From 2cb704856168422af0d5d61fa391efd0c62497d8 Mon Sep 17 00:00:00 2001
From: Jürgen Knödlseder <jurgen.knodlseder@irap.omp.eu>
Date: Mon, 27 May 2019 15:13:35 +0200
Subject: [PATCH] Add GCTAResponseCache::nnames(), GCTAResponseCache::name() and GCTAResponseCache::remove() methods

---
 inst/cta/include/GCTAResponseCache.hpp | 20 +++++++++++++++++++-
 inst/cta/src/GCTAResponseCache.cpp     | 59 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-
 2 files changed, 77 insertions(+), 2 deletions(-)

diff --git a/inst/cta/include/GCTAResponseCache.hpp b/inst/cta/include/GCTAResponseCache.hpp
index d6bd122..1f4c21b 100644
--- a/inst/cta/include/GCTAResponseCache.hpp
+++ b/inst/cta/include/GCTAResponseCache.hpp
@@ -1,7 +1,7 @@
 /***************************************************************************
  *             GCTAResponseCache.hpp - CTA response cache class            *
  * ----------------------------------------------------------------------- *
- *  copyright (C) 2018 by Juergen Knoedlseder                              *
+ *  copyright (C) 2018-2019 by Juergen Knoedlseder                         *
  * ----------------------------------------------------------------------- *
  *                                                                         *
  *  This program is free software: you can redistribute it and/or modify   *
@@ -70,6 +70,7 @@ public:
     std::string        classname(void) const;
     int                size(void) const;
     bool               is_empty(void) const;
+    int                nnames(void) const;
     int                ndirs(void) const;
     int                nerecos(void) const;
     int                netrues(void) const;
@@ -91,6 +92,8 @@ public:
                                 const GEnergy&     ereco,
                                 const GEnergy&     etrue,
                                 double*            value = NULL) const;
+    std::string        name(const int& index) const;
+    void               remove(const std::string& name);
     std::string        print(const GChatter& chatter = NORMAL) const;
 
 protected:
@@ -129,4 +132,19 @@ bool GCTAResponseCache::is_empty(void) const
     return (m_cache.empty());
 }
 
+
+/***********************************************************************//**
+ * @brief Return number of names in cache
+ *
+ * @return Number of names in cache
+ *
+ * Returns the number of names in the response cache.
+ ***************************************************************************/
+inline
+int GCTAResponseCache::nnames(void) const
+{
+    // Return number of names
+    return m_cache.size();
+}
+
 #endif /* GCTARESPONSECACHE_HPP */
diff --git a/inst/cta/src/GCTAResponseCache.cpp b/inst/cta/src/GCTAResponseCache.cpp
index d206207..6f78a13 100644
--- a/inst/cta/src/GCTAResponseCache.cpp
+++ b/inst/cta/src/GCTAResponseCache.cpp
@@ -1,7 +1,7 @@
 /***************************************************************************
  *             GCTAResponseCache.cpp - CTA response cache class            *
  * ----------------------------------------------------------------------- *
- *  copyright (C) 2018 by Juergen Knoedlseder                              *
+ *  copyright (C) 2018-2019 by Juergen Knoedlseder                         *
  * ----------------------------------------------------------------------- *
  *                                                                         *
  *  This program is free software: you can redistribute it and/or modify   *
@@ -33,6 +33,7 @@
 #include "GCTAInstDir.hpp"
 
 /* __ Method name definitions ____________________________________________ */
+#define G_NAME                                "GCTAResponseCache::name(int&)"
 
 /* __ Macros _____________________________________________________________ */
 
@@ -470,6 +471,62 @@ bool GCTAResponseCache::contains(const std::string& name,
 
 
 /***********************************************************************//**
+ * @brief Return name of cache element
+ *
+ * @param[in] index Cache element number (0,...,nnames()-1).
+ * @return Name of cache element.
+ *
+ * Returns name of cache element with specified @p index.
+ ***************************************************************************/
+std::string GCTAResponseCache::name(const int& index) const
+{
+    // Raise an exception if index is out of range
+    if (index < 0 || index >= size()) {
+        throw GException::out_of_range(G_NAME, index, size());
+    }
+
+    // Initialise name
+    std::string name;
+
+    // Initialise counter
+    int counter = 0;
+
+    // Loop over names and extract the name that corresponds to the index
+    for (GCTAResponseCacheName::const_iterator it_name = m_cache.begin();
+         it_name != m_cache.end(); ++it_name, ++counter) {
+        if (counter == index) {
+            name = it_name->first;
+            break;
+        }
+    }
+
+    // Return name
+    return name;
+}
+
+
+/***********************************************************************//**
+ * @brief Remove cache values for a given name
+ *
+ * @param[in] name Cache name.
+ *
+ * Removes the cache values for a given @p name. If the @p name does not
+ * exist in the cache the method does nothing.
+ ***************************************************************************/
+void GCTAResponseCache::remove(const std::string& name)
+{
+    // Search for name in cache
+    GCTAResponseCacheName::const_iterator it_name = m_cache.find(name);
+    if (it_name != m_cache.end()) {
+        m_cache.erase(it_name);
+    }
+
+    // Return
+    return;
+}
+
+
+/***********************************************************************//**
  * @brief Clone CTA response cache
  *
  * @return Pointer to deep copy of CTA response cache.
--
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