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layer: Implement Layer for tuples of up to 16 elements (#694)

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Jonas Platte 2022-10-04 20:54:39 +02:00 committed by David Pedersen
parent 04527aeb43
commit 66010c1443
2 changed files with 331 additions and 0 deletions
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1
tower-layer/src/lib.rs
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@ -19,6 +19,7 @@
mod identity;
mod layer_fn;
mod stack;
mod tuple;
pub use self::{
identity::Identity,

330
tower-layer/src/tuple.rs Normal file
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@ -0,0 +1,330 @@
use crate::Layer;
impl<S> Layer<S> for () {
type Service = S;
fn layer(&self, service: S) -> Self::Service {
service
}
}
impl<S, L1> Layer<S> for (L1,)
where
L1: Layer<S>,
{
type Service = L1::Service;
fn layer(&self, service: S) -> Self::Service {
let (l1,) = self;
l1.layer(service)
}
}
impl<S, L1, L2> Layer<S> for (L1, L2)
where
L1: Layer<L2::Service>,
L2: Layer<S>,
{
type Service = L1::Service;
fn layer(&self, service: S) -> Self::Service {
let (l1, l2) = self;
l1.layer(l2.layer(service))
}
}
impl<S, L1, L2, L3> Layer<S> for (L1, L2, L3)
where
L1: Layer<L2::Service>,
L2: Layer<L3::Service>,
L3: Layer<S>,
{
type Service = L1::Service;
fn layer(&self, service: S) -> Self::Service {
let (l1, l2, l3) = self;
l1.layer((l2, l3).layer(service))
}
}
impl<S, L1, L2, L3, L4> Layer<S> for (L1, L2, L3, L4)
where
L1: Layer<L2::Service>,
L2: Layer<L3::Service>,
L3: Layer<L4::Service>,
L4: Layer<S>,
{
type Service = L1::Service;
fn layer(&self, service: S) -> Self::Service {
let (l1, l2, l3, l4) = self;
l1.layer((l2, l3, l4).layer(service))
}
}
impl<S, L1, L2, L3, L4, L5> Layer<S> for (L1, L2, L3, L4, L5)
where
L1: Layer<L2::Service>,
L2: Layer<L3::Service>,
L3: Layer<L4::Service>,
L4: Layer<L5::Service>,
L5: Layer<S>,
{
type Service = L1::Service;
fn layer(&self, service: S) -> Self::Service {
let (l1, l2, l3, l4, l5) = self;
l1.layer((l2, l3, l4, l5).layer(service))
}
}
impl<S, L1, L2, L3, L4, L5, L6> Layer<S> for (L1, L2, L3, L4, L5, L6)
where
L1: Layer<L2::Service>,
L2: Layer<L3::Service>,
L3: Layer<L4::Service>,
L4: Layer<L5::Service>,
L5: Layer<L6::Service>,
L6: Layer<S>,
{
type Service = L1::Service;
fn layer(&self, service: S) -> Self::Service {
let (l1, l2, l3, l4, l5, l6) = self;
l1.layer((l2, l3, l4, l5, l6).layer(service))
}
}
impl<S, L1, L2, L3, L4, L5, L6, L7> Layer<S> for (L1, L2, L3, L4, L5, L6, L7)
where
L1: Layer<L2::Service>,
L2: Layer<L3::Service>,
L3: Layer<L4::Service>,
L4: Layer<L5::Service>,
L5: Layer<L6::Service>,
L6: Layer<L7::Service>,
L7: Layer<S>,
{
type Service = L1::Service;
fn layer(&self, service: S) -> Self::Service {
let (l1, l2, l3, l4, l5, l6, l7) = self;
l1.layer((l2, l3, l4, l5, l6, l7).layer(service))
}
}
