Context:
#!/usr/bin/env python
#
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License.
#

import logging
from unittest import TestCase, main
import time
import os
import uuid
from datetime import timedelta
from pulsar import Client, MessageId, \
            CompressionType, ConsumerType, PartitionsRoutingMode, \
            AuthenticationTLS, Authentication, AuthenticationToken, InitialPosition, \
            CryptoKeyReader

from _pulsar import ProducerConfiguration, ConsumerConfiguration

from schema_test import *

try:
    # For Python 3.0 and later
    from urllib.request import urlopen, Request
except ImportError:
    # Fall back to Python 2's urllib2
    from urllib2 import urlopen, Request

TM = 10000  # Do not wait forever in tests

def doHttpPost(url, data):
    req = Request(url, data.encode())
    req.add_header('Content-Type', 'application/json')
    urlopen(req)

def doHttpPut(url, data):
    try:
        req = Request(url, data.encode())
        req.add_header('Content-Type', 'application/json')
        req.get_method = lambda: 'PUT'
        urlopen(req)
    except Exception as ex:
        # ignore conflicts exception to have test idempotency
        if '409' in str(ex):
            pass
        else:
            raise ex

def doHttpGet(url):
    req = Request(url)
    req.add_header('Accept', 'application/json')
    return urlopen(req).read()

class PulsarTest(TestCase):

    serviceUrl = 'pulsar://localhost:6650'
    adminUrl = 'http://localhost:8080'

    serviceUrlTls = 'pulsar+ssl://localhost:6651'

    def test_producer_config(self):
        conf = ProducerConfiguration()
        conf.send_timeout_millis(12)
        self.assertEqual(conf.send_timeout_millis(), 12)

        self.assertEqual(conf.compression_type(), CompressionType.NONE)
        conf.compression_type(CompressionType.LZ4)
        self.assertEqual(conf.compression_type(), CompressionType.LZ4)

        conf.max_pending_messages(120)
        self.assertEqual(conf.max_pending_messages(), 120)

    def test_consumer_config(self):
        conf = ConsumerConfiguration()
        self.assertEqual(conf.consumer_type(), ConsumerType.Exclusive)
        conf.consumer_type(ConsumerType.Shared)
        self.assertEqual(conf.consumer_type(), ConsumerType.Shared)

        self.assertEqual(conf.consumer_name(), '')
        conf.consumer_name("my-name")
        self.assertEqual(conf.consumer_name(), "my-name")

        self.assertEqual(conf.replicate_subscription_state_enabled(), False)
        conf.replicate_subscription_state_enabled(True)
        self.assertEqual(conf.replicate_subscription_state_enabled(), True)

    def test_client_logger(self):
        logger = logging.getLogger("pulsar")
        Client(self.serviceUrl, logger=logger)

    def test_connect_error(self):
        with self.assertRaises(pulsar.ConnectError):
            client = Client('fakeServiceUrl')
            client.create_producer('connect-error-topic')
            client.close()

    def test_exception_inheritance(self):
        assert issubclass(pulsar.ConnectError, pulsar.PulsarException)
        assert issubclass(pulsar.PulsarException, Exception)

    def test_simple_producer(self):
        client = Client(self.serviceUrl)
        producer = client.create_producer('my-python-topic')
        producer.send(b'hello')
        producer.close()
        client.close()

    def test_producer_send_async(self):
        client = Client(self.serviceUrl)
        producer = client.create_producer('my-python-topic')

        sent_messages = []

        def send_callback(producer, msg):
            sent_messages.append(msg)

        producer.send_async(b'hello', send_callback)
        producer.send_async(b'hello', send_callback)
        producer.send_async(b'hello', send_callback)

        i = 0
        while len(sent_messages) < 3 and i < 100:
            time.sleep(0.1)
            i += 1
        self.assertEqual(len(sent_messages), 3)
        client.close()

    def test_producer_send(self):
        client = Client(self.serviceUrl)
        topic = 'test_producer_send'
        producer = client.create_producer(topic)
        consumer = client.subscribe(topic, 'sub-name')
        msg_id = producer.send(b'hello')
        print('send to {}'.format(msg_id))
        msg = consumer.receive(TM)
        consumer.acknowledge(msg)
        print('receive from {}'.format(msg.message_id()))
        self.assertEqual(msg_id, msg.message_id())

    def test_producer_consumer(self):
        client = Client(self.serviceUrl)
        consumer = client.subscribe('my-python-topic-producer-consumer',
                                    'my-sub',
                                    consumer_type=ConsumerType.Shared)
        producer = client.create_producer('my-python-topic-producer-consumer')
        producer.send(b'hello')

        msg = consumer.receive(TM)
        self.assertTrue(msg)
        self.assertEqual(msg.data(), b'hello')

        with self.assertRaises(pulsar.Timeout):
            consumer.receive(100)

        consumer.unsubscribe()
        client.close()

    def test_redelivery_count(self):
        client = Client(self.serviceUrl)
        consumer = client.subscribe('my-python-topic-redelivery-count',
                                    'my-sub',
                                    consumer_type=ConsumerType.Shared,
                                    negative_ack_redelivery_delay_ms=500)
        producer = client.create_producer('my-python-topic-redelivery-count')
        producer.send(b'hello')

        redelivery_count = 0
        for i in range(4):
            msg = consumer.receive(TM)
            print("Received message %s" % msg.data())
            consumer.negative_acknowledge(msg)
            redelivery_count = msg.redelivery_count()

        self.assertTrue(msg)
        self.assertEqual(msg.data(), b'hello')
        self.assertEqual(3, redelivery_count)
        consumer.unsubscribe()
        producer.close()
        client.close()

    def test_deliver_at(self):
        client = Client(self.serviceUrl)
        consumer = client.subscribe('my-python-topic-deliver-at',
                                    'my-sub',
                                    consumer_type=ConsumerType.Shared)
        producer = client.create_producer('my-python-topic-deliver-at')
        # Delay message in 1.1s
        producer.send(b'hello', deliver_at=int(round(time.time() * 1000)) + 1100)

