[gnome-builder] buffer: add helper to get symbols for current document

[Christian Hergert <chergert src gnome org>]

commit efffab2324fb12195d70783cb71aef99234d5cf2
Author: Christian Hergert <christian hergert me>
Date:   Sun Mar 29 00:57:17 2015 -0700

    buffer: add helper to get symbols for current document

 libide/ide-buffer.c |   72 +++++++++++++++++++++++++++++++++++++++++++++++++++
 libide/ide-buffer.h |    7 +++++
 2 files changed, 79 insertions(+), 0 deletions(-)
---
diff --git a/libide/ide-buffer.c b/libide/ide-buffer.c
index 8bfdbb7..6bce698 100644
--- a/libide/ide-buffer.c
+++ b/libide/ide-buffer.c
@@ -1805,3 +1805,75 @@ ide_buffer_get_symbol_at_location_finish (IdeBuffer     *self,
 
   return g_task_propagate_pointer (task, error);
 }
+
+static void
+ide_buffer__symbol_provider_get_symbols_cb (GObject      *object,
+                                            GAsyncResult *result,
+                                            gpointer      user_data)
+{
+  IdeSymbolResolver *symbol_resolver = (IdeSymbolResolver *)object;
+  g_autoptr(GPtrArray) symbols = NULL;
+  g_autoptr(GTask) task = user_data;
+  GError *error = NULL;
+
+  g_assert (G_IS_TASK (task));
+
+  symbols = ide_symbol_resolver_get_symbols_finish (symbol_resolver, result, &error);
+
+  if (symbols == NULL)
+    {
+      g_task_return_error (task, error);
+      return;
+    }
+
+  g_task_return_pointer (task, g_ptr_array_ref (symbols), (GDestroyNotify)g_ptr_array_unref);
+}
+
+void
+ide_buffer_get_symbols_async (IdeBuffer           *self,
+                              GCancellable        *cancellable,
+                              GAsyncReadyCallback  callback,
+                              gpointer             user_data)
+{
+  IdeBufferPrivate *priv = ide_buffer_get_instance_private (self);
+  g_autoptr(GTask) task = NULL;
+
+  g_return_if_fail (IDE_IS_BUFFER (self));
+  g_return_if_fail (!cancellable || G_IS_CANCELLABLE (cancellable));
+
+  task = g_task_new (self, cancellable, callback, user_data);
+
+  if (priv->symbol_resolver == NULL)
+    {
+      g_task_return_new_error (task,
+                               G_IO_ERROR,
+                               G_IO_ERROR_NOT_SUPPORTED,
+                               _("Symbol resolver is not supported."));
+      return;
+    }
+
+  ide_symbol_resolver_get_symbols_async (priv->symbol_resolver,
+                                         priv->file,
+                                         cancellable,
+                                         ide_buffer__symbol_provider_get_symbols_cb,
+                                         g_object_ref (task));
+}
+
+/**
+ * ide_buffer_get_symbols_finish:
+ *
+ * Returns: (transfer container) (element-type IdeSymbol*): A #GPtrArray if successful;
+ *   otherwise %NULL.
+ */
+GPtrArray *
+ide_buffer_get_symbols_finish (IdeBuffer     *self,
+                               GAsyncResult  *result,
+                               GError       **error)
+{
+  GTask *task = (GTask *)result;
+
+  g_return_val_if_fail (IDE_IS_BUFFER (self), NULL);
+  g_return_val_if_fail (G_IS_TASK (task), NULL);
+
+  return g_task_propagate_pointer (task, error);
+}
diff --git a/libide/ide-buffer.h b/libide/ide-buffer.h
index 0ba2105..1f3637e 100644
--- a/libide/ide-buffer.h
+++ b/libide/ide-buffer.h
@@ -97,6 +97,13 @@ void                ide_buffer_get_symbol_at_location_async  (IdeBuffer
 IdeSymbol          *ide_buffer_get_symbol_at_location_finish (IdeBuffer            *self,
                                                               GAsyncResult         *result,
                                                               GError              **error);
+void                ide_buffer_get_symbols_async             (IdeBuffer            *self,
+                                                              GCancellable         *cancellable,
+                                                              GAsyncReadyCallback   callback,
+                                                              gpointer              user_data);
+GPtrArray          *ide_buffer_get_symbols_finish            (IdeBuffer            *self,
+                                                              GAsyncResult         *result,
+                                                              GError              **error);
 
 G_END_DECLS