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
|
#!/usr/bin/env python3
"""Generate Abseil compile compile option configs.
Usage: <path_to_absl>/copts/generate_copts.py
The configs are generated from copts.py.
"""
from os import path
import sys
from copts import COPT_VARS
# Helper functions
def file_header_lines():
return [
"GENERATED! DO NOT MANUALLY EDIT THIS FILE.", "",
"(1) Edit absl/copts/copts.py.",
"(2) Run `python <path_to_absl>/copts/generate_copts.py`."
]
def flatten(*lists):
return [item for sublist in lists for item in sublist]
def relative_filename(filename):
return path.join(path.dirname(__file__), filename)
# Style classes. These contain all the syntactic styling needed to generate a
# copt file for different build tools.
class CMakeStyle(object):
"""Style object for CMake copts file."""
def separator(self):
return ""
def list_introducer(self, name):
return "list(APPEND " + name
def list_closer(self):
return ")\n"
def docstring(self):
return "\n".join((("# " + line).strip() for line in file_header_lines()))
def filename(self):
return "GENERATED_AbseilCopts.cmake"
class StarlarkStyle(object):
"""Style object for Starlark copts file."""
def separator(self):
return ","
def list_introducer(self, name):
return name + " = ["
def list_closer(self):
return "]\n"
def docstring(self):
docstring_quotes = "\"\"\""
return docstring_quotes + "\n".join(
flatten(file_header_lines(), [docstring_quotes]))
def filename(self):
return "GENERATED_copts.bzl"
def copt_list(name, arg_list, style):
"""Copt file generation."""
make_line = lambda s: " \"" + s + "\"" + style.separator()
external_str_list = [make_line(s) for s in arg_list]
return "\n".join(
flatten(
[style.list_introducer(name)],
external_str_list,
[style.list_closer()]))
def generate_copt_file(style):
"""Creates a generated copt file using the given style object.
Args:
style: either StarlarkStyle() or CMakeStyle()
"""
with open(relative_filename(style.filename()), "w") as f:
f.write(style.docstring())
f.write("\n")
for var_name, arg_list in sorted(COPT_VARS.items()):
f.write("\n")
f.write(copt_list(var_name, arg_list, style))
def main(argv):
if len(argv) > 1:
raise RuntimeError("generate_copts needs no command line args")
generate_copt_file(StarlarkStyle())
generate_copt_file(CMakeStyle())
if __name__ == "__main__":
main(sys.argv)
|