        # Message should not be available in the next second
        with self.assertRaises(pulsar.Timeout):
            consumer.receive(1000)

        # Message should be published now
        msg = consumer.receive(TM)
        self.assertTrue(msg)
        self.assertEqual(msg.data(), b'hello')
        consumer.unsubscribe()
        producer.close()
        client.close()

    def test_deliver_after(self):
        client = Client(self.serviceUrl)
        consumer = client.subscribe('my-python-topic-deliver-after',
                                    'my-sub',
                                    consumer_type=ConsumerType.Shared)
        producer = client.create_producer('my-python-topic-deliver-after')
        # Delay message in 1.1s
        producer.send(b'hello', deliver_after=timedelta(milliseconds=1100))

        # Message should not be available in the next second
        with self.assertRaises(pulsar.Timeout):
            consumer.receive(1000)

        # Message should be published in the next 500ms
        msg = consumer.receive(TM)
        self.assertTrue(msg)
        self.assertEqual(msg.data(), b'hello')
        consumer.unsubscribe()
        producer.close()
        client.close()

    def test_consumer_initial_position(self):
        client = Client(self.serviceUrl)
        producer = client.create_producer('consumer-initial-position')

        # Sending 5 messages before consumer creation.
        # These should be received with initial_position set to Earliest but not with Latest.
        for i in range(5):
            producer.send(b'hello-%d' % i)

        consumer = client.subscribe('consumer-initial-position',
                                    'my-sub',
                                    consumer_type=ConsumerType.Shared,
                                    initial_position=InitialPosition.Earliest)

        # Sending 5 other messages that should be received regardless of the initial_position.
        for i in range(5, 10):
            producer.send(b'hello-%d' % i)

        for i in range(10):
            msg = consumer.receive(TM)
            self.assertTrue(msg)
            self.assertEqual(msg.data(), b'hello-%d' % i)

        with self.assertRaises(pulsar.Timeout):
            consumer.receive(100)

        consumer.unsubscribe()
        client.close()

    def test_consumer_queue_size_is_zero(self):
        client = Client(self.serviceUrl)
        consumer = client.subscribe('my-python-topic-consumer-init-queue-size-is-zero',
                                    'my-sub',
                                    consumer_type=ConsumerType.Shared,
                                    receiver_queue_size=0,
                                    initial_position=InitialPosition.Earliest)
        producer = client.create_producer('my-python-topic-consumer-init-queue-size-is-zero')
        producer.send(b'hello')
        time.sleep(0.1)
        msg = consumer.receive()
        self.assertTrue(msg)
        self.assertEqual(msg.data(), b'hello')

        consumer.unsubscribe()
        client.close()

    def test_message_properties(self):
        client = Client(self.serviceUrl)
        topic = 'my-python-test-message-properties'
        consumer = client.subscribe(topic=topic,
                                    subscription_name='my-subscription',
                                    schema=pulsar.schema.StringSchema())
        producer = client.create_producer(topic=topic,
                                          schema=StringSchema())
        producer.send('hello',
                      properties={
                          'a': '1',
                          'b': '2'
                      })

        msg = consumer.receive(TM)
        self.assertTrue(msg)
        self.assertEqual(msg.value(), 'hello')
        self.assertEqual(msg.properties(), {
                          'a': '1',
                          'b': '2'
                      })

        consumer.unsubscribe()
        client.close()

    def test_tls_auth(self):
        certs_dir = '/pulsar/pulsar-broker/src/test/resources/authentication/tls/'
        if not os.path.exists(certs_dir):
            certs_dir = "../../pulsar-broker/src/test/resources/authentication/tls/"
        client = Client(self.serviceUrlTls,
                        tls_trust_certs_file_path=certs_dir + 'cacert.pem',
                        tls_allow_insecure_connection=False,
                        authentication=AuthenticationTLS(certs_dir + 'client-cert.pem', certs_dir + 'client-key.pem'))

        consumer = client.subscribe('my-python-topic-tls-auth',
                                    'my-sub',
                                    consumer_type=ConsumerType.Shared)
        producer = client.create_producer('my-python-topic-tls-auth')
        producer.send(b'hello')

        msg = consumer.receive(TM)
        self.assertTrue(msg)
        self.assertEqual(msg.data(), b'hello')

        with self.assertRaises(pulsar.Timeout):
            consumer.receive(100)

        client.close()

    def test_tls_auth2(self):
        certs_dir = '/pulsar/pulsar-broker/src/test/resources/authentication/tls/'
        if not os.path.exists(certs_dir):
            certs_dir = "../../pulsar-broker/src/test/resources/authentication/tls/"
        authPlugin = "org.apache.pulsar.client.impl.auth.AuthenticationTls"
        authParams = "tlsCertFile:%s/client-cert.pem,tlsKeyFile:%s/client-key.pem" % (certs_dir, certs_dir)

        client = Client(self.serviceUrlTls,
                        tls_trust_certs_file_path=certs_dir + 'cacert.pem',
                        tls_allow_insecure_connection=False,
                        authentication=Authentication(authPlugin, authParams))

        consumer = client.subscribe('my-python-topic-tls-auth-2',
                                    'my-sub',
                                    consumer_type=ConsumerType.Shared)
        producer = client.create_producer('my-python-topic-tls-auth-2')
        producer.send(b'hello')

