From 6bdfdc8dc53be254b9ccf99218ad97c0029e3e86 Mon Sep 17 00:00:00 2001
From: Nicola Baldo <nbaldo@cttc.es>
Date: Fri, 3 Jul 2009 13:43:43 +0200
Subject: [PATCH] implemented GlobalValue::GetValueByName ()

---
 src/core/global-value.cc | 24 ++++++++++++++++++++++++
 src/core/global-value.h  | 24 ++++++++++++++++++++++++
 2 files changed, 48 insertions(+)

diff --git a/src/core/global-value.cc b/src/core/global-value.cc
index 70a226e55..506fb11b8 100644
--- a/src/core/global-value.cc
+++ b/src/core/global-value.cc
@@ -174,6 +174,30 @@ GlobalValue::End (void)
 {
   return GetVector ()->end ();
 }
+
+bool
+GlobalValue::GetValueByNameFailSafe (std::string name, AttributeValue &value)
+{
+  for (GlobalValue::Iterator gvit = GlobalValue::Begin (); gvit != GlobalValue::End (); ++gvit)
+    {
+      if ((*gvit)->GetName () == name)
+         {
+           (*gvit)->GetValue (value);  
+           return true;
+         }
+    } 
+  return false; // not found
+}
+
+void
+GlobalValue::GetValueByName (std::string name, AttributeValue &value)
+{
+  if (! GetValueByNameFailSafe (name, value))
+    {
+      NS_FATAL_ERROR ("Could not find GlobalValue named \"" << name << "\"");
+    }
+}
+
 GlobalValue::Vector *
 GlobalValue::GetVector (void)
 {
diff --git a/src/core/global-value.h b/src/core/global-value.h
index a40d2244f..c744247dd 100644
--- a/src/core/global-value.h
+++ b/src/core/global-value.h
@@ -114,6 +114,30 @@ public:
    * \returns an iterator which represents a pointer to the last GlobalValue registered.
    */
   static Iterator End (void);
+
+
+  /** 
+   * finds the GlobalValue with the given name and returns its value
+   * 
+   * @param name the name of the GlobalValue to be found
+   * @param value where to store the value of the found GlobalValue
+   * 
+   * @return true if the GlobalValue was found, false otherwise
+   */
+  static bool GetValueByNameFailSafe (std::string name, AttributeValue &value);
+
+  /** 
+   * finds the GlobalValue with the given name and returns its
+   * value. This method cannot fail, i.e., it will trigger a
+   * NS_FATAL_ERROR if the requested GlobalValue is not found.
+   * 
+   * @param name the name of the GlobalValue to be found
+   * @param value where to store the value of the found GlobalValue
+   * 
+   */
+  static void GetValueByName (std::string name, AttributeValue &value);
+  
+
 private:
   friend class GlobalValueTests;
   static Vector *GetVector (void);