[gnome-builder] code: add ide_diagnostics_get_diagnostics_at_line()

[Christian Hergert <chergert src gnome org>]

commit 2610902596a141c5a128a8821eac313e2abc7f34
Author: Günther Wagner <info gunibert de>
Date:   Mon Jun 29 22:13:53 2020 +0200

    code: add ide_diagnostics_get_diagnostics_at_line()

 src/libide/code/ide-diagnostics.c | 48 +++++++++++++++++++++++++++++++++++++++
 src/libide/code/ide-diagnostics.h | 46 ++++++++++++++++++++-----------------
 2 files changed, 73 insertions(+), 21 deletions(-)
---
diff --git a/src/libide/code/ide-diagnostics.c b/src/libide/code/ide-diagnostics.c
index 0bb462465..ec430b5ee 100644
--- a/src/libide/code/ide-diagnostics.c
+++ b/src/libide/code/ide-diagnostics.c
@@ -482,6 +482,54 @@ ide_diagnostics_get_diagnostic_at_line (IdeDiagnostics *self,
   return NULL;
 }
 
+/**
+ * ide_diagnostics_get_diagnostics_at_line:
+ * @self: a #IdeDiagnostics
+ * @file: the target file
+ * @line: a line number
+ *
+ * Locates all #IdeDiagnostic in @file at @line.
+ *
+ * Returns: (transfer full) (element-type IdeDiagnostic) (nullable): an #GPtrArray or %NULL
+ *
+ * Since: 3.38
+ */
+GPtrArray *
+ide_diagnostics_get_diagnostics_at_line (IdeDiagnostics *self,
+                                         GFile          *file,
+                                         guint           line)
+{
+  IdeDiagnosticsPrivate *priv = ide_diagnostics_get_instance_private (self);
+  g_autoptr(GPtrArray) valid_diag = NULL;
+
+  g_return_val_if_fail (IDE_IS_DIAGNOSTICS (self), NULL);
+  g_return_val_if_fail (G_IS_FILE (file), NULL);
+
+  valid_diag = g_ptr_array_new_with_free_func (g_object_unref);
+
+  for (guint i = 0; i < priv->items->len; i++)
+    {
+      IdeDiagnostic *diag = g_ptr_array_index (priv->items, i);
+      IdeLocation *loc = ide_diagnostic_get_location (diag);
+      GFile *loc_file;
+      guint loc_line;
+
+      if (loc == NULL)
+        continue;
+
+      loc_file = ide_location_get_file (loc);
+      loc_line = ide_location_get_line (loc);
+
+      if (loc_line == line && g_file_equal (file, loc_file))
+        g_ptr_array_add (valid_diag, g_object_ref(diag));
+    }
+
+  if (valid_diag->len != 0)
+    return IDE_PTR_ARRAY_STEAL_FULL (&valid_diag);
+
+  return NULL;
+}
+
 /**
  * ide_diagnostics_new_from_array:
  * @array: (nullable) (element-type IdeDiagnostic): optional array
diff --git a/src/libide/code/ide-diagnostics.h b/src/libide/code/ide-diagnostics.h
index 5fbc47d97..40041d103 100644
--- a/src/libide/code/ide-diagnostics.h
+++ b/src/libide/code/ide-diagnostics.h
@@ -60,37 +60,41 @@ struct _IdeDiagnosticsClass
 };
 
 IDE_AVAILABLE_IN_3_32
-IdeDiagnostics *ide_diagnostics_new                    (void);
+IdeDiagnostics *ide_diagnostics_new                     (void);
 IDE_AVAILABLE_IN_3_32
-IdeDiagnostics *ide_diagnostics_new_from_array         (GPtrArray                  *array);
+IdeDiagnostics *ide_diagnostics_new_from_array          (GPtrArray                  *array);
 IDE_AVAILABLE_IN_3_32
-void            ide_diagnostics_add                    (IdeDiagnostics             *self,
-                                                        IdeDiagnostic              *diagnostic);
+void            ide_diagnostics_add                     (IdeDiagnostics             *self,
+                                                         IdeDiagnostic              *diagnostic);
 IDE_AVAILABLE_IN_3_32
-void            ide_diagnostics_take                   (IdeDiagnostics             *self,
-                                                        IdeDiagnostic              *diagnostic);
+void            ide_diagnostics_take                    (IdeDiagnostics             *self,
+                                                         IdeDiagnostic              *diagnostic);
 IDE_AVAILABLE_IN_3_32
-void            ide_diagnostics_merge                  (IdeDiagnostics             *self,
-                                                        IdeDiagnostics             *other);
+void            ide_diagnostics_merge                   (IdeDiagnostics             *self,
+                                                         IdeDiagnostics             *other);
 IDE_AVAILABLE_IN_3_32
-guint           ide_diagnostics_get_n_errors           (IdeDiagnostics             *self);
+guint           ide_diagnostics_get_n_errors            (IdeDiagnostics             *self);
 IDE_AVAILABLE_IN_3_32
-gboolean        ide_diagnostics_get_has_errors         (IdeDiagnostics             *self);
+gboolean        ide_diagnostics_get_has_errors          (IdeDiagnostics             *self);
 IDE_AVAILABLE_IN_3_32
-guint           ide_diagnostics_get_n_warnings         (IdeDiagnostics             *self);
+guint           ide_diagnostics_get_n_warnings          (IdeDiagnostics             *self);
 IDE_AVAILABLE_IN_3_32
-gboolean        ide_diagnostics_get_has_warnings       (IdeDiagnostics             *self);
+gboolean        ide_diagnostics_get_has_warnings        (IdeDiagnostics             *self);
 IDE_AVAILABLE_IN_3_32
-void            ide_diagnostics_foreach_line_in_range  (IdeDiagnostics             *self,
-                                                        GFile                      *file,
-                                                        guint                       begin_line,
-                                                        guint                       end_line,
-                                                        IdeDiagnosticsLineCallback  callback,
-                                                        gpointer                    user_data);
+void            ide_diagnostics_foreach_line_in_range   (IdeDiagnostics             *self,
+                                                         GFile                      *file,
+                                                         guint                       begin_line,
+                                                         guint                       end_line,
+                                                         IdeDiagnosticsLineCallback  callback,
+                                                         gpointer                    user_data);
 IDE_AVAILABLE_IN_3_32
-IdeDiagnostic  *ide_diagnostics_get_diagnostic_at_line (IdeDiagnostics             *self,
-                                                        GFile                      *file,
-                                                        guint                       line);
+IdeDiagnostic  *ide_diagnostics_get_diagnostic_at_line  (IdeDiagnostics             *self,
+                                                         GFile                      *file,
+                                                         guint                       line);
+IDE_AVAILABLE_IN_3_38
+GPtrArray      *ide_diagnostics_get_diagnostics_at_line (IdeDiagnostics             *self,
+                                                         GFile                      *file,
+                                                         guint                       line);
 
 #define ide_diagnostics_get_size(d) ((gsize)g_list_model_get_n_items(G_LIST_MODEL(d)))