Rust: fetch ungram and rust-analyzer code instead of checking it in

* The ungram file is now taken from the rust-analyzer dependencies
  pulled in by bazel
* the grammar parsing code is not published, so it must be taken
  directly from rust-analyzer code. That part should be less prone to be
  updated than the ungram file, so it does not necessarily need to be
  in sync with the rust-analyzer version is used elsewhere.
* both need some patches. The former is patched during build, the latter
  during loading in `MODULE.bazel`.

Author: Paolo Tranquilli

Cargo.lock

@@ -70,7 +70,22 @@ use_repo(py_deps, "vendor__anyhow-1.0.44", "vendor__cc-1.0.70", "vendor__clap-2.
 # deps for ruby+rust
 # keep in sync by running `misc/bazel/3rdparty/update_cargo_deps.sh`
 tree_sitter_extractors_deps = use_extension("//misc/bazel/3rdparty:tree_sitter_extractors_extension.bzl", "r")
-use_repo(tree_sitter_extractors_deps, "vendor__anyhow-1.0.93", "vendor__argfile-0.2.1", "vendor__chrono-0.4.38", "vendor__clap-4.5.20", "vendor__dunce-1.0.5", "vendor__either-1.13.0", "vendor__encoding-0.2.33", "vendor__figment-0.10.19", "vendor__flate2-1.0.34", "vendor__glob-0.3.1", "vendor__globset-0.4.15", "vendor__itertools-0.12.1", "vendor__itertools-0.13.0", "vendor__lazy_static-1.5.0", "vendor__log-0.4.22", "vendor__num-traits-0.2.19", "vendor__num_cpus-1.16.0", "vendor__proc-macro2-1.0.89", "vendor__quote-1.0.37", "vendor__ra_ap_base_db-0.0.248", "vendor__ra_ap_cfg-0.0.248", "vendor__ra_ap_hir-0.0.248", "vendor__ra_ap_hir_def-0.0.248", "vendor__ra_ap_hir_expand-0.0.248", "vendor__ra_ap_ide_db-0.0.248", "vendor__ra_ap_intern-0.0.248", "vendor__ra_ap_load-cargo-0.0.248", "vendor__ra_ap_parser-0.0.248", "vendor__ra_ap_paths-0.0.248", "vendor__ra_ap_project_model-0.0.248", "vendor__ra_ap_span-0.0.248", "vendor__ra_ap_stdx-0.0.248", "vendor__ra_ap_syntax-0.0.248", "vendor__ra_ap_vfs-0.0.248", "vendor__rand-0.8.5", "vendor__rayon-1.10.0", "vendor__regex-1.11.1", "vendor__serde-1.0.214", "vendor__serde_json-1.0.133", "vendor__serde_with-3.11.0", "vendor__stderrlog-0.6.0", "vendor__syn-2.0.87", "vendor__tracing-0.1.40", "vendor__tracing-subscriber-0.3.18", "vendor__tree-sitter-0.24.4", "vendor__tree-sitter-embedded-template-0.23.2", "vendor__tree-sitter-json-0.24.8", "vendor__tree-sitter-ql-0.23.1", "vendor__tree-sitter-ruby-0.23.1", "vendor__triomphe-0.1.14", "vendor__ungrammar-1.16.1")
+use_repo(tree_sitter_extractors_deps, "vendor__anyhow-1.0.94", "vendor__argfile-0.2.1", "vendor__chrono-0.4.39", "vendor__clap-4.5.23", "vendor__dunce-1.0.5", "vendor__either-1.13.0", "vendor__encoding-0.2.33", "vendor__figment-0.10.19", "vendor__flate2-1.0.35", "vendor__glob-0.3.1", "vendor__globset-0.4.15", "vendor__itertools-0.12.1", "vendor__itertools-0.13.0", "vendor__lazy_static-1.5.0", "vendor__log-0.4.22", "vendor__num-traits-0.2.19", "vendor__num_cpus-1.16.0", "vendor__proc-macro2-1.0.92", "vendor__quote-1.0.37", "vendor__ra_ap_base_db-0.0.248", "vendor__ra_ap_cfg-0.0.248", "vendor__ra_ap_hir-0.0.248", "vendor__ra_ap_hir_def-0.0.248", "vendor__ra_ap_hir_expand-0.0.248", "vendor__ra_ap_ide_db-0.0.248", "vendor__ra_ap_intern-0.0.248", "vendor__ra_ap_load-cargo-0.0.248", "vendor__ra_ap_parser-0.0.248", "vendor__ra_ap_paths-0.0.248", "vendor__ra_ap_project_model-0.0.248", "vendor__ra_ap_span-0.0.248", "vendor__ra_ap_stdx-0.0.248", "vendor__ra_ap_syntax-0.0.248", "vendor__ra_ap_vfs-0.0.248", "vendor__rand-0.8.5", "vendor__rayon-1.10.0", "vendor__regex-1.11.1", "vendor__serde-1.0.216", "vendor__serde_json-1.0.133", "vendor__serde_with-3.11.0", "vendor__stderrlog-0.6.0", "vendor__syn-2.0.90", "vendor__tracing-0.1.41", "vendor__tracing-subscriber-0.3.19", "vendor__tree-sitter-0.24.5", "vendor__tree-sitter-embedded-template-0.23.2", "vendor__tree-sitter-json-0.24.8", "vendor__tree-sitter-ql-0.23.1", "vendor__tree-sitter-ruby-0.23.1", "vendor__triomphe-0.1.14", "vendor__ungrammar-1.16.1")
+
+http_archive = use_repo_rule("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
+
+# rust-analyzer sources needed by the rust ast-generator (see `rust/ast-generator/README.md`)
+http_archive(
+    name = "rust-analyzer-src",
+    build_file = "//rust/ast-generator:BUILD.rust-analyzer-src.bazel",
+    integrity = "sha256-jl4KJmZku+ilMLnuX2NU+qa1v10IauSiDiz23sZo360=",
+    patch_args = ["-p1"],
+    patches = [
+        "//rust/ast-generator:patches/rust-analyzer.patch",
+    ],
+    strip_prefix = "rust-analyzer-2024-12-16",
+    url = "https://github.com/rust-lang/rust-analyzer/archive/refs/tags/2024-12-16.tar.gz",
+)
 
 dotnet = use_extension("@rules_dotnet//dotnet:extensions.bzl", "dotnet")
 dotnet.toolchain(dotnet_version = "9.0.100")