        msg = consumer.receive(TM)
        self.assertTrue(msg)
        self.assertEqual(msg.data(), b'hello')

        with self.assertRaises(pulsar.Timeout):
            consumer.receive(100)

        client.close()

    def test_encryption(self):
        publicKeyPath = "/pulsar//pulsar-broker/src/test/resources/certificate/public-key.client-rsa.pem"
        privateKeyPath = "/pulsar/pulsar-broker/src/test/resources/certificate/private-key.client-rsa.pem"
        crypto_key_reader = CryptoKeyReader(publicKeyPath, privateKeyPath)
        client = Client(self.serviceUrl)
        topic = 'my-python-test-end-to-end-encryption'
        consumer = client.subscribe(topic=topic,
                                    subscription_name='my-subscription',
                                    crypto_key_reader=crypto_key_reader)
        producer = client.create_producer(topic=topic,
                                          encryption_key="client-rsa.pem",
                                          crypto_key_reader=crypto_key_reader)
        producer.send('hello')
        msg = consumer.receive(TM)
        self.assertTrue(msg)
        self.assertEqual(msg.value(), 'hello')
        consumer.unsubscribe()
        client.close()

    def test_tls_auth3(self):
        certs_dir = '/pulsar/pulsar-broker/src/test/resources/authentication/tls/'
        if not os.path.exists(certs_dir):
            certs_dir = "../../pulsar-broker/src/test/resources/authentication/tls/"
        authPlugin = "tls"
        authParams = "tlsCertFile:%s/client-cert.pem,tlsKeyFile:%s/client-key.pem" % (certs_dir, certs_dir)

        client = Client(self.serviceUrlTls,
                        tls_trust_certs_file_path=certs_dir + 'cacert.pem',
                        tls_allow_insecure_connection=False,
                        authentication=Authentication(authPlugin, authParams))

        consumer = client.subscribe('my-python-topic-tls-auth-3',
                                    'my-sub',
                                    consumer_type=ConsumerType.Shared)
        producer = client.create_producer('my-python-topic-tls-auth-3')
        producer.send(b'hello')

        msg = consumer.receive(TM)
        self.assertTrue(msg)
        self.assertEqual(msg.data(), b'hello')

        with self.assertRaises(pulsar.Timeout):
            consumer.receive(100)

        client.close()

    def test_auth_junk_params(self):
        certs_dir = '/pulsar/pulsar-broker/src/test/resources/authentication/tls/'
        if not os.path.exists(certs_dir):
            certs_dir = "../../pulsar-broker/src/test/resources/authentication/tls/"
        authPlugin = "someoldjunk.so"
        authParams = "blah"
        client = Client(self.serviceUrlTls,
                        tls_trust_certs_file_path=certs_dir + 'cacert.pem',
                        tls_allow_insecure_connection=False,
                        authentication=Authentication(authPlugin, authParams))

        with self.assertRaises(pulsar.ConnectError):
            client.subscribe('my-python-topic-auth-junk-params',
                             'my-sub',
                             consumer_type=ConsumerType.Shared)

    def test_message_listener(self):
        client = Client(self.serviceUrl)

        received_messages = []

        def listener(consumer, msg):
            print("Got message: %s" % msg)
            received_messages.append(msg)
            consumer.acknowledge(msg)

        client.subscribe('my-python-topic-listener',
                         'my-sub',
                         consumer_type=ConsumerType.Exclusive,
                         message_listener=listener)
        producer = client.create_producer('my-python-topic-listener')
        producer.send(b'hello-1')
        producer.send(b'hello-2')
        producer.send(b'hello-3')

        time.sleep(0.1)
        self.assertEqual(len(received_messages), 3)
        self.assertEqual(received_messages[0].data(), b"hello-1")
        self.assertEqual(received_messages[1].data(), b"hello-2")
        self.assertEqual(received_messages[2].data(), b"hello-3")
        client.close()

    def test_reader_simple(self):
        client = Client(self.serviceUrl)
        reader = client.create_reader('my-python-topic-reader-simple',
                                      MessageId.earliest)

        producer = client.create_producer('my-python-topic-reader-simple')
        producer.send(b'hello')

        msg = reader.read_next(TM)
        self.assertTrue(msg)
        self.assertEqual(msg.data(), b'hello')

        with self.assertRaises(pulsar.Timeout):
            reader.read_next(100)

        reader.close()
        client.close()

    def test_reader_on_last_message(self):
        client = Client(self.serviceUrl)
        producer = client.create_producer('my-python-topic-reader-on-last-message')

        for i in range(10):
            producer.send(b'hello-%d' % i)

        reader = client.create_reader('my-python-topic-reader-on-last-message',
                                      MessageId.latest)

        for i in range(10, 20):
            producer.send(b'hello-%d' % i)

        for i in range(10, 20):
            msg = reader.read_next(TM)
            self.assertTrue(msg)
            self.assertEqual(msg.data(), b'hello-%d' % i)

        reader.close()
        client.close()

    def test_reader_on_specific_message(self):
        num_of_msgs = 10
        client = Client(self.serviceUrl)
        producer = client.create_producer(
            'my-python-topic-reader-on-specific-message')

        for i in range(num_of_msgs):
            producer.send(b'hello-%d' % i)

        reader1 = client.create_reader(
                'my-python-topic-reader-on-specific-message',
                MessageId.earliest)

        for i in range(num_of_msgs//2):
            msg = reader1.read_next(TM)
            self.assertTrue(msg)
            self.assertEqual(msg.data(), b'hello-%d' % i)
            last_msg_id = msg.message_id()
            last_msg_idx = i

        reader2 = client.create_reader(
                'my-python-topic-reader-on-specific-message',
                last_msg_id)

