def run():
g = Grammar.from_file('rhapsody.pg')
this_folder = dirname(__file__)
parser = GLRParser(g)
# Small file
parser.parse_file(join(this_folder, 'test_inputs', 'LightSwitch.rpy'))
# Large file
parser.parse_file(join(this_folder, 'test_inputs',
'LightSwitchDouble.rpy'))
def trace(ctx, grammar_file, input_file, input):
if not (input_file or input):
prints('Expected either input_file or input string.')
sys.exit(1)
colors = ctx.obj['colors']
grammar, table = check_get_grammar_table(grammar_file, True, colors)
parser = GLRParser(grammar,
debug=True,
debug_trace=True,
debug_colors=colors)
if input:
parser.parse(input)
else:
parser.parse_file(input_file)
def trace(ctx, grammar_file, input_file, input):
if not (input_file or input):
prints('Expected either input_file or input string.')
sys.exit(1)
colors = ctx.obj['colors']
prefer_shifts = ctx.obj['prefer_shifts']
prefer_shifts_over_empty = ctx.obj['prefer_shifts_over_empty']
grammar, table = compile_get_grammar_table(grammar_file, True, colors,
prefer_shifts,
prefer_shifts_over_empty)
parser = GLRParser(grammar, debug=True, debug_trace=True,
debug_colors=colors, prefer_shifts=prefer_shifts,
prefer_shifts_over_empty=prefer_shifts_over_empty)
if input:
parser.parse(input)
else:
parser.parse_file(input_file)
def main(debug=False):
this_folder = os.path.dirname(__file__)
g = Grammar.from_file(os.path.join(this_folder, 'c.pg'),
re_flags=re.MULTILINE | re.VERBOSE)
parser = GLRParser(g, debug=debug, debug_colors=True)
# The input is C code after preprocessing
forest = parser.parse_file(os.path.join(this_folder, 'example.c'))
print('Solutions: ', len(forest))
print('Ambiguities: ', forest.ambiguities)
def parse(ctx, grammar_file, input_file, input, glr, recovery, dot, positions):
if not (input_file or input):
prints('Expected either input_file or input string.')
sys.exit(1)
colors = ctx.obj['colors']
debug = ctx.obj['debug']
prefer_shifts = ctx.obj['prefer_shifts']
prefer_shifts_over_empty = ctx.obj['prefer_shifts_over_empty']
grammar = Grammar.from_file(grammar_file, debug=debug, debug_colors=colors)
if glr:
parser = GLRParser(grammar,
debug=False,
debug_colors=colors,
error_recovery=recovery,
prefer_shifts=prefer_shifts,
prefer_shifts_over_empty=prefer_shifts_over_empty)
else:
parser = Parser(grammar,
build_tree=True,
debug=False,
debug_colors=colors,
error_recovery=recovery,
prefer_shifts=prefer_shifts,
prefer_shifts_over_empty=prefer_shifts_over_empty)
if input:
result = parser.parse(input)
else:
result = parser.parse_file(input_file)
if glr:
print(f'Solutions:{result.solutions}')
print(f'Ambiguities:{result.ambiguities}')
if recovery:
print(f'Errors: {len(parser.errors)}')
for error in parser.errors:
print('\t', str(error))
if glr and result.solutions > 1:
print('Printing the forest:\n')
result = result
else:
print('Printing the parse tree:\n')
print(result.to_str())
if dot:
f_name = 'forest.dot' if glr and result.solutions > 1 else 'tree.dot'
with open(f_name, 'w') as f:
f.write(result.to_dot(positions))
print('Created dot file ', f_name)
def main(debug=False):
this_folder = os.path.dirname(__file__)
g = Grammar.from_file(os.path.join(this_folder, 'java16.pg'))
parser = GLRParser(g, debug=debug, debug_colors=True)
file_name = os.path.join(this_folder, 'TomcatServletWebServerFactory.java')
file_size = os.path.getsize(file_name)
t_start = time.time()
forest = parser.parse_file(file_name)
t_end = time.time()
print('Elapsed time: {:.2f}'.format(t_end - t_start), 'sec')
print('Speed = {:.2f}'.format(file_size / 1000 / (t_end - t_start)),
'KB/sec\n')
print('Solutions: ', forest.solutions)
print('Ambiguities: ', forest.ambiguities)