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
use crate::{
error::ParseResult,
stream::{Positioned, RangeStreamOnce, ResetStream, StreamErrorFor, StreamOnce},
};
#[derive(Copy, Clone, Eq, PartialEq, Ord, PartialOrd, Debug)]
pub struct Stream<S, U> {
pub stream: S,
pub state: U,
}
impl<S, U> Positioned for Stream<S, U>
where
S: Positioned,
{
#[inline]
fn position(&self) -> Self::Position {
self.stream.position()
}
}
impl<S, U> ResetStream for Stream<S, U>
where
S: ResetStream,
{
type Checkpoint = S::Checkpoint;
#[inline]
fn checkpoint(&self) -> Self::Checkpoint {
self.stream.checkpoint()
}
#[inline]
fn reset(&mut self, checkpoint: Self::Checkpoint) -> Result<(), Self::Error> {
self.stream.reset(checkpoint)
}
}
impl<S, U> StreamOnce for Stream<S, U>
where
S: StreamOnce,
{
type Token = S::Token;
type Range = S::Range;
type Position = S::Position;
type Error = S::Error;
#[inline]
fn uncons(&mut self) -> Result<S::Token, StreamErrorFor<Self>> {
self.stream.uncons()
}
fn is_partial(&self) -> bool {
self.stream.is_partial()
}
}
impl<S, U> RangeStreamOnce for Stream<S, U>
where
S: RangeStreamOnce,
{
#[inline]
fn uncons_range(&mut self, size: usize) -> Result<Self::Range, StreamErrorFor<Self>> {
self.stream.uncons_range(size)
}
#[inline]
fn uncons_while<F>(&mut self, f: F) -> Result<Self::Range, StreamErrorFor<Self>>
where
F: FnMut(Self::Token) -> bool,
{
self.stream.uncons_while(f)
}
fn uncons_while1<F>(&mut self, f: F) -> ParseResult<Self::Range, StreamErrorFor<Self>>
where
F: FnMut(Self::Token) -> bool,
{
self.stream.uncons_while1(f)
}
#[inline]
fn distance(&self, end: &Self::Checkpoint) -> usize {
self.stream.distance(end)
}
#[inline]
fn range(&self) -> Self::Range {
self.stream.range()
}
}