[gtksourceview/wip/chergert/vim] add some more movement ctors

[Christian Hergert <chergert src gnome org>]

commit 52c5370af15bef0b98ed5b106eee0ef97487d507
Author: Christian Hergert <chergert redhat com>
Date:   Wed Oct 27 11:34:31 2021 -0700

    add some more movement ctors

 gtksourceview/vim/gtk-source-vim-motion.c | 60 +++++++++++++++++++++++++++----
 gtksourceview/vim/gtk-source-vim-motion.h | 18 +++++-----
 2 files changed, 64 insertions(+), 14 deletions(-)
---
diff --git a/gtksourceview/vim/gtk-source-vim-motion.c b/gtksourceview/vim/gtk-source-vim-motion.c
index 47259608..0e201d34 100644
--- a/gtksourceview/vim/gtk-source-vim-motion.c
+++ b/gtksourceview/vim/gtk-source-vim-motion.c
@@ -453,22 +453,48 @@ motion_backward_char_same_line (GtkTextIter        *iter,
        return FALSE;
 }
 
+static gboolean
+motion_prev_line_end (GtkTextIter        *iter,
+                      GtkSourceVimMotion *state)
+{
+       guint line = gtk_text_iter_get_line (iter);
+
+       if (line == 0)
+       {
+               gtk_text_iter_set_offset (iter, 0);
+               return TRUE;
+       }
+
+       gtk_text_buffer_get_iter_at_line (gtk_text_iter_get_buffer (iter), iter, line - 1);
+
+       if (!gtk_text_iter_ends_line (iter))
+               gtk_text_iter_forward_to_line_end (iter);
+
+       /* Place on last character, not \n */
+       if (!gtk_text_iter_starts_line (iter))
+               gtk_text_iter_backward_char (iter);
+
+       return TRUE;
+}
+
 static gboolean
 motion_prev_line (GtkTextIter        *iter,
                   GtkSourceVimMotion *state)
 {
        guint line = gtk_text_iter_get_line (iter);
 
-       if (line > 0)
-               return gtk_text_buffer_get_iter_at_line (gtk_text_iter_get_buffer (iter), iter, line - 1);
-
-       if (!gtk_text_iter_is_start (iter))
+       if (line == 0)
        {
-               gtk_text_iter_set_line_offset (iter, 0);
+               gtk_text_iter_set_offset (iter, 0);
                return TRUE;
        }
 
-       return FALSE;
+       gtk_text_buffer_get_iter_at_line (gtk_text_iter_get_buffer (iter), iter, line - 1);
+
+       if (!gtk_text_iter_starts_line (iter))
+               gtk_text_iter_set_line_offset (iter, 0);
+
+       return TRUE;
 }
 
 static gboolean
@@ -1338,6 +1364,28 @@ gtk_source_vim_motion_new_line_end (void)
        return GTK_SOURCE_VIM_STATE (self);
 }
 
+GtkSourceVimState *
+gtk_source_vim_motion_new_line_start (void)
+{
+       GtkSourceVimMotion *self;
+
+       self = g_object_new (GTK_SOURCE_TYPE_VIM_MOTION, NULL);
+       self->motion = motion_line_start;
+
+       return GTK_SOURCE_VIM_STATE (self);
+}
+
+GtkSourceVimState *
+gtk_source_vim_motion_new_previous_line_end (void)
+{
+       GtkSourceVimMotion *self;
+
+       self = g_object_new (GTK_SOURCE_TYPE_VIM_MOTION, NULL);
+       self->motion = motion_prev_line_end;
+
+       return GTK_SOURCE_VIM_STATE (self);
+}
+
 GtkSourceVimState *
 gtk_source_vim_motion_new_none (void)
 {
diff --git a/gtksourceview/vim/gtk-source-vim-motion.h b/gtksourceview/vim/gtk-source-vim-motion.h
index 3ba06684..127cad96 100644
--- a/gtksourceview/vim/gtk-source-vim-motion.h
+++ b/gtksourceview/vim/gtk-source-vim-motion.h
@@ -31,13 +31,15 @@ G_BEGIN_DECLS
 
 G_DECLARE_FINAL_TYPE (GtkSourceVimMotion, gtk_source_vim_motion, GTK_SOURCE, VIM_MOTION, GtkSourceVimState)
 
-GtkSourceVimState *gtk_source_vim_motion_new                 (void);
-GtkSourceVimState *gtk_source_vim_motion_new_none            (void);
-GtkSourceVimState *gtk_source_vim_motion_new_first_char      (void);
-GtkSourceVimState *gtk_source_vim_motion_new_line_end        (void);
-void               gtk_source_vim_motion_set_apply_on_leave  (GtkSourceVimMotion *self,
-                                                              gboolean            apply_on_leave);
-gboolean           gtk_source_vim_motion_apply               (GtkSourceVimMotion *self,
-                                                              GtkTextIter        *iter);
+GtkSourceVimState *gtk_source_vim_motion_new                   (void);
+GtkSourceVimState *gtk_source_vim_motion_new_none              (void);
+GtkSourceVimState *gtk_source_vim_motion_new_first_char        (void);
+GtkSourceVimState *gtk_source_vim_motion_new_line_end          (void);
+GtkSourceVimState *gtk_source_vim_motion_new_previous_line_end (void);
+GtkSourceVimState *gtk_source_vim_motion_new_line_start        (void);
+void               gtk_source_vim_motion_set_apply_on_leave    (GtkSourceVimMotion *self,
+                                                                gboolean            apply_on_leave);
+gboolean           gtk_source_vim_motion_apply                 (GtkSourceVimMotion *self,
+                                                                GtkTextIter        *iter);
 
 G_END_DECLS