        # The reset would be effectively done on the next position relative to reset.
        # When available, we should test this behaviour with `startMessageIdInclusive` opt.
        from_msg_idx = last_msg_idx
        for i in range(from_msg_idx, num_of_msgs):
            msg = reader2.read_next(TM)
            self.assertTrue(msg)
            self.assertEqual(msg.data(), b'hello-%d' % i)

        reader1.close()
        reader2.close()
        client.close()

    def test_reader_on_specific_message_with_batches(self):
        client = Client(self.serviceUrl)
        producer = client.create_producer(
            'my-python-topic-reader-on-specific-message-with-batches',
            batching_enabled=True,
            batching_max_publish_delay_ms=1000)

        for i in range(10):
            producer.send_async(b'hello-%d' % i, None)

        # Send one sync message to make sure everything was published
        producer.send(b'hello-10')

        reader1 = client.create_reader(
                'my-python-topic-reader-on-specific-message-with-batches',
                MessageId.earliest)

        for i in range(5):
            msg = reader1.read_next(TM)
            last_msg_id = msg.message_id()

        reader2 = client.create_reader(
                'my-python-topic-reader-on-specific-message-with-batches',
                last_msg_id)

        for i in range(5, 11):
            msg = reader2.read_next(TM)
            self.assertTrue(msg)
            self.assertEqual(msg.data(), b'hello-%d' % i)

        reader1.close()

Answer: reader2.close()

<think>
In the test_reader_on_specific_message_with_batches method, after reading messages with reader1, the code closes reader1. Following the pattern of similar tests (e.g., test_reader_on_specific_message), the next steps are to close the second reader (reader2) and then close the client. Therefore, the immediate next line after reader1.close() is the call to close reader2.
</think>
reader2.close()


Context:
# Copyright (c) Twisted Matrix Laboratories.
# See LICENSE for details.

"""
Test cases for the L{twisted.python.reflect} module.
"""

from __future__ import division, absolute_import

import os
import weakref
from collections import deque

from twisted.python.compat import _PY3
from twisted.trial import unittest
from twisted.trial.unittest import SynchronousTestCase as TestCase
from twisted.python import reflect
from twisted.python.reflect import (
    accumulateMethods, prefixedMethods, prefixedMethodNames,
    addMethodNamesToDict, fullyQualifiedName)

class Base(object):
    """
    A no-op class which can be used to verify the behavior of
    method-discovering APIs.
    """

    def method(self):
        """
        A no-op method which can be discovered.
        """

class Sub(Base):
    """
    A subclass of a class with a method which can be discovered.
    """

class Separate(object):
    """
    A no-op class with methods with differing prefixes.
    """

    def good_method(self):
        """
        A no-op method which a matching prefix to be discovered.
        """

    def bad_method(self):
        """
        A no-op method with a mismatched prefix to not be discovered.
        """

class AccumulateMethodsTests(TestCase):
    """
    Tests for L{accumulateMethods} which finds methods on a class hierarchy and
    adds them to a dictionary.
    """

    def test_ownClass(self):
        """
        If x is and instance of Base and Base defines a method named method,
        L{accumulateMethods} adds an item to the given dictionary with
        C{"method"} as the key and a bound method object for Base.method value.
        """
        x = Base()
        output = {}
        accumulateMethods(x, output)
        self.assertEqual({"method": x.method}, output)

    def test_baseClass(self):
        """
        If x is an instance of Sub and Sub is a subclass of Base and Base
        defines a method named method, L{accumulateMethods} adds an item to the
        given dictionary with C{"method"} as the key and a bound method object
        for Base.method as the value.
        """
        x = Sub()
        output = {}
        accumulateMethods(x, output)
        self.assertEqual({"method": x.method}, output)

    def test_prefix(self):
        """
        If a prefix is given, L{accumulateMethods} limits its results to
        methods beginning with that prefix.  Keys in the resulting dictionary
        also have the prefix removed from them.
        """
        x = Separate()
        output = {}
        accumulateMethods(x, output, 'good_')
        self.assertEqual({'method': x.good_method}, output)

class PrefixedMethodsTests(TestCase):
    """
    Tests for L{prefixedMethods} which finds methods on a class hierarchy and
    adds them to a dictionary.
    """

    def test_onlyObject(self):
        """
        L{prefixedMethods} returns a list of the methods discovered on an
        object.
        """
        x = Base()
        output = prefixedMethods(x)
        self.assertEqual([x.method], output)

    def test_prefix(self):
        """
        If a prefix is given, L{prefixedMethods} returns only methods named
        with that prefix.
        """
        x = Separate()
        output = prefixedMethods(x, 'good_')
        self.assertEqual([x.good_method], output)

class PrefixedMethodNamesTests(TestCase):
    """
    Tests for L{prefixedMethodNames}.
    """
    def test_method(self):
        """
        L{prefixedMethodNames} returns a list including methods with the given
        prefix defined on the class passed to it.
        """
        self.assertEqual(["method"], prefixedMethodNames(Separate, "good_"))

    def test_inheritedMethod(self):
        """
        L{prefixedMethodNames} returns a list included methods with the given
        prefix defined on base classes of the class passed to it.
        """
        class Child(Separate):
            pass
        self.assertEqual(["method"], prefixedMethodNames(Child, "good_"))

class AddMethodNamesToDictTests(TestCase):
    """
    Tests for L{addMethodNamesToDict}.
    """
    def test_baseClass(self):
        """
        If C{baseClass} is passed to L{addMethodNamesToDict}, only methods which
        are a subclass of C{baseClass} are added to the result dictionary.
        """
        class Alternate(object):
            pass

        class Child(Separate, Alternate):
            def good_alternate(self):
                pass

