2 # SPDX-License-Identifier: GPL-2.0
3 """generate_rust_analyzer - Generates the `rust-project.json` file for `rust-analyzer`.
14 def args_crates_cfgs(cfgs):
17 crate, vals = cfg.split("=", 1)
18 crates_cfgs[crate] = vals.replace("--cfg", "").split()
22 def generate_crates(srctree, objtree, sysroot_src, external_src, cfgs):
23 # Generate the configuration list.
25 with open(objtree / "include" / "generated" / "rustc_cfg") as fd:
27 line = line.replace("--cfg=", "")
28 line = line.replace("\n", "")
31 # Now fill the crates list -- dependencies need to come first.
33 # Avoid O(n^2) iterations by keeping a map of indexes.
36 crates_cfgs = args_crates_cfgs(cfgs)
38 def append_crate(display_name, root_module, deps, cfg=[], is_workspace_member=True, is_proc_macro=False):
40 "display_name": display_name,
41 "root_module": str(root_module),
42 "is_workspace_member": is_workspace_member,
43 "is_proc_macro": is_proc_macro,
44 "deps": [{"crate": crates_indexes[dep], "name": dep} for dep in deps],
48 "RUST_MODFILE": "This is only for rust-analyzer"
52 proc_macro_dylib_name = subprocess.check_output(
53 [os.environ["RUSTC"], "--print", "file-names", "--crate-name", display_name, "--crate-type", "proc-macro", "-"],
54 stdin=subprocess.DEVNULL,
55 ).decode('utf-8').strip()
56 crate["proc_macro_dylib_path"] = f"{objtree}/rust/{proc_macro_dylib_name}"
57 crates_indexes[display_name] = len(crates)
60 # First, the ones in `rust/` since they are a bit special.
63 sysroot_src / "core" / "src" / "lib.rs",
65 cfg=crates_cfgs.get("core", []),
66 is_workspace_member=False,
71 srctree / "rust" / "compiler_builtins.rs",
77 srctree / "rust" / "macros" / "lib.rs",
84 srctree / "rust" / "build_error.rs",
85 ["core", "compiler_builtins"],
90 srctree / "rust"/ "bindings" / "lib.rs",
94 crates[-1]["env"]["OBJTREE"] = str(objtree.resolve(True))
98 srctree / "rust" / "kernel" / "lib.rs",
99 ["core", "macros", "build_error", "bindings"],
102 crates[-1]["source"] = {
104 str(srctree / "rust" / "kernel"),
105 str(objtree / "rust")
110 def is_root_crate(build_file, target):
112 return f"{target}.o" in open(build_file).read()
113 except FileNotFoundError:
116 # Then, the rest outside of `rust/`.
118 # We explicitly mention the top-level folders we want to cover.
119 extra_dirs = map(lambda dir: srctree / dir, ("samples", "drivers"))
120 if external_src is not None:
121 extra_dirs = [external_src]
122 for folder in extra_dirs:
123 for path in folder.rglob("*.rs"):
124 logging.info("Checking %s", path)
125 name = path.name.replace(".rs", "")
127 # Skip those that are not crate roots.
128 if not is_root_crate(path.parent / "Makefile", name) and \
129 not is_root_crate(path.parent / "Kbuild", name):
132 logging.info("Adding %s", name)
143 parser = argparse.ArgumentParser()
144 parser.add_argument('--verbose', '-v', action='store_true')
145 parser.add_argument('--cfgs', action='append', default=[])
146 parser.add_argument("srctree", type=pathlib.Path)
147 parser.add_argument("objtree", type=pathlib.Path)
148 parser.add_argument("sysroot", type=pathlib.Path)
149 parser.add_argument("sysroot_src", type=pathlib.Path)
150 parser.add_argument("exttree", type=pathlib.Path, nargs="?")
151 args = parser.parse_args()
154 format="[%(asctime)s] [%(levelname)s] %(message)s",
155 level=logging.INFO if args.verbose else logging.WARNING
158 # Making sure that the `sysroot` and `sysroot_src` belong to the same toolchain.
159 assert args.sysroot in args.sysroot_src.parents
162 "crates": generate_crates(args.srctree, args.objtree, args.sysroot_src, args.exttree, args.cfgs),
163 "sysroot": str(args.sysroot),
166 json.dump(rust_project, sys.stdout, sort_keys=True, indent=4)
168 if __name__ == "__main__":