https://github.com/sile/erl_pp

Erlang source code preprocessor written in Rust
https://github.com/sile/erl_pp

erlang preprocessor rust

Last synced: 3 months ago
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Erlang source code preprocessor written in Rust

• Host: GitHub
• URL: https://github.com/sile/erl_pp
• Owner: sile
• License: mit
• Created: 2017-06-10T07:30:38.000Z (over 7 years ago)
• Default Branch: master
• Last Pushed: 2021-10-17T23:46:14.000Z (over 3 years ago)
• Last Synced: 2024-10-08T14:42:15.435Z (4 months ago)
• Topics: erlang, preprocessor, rust
• Language: Rust
• Size: 67.4 KB
• Stars: 6
• Watchers: 3
• Forks: 2
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
erl_pp

======

[![erl_pp](https://img.shields.io/crates/v/erl_pp.svg)](https://crates.io/crates/erl_pp)

[![Documentation](https://docs.rs/erl_pp/badge.svg)](https://docs.rs/erl_pp)

[![Actions Status](https://github.com/sile/erl_pp/workflows/CI/badge.svg)](https://github.com/sile/erl_pp/actions)

[![Coverage Status](https://coveralls.io/repos/github/sile/erl_pp/badge.svg?branch=master)](https://coveralls.io/github/sile/erl_pp?branch=master)

[![License: MIT](https://img.shields.io/badge/license-MIT-blue.svg)](LICENSE)

An Erlang source code preprocessor written in Rust.

[Documentation](https://docs.rs/erl_pp)

References

----------

- [Erlang Reference Manual -- Preprocessor](http://erlang.org/doc/reference_manual/macros.html)

Examples

--------

Preprocesses an Erlang source code snippet.

```rust

use erl_pp::Preprocessor;

use erl_tokenize::Lexer;

let src = r#"-define(FOO(A), {A, ?LINE}). io:format("Hello: ~p", [?FOO(bar)])."#;

let pp = Preprocessor::new(Lexer::new(src));

let tokens = pp.collect::, _>>().unwrap();

assert_eq!(tokens.iter().map(|t| t.text()).collect::>(),

           ["io", ":", "format", "(", r#""Hello: ~p""#, ",",

            "[", "{", "bar", ",", "1", "}", "]", ")", "."]);

```

Executes the example `pp` command:

```bash

$ cargo run --example pp -- /dev/stdin <

  ?FOO + ?BAR(baz).

-endif.

EOS

[Position { filepath: Some("stdin"), offset: 61, line: 6, column: 1 }] "foo"

[Position { filepath: Some("stdin"), offset: 64, line: 6, column: 4 }] "("

[Position { filepath: Some("stdin"), offset: 65, line: 6, column: 5 }] ")"

[Position { filepath: Some("stdin"), offset: 67, line: 6, column: 2 }] "->"

[Position { filepath: Some("stdin"), offset: 13, line: 1, column: 2 }] "foo"

[Position { filepath: Some("stdin"), offset: 77, line: 7, column: 2 }] "+"

[Position { filepath: Some("stdin"), offset: 35, line: 2, column: 2 }] "{"

[Position { filepath: Some("stdin"), offset: 36, line: 2, column: 3 }] "bar"

[Position { filepath: Some("stdin"), offset: 39, line: 2, column: 6 }] ","

[Position { filepath: Some("stdin"), offset: 84, line: 7, column: 7 }] "baz"

[Position { filepath: Some("stdin"), offset: 42, line: 2, column: 3 }] "}"

[Position { filepath: Some("stdin"), offset: 88, line: 7, column: 11 }] "."

TOKEN COUNT: 12

ELAPSED: 0.001244 seconds

```