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//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
//
pub type TypeOfProperty<P> = <P as FormatProperty>::Inner;
macro_rules! define_properties {
(@no_lt $name:ident $pat:ident $lt:lifetime) => {
type $name<'a> = mqtt_format::v5::variable_header:: $pat <'a>;
};
(@no_lt $name:ident $pat:ident) => {
type $name = mqtt_format::v5::variable_header:: $pat;
};
(@statify $pat:ident $lt:lifetime) => {
mqtt_format::v5::variable_header:: $pat <'static>
};
(@statify $pat:ident) => {
mqtt_format::v5::variable_header:: $pat
};
(
properties_type: $packettypename:ty,
$( anker: $anker:literal $(,)?)?
pub struct $name:ident {
$( $((anker: $prop_anker:literal ))? $prop_name:ident : $prop:ident $(<$prop_lt:lifetime>)? with setter = $setter:ty),* $(,)?
}
) => {
#[derive(Clone, Debug, PartialEq)]
pub struct $name {
$(
pub(crate) $prop_name: Option<crate::properties::TypeOfProperty<crate::properties::define_properties!(@statify $prop $($prop_lt)?)>>
),*
}
paste::paste! {
#[allow(dead_code)]
impl $name {
#[allow(clippy::new_without_default)]
pub fn new() -> Self {
$name {
$($prop_name: None),*
}
}
$(
#[doc = core::concat!("Set the ", stringify!($prop_name), " property.") ]
$( #[doc = core::concat!("See also: ", crate::util::md_speclink!($prop_anker)) ] )?
pub fn [<with_ $prop_name>](&mut self, value: $setter) -> &mut Self {
<crate::properties::define_properties!(@statify $prop $($prop_lt)?) as crate::properties::FormatProperty>::apply(&mut self.$prop_name, value);
self
}
)*
pub fn as_ref(&self) -> $packettypename {
$packettypename {
$($prop_name: {
self.$prop_name.as_ref().map(|v| {
crate::properties::define_properties!(@no_lt Prop $prop $($prop_lt)?);
Prop {
0: <crate::properties::define_properties!(@statify $prop $($prop_lt)?) as crate::properties::FormatProperty>::get(v)
}
})
}),*
}
}
}
}
};
}
pub(crate) use define_properties;
use crate::packets::VecWriter;
use crate::string::MqttString;
pub struct UserProperty {
key: MqttString,
value: MqttString,
}
pub(crate) trait FormatProperty {
type Inner;
type Setter;
type Outer<'a>;
fn apply(inner: &mut Option<Self::Inner>, value: impl Into<Self::Setter>);
fn get(inner: &Self::Inner) -> Self::Outer<'_>;
}
impl<'i> FormatProperty for mqtt_format::v5::variable_header::UserProperties<'i> {
type Inner = Vec<u8>;
type Setter = UserProperty;
type Outer<'a> = &'a [u8];
fn apply(inner: &mut Option<Self::Inner>, key_value: impl Into<Self::Setter>) {
let key_value = key_value.into();
let user_prop = mqtt_format::v5::variable_header::UserProperty {
key: key_value.key.as_ref(),
value: key_value.value.as_ref(),
};
let inner = inner.get_or_insert_with(Default::default);
if !inner.is_empty() {
mqtt_format::v5::integers::write_variable_u32(
&mut VecWriter(inner),
<mqtt_format::v5::variable_header::UserProperties as mqtt_format::v5::variable_header::MqttProperties>::IDENTIFIER,
)
.expect("Writing a u32 should not fail")
}
user_prop
.write(&mut VecWriter(inner))
.expect("Writing MqttStrings should never be invalid");
}
fn get(inner: &Self::Inner) -> Self::Outer<'_> {
inner.as_ref()
}
}
macro_rules! define_property_types {
(@access_pattern ref $value:ident) => {
$value.as_ref()
};
(@access_pattern deref $value:ident) => {
*$value
};
([ $( $prop:ty => inner = $inner:ty; setter = $setter:ty; outer $mode:tt = $outer:ty ),* $(,)? ]) => {
$(
impl<'i> FormatProperty for $prop {
type Inner = $inner;
type Setter = $setter;
type Outer<'a> = $outer;
fn apply(inner: &mut Option<Self::Inner>, value: impl Into<Self::Setter>) {
*inner = Some(value.into());
}
fn get(inner: &Self::Inner) -> Self::Outer<'_> {
define_property_types!(@access_pattern $mode inner)
}
}
)*
};
}
define_property_types! {[
mqtt_format::v5::variable_header::PayloadFormatIndicator => inner = u8; setter = u8; outer deref = u8,
mqtt_format::v5::variable_header::MessageExpiryInterval => inner = u32; setter = u32; outer deref = u32,
mqtt_format::v5::variable_header::ContentType<'i> => inner = String; setter = String; outer ref = &'a str,
mqtt_format::v5::variable_header::ResponseTopic<'i> => inner = String; setter = String; outer ref = &'a str,
mqtt_format::v5::variable_header::CorrelationData<'i> => inner = Vec<u8>; setter = Vec<u8>; outer ref = &'a [u8],
mqtt_format::v5::variable_header::SubscriptionIdentifier => inner = u32; setter = u32; outer deref = u32,
mqtt_format::v5::variable_header::SessionExpiryInterval => inner = u32; setter = u32; outer deref = u32,
mqtt_format::v5::variable_header::AssignedClientIdentifier<'i> => inner = String; setter = String; outer ref = &'a str,
mqtt_format::v5::variable_header::ServerKeepAlive => inner = u16; setter = u16; outer deref = u16,
mqtt_format::v5::variable_header::AuthenticationMethod<'i> => inner = String; setter = String; outer ref = &'a str,
mqtt_format::v5::variable_header::AuthenticationData<'i> => inner = Vec<u8>; setter = Vec<u8>; outer ref = &'a [u8],
mqtt_format::v5::variable_header::RequestProblemInformation => inner = u8; setter = u8; outer deref = u8,
mqtt_format::v5::variable_header::WillDelayInterval => inner = u32; setter = u32; outer deref = u32,
mqtt_format::v5::variable_header::RequestResponseInformation => inner = u8; setter = u8; outer deref = u8,
mqtt_format::v5::variable_header::ResponseInformation<'i> => inner = String; setter = String; outer ref = &'a str,
mqtt_format::v5::variable_header::ServerReference<'i> => inner = String; setter = String; outer ref = &'a str,
mqtt_format::v5::variable_header::ReasonString<'i> => inner = String; setter = String; outer ref = &'a str,
mqtt_format::v5::variable_header::ReceiveMaximum => inner = core::num::NonZeroU16; setter = core::num::NonZeroU16; outer deref = core::num::NonZeroU16,
mqtt_format::v5::variable_header::TopicAliasMaximum => inner = u16; setter = u16; outer deref = u16,
mqtt_format::v5::variable_header::TopicAlias => inner = u16; setter = u16; outer deref = u16,
|
