qapidoc: introduce QAPISchemaIfCond.docgen()

Instead of building the condition documentation from a list of string,
use the result generated from QAPISchemaIfCond.docgen().

This changes the generated documentation from:
- COND1, COND2... (where COND1, COND2 are Literal nodes, and ',' is Text)
to:
- COND1 and COND2 (the whole string as a Literal node)

This will allow us to generate more complex conditions in the following
patches, such as "(COND1 and COND2) or COND3".

Adding back the differentiated formatting is left to the wish list.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20210804083105.97531-6-marcandre.lureau@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
[TODO comment added]
Signed-off-by: Markus Armbruster <armbru@redhat.com>

1 files changed, 8 insertions, 6 deletions

diff --git a/docs/sphinx/qapidoc.py b/docs/sphinx/qapidoc.py
index 511520f33f..d791b59492 100644
--- a/docs/sphinx/qapidoc.py
+++ b/docs/sphinx/qapidoc.py
@@ -112,17 +112,19 @@ class QAPISchemaGenRSTVisitor(QAPISchemaVisitor):
     def _nodes_for_ifcond(self, ifcond, with_if=True):
         """Return list of Text, literal nodes for the ifcond
 
-        Return a list which gives text like ' (If: cond1, cond2, cond3)', where
-        the conditions are in literal-text and the commas are not.
+        Return a list which gives text like ' (If: condition)'.
         If with_if is False, we don't return the "(If: " and ")".
         """
-        condlist = intersperse([nodes.literal('', c) for c in ifcond.ifcond],
-                               nodes.Text(', '))
+
+        doc = ifcond.docgen()
+        if not doc:
+            return []
+        doc = nodes.literal('', doc)
         if not with_if:
-            return condlist
+            return [doc]
 
         nodelist = [nodes.Text(' ('), nodes.strong('', 'If: ')]
-        nodelist.extend(condlist)
+        nodelist.append(doc)
         nodelist.append(nodes.Text(')'))
         return nodelist