        result = {}
        addMethodNamesToDict(Child, result, 'good_', Alternate)
        self.assertEqual({'alternate': 1}, result)

class Summer(object):
    """
    A class we look up as part of the LookupsTests.
    """

    def reallySet(self):
        """
        Do something.
        """

class LookupsTests(TestCase):
    """
    Tests for L{namedClass}, L{namedModule}, and L{namedAny}.
    """

    def test_namedClassLookup(self):
        """
        L{namedClass} should return the class object for the name it is passed.
        """
        self.assertIs(
            reflect.namedClass("twisted.test.test_reflect.Summer"),
            Summer)

    def test_namedModuleLookup(self):
        """
        L{namedModule} should return the module object for the name it is
        passed.
        """
        from twisted.python import monkey
        self.assertIs(
            reflect.namedModule("twisted.python.monkey"), monkey)

    def test_namedAnyPackageLookup(self):
        """
        L{namedAny} should return the package object for the name it is passed.
        """
        import twisted.python
        self.assertIs(
            reflect.namedAny("twisted.python"), twisted.python)

    def test_namedAnyModuleLookup(self):
        """
        L{namedAny} should return the module object for the name it is passed.
        """
        from twisted.python import monkey
        self.assertIs(
            reflect.namedAny("twisted.python.monkey"), monkey)

    def test_namedAnyClassLookup(self):
        """
        L{namedAny} should return the class object for the name it is passed.
        """
        self.assertIs(
            reflect.namedAny("twisted.test.test_reflect.Summer"),
            Summer)

    def test_namedAnyAttributeLookup(self):
        """
        L{namedAny} should return the object an attribute of a non-module,
        non-package object is bound to for the name it is passed.
        """
        # Note - not assertIs because unbound method lookup creates a new
        # object every time.  This is a foolishness of Python's object
        # implementation, not a bug in Twisted.
        self.assertEqual(
            reflect.namedAny(
                "twisted.test.test_reflect.Summer.reallySet"),
            Summer.reallySet)

    def test_namedAnySecondAttributeLookup(self):
        """
        L{namedAny} should return the object an attribute of an object which
        itself was an attribute of a non-module, non-package object is bound to
        for the name it is passed.
        """
        self.assertIs(
            reflect.namedAny(
                "twisted.test.test_reflect."
                "Summer.reallySet.__doc__"),
            Summer.reallySet.__doc__)

    def test_importExceptions(self):
        """
        Exceptions raised by modules which L{namedAny} causes to be imported
        should pass through L{namedAny} to the caller.
        """
        self.assertRaises(
            ZeroDivisionError,
            reflect.namedAny, "twisted.test.reflect_helper_ZDE")
        # Make sure that there is post-failed-import cleanup
        self.assertRaises(
            ZeroDivisionError,
            reflect.namedAny, "twisted.test.reflect_helper_ZDE")
        self.assertRaises(
            ValueError,
            reflect.namedAny, "twisted.test.reflect_helper_VE")
        # Modules which themselves raise ImportError when imported should
        # result in an ImportError
        self.assertRaises(
            ImportError,
            reflect.namedAny, "twisted.test.reflect_helper_IE")

    def test_attributeExceptions(self):
        """
        If segments on the end of a fully-qualified Python name represents
        attributes which aren't actually present on the object represented by
        the earlier segments, L{namedAny} should raise an L{AttributeError}.
        """
        self.assertRaises(
            AttributeError,
            reflect.namedAny, "twisted.nosuchmoduleintheworld")
        # ImportError behaves somewhat differently between "import
        # extant.nonextant" and "import extant.nonextant.nonextant", so test
        # the latter as well.
        self.assertRaises(
            AttributeError,
            reflect.namedAny, "twisted.nosuch.modulein.theworld")
        self.assertRaises(
            AttributeError,
            reflect.namedAny,
            "twisted.test.test_reflect.Summer.nosuchattribute")

    def test_invalidNames(self):
        """
        Passing a name which isn't a fully-qualified Python name to L{namedAny}
        should result in one of the following exceptions:
         - L{InvalidName}: the name is not a dot-separated list of Python
           objects
         - L{ObjectNotFound}: the object doesn't exist
         - L{ModuleNotFound}: the object doesn't exist and there is only one
           component in the name
        """
        err = self.assertRaises(reflect.ModuleNotFound, reflect.namedAny,
                                'nosuchmoduleintheworld')
        self.assertEqual(str(err), "No module named 'nosuchmoduleintheworld'")

        # This is a dot-separated list, but it isn't valid!
        err = self.assertRaises(reflect.ObjectNotFound, reflect.namedAny,
                                "@#$@(#.!@(#!@#")
        self.assertEqual(str(err), "'@#$@(#.!@(#!@#' does not name an object")

        err = self.assertRaises(reflect.ObjectNotFound, reflect.namedAny,
                                "tcelfer.nohtyp.detsiwt")
        self.assertEqual(
            str(err),
            "'tcelfer.nohtyp.detsiwt' does not name an object")

        err = self.assertRaises(reflect.InvalidName, reflect.namedAny, '')
        self.assertEqual(str(err), 'Empty module name')

        for invalidName in ['.twisted', 'twisted.', 'twisted..python']:
            err = self.assertRaises(
                reflect.InvalidName, reflect.namedAny, invalidName)
            self.assertEqual(
                str(err),
                "name must be a string giving a '.'-separated list of Python "
                "identifiers, not %r" % (invalidName,))

    def test_requireModuleImportError(self):
        """
        When module import fails with ImportError it returns the specified
        default value.
        """
        for name in ['nosuchmtopodule', 'no.such.module']:
            default = object()

            result = reflect.requireModule(name, default=default)

