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From: Markus Armbruster <armbru@redhat.com>
To: qemu-devel@nongnu.org
Cc: marcandre.lureau@redhat.com, jsnow@redhat.com,
	ehabkost@redhat.com, crosa@redhat.com
Subject: [PATCH 06/11] qapi/gen: write _genc/_genh access shims
Date: Fri, 18 Dec 2020 21:54:02 +0100	[thread overview]
Message-ID: <20201218205407.1326907-7-armbru@redhat.com> (raw)
In-Reply-To: <20201218205407.1326907-1-armbru@redhat.com>

From: John Snow <jsnow@redhat.com>

Many places assume they can access these fields without checking them
first to ensure they are defined. Eliminating the _genc and _genh fields
and replacing them with functional properties that check for correct
state can ease the typing overhead by eliminating the Optional[T] return
type.

Signed-off-by: John Snow <jsnow@redhat.com>
Message-Id: <20201217015927.197287-9-jsnow@redhat.com>
---
 scripts/qapi/gen.py | 18 +++++++++++++-----
 1 file changed, 13 insertions(+), 5 deletions(-)

diff --git a/scripts/qapi/gen.py b/scripts/qapi/gen.py
index 476d0adac4..12ea98fb61 100644
--- a/scripts/qapi/gen.py
+++ b/scripts/qapi/gen.py
@@ -243,11 +243,20 @@ class QAPISchemaModularCVisitor(QAPISchemaVisitor):
         self._user_blurb = user_blurb
         self._builtin_blurb = builtin_blurb
         self._pydoc = pydoc
-        self._genc: Optional[QAPIGenC] = None
-        self._genh: Optional[QAPIGenH] = None
+        self._current_module: Optional[str] = None
         self._module: Dict[str, Tuple[QAPIGenC, QAPIGenH]] = {}
         self._main_module: Optional[str] = None
 
+    @property
+    def _genc(self) -> QAPIGenC:
+        assert self._current_module is not None
+        return self._module[self._current_module][0]
+
+    @property
+    def _genh(self) -> QAPIGenH:
+        assert self._current_module is not None
+        return self._module[self._current_module][1]
+
     @staticmethod
     def _is_user_module(name: str) -> bool:
         return not name.startswith('./')
@@ -282,7 +291,7 @@ class QAPISchemaModularCVisitor(QAPISchemaVisitor):
         genc = QAPIGenC(basename + '.c', blurb, self._pydoc)
         genh = QAPIGenH(basename + '.h', blurb, self._pydoc)
         self._module[name] = (genc, genh)
-        self._genc, self._genh = self._module[name]
+        self._current_module = name
 
     def _add_user_module(self, name: str, blurb: str) -> None:
         assert self._is_user_module(name)
@@ -315,8 +324,7 @@ class QAPISchemaModularCVisitor(QAPISchemaVisitor):
             else:
                 # The built-in module has not been created.  No code may
                 # be generated.
-                self._genc = None
-                self._genh = None
+                self._current_module = None
         else:
             self._add_user_module(name, self._user_blurb)
             self._begin_user_module(name)
-- 
2.26.2



  parent reply	other threads:[~2020-12-18 20:58 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-18 20:53 [PATCH 00/11] Drop support for QAPIGen without a file name Markus Armbruster
2020-12-18 20:53 ` [PATCH 01/11] qapi/commands: assert arg_type is not None Markus Armbruster
2020-12-18 20:53 ` [PATCH 02/11] qapi/events: fix visit_event typing Markus Armbruster
2020-12-18 20:53 ` [PATCH 03/11] qapi/main: handle theoretical None-return from re.match() Markus Armbruster
2020-12-18 20:54 ` [PATCH 04/11] qapi/gen: assert that _start_if is not None in _wrap_ifcond Markus Armbruster
2020-12-18 20:54 ` [PATCH 05/11] qapi/gen: use './builtin' for the built-in module name Markus Armbruster
2020-12-18 20:54 ` Markus Armbruster [this message]
2020-12-18 20:54 ` [PATCH 07/11] qapi/gen: Replace ._begin_system_module() Markus Armbruster
2020-12-18 20:54 ` [PATCH 08/11] qapi/gen: Expose a single module name space Markus Armbruster
2020-12-18 20:54 ` [PATCH 09/11] qapi/gen: Support for switching to another module temporarily Markus Armbruster
2021-01-15  2:07   ` John Snow
2020-12-18 20:54 ` [PATCH 10/11] qapi/commands: Simplify command registry generation Markus Armbruster
2021-01-15  2:15   ` John Snow
2020-12-18 20:54 ` [PATCH 11/11] qapi/gen: Drop support for QAPIGen without a file name Markus Armbruster

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