Move table -x-span outisde of mako

components/style/values/specified/table.rs

@@ -0,0 +1,27 @@
+/* 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/. */
+
+//! Specified types for table properties.
+
+use cssparser::Parser;
+use parser::{Parse, ParserContext};
+use std::fmt;
+use style_traits::{ToCss, StyleParseErrorKind, ParseError};
+
+#[derive(Clone, Copy, Debug, MallocSizeOf, PartialEq, ToComputedValue)]
+/// span. for `<col span>` pres attr
+pub struct XSpan(pub i32);
+
+impl Parse for XSpan {
+    // never parse it, only set via presentation attribute
+    fn parse<'i, 't>(_: &ParserContext, input: &mut Parser<'i, 't>) -> Result<XSpan, ParseError<'i>> {
+        Err(input.new_custom_error(StyleParseErrorKind::UnspecifiedError))
+    }
+}
+
+impl ToCss for XSpan {
+    fn to_css<W>(&self, _: &mut W) -> fmt::Result where W: fmt::Write {
+        Ok(())
+    }
+}