lib-ruby-parser 3.0.11

Ruby parser
Documentation 
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use lib_ruby_parser_nodes::{template::*, Message};

const TEMPLATE: &str = "// This file is auto-generated by {{ helper generated-by }}

use crate::blobs::Blob;
use super::DiagnosticMessage;

extern \"C\" {
{{ each message }}<dnl>
    fn {{ helper extern-predicate-name }}(blob: *const Blob<DiagnosticMessage>) -> bool;
{{ end }}<dnl>
}

impl DiagnosticMessage {
{{ each message }}<dnl>
    /// Returns true if current variant is {{ helper message-camelcase-name }}
    pub fn is_{{ helper message-lower-name }}(&self) -> bool {
        unsafe { {{ helper extern-predicate-name }}(&self.blob) }
    }
{{ end }}<dnl>
}
";

pub(crate) fn codegen() {
    let template = TemplateRoot::new(TEMPLATE).unwrap();
    let mut fns = crate::codegen::fns::default_fns!();

    fns.register::<Message, F::Helper>(
        "extern-predicate-name",
        lib_ruby_parser_bindings::helpers::messages::variant_predicate::name,
    );

    let contents = template.render(ALL_DATA, &fns);
    std::fs::write("src/error/message/external/predicates.rs", contents).unwrap();
}