[gnome-builder] code: add gicon getter for symbol kind icons

[Christian Hergert <chergert src gnome org>]

commit f6fb2f3730300257948b04c54b2c55e791ff0482
Author: Christian Hergert <chergert redhat com>
Date:   Tue Jul 12 21:40:21 2022 -0700

    code: add gicon getter for symbol kind icons

 src/libide/code/ide-symbol.c | 33 +++++++++++++++++++++++++++++++++
 src/libide/code/ide-symbol.h |  4 +++-
 2 files changed, 36 insertions(+), 1 deletion(-)
---
diff --git a/src/libide/code/ide-symbol.c b/src/libide/code/ide-symbol.c
index 7991226f6..a7df53a9e 100644
--- a/src/libide/code/ide-symbol.c
+++ b/src/libide/code/ide-symbol.c
@@ -416,6 +416,39 @@ ide_symbol_kind_get_icon_name (IdeSymbolKind kind)
   return icon_name;
 }
 
+/**
+ * ide_symbol_kind_get_gicon:
+ * @kind: a #IdeSymbolKind
+ *
+ * Gets a #GIcon to represent the symbol kind.
+ *
+ * Returns: (transfer none) (nullable): a #GIcon or %NULL
+ */
+GIcon *
+ide_symbol_kind_get_gicon (IdeSymbolKind kind)
+{
+  const char *icon_name;
+  GIcon *ret = NULL;
+
+  if ((icon_name = ide_symbol_kind_get_icon_name (kind)))
+    {
+      static GHashTable *cached;
+
+      if (cached == NULL)
+        cached = g_hash_table_new (NULL, NULL);
+
+      ret = g_hash_table_lookup (cached, icon_name);
+
+      if (ret == NULL)
+        {
+          ret = g_themed_icon_new (icon_name);
+          g_hash_table_insert (cached, (char *)icon_name, ret);
+        }
+    }
+
+  return ret;
+}
+
 /**
  * ide_symbol_to_variant:
  * @self: a #IdeSymbol
diff --git a/src/libide/code/ide-symbol.h b/src/libide/code/ide-symbol.h
index cb3fa2f1b..20021bd45 100644
--- a/src/libide/code/ide-symbol.h
+++ b/src/libide/code/ide-symbol.h
@@ -131,6 +131,8 @@ IdeSymbol      *ide_symbol_new_from_variant    (GVariant       *variant);
 IDE_AVAILABLE_IN_ALL
 GVariant       *ide_symbol_to_variant          (IdeSymbol      *self);
 IDE_AVAILABLE_IN_ALL
-const gchar    *ide_symbol_kind_get_icon_name  (IdeSymbolKind   kind);
+const char     *ide_symbol_kind_get_icon_name  (IdeSymbolKind   kind);
+IDE_AVAILABLE_IN_ALL
+GIcon          *ide_symbol_kind_get_gicon      (IdeSymbolKind   kind);
 
 G_END_DECLS