def parse_file(parser, word_word, debug = 0):
symbol = word_word.symbol
filename = word_word.get_filename()
# Is this really necessary?
name, ext = os.path.splitext(os.path.basename(filename))
assert ext == '.ucl', "unknown file extension on: " + filename
assert name == word_word.name, \
'%s != %s: internal error' % (name, word_word.name)
args = parser_init.parse(parser, scanner, filename, debug = debug,
extra_arg = (symbol, parser.token_dict))
if args is not None:
return True, args
return False, ()
def genparser(filename, rules, token_dict, output_file = sys.stdout):
metaparser.Output_file = output_file
metaparser.output("""
# parser.py
from ucc.parser import scanner_init
from ucc.database import ast
start = 'file'
precedence = (
('left', 'OR'),
('left', 'AND'),
('right', 'NOT'),
('left', '<', 'LE', 'EQ', 'NE', '>', 'GE'),
('left', 'ARG_LEFT_WORD'),
('right', 'ARG_RIGHT_WORD'),
('left', '+', '-'),
('right', '/'),
('left', '%'),
('left', '*'),
('left', 'BIT_OR'),
('left', 'BIT_XOR'),
('left', 'BIT_AND'),
('right', 'NEGATE', 'BIT_NOT'),
('nonassoc', ')', ']'),
('left', '.'),
)
token_dict = {
""",
output_file = output_file)
for item in sorted(token_dict.iteritems()):
print >> output_file, " %r: %r," % item
print >> output_file, "}\n"
tokens = sorted(parser_init.parse(metaparser, metascanner, filename,
extra_files = (('rules', rules),))
.union(scanner.tokens))
metaparser.output("""
def p_error(t):
if t is None:
raise SyntaxError("invalid syntax",
scanner_init.syntaxerror_params())
else:
raise SyntaxError("invalid syntax",
scanner_init.syntaxerror_params(t))
""",
output_file = output_file)
s = "tokens = %r" % tokens
i = s.rfind(',', 0, 79)
while len(s) > 79 and i >= 0:
print >> output_file, s[:i + 1]
s = ' ' + s[i + 1:].lstrip()
i = s.rfind(',', 0, 79)
print >> output_file, s
metaparser.output("""
def init():
pass
""",
output_file = output_file)
