-- Code generated by protoc-gen-tarantool. DO NOT EDIT.
-- source: c_nested.proto
-- syntax: proto3
-- package: c_nested

local pb = require("pb")
local wire = pb.wire
local string_byte = string.byte
local utf8_len = require('utf8').len
local band = bit.band
local rshift = bit.rshift
local CHARS = wire.CHARS
local table_new = require('table.new')

local M = {}

M.options = {go_package = "tarantoolpb_synthetic/c_nested"}

-- Pre-declare message descriptors so cross-references resolve.
M.L1_descriptor = {name = "c_nested.L1"}
M.L2_descriptor = {name = "c_nested.L2"}
M.L3_descriptor = {name = "c_nested.L3"}
M.L4_descriptor = {name = "c_nested.L4"}
M.L5_descriptor = {name = "c_nested.L5"}

-- Message: c_nested.L1
M.L1_descriptor.fields = {
    {name="next", id=1, kind='message', message=M.L2_descriptor},
    {name="v", id=2, kind='scalar', proto_type="int32"},
}
pb.finalize_message(M.L1_descriptor)
M.L1_fields = pb.field_names({
    next = "next",
    v = "v",
})

-- Message: c_nested.L2
M.L2_descriptor.fields = {
    {name="next", id=1, kind='message', message=M.L3_descriptor},
    {name="v", id=2, kind='scalar', proto_type="int32"},
}
pb.finalize_message(M.L2_descriptor)
M.L2_fields = pb.field_names({
    next = "next",
    v = "v",
})

-- Message: c_nested.L3
M.L3_descriptor.fields = {
    {name="next", id=1, kind='message', message=M.L4_descriptor},
    {name="v", id=2, kind='scalar', proto_type="int32"},
}
pb.finalize_message(M.L3_descriptor)
M.L3_fields = pb.field_names({
    next = "next",
    v = "v",
})

-- Message: c_nested.L4
M.L4_descriptor.fields = {
    {name="next", id=1, kind='message', message=M.L5_descriptor},
    {name="v", id=2, kind='scalar', proto_type="int32"},
}
pb.finalize_message(M.L4_descriptor)
M.L4_fields = pb.field_names({
    next = "next",
    v = "v",
})

-- Message: c_nested.L5
M.L5_descriptor.fields = {
    {name="v", id=2, kind='scalar', proto_type="int32"},
}
pb.finalize_message(M.L5_descriptor)
M.L5_fields = pb.field_names({
    v = "v",
})

-- EmmyLua / lua-language-server type annotations.
-- These are comments — no runtime effect. They give editors
-- autocomplete and type-checking for the generated wrappers.
--- 5-level chain of singular sub-messages. Used by the bd-hwe (ra6 3d)
--- C-runtime tests to verify recursion across non-trivial depth. Each
--- level carries an int32 so the encoded body at each level is
--- non-empty (catches off-by-one bugs in the length-prefix path).
---@class c_nested.L1
---@field next c_nested.L2
---@field v integer

---@class c_nested.L2
---@field next c_nested.L3
---@field v integer

---@class c_nested.L3
---@field next c_nested.L4
---@field v integer

---@class c_nested.L4
---@field next c_nested.L5
---@field v integer

---@class c_nested.L5
---@field v integer

---@param t? c_nested.L1
---@return c_nested.L1
function M.L1_new(t) return t or {} end

---@param t c_nested.L1
---@return string
function M.L1_encode(t)
    local _d = M.L1_descriptor
    if pb.c_runtime ~= nil then
        local _p = _d.c_plan or pb.c_runtime.compile_plan(_d)
        return pb.c_runtime.encode(_p, t)
    end
    if type(t) ~= 'table' then
        error("expected table for c_nested.L1, got " .. type(t), 0)
    end
    local out, n = {}, 0
    local v
    -- field 1: next
    v = t.next
    if v ~= nil or type(v) == 'cdata' then
        local _b = M.L2_encode(v)
        n = n + 1; out[n] = "\x0a"
        local _len = #_b
        if _len < 128 then
            n = n + 1; out[n] = CHARS[_len]
        else
            n = n + 1; out[n] = wire.encode_varint(_len)
        end
        n = n + 1; out[n] = _b
    end
    -- field 2: v
    v = t.v
    if v ~= nil and v ~= 0 then
        n = n + 1; out[n] = "\x10"
        n = n + 1; out[n] = wire.encode_int32(v)
    end
    local _uf = t._unknown_fields
    if _uf ~= nil and _uf ~= '' then n = n + 1; out[n] = _uf end
    return table.concat(out)
end

