From: Han-Wen Nienhuys & Jan Nieuwenhuizen <hanjan@lilypond.org>
Date: Fri, 1 Nov 1996 16:48:30 +0000 (+0100)
Subject: partial: 0.0.4.hanjan
X-Git-Tag: release/0.0.4~1
X-Git-Url: https://git.donarmstrong.com/?a=commitdiff_plain;h=3daac955f29e408aa2aa271a883195ddc54633f4;p=lilypond.git

partial: 0.0.4.hanjan
---

diff --git a/flower/plist.hh b/flower/plist.hh
new file mode 100644
index 0000000000..3660968a47
--- /dev/null
+++ b/flower/plist.hh
@@ -0,0 +1,53 @@
+/*
+  list.hh -- part of flowerlib
+
+  (c) 1996 Han-Wen Nienhuys & Jan Nieuwenhuizen
+*/
+
+#ifndef PLIST_HH
+#define PLIST_HH
+
+#include "list.hh"
+
+/// Use for list of pointers, e.g. PointerList<AbstractType*>.
+template<class T>
+class PointerList : public List<T>
+{
+ public:
+    PointerList(PointerList&) { set_empty(); }
+    PointerList( const T& thing ) : List<T>( thing ) { }
+    PointerList() {}
+    ///
+    virtual ~PointerList();
+    /**
+      This function deletes deletes the allocated pointers of all links. 
+      #\Ref{~List}# is used to delete the links themselves.
+      */ 
+
+ protected:
+    virtual void remove( Cursor<T> me );
+};
+/**
+  NOTE:
+  The copy constructor doesn't do what you'd want:
+  Since T might have a virtual ctor, we don't try to do a
+
+    new T(*cursor)
+
+  You have to copy this yourself, or use the macro PointerList__copy
+  
+  */
+#define PointerList__copy(T, to, from, op)   \
+  for (PCursor<T> _pc_(from); _pc_.ok(); _pc_++)\
+      to.bottom().add(_pc_->op)\
+  \
+
+
+template<class T>
+void PL_copy(PointerList<T> &dst,PointerList<T> const&src);
+
+#define PL_instantiate(a) L_instantiate(a *); template class PointerList<a*>
+
+#include "plist.inl"
+
+#endif
diff --git a/flower/plist.inl b/flower/plist.inl
new file mode 100644
index 0000000000..fb18c87241
--- /dev/null
+++ b/flower/plist.inl
@@ -0,0 +1,43 @@
+/* -*-c++-*-
+  plist.inl -- part of flowerlib
+
+  (c) 1996 Han-Wen Nienhuys& Jan Nieuwenhuizen
+*/
+
+#ifndef PLIST_INL
+#define PLIST_INL
+
+
+
+template<class T>
+inline
+PointerList<T>::~PointerList()
+{
+    Cursor<T> next(*this);
+    for ( Cursor<T> c( *this ); c.ok(); c = next ) {
+	next = c;
+	next++;
+	remove( c );		// PointerList::remove deletes the  real data
+    }
+}
+
+template<class T>
+inline void
+PointerList_print( PointerList<T> const & l  ) 
+{
+    List<T>& promises_to_be_const = (List<T>&) l;
+    for ( Cursor<T> c( promises_to_be_const ); c.ok(); c++ )
+        (*c)->print();  
+}
+
+template<class T>
+inline void
+PL_copy(PointerList<T> &to,PointerList<T> const&src)
+{
+    for (PCursor<T> pc(src); pc.ok(); pc++) {
+	T q = pc;
+	T p=new typeof(*q) (*q) ; // argh, how do i do this in ANSI-C++
+	to.bottom().add(p);
+    }
+}
+#endif