scanner: support "since" attribute for enum entries

This was already in the DTD but not supported by the scanner.

The check for ever-increasing "since" tags is not strictly required for enum
entries as we control the binary value. But it keeps the xml file in
good order, preventing things like:

      <entry name="first" value="…" />
      <entry name="second" value="…" since="3"/>
      <entry name="third" value="…" since="2"/>
      <entry name="fourth" value="…" since="3"/>

If this is undesirable in the future the check can be removed without
side-effects.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>

1 files changed, 23 insertions, 0 deletions

diff --git a/tests/data/small-server-core.h b/tests/data/small-server-core.h
index c1e8d05..6dd2d05 100644
--- a/tests/data/small-server-core.h
+++ b/tests/data/small-server-core.h
@@ -64,6 +64,29 @@ struct intf_not_here;
  */
 extern const struct wl_interface intf_A_interface;
 
+#ifndef INTF_A_FOO_ENUM
+#define INTF_A_FOO_ENUM
+enum intf_A_foo {
+	/**
+	 * this is the first
+	 */
+	INTF_A_FOO_FIRST = 0,
+	/**
+	 * this is the second
+	 */
+	INTF_A_FOO_SECOND = 1,
+	/**
+	 * this is the third
+	 * @since 2
+	 */
+	INTF_A_FOO_THIRD = 2,
+};
+/**
+ * @ingroup iface_intf_A
+ */
+#define INTF_A_FOO_THIRD_SINCE_VERSION 2
+#endif /* INTF_A_FOO_ENUM */
+
 /**
  * @ingroup iface_intf_A
  * @struct intf_A_interface