From: Bruno Haible <bruno@clisp.org>
Date: Mon, 27 Nov 2006 12:36:42 +0000 (+0000)
Subject: Add operator==.
X-Git-Tag: v0.17~637
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=63eb88048e86ec314d1b02a2c45e87ab4b699afe;p=thirdparty%2Fgettext.git

Add operator==.
---

diff --git a/gnulib-local/ChangeLog b/gnulib-local/ChangeLog
index bf1bc462b..02450cd6a 100644
--- a/gnulib-local/ChangeLog
+++ b/gnulib-local/ChangeLog
@@ -1,3 +1,8 @@
+2006-11-26  Bruno Haible  <bruno@clisp.org>
+
+	* build-aux/moopp: In the C++ class definition, add 'operator ==',
+	'operator !=' members, and add constructors for downcasting.
+
 2006-11-25  Bruno Haible  <bruno@clisp.org>
 
 	* lib/glibconfig_.h (g_return_if_fail, g_return_val_if_fail,
diff --git a/gnulib-local/build-aux/moopp b/gnulib-local/build-aux/moopp
index 4093c57f9..4fa445570 100755
--- a/gnulib-local/build-aux/moopp
+++ b/gnulib-local/build-aux/moopp
@@ -368,6 +368,9 @@ func_start_creation "$newfile"
   done
   # The 'operator void *' is needed to avoid ambiguous conversion chains.
   echo "  operator void * () { return _pointer; }"
+  # The 'operator ==' and 'operator !=' are needed to avoid ambiguous comparisons with NULL.
+  echo "  bool operator == (const void *p) { return _pointer == p; }"
+  echo "  bool operator != (const void *p) { return _pointer != p; }"
   atroot=yes
   for classname in $all_superclasses; do
     if test -n "$atroot"; then
@@ -375,7 +378,9 @@ func_start_creation "$newfile"
     else
       repclassalias="${classname}_representation"
     fi
-    echo "  operator ${classname}_t () { return (${classname}_t) ($struct ${repclassalias} *) _pointer; }"
+    echo "  operator ${classname}_t () { return (${classname}_t) (struct ${repclassalias} *) _pointer; }"
+    # The 'explicit' constructors allow to downcast.
+    echo "  explicit ${main_classname}_t (${classname}_t x) : _pointer ((struct ${main_repclassalias} *) (void *) x) {}"
     atroot=
   done
   echo "};"