Extract helpers from `append_crate` to avoid the need to peek into
`crates[-1]`. This improves readability.

Suggested-by: Trevor Gross <tmgross@umich.edu>
Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com>
Tested-by: Daniel Almeida <daniel.almeida@collabora.com>
Reviewed-by: Fiona Behrens <me@kloenk.dev>
Reviewed-by: Trevor Gross <tmgross@umich.edu>
Signed-off-by: Tamir Duberstein <tamird@gmail.com>
---
 scripts/generate_rust_analyzer.py | 35 ++++++++++++++++++++++++++++++-----
 1 file changed, 30 insertions(+), 5 deletions(-)

diff --git a/scripts/generate_rust_analyzer.py b/scripts/generate_rust_analyzer.py
index 828e7797d253..74f7ab5541a1 100755
--- a/scripts/generate_rust_analyzer.py
+++ b/scripts/generate_rust_analyzer.py
@@ -35,7 +35,14 @@ def generate_crates(srctree, objtree, sysroot_src, external_src, cfgs):
     crates_indexes = {}
     crates_cfgs = args_crates_cfgs(cfgs)
 
-    def append_crate(display_name, root_module, deps, cfg=[], is_workspace_member=True, is_proc_macro=False):
+    def build_crate(
+        display_name,
+        root_module,
+        deps,
+        cfg=[],
+        is_workspace_member=True,
+        is_proc_macro=False,
+    ):
         crate = {
             "display_name": display_name,
             "root_module": str(root_module),
@@ -54,9 +61,26 @@ def generate_crates(srctree, objtree, sysroot_src, external_src, cfgs):
                 stdin=subprocess.DEVNULL,
             ).decode('utf-8').strip()
             crate["proc_macro_dylib_path"] = f"{objtree}/rust/{proc_macro_dylib_name}"
-        crates_indexes[display_name] = len(crates)
+        return crate
+
+    def register_crate(crate):
+        crates_indexes[crate["display_name"]] = len(crates)
         crates.append(crate)
 
+    def append_crate(
+        display_name,
+        root_module,
+        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
+            )
+        )
+
     def append_sysroot_crate(
         display_name,
         deps,
@@ -122,20 +146,21 @@ def generate_crates(srctree, objtree, sysroot_src, external_src, cfgs):
         display_name,
         deps,
     ):
-        append_crate(
+        crate = build_crate(
             display_name,
             srctree / "rust" / display_name / "lib.rs",
             deps,
             cfg=cfg,
         )
-        crates[-1]["env"]["OBJTREE"] = str(objtree.resolve(True))
-        crates[-1]["source"] = {
+        crate["env"]["OBJTREE"] = str(objtree.resolve(True))
+        crate["source"] = {
             "include_dirs": [
                 str(srctree / "rust" / display_name),
                 str(objtree / "rust")
             ],
             "exclude_dirs": [],
         }
+        register_crate(crate)
 
     append_crate_with_generated("bindings", ["core", "ffi"])
     append_crate_with_generated("uapi", ["core", "ffi"])

-- 
2.49.0