impl<S, L1, L2, L3, L4, L5, L6, L7, L8> Layer<S> for (L1, L2, L3, L4, L5, L6, L7, L8)
where
L1: Layer<L2::Service>,
L2: Layer<L3::Service>,
L3: Layer<L4::Service>,
L4: Layer<L5::Service>,
L5: Layer<L6::Service>,
L6: Layer<L7::Service>,
L7: Layer<L8::Service>,
L8: Layer<S>,
{
type Service = L1::Service;
fn layer(&self, service: S) -> Self::Service {
let (l1, l2, l3, l4, l5, l6, l7, l8) = self;
l1.layer((l2, l3, l4, l5, l6, l7, l8).layer(service))
}
}
impl<S, L1, L2, L3, L4, L5, L6, L7, L8, L9> Layer<S> for (L1, L2, L3, L4, L5, L6, L7, L8, L9)
where
L1: Layer<L2::Service>,
L2: Layer<L3::Service>,
L3: Layer<L4::Service>,
L4: Layer<L5::Service>,
L5: Layer<L6::Service>,
L6: Layer<L7::Service>,
L7: Layer<L8::Service>,
L8: Layer<L9::Service>,
L9: Layer<S>,
{
type Service = L1::Service;
fn layer(&self, service: S) -> Self::Service {
let (l1, l2, l3, l4, l5, l6, l7, l8, l9) = self;
l1.layer((l2, l3, l4, l5, l6, l7, l8, l9).layer(service))
}
}
impl<S, L1, L2, L3, L4, L5, L6, L7, L8, L9, L10> Layer<S>
for (L1, L2, L3, L4, L5, L6, L7, L8, L9, L10)
where
L1: Layer<L2::Service>,
L2: Layer<L3::Service>,
L3: Layer<L4::Service>,
L4: Layer<L5::Service>,
L5: Layer<L6::Service>,
L6: Layer<L7::Service>,
L7: Layer<L8::Service>,
L8: Layer<L9::Service>,
L9: Layer<L10::Service>,
L10: Layer<S>,
{
type Service = L1::Service;
fn layer(&self, service: S) -> Self::Service {
let (l1, l2, l3, l4, l5, l6, l7, l8, l9, l10) = self;
l1.layer((l2, l3, l4, l5, l6, l7, l8, l9, l10).layer(service))
}
}
impl<S, L1, L2, L3, L4, L5, L6, L7, L8, L9, L10, L11> Layer<S>
for (L1, L2, L3, L4, L5, L6, L7, L8, L9, L10, L11)
where
L1: Layer<L2::Service>,
L2: Layer<L3::Service>,
L3: Layer<L4::Service>,
L4: Layer<L5::Service>,
L5: Layer<L6::Service>,
L6: Layer<L7::Service>,
L7: Layer<L8::Service>,
L8: Layer<L9::Service>,
L9: Layer<L10::Service>,
L10: Layer<L11::Service>,
L11: Layer<S>,
{
type Service = L1::Service;
fn layer(&self, service: S) -> Self::Service {
let (l1, l2, l3, l4, l5, l6, l7, l8, l9, l10, l11) = self;
l1.layer((l2, l3, l4, l5, l6, l7, l8, l9, l10, l11).layer(service))
}
}
impl<S, L1, L2, L3, L4, L5, L6, L7, L8, L9, L10, L11, L12> Layer<S>
for (L1, L2, L3, L4, L5, L6, L7, L8, L9, L10, L11, L12)
where
L1: Layer<L2::Service>,
L2: Layer<L3::Service>,
L3: Layer<L4::Service>,
L4: Layer<L5::Service>,
L5: Layer<L6::Service>,
L6: Layer<L7::Service>,
L7: Layer<L8::Service>,
L8: Layer<L9::Service>,
L9: Layer<L10::Service>,
L10: Layer<L11::Service>,
L11: Layer<L12::Service>,
L12: Layer<S>,
{
type Service = L1::Service;
fn layer(&self, service: S) -> Self::Service {
let (l1, l2, l3, l4, l5, l6, l7, l8, l9, l10, l11, l12) = self;
l1.layer((l2, l3, l4, l5, l6, l7, l8, l9, l10, l11, l12).layer(service))
}
}
impl<S, L1, L2, L3, L4, L5, L6, L7, L8, L9, L10, L11, L12, L13> Layer<S>
for (L1, L2, L3, L4, L5, L6, L7, L8, L9, L10, L11, L12, L13)
where
L1: Layer<L2::Service>,