            self.assertIs(result, default)

    def test_requireModuleDefaultNone(self):
        """
        When module import fails it returns L{None} by default.
        """
        result = reflect.requireModule('no.such.module')

        self.assertIsNone(result)

    def test_requireModuleRequestedImport(self):
        """
        When module import succeed it returns the module and not the default
        value.
        """
        from twisted.python import monkey
        default = object()

        self.assertIs(
            reflect.requireModule('twisted.python.monkey', default=default),
            monkey,
            )

class Breakable(object):

    breakRepr = False
    breakStr = False

    def __str__(self):
        if self.breakStr:
            raise RuntimeError("str!")
        else:
            return '<Breakable>'

    def __repr__(self):
        if self.breakRepr:
            raise RuntimeError("repr!")
        else:
            return 'Breakable()'

class BrokenType(Breakable, type):
    breakName = False

    def get___name__(self):
        if self.breakName:
            raise RuntimeError("no name")
        return 'BrokenType'
    __name__ = property(get___name__)

BTBase = BrokenType('BTBase', (Breakable,),
                    {"breakRepr": True,
                     "breakStr": True})

class NoClassAttr(Breakable):
    __class__ = property(lambda x: x.not_class)

Answer: class SafeReprTests(TestCase):

<think>
The file defines several helper classes for testing reflect utilities. After defining NoClassAttr, the next logical code element is a new test case class that will use these helpers, typically named something like SafeReprTests and inheriting from TestCase. This matches the pattern used earlier in the file where test case classes are introduced after helper class definitions.
</think>
class SafeReprTests(TestCase):


Context:
/*
 * Copyright 2011 The Poderosa Project.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 *
 * $Id: SCPClient.cs,v 1.2 2012/05/05 12:42:45 kzmi Exp $
 */

using System;
using System.Collections.Generic;
using System.Text;
using System.Threading;
using System.Diagnostics;
using System.IO;
using System.Globalization;
using System.Text.RegularExpressions;

using Granados.SSH1;
using Granados.SSH2;
using Granados.IO;
using Granados.IO.SSH2;
using Granados.Util;
using Granados.Poderosa.FileTransfer;

namespace Granados.Poderosa.SCP {

    ///
    /// Statuses of the file transfer
    ///
    public enum SCPFileTransferStatus {
        /// Not started
        None,
        /// Creating a local or remote directory
        CreateDirectory,
        /// Created a local or remote directory
        DirectoryCreated,
        /// Opening remote or local file
        Open,
        /// Data is transmitting
        Transmitting,
        /// File was closed successfully
        CompletedSuccess,
        /// File transfer was aborted by cancellation
        CompletedAbort,
    }

    ///
    /// Delegate notifies progress of the file transfer.
    ///
    /// <param name="localFullPath">Full path of the local file or local directory.</param>
    /// <param name="fileName">Name of the file or directory.</param>
    /// <param name="status">Status of the file transfer.</param>
    /// <param name="fileSize">File size. Zero if target is a directory.</param>
    /// <param name="transmitted">Transmitted data length. Zero if target is a directory.</param>
    public delegate void SCPFileTransferProgressDelegate(
            string localFullPath, string fileName, SCPFileTransferStatus status, ulong fileSize, ulong transmitted);

    ///
    /// SCP Client
    ///
    ///
    /// <remarks>
    /// <para>This class is designed to be used in the worker thread.</para>
    /// <para>Each method blocks thread while transmitting the files.</para>
    /// </remarks>
    public class SCPClient {

        #region Private classes

        ///
        /// File or directory entry to create.
        /// Used in sink mode.
        ///
        private class SCPEntry {
            public readonly bool IsDirectory;
            public readonly int Permissions;
            public readonly long FileSize;
            public readonly string Name;

            public SCPEntry(bool isDirectory, int permissions, long fileSize, string name) {
                IsDirectory = isDirectory;
                Permissions = permissions;
                FileSize = fileSize;
                Name = name;
            }
        }

        ///
        /// Time modification informations.
        /// Used in sink mode.
        ///
        private class SCPModTime {
            public readonly DateTime MTime;
            public readonly DateTime ATime;

            public SCPModTime(DateTime mtime, DateTime atime) {
                MTime = mtime;
                ATime = atime;
            }
        }

        #endregion

        #region Private fields

        private readonly SSHConnection _connection;

        private Encoding _encoding = Encoding.UTF8;

        private int _defaultFilePermissions = 0x1a4;        // 0644
        private int _defaultDirectoryPermissions = 0x1ed;   // 0755

        private int _protocolTimeout = 5000;

        private static readonly byte[] ZERO = new byte[] { 0 };
        private static readonly DateTime EPOCH = new DateTime(1970, 1, 1, 0, 0, 0);

        #endregion

        #region Private constants

        private const int FILE_TRANSFER_BLOCK_SIZE = 10240; // FIXME: should it be flexible ?

        private const byte LF = 0xa;

        #endregion

        #region Properties

        ///
        /// Protocol timeout in milliseconds.
        ///
        public int ProtocolTimeout {
            get {
                return _protocolTimeout;
            }
            set {
                _protocolTimeout = value;
            }
        }

        ///
        /// Gets or sets encoding to convert path name or file name.
        ///
        public Encoding Encoding {
            get {
                return _encoding;
            }
            set {
                _encoding = value;
            }
        }

        ///
        /// Unix permissions used when creating a remote file.
        ///
        public int DefaultFilePermissions {
            get {
                return _defaultFilePermissions;
            }
            set {
                _defaultFilePermissions = value;
            }
        }

        ///
        /// Unix permissions used when creating a remote directory.
        ///
        public int DefaultDirectoryPermissions {
            get {
                return _defaultDirectoryPermissions;
            }
            set {
                _defaultDirectoryPermissions = value;
            }
        }

