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

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 table_new = require('table.new')

local M = {}

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

-- Enum: hello.Status
M.Status_descriptor = pb.enum("hello.Status", {
    UNKNOWN = 0,
    OK = 1,
    ERROR = 2,
})
M.Status = M.Status_descriptor.by_name

-- Pre-declare message descriptors so cross-references resolve.
M.Result_descriptor = {name = "hello.Result"}
M.HelloRequest_descriptor = {name = "hello.HelloRequest"}
M.HelloReply_descriptor = {name = "hello.HelloReply"}
M.Event_descriptor = {name = "hello.Event"}
M.Address_descriptor = {name = "hello.Address"}
M.Person_descriptor = {name = "hello.Person"}

-- Message: hello.Result
M.Result_descriptor.fields = {
    {name="id", id=1, kind='scalar', proto_type="int32"},
    {name="text", id=2, kind='scalar', proto_type="string", oneof="outcome"},
    {name="code", id=3, kind='scalar', proto_type="int32", oneof="outcome"},
    {name="details", id=4, kind='message', message=M.Address_descriptor, oneof="outcome"},
}
M.Result_descriptor.oneofs = {
    outcome = {"text", "code", "details"},
}
pb.finalize_message(M.Result_descriptor)
M.Result_fields = pb.field_names({
    id = "id",
    text = "text",
    code = "code",
    details = "details",
})
M.Result_oneofs = pb.field_names({
    outcome = "outcome",
})

-- Message: hello.HelloRequest
M.HelloRequest_descriptor.fields = {
    {name="name", id=1, kind='scalar', proto_type="string"},
}
pb.finalize_message(M.HelloRequest_descriptor)
M.HelloRequest_fields = pb.field_names({
    name = "name",
})

-- Message: hello.HelloReply
M.HelloReply_descriptor.fields = {
    {name="greeting", id=1, kind='scalar', proto_type="string"},
}
pb.finalize_message(M.HelloReply_descriptor)
M.HelloReply_fields = pb.field_names({
    greeting = "greeting",
})

-- Message: hello.Event
M.Event_descriptor.fields = {
    {name="title", id=1, kind='scalar', proto_type="string"},
    {name="created_at", id=2, kind='message', message=pb.wkt.Timestamp_descriptor},
    {name="duration", id=3, kind='message', message=pb.wkt.Duration_descriptor},
    {name="ack", id=4, kind='message', message=pb.wkt.Empty_descriptor},
    {name="retry_count", id=5, kind='message', message=pb.wkt.Int32Value_descriptor},
    {name="note", id=6, kind='message', message=pb.wkt.StringValue_descriptor},
    {name="is_admin", id=7, kind='message', message=pb.wkt.BoolValue_descriptor},
    {name="payload", id=8, kind='message', message=pb.wkt.Struct_descriptor},
    {name="attribute", id=9, kind='message', message=pb.wkt.Value_descriptor},
    {name="tags", id=10, kind='message', message=pb.wkt.ListValue_descriptor},
    {name="extension", id=11, kind='message', message=pb.wkt.Any_descriptor},
    {name="update_mask", id=12, kind='message', message=pb.wkt.FieldMask_descriptor},
}
pb.finalize_message(M.Event_descriptor)
M.Event_fields = pb.field_names({
    title = "title",
    created_at = "created_at",
    duration = "duration",
    ack = "ack",
    retry_count = "retry_count",
    note = "note",
    is_admin = "is_admin",
    payload = "payload",
    attribute = "attribute",
    tags = "tags",
    extension = "extension",
    update_mask = "update_mask",
})

-- Message: hello.Address
M.Address_descriptor.fields = {
    {name="street", id=1, kind='scalar', proto_type="string"},
    {name="city", id=2, kind='scalar', proto_type="string"},
    {name="zip", id=3, kind='scalar', proto_type="int32"},
    {name="apartment", id=4, kind='scalar', proto_type="string", optional=true},
}
pb.finalize_message(M.Address_descriptor)
M.Address_fields = pb.field_names({
    street = "street",
    city = "city",
    zip = "zip",
    apartment = "apartment",
})

-- Message: hello.Person
M.Person_descriptor.fields = {
    {name="name", id=1, kind='scalar', proto_type="string"},
    {name="age", id=2, kind='scalar', proto_type="int32"},
    {name="emails", id=3, kind='scalar', proto_type="string", repeated=true},
    {name="status", id=4, kind='enum', enum=M.Status_descriptor},
    {name="address", id=5, kind='message', message=M.Address_descriptor},
    {name="friends", id=6, kind='message', message=M.Person_descriptor, repeated=true},
    {name="lucky_numbers", id=7, kind='scalar', proto_type="int32", repeated=true, packed=true},
    {name="avatar", id=8, kind='scalar', proto_type="bytes"},
    {name="user_id", id=9, kind='scalar', proto_type="fixed64"},
    {name="balance", id=10, kind='scalar', proto_type="sint32"},
    {name="weight_kg", id=11, kind='scalar', proto_type="double"},
    {name="ages_by_nickname", id=13, kind='map', key={kind='scalar', proto_type="string"}, value={kind='scalar', proto_type="int32"}},
    {name="nickname_by_age", id=14, kind='map', key={kind='scalar', proto_type="int32"}, value={kind='scalar', proto_type="string"}},
    {name="addresses_by_label", id=15, kind='map', key={kind='scalar', proto_type="string"}, value={kind='message', message=M.Address_descriptor}},
}
pb.finalize_message(M.Person_descriptor)
M.Person_fields = pb.field_names({
    name = "name",
    age = "age",
    emails = "emails",
    status = "status",
    address = "address",
    friends = "friends",
    lucky_numbers = "lucky_numbers",
    avatar = "avatar",
    user_id = "user_id",
    balance = "balance",
    weight_kg = "weight_kg",
    ages_by_nickname = "ages_by_nickname",
    nickname_by_age = "nickname_by_age",
    addresses_by_label = "addresses_by_label",
})

