[gtk/matthiasc/for-master: 6/11] cssshadowvalue: Add a parsing function

[Matthias Clasen <matthiasc src gnome org>]

commit be3f352b593e59cf5f784fb3929acacf09f4d9c0
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri Feb 5 21:36:22 2021 -0500

    cssshadowvalue: Add a parsing function
    
    Add a variant of the parse function that parses
    just a single (non-box) shadow, as required for
    the drop-shadow filter.

 gtk/gtkcssshadowvalue.c | 17 ++++++-----------
 1 file changed, 6 insertions(+), 11 deletions(-)
---
diff --git a/gtk/gtkcssshadowvalue.c b/gtk/gtkcssshadowvalue.c
index f4d60c9bcd..3afc9592a0 100644
--- a/gtk/gtkcssshadowvalue.c
+++ b/gtk/gtkcssshadowvalue.c
@@ -514,19 +514,14 @@ fail:
 }
 
 GtkCssValue *
-_gtk_css_shadow_value_parse_filter (GtkCssParser *parser)
+gtk_css_shadow_value_parse_filter (GtkCssParser *parser)
 {
-  GtkCssValue *result;
+  ShadowValue shadow;
 
-  result = _gtk_css_shadow_value_parse (parser, FALSE);
-
-  if (result && result->n_shadows != 1)
-    {
-      gtk_css_parser_error_syntax (parser, "A single shadow is required");
-      g_clear_pointer (&result, gtk_css_value_unref);
-    }
-
-  return result;
+  if (gtk_css_shadow_value_parse_one (parser, FALSE, &shadow))
+    return gtk_css_shadow_value_new (&shadow, 1);
+  else
+    return NULL;
 }
 
 void