libdoomsday|DEDRegister: DEDRegister provides immutable access to loo…

…kup DictionaryValues
skyjake · Jul 29, 2014 · 1493e6f · 1493e6f
1 parent ddad669
commit 1493e6f
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diff --git a/doomsday/libdoomsday/include/doomsday/defs/dedregister.h b/doomsday/libdoomsday/include/doomsday/defs/dedregister.h
@@ -20,6 +20,7 @@
 #define LIBDOOMSDAY_DEDREGISTER_H
 
 #include "../libdoomsday.h"
+#include <de/DictionaryValue>
 #include <de/Record>
 
 /**
@@ -92,6 +93,11 @@ class LIBDOOMSDAY_PUBLIC DEDRegister
     de::Record &       find(de::String const &key, de::String const &value);
     de::Record const & find(de::String const &key, de::String const &value) const;
 
+    /**
+     * Provides immutable access to the register's dictionary, for efficient traversal.
+     */
+    de::DictionaryValue const &lookup(de::String const &key) const;
+
 private:
     DENG2_PRIVATE(d)
 };

diff --git a/doomsday/libdoomsday/src/defs/dedregister.cpp b/doomsday/libdoomsday/src/defs/dedregister.cpp
@@ -304,3 +304,12 @@ Record const &DEDRegister::find(String const &key, String const &value) const
     }
     return *rec;
 }
+
+DictionaryValue const &DEDRegister::lookup(String const &key) const
+{
+    if(!d->keys.contains(key))
+    {
+        throw UndefinedKeyError("DEDRegister::lookup", "Key '" + key + "' not defined");
+    }
+    return d->lookup(key);
+}