L2: Layer<L3::Service>,
L3: Layer<L4::Service>,
L4: Layer<L5::Service>,
L5: Layer<L6::Service>,
L6: Layer<L7::Service>,
L7: Layer<L8::Service>,
L8: Layer<L9::Service>,
L9: Layer<L10::Service>,
L10: Layer<L11::Service>,
L11: Layer<L12::Service>,
L12: Layer<L13::Service>,
L13: Layer<S>,
{
type Service = L1::Service;
fn layer(&self, service: S) -> Self::Service {
let (l1, l2, l3, l4, l5, l6, l7, l8, l9, l10, l11, l12, l13) = self;
l1.layer((l2, l3, l4, l5, l6, l7, l8, l9, l10, l11, l12, l13).layer(service))
}
}
impl<S, L1, L2, L3, L4, L5, L6, L7, L8, L9, L10, L11, L12, L13, L14> Layer<S>
for (L1, L2, L3, L4, L5, L6, L7, L8, L9, L10, L11, L12, L13, L14)
where
L1: Layer<L2::Service>,
L2: Layer<L3::Service>,
L3: Layer<L4::Service>,
L4: Layer<L5::Service>,
L5: Layer<L6::Service>,
L6: Layer<L7::Service>,
L7: Layer<L8::Service>,
L8: Layer<L9::Service>,
L9: Layer<L10::Service>,
L10: Layer<L11::Service>,
L11: Layer<L12::Service>,
L12: Layer<L13::Service>,
L13: Layer<L14::Service>,
L14: Layer<S>,
{
type Service = L1::Service;
fn layer(&self, service: S) -> Self::Service {
let (l1, l2, l3, l4, l5, l6, l7, l8, l9, l10, l11, l12, l13, l14) = self;
l1.layer((l2, l3, l4, l5, l6, l7, l8, l9, l10, l11, l12, l13, l14).layer(service))
}
}
#[rustfmt::skip]
impl<S, L1, L2, L3, L4, L5, L6, L7, L8, L9, L10, L11, L12, L13, L14, L15> Layer<S>
for (L1, L2, L3, L4, L5, L6, L7, L8, L9, L10, L11, L12, L13, L14, L15)
where
L1: Layer<L2::Service>,
L2: Layer<L3::Service>,
L3: Layer<L4::Service>,
L4: Layer<L5::Service>,
L5: Layer<L6::Service>,
L6: Layer<L7::Service>,
L7: Layer<L8::Service>,
L8: Layer<L9::Service>,
L9: Layer<L10::Service>,
L10: Layer<L11::Service>,
L11: Layer<L12::Service>,
L12: Layer<L13::Service>,
L13: Layer<L14::Service>,
L14: Layer<L15::Service>,
L15: Layer<S>,
{
type Service = L1::Service;
fn layer(&self, service: S) -> Self::Service {
let (l1, l2, l3, l4, l5, l6, l7, l8, l9, l10, l11, l12, l13, l14, l15) = self;
l1.layer((l2, l3, l4, l5, l6, l7, l8, l9, l10, l11, l12, l13, l14, l15).layer(service))
}
}
#[rustfmt::skip]
impl<S, L1, L2, L3, L4, L5, L6, L7, L8, L9, L10, L11, L12, L13, L14, L15, L16> Layer<S>
for (L1, L2, L3, L4, L5, L6, L7, L8, L9, L10, L11, L12, L13, L14, L15, L16)
where
L1: Layer<L2::Service>,
L2: Layer<L3::Service>,
L3: Layer<L4::Service>,
L4: Layer<L5::Service>,
L5: Layer<L6::Service>,
L6: Layer<L7::Service>,
L7: Layer<L8::Service>,
L8: Layer<L9::Service>,
L9: Layer<L10::Service>,
L10: Layer<L11::Service>,
L11: Layer<L12::Service>,
L12: Layer<L13::Service>,
L13: Layer<L14::Service>,
L14: Layer<L15::Service>,
L15: Layer<L16::Service>,
L16: Layer<S>,
{
type Service = L1::Service;
fn layer(&self, service: S) -> Self::Service {
let (l1, l2, l3, l4, l5, l6, l7, l8, l9, l10, l11, l12, l13, l14, l15, l16) = self;
l1.layer((l2, l3, l4, l5, l6, l7, l8, l9, l10, l11, l12, l13, l14, l15, l16).layer(service))
}
}