---@param b string
---@return c_nested.L1
function M.L1_decode(buf)
    local _d = M.L1_descriptor
    if pb.c_runtime ~= nil then
        local _p = _d.c_plan or pb.c_runtime.compile_plan(_d)
        return pb.c_runtime.decode(_p, buf)
    end
    if type(buf) ~= 'string' then
        error("expected string for c_nested.L1 decode, got " .. type(buf), 0)
    end
    local result = {}
    local pos, len = 1, #buf
    local _uf
    while pos <= len do
        local _tag_start = pos
        local id, wt
        local _b = string_byte(buf, pos)
        if _b ~= nil and _b < 0x80 then
            wt = band(_b, 7)
            if wt >= 6 then error("illegal wire type " .. wt, 0) end
            id = rshift(_b, 3)
            if id == 0 then error("illegal field number 0", 0) end
            pos = pos + 1
        else
            id, wt, pos = wire.decode_tag(buf, pos)
        end
        if id == 1 then
            local payload
            payload, pos = wire.decode_len(buf, pos)
            local prev = result.next
            if prev == nil then
                result.next = M.L2_decode(payload)
            else
                pb.codec.merge_message(M.L2_descriptor, prev, M.L2_decode(payload))
            end
        elseif id == 2 then
            local val
            val, pos = wire.decode_int32(buf, pos)
            result.v = val
        else
            local _ebid = M.L1_descriptor.extensions_by_id
            local _ext = _ebid and _ebid[id] or nil
            if _ext ~= nil then
                pos = pb.codec.decode_extension(_ext, buf, pos, wt, result)
            else
                pos = wire.skip_field(buf, pos, wt, id)
                if _uf == nil then _uf = {} end
                _uf[#_uf + 1] = buf:sub(_tag_start, pos - 1)
            end
        end
    end
    if _uf ~= nil then result._unknown_fields = table.concat(_uf) end
    return result
end

---@param b string
---@return pb.MessageView
function M.L1_decode_lazy(b) return pb.decode_lazy(M.L1_descriptor, b) end
---@param t c_nested.L1
---@param opts? {single_line: boolean?, indent: string?}
---@return string
function M.L1_text(t, opts) return pb.text.encode(M.L1_descriptor, t, opts) end

---@param t? c_nested.L2
---@return c_nested.L2
function M.L2_new(t) return t or {} end

---@param t c_nested.L2
---@return string
function M.L2_encode(t)
    local _d = M.L2_descriptor
    if pb.c_runtime ~= nil then
        local _p = _d.c_plan or pb.c_runtime.compile_plan(_d)
        return pb.c_runtime.encode(_p, t)
    end
    if type(t) ~= 'table' then
        error("expected table for c_nested.L2, got " .. type(t), 0)
    end
    local out, n = {}, 0
    local v
    -- field 1: next
    v = t.next
    if v ~= nil or type(v) == 'cdata' then
        local _b = M.L3_encode(v)
        n = n + 1; out[n] = "\x0a"
        local _len = #_b
        if _len < 128 then
            n = n + 1; out[n] = CHARS[_len]
        else
            n = n + 1; out[n] = wire.encode_varint(_len)
        end
        n = n + 1; out[n] = _b
    end
    -- field 2: v
    v = t.v
    if v ~= nil and v ~= 0 then
        n = n + 1; out[n] = "\x10"
        n = n + 1; out[n] = wire.encode_int32(v)
    end
    local _uf = t._unknown_fields
    if _uf ~= nil and _uf ~= '' then n = n + 1; out[n] = _uf end
    return table.concat(out)
end

