[gnome-builder] auto-indent: add helpers to peek prev/next char

[Christian Hergert <chergert src gnome org>]

commit 1e839a96ccdd24860fa5bc53ed8e3ad12d1f6cf3
Author: Christian Hergert <christian hergert me>
Date:   Thu Oct 16 19:48:04 2014 -0700

    auto-indent: add helpers to peek prev/next char

 src/auto-indent/gb-source-auto-indenter-c.c |   22 ++++++++++++++++++++++
 1 files changed, 22 insertions(+), 0 deletions(-)
---
diff --git a/src/auto-indent/gb-source-auto-indenter-c.c b/src/auto-indent/gb-source-auto-indenter-c.c
index ef278eb..1e93aa8 100644
--- a/src/auto-indent/gb-source-auto-indenter-c.c
+++ b/src/auto-indent/gb-source-auto-indenter-c.c
@@ -73,6 +73,28 @@ gb_source_auto_indenter_c_new (void)
   return g_object_new (GB_TYPE_SOURCE_AUTO_INDENTER_C, NULL);
 }
 
+static gunichar
+text_iter_peek_next_char (const GtkTextIter *location)
+{
+  GtkTextIter iter = *location;
+
+  if (gtk_text_iter_forward_char (&iter))
+    return gtk_text_iter_get_char (&iter);
+
+  return 0;
+}
+
+static gunichar
+text_iter_peek_prev_char (const GtkTextIter *location)
+{
+  GtkTextIter iter = *location;
+
+  if (gtk_text_iter_backward_char (&iter))
+    return gtk_text_iter_get_char (&iter);
+
+  return 0;
+}
+
 static inline void
 build_indent (GbSourceAutoIndenterC *c,
               guint                  line_offset,