Parse all longhand properties that Servo seems to support.

parsing_utils.rs

@@ -0,0 +1,21 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+
+use std::ascii::to_ascii_lower;
+use cssparser::*;
+
+
+pub fn one_component_value<'a>(input: &'a [ComponentValue]) -> Option<&'a ComponentValue> {
+    let mut iter = input.skip_whitespace();
+    iter.next().filtered(|_| iter.next().is_none())
+}
+
+
+pub fn get_ident_lower(component_value: &ComponentValue) -> Option<~str> {
+    match component_value {
+        &Ident(ref value) => Some(to_ascii_lower(value.as_slice())),
+        _ => None,
+    }
+}