parser.rs - mozsearch

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use fluent_syntax::parser::parse;

use std::env;

use std::fs::File;

use std::io;

use std::io::Read;

fn read_file(path: &str) -> Result<String, io::Error> {

    let mut f = File::open(path)?;

    let mut s = String::new();

    f.read_to_string(&mut s)?;

    Ok(s)

fn main() {

    let args: Vec<String> = env::args().collect();

    let source = read_file(args.get(1).expect("Pass an argument")).expect("Failed to fetch file");

    let (ast, errors) = match parse(source.as_str()) {

        Ok(ast) => (ast, None),

        Err((ast, err)) => (ast, Some(err)),

};

    #[cfg(feature = "json")]

        let target_json = serde_json::to_string_pretty(&ast).unwrap();

        println!("{}", target_json);

    #[cfg(not(feature = "json"))]

        use std::fmt::Write;

        let mut result = String::new();

        write!(result, "{:#?}", ast).unwrap();

        println!("{}", result);

    if let Some(errors) = errors {

        println!("\n======== Errors ========== \n");

        for err in errors {

            println!("Err: {:#?}", err);