[gnome-builder] wip-on-c-pack

[Christian Hergert <chergert src gnome org>]

commit d99e5a8f64f4b78521b563eef651f41da9911427
Author: Christian Hergert <chergert redhat com>
Date:   Mon Jun 18 16:18:46 2018 -0700

    wip-on-c-pack

 src/plugins/c-pack/c-pack-plugin.c             |   2 +
 src/plugins/c-pack/c-pack.plugin               |   4 +-
 src/plugins/c-pack/cpack-completion-provider.c | 194 +++++++++++++++++++++++++
 src/plugins/c-pack/cpack-completion-provider.h |  29 ++++
 src/plugins/c-pack/meson.build                 |   1 +
 5 files changed, 228 insertions(+), 2 deletions(-)
---
diff --git a/src/plugins/c-pack/c-pack-plugin.c b/src/plugins/c-pack/c-pack-plugin.c
index 8781e934f..5836e3e00 100644
--- a/src/plugins/c-pack/c-pack-plugin.c
+++ b/src/plugins/c-pack/c-pack-plugin.c
@@ -19,6 +19,7 @@
 #include <libpeas/peas.h>
 
 #include "ide-c-indenter.h"
+#include "cpack-completion-provider.h"
 #include "cpack-editor-view-addin.h"
 
