mirror of https://github.com/python/cpython
34 lines
1019 B
Python
34 lines
1019 B
Python
import argparse
|
|
|
|
from .pgen import ParserGenerator
|
|
|
|
|
|
def main():
|
|
parser = argparse.ArgumentParser(description="Parser generator main program.")
|
|
parser.add_argument(
|
|
"grammar", type=str, help="The file with the grammar definition in EBNF format"
|
|
)
|
|
parser.add_argument("tokens", type=str, help="The file with the token definitions")
|
|
parser.add_argument(
|
|
"graminit_h",
|
|
type=argparse.FileType("w"),
|
|
help="The path to write the grammar's non-terminals as #defines",
|
|
)
|
|
parser.add_argument(
|
|
"graminit_c",
|
|
type=argparse.FileType("w"),
|
|
help="The path to write the grammar as initialized data",
|
|
)
|
|
|
|
parser.add_argument("--verbose", "-v", action="count")
|
|
args = parser.parse_args()
|
|
|
|
p = ParserGenerator(args.grammar, args.tokens, verbose=args.verbose)
|
|
grammar = p.make_grammar()
|
|
grammar.produce_graminit_h(args.graminit_h.write)
|
|
grammar.produce_graminit_c(args.graminit_c.write)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
main()
|