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-rw-r--r--schema/op-mode-definition.rnc35
1 files changed, 30 insertions, 5 deletions
diff --git a/schema/op-mode-definition.rnc b/schema/op-mode-definition.rnc
index ad41700b9..c10cf0431 100644
--- a/schema/op-mode-definition.rnc
+++ b/schema/op-mode-definition.rnc
@@ -1,6 +1,6 @@
# interface_definition.rnc: VyConf reference tree XML grammar
#
-# Copyright (C) 2014. 2017 VyOS maintainers and contributors <maintainers@vyos.net>
+# Copyright VyOS maintainers and contributors <maintainers@vyos.io>
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
@@ -37,12 +37,35 @@ node = element node
}
# Tag nodes are containers for nodes without predefined names, like network interfaces
-# or user names (e.g. "interfaces ethernet eth0" or "user jrandomhacker")
-# Tag nodes may contain node and leafNode elements, and also nameConstraint tags
-# They must not contain other tag nodes
+# or user names (e.g. "show interfaces ethernet ethX").
+# Operational mode tag nodes can be parents to other tag nodes,
+# like in "ping <host> count <packets>".
+#
+# Some commands can be called either with or without arguments,
+# like "show interfaces ethernet eth0" (show info for eth0 only)
+# or "show interfaces ethernet" (show info about all ethernet interfaces).
+# That case is handled using the <standalone> element
tagNode = element tagNode
{
nodeNameAttr,
+ (properties? & standalone? & children? & command?)
+}
+
+# The <standalone> element is only used inside tag nodes
+# to define their behavior when they are called without arguments
+# It can provide a help string and a command.
+# Everything else is handled in the <tagNode> itself.
+standalone = element standalone
+{
+ help & command
+}
+
+# Virtual tag nodes provide a way to add a variable argument
+# to a command that also needs fixed arguments,
+# like "show ip route" that can take "show ip route bgp"
+# or a network and arguments after it, like "show ip route 10.0.0.0/8 longer-prefixes"
+virtualTagNode = element virtualTagNode
+{
(properties? & children? & command?)
}
@@ -55,9 +78,11 @@ leafNode = element leafNode
(command & properties)
}
-# Normal and tag nodes may have children
+# Normal and tag nodes may have children: nodes, leaf nodes, or tag nodes.
+# There can only be one virtual tag node child, though.
children = element children
{
+ (virtualTagNode? & (node | tagNode | leafNode)*) |
(node | tagNode | leafNode)+
}