pyshyacc.py 文件源码

def p_error(p):
    msg = []
    w = msg.append
    w('%r\n' % p)
    w('followed by:\n')
    for i in range(5):
        n = yacc.token()
        if not n:
            break
        w('  %r\n' % n)
    raise sherrors.ShellSyntaxError(''.join(msg))

# Build the parser