mirror of
https://github.com/matrix-construct/construct
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72 lines
2.2 KiB
C
72 lines
2.2 KiB
C
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// Matrix Construct
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//
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// Copyright (C) Matrix Construct Developers, Authors & Contributors
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// Copyright (C) 2016-2023 Jason Volk <jason@zemos.net>
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//
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// Permission to use, copy, modify, and/or distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice is present in all copies. The
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// full license for this software is available in the LICENSE file.
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#pragma once
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#define HAVE_IRCD_JSON_STACK_ARRAY_H
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/// stack::array is constructed under the scope of either a stack::member,
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/// or a stack::array, or a stack itself. stack::object and stack::array
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/// can be constructed directly under its scope, but not stack::member.
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///
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/// The same behavior as described by stack::object documentation applies
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/// here translated to arrays.
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///
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struct ircd::json::stack::array
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{
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member m; ///< optional internal member
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stack *s {nullptr}; ///< root stack ref
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member *pm {nullptr}; ///< parent member (if value of one)
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array *pa {nullptr}; ///< parent array (if value in one)
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object *co {nullptr}; ///< current child object
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array *ca {nullptr}; ///< current child array
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size_t vc {0}; ///< values witnessed (monotonic)
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void _pre_append();
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void _post_append();
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public:
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template<class... T> void append(const json::tuple<T...> &);
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void append(const json::value &);
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array(member &pm); ///< Array is value of the named member
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array(array &pa); ///< Array is value in the array
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array(object &po, const string_view &name);
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array(stack &s, const string_view &name);
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array(stack &s);
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array(const array &) = delete;
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array(array &&) noexcept;
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~array() noexcept;
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static const array &top(const stack &);
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static array &top(stack &);
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};
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template<class... T>
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inline void
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ircd::json::stack::array::append(const json::tuple<T...> &t)
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{
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_pre_append();
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const unwind post{[this]
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{
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_post_append();
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}};
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s->append(serialized(t), [&t](mutable_buffer buf)
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{
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return ircd::size(stringify(buf, t));
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});
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}
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inline void
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ircd::json::stack::array::_post_append()
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{
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++vc;
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}
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