From 7d312feffea91f48df73a393451ddfe364456be2 Mon Sep 17 00:00:00 2001
From: Paolo Tranquilli <redsun82@gihub.com>
Date: Fri, 21 Mar 2025 09:48:29 +0100
Subject: [PATCH] Rust: add local copy of `rust.ungrammar`

This copy is injected by the existing `//rust/ast-generator:inject-sources`
target, and is useful for development.
---
 rust/ast-generator/.gitignore  |  1 +
 rust/ast-generator/BUILD.bazel | 21 +++++++++++++++------
 rust/codegen/BUILD.bazel       |  2 +-
 3 files changed, 17 insertions(+), 7 deletions(-)

diff --git a/rust/ast-generator/.gitignore b/rust/ast-generator/.gitignore
index 16daba3cfbd..ad69d72902d 100644
--- a/rust/ast-generator/.gitignore
+++ b/rust/ast-generator/.gitignore
@@ -2,3 +2,4 @@
 /.idea
 /src/codegen/grammar.rs
 /src/codegen/grammar/
+/rust.ungram
diff --git a/rust/ast-generator/BUILD.bazel b/rust/ast-generator/BUILD.bazel
index b1b7af2ec5f..7d0105ac456 100644
--- a/rust/ast-generator/BUILD.bazel
+++ b/rust/ast-generator/BUILD.bazel
@@ -11,7 +11,7 @@ load("//misc/bazel/3rdparty/tree_sitter_extractors_deps:defs.bzl", "aliases", "a
 ra_ap_syntax_workspace, _, _ = str(ra_ap_syntax_label).partition("//")
 
 alias(
-    name = "ungram",
+    name = "rust.ungram",
     actual = "%s//:rust.ungram" % ra_ap_syntax_workspace,
     visibility = ["//rust/codegen:__pkg__"],
 )
@@ -45,9 +45,9 @@ codeql_rust_binary(
         exclude = ["src/codegen/**"],
     ) + [":codegen"],
     aliases = aliases(),
-    args = ["$(rlocationpath :ungram)"],
+    args = ["$(rlocationpath :rust.ungram)"],
     compile_data = glob(["src/templates/*.mustache"]),
-    data = [":ungram"],
+    data = [":rust.ungram"],
     proc_macro_deps = all_crate_deps(
         proc_macro = True,
     ),
@@ -69,7 +69,10 @@ write_file(
         # using cat instead of cp to honor default umask
         # (also, macOS does not support `cp --no-preserve=mode`)
         'cat "$(rlocation "$%s")" > "$DST_DIR/%s"' % item
-        for item in enumerate(_codegen_outs, 2)
+        for item in enumerate(
+            ["rust.ungram"] + _codegen_outs,
+            2,
+        )
     ],
     is_executable = True,
 )
@@ -77,8 +80,14 @@ write_file(
 sh_binary(
     name = "inject-sources",
     srcs = [":update"],
-    args = ["$(rlocationpath Cargo.toml)"] + ["$(rlocationpath %s)" % f for f in _codegen_outs],
-    data = ["Cargo.toml"] + _codegen_outs,
+    args = ["$(rlocationpath %s)" % f for f in [
+        "Cargo.toml",
+        ":rust.ungram",
+    ] + _codegen_outs],
+    data = [
+        "Cargo.toml",
+        ":rust.ungram",
+    ] + _codegen_outs,
     deps = ["//misc/bazel:sh_runfiles"],
 )
 
diff --git a/rust/codegen/BUILD.bazel b/rust/codegen/BUILD.bazel
index 5bc26aeb14f..e1b51ca3661 100644
--- a/rust/codegen/BUILD.bazel
+++ b/rust/codegen/BUILD.bazel
@@ -3,7 +3,7 @@ load("@rules_shell//shell:sh_binary.bzl", "sh_binary")
 
 _args = [
     "//rust/ast-generator",
-    "//rust/ast-generator:ungram",
+    "//rust/ast-generator:rust.ungram",
     "//rust/ast-generator:Cargo.toml",
     "//misc/codegen",
     "//rust:codegen-conf",