tdlib_rs_parser/
lib.rs

1// Copyright 2020 - developers of the `grammers` project.
2// Copyright 2021 - developers of the `tdlib-rs` project.
3// Copyright 2024 - developers of the `tgt` and `tdlib-rs` projects.
4//
5// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6// https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your
8// option. This file may not be copied, modified, or distributed
9// except according to those terms.
10
11//! This library provides a public interface to parse [Type Language]
12//! definitions.
13//!
14//! It exports a single public method, [`parse_tl_file`] to parse entire
15//! `.tl` files and yield the definitions it contains. This method will
16//! yield [`Definition`]s containing all the information you would possibly
17//! need to later use somewhere else (for example, to generate code).
18//!
19//! [Type Language]: https://core.telegram.org/mtproto/TL
20//! [`parse_tl_file`]: fn.parse_tl_file.html
21//! [`Definition`]: tl/struct.Definition.html
22pub mod errors;
23pub mod tl;
24mod tl_iterator;
25
26use errors::ParseError;
27use tl::Definition;
28use tl_iterator::TlIterator;
29
30/// Parses a file full of [Type Language] definitions.
31///
32/// # Examples
33///
34/// ```no_run
35/// use std::fs::File;
36/// use std::io::{self, Read};
37/// use tdlib_rs_parser::parse_tl_file;
38///
39/// fn main() -> std::io::Result<()> {
40///     let mut file = File::open("api.tl")?;
41///     let mut contents = String::new();
42///     file.read_to_string(&mut contents)?;
43///
44///     for definition in parse_tl_file(contents) {
45///         dbg!(definition);
46///     }
47///
48///     Ok(())
49/// }
50/// ```
51///
52/// [Type Language]: https://core.telegram.org/mtproto/TL
53pub fn parse_tl_file(contents: String) -> impl Iterator<Item = Result<Definition, ParseError>> {
54    TlIterator::new(contents)
55}