use std::sync::Arc;
use swiftlet::{ParserConfig, Swiftlet};
fn main() {
let grammar = r#"
start: "hello"i
"#;
let texts = ["hello", "Hello", "HELLO", "HeLLo"];
let conf = Arc::new(ParserConfig::default());
let parser = Swiftlet::from_str(grammar)
.map(|grammar| grammar.parser(conf))
.expect("failed to build parser");
for text in texts {
match parser.parse(&text) {
Ok(ast) => {
ast.print()
// Output:
// Tree("start", ["hello"])
// Tree("start", ["Hello"])
// Tree("start", ["HELLO"])
// Tree("start", ["HeLLo"])
}
Err(err) => eprintln!("{}", err),
}
}
}