Initial revision

git-svn-id: svn://localhost/trunk/ardour2@4 d708f5d6-7413-0410-9779-e7cbd77b26cf

libs/glibmm2/glibmm/error.cc

@@ -0,0 +1,187 @@
+// -*- c++ -*-
+/* $Id$ */
+
+/* error.cc
+ *
+ * Copyright 2002 The gtkmm Development Team
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <glib/gerror.h>
+#include <glib/gmessages.h>
+
+#include <map>
+#include <glibmmconfig.h>
+#include <glibmm/error.h>
+#include <glibmm/wrap_init.h>
+
+GLIBMM_USING_STD(map)
+
+
+namespace
+{
+
+typedef std::map<GQuark,Glib::Error::ThrowFunc> ThrowFuncTable;
+
+static ThrowFuncTable* throw_func_table = 0;
+
+} // anonymous namespace
+
+
+namespace Glib
+{
+
+Error::Error()
+:
+  gobject_ (0)
+{}
+
+Error::Error(GQuark domain, int code, const Glib::ustring& message)
+:
+  gobject_ (g_error_new_literal(domain, code, message.c_str()))
+{}
+
+Error::Error(GError* gobject, bool take_copy)
+:
+  gobject_ ((take_copy && gobject) ? g_error_copy(gobject) : gobject)
+{}
+
+Error::Error(const Error& other)
+:
+  Exception(other),
+  gobject_ ((other.gobject_) ? g_error_copy(other.gobject_) : 0)
+{}
+
+Error& Error::operator=(const Error& other)
+{
+  if(gobject_ != other.gobject_)
+  {
+    if(gobject_)
+    {
+      g_error_free(gobject_);
+      gobject_ = 0;
+    }
+    if(other.gobject_)
+    {
+      gobject_ = g_error_copy(other.gobject_);
+    }
+  }
+  return *this;
+}
+
+Error::~Error() throw()
+{
+  if(gobject_)
+    g_error_free(gobject_);
+}
+
+GQuark Error::domain() const
+{
+  g_return_val_if_fail(gobject_ != 0, 0);
+
+  return gobject_->domain;
+}
+
+int Error::code() const
+{
+  g_return_val_if_fail(gobject_ != 0, -1);
+
+  return gobject_->code;
+}
+
+Glib::ustring Error::what() const
+{
+  g_return_val_if_fail(gobject_ != 0, "");
+  g_return_val_if_fail(gobject_->message != 0, "");
+
+  return gobject_->message;
+}
+
+bool Error::matches(GQuark domain, int code) const
+{
+  return g_error_matches(gobject_, domain, code);
+}
+
+GError* Error::gobj()
+{
+  return gobject_;
+}
+
+const GError* Error::gobj() const
+{
+  return gobject_;
+}
+
+void Error::propagate(GError** dest)
+{
+  g_propagate_error(dest, gobject_);
+  gobject_ = 0;
+}
+
+
+// static
+void Error::register_init()
+{
+  if(!throw_func_table)
+  {
+    throw_func_table = new ThrowFuncTable();
+    Glib::wrap_init(); // make sure that at least the Glib exceptions are registered
+  }
+}
+
+// static
+void Error::register_cleanup()
+{
+  if(throw_func_table)
+  {
+    delete throw_func_table;
+    throw_func_table = 0;
+  }
+}
+
+// static
+void Error::register_domain(GQuark domain, Error::ThrowFunc throw_func)
+{
+  g_assert(throw_func_table != 0);
+
+  (*throw_func_table)[domain] = throw_func;
+}
+
+// static, noreturn
+void Error::throw_exception(GError* gobject)
+{
+  g_assert(gobject != 0);
+
+  // Just in case Gtk::Main hasn't been instantiated yet.
+  if(!throw_func_table)
+    register_init();
+
+  if(const ThrowFunc throw_func = (*throw_func_table)[gobject->domain])
+  {
+    (*throw_func)(gobject);
+    g_assert_not_reached();
+  }
+
+  g_warning("Glib::Error::throw_exception():\n  "
+            "unknown error domain '%s': throwing generic Glib::Error exception\n",
+            (gobject->domain) ? g_quark_to_string(gobject->domain) : "(null)");
+
+  // Doesn't copy, because error-returning functions return a newly allocated GError for us.
+  throw Glib::Error(gobject);
+}
+
+} // namespace Glib
+