  const char* description, bool value, std::function<void(bool const &)> callback);
-extern template XBT_PUBLIC(void) declareFlag(const char* name,
-  const char* description, std::string value, std::function<void(std::string const &)> callback);
+template <class T>
+XBT_PUBLIC void declareFlag(const char* name, const char* description, T value,
+                            std::function<void(const T&)> callback = std::function<void(const T&)>());
+
+extern template XBT_PUBLIC void declareFlag(const char* name, const char* description, int value,
+                                            std::function<void(int const&)> callback);
+extern template XBT_PUBLIC void declareFlag(const char* name, const char* description, double value,
+                                            std::function<void(double const&)> callback);
+extern template XBT_PUBLIC void declareFlag(const char* name, const char* description, bool value,
+                                            std::function<void(bool const&)> callback);
+extern template XBT_PUBLIC void declareFlag(const char* name, const char* description, std::string value,
+                                            std::function<void(std::string const&)> callback);
 
 // ***** alias *****
 
-XBT_PUBLIC(void) alias(const char* realname, const char* aliasname);
+XBT_PUBLIC void alias(const char* realname, const char* aliasname);
 
 inline
 void alias(std::initializer_list<const char*> names)
@@ -104,7 +102,6 @@ void alias(std::initializer_list<const char*> names)
 template<class T>
 void bindFlag(T& value, const char* name, const char* description)
 {
-  using namespace std;
   declareFlag<T>(name, description, value, [&value](T const& val) {
     value = val;
   });
@@ -148,17 +145,19 @@ typename std::enable_if<std::is_same<
 bindFlag(T& value, const char* name, const char* description,
   F callback)
 {
-  declareFlag(name, description, value, [&value,callback](const T& val) {
-    callback(val);
-    value = std::move(val);
-  });
+  declareFlag(name, description, value,
+    std::function<void(const T&)>([&value,callback](const T& val) {
+      callback(val);
+      value = std::move(val);
+    }
+  ));
 }
 
 /** Bind a variable to configuration flag
  *
  *  <pre><code>
  *  static int x;
- *  simgrid::config::bindFlag(a, "x", [](int x) { return return x > 0; });
+ *  simgrid::config::bindFlag(a, "x", [](int x) { return x > 0; });
  *  </code></pre>
  */
 // F is a predicate, F : T const& -> bool
@@ -170,18 +169,20 @@ typename std::enable_if<std::is_same<
 bindFlag(T& value, const char* name, const char* description,
   F callback)
 {
-  declareFlag(name, description, value, [&value,callback](const T& val) {
-    if (!callback(val))
-      throw std::range_error("invalid value");
-    value = std::move(val);
-  });
+  declareFlag(name, description, value,
+    std::function<void(const T&)>([&value, callback](const T& val) {
+      if (not callback(val))
+        throw std::range_error("invalid value.");
+        value = std::move(val);
+    })
+  );
 }
 
 /** A variable bound to a CLI option
  *
  *  <pre><code>
  *  static simgrid::config::flag<int> answer("answer", "Expected answer", 42);
- *  static simgrid::config::flag<std::string> name("name", "Ford Prefect", "John Doe");
+ *  static simgrid::config::flag<std::string> name("name", "Ford Perfect", "John Doe");
  *  static simgrid::config::flag<double> gamma("gamma", "Gamma factor", 1.987);
  *  </code></pre>
  */
@@ -240,5 +241,6 @@ public:
 
 }
 }
+XBT_PUBLIC std::string xbt_cfg_get_string(const char* name);
 
 #endif