Add resources page with links.

README.md

@@ -13,6 +13,10 @@ the Rust language. The primary audiences for the grammar are:
 The grammar tools produced here are not intended to be used directly within
 rustc, or any other existing tools.
 
+## Links
+- [Meeting notes](misc/meeting-notes.md)
+- [Resources](misc/resources.md)
+
 ## License
 
 Licensed under either of

misc/resources.md

@@ -0,0 +1,35 @@
+# Resources
+
+This is a collection of various resources that may be helpful to anyone
+looking at or working on the grammar.
+
+## Previous/Existing Grammars and Parsers
+- The truth: https://github.com/rust-lang/rust/tree/master/src/libsyntax
+- The reference: https://github.com/rust-lang-nursery/reference/
+- The old grammar: https://doc.rust-lang.org/nightly/grammar.html ([src](https://github.com/rust-lang/rust/blob/master/src/doc/grammar.md))
+- The old ANTLR grammar ([removed](https://github.com/rust-lang/rust/pull/41705)): https://github.com/rust-lang/rust/tree/12e76e24cc1466ffb2bd37cc7652a6dd7ba15735/src/grammar
+- Old flex/bison grammar ([outdated](https://github.com/rust-lang/rust/issues/32723)): https://github.com/rust-lang/rust/tree/master/src/grammar
+- Intellij's parser: https://github.com/intellij-rust/intellij-rust/blob/master/src/main/grammars/RustParser.bnf
+- jorendorff's ANTLR grammar: https://github.com/jorendorff/rust-grammar/
+- Niko's rustypop: https://github.com/nikomatsakis/rustypop
+- Haskell parser: https://github.com/harpocrates/language-rust/blob/master/src/Language/Rust/Parser/Internal.y
+
+## Grammar RFC
+The call to canonicalize the grammar.
+
+- RFC: https://github.com/rust-lang/rfcs/blob/master/text/1331-grammar-is-canonical.md
+- RFC tracker: https://github.com/rust-lang/rust/issues/30942
+- Original RFC discussion with interesting stuff: https://github.com/rust-lang/rfcs/pull/1331
+
+## New Rust Parsing Projects
+- Parser used here: https://github.com/rust-lang-nursery/gll
+  (Forked from https://github.com/lykenware/gll/)
+- Lossless syntax tree: https://github.com/matklad/rowan/
+- New front-end rust parser: https://github.com/matklad/rust-analyzer/
+
+## Testing
+Some other test suites for Rust parsing.
+
+- https://github.com/brson/ctrs
+- The old grammar bot: https://github.com/rust-lang/rust/issues/28592
+- Intellij's test suite: https://github.com/intellij-rust/intellij-rust/tree/master/src/test/resources/org/rust/lang/core/parser/fixtures