-- EmmyLua / lua-language-server type annotations.
-- These are comments — no runtime effect. They give editors
-- autocomplete and type-checking for the generated wrappers.
---@alias hello.Status integer

--- Demo message for oneof handling.
---@class hello.Result
---@field id integer
---@field text? string
---@field code? integer
---@field details? hello.Address

--- gRPC service demo. Covers unary + all three streaming flavors so the
--- loopback transport exercises every codegen branch.
---@class hello.HelloRequest
---@field name string

---@class hello.HelloReply
---@field greeting string

--- Demo message exercising well-known types (M3).
---@class hello.Event
---@field title string
---@field created_at google.protobuf.Timestamp
---@field duration google.protobuf.Duration
---@field ack google.protobuf.Empty
---@field retry_count google.protobuf.Int32Value
---@field note google.protobuf.StringValue
---@field is_admin google.protobuf.BoolValue
---@field payload google.protobuf.Struct
---@field attribute google.protobuf.Value
---@field tags google.protobuf.ListValue
---@field extension google.protobuf.Any
---@field update_mask google.protobuf.FieldMask

---@class hello.Address
---@field street string
---@field city string
---@field zip integer
---@field apartment? string @ Explicit-optional: presence is meaningful (distinct from default).

---@class hello.Person
---@field name string
---@field age integer
---@field emails string[]
---@field status hello.Status
---@field address hello.Address
---@field friends hello.Person[]
---@field lucky_numbers integer[]
---@field avatar string
---@field user_id integer
---@field balance integer
---@field weight_kg number
---@field ages_by_nickname table<string, integer> @ Map fields (M2)
---@field nickname_by_age table<integer, string>
---@field addresses_by_label table<string, hello.Address>

---@param t? hello.Result
---@return hello.Result
function M.Result_new(t) return t or {} end

---@param t hello.Result
---@return string
function M.Result_encode(t)
    local encode_int32 = wire.encode_int32
    local encode_varint = wire.encode_varint
    local _d = M.Result_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 hello.Result, got " .. type(t), 0)
    end
    local out, n = {}, 0
    local v
    local _of_outcome
    if t.text ~= nil then _of_outcome = "text" end
    if t.code ~= nil then _of_outcome = "code" end
    if t.details ~= nil then _of_outcome = "details" end
    -- field 1: id
    v = t.id
    if v ~= nil and v ~= 0 then
        n = n + 1; out[n] = "\x08"
        n = n + 1; out[n] = encode_int32(v)
    end
    -- field 2: text
    v = t.text
    if _of_outcome == "text" then
        n = n + 1; out[n] = "\x12"
        local _len = #v
        if _len < 128 then
            n = n + 1; out[n] = string.char(_len)
        else
            n = n + 1; out[n] = encode_varint(_len)
        end
        n = n + 1; out[n] = v
    end
    -- field 3: code
    v = t.code
    if _of_outcome == "code" then
        n = n + 1; out[n] = "\x18"
        n = n + 1; out[n] = encode_int32(v)
    end
    -- field 4: details
    v = t.details
    if _of_outcome == "details" then
        local _b = M.Address_encode(v)
        n = n + 1; out[n] = "\x22"
        local _len = #_b
        if _len < 128 then
            n = n + 1; out[n] = string.char(_len)
        else
            n = n + 1; out[n] = encode_varint(_len)
        end
        n = n + 1; out[n] = _b
    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 hello.Result
function M.Result_decode(buf)
    local decode_int32 = wire.decode_int32
    local _d = M.Result_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 hello.Result 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 val
            val, pos = decode_int32(buf, pos)
            result.id = val
        elseif id == 2 then
            local _lb = string_byte(buf, pos)
            if _lb ~= nil and _lb < 0x80 then
                local _np = pos + 1
                local _epos = _np + _lb
                if _epos - 1 > len then error("truncated LEN at offset " .. pos, 0) end
                local _s = buf:sub(_np, _epos - 1)
                if utf8_len(_s) == nil then error("invalid UTF-8 in string field at offset " .. pos, 0) end
                result.text = _s
                pos = _epos
            else
                local val
                val, pos = wire.decode_string(buf, pos)
                result.text = val
            end
            result.code = nil
            result.details = nil
        elseif id == 3 then
            local val
            val, pos = decode_int32(buf, pos)
            result.code = val
            result.text = nil
            result.details = nil
        elseif id == 4 then
            local payload
            payload, pos = wire.decode_len(buf, pos)
            local prev = result.details
            if prev == nil then
                result.details = M.Address_decode(payload)
            else
                pb.codec.merge_message(M.Address_descriptor, prev, M.Address_decode(payload))
            end
            result.text = nil
            result.code = nil
        else
            local _ebid = M.Result_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.Result_decode_lazy(b) return pb.decode_lazy(M.Result_descriptor, b) end
---@param t hello.Result
---@param opts? {single_line: boolean?, indent: string?}
---@return string
function M.Result_text(t, opts) return pb.text.encode(M.Result_descriptor, t, opts) end

---@param t? hello.HelloRequest
---@return hello.HelloRequest
function M.HelloRequest_new(t) return t or {} end

