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Mireille Raad 4b506c2fee Adding readme under parser and parser/src

Adding readme files under parser and parser/src to make it faster to figure out the files and what each does.

2020-03-22 19:59:20 -04:00

src

Adding readme under parser and parser/src

2020-03-22 19:59:20 -04:00

build.rs

Process lalrpop in cargo's target directory

2019-03-30 22:56:37 -05:00

Cargo.toml

Remove wtf8 dependency

2020-01-27 08:35:58 -05:00

README.md

Adding readme under parser and parser/src

2020-03-22 19:59:20 -04:00

README.md

RustPython/parser

This directory has the code for python lexing, parsing and generating Abstract Syntax Trees (AST).

The steps are:

Lexical analysis: splits the source code into tokens.
Parsing and generating the AST: transforms those tokens into an AST. Uses LALRPOP, a Rust parser generator framework.

This crate is published on https://docs.rs/rustpython-parser.

We wrote a blog post with screenshots and an explanation to help you understand the steps by seeing them in action.

For more information on LALRPOP, here is a link to the LALRPOP book.

There is a readme in the src folder with the details of each file.

How to use

For example, one could do this:

  use rustpython_parser::{parser, ast};
  let python_source = "print('Hello world')";
  let python_ast = parser::parse_expression(python_source).unwrap();