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58 lines
1.9 KiB
C
58 lines
1.9 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 QMP_OUTPUT_VISITOR_H
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#define QMP_OUTPUT_VISITOR_H
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#include "qapi/visitor.h"
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#include "qapi/qmp/qobject.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, QInt for integer types, QFloat
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* for type 'number', QBool for type 'bool'. For type 'any', it
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* increments the QObject's reference count. For QAPI alternate
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* types, it creates 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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#endif
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