---@param t hello.HelloRequest
---@return string
function M.HelloRequest_encode(t)
    local _d = M.HelloRequest_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 hello.HelloRequest, got " .. type(t), 0)
    end
    local out, n = {}, 0
    local v
    -- field 1: name
    v = t.name
    if v ~= nil and v ~= '' then
        n = n + 1; out[n] = "\x0a"
        local _len = #v
        if _len < 128 then
            n = n + 1; out[n] = string.char(_len)
        else
            n = n + 1; out[n] = wire.encode_varint(_len)
        end
        n = n + 1; out[n] = 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 hello.HelloRequest
function M.HelloRequest_decode(buf)
    local _d = M.HelloRequest_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 hello.HelloRequest 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 _lb = string_byte(buf, pos)
            if _lb ~= nil and _lb < 0x80 then
                local _np = pos + 1
                local _epos = _np + _lb
                if _epos - 1 > len then error("truncated LEN at offset " .. pos, 0) end
                local _s = buf:sub(_np, _epos - 1)
                if utf8_len(_s) == nil then error("invalid UTF-8 in string field at offset " .. pos, 0) end
                result.name = _s
                pos = _epos
            else
                local val
                val, pos = wire.decode_string(buf, pos)
                result.name = val
            end
        else
            local _ebid = M.HelloRequest_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.HelloRequest_decode_lazy(b) return pb.decode_lazy(M.HelloRequest_descriptor, b) end
---@param t hello.HelloRequest
---@param opts? {single_line: boolean?, indent: string?}
---@return string
function M.HelloRequest_text(t, opts) return pb.text.encode(M.HelloRequest_descriptor, t, opts) end

---@param t? hello.HelloReply
---@return hello.HelloReply
function M.HelloReply_new(t) return t or {} end

---@param t hello.HelloReply
---@return string
function M.HelloReply_encode(t)
    local _d = M.HelloReply_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 hello.HelloReply, got " .. type(t), 0)
    end
    local out, n = {}, 0
    local v
    -- field 1: greeting
    v = t.greeting
    if v ~= nil and v ~= '' then
        n = n + 1; out[n] = "\x0a"
        local _len = #v
        if _len < 128 then
            n = n + 1; out[n] = string.char(_len)
        else
            n = n + 1; out[n] = wire.encode_varint(_len)
        end
        n = n + 1; out[n] = 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 hello.HelloReply
function M.HelloReply_decode(buf)
    local _d = M.HelloReply_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 hello.HelloReply 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 _lb = string_byte(buf, pos)
            if _lb ~= nil and _lb < 0x80 then
                local _np = pos + 1
                local _epos = _np + _lb
                if _epos - 1 > len then error("truncated LEN at offset " .. pos, 0) end
                local _s = buf:sub(_np, _epos - 1)
                if utf8_len(_s) == nil then error("invalid UTF-8 in string field at offset " .. pos, 0) end
                result.greeting = _s
                pos = _epos
            else
                local val
                val, pos = wire.decode_string(buf, pos)
                result.greeting = val
            end
        else
            local _ebid = M.HelloReply_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.HelloReply_decode_lazy(b) return pb.decode_lazy(M.HelloReply_descriptor, b) end
---@param t hello.HelloReply
---@param opts? {single_line: boolean?, indent: string?}
---@return string
function M.HelloReply_text(t, opts) return pb.text.encode(M.HelloReply_descriptor, t, opts) end

---@param t? hello.Event
---@return hello.Event
function M.Event_new(t) return t or {} end

