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[Qemu-devel] [PATCH v11 07/24] qapi-visit: Split off visit_type_FOO_fiel
From: |
Eric Blake |
Subject: |
[Qemu-devel] [PATCH v11 07/24] qapi-visit: Split off visit_type_FOO_fields forward decl |
Date: |
Mon, 26 Oct 2015 16:34:46 -0600 |
We generate a static visit_type_FOO_fields() for every type
FOO. However, sometimes we need a forward declaration. Split
the code to generate the forward declaration out of
gen_visit_implicit_struct() into a new gen_visit_fields_decl(),
and also prepare for a forward declaration to be emitted
during gen_visit_struct(), so that a future patch can switch
from using visit_type_FOO_implicit() to the simpler
visit_type_FOO_fields() as part of unboxing the base class
of a struct.
No change to generated code.
Signed-off-by: Eric Blake <address@hidden>
---
v11: drop dead hunks, simplify comment
v10: new patch, split from 5/17
---
scripts/qapi-visit.py | 26 ++++++++++++++++++--------
1 file changed, 18 insertions(+), 8 deletions(-)
diff --git a/scripts/qapi-visit.py b/scripts/qapi-visit.py
index 2dc3aed..d4408f2 100644
--- a/scripts/qapi-visit.py
+++ b/scripts/qapi-visit.py
@@ -15,7 +15,12 @@
from qapi import *
import re
+# visit_type_FOO_implicit() is emitted as needed; track if it has already
+# been output.
implicit_structs_seen = set()
+
+# visit_type_FOO_fields() is always emitted; track if a forward declaration
+# or implementation has already been output.
struct_fields_seen = set()
@@ -29,19 +34,24 @@ void visit_type_%(c_name)s(Visitor *v, %(c_type)sobj, const
char *name, Error **
c_name=c_name(name), c_type=c_type)
+def gen_visit_fields_decl(typ):
+ ret = ''
+ if typ.name not in struct_fields_seen:
+ ret += mcgen('''
+
+static void visit_type_%(c_type)s_fields(Visitor *v, %(c_type)s **obj, Error
**errp);
+''',
+ c_type=typ.c_name())
+ struct_fields_seen.add(typ.name)
+ return ret
+
+
def gen_visit_implicit_struct(typ):
if typ in implicit_structs_seen:
return ''
implicit_structs_seen.add(typ)
- ret = ''
- if typ.name not in struct_fields_seen:
- # Need a forward declaration
- ret += mcgen('''
-
-static void visit_type_%(c_type)s_fields(Visitor *v, %(c_type)s **obj, Error
**errp);
-''',
- c_type=typ.c_name())
+ ret = gen_visit_fields_decl(typ)
ret += mcgen('''
--
2.4.3
- [Qemu-devel] [PATCH v11 00/24] qapi collision reduction (post-introspection subset B'), Eric Blake, 2015/10/26
- [Qemu-devel] [PATCH v11 04/24] qapi: Reserve '*List' type names for list types, Eric Blake, 2015/10/26
- [Qemu-devel] [PATCH v11 07/24] qapi-visit: Split off visit_type_FOO_fields forward decl,
Eric Blake <=
- [Qemu-devel] [PATCH v11 01/24] tests/qapi-schema: Test for reserved names, empty struct, Eric Blake, 2015/10/26
- [Qemu-devel] [PATCH v11 05/24] qapi: Reserve 'q_*' and 'has_*' member names, Eric Blake, 2015/10/26
- [Qemu-devel] [PATCH v11 11/24] qapi-visit: Remove redundant functions for flat union base, Eric Blake, 2015/10/26
- [Qemu-devel] [PATCH v11 12/24] qapi: Start converting to new qapi union layout, Eric Blake, 2015/10/26
- [Qemu-devel] [PATCH v11 13/24] qapi-visit: Convert to new qapi union layout, Eric Blake, 2015/10/26
- [Qemu-devel] [PATCH v11 10/24] qapi: Unbox base members, Eric Blake, 2015/10/26
- [Qemu-devel] [PATCH v11 14/24] tests: Convert to new qapi union layout, Eric Blake, 2015/10/26
- [Qemu-devel] [PATCH v11 08/24] qapi-types: Refactor base fields output, Eric Blake, 2015/10/26