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Merge pull request #343 from matthewjasper/add-wg-grammar
Add wg-grammar benchmark
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‎collector/benchmarks/wg-grammar/.travis.yml

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git:
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submodules: false
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before_install:
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- git submodule init
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- git submodule update
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language: rust
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rust:
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- stable
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script:
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- cargo check
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- cargo run --release -- dir external/rust/src

‎collector/benchmarks/wg-grammar/Cargo.lock

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‎collector/benchmarks/wg-grammar/Cargo.toml

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[package]
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name = "rust-grammar"
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version = "0.1.0"
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authors = ["The Rust Project Developers"]
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[dependencies]
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gll = { git = "https://github.com/rust-lang-nursery/gll" }

‎collector/benchmarks/wg-grammar/LICENSE-APACHE

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‎collector/benchmarks/wg-grammar/LICENSE-MIT

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Permission is hereby granted, free of charge, to any
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person obtaining a copy of this software and associated
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documentation files (the "Software"), to deal in the
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Software without restriction, including without
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limitation the rights to use, copy, modify, merge,
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publish, distribute, sublicense, and/or sell copies of
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the Software, and to permit persons to whom the Software
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is furnished to do so, subject to the following
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conditions:
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The above copyright notice and this permission notice
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shall be included in all copies or substantial portions
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of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
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ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
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TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
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PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
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SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
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IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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DEALINGS IN THE SOFTWARE.

‎collector/benchmarks/wg-grammar/README.md

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# wg-grammar
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This is the home for the Rust Grammar Working Group. The goal of the working
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group is to satisfy [RFC 1331] and produce a testable, canonical grammar for
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the Rust language. The primary audiences for the grammar are:
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- Rust RFC authors who wish to propose and communicate changes.
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- rustc and Rust tool developers who need an authoritative definition of the
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grammar.
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- To assist documentation efforts to communicate valid Rust syntax to users,
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and to facilitate the [Rust language specification].
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The grammar tools produced here are not intended to be used directly within
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rustc, or any other existing tools.
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## Meeting Schedule
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Meetings take place on the [#wg-grammar channel on Discord][discord] at [20:00
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CET][time] every other Wednesday. Feel free to drop by the Discord channel if
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you are interested!
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[discord]: https://discord.gg/dj9NjJR
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[time]: https://time.is/compare/2000_in_CET
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## Test Suite
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This project includes a executable binary for exercising the grammar. Use
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`cargo run` to build and run it. Using `--release` is encouraged as it is many
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times faster. It supports several subcommands to point it at different files
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or directories to examine. For example, if you check out the submodule
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(explained below), you can run the tests with the following command:
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cargo run --release -- dir external/rust/src
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This repository includes a submodule to the main rust repo to use as a
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collection of Rust code to test against the grammar. The command `git
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submodule update --init` may be used to fetch it. However, it is not necessary
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and you may run the tool against any collection of Rust code at your disposal.
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## Links
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- [Meeting notes](misc/meeting-notes.md)
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- [Resources](misc/resources.md)
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## License
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Licensed under either of
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* Apache License, Version 2.0 ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
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* MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
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at your option.
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### Contribution
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Unless you explicitly state otherwise, any contribution intentionally submitted
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for inclusion in this crate by you, as defined in the Apache-2.0 license, shall
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be dual licensed as above, without any additional terms or conditions.
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[RFC 1331]: https://github.com/rust-lang/rfcs/blob/master/text/1331-grammar-is-canonical.md
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[Rust language specification]: https://github.com/rust-lang-nursery/reference/

‎collector/benchmarks/wg-grammar/grammar/expr.lyg

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// Grammar file used to generate src/parse.rs
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Expr =
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| Literal:LITERAL
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| Paren:{ "(" expr:Expr ")" }
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| Borrow:{ "&" mutable:"mut"? expr:Expr }
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| Box:{ "box" expr:Expr }
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| Try:{ expr:Expr "?" }
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| Range:{ start:Expr? ".." end:Expr? }
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| RangeInclusive:{ start:Expr? "..=" end:Expr }
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| Cast:{ expr:Expr "as" ty:IDENT }
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| Index:{ base:Expr "[" index:Expr "]" }
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| Array:{ "[" exprs:Expr* % "," ","? "]" }
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| Repeat:{ "[" elem:Expr ";" count:Expr "]" }
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| Tuple:{ "(" exprs:Expr* % "," ","? ")" }
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| Call:{ callee:Expr "(" args:Expr* % "," ","? ")" }
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| MethodCall:{ receiver:Expr "." method:IDENT "(" args:Expr* % "," ","? ")" }
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| Continue:{ "continue" }
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| Break:{ "break" value:Expr? }
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| Return:{ "return" value:Expr? }
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;
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ModuleContents = items:Expr*;

‎collector/benchmarks/wg-grammar/src/lib.rs

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extern crate gll;
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pub mod parse;

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