From d4c7e636a98323c1d88ab6936318d4052117dc10 Mon Sep 17 00:00:00 2001
From: Georg Brandl <georg@python.org>
Date: Wed, 23 Jul 2008 15:17:09 +0000
Subject: Move opcode handling to Python's extension.

---
 Doc/tools/sphinxext/pyspecific.py | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/Doc/tools/sphinxext/pyspecific.py b/Doc/tools/sphinxext/pyspecific.py
index 568a6a1..9a8b897 100644
--- a/Doc/tools/sphinxext/pyspecific.py
+++ b/Doc/tools/sphinxext/pyspecific.py
@@ -85,6 +85,28 @@ class PydocTopicsBuilder(Builder):
             f.close()
 
 
+# Support for documenting Opcodes
+
+import re
+from sphinx import addnodes
+
+opcode_sig_re = re.compile(r'(\w+(?:\+\d)?)\s*\((.*)\)')
+
+def parse_opcode_signature(env, sig, signode):
+    """Transform an opcode signature into RST nodes."""
+    m = opcode_sig_re.match(sig)
+    if m is None:
+        raise ValueError
+    opname, arglist = m.groups()
+    signode += addnodes.desc_name(opname, opname)
+    paramlist = addnodes.desc_parameterlist()
+    signode += paramlist
+    paramlist += addnodes.desc_parameter(arglist, arglist)
+    return opname.strip()
+
+
 def setup(app):
     app.add_role('issue', issue_role)
     app.add_builder(PydocTopicsBuilder)
+    app.add_description_unit('opcode', 'opcode', '%s (opcode)',
+                             parse_opcode_signature)
-- 
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