elm-ast 0.2.1

A syn-quality Rust library for parsing and constructing Elm 0.19.1 ASTs
Documentation 
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use elm_ast::comment::Comment;
use elm_ast::declaration::Declaration as D;
fn main() {
    let f = std::env::args()
        .nth(1)
        .expect("usage: probe_doc <file.elm>");
    let src = std::fs::read_to_string(&f).expect("read file");
    let ast = elm_ast::parse::parse(&src).expect("parse Elm source");
    for (i, d) in ast.declarations.iter().enumerate() {
        let doc = match &d.value {
            D::FunctionDeclaration(f) => f.documentation.as_ref().map(|s| s.value.clone()),
            D::AliasDeclaration(a) => a.documentation.as_ref().map(|s| s.value.clone()),
            D::CustomTypeDeclaration(c) => c.documentation.as_ref().map(|s| s.value.clone()),
            _ => None,
        };
        if let Some(t) = doc
            && t.contains("First, two things")
        {
            println!("decl {}: doc contains it", i);
            println!(
                "--- full doc text (len={}) ---\n{}\n--- end ---",
                t.len(),
                t
            );
        }
    }
    println!("---module-level comments: {}---", ast.comments.len());
    for c in &ast.comments {
        if let Comment::Doc(t) = &c.value
            && t.contains("First, two things")
        {
            println!("Top-level doc (!) with match, len={}", t.len());
        }
    }
}