use std::sync::Arc;
use swiftlet::{ParserConfig, Swiftlet};
fn main() {
let grammar = r#"
start: hello | namaste
hello: "Hello"
namaste: "Namaste"
"#;
let texts = ["Hello", "Namaste"];
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", [Tree("hello", ["Hello"])])
// Tree("start", [Tree("namaste", ["Namaste"])])
}
Err(err) => eprintln!("{}", err),
}
}
}