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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")
parser.add_argument(
"--graph",
type=argparse.FileType("w"),
action="store",
metavar="GRAPH_OUTPUT_FILE",
help="Dumps a DOT representation of the generated automata in a file",
)
args = parser.parse_args()
p = ParserGenerator(
args.grammar, args.tokens, verbose=args.verbose, graph_file=args.graph
)
grammar = p.make_grammar()
grammar.produce_graminit_h(args.graminit_h.write)
grammar.produce_graminit_c(args.graminit_c.write)
if __name__ == "__main__":
main()
|
