linux-kernel - [PATCH v5 05/13] scripts: generate_rust_analyzer.py: drop `"is_proc

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Message-Id: <20250325-rust-analyzer-host-v5-5-385e7f1e1e23@gmail.com>
Date: Tue, 25 Mar 2025 16:06:28 -0400
From: Tamir Duberstein <tamird@...il.com>
To: Miguel Ojeda <ojeda@...nel.org>, Alex Gaynor <alex.gaynor@...il.com>, 
 Boqun Feng <boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>, 
 Björn Roy Baron <bjorn3_gh@...tonmail.com>, 
 Benno Lossin <benno.lossin@...ton.me>, 
 Andreas Hindborg <a.hindborg@...nel.org>, Alice Ryhl <aliceryhl@...gle.com>, 
 Trevor Gross <tmgross@...ch.edu>, Danilo Krummrich <dakr@...nel.org>, 
 Boris-Chengbiao Zhou <bobo1239@....de>, Kees Cook <kees@...nel.org>, 
 Fiona Behrens <me@...enk.dev>
Cc: rust-for-linux@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Lukas Wirth <lukas.wirth@...rous-systems.com>, 
 Tamir Duberstein <tamird@...il.com>
Subject: [PATCH v5 05/13] scripts: generate_rust_analyzer.py: drop
 `"is_proc_macro": false`

Add a dedicated `append_proc_macro_crate` function to reduce overloading
in `append_crate`. This has the effect of removing `"is_proc_macro":
false` from the output; this field is interpreted as false if absent[1]
so this doesn't change the behavior of rust-analyzer.

Link: https://github.com/rust-lang/rust-analyzer/blob/8d01570b5e812a49daa1f08404269f6ea5dd73a1/crates/project-model/src/project_json.rs#L372-L373 [1]
Signed-off-by: Tamir Duberstein <tamird@...il.com>
---
 scripts/generate_rust_analyzer.py | 55 +++++++++++++++++++++++++++------------
 1 file changed, 39 insertions(+), 16 deletions(-)

diff --git a/scripts/generate_rust_analyzer.py b/scripts/generate_rust_analyzer.py
index 71e6038964f6..80eb21c0d082 100755
--- a/scripts/generate_rust_analyzer.py
+++ b/scripts/generate_rust_analyzer.py
@@ -41,13 +41,11 @@ def generate_crates(srctree, objtree, sysroot_src, external_src, cfgs):
         deps,
         cfg=[],
         is_workspace_member=True,
-        is_proc_macro=False,
     ):
-        crate = {
+        return {
             "display_name": display_name,
             "root_module": str(root_module),
             "is_workspace_member": is_workspace_member,
-            "is_proc_macro": is_proc_macro,
             "deps": [{"crate": crates_indexes[dep], "name": dep} for dep in deps],
             "cfg": cfg,
             "edition": "2021",
@@ -55,13 +53,6 @@ def generate_crates(srctree, objtree, sysroot_src, external_src, cfgs):
                 "RUST_MODFILE": "This is only for rust-analyzer"
             }
         }
-        if is_proc_macro:
-            proc_macro_dylib_name = subprocess.check_output(
-                [os.environ["RUSTC"], "--print", "file-names", "--crate-name", display_name, "--crate-type", "proc-macro", "-"],
-                stdin=subprocess.DEVNULL,
-            ).decode('utf-8').strip()
-            crate["proc_macro_dylib_path"] = f"{objtree}/rust/{proc_macro_dylib_name}"
-        return crate
 
     def register_crate(crate):
         crates_indexes[crate["display_name"]] = len(crates)
@@ -73,14 +64,48 @@ def generate_crates(srctree, objtree, sysroot_src, external_src, cfgs):
         deps,
         cfg=[],
         is_workspace_member=True,
-        is_proc_macro=False,
     ):
         register_crate(
             build_crate(
-                display_name, root_module, deps, cfg, is_workspace_member, is_proc_macro
+                display_name,
+                root_module,
+                deps,
+                cfg,
+                is_workspace_member,
             )
         )
 
+    def append_proc_macro_crate(
+        display_name,
+        root_module,
+        deps,
+        cfg=[],
+    ):
+        crate = build_crate(display_name, root_module, deps, cfg)
+        proc_macro_dylib_name = (
+            subprocess.check_output(
+                [
+                    os.environ["RUSTC"],
+                    "--print",
+                    "file-names",
+                    "--crate-name",
+                    display_name,
+                    "--crate-type",
+                    "proc-macro",
+                    "-",
+                ],
+                stdin=subprocess.DEVNULL,
+            )
+            .decode("utf-8")
+            .strip()
+        )
+        proc_macro_crate = {
+            **crate,
+            "is_proc_macro": True,
+            "proc_macro_dylib_path": f"{objtree}/rust/{proc_macro_dylib_name}",
+        }
+        register_crate(proc_macro_crate)
+
     def append_sysroot_crate(
         display_name,
         deps,
@@ -108,11 +133,10 @@ def generate_crates(srctree, objtree, sysroot_src, external_src, cfgs):
         [],
     )
 
-    append_crate(
+    append_proc_macro_crate(
         "macros",
         srctree / "rust" / "macros" / "lib.rs",
         ["std", "proc_macro"],
-        is_proc_macro=True,
     )
 
     append_crate(
@@ -121,12 +145,11 @@ def generate_crates(srctree, objtree, sysroot_src, external_src, cfgs):
         ["core", "compiler_builtins"],
     )
 
-    append_crate(
+    append_proc_macro_crate(
         "pin_init_internal",
         srctree / "rust" / "pin-init" / "internal" / "src" / "lib.rs",
         [],
         cfg=["kernel"],
-        is_proc_macro=True,
     )
 
     append_crate(

-- 
2.49.0