Crates.io | lalrpop |
lib.rs | lalrpop |
version | 0.20.2 |
source | src |
created_at | 2015-07-26 11:48:49.391461 |
updated_at | 2024-02-29 05:25:21.651803 |
description | convenient LR(1) parser generator |
homepage | |
repository | https://github.com/lalrpop/lalrpop |
max_upload_size | |
id | 2682 |
size | 1,806,050 |
LALRPOP is a Rust parser generator framework with usability as its primary goal. You should be able to write compact, DRY, readable grammars. To this end, LALRPOP offers a number of nifty features:
Id*
and define
things like Comma<Id>
for a comma-separated list of identifiers.Expr<"all">
to represent the full range of expressions, but
Expr<"if">
to represent the subset of expressions that can appear
in an if
expression.*
and ?
.Despite its name, LALRPOP in fact uses LR(1) by default (though you can opt for LALR(1)), and really I hope to eventually move to something general that can handle all CFGs (like GLL, GLR, LL(*), etc).
The LALRPOP book covers all things LALRPOP -- or at least it intends to! Here are some tips:
Cargo.toml
.You really should read CONTRIBUTING.md
if you intend to change LALRPOP's own grammar.