[gtksourceview/wip/chergert/vim] add a marks object

[Christian Hergert <chergert src gnome org>]

commit db044032cdeb0eb23a822fd16d7ef4d9d74d3955
Author: Christian Hergert <chergert redhat com>
Date:   Sun Nov 7 09:51:20 2021 -0800

    add a marks object
    
    this is to eventually help us store/restore marks (m{a-z} 'm `m)

 gtksourceview/meson.build                |   1 +
 gtksourceview/vim/gtk-source-vim-marks.c | 137 +++++++++++++++++++++++++++++++
 gtksourceview/vim/gtk-source-vim-marks.h |  42 ++++++++++
 3 files changed, 180 insertions(+)
---
diff --git a/gtksourceview/meson.build b/gtksourceview/meson.build
index 664af125..c2e3e7f2 100644
--- a/gtksourceview/meson.build
+++ b/gtksourceview/meson.build
@@ -142,6 +142,7 @@ core_private_c = files([
   'vim/gtk-source-vim-command.c',
   'vim/gtk-source-vim-insert.c',
   'vim/gtk-source-vim-insert-literal.c',
+  'vim/gtk-source-vim-marks.c',
   'vim/gtk-source-vim-motion.c',
   'vim/gtk-source-vim-normal.c',
   'vim/gtk-source-vim-registers.c',
diff --git a/gtksourceview/vim/gtk-source-vim-marks.c b/gtksourceview/vim/gtk-source-vim-marks.c
new file mode 100644
index 00000000..6ec33cf9
--- /dev/null
+++ b/gtksourceview/vim/gtk-source-vim-marks.c
@@ -0,0 +1,137 @@
+/*
+ * This file is part of GtkSourceView
+ *
+ * Copyright 2021 Christian Hergert <chergert redhat com>
+ *
+ * GtkSourceView is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * GtkSourceView 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library; if not, see <http://www.gnu.org/licenses/>.
+ *
+ * SPDX-License-Identifier: LGPL-2.1-or-later
+ */
+
+#include "config.h"
+
+#include "gtk-source-vim-marks.h"
+
+struct _GtkSourceVimMarks
+{
+       GtkSourceVimState parent_instance;
+       GHashTable *marks;
+};
+
+G_DEFINE_TYPE (GtkSourceVimMarks, gtk_source_vim_marks, GTK_SOURCE_TYPE_VIM_STATE)
+
+GtkSourceVimState *
+gtk_source_vim_marks_new (void)
+{
+       return g_object_new (GTK_SOURCE_TYPE_VIM_MARKS, NULL);
+}
+
+static void
+remove_mark (gpointer data)
+{
+       GtkTextMark *mark = data;
+       GtkTextBuffer *buffer = gtk_text_mark_get_buffer (mark);
+       gtk_text_buffer_delete_mark (buffer, mark);
+       g_object_unref (mark);
+}
+
+static void
+gtk_source_vim_marks_dispose (GObject *object)
+{
+       GtkSourceVimMarks *self = (GtkSourceVimMarks *)object;
+
+       g_clear_pointer (&self->marks, g_hash_table_unref);
+
+       G_OBJECT_CLASS (gtk_source_vim_marks_parent_class)->dispose (object);
+}
+
+static void
+gtk_source_vim_marks_class_init (GtkSourceVimMarksClass *klass)
+{
+       GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+       object_class->dispose = gtk_source_vim_marks_dispose;
+}
+
+static void
+gtk_source_vim_marks_init (GtkSourceVimMarks *self)
+{
+       self->marks = g_hash_table_new_full (g_str_hash,
+                                            g_str_equal,
+                                            NULL,
+                                            remove_mark);
+}
+
+GtkTextMark *
+gtk_source_vim_marks_get_mark (GtkSourceVimMarks *self,
+                               const char        *name)
+{
+       g_return_val_if_fail (GTK_SOURCE_IS_VIM_MARKS (self), NULL);
+       g_return_val_if_fail (name != NULL, NULL);
+
+       return g_hash_table_lookup (self->marks, name);
+}
+
+gboolean
+gtk_source_vim_marks_get_iter (GtkSourceVimMarks *self,
+                               const char        *name,
+                               GtkTextIter       *iter)
+{
+       GtkTextMark *mark;
+
+       g_return_val_if_fail (GTK_SOURCE_IS_VIM_MARKS (self), FALSE);
+       g_return_val_if_fail (name != NULL, FALSE);
+
+       if (!(mark = gtk_source_vim_marks_get_mark (self, name)))
+               return FALSE;
+
+       if (iter == NULL)
+               return TRUE;
+
+       gtk_text_buffer_get_iter_at_mark (gtk_text_mark_get_buffer (mark), iter, mark);
+
+       return TRUE;
+}
+
+void
+gtk_source_vim_marks_set_mark (GtkSourceVimMarks *self,
+                               const char        *name,
+                               const GtkTextIter *iter)
+{
+       GtkTextBuffer *buffer;
+       GtkTextMark *mark;
+
+       g_return_if_fail (GTK_SOURCE_IS_VIM_MARKS (self));
+       g_return_if_fail (name != NULL);
+
+       if (iter == NULL)
+       {
+               g_hash_table_remove (self->marks, name);
+               return;
+       }
+
+       if (!(mark = gtk_source_vim_marks_get_mark (self, name)))
+       {
+               buffer = GTK_TEXT_BUFFER (gtk_source_vim_state_get_buffer (GTK_SOURCE_VIM_STATE (self), NULL, 
NULL));
+               mark = gtk_text_buffer_create_mark (buffer, NULL, iter, TRUE);
+               g_hash_table_insert (self->marks,
+                                    (char *)g_intern_string (name),
+                                    g_object_ref (mark));
+       }
+       else
+       {
+               buffer = gtk_text_mark_get_buffer (mark);
+               gtk_text_buffer_move_mark (buffer, mark, iter);
+       }
+}
diff --git a/gtksourceview/vim/gtk-source-vim-marks.h b/gtksourceview/vim/gtk-source-vim-marks.h
new file mode 100644
index 00000000..1c00540d
--- /dev/null
+++ b/gtksourceview/vim/gtk-source-vim-marks.h
@@ -0,0 +1,42 @@
+/*
+ * This file is part of GtkSourceView
+ *
+ * Copyright 2021 Christian Hergert <chergert redhat com>
+ *
+ * GtkSourceView is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * GtkSourceView 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library; if not, see <http://www.gnu.org/licenses/>.
+ *
+ * SPDX-License-Identifier: LGPL-2.1-or-later
+ */
+
+#pragma once
+
+#include "gtk-source-vim-state.h"
+
+G_BEGIN_DECLS
+
+#define GTK_SOURCE_TYPE_VIM_MARKS (gtk_source_vim_marks_get_type())
+
+G_DECLARE_FINAL_TYPE (GtkSourceVimMarks, gtk_source_vim_marks, GTK_SOURCE, VIM_MARKS, GtkSourceVimState)
+
+GtkSourceVimState *gtk_source_vim_marks_new      (void);
+GtkTextMark       *gtk_source_vim_marks_get_mark (GtkSourceVimMarks *self,
+                                                  const char        *name);
+gboolean           gtk_source_vim_marks_get_iter (GtkSourceVimMarks *self,
+                                                  const char        *name,
+                                                  GtkTextIter       *iter);
+void               gtk_source_vim_marks_set_mark (GtkSourceVimMarks *self,
+                                                  const char        *name,
+                                                  const GtkTextIter *iter);
+
+G_END_DECLS