Start moving away from the Java-like containers.

lout/container.hh

@@ -22,6 +22,15 @@
 #define __LOUT_CONTAINER_HH_
 
 #include "object.hh"
+#include <Alepha/Concepts.h>
+
+// TODO: Over time I'll have to retire the Java-like containers here.
+// For now, a few of the "niceties" they offer should be wrapped and/or
+// adapted.
+#include <list>
+#include <vector>
+#include <map>
+#include <unordered_map>
 
 namespace lout {
 
@@ -39,6 +48,21 @@ namespace lout {
  */
 namespace container {
 
+template< Alepha::DerivedFrom< object::Object > T >
+void
+intoStringBuffer( const std::list< T * > &container, misc::StringBuffer *const sb )
+{
+	sb->append("{ ");
+	bool first= true;
+	for( auto *object: container )
+	{
+		if( not first ) sb->append(", ");
+		object->intoStringBuffer(sb);
+		first = false;
+	}
+	sb->append(" }");
+}
+
 /**
  * \brief The container classes defined here contain instances of
  *    object::Object.

lout/signal.cc

@@ -30,30 +30,27 @@ using namespace container::typed;
 //    Emitter
 // ------------
 
-Emitter::Emitter ()
-{
-   receivers = new List <Receiver> (false);
-}
+Emitter::Emitter()= default;
 
 Emitter::~Emitter ()
 {
-   for (Iterator<Receiver> it = receivers->iterator (); it.hasNext (); ) {
-      Receiver *receiver = it.getNext ();
-      receiver->unconnectFrom (this);
+   // TODO: RAII this?
+   for( Receiver *receiver: receivers )
+   {
+      receiver->unconnectFrom( this );
    }
-   delete receivers;
 }
 
 void Emitter::intoStringBuffer(misc::StringBuffer *sb)
 {
    sb->append ("<emitter: ");
-   receivers->intoStringBuffer (sb);
+   container::intoStringBuffer( receivers, sb );
    sb->append (">");
 }
 
 void Emitter::unconnect (Receiver *receiver)
 {
-   receivers->removeRef (receiver);
+   receivers.remove( receiver );
 }
 
 /**
@@ -64,7 +61,7 @@ void Emitter::unconnect (Receiver *receiver)
  */
 void Emitter::connect (Receiver *receiver)
 {
-   receivers->append (receiver);
+   receivers.push_back( receiver );
    receiver->connectTo (this);
 }
 
@@ -76,8 +73,8 @@ void Emitter::connect (Receiver *receiver)
  */
 void Emitter::emitVoid (int signalNo, int argc, Object **argv)
 {
-   for (Iterator <Receiver> it = receivers->iterator (); it.hasNext (); ) {
-      Receiver *receiver = it.getNext();
+   for( Receiver *receiver: receivers )
+   {
       emitToReceiver (receiver, signalNo, argc, argv);
    }
 }
@@ -92,8 +89,8 @@ bool Emitter::emitBool (int signalNo, int argc, Object **argv)
 {
    bool b = false, bt;
 
-   for (Iterator <Receiver> it = receivers->iterator (); it.hasNext (); ) {
-      Receiver *receiver = it.getNext();
+   for( Receiver *receiver: receivers )
+   {
       // Note: All receivers are called, even if one returns true.
       // Therefore, something like
       //    b = b || emitToReceiver (receiver, signalNo, argc, argv);
@@ -110,18 +107,14 @@ bool Emitter::emitBool (int signalNo, int argc, Object **argv)
 //    Receiver
 // --------------
 
-Receiver::Receiver()
-{
-   emitters = new List <Emitter> (false);
-}
+Receiver::Receiver()= default;
 
 Receiver::~Receiver()
 {
-   for (Iterator<Emitter> it = emitters->iterator(); it.hasNext(); ) {
-      Emitter *emitter = it.getNext();
+   for( Emitter *emitter: emitters )
+   {
       emitter->unconnect (this);
    }
-   delete emitters;
 }
 
 void Receiver::intoStringBuffer(misc::StringBuffer *sb)
@@ -132,12 +125,12 @@ void Receiver::intoStringBuffer(misc::StringBuffer *sb)
 
 void Receiver::connectTo(Emitter *emitter)
 {
-   emitters->append (emitter);
+   emitters.push_back( emitter );
 }
 
 void Receiver::unconnectFrom(Emitter *emitter)
 {
-   emitters->removeRef (emitter);
+   emitters.remove( emitter);
 }
 
 // ------------------------

lout/signal.hh

@@ -1,6 +1,8 @@
 #ifndef __LOUT_SIGNALS_HH__
 #define __LOUT_SIGNALS_HH__
 
+#include <list>
+
 #include "object.hh"
 #include "container.hh"
 
@@ -214,7 +216,7 @@ class Emitter: public object::Object
    friend class Receiver;
 
 private:
-   container::typed::List <Receiver> *receivers;
+   std::list< Receiver * > receivers;
 
    void unconnect (Receiver *receiver);
 
@@ -255,7 +257,7 @@ class Receiver: public object::Object
   friend class Emitter;
 
 private:
-   container::typed::List<Emitter> *emitters;
+   std::list< Emitter * > emitters;
 
    void connectTo(Emitter *emitter);
    void unconnectFrom(Emitter *emitter);