---@param t hello.Event
---@return string
function M.Event_encode(t)
    local encode_varint = wire.encode_varint
    local _d = M.Event_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 hello.Event, got " .. type(t), 0)
    end
    local out, n = {}, 0
    local v
    -- field 1: title
    v = t.title
    if v ~= nil and v ~= '' then
        n = n + 1; out[n] = "\x0a"
        local _len = #v
        if _len < 128 then
            n = n + 1; out[n] = string.char(_len)
        else
            n = n + 1; out[n] = encode_varint(_len)
        end
        n = n + 1; out[n] = v
    end
    -- field 2: created_at
    v = t.created_at
    if v ~= nil or type(v) == 'cdata' then
        local _b = pb.wkt.Timestamp_encode(v)
        n = n + 1; out[n] = "\x12"
        local _len = #_b
        if _len < 128 then
            n = n + 1; out[n] = string.char(_len)
        else
            n = n + 1; out[n] = encode_varint(_len)
        end
        n = n + 1; out[n] = _b
    end
    -- field 3: duration
    v = t.duration
    if v ~= nil or type(v) == 'cdata' then
        local _b = pb.wkt.Duration_encode(v)
        n = n + 1; out[n] = "\x1a"
        local _len = #_b
        if _len < 128 then
            n = n + 1; out[n] = string.char(_len)
        else
            n = n + 1; out[n] = encode_varint(_len)
        end
        n = n + 1; out[n] = _b
    end
    -- field 4: ack
    v = t.ack
    if v ~= nil or type(v) == 'cdata' then
        local _b = pb.wkt.Empty_encode(v)
        n = n + 1; out[n] = "\x22"
        local _len = #_b
        if _len < 128 then
            n = n + 1; out[n] = string.char(_len)
        else
            n = n + 1; out[n] = encode_varint(_len)
        end
        n = n + 1; out[n] = _b
    end
    -- field 5: retry_count
    v = t.retry_count
    if v ~= nil or type(v) == 'cdata' then
        local _b = pb.wkt.Int32Value_encode(v)
        n = n + 1; out[n] = "\x2a"
        local _len = #_b
        if _len < 128 then
            n = n + 1; out[n] = string.char(_len)
        else
            n = n + 1; out[n] = encode_varint(_len)
        end
        n = n + 1; out[n] = _b
    end
    -- field 6: note
    v = t.note
    if v ~= nil or type(v) == 'cdata' then
        local _b = pb.wkt.StringValue_encode(v)
        n = n + 1; out[n] = "\x32"
        local _len = #_b
        if _len < 128 then
            n = n + 1; out[n] = string.char(_len)
        else
            n = n + 1; out[n] = encode_varint(_len)
        end
        n = n + 1; out[n] = _b
    end
    -- field 7: is_admin
    v = t.is_admin
    if v ~= nil or type(v) == 'cdata' then
        local _b = pb.wkt.BoolValue_encode(v)
        n = n + 1; out[n] = "\x3a"
        local _len = #_b
        if _len < 128 then
            n = n + 1; out[n] = string.char(_len)
        else
            n = n + 1; out[n] = encode_varint(_len)
        end
        n = n + 1; out[n] = _b
    end
    -- field 8: payload
    v = t.payload
    if v ~= nil or type(v) == 'cdata' then
        local _b = pb.wkt.Struct_encode(v)
        n = n + 1; out[n] = "\x42"
        local _len = #_b
        if _len < 128 then
            n = n + 1; out[n] = string.char(_len)
        else
            n = n + 1; out[n] = encode_varint(_len)
        end
        n = n + 1; out[n] = _b
    end
    -- field 9: attribute
    v = t.attribute
    if v ~= nil or type(v) == 'cdata' then
        local _b = pb.wkt.Value_encode(v)
        n = n + 1; out[n] = "\x4a"
        local _len = #_b
        if _len < 128 then
            n = n + 1; out[n] = string.char(_len)
        else
            n = n + 1; out[n] = encode_varint(_len)
        end
        n = n + 1; out[n] = _b
    end
    -- field 10: tags
    v = t.tags
    if v ~= nil or type(v) == 'cdata' then
        local _b = pb.wkt.ListValue_encode(v)
        n = n + 1; out[n] = "\x52"
        local _len = #_b
        if _len < 128 then
            n = n + 1; out[n] = string.char(_len)
        else
            n = n + 1; out[n] = encode_varint(_len)
        end
        n = n + 1; out[n] = _b
    end
    -- field 11: extension
    v = t.extension
    if v ~= nil or type(v) == 'cdata' then
        local _b = pb.wkt.Any_encode(v)
        n = n + 1; out[n] = "\x5a"
        local _len = #_b
        if _len < 128 then
            n = n + 1; out[n] = string.char(_len)
        else
            n = n + 1; out[n] = encode_varint(_len)
        end
        n = n + 1; out[n] = _b
    end
    -- field 12: update_mask
    v = t.update_mask
    if v ~= nil or type(v) == 'cdata' then
        local _b = pb.wkt.FieldMask_encode(v)
        n = n + 1; out[n] = "\x62"
        local _len = #_b
        if _len < 128 then
            n = n + 1; out[n] = string.char(_len)
        else
            n = n + 1; out[n] = encode_varint(_len)
        end
        n = n + 1; out[n] = _b
    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 hello.Event
function M.Event_decode(buf)
    local decode_len = wire.decode_len
    local _d = M.Event_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 hello.Event 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 _lb = string_byte(buf, pos)
            if _lb ~= nil and _lb < 0x80 then
                local _np = pos + 1
                local _epos = _np + _lb
                if _epos - 1 > len then error("truncated LEN at offset " .. pos, 0) end
                local _s = buf:sub(_np, _epos - 1)
                if utf8_len(_s) == nil then error("invalid UTF-8 in string field at offset " .. pos, 0) end
                result.title = _s
                pos = _epos
            else
                local val
                val, pos = wire.decode_string(buf, pos)
                result.title = val
            end
        elseif id == 2 then
            local payload
            payload, pos = decode_len(buf, pos)
            result.created_at = pb.wkt.Timestamp_decode(payload)
        elseif id == 3 then
            local payload
            payload, pos = decode_len(buf, pos)
            result.duration = pb.wkt.Duration_decode(payload)
        elseif id == 4 then
            local payload
            payload, pos = decode_len(buf, pos)
            result.ack = pb.wkt.Empty_decode(payload)
        elseif id == 5 then
            local payload
            payload, pos = decode_len(buf, pos)
            result.retry_count = pb.wkt.Int32Value_decode(payload)
        elseif id == 6 then
            local payload
            payload, pos = decode_len(buf, pos)
            result.note = pb.wkt.StringValue_decode(payload)
        elseif id == 7 then
            local payload
            payload, pos = decode_len(buf, pos)
            result.is_admin = pb.wkt.BoolValue_decode(payload)
        elseif id == 8 then
            local payload
            payload, pos = decode_len(buf, pos)
            result.payload = pb.wkt.Struct_decode(payload)
        elseif id == 9 then
            local payload
            payload, pos = decode_len(buf, pos)
            result.attribute = pb.wkt.Value_decode(payload)
        elseif id == 10 then
            local payload
            payload, pos = decode_len(buf, pos)
            result.tags = pb.wkt.ListValue_decode(payload)
        elseif id == 11 then
            local payload
            payload, pos = decode_len(buf, pos)
            result.extension = pb.wkt.Any_decode(payload)
        elseif id == 12 then
            local payload
            payload, pos = decode_len(buf, pos)
            result.update_mask = pb.wkt.FieldMask_decode(payload)
        else
            local _ebid = M.Event_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.Event_decode_lazy(b) return pb.decode_lazy(M.Event_descriptor, b) end
---@param t hello.Event
---@param opts? {single_line: boolean?, indent: string?}
---@return string
function M.Event_text(t, opts) return pb.text.encode(M.Event_descriptor, t, opts) end

---@param t? hello.Address
---@return hello.Address
function M.Address_new(t) return t or {} end

