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+/*
+ * Input Visitor
+ *
+ * Copyright (C) 2017 Red Hat, Inc.
+ * Copyright IBM, Corp. 2011
+ *
+ * Authors:
+ * Anthony Liguori <aliguori@us.ibm.com>
+ *
+ * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
+ * See the COPYING.LIB file in the top-level directory.
+ *
+ */
+
+#ifndef QOBJECT_INPUT_VISITOR_H
+#define QOBJECT_INPUT_VISITOR_H
+
+#include "qapi/visitor.h"
+
+typedef struct QObjectInputVisitor QObjectInputVisitor;
+
+/*
+ * Create a QObject input visitor for @obj
+ *
+ * A QObject input visitor visit builds a QAPI object from a QObject.
+ * This simultaneously walks the QAPI object being built and the
+ * QObject. The latter walk starts at @obj.
+ *
+ * visit_type_FOO() creates an instance of QAPI type FOO. The visited
+ * QObject must match FOO. QDict matches struct/union types, QList
+ * matches list types, QString matches type 'str' and enumeration
+ * types, QNum matches integer and float types, QBool matches type
+ * 'bool'. Type 'any' is matched by QObject. A QAPI alternate type
+ * is matched when one of its member types is.
+ *
+ * visit_start_struct() ... visit_end_struct() visits a QDict and
+ * creates a QAPI struct/union. Visits in between visit the
+ * dictionary members. visit_optional() is true when the QDict has
+ * this member. visit_check_struct() fails if unvisited members
+ * remain.
+ *
+ * visit_start_list() ... visit_end_list() visits a QList and creates
+ * a QAPI list. Visits in between visit list members, one after the
+ * other. visit_next_list() returns NULL when all QList members have
+ * been visited. visit_check_list() fails if unvisited members
+ * remain.
+ *
+ * visit_start_alternate() ... visit_end_alternate() visits a QObject
+ * and creates a QAPI alternate. The visit in between visits the same
+ * QObject and initializes the alternate member that is in use.
+ *
+ * Error messages refer to parts of @obj in JavaScript/Python syntax.
+ * For example, 'a.b[2]' refers to the second member of the QList
+ * member 'b' of the QDict member 'a' of QDict @obj.
+ *
+ * The caller is responsible for freeing the visitor with
+ * visit_free().
+ */
+Visitor *qobject_input_visitor_new(QObject *obj);
+
+/*
+ * Create a QObject input visitor for @obj for use with keyval_parse()
+ *
+ * This is like qobject_input_visitor_new(), except scalars are all
+ * QString, and error messages refer to parts of @obj in the syntax
+ * keyval_parse() uses for KEYs.
+ */
+Visitor *qobject_input_visitor_new_keyval(QObject *obj);
+
+/*
+ * Create a QObject input visitor for parsing @str.
+ *
+ * If @str looks like JSON, parse it as JSON, else as KEY=VALUE,...
+ * @implied_key applies to KEY=VALUE, and works as in keyval_parse().
+ * On failure, store an error through @errp and return NULL.
+ * On success, return a new QObject input visitor for the parse.
+ */
+Visitor *qobject_input_visitor_new_str(const char *str,
+ const char *implied_key,
+ Error **errp);
+
+#endif