protokit_proto 0.0.1

Usable protocol buffers
Documentation 
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use crate::ast::*;

pub struct ValidateCtx {
    errors: Vec<String>,
}

pub trait Validator<'v>: Visitor {
    fn new(ctx: &'v mut ValidateCtx) -> Self;
}

pub struct NoGroupValidator<'v> {
    ctx: &'v mut ValidateCtx,
}

impl<'v> Validator<'v> for NoGroupValidator<'v> {
    fn new(ctx: &'v mut ValidateCtx) -> Self {
        Self { ctx }
    }
}

impl Visitor for NoGroupValidator<'_> {
    fn visit_group(&mut self, item: &mut Group) {
        self.ctx.errors.push(format!("Found group: {}", item.name));
    }
}

pub fn validate(proto: &mut Proto) -> Vec<String> {
    let mut ctx = ValidateCtx { errors: vec![] };

    NoGroupValidator::new(&mut ctx).visit_proto(proto);

    ctx.errors
}

// #[test]
// fn test_validate() {
//     use crate::parser::proto_file;
//     let (_rest, mut proto) = proto_file(include_str!("../../../proto/com/book/book.proto")).unwrap();
//     let results = validate(&mut proto);
//     assert_eq!(results.len(), 0, "{:?}", results);
// }