---@param t hello.Address
---@return string
function M.Address_encode(t)
    local encode_varint = wire.encode_varint
    local _d = M.Address_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 hello.Address, got " .. type(t), 0)
    end
    local out, n = {}, 0
    local v
    -- field 1: street
    v = t.street
    if v ~= nil and v ~= '' then
        n = n + 1; out[n] = "\x0a"
        local _len = #v
        if _len < 128 then
            n = n + 1; out[n] = string.char(_len)
        else
            n = n + 1; out[n] = encode_varint(_len)
        end
        n = n + 1; out[n] = v
    end
    -- field 2: city
    v = t.city
    if v ~= nil and v ~= '' then
        n = n + 1; out[n] = "\x12"
        local _len = #v
        if _len < 128 then
            n = n + 1; out[n] = string.char(_len)
        else
            n = n + 1; out[n] = encode_varint(_len)
        end
        n = n + 1; out[n] = v
    end
    -- field 3: zip
    v = t.zip
    if v ~= nil and v ~= 0 then
        n = n + 1; out[n] = "\x18"
        n = n + 1; out[n] = wire.encode_int32(v)
    end
    -- field 4: apartment
    v = t.apartment
    if v ~= nil then
        n = n + 1; out[n] = "\x22"
        local _len = #v
        if _len < 128 then
            n = n + 1; out[n] = string.char(_len)
        else
            n = n + 1; out[n] = encode_varint(_len)
        end
        n = n + 1; out[n] = 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 hello.Address
function M.Address_decode(buf)
    local decode_string = wire.decode_string
    local _d = M.Address_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 hello.Address 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 _lb = string_byte(buf, pos)
            if _lb ~= nil and _lb < 0x80 then
                local _np = pos + 1
                local _epos = _np + _lb
                if _epos - 1 > len then error("truncated LEN at offset " .. pos, 0) end
                local _s = buf:sub(_np, _epos - 1)
                if utf8_len(_s) == nil then error("invalid UTF-8 in string field at offset " .. pos, 0) end
                result.street = _s
                pos = _epos
            else
                local val
                val, pos = decode_string(buf, pos)
                result.street = val
            end
        elseif id == 2 then
            local _lb = string_byte(buf, pos)
            if _lb ~= nil and _lb < 0x80 then
                local _np = pos + 1
                local _epos = _np + _lb
                if _epos - 1 > len then error("truncated LEN at offset " .. pos, 0) end
                local _s = buf:sub(_np, _epos - 1)
                if utf8_len(_s) == nil then error("invalid UTF-8 in string field at offset " .. pos, 0) end
                result.city = _s
                pos = _epos
            else
                local val
                val, pos = decode_string(buf, pos)
                result.city = val
            end
        elseif id == 3 then
            local val
            val, pos = wire.decode_int32(buf, pos)
            result.zip = val
        elseif id == 4 then
            local _lb = string_byte(buf, pos)
            if _lb ~= nil and _lb < 0x80 then
                local _np = pos + 1
                local _epos = _np + _lb
                if _epos - 1 > len then error("truncated LEN at offset " .. pos, 0) end
                local _s = buf:sub(_np, _epos - 1)
                if utf8_len(_s) == nil then error("invalid UTF-8 in string field at offset " .. pos, 0) end
                result.apartment = _s
                pos = _epos
            else
                local val
                val, pos = decode_string(buf, pos)
                result.apartment = val
            end
        else
            local _ebid = M.Address_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.Address_decode_lazy(b) return pb.decode_lazy(M.Address_descriptor, b) end
---@param t hello.Address
---@param opts? {single_line: boolean?, indent: string?}
---@return string
function M.Address_text(t, opts) return pb.text.encode(M.Address_descriptor, t, opts) end
---@param t hello.Address
---@return boolean
function M.Address_has_apartment(t) return t.apartment ~= nil end
---@param t hello.Address
function M.Address_clear_apartment(t) t.apartment = nil end

---@param t? hello.Person
---@return hello.Person
function M.Person_new(t) return t or {} end

