X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/b9625f82f86db0674e911887addce45dca31b57f..7d1122d12caaa3cc08cea6b302f86edaaa8a8bd7:/src/xbt/config.cpp

diff --git a/src/xbt/config.cpp b/src/xbt/config.cpp
index f317be522f..3d7c730097 100644
--- a/src/xbt/config.cpp
+++ b/src/xbt/config.cpp
@@ -1,4 +1,4 @@
-/* Copyright (c) 2004-2020. The SimGrid Team. All rights reserved.     */
+/* Copyright (c) 2004-2021. 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. */
@@ -16,8 +16,6 @@
 #include <stdexcept>
 #include <string>
 #include <string>
-#include <type_traits>
-#include <typeinfo>
 #include <vector>
 
 #include "simgrid/Exception.hpp"
@@ -38,55 +36,41 @@ namespace config {
 
 namespace {
 
-const char* true_values[] = {
-  "yes", "on", "true", "1"
-};
-const char* false_values[] = {
-  "no", "off", "false", "0"
-};
-
-static bool parse_bool(const char* value)
+bool parse_bool(const char* value)
 {
-  for (const char* const& true_value : true_values)
+  for (const char* true_value : {"yes", "on", "true", "1"})
     if (std::strcmp(true_value, value) == 0)
       return true;
-  for (const char* const& false_value : false_values)
+  for (const char* false_value : {"no", "off", "false", "0"})
     if (std::strcmp(false_value, value) == 0)
       return false;
   throw std::range_error("not a boolean");
 }
 
-static double parse_double(const char* value)
+double parse_double(const char* value)
 {
   char* end;
   errno = 0;
   double res = std::strtod(value, &end);
   if (errno == ERANGE)
     throw std::range_error("out of range");
-  else if (errno)
-    xbt_die("Unexpected errno");
+  xbt_assert(errno == 0, "Unexpected errno: %d", errno);
   if (end == value || *end != '\0')
     throw std::range_error("invalid double");
-  else
-    return res;
+  return res;
 }
 
-static long int parse_long(const char* value)
+long int parse_long(const char* value)
 {
   char* end;
   errno = 0;
   long int res = std::strtol(value, &end, 0);
-  if (errno) {
-    if (res == LONG_MIN && errno == ERANGE)
-      throw std::range_error("underflow");
-    else if (res == LONG_MAX && errno == ERANGE)
-      throw std::range_error("overflow");
-    xbt_die("Unexpected errno");
-  }
+  if (errno == ERANGE)
+    throw std::range_error(res == LONG_MIN ? "underflow" : "overflow");
+  xbt_assert(errno == 0, "Unexpected errno: %d", errno);
   if (end == value || *end != '\0')
     throw std::range_error("invalid integer");
-  else
-    return res;
+  return res;
 }
 
 // ***** ConfigType *****
@@ -189,7 +173,6 @@ public:
   TypedConfigurationElement(const std::string& key, const std::string& desc, T value, std::function<void(T&)> callback)
       : ConfigurationElement(key, desc), content(std::move(value)), callback(std::move(callback))
   {}
-  ~TypedConfigurationElement() = default;
 
   std::string get_string_value() override;
   const char* get_type_name() override;
@@ -217,7 +200,7 @@ public:
       this->update();
     } else {
       XBT_DEBUG("Do not override configuration variable '%s' with value '%s' because it was already set.",
-                get_key().c_str(), to_string(value).c_str());
+                get_key().c_str(), get_string_value().c_str());
     }
   }
 };
@@ -227,6 +210,12 @@ template <class T> std::string TypedConfigurationElement<T>::get_string_value()
   return to_string(content);
 }
 
+template <> std::string TypedConfigurationElement<double>::get_string_value() // override
+{
+  // don't want std::to_string which uses %f, and formats very small values as 0.000000
+  return xbt::string_printf("%g", content);
+}
+
 template <class T> void TypedConfigurationElement<T>::set_string_value(const char* value) // override
 {
   this->content = ConfigType<T>::parse(value);
@@ -246,9 +235,9 @@ template <class T> const char* TypedConfigurationElement<T>::get_type_name() //
 class Config {
 private:
   // name -> ConfigElement:
-  std::map<std::string, std::unique_ptr<ConfigurationElement>> options;
+  std::map<std::string, std::unique_ptr<ConfigurationElement>, std::less<>> options;
   // alias -> ConfigElement from options:
-  std::map<std::string, ConfigurationElement*> aliases;
+  std::map<std::string, ConfigurationElement*, std::less<>> aliases;
   bool warn_for_aliases = true;
 
 public:
@@ -265,7 +254,7 @@ public:
   {
     xbt_assert(options.find(name) == options.end(), "Refusing to register the config element '%s' twice.",
                name.c_str());
-    TypedConfigurationElement<T>* variable = new TypedConfigurationElement<T>(name, std::forward<A>(a)...);
+    auto* variable = new TypedConfigurationElement<T>(name, std::forward<A>(a)...);
     XBT_DEBUG("Register cfg elm %s (%s) of type %s @%p in set %p)", name.c_str(), variable->get_description().c_str(),
               variable->get_type_name(), variable, this);
     options[name].reset(variable);