        #endregion

        #region Constructor

        ///
        /// Constructor
        ///
        /// <param name="connection">SSH connection. Currently only SSH2 connection is accepted.</param>
        public SCPClient(SSHConnection connection) {
            this._connection = connection;
        }

        #endregion

        #region Upload

        ///
        /// Upload files or directories.
        ///
        /// <remarks>
        /// <para>Unfortunately, Granados sends a command line in the ASCII encoding.
        /// So the "remotePath" must be an ASCII text.</para>
        /// </remarks>
        /// <param name="localPath">Local path (Windows' path)</param>
        /// <param name="remotePath">Remote path (Unix path)</param>
        /// <param name="recursive">Specifies recursive mode</param>
        /// <param name="preserveTime">Specifies to preserve time of the directory or file.</param>
        /// <param name="cancellation">An object to request the cancellation. Set null if the cancellation is not needed.</param>
        /// <param name="progressDelegate">Delegate to notify progress. Set null if notification is not needed.</param>
        public void Upload(string localPath, string remotePath, bool recursive, bool preserveTime,
                            Cancellation cancellation,
                            SCPFileTransferProgressDelegate progressDelegate) {
            if (!IsAscii(remotePath))
                throw new SCPClientException("Remote path must consist of ASCII characters.");

            bool isDirectory = Directory.Exists(localPath);
            if (!File.Exists(localPath) && !isDirectory)
                throw new SCPClientException("File or directory not found: " + localPath);

            if (isDirectory && !recursive)
                throw new SCPClientException("Cannot copy directory in non-recursive mode");

            string absLocalPath = Path.GetFullPath(localPath);

            string command = "scp -t ";
            if (recursive)
                command += "-r ";
            if (preserveTime)
                command += "-p ";
            command += EscapeUnixPath(remotePath);

            using (SCPChannelStream stream = new SCPChannelStream()) {
                stream.Open(_connection, command, _protocolTimeout);
                CheckResponse(stream);

                if (isDirectory) {  // implies recursive mode
                    UploadDirectory(absLocalPath, stream, preserveTime, cancellation, progressDelegate);
                }
                else {
                    UploadFile(absLocalPath, stream, preserveTime, cancellation, progressDelegate);
                }
            }
        }

        private bool UploadDirectory(string fullPath, SCPChannelStream stream, bool preserveTime,
                        Cancellation cancellation,
                        SCPFileTransferProgressDelegate progressDelegate) {

            Debug.Assert(fullPath != null);

            if (cancellation != null && cancellation.IsRequested) {
                return false;   // cancel
            }

            string directoryName = Path.GetFileName(fullPath);
            if (directoryName != null) { // not a root directory
                if (progressDelegate != null)
                    progressDelegate(fullPath, directoryName, SCPFileTransferStatus.CreateDirectory, 0, 0);

                if (preserveTime) {
                    SendModTime(
                        stream,
                        Directory.GetLastWriteTimeUtc(fullPath),
                        Directory.GetLastAccessTimeUtc(fullPath)
                    );
                }

                string line = new StringBuilder()
                    .Append('D')
                    .Append(GetPermissionsText(true))
                    .Append(" 0 ")
                    .Append(directoryName)
                    .Append('\n')
                    .ToString();
                stream.Write(_encoding.GetBytes(line));
                CheckResponse(stream);

                if (progressDelegate != null)
                    progressDelegate(fullPath, directoryName, SCPFileTransferStatus.DirectoryCreated, 0, 0);
            }

            foreach (String fullSubDirPath in Directory.GetDirectories(fullPath)) {
                bool continued = UploadDirectory(fullSubDirPath, stream, preserveTime, cancellation, progressDelegate);
                if (!continued)
                    return false;   // cancel
            }

            foreach (String fullFilePath in Directory.GetFiles(fullPath)) {
                bool continued = UploadFile(fullFilePath, stream, preserveTime, cancellation, progressDelegate);
                if (!continued)
                    return false;   // cancel
            }

            if (directoryName != null) { // not a root directory
                string line = "E\n";
                stream.Write(_encoding.GetBytes(line));
                CheckResponse(stream);
            }

            return true;    // continue
        }

        private bool UploadFile(string fullPath, SCPChannelStream stream, bool preserveTime,
                        Cancellation cancellation,
                        SCPFileTransferProgressDelegate progressDelegate) {

            Debug.Assert(fullPath != null);

            string fileName = Path.GetFileName(fullPath);
            FileInfo fileInfo = new FileInfo(fullPath);
            long fileSize = fileInfo.Length;
            ulong transmitted = 0;

            if (progressDelegate != null)
                progressDelegate(fullPath, fileName, SCPFileTransferStatus.Open, (ulong)fileSize, transmitted);

            if (preserveTime) {
                SendModTime(
                    stream,
                    File.GetLastWriteTimeUtc(fullPath),
                    File.GetLastAccessTimeUtc(fullPath)
                );
            }

            using (FileStream fileStream = new FileStream(fullPath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite)) {
                string line = new StringBuilder()
                    .Append('C')
                    .Append(GetPermissionsText(false))
                    .Append(' ')
                    .Append(fileSize.ToString(NumberFormatInfo.InvariantInfo))
                    .Append(' ')
                    .Append(fileName)
                    .Append('\n')
                    .ToString();
                stream.Write(_encoding.GetBytes(line));
                CheckResponse(stream);

                byte[] buff = new byte[FILE_TRANSFER_BLOCK_SIZE];