---@param t hello.Person
---@return string
function M.Person_encode(t)
    local encode_int32 = wire.encode_int32
    local encode_string = wire.encode_string
    local encode_varint = wire.encode_varint
    local _d = M.Person_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 hello.Person, got " .. type(t), 0)
    end
    local out, n = {}, 0
    local v
    -- field 1: name
    v = t.name
    if v ~= nil and v ~= '' then
        n = n + 1; out[n] = "\x0a"
        local _len = #v
        if _len < 128 then
            n = n + 1; out[n] = string.char(_len)
        else
            n = n + 1; out[n] = encode_varint(_len)
        end
        n = n + 1; out[n] = v
    end
    -- field 2: age
    v = t.age
    if v ~= nil and v ~= 0 then
        n = n + 1; out[n] = "\x10"
        n = n + 1; out[n] = encode_int32(v)
    end
    -- field 3: emails
    v = t.emails
    if v ~= nil and #v > 0 then
        local _tag = "\x1a"
        for _i = 1, #v do
            local _b = v[_i]
            n = n + 1; out[n] = _tag
            local _len = #_b
            if _len < 128 then
                n = n + 1; out[n] = string.char(_len)
            else
                n = n + 1; out[n] = encode_varint(_len)
            end
            n = n + 1; out[n] = _b
        end
    end
    -- field 4: status
    v = t.status
    if v ~= nil then
        local nv = v
        if type(v) == 'string' then
            nv = M.Status[v]
            if nv == nil then error("unknown enum value '" .. v .. "' for hello.Status", 0) end
        end
        if nv ~= 0 then
            n = n + 1; out[n] = "\x20"
            n = n + 1; out[n] = encode_int32(nv)
        end
    end
    -- field 5: address
    v = t.address
    if v ~= nil or type(v) == 'cdata' then
        local _b = M.Address_encode(v)
        n = n + 1; out[n] = "\x2a"
        local _len = #_b
        if _len < 128 then
            n = n + 1; out[n] = string.char(_len)
        else
            n = n + 1; out[n] = encode_varint(_len)
        end
        n = n + 1; out[n] = _b
    end
    -- field 6: friends
    v = t.friends
    if v ~= nil and #v > 0 then
        local _tag = "\x32"
        for _i = 1, #v do
            local _b = M.Person_encode(v[_i])
            n = n + 1; out[n] = _tag
            local _len = #_b
            if _len < 128 then
                n = n + 1; out[n] = string.char(_len)
            else
                n = n + 1; out[n] = encode_varint(_len)
            end
            n = n + 1; out[n] = _b
        end
    end
    -- field 7: lucky_numbers
    v = t.lucky_numbers
    if v ~= nil and #v > 0 then
        local parts, m = {}, 0
        for _i = 1, #v do
            m = m + 1; parts[m] = encode_int32(v[_i])
        end
        local _b = table.concat(parts)
        n = n + 1; out[n] = "\x3a"
        local _len = #_b
        if _len < 128 then
            n = n + 1; out[n] = string.char(_len)
        else
            n = n + 1; out[n] = encode_varint(_len)
        end
        n = n + 1; out[n] = _b
    end
    -- field 8: avatar
    v = t.avatar
    if v ~= nil and v ~= '' then
        n = n + 1; out[n] = "\x42"
        local _len = #v
        if _len < 128 then
            n = n + 1; out[n] = string.char(_len)
        else
            n = n + 1; out[n] = encode_varint(_len)
        end
        n = n + 1; out[n] = v
    end
    -- field 9: user_id
    v = t.user_id
    if v ~= nil and v ~= 0 then
        n = n + 1; out[n] = "\x49"
        n = n + 1; out[n] = wire.encode_fixed64(v)
    end
    -- field 10: balance
    v = t.balance
    if v ~= nil and v ~= 0 then
        n = n + 1; out[n] = "\x50"
        n = n + 1; out[n] = wire.encode_sint32(v)
    end
    -- field 11: weight_kg
    v = t.weight_kg
    if v ~= nil and (v ~= 0 or 1/v == -math.huge) then
        n = n + 1; out[n] = "\x59"
        n = n + 1; out[n] = wire.encode_double(v)
    end
    -- field 13: ages_by_nickname
    v = t.ages_by_nickname
    if v ~= nil and next(v) ~= nil then
        local _tag, _ktag, _vtag = "\x6a", "\x0a", "\x10"
        for _k, _val in pairs(v) do
            local entry, _m = {}, 0
            if _k ~= '' then
                _m = _m + 1; entry[_m] = _ktag
                _m = _m + 1; entry[_m] = encode_string(_k)
            end
            if _val ~= 0 then
                _m = _m + 1; entry[_m] = _vtag
                _m = _m + 1; entry[_m] = encode_int32(_val)
            end
            n = n + 1; out[n] = _tag
            local _b = table.concat(entry)
            local _len = #_b
            if _len < 128 then
                n = n + 1; out[n] = string.char(_len)
            else
                n = n + 1; out[n] = encode_varint(_len)
            end
            n = n + 1; out[n] = _b
        end
    end
    -- field 14: nickname_by_age
    v = t.nickname_by_age
    if v ~= nil and next(v) ~= nil then
        local _tag, _ktag, _vtag = "\x72", "\x08", "\x12"
        for _k, _val in pairs(v) do
            local entry, _m = {}, 0
            if _k ~= 0 then
                _m = _m + 1; entry[_m] = _ktag
                _m = _m + 1; entry[_m] = encode_int32(_k)
            end
            if _val ~= '' then
                _m = _m + 1; entry[_m] = _vtag
                _m = _m + 1; entry[_m] = encode_string(_val)
            end
            n = n + 1; out[n] = _tag
            local _b = table.concat(entry)
            local _len = #_b
            if _len < 128 then
                n = n + 1; out[n] = string.char(_len)
            else
                n = n + 1; out[n] = encode_varint(_len)
            end
            n = n + 1; out[n] = _b
        end
    end
    -- field 15: addresses_by_label
    v = t.addresses_by_label
    if v ~= nil and next(v) ~= nil then
        local _tag, _ktag, _vtag = "\x7a", "\x0a", "\x12"
        for _k, _val in pairs(v) do
            local entry, _m = {}, 0
            if _k ~= '' then
                _m = _m + 1; entry[_m] = _ktag
                _m = _m + 1; entry[_m] = encode_string(_k)
            end
            if _val ~= nil then
                _m = _m + 1; entry[_m] = _vtag
                _m = _m + 1; entry[_m] = wire.encode_len(M.Address_encode(_val))
            end
            n = n + 1; out[n] = _tag
            local _b = table.concat(entry)
            local _len = #_b
            if _len < 128 then
                n = n + 1; out[n] = string.char(_len)
            else
                n = n + 1; out[n] = encode_varint(_len)
            end
            n = n + 1; out[n] = _b
        end
    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 hello.Person
function M.Person_decode(buf)
    local decode_int32 = wire.decode_int32
    local decode_len = wire.decode_len
    local decode_string = wire.decode_string
    local decode_tag = wire.decode_tag
    local skip_field = wire.skip_field
    local _d = M.Person_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 hello.Person decode, got " .. type(buf), 0)
    end
    local result = {}
    local pos, len = 1, #buf
    local _uf
    local _n_emails = 0
    local _n_friends = 0
    local _n_lucky_numbers = 0
    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 = decode_tag(buf, pos)
        end
        if id == 1 then
            local _lb = string_byte(buf, pos)
            if _lb ~= nil and _lb < 0x80 then
                local _np = pos + 1
                local _epos = _np + _lb
                if _epos - 1 > len then error("truncated LEN at offset " .. pos, 0) end
                local _s = buf:sub(_np, _epos - 1)
                if utf8_len(_s) == nil then error("invalid UTF-8 in string field at offset " .. pos, 0) end
                result.name = _s
                pos = _epos
            else
                local val
                val, pos = decode_string(buf, pos)
                result.name = val
            end
        elseif id == 2 then
            local val
            val, pos = decode_int32(buf, pos)
            result.age = val
        elseif id == 3 then
            local list = result.emails
            if list == nil then list = {}; result.emails = list end
            local _lb = string_byte(buf, pos)
            if _lb ~= nil and _lb < 0x80 then
                local _np = pos + 1
                local _epos = _np + _lb
                if _epos - 1 > len then error("truncated LEN at offset " .. pos, 0) end
                local _s = buf:sub(_np, _epos - 1)
                if utf8_len(_s) == nil then error("invalid UTF-8 in string field at offset " .. pos, 0) end
                _n_emails = _n_emails + 1; list[_n_emails] = _s
                pos = _epos
            else
                local val
                val, pos = decode_string(buf, pos)
                _n_emails = _n_emails + 1; list[_n_emails] = val
            end
        elseif id == 4 then
            local u
            u, pos = wire.decode_varint(buf, pos)
            result.status = wire.varint_to_int32(u)
        elseif id == 5 then
            local payload
            payload, pos = decode_len(buf, pos)
            local prev = result.address
            if prev == nil then
                result.address = M.Address_decode(payload)
            else
                pb.codec.merge_message(M.Address_descriptor, prev, M.Address_decode(payload))
            end
        elseif id == 6 then
            local list = result.friends
            if list == nil then list = {}; result.friends = list end
            local payload
            payload, pos = decode_len(buf, pos)
            _n_friends = _n_friends + 1; list[_n_friends] = M.Person_decode(payload)
        elseif id == 7 then
            if wt == 2 then
                local payload
                payload, pos = decode_len(buf, pos)
                local p2, lim = 1, #payload
                local list = result.lucky_numbers
                if list == nil then list = table_new(lim, 0); result.lucky_numbers = list end
                while p2 <= lim do
                    local val
                    val, p2 = decode_int32(payload, p2)
                    _n_lucky_numbers = _n_lucky_numbers + 1; list[_n_lucky_numbers] = val
                end
            else
                local list = result.lucky_numbers
                if list == nil then list = {}; result.lucky_numbers = list end
                local val
                val, pos = decode_int32(buf, pos)
                _n_lucky_numbers = _n_lucky_numbers + 1; list[_n_lucky_numbers] = val
            end
        elseif id == 8 then
            local _lb = string_byte(buf, pos)
            if _lb ~= nil and _lb < 0x80 then
                local _np = pos + 1
                local _epos = _np + _lb
                if _epos - 1 > len then error("truncated LEN at offset " .. pos, 0) end
                local _s = buf:sub(_np, _epos - 1)
                result.avatar = _s
                pos = _epos
            else
                local val
                val, pos = wire.decode_bytes(buf, pos)
                result.avatar = val
            end
        elseif id == 9 then
            local val
            val, pos = wire.decode_fixed64(buf, pos)
            result.user_id = val
        elseif id == 10 then
            local val
            val, pos = wire.decode_sint32(buf, pos)
            result.balance = val
        elseif id == 11 then
            local val
            val, pos = wire.decode_double(buf, pos)
            result.weight_kg = val
        elseif id == 13 then
            local map = result.ages_by_nickname
            if map == nil then map = {}; result.ages_by_nickname = map end
            local payload
            payload, pos = decode_len(buf, pos)
            local _ep, _elim = 1, #payload
            local _key, _val = '', 0
            while _ep <= _elim do
                local eid, ewt
                eid, ewt, _ep = decode_tag(payload, _ep)
                if eid == 1 then
                    _key, _ep = decode_string(payload, _ep)
                elseif eid == 2 then
                    _val, _ep = decode_int32(payload, _ep)
                else
                    _ep = skip_field(payload, _ep, ewt, eid)
                end
            end
            map[_key] = _val
        elseif id == 14 then
            local map = result.nickname_by_age
            if map == nil then map = {}; result.nickname_by_age = map end
            local payload
            payload, pos = decode_len(buf, pos)
            local _ep, _elim = 1, #payload
            local _key, _val = 0, ''
            while _ep <= _elim do
                local eid, ewt
                eid, ewt, _ep = decode_tag(payload, _ep)
                if eid == 1 then
                    _key, _ep = decode_int32(payload, _ep)
                elseif eid == 2 then
                    _val, _ep = decode_string(payload, _ep)
                else
                    _ep = skip_field(payload, _ep, ewt, eid)
                end
            end
            map[_key] = _val
        elseif id == 15 then
            local map = result.addresses_by_label
            if map == nil then map = {}; result.addresses_by_label = map end
            local payload
            payload, pos = decode_len(buf, pos)
            local _ep, _elim = 1, #payload
            local _key, _val = '', {}
            while _ep <= _elim do
                local eid, ewt
                eid, ewt, _ep = decode_tag(payload, _ep)
                if eid == 1 then
                    _key, _ep = decode_string(payload, _ep)
                elseif eid == 2 then
                    local _payload
                    _payload, _ep = decode_len(payload, _ep)
                    _val = M.Address_decode(_payload)
                else
                    _ep = skip_field(payload, _ep, ewt, eid)
                end
            end
            map[_key] = _val
        else
            local _ebid = M.Person_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 = 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.Person_decode_lazy(b) return pb.decode_lazy(M.Person_descriptor, b) end
---@param t hello.Person
---@param opts? {single_line: boolean?, indent: string?}
---@return string
function M.Person_text(t, opts) return pb.text.encode(M.Person_descriptor, t, opts) end

