def p_error(p):
def find_column(input, lexpos):
last_cr = input.rfind('\n', 0, lexpos)
if last_cr < 0:
last_cr = 0
column = (lexpos - last_cr) + 1
return column
if parser.recover_errors:
if p is None:
e = yacc.YaccSymbol()
e.type = 'error'
e.value = None
e.lineno = 0
e.lexpos = lexer.lexpos
parser.errok()
return e
else:
while lexer.lexstatestack:
lexer.pop_state()
if not p:
raise SyntaxError("Parse error")
column = find_column(parser.input, p.lexpos)
raise SyntaxError("Invalid token '{0}' at line {1}, column {2}".format(
p.value, p.lineno, column))
def p_error(p):
if parser.recover_errors:
if p is None:
e = yacc.YaccSymbol()
e.type = 'error'
e.value = None
e.lineno = 0
e.lexpos = lexer.lexpos
parser.errok()
return e
else:
if not p:
raise SyntaxError("Parse error")
raise SyntaxError("Invalid token '{0}' at line {1}, column {2}".format(
p.value, p.lineno, p.lexpos))
def parse(script):
parser = yacc.yacc()
# parser.restart() is broken, so
sym = yacc.YaccSymbol()
sym.type = '$end'
parser.symstack = [sym]
parser.statestack = [0]
parser.state = None
parser.token = None
try:
parser.parse(script, lexer=lexer)
except LexError as e:
raise PwsSyntaxError(e)
return last_eval
def token(token_type):
t = yacc.YaccSymbol()
t.type = token_type
t.value = None
return t