91fa93e516
This policy suppresses deprecated bits in output, and thus permits
"testing the future". Implement it for QMP command results. Example:
when QEMU is run with -compat deprecated-output=hide, then
{"execute": "query-cpus-fast"}
yields
{"return": [{"thread-id": 9805, "props": {"core-id": 0, "thread-id": 0, "socket-id": 0}, "qom-path": "/machine/unattached/device[0]", "cpu-index": 0, "target": "x86_64"}]}
instead of
{"return": [{"arch": "x86", "thread-id": 22436, "props": {"core-id": 0, "thread-id": 0, "socket-id": 0}, "qom-path": "/machine/unattached/device[0]", "cpu-index": 0, "target": "x86_64"}]}
Note the suppression of deprecated member "arch".
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20210318155519.1224118-4-armbru@redhat.com>
61 lines
2 KiB
C
61 lines
2 KiB
C
/*
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* Output Visitor
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*
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* Copyright IBM, Corp. 2011
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*
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* Authors:
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* Anthony Liguori <aliguori@us.ibm.com>
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*
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* This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
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* See the COPYING.LIB file in the top-level directory.
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*
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*/
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#ifndef QOBJECT_OUTPUT_VISITOR_H
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#define QOBJECT_OUTPUT_VISITOR_H
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#include "qapi/visitor.h"
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#include "qapi/qapi-types-compat.h"
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typedef struct QObjectOutputVisitor QObjectOutputVisitor;
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/**
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* Create a QObject output visitor for @obj
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*
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* A QObject output visitor visit builds a QObject from QAPI Object.
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* This simultaneously walks the QAPI object and the QObject being
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* built. The latter walk starts at @obj.
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*
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* visit_type_FOO() creates a QObject for QAPI type FOO. It creates a
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* QDict for struct/union types, a QList for list types, QString for
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* type 'str' and enumeration types, QNum for integer and float
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* types, QBool for type 'bool'. For type 'any', it increments the
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* QObject's reference count. For QAPI alternate types, it creates
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* the QObject for the member that is in use.
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*
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* visit_start_struct() ... visit_end_struct() visits a QAPI
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* struct/union and creates a QDict. Visits in between visit the
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* members. visit_optional() is true when the struct/union has this
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* member. visit_check_struct() does nothing.
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*
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* visit_start_list() ... visit_end_list() visits a QAPI list and
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* creates a QList. Visits in between visit list members, one after
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* the other. visit_next_list() returns NULL when all QAPI list
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* members have been visited. visit_check_list() does nothing.
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*
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* visit_start_alternate() ... visit_end_alternate() visits a QAPI
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* alternate. The visit in between creates the QObject for the
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* alternate member that is in use.
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*
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* Errors are not expected to happen.
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*
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* The caller is responsible for freeing the visitor with
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* visit_free().
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*/
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Visitor *qobject_output_visitor_new(QObject **result);
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void qobject_output_visitor_set_policy(Visitor *v,
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CompatPolicyOutput deprecated);
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#endif
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