[gnome-builder] Enabled Ctrl+Click on headers.

[Sébastien Lafargue <slafargue src gnome org>]

commit caba9f2e0d220cbd284987883d88d32af7cd42f4
Author: Debarshi <debarshi dutta research iiit ac in>
Date:   Tue Mar 22 04:23:06 2016 +0530

    Enabled Ctrl+Click on headers.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=763271

 libide/ide-source-view.c                   |   54 +++++++++++++++++++++++++--
 libide/ide-symbol.h                        |    1 +
 plugins/clang/ide-clang-translation-unit.c |   25 +++++++++++++
 3 files changed, 76 insertions(+), 4 deletions(-)
---
diff --git a/libide/ide-source-view.c b/libide/ide-source-view.c
index 796ccfc..ef57459 100644
--- a/libide/ide-source-view.c
+++ b/libide/ide-source-view.c
@@ -69,6 +69,8 @@
 #include "ide-text-util.h"
 #include "ide-workbench-private.h"
 
+#define INCLUDE_STATEMENTS "^#include[\\s]+[\\\"\\<][^\\s\\\"\\\'\\<\\>[:cntrl:]]+[\\\"\\>]"
+
 #define DEFAULT_FONT_DESC "Monospace 11"
 #define ANIMATION_X_GROW 50
 #define ANIMATION_Y_GROW 30
@@ -178,6 +180,8 @@ typedef struct
   guint                        snippet_completion : 1;
   guint                        waiting_for_capture : 1;
   gint                         overscroll_num_lines;
+
+  GRegex                       *include_regex;
 } IdeSourceViewPrivate;
 
 typedef struct
@@ -2530,9 +2534,8 @@ ide_source_get_word_from_iter (const GtkTextIter *iter,
   /* Just using forward/backward to word start/end is not enough
    * because _ break words when using those functions while they
    * are commonly used in the same word in code */
-
-  gtk_text_iter_assign (word_start, iter);
-  gtk_text_iter_assign (word_end, iter);
+  *word_start = *iter;
+  *word_end = *iter;
 
   do
     {
@@ -2558,7 +2561,7 @@ ide_source_get_word_from_iter (const GtkTextIter *iter,
         }
     }
 
-  return !gtk_text_iter_equal (word_start, word_end);
+  return (!gtk_text_iter_equal (word_start, word_end));
 }
 
 static void
@@ -2572,6 +2575,7 @@ ide_source_view_get_definition_on_mouse_over_cb (GObject      *object,
   g_autoptr(IdeSymbol) symbol = NULL;
   g_autoptr(GError) error = NULL;
   IdeSourceLocation *srcloc;
+  IdeSymbolKind kind;
 
   IDE_ENTRY;
 
@@ -2590,6 +2594,8 @@ ide_source_view_get_definition_on_mouse_over_cb (GObject      *object,
       IDE_EXIT;
     }
 
+  kind = ide_symbol_get_kind (symbol);
+
   srcloc = ide_symbol_get_definition_location (symbol);
 
   if (srcloc != NULL)
@@ -2609,6 +2615,39 @@ ide_source_view_get_definition_on_mouse_over_cb (GObject      *object,
       gtk_text_buffer_get_iter_at_mark (GTK_TEXT_BUFFER (buffer),
                                         &word_end, data->word_end_mark);
 
+      if (kind == IDE_SYMBOL_HEADER)
+        {
+          GtkTextIter line_start = word_start;
+          GtkTextIter line_end = word_end;
+          gint line_number;
+          g_autofree gchar* line_text = NULL;
+          g_autoptr (GMatchInfo) matchInfo = NULL;
+
+          line_number = gtk_text_iter_get_line(&word_start);
+
+          gtk_text_iter_set_line_offset (&line_start, 0);
+          gtk_text_iter_forward_to_line_end (&line_end);
+
+          line_text = gtk_text_iter_get_visible_text (&line_start,&line_end);
+
+          g_regex_match (priv->include_regex, line_text, 0, &matchInfo);
+
+          if (g_match_info_matches (matchInfo))
+            {
+              gint start_pos;
+              gint end_pos;
+              g_match_info_fetch_pos (matchInfo,
+                                      0,
+                                      &start_pos,
+                                      &end_pos);
+              word_start = line_start;
+              word_end   = line_start;
+
+              gtk_text_iter_set_line_index (&word_start, start_pos);
+              gtk_text_iter_set_line_index (&word_end, end_pos);
+            }
+        }
+
       gtk_text_buffer_apply_tag_by_name (GTK_TEXT_BUFFER (priv->buffer),
                                          TAG_DEFINITION, &word_start, &word_end);
 
@@ -5361,6 +5400,8 @@ ide_source_view_finalize (GObject *object)
   IdeSourceView *self = (IdeSourceView *)object;
   IdeSourceViewPrivate *priv = ide_source_view_get_instance_private (self);
 
+  g_regex_unref (priv->include_regex);
+
   g_clear_object (&priv->completion_providers_signals);
   g_clear_pointer (&priv->display_name, g_free);
   g_clear_pointer (&priv->font_desc, pango_font_description_free);
@@ -6426,6 +6467,11 @@ ide_source_view_init (IdeSourceView *self)
   GtkSourceCompletion *completion;
   GtkTargetList *target_list;
 
+  priv->include_regex = g_regex_new (INCLUDE_STATEMENTS,
+                                     G_REGEX_OPTIMIZE,
+                                     0,
+                                     NULL);
+
   EGG_COUNTER_INC (instances);
 
   priv->target_line_offset = -1;
diff --git a/libide/ide-symbol.h b/libide/ide-symbol.h
index c32be5e..61639e5 100644
--- a/libide/ide-symbol.h
+++ b/libide/ide-symbol.h
@@ -38,6 +38,7 @@ typedef enum
   IDE_SYMBOL_ENUM,
   IDE_SYMBOL_ENUM_VALUE,
   IDE_SYMBOL_VARIABLE,
+  IDE_SYMBOL_HEADER,
 } IdeSymbolKind;
 
 typedef enum
diff --git a/plugins/clang/ide-clang-translation-unit.c b/plugins/clang/ide-clang-translation-unit.c
index bba3c8c..78f8118 100644
--- a/plugins/clang/ide-clang-translation-unit.c
+++ b/plugins/clang/ide-clang-translation-unit.c
@@ -872,6 +872,10 @@ get_symbol_kind (CXCursor        cursor,
       kind = IDE_SYMBOL_FIELD;
       break;
 
+    case CXCursor_InclusionDirective:
+      kind = IDE_SYMBOL_HEADER;
+      break;
+
     default:
       break;
     }
@@ -949,6 +953,27 @@ ide_clang_translation_unit_lookup_symbol (IdeClangTranslationUnit  *self,
 
   symkind = get_symbol_kind (cursor, &symflags);
 
+  if (symkind == IDE_SYMBOL_HEADER)
+    {
+      CXFile included_file;
+      CXString included_file_name;
+
+      included_file = clang_getIncludedFile (cursor);
+      included_file_name = clang_getFileName (included_file);
+
+      gfile = g_file_new_for_path (clang_getCString (included_file_name));
+      file = g_object_new (IDE_TYPE_FILE,
+                           "context",
+                           context,
+                           "file",
+                           gfile,
+                           "path",
+                           clang_getCString (included_file_name),
+                           NULL);
+
+      definition = ide_source_location_new (file, 0, 0, 0);
+    }
+
   cxstr = clang_getCursorDisplayName (cursor);
   ret = ide_symbol_new (clang_getCString (cxstr), symkind, symflags,
                         declaration, definition, canonical);