-- Service: hello.Greeter
M.Greeter_service = {
    name = "hello.Greeter",
    full_name = "/hello.Greeter",
    methods = {
        SayHello = {
            name = "SayHello",
            full_name = "/hello.Greeter/SayHello",
            input = M.HelloRequest_descriptor,
            output = M.HelloReply_descriptor,
        },
        Echo = {
            name = "Echo",
            full_name = "/hello.Greeter/Echo",
            input = M.HelloRequest_descriptor,
            output = M.HelloRequest_descriptor,
        },
        -- Server-streaming: one request, server pushes N replies.
        StreamHellos = {
            name = "StreamHellos",
            full_name = "/hello.Greeter/StreamHellos",
            input = M.HelloRequest_descriptor,
            output = M.HelloReply_descriptor,
            server_streaming = true,
        },
        -- Client-streaming: client pushes N requests, server returns one reply.
        CollectHellos = {
            name = "CollectHellos",
            full_name = "/hello.Greeter/CollectHellos",
            input = M.HelloRequest_descriptor,
            output = M.HelloReply_descriptor,
            client_streaming = true,
        },
        -- Bidirectional: both sides push and pull independently.
        Chat = {
            name = "Chat",
            full_name = "/hello.Greeter/Chat",
            input = M.HelloRequest_descriptor,
            output = M.HelloReply_descriptor,
            client_streaming = true,
            server_streaming = true,
        },
    },
}

