Merge #5572

5572: Switch to ungrammar from ast_src r=matklad a=matklad

The primary advantage of ungrammar is that it (eventually) allows one
to describe concrete syntax tree structure -- with alternatives and
specific sequence of tokens & nodes.

That should be re-usable for:

* generate `make` calls
* Rust reference
* Hypothetical parser's evented API

We loose doc comments for the time being unfortunately. I don't think
we should add support for doc comments to ungrammar -- they'll make
grammar file hard to read. We might supply docs as out-of band info,
or maybe just via a reference, but we'll think about that once things
are no longer in flux



bors r+
🤖

Co-authored-by: Aleksey Kladov <[email protected]>

1 files changed, 7 insertions, 0 deletions

diff --git a/Cargo.lock b/Cargo.lock
index ff225399e..b7a9516e3 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1750,6 +1750,12 @@ dependencies = [
 ]
 
 [[package]]
+name = "ungrammar"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0ee12e4891ab3acc2d95d5023022ace22020247bb8a8d1ece875a443f7dab37d"
+
+[[package]]
 name = "unicode-bidi"
 version = "0.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -1893,5 +1899,6 @@ dependencies = [
  "pico-args",
  "proc-macro2",
  "quote",
+ "ungrammar",
  "walkdir",
 ]