Generate tables of statements in doctree-read phase

This change allows us to generate "unresolved" references and let Sphinx
deal with dereferencing them in later stages. It is not useful by itself
but it serves as preparation for the next commit.

(cherry picked from commit b109c86805)

doc/arm/_ext/iscconf.py

@@ -429,7 +429,7 @@ def domain_factory(domainname, domainlabel, todolist, grammar):
                 )
 
         @classmethod
-        def process_statementlist_nodes(cls, app, doctree, fromdocname):
+        def process_statementlist_nodes(cls, app, doctree):
             """
             Replace todolist objects (placed into document using
             .. statementlist::) with automatically generated table
@@ -464,7 +464,7 @@ def domain_factory(domainname, domainlabel, todolist, grammar):
                                     )
                                 )
                             ),
-                            iscconf.list_all(fromdocname),
+                            iscconf.list_all(),
                         ),
                         key=lambda x: x["fullname"],
                     )
@@ -481,24 +481,24 @@ def domain_factory(domainname, domainlabel, todolist, grammar):
                     gen_replacement_table(acceptable_blocks, acceptable_tags)
                 )
 
-        def list_all(self, fromdocname):
+        def list_all(self):
             for statement in self.data["statements"].values():
+                sig = statement["signature"]
                 block_names = set(
-                    path[-1]
-                    for path in self.statement_blocks.get(statement["signature"], [])
+                    path[-1] for path in self.statement_blocks.get(sig, [])
                 )
                 tags_txt = ", ".join(statement["tags"])
 
                 refpara = nodes.inline()
-                refpara += self.resolve_xref(
-                    self.env,
-                    fromdocname,
-                    self.env.app.builder,
-                    None,
-                    statement["signature"],
-                    None,
-                    nodes.Text(statement["signature"]),
+                refnode = addnodes.pending_xref(
+                    sig,
+                    reftype="statement",
+                    refdomain=domainname,
+                    reftarget=sig,
+                    refwarn=True,
                 )
+                refnode += nodes.Text(sig)
+                refpara += refnode
 
                 copy = statement.copy()
                 copy["block_names"] = block_names
@@ -574,7 +574,7 @@ def setup(app, domainname, confname, docutilsplaceholder, grammar):
 
     Conf = domain_factory(domainname, confname, docutilsplaceholder, grammar)
     app.add_domain(Conf)
-    app.connect("doctree-resolved", Conf.process_statementlist_nodes)
+    app.connect("doctree-read", Conf.process_statementlist_nodes)
 
     return {
         "version": "0.1",