function M.Greeter_client(transport)
    if transport == nil then error("Greeter_client: transport is required", 0) end
    return {
        SayHello = function(req, ctx)
            local req_bytes = M.HelloRequest_encode(req)
            local resp_bytes = transport:unary("/hello.Greeter/SayHello", req_bytes, ctx)
            return M.HelloReply_decode(resp_bytes)
        end,
        Echo = function(req, ctx)
            local req_bytes = M.HelloRequest_encode(req)
            local resp_bytes = transport:unary("/hello.Greeter/Echo", req_bytes, ctx)
            return M.HelloRequest_decode(resp_bytes)
        end,
        -- Server-streaming: one request, server pushes N replies.
        StreamHellos = function(req, ctx)
            local req_bytes = M.HelloRequest_encode(req)
            local raw = transport:server_stream("/hello.Greeter/StreamHellos", req_bytes, ctx)
            return pb.grpc.wrap_server_stream(raw, M.HelloReply_decode)
        end,
        -- Client-streaming: client pushes N requests, server returns one reply.
        CollectHellos = function(ctx)
            local raw = transport:client_stream("/hello.Greeter/CollectHellos", ctx)
            return pb.grpc.wrap_call(raw, M.HelloRequest_encode, M.HelloReply_decode)
        end,
        -- Bidirectional: both sides push and pull independently.
        Chat = function(ctx)
            local raw = transport:bidi("/hello.Greeter/Chat", ctx)
            return pb.grpc.wrap_call(raw, M.HelloRequest_encode, M.HelloReply_decode)
        end,
    }
end

function M.Greeter_server(impl)
    if type(impl) ~= 'table' then error("Greeter_server: impl table is required", 0) end
    return {
        service = M.Greeter_service,
        methods = {
            ["/hello.Greeter/SayHello"] = function(req_bytes, ctx)
                local handler = impl.SayHello
                if handler == nil then error("Greeter.SayHello: handler missing", 0) end
                local req = M.HelloRequest_decode(req_bytes)
                local resp = handler(req, ctx)
                return M.HelloReply_encode(resp)
            end,
            ["/hello.Greeter/Echo"] = function(req_bytes, ctx)
                local handler = impl.Echo
                if handler == nil then error("Greeter.Echo: handler missing", 0) end
                local req = M.HelloRequest_decode(req_bytes)
                local resp = handler(req, ctx)
                return M.HelloRequest_encode(resp)
            end,
        },
        streams = {
            -- Server-streaming: one request, server pushes N replies.
            ["/hello.Greeter/StreamHellos"] = {
                kind = 'server_stream',
                handler = function(req_bytes, server_view, ctx)
                    local handler = impl.StreamHellos
                    if handler == nil then error("Greeter.StreamHellos: handler missing", 0) end
                    local req = M.HelloRequest_decode(req_bytes)
                    local wrapped = pb.grpc.wrap_server_view(server_view, nil, M.HelloReply_encode)
                    handler(req, wrapped, ctx)
                end,
            },
            -- Client-streaming: client pushes N requests, server returns one reply.
            ["/hello.Greeter/CollectHellos"] = {
                kind = 'client_stream',
                handler = function(_, server_view, ctx)
                    local handler = impl.CollectHellos
                    if handler == nil then error("Greeter.CollectHellos: handler missing", 0) end
                    local wrapped = pb.grpc.wrap_server_view(server_view, M.HelloRequest_decode, nil)
                    local resp = handler(wrapped, ctx)
                    if resp == nil then error("Greeter.CollectHellos: handler returned nil response", 0) end
                    server_view:send(M.HelloReply_encode(resp))
                end,
            },
            -- Bidirectional: both sides push and pull independently.
            ["/hello.Greeter/Chat"] = {
                kind = 'bidi',
                handler = function(_, server_view, ctx)
                    local handler = impl.Chat
                    if handler == nil then error("Greeter.Chat: handler missing", 0) end
                    local wrapped = pb.grpc.wrap_server_view(server_view, M.HelloRequest_decode, M.HelloReply_encode)
                    handler(wrapped, ctx)
                end,
            },
        },
    }
end

return M