2 unstable releases
0.2.0 | Jun 15, 2024 |
---|---|
0.1.0 | Jun 4, 2024 |
#1233 in Parser implementations
57 downloads per month
19KB
522 lines
anyseq
anyseq is a Rust crate that provides a trait named Lexer
for splitting structured text into string tokens.
By implementing this trait, Deserializer
for serde
are automatically generated.
Features
- Provides a trait named
Lexer
for creating token steam. - Automatically generates
serde
Deserializer when the trait is implemented. - Simplifies the implementation of Deserializer, such as lexers that split comma-separated strings into tokens.
Lexer
is compatibility with thewinnow
crate, making implementation easier when usingwinnow
.
Usage
use anyseq::{Token, Lexer};
use anyseq::de::Deserializer;
use serde::Deserialize;
struct IterLexer;
impl<I, O> Lexer<I, Token<O>> for IterLexer
where
I: Iterator<Item = O>
{
type Error = Box<dyn std::error::Error>;
fn item(input: &mut I) -> Result<Token<O>, Self::Error> {
Ok(match input.next() {
Some(t) => Token::Item(t),
None => Token::SeqEnd,
})
}
}
#[derive(Debug, PartialEq, Deserialize)]
struct Test {
a: i32,
b: String,
}
let mut d = Deserializer::<IterLexer, _, _>::new(["42", "foo"].into_iter());
assert_eq!(
Test {
a: 42,
b: "foo".to_string(),
},
Test::deserialize(&mut d).unwrap()
);
Dependencies
~1.2–1.8MB
~38K SLoC