---@param b string
---@return c_nested.L2
function M.L2_decode(buf)
    local _d = M.L2_descriptor
    if pb.c_runtime ~= nil then
        local _p = _d.c_plan or pb.c_runtime.compile_plan(_d)
        return pb.c_runtime.decode(_p, buf)
    end
    if type(buf) ~= 'string' then
        error("expected string for c_nested.L2 decode, got " .. type(buf), 0)
    end
    local result = {}
    local pos, len = 1, #buf
    local _uf
    while pos <= len do
        local _tag_start = pos
        local id, wt
        local _b = string_byte(buf, pos)
        if _b ~= nil and _b < 0x80 then
            wt = band(_b, 7)
            if wt >= 6 then error("illegal wire type " .. wt, 0) end
            id = rshift(_b, 3)
            if id == 0 then error("illegal field number 0", 0) end
            pos = pos + 1
        else
            id, wt, pos = wire.decode_tag(buf, pos)
        end
        if id == 1 then
            local payload
            payload, pos = wire.decode_len(buf, pos)
            local prev = result.next
            if prev == nil then
                result.next = M.L3_decode(payload)
            else
                pb.codec.merge_message(M.L3_descriptor, prev, M.L3_decode(payload))
            end
        elseif id == 2 then
            local val
            val, pos = wire.decode_int32(buf, pos)
            result.v = val
        else
            local _ebid = M.L2_descriptor.extensions_by_id
            local _ext = _ebid and _ebid[id] or nil
            if _ext ~= nil then
                pos = pb.codec.decode_extension(_ext, buf, pos, wt, result)
            else
                pos = wire.skip_field(buf, pos, wt, id)
                if _uf == nil then _uf = {} end
                _uf[#_uf + 1] = buf:sub(_tag_start, pos - 1)
            end
        end
    end
    if _uf ~= nil then result._unknown_fields = table.concat(_uf) end
    return result
end

---@param b string
---@return pb.MessageView
function M.L2_decode_lazy(b) return pb.decode_lazy(M.L2_descriptor, b) end
---@param t c_nested.L2
---@param opts? {single_line: boolean?, indent: string?}
---@return string
function M.L2_text(t, opts) return pb.text.encode(M.L2_descriptor, t, opts) end

---@param t? c_nested.L3
---@return c_nested.L3
function M.L3_new(t) return t or {} end

---@param t c_nested.L3
---@return string
function M.L3_encode(t)
    local _d = M.L3_descriptor
    if pb.c_runtime ~= nil then
        local _p = _d.c_plan or pb.c_runtime.compile_plan(_d)
        return pb.c_runtime.encode(_p, t)
    end
    if type(t) ~= 'table' then
        error("expected table for c_nested.L3, got " .. type(t), 0)
    end
    local out, n = {}, 0
    local v
    -- field 1: next
    v = t.next
    if v ~= nil or type(v) == 'cdata' then
        local _b = M.L4_encode(v)
        n = n + 1; out[n] = "\x0a"
        local _len = #_b
        if _len < 128 then
            n = n + 1; out[n] = CHARS[_len]
        else
            n = n + 1; out[n] = wire.encode_varint(_len)
        end
        n = n + 1; out[n] = _b
    end
    -- field 2: v
    v = t.v
    if v ~= nil and v ~= 0 then
        n = n + 1; out[n] = "\x10"
        n = n + 1; out[n] = wire.encode_int32(v)
    end
    local _uf = t._unknown_fields
    if _uf ~= nil and _uf ~= '' then n = n + 1; out[n] = _uf end
    return table.concat(out)
end

