* Move all rust crates (except lib) into crates dir, w/o nesting
* Remove stale path from .gitattributes
* Rename lib.rs files for easier navigation
* Rename mod.rs file for easier navigation
* Fix emscripten-version path
* Fix fixtures dir paths
* Use the default rustfmt settings
* Don't use nightly on CI
This reverts commit dc4e232e6e.
Reason: The sha in the generated output (which most distro builds of
tree-sitter, including `cargo install`, strip) produces too many
conflicts when verifying via CI that parsers are regenerated on every
grammar change.
This makes `parser.c` follow the https://generated.at/ convention for generated files. This potentially allows any compatible IDE to discourage editing it directly.
Problem: Linking different parsers into one executable fails due to duplicate symbols.
Solution: Mark `TSCharacterRange` as `static` when generating parsers.
fixes#4209
Introduces a new function that takes in a supertype symbol and returns
all associated subtypes. Can be used by query.c to give better errors
for invalid subtypes, as well as downstream applications like the query
LSP to give better diagnostics.
