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63 lines
2.2 KiB
C
63 lines
2.2 KiB
C
/*
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* Input Visitor
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*
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* Copyright (C) 2017 Red Hat, Inc.
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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_INPUT_VISITOR_H
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#define QMP_INPUT_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 QObjectInputVisitor QObjectInputVisitor;
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/*
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* Create a QObject input visitor for @obj
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*
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* A QObject input visitor visit builds a QAPI object from a QObject.
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* This simultaneously walks the QAPI object being built and the
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* QObject. The latter walk starts at @obj.
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*
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* visit_type_FOO() creates an instance of QAPI type FOO. The visited
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* QObject must match FOO. QDict matches struct/union types, QList
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* matches list types, QString matches type 'str' and enumeration
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* types, QInt matches integer types, QFloat matches type 'number',
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* QBool matches type 'bool'. Type 'any' is matched by QObject. A
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* QAPI alternate type is matched when one of its member types is.
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*
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* visit_start_struct() ... visit_end_struct() visits a QDict and
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* creates a QAPI struct/union. Visits in between visit the
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* dictionary members. visit_optional() is true when the QDict has
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* this member. visit_check_struct() fails if unvisited members
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* remain.
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*
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* visit_start_list() ... visit_end_list() visits a QList and creates
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* a QAPI list. Visits in between visit list members, one after the
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* other. visit_next_list() returns NULL when all QList members have
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* been visited. visit_check_list() fails if unvisited members
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* remain.
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*
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* visit_start_alternate() ... visit_end_alternate() visits a QObject
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* and creates a QAPI alternate. The visit in between visits the same
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* QObject and initializes the alternate member that is in use.
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*
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* Error messages refer to parts of @obj in JavaScript/Python syntax.
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* For example, 'a.b[2]' refers to the second member of the QList
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* member 'b' of the QDict member 'a' of QDict @obj.
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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_input_visitor_new(QObject *obj);
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#endif
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