sark-core 0.26.2

Fiber-free request, route, dispatch, and lifecycle core for Sark
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154

use core::ops::ControlFlow;

use crate::{
    body::admit::{Finished, Open, Track},
    decode::{
        exec, request,
        state::{
            Admission, Admitted, Each, Finish, Flow, Fold, Map, Set, Slot, Uniforms, Whole, admit,
            body, open,
        },
    },
};

/// One-route representation with no route discriminant.
pub struct Uniform<P, F: Set> {
    slot: Whole<P>,
    body: request::Body<F::SyncOpen, F::SyncFinished>,
}

impl<P, F: Set> Uniform<P, F> {
    pub const fn new(prep: P, body: request::Body<F::SyncOpen, F::SyncFinished>) -> Self {
        Self {
            slot: Whole::new(prep),
            body,
        }
    }

    pub(super) fn into_parts(self) -> (P, request::Body<F::SyncOpen, F::SyncFinished>) {
        (self.slot.0, self.body)
    }
}

impl<P> Uniform<P, Admitted> {
    pub fn into_request(self) -> AdmittedBody<P> {
        match self.body {
            request::Body::Open(body) => request::Body::Open(self.slot.admit(body)),
            request::Body::Finished(body) => request::Body::Finished(self.slot.admit(body)),
        }
    }
}

impl<P, F: Set> Flow<P, F> for Uniform<P, F> {
    type Family = Uniforms<P>;

    fn each<'a, M: Each<P, F>>(&'a mut self, each: M) -> M::Output<'a> {
        match &mut self.body {
            request::Body::Open(body) => each.sync_open(&self.slot, body),
            request::Body::Finished(body) => each.sync_done(&self.slot, body),
        }
    }

    fn map_retain<G: Set, M: Map<P, F, G>>(
        self,
        map: M,
    ) -> ControlFlow<M::Break, (M::Retained, Uniform<P, G>)> {
        let (retained, slot, body) = match self.body {
            request::Body::Open(body) => {
                let (retained, slot, body) = map.sync_open(self.slot, body)?;
                (retained, slot, request::Body::Open(body))
            }
            request::Body::Finished(body) => {
                let (retained, slot, body) = map.sync_done(self.slot, body)?;
                (retained, slot, request::Body::Finished(body))
            }
        };
        ControlFlow::Continue((retained, Uniform { slot, body }))
    }

    fn fold<T: Fold<P, F>>(self, fold: T) -> T::Output {
        match self.body {
            request::Body::Open(body) => fold.sync_open(self.slot, body),
            request::Body::Finished(body) => fold.sync_done(self.slot, body),
        }
    }

    fn finish(self) -> Result<Self, Self>
    where
        F: Finish,
    {
        let request::Body::Open(body) = self.body else {
            return Err(self);
        };
        Ok(Self {
            slot: self.slot,
            body: request::Body::Finished(F::sync(body)),
        })
    }

    fn each_open<'a, V: open::Each<F>>(&'a mut self, visit: V) -> V::Output<'a>
    where
        F: open::Set,
    {
        match &mut self.body {
            request::Body::Open(body) => visit.apply(body),
            request::Body::Finished(never) => match *never {},
        }
    }

    fn fold_open<V: open::Fold<P, F>>(self, visit: V) -> V::Output
    where
        F: open::Set,
    {
        match self.body {
            request::Body::Open(body) => visit.sync(self.slot, body),
            request::Body::Finished(never) => match never {},
        }
    }

    fn consume<O, V: FnOnce(F::Body) -> O>(self, visit: V) -> O
    where
        F: open::Set,
    {
        match self.body {
            request::Body::Open(body) => visit(body),
            request::Body::Finished(never) => match never {},
        }
    }
}

impl<P, F: Set> body::Flow<F> for Uniform<P, F> {
    fn fold<T: body::Fold<F>>(self, fold: T) -> T::Output {
        match self.body {
            request::Body::Open(body) => fold.apply(body::Value::SyncOpen(body)),
            request::Body::Finished(body) => fold.apply(body::Value::SyncFinished(body)),
        }
    }
}

impl<P, F, G> Admission<P, F, G> for Uniform<P, F>
where
    F: Set,
    G: Set,
{
    type Output = Uniform<P, G>;

    fn admit<V: admit::Visit<P, F, G>>(self, visit: &mut V) -> ControlFlow<V::Break, Self::Output> {
        let (slot, body) = match self.body {
            request::Body::Open(body) => {
                let (slot, body) = visit.sync_open(self.slot, body)?;
                (slot, request::Body::Open(body))
            }
            request::Body::Finished(body) => {
                let (slot, body) = visit.sync_done(self.slot, body)?;
                (slot, request::Body::Finished(body))
            }
        };
        ControlFlow::Continue(Uniform { slot, body })
    }
}

type AdmittedBody<P> = request::Body<
    request::Admitted<exec::Sync, P, Track<Open>>,
    request::Admitted<exec::Sync, P, Track<Finished>>,
>;