 void
@@ -26,4 +27,5 @@ ide_c_pack_register_types (PeasObjectModule *module)
 {
   peas_object_module_register_extension_type (module, IDE_TYPE_INDENTER, IDE_TYPE_C_INDENTER);
   peas_object_module_register_extension_type (module, IDE_TYPE_EDITOR_VIEW_ADDIN, 
CPACK_TYPE_EDITOR_VIEW_ADDIN);
+  peas_object_module_register_extension_type (module, IDE_TYPE_COMPLETION_PROVIDER, 
CPACK_TYPE_COMPLETION_PROVIDER);
 }
diff --git a/src/plugins/c-pack/c-pack.plugin b/src/plugins/c-pack/c-pack.plugin
index 7441e493e..ac3ca1b4a 100644
--- a/src/plugins/c-pack/c-pack.plugin
+++ b/src/plugins/c-pack/c-pack.plugin
@@ -7,6 +7,6 @@ Copyright=Copyright © 2015 Christian Hergert
 Builtin=true
 X-Indenter-Languages=c,chdr
 X-Indenter-Languages-Priority=0
-X-Completion-Provider-Languages=c,chdr
-X-Completion-Provider-Languages-Priority=0
+X-Completion-Provider-Languages=c,chdr,cpp,cpphdr
+X-Completion-Provider-Languages-Priority=5000
 Embedded=ide_c_pack_register_types
diff --git a/src/plugins/c-pack/cpack-completion-provider.c b/src/plugins/c-pack/cpack-completion-provider.c
new file mode 100644
index 000000000..330d67d85
--- /dev/null
+++ b/src/plugins/c-pack/cpack-completion-provider.c
@@ -0,0 +1,194 @@
+/* cpack-completion-provider.c
+ *
+ * Copyright 2018 Christian Hergert <chergert redhat com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#define G_LOG_DOMAIN "cpack-completion-provider"
+
+#include "cpack-completion-provider.h"
+
+struct _CpackCompletionProvider
+{
+  IdeObject parent_instance;
+};
+
+static void provider_iface_init (IdeCompletionProviderInterface *iface);
+
+G_DEFINE_TYPE_WITH_CODE (CpackCompletionProvider, cpack_completion_provider, IDE_TYPE_OBJECT,
+                         G_IMPLEMENT_INTERFACE (IDE_TYPE_COMPLETION_PROVIDER, provider_iface_init))
+
+static void
+cpack_completion_provider_finalize (GObject *object)
+{
+  G_OBJECT_CLASS (cpack_completion_provider_parent_class)->finalize (object);
+}
+
+static void
+cpack_completion_provider_class_init (CpackCompletionProviderClass *klass)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+  object_class->finalize = cpack_completion_provider_finalize;
+}
+
+static void
+cpack_completion_provider_init (CpackCompletionProvider *self)
+{
+}
+
+static void
+cpack_completion_provider_get_build_flags_cb (GObject      *object,
+                                              GAsyncResult *result,
+                                              gpointer      user_data)
+{
+  IdeBuffer *buffer = (IdeBuffer *)object;
+  g_autoptr(IdeTask) task = user_data;
+  g_autoptr(GError) error = NULL;
+  g_auto(GStrv) build_flags = NULL;
+
+  g_assert (IDE_IS_BUFFER (buffer));
+  g_assert (G_IS_ASYNC_RESULT (result));
+  g_assert (IDE_IS_TASK (task));
+
+  if (!(build_flags = ide_buffer_get_build_flags_finish (buffer, result, &error)))
+    {
+      if (error != NULL)
+        ide_task_return_error (task, g_steal_pointer (&error));
+      else
+        ide_task_return_new_error (task,
+                                   G_IO_ERROR,
+                                   G_IO_ERROR_NOT_SUPPORTED,
+                                   "No build flags, no results to propagate");
+      return;
+    }
+
+  /* TODO: Find directories */
+}
+
+static void
+cpack_completion_provider_populate_async (IdeCompletionProvider *provider,
+                                          IdeCompletionContext  *context,
+                                          GCancellable          *cancellable,
+                                          GAsyncReadyCallback    callback,
+                                          gpointer               user_data)
+{
+  g_autoptr(IdeTask) task = NULL;
+  GtkTextIter begin, end;
+  GtkTextBuffer *buffer;
+
+  g_assert (CPACK_IS_COMPLETION_PROVIDER (provider));
+  g_assert (IDE_IS_COMPLETION_CONTEXT (context));
+  g_assert (!cancellable || G_IS_CANCELLABLE (cancellable));
+
+  task = ide_task_new (provider, cancellable, callback, user_data);
+  ide_task_set_source_tag (task, cpack_completion_provider_populate_async);
+
+  ide_completion_context_get_bounds (context, &begin, &end);
+
+  buffer = ide_completion_context_get_buffer (context);
+
+  if (gtk_source_buffer_iter_has_context_class (GTK_SOURCE_BUFFER (buffer), &begin, "path"))
+    {
+      GtkTextIter cur = begin;
+
+      while (gtk_text_iter_backward_char (&cur))
+        {
+          gunichar ch = gtk_text_iter_get_char (&cur);
+
+          if (ch == '"' || ch == '<')
+            {
+              gtk_text_iter_forward_char (&cur);
+              break;
+            }
+        }
+
+      goto query_filesystem;
+    }
+
+  ide_task_return_new_error (task,
+                             G_IO_ERROR,
+                             G_IO_ERROR_NOT_SUPPORTED,
+                             "Cannot complete includes here");
+  return;
+
+query_filesystem:
+
+  g_assert (IDE_IS_BUFFER (buffer));
+
+  /*
+   * First step is to get our list of include paths from the CFLAGS for the
+   * file. After that, we can start looking for matches on the file-system
+   * related to the current word.
+   */
+
+  ide_buffer_get_build_flags_async (IDE_BUFFER (buffer),
+                                    cancellable,
+                                    cpack_completion_provider_get_build_flags_cb,
+                                    g_steal_pointer (&task));
+}
+
+static GListModel *
+cpack_completion_provider_populate_finish (IdeCompletionProvider  *self,
+                                           GAsyncResult           *result,
+                                           GError                **error)
+{
+  g_assert (CPACK_IS_COMPLETION_PROVIDER (self));
+  g_assert (IDE_IS_TASK (result));
+
+  return ide_task_propagate_object (IDE_TASK (result), error);
+}
+
+static void
+cpack_completion_provider_display_proposal (IdeCompletionProvider   *provider,
+                                            IdeCompletionListBoxRow *row,
+                                            IdeCompletionContext    *context,
+                                            const gchar             *typed_text,
+                                            IdeCompletionProposal   *proposal)
+{
+  g_assert (CPACK_IS_COMPLETION_PROVIDER (provider));
+  g_assert (IDE_IS_COMPLETION_LIST_BOX_ROW (row));
+  g_assert (IDE_IS_COMPLETION_CONTEXT (context));
+  g_assert (IDE_IS_COMPLETION_PROPOSAL (proposal));
+
+  ide_completion_list_box_row_set_icon_name (row, "lang-include-symbolic");
+  ide_completion_list_box_row_set_left (row, NULL);
+  ide_completion_list_box_row_set_center (row, "some-include.h");
+  ide_completion_list_box_row_set_right (row, NULL);
+}
+
+static void
+cpack_completion_provider_activate_proposal (IdeCompletionProvider *provider,
+                                             IdeCompletionContext  *context,
+                                             IdeCompletionProposal *proposal,
+                                             const GdkEventKey     *key)
+{
+  g_assert (CPACK_IS_COMPLETION_PROVIDER (provider));
+  g_assert (IDE_IS_COMPLETION_CONTEXT (context));
+  g_assert (IDE_IS_COMPLETION_PROPOSAL (proposal));
+
+  g_print ("Activate proposal\n");
+}
+
+static void
+provider_iface_init (IdeCompletionProviderInterface *iface)
+{
+  iface->populate_async = cpack_completion_provider_populate_async;
+  iface->populate_finish = cpack_completion_provider_populate_finish;
+  iface->display_proposal = cpack_completion_provider_display_proposal;
+  iface->activate_proposal = cpack_completion_provider_activate_proposal;
+}
diff --git a/src/plugins/c-pack/cpack-completion-provider.h b/src/plugins/c-pack/cpack-completion-provider.h
new file mode 100644
index 000000000..fa2097fab
--- /dev/null
+++ b/src/plugins/c-pack/cpack-completion-provider.h
@@ -0,0 +1,29 @@
+/* cpack-completion-provider.h
+ *
+ * Copyright 2018 Christian Hergert <chergert redhat com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <ide.h>
+
+G_BEGIN_DECLS
+
+#define CPACK_TYPE_COMPLETION_PROVIDER (cpack_completion_provider_get_type())
+
+G_DECLARE_FINAL_TYPE (CpackCompletionProvider, cpack_completion_provider, CPACK, COMPLETION_PROVIDER, 
IdeObject)
+
+G_END_DECLS
diff --git a/src/plugins/c-pack/meson.build b/src/plugins/c-pack/meson.build
index 60c0bb833..d58560237 100644
--- a/src/plugins/c-pack/meson.build
+++ b/src/plugins/c-pack/meson.build
@@ -11,6 +11,7 @@ c_pack_sources = [
   'c-parse-helper.c',
   'hdr-format.c',
   'ide-c-indenter.c',
+  'cpack-completion-provider.c',
   'cpack-editor-view-addin.c',
 ]