52 lines
960 B
Rust
52 lines
960 B
Rust
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// build-pass
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// compile-flags: --crate-type=lib
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use std::marker::PhantomData;
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pub trait StreamOnce {
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type Token;
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}
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impl StreamOnce for &str {
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type Token = ();
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}
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pub trait Parser<Input: StreamOnce> {
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type PartialState: Default;
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fn parse_mode(&self, _state: &Self::PartialState) {}
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fn parse_mode_impl() {}
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}
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pub fn parse_bool<'a>() -> impl Parser<&'a str> {
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pub struct TokensCmp<C, Input>
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where
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Input: StreamOnce,
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{
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_cmp: C,
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_marker: PhantomData<Input>,
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}
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impl<Input, C> Parser<Input> for TokensCmp<C, Input>
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where
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C: FnMut(Input::Token),
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Input: StreamOnce,
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{
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type PartialState = ();
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}
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TokensCmp { _cmp: |_| (), _marker: PhantomData }
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}
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pub struct ParseBool;
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impl<'a> Parser<&'a str> for ParseBool
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where
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&'a str: StreamOnce,
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{
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type PartialState = ();
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fn parse_mode_impl() {
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parse_bool().parse_mode(&Default::default())
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}
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}
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