---@param b string
---@return c_nested.L3
function M.L3_decode(buf)
    local _d = M.L3_descriptor
    if pb.c_runtime ~= nil then
        local _p = _d.c_plan or pb.c_runtime.compile_plan(_d)
        return pb.c_runtime.decode(_p, buf)
    end
    if type(buf) ~= 'string' then
        error("expected string for c_nested.L3 decode, got " .. type(buf), 0)
    end
    local result = {}
    local pos, len = 1, #buf
    local _uf
    while pos <= len do
        local _tag_start = pos
        local id, wt
        local _b = string_byte(buf, pos)
        if _b ~= nil and _b < 0x80 then
            wt = band(_b, 7)
            if wt >= 6 then error("illegal wire type " .. wt, 0) end
            id = rshift(_b, 3)
            if id == 0 then error("illegal field number 0", 0) end
            pos = pos + 1
        else
            id, wt, pos = wire.decode_tag(buf, pos)
        end
        if id == 1 then
            local payload
            payload, pos = wire.decode_len(buf, pos)
            local prev = result.next
            if prev == nil then
                result.next = M.L4_decode(payload)
            else
                pb.codec.merge_message(M.L4_descriptor, prev, M.L4_decode(payload))
            end
        elseif id == 2 then
            local val
            val, pos = wire.decode_int32(buf, pos)
            result.v = val
        else
            local _ebid = M.L3_descriptor.extensions_by_id
            local _ext = _ebid and _ebid[id] or nil
            if _ext ~= nil then
                pos = pb.codec.decode_extension(_ext, buf, pos, wt, result)
            else
                pos = wire.skip_field(buf, pos, wt, id)
                if _uf == nil then _uf = {} end
                _uf[#_uf + 1] = buf:sub(_tag_start, pos - 1)
            end
        end
    end
    if _uf ~= nil then result._unknown_fields = table.concat(_uf) end
    return result
end

---@param b string
---@return pb.MessageView
function M.L3_decode_lazy(b) return pb.decode_lazy(M.L3_descriptor, b) end
---@param t c_nested.L3
---@param opts? {single_line: boolean?, indent: string?}
---@return string
function M.L3_text(t, opts) return pb.text.encode(M.L3_descriptor, t, opts) end

---@param t? c_nested.L4
---@return c_nested.L4
function M.L4_new(t) return t or {} end

---@param t c_nested.L4
---@return string
function M.L4_encode(t)
    local _d = M.L4_descriptor
    if pb.c_runtime ~= nil then
        local _p = _d.c_plan or pb.c_runtime.compile_plan(_d)
        return pb.c_runtime.encode(_p, t)
    end
    if type(t) ~= 'table' then
        error("expected table for c_nested.L4, got " .. type(t), 0)
    end
    local out, n = {}, 0
    local v
    -- field 1: next
    v = t.next
    if v ~= nil or type(v) == 'cdata' then
        local _b = M.L5_encode(v)
        n = n + 1; out[n] = "\x0a"
        local _len = #_b
        if _len < 128 then
            n = n + 1; out[n] = CHARS[_len]
        else
            n = n + 1; out[n] = wire.encode_varint(_len)
        end
        n = n + 1; out[n] = _b
    end
    -- field 2: v
    v = t.v
    if v ~= nil and v ~= 0 then
        n = n + 1; out[n] = "\x10"
        n = n + 1; out[n] = wire.encode_int32(v)
    end
    local _uf = t._unknown_fields
    if _uf ~= nil and _uf ~= '' then n = n + 1; out[n] = _uf end
    return table.concat(out)
end

---@param b string
---@return c_nested.L4
function M.L4_decode(buf)
    local _d = M.L4_descriptor
    if pb.c_runtime ~= nil then
        local _p = _d.c_plan or pb.c_runtime.compile_plan(_d)
        return pb.c_runtime.decode(_p, buf)
    end
    if type(buf) ~= 'string' then
        error("expected string for c_nested.L4 decode, got " .. type(buf), 0)
    end
    local result = {}
    local pos, len = 1, #buf
    local _uf
    while pos <= len do
        local _tag_start = pos
        local id, wt
        local _b = string_byte(buf, pos)
        if _b ~= nil and _b < 0x80 then
            wt = band(_b, 7)
            if wt >= 6 then error("illegal wire type " .. wt, 0) end
            id = rshift(_b, 3)
            if id == 0 then error("illegal field number 0", 0) end
            pos = pos + 1
        else
            id, wt, pos = wire.decode_tag(buf, pos)
        end
        if id == 1 then
            local payload
            payload, pos = wire.decode_len(buf, pos)
            local prev = result.next
            if prev == nil then
                result.next = M.L5_decode(payload)
            else
                pb.codec.merge_message(M.L5_descriptor, prev, M.L5_decode(payload))
            end
        elseif id == 2 then
            local val
            val, pos = wire.decode_int32(buf, pos)
            result.v = val
        else
            local _ebid = M.L4_descriptor.extensions_by_id
            local _ext = _ebid and _ebid[id] or nil
            if _ext ~= nil then
                pos = pb.codec.decode_extension(_ext, buf, pos, wt, result)
            else
                pos = wire.skip_field(buf, pos, wt, id)
                if _uf == nil then _uf = {} end
                _uf[#_uf + 1] = buf:sub(_tag_start, pos - 1)
            end
        end
    end
    if _uf ~= nil then result._unknown_fields = table.concat(_uf) end
    return result
end

