Implement a config::Flag::get_name()

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

diff --git a/include/xbt/config.hpp b/include/xbt/config.hpp
index d9c3de9..8df3f1e 100644 (file)
--- a/include/xbt/config.hpp
+++ b/include/xbt/config.hpp
@@ -175,6 +175,15 @@ bind_flag(T& value, const char* name, const char* description, std::map<T, std::
                  value = std::move(val);
                }));
 }
+template <class T, class F>
+typename std::enable_if<std::is_same<void, decltype(std::declval<F>()(std::declval<const T&>()))>::value, void>::type
+bind_flag(T& value, const char* name, std::initializer_list<const char*> aliases, const char* description,
+          std::map<T, std::string> valid_values, F callback)
+{
+  bind_flag(value, name, description, std::move(valid_values), std::move(callback));
+  alias(name, std::move(aliases));
+}
+
 /** Bind a variable to configuration flag
  *
  *  <pre><code>
@@ -205,6 +214,8 @@ bind_flag(T& value, const char* name, const char* description, F callback)
 template<class T>
 class Flag {
   T value_;
+  std::string name_;
+
 public:
 
   /** Constructor
@@ -213,13 +224,14 @@ public:
    *  @param desc  Flag description
    *  @param value Flag initial/default value
    */
-  Flag(const char* name, const char* desc, T value) : value_(value)
+  Flag(const char* name, const char* desc, T value) : value_(value), name_(name)
   {
     simgrid::config::bind_flag(value_, name, desc);
   }
 
   /** Constructor taking also an array of aliases for name */
-  Flag(const char* name, std::initializer_list<const char*> aliases, const char* desc, T value) : value_(value)
+  Flag(const char* name, std::initializer_list<const char*> aliases, const char* desc, T value)
+      : value_(value), name_(name)
   {
     simgrid::config::bind_flag(value_, name, std::move(aliases), desc);
   }
@@ -227,15 +239,14 @@ public:
   /* A constructor accepting a callback that will be passed the parameter.
    * It can either return a boolean (informing whether the parameter is valid), or returning void.
    */
-  template<class F>
-  Flag(const char* name, const char* desc, T value, F callback) : value_(value)
+  template <class F> Flag(const char* name, const char* desc, T value, F callback) : value_(value), name_(name)
   {
     simgrid::config::bind_flag(value_, name, desc, std::move(callback));
   }
 
   template <class F>
   Flag(const char* name, std::initializer_list<const char*> aliases, const char* desc, T value, F callback)
-      : value_(value)
+      : value_(value), name_(name)
   {
     simgrid::config::bind_flag(value_, name, std::move(aliases), desc, std::move(callback));
   }
@@ -244,11 +255,21 @@ public:
    * and producing an informative error message when an invalid value is passed, or when help is passed as a value.
    */
   template <class F>
-  Flag(const char* name, const char* desc, T value, std::map<T, std::string> valid_values, F callback) : value_(value)
+  Flag(const char* name, const char* desc, T value, std::map<T, std::string> valid_values, F callback)
+      : value_(value), name_(name)
   {
     simgrid::config::bind_flag(value_, name, desc, std::move(valid_values), std::move(callback));
   }
 
+  /* A constructor with everything */
+  template <class F>
+  Flag(const char* name, std::initializer_list<const char*> aliases, const char* desc, T value,
+       std::map<T, std::string> valid_values, F callback)
+      : value_(value), name_(name)
+  {
+    simgrid::config::bind_flag(value_, name, std::move(aliases), desc, std::move(valid_values), std::move(callback));
+  }
+
   // No copy:
   Flag(Flag const&) = delete;
   Flag& operator=(Flag const&) = delete;
@@ -257,6 +278,7 @@ public:
   T& get() { return value_; }
   T const& get() const { return value_; }
 
+  std::string get_name() { return name_; }
   // Implicit conversion to the underlying type:
   operator T&() { return value_; }
   operator T const&() const{ return value_; }