Pest parser grammar for Workflow Description Language (WDL).
use pest::iterators::Pair;
use pest_wdl_1 as wdl;
fn main() {
let text = r#"
version 1.0
workflow foo {
}
"#;
let root: Pair<'_, wdl::Rule> =
wdl::parse_document(text).expect("Error parsing WDL document");
...
}