---@param b string
---@return pb.MessageView
function M.L4_decode_lazy(b) return pb.decode_lazy(M.L4_descriptor, b) end
---@param t c_nested.L4
---@param opts? {single_line: boolean?, indent: string?}
---@return string
function M.L4_text(t, opts) return pb.text.encode(M.L4_descriptor, t, opts) end

---@param t? c_nested.L5
---@return c_nested.L5
function M.L5_new(t) return t or {} end

---@param t c_nested.L5
---@return string
function M.L5_encode(t)
    local _d = M.L5_descriptor
    if pb.c_runtime ~= nil then
        local _p = _d.c_plan or pb.c_runtime.compile_plan(_d)
        return pb.c_runtime.encode(_p, t)
    end
    if type(t) ~= 'table' then
        error("expected table for c_nested.L5, got " .. type(t), 0)
    end
    local out, n = {}, 0
    local v
    -- field 2: v
    v = t.v
    if v ~= nil and v ~= 0 then
        n = n + 1; out[n] = "\x10"
        n = n + 1; out[n] = wire.encode_int32(v)
    end
    local _uf = t._unknown_fields
    if _uf ~= nil and _uf ~= '' then n = n + 1; out[n] = _uf end
    return table.concat(out)
end

---@param b string
---@return c_nested.L5
function M.L5_decode(buf)
    local _d = M.L5_descriptor
    if pb.c_runtime ~= nil then
        local _p = _d.c_plan or pb.c_runtime.compile_plan(_d)
        return pb.c_runtime.decode(_p, buf)
    end
    if type(buf) ~= 'string' then
        error("expected string for c_nested.L5 decode, got " .. type(buf), 0)
    end
    local result = {}
    local pos, len = 1, #buf
    local _uf
    while pos <= len do
        local _tag_start = pos
        local id, wt
        local _b = string_byte(buf, pos)
        if _b ~= nil and _b < 0x80 then
            wt = band(_b, 7)
            if wt >= 6 then error("illegal wire type " .. wt, 0) end
            id = rshift(_b, 3)
            if id == 0 then error("illegal field number 0", 0) end
            pos = pos + 1
        else
            id, wt, pos = wire.decode_tag(buf, pos)
        end
        if id == 2 then
            local val
            val, pos = wire.decode_int32(buf, pos)
            result.v = val
        else
            local _ebid = M.L5_descriptor.extensions_by_id
            local _ext = _ebid and _ebid[id] or nil
            if _ext ~= nil then
                pos = pb.codec.decode_extension(_ext, buf, pos, wt, result)
            else
                pos = wire.skip_field(buf, pos, wt, id)
                if _uf == nil then _uf = {} end
                _uf[#_uf + 1] = buf:sub(_tag_start, pos - 1)
            end
        end
    end
    if _uf ~= nil then result._unknown_fields = table.concat(_uf) end
    return result
end

---@param b string
---@return pb.MessageView
function M.L5_decode_lazy(b) return pb.decode_lazy(M.L5_descriptor, b) end
---@param t c_nested.L5
---@param opts? {single_line: boolean?, indent: string?}
---@return string
function M.L5_text(t, opts) return pb.text.encode(M.L5_descriptor, t, opts) end

return M