1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
|
#!/usr/bin/env python3
# SPDX-License-Identifier: GPL-2.0
"""generate_rust_analyzer - Generates the `rust-project.json` file for `rust-analyzer`.
"""
import argparse
import json
import logging
import os
import pathlib
import sys
def args_crates_cfgs(cfgs):
crates_cfgs = {}
for cfg in cfgs:
crate, vals = cfg.split("=", 1)
crates_cfgs[crate] = vals.replace("--cfg", "").split()
return crates_cfgs
def generate_crates(srctree, objtree, sysroot_src, external_src, cfgs):
# Generate the configuration list.
cfg = []
with open(objtree / "include" / "generated" / "rustc_cfg") as fd:
for line in fd:
line = line.replace("--cfg=", "")
line = line.replace("\n", "")
cfg.append(line)
# Now fill the crates list -- dependencies need to come first.
#
# Avoid O(n^2) iterations by keeping a map of indexes.
crates = []
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):
crates_indexes[display_name] = len(crates)
crates.append({
"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",
"env": {
"RUST_MODFILE": "This is only for rust-analyzer"
}
})
# First, the ones in `rust/` since they are a bit special.
append_crate(
"core",
sysroot_src / "core" / "src" / "lib.rs",
[],
cfg=crates_cfgs.get("core", []),
is_workspace_member=False,
)
append_crate(
"compiler_builtins",
srctree / "rust" / "compiler_builtins.rs",
[],
)
append_crate(
"alloc",
srctree / "rust" / "alloc" / "lib.rs",
["core", "compiler_builtins"],
cfg=crates_cfgs.get("alloc", []),
)
append_crate(
"macros",
srctree / "rust" / "macros" / "lib.rs",
[],
is_proc_macro=True,
)
crates[-1]["proc_macro_dylib_path"] = f"{objtree}/rust/libmacros.so"
append_crate(
"build_error",
srctree / "rust" / "build_error.rs",
["core", "compiler_builtins"],
)
append_crate(
"bindings",
srctree / "rust"/ "bindings" / "lib.rs",
["core"],
cfg=cfg,
)
crates[-1]["env"]["OBJTREE"] = str(objtree.resolve(True))
append_crate(
"kernel",
srctree / "rust" / "kernel" / "lib.rs",
["core", "alloc", "macros", "build_error", "bindings"],
cfg=cfg,
)
crates[-1]["source"] = {
"include_dirs": [
str(srctree / "rust" / "kernel"),
str(objtree / "rust")
],
"exclude_dirs": [],
}
def is_root_crate(build_file, target):
try:
return f"{target}.o" in open(build_file).read()
except FileNotFoundError:
return False
# Then, the rest outside of `rust/`.
#
# We explicitly mention the top-level folders we want to cover.
extra_dirs = map(lambda dir: srctree / dir, ("samples", "drivers"))
if external_src is not None:
extra_dirs = [external_src]
for folder in extra_dirs:
for path in folder.rglob("*.rs"):
logging.info("Checking %s", path)
name = path.name.replace(".rs", "")
# Skip those that are not crate roots.
if not is_root_crate(path.parent / "Makefile", name) and \
not is_root_crate(path.parent / "Kbuild", name):
continue
logging.info("Adding %s", name)
append_crate(
name,
path,
["core", "alloc", "kernel"],
cfg=cfg,
)
return crates
def main():
parser = argparse.ArgumentParser()
parser.add_argument('--verbose', '-v', action='store_true')
parser.add_argument('--cfgs', action='append', default=[])
parser.add_argument("srctree", type=pathlib.Path)
parser.add_argument("objtree", type=pathlib.Path)
parser.add_argument("sysroot_src", type=pathlib.Path)
parser.add_argument("exttree", type=pathlib.Path, nargs="?")
args = parser.parse_args()
logging.basicConfig(
format="[%(asctime)s] [%(levelname)s] %(message)s",
level=logging.INFO if args.verbose else logging.WARNING
)
rust_project = {
"crates": generate_crates(args.srctree, args.objtree, args.sysroot_src, args.exttree, args.cfgs),
"sysroot_src": str(args.sysroot_src),
}
json.dump(rust_project, sys.stdout, sort_keys=True, indent=4)
if __name__ == "__main__":
main()
|