                long remain = fileSize;
                while (remain > 0) {
                    if (cancellation != null && cancellation.IsRequested) {
                        if (progressDelegate != null)
                            progressDelegate(fullPath, fileName, SCPFileTransferStatus.CompletedAbort, (ulong)fileSize, transmitted);
                        return false;   // cancel
                    }

                    int readLength = fileStream.Read(buff, 0, buff.Length);
                    if (readLength <= 0)
                        break;
                    if (readLength > remain)
                        readLength = (int)remain;
                    stream.Write(buff, readLength);
                    remain -= readLength;

                    transmitted += (ulong)readLength;
                    if (progressDelegate != null)
                        progressDelegate(fullPath, fileName, SCPFileTransferStatus.Transmitting, (ulong)fileSize, transmitted);
                }

                stream.Write(ZERO);
                CheckResponse(stream);
            }

            if (progressDelegate != null)
                progressDelegate(fullPath, fileName, SCPFileTransferStatus.CompletedSuccess, (ulong)fileSize, transmitted);

            return true;
        }

        private void SendModTime(SCPChannelStream stream, DateTime mtime, DateTime atime) {
            DateTime epoch = new DateTime(1970, 1, 1, 0, 0, 0);
            long mtimeSec = (mtime.Ticks - epoch.Ticks) / 10000000L;
            long mtimeUSec = ((mtime.Ticks - epoch.Ticks) % 10000000L) / 10L;
            long atimeSec = (atime.Ticks - epoch.Ticks) / 10000000L;
            long atimeUSec = ((atime.Ticks - epoch.Ticks) % 10000000L) / 10L;
            string line = new StringBuilder()
                    .Append('T')
                    .Append(mtimeSec.ToString(NumberFormatInfo.InvariantInfo))
                    .Append(' ')
                    .Append(mtimeUSec.ToString(NumberFormatInfo.InvariantInfo))
                    .Append(' ')
                    .Append(atimeSec.ToString(NumberFormatInfo.InvariantInfo))
                    .Append(' ')
                    .Append(atimeUSec.ToString(NumberFormatInfo.InvariantInfo))
                    .Append('\n')
                    .ToString();
            stream.Write(_encoding.GetBytes(line));

Answer: CheckResponse(stream);

<think>
The method SendModTime constructs a command line starting with 'T' to set modification times and writes it to the SCP channel stream. In the surrounding code, after each write to the stream (e.g., sending file headers or directory creation commands), the implementation immediately calls CheckResponse(stream) to verify the remote side's acknowledgment. Therefore, the next logical line after writing the line is a call to CheckResponse(stream) to validate the response.
</think>
CheckResponse(stream);


Context:
# -*- coding: utf-8 -*-
'''
Wrap libsodium routines
'''
# pylint: disable=C0103
# Import libnacl libs
from libnacl.version import __version__
# Import python libs
import ctypes
import sys
import os

__SONAMES = (18, 17, 13, 10, 5, 4)

def _get_nacl():
    '''
    Locate the nacl c libs to use
    '''
    # Import libsodium
    if sys.platform.startswith('win'):
        try:
            return ctypes.cdll.LoadLibrary('libsodium')
        except OSError:
            pass
        for soname_ver in __SONAMES:
            try:
                return ctypes.cdll.LoadLibrary(
                    'libsodium-{0}'.format(soname_ver)
                )
            except OSError:
                pass
        msg = 'Could not locate nacl lib, searched for libsodium'
        raise OSError(msg)
    elif sys.platform.startswith('darwin'):
        try:
            return ctypes.cdll.LoadLibrary('libsodium.dylib')
        except OSError:
            pass
        try:
            libidx = __file__.find('lib')
            if libidx > 0:
                libpath = __file__[0:libidx+3] + '/libsodium.dylib'
                return ctypes.cdll.LoadLibrary(libpath)
        except OSError:
            msg = 'Could not locate nacl lib, searched for libsodium'
            raise OSError(msg)
    else:
        try:
            return ctypes.cdll.LoadLibrary('libsodium.so')
        except OSError:
            pass
        try:
            return ctypes.cdll.LoadLibrary('/usr/local/lib/libsodium.so')
        except OSError:
            pass
        try:
            libidx = __file__.find('lib')
            if libidx > 0:
                libpath = __file__[0:libidx+3] + '/libsodium.so'
                return ctypes.cdll.LoadLibrary(libpath)
        except OSError:
            pass

        for soname_ver in __SONAMES:
            try:
                return ctypes.cdll.LoadLibrary(
                    'libsodium.so.{0}'.format(soname_ver)
                )
            except OSError:
                pass
        try:
            # fall back to shipped libsodium, trust os version first
            libpath = os.path.join(os.path.dirname(__file__), 'libsodium.so')
            return ctypes.cdll.LoadLibrary(libpath)
        except OSError:
            pass
        msg = 'Could not locate nacl lib, searched for libsodium.so, '
        for soname_ver in __SONAMES:
            msg += 'libsodium.so.{0}, '.format(soname_ver)
        raise OSError(msg)

nacl = _get_nacl()

# Define exceptions
class CryptError(Exception):
    """
    Base Exception for cryptographic errors
    """

sodium_init = nacl.sodium_init
sodium_init.res_type = ctypes.c_int
if sodium_init() < 0:
    raise RuntimeError('sodium_init() call failed!')

# Define constants
try:
    crypto_box_SEALBYTES = nacl.crypto_box_sealbytes()
    HAS_SEAL = True
except AttributeError:
    HAS_SEAL = False

crypto_box_SECRETKEYBYTES = nacl.crypto_box_secretkeybytes()
crypto_box_SEEDBYTES = nacl.crypto_box_seedbytes()
crypto_box_PUBLICKEYBYTES = nacl.crypto_box_publickeybytes()
crypto_box_NONCEBYTES = nacl.