fc8dc48020
git-subtree-dir: third_party/abseil_cpp git-subtree-mainline:ffb2ae54begit-subtree-split:768eb2ca28
109 lines
2.4 KiB
Python
Executable file
109 lines
2.4 KiB
Python
Executable file
#!/usr/bin/python
|
|
"""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)
|