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use crate::{
frame::{AMQPFrame, ProtocolVersion},
protocol::{basic::gen_properties, *},
types::{generation::*, *},
};
use cookie_factory::{combinator::slice, sequence::tuple};
use std::io::Write;
pub fn gen_frame<'a, W: Write + BackToTheBuffer + 'a>(
frame: &'a AMQPFrame,
) -> impl SerializeFn<W> + 'a {
move |x| match frame {
AMQPFrame::ProtocolHeader(version) => gen_protocol_header(*version)(x),
AMQPFrame::Heartbeat(channel_id) => gen_heartbeat_frame(*channel_id)(x),
AMQPFrame::Method(channel_id, method) => gen_method_frame(*channel_id, method)(x),
AMQPFrame::Header(channel_id, class_id, header) => {
gen_content_header_frame(*channel_id, *class_id, header.body_size, &header.properties)(
x,
)
}
AMQPFrame::Body(channel_id, data) => gen_content_body_frame(*channel_id, data)(x),
}
}
fn gen_protocol_header<W: Write>(version: ProtocolVersion) -> impl SerializeFn<W> {
tuple((
slice(metadata::NAME.as_bytes()),
gen_short_short_uint(0),
gen_protocol_version(version),
))
}
fn gen_protocol_version<W: Write>(version: ProtocolVersion) -> impl SerializeFn<W> {
tuple((
gen_short_short_uint(version.major),
gen_short_short_uint(version.minor),
gen_short_short_uint(version.revision),
))
}
fn gen_heartbeat_frame<W: Write>(channel_id: ShortUInt) -> impl SerializeFn<W> {
tuple((
gen_short_short_uint(constants::FRAME_HEARTBEAT),
gen_id(channel_id),
gen_long_uint(0),
gen_short_short_uint(constants::FRAME_END),
))
}
fn gen_method_frame<'a, W: Write + BackToTheBuffer + 'a>(
channel_id: ShortUInt,
class: &'a AMQPClass,
) -> impl SerializeFn<W> + 'a {
tuple((
gen_short_short_uint(constants::FRAME_METHOD),
gen_id(channel_id),
gen_with_len(gen_class(class)),
gen_short_short_uint(constants::FRAME_END),
))
}
fn gen_content_header_frame<'a, W: Write + BackToTheBuffer + 'a>(
channel_id: ShortUInt,
class_id: ShortUInt,
length: LongLongUInt,
properties: &'a basic::AMQPProperties,
) -> impl SerializeFn<W> + 'a {
tuple((
gen_short_short_uint(constants::FRAME_HEADER),
gen_id(channel_id),
gen_with_len(tuple((
gen_id(class_id),
gen_short_uint(0 ),
gen_long_long_uint(length),
gen_properties(properties),
))),
gen_short_short_uint(constants::FRAME_END),
))
}
fn gen_content_body_frame<'a, W: Write + 'a>(
channel_id: ShortUInt,
content: &'a [u8],
) -> impl SerializeFn<W> + 'a {
tuple((
gen_short_short_uint(constants::FRAME_BODY),
gen_id(channel_id),
gen_long_uint(content.len() as LongUInt),
slice(content),
gen_short_short_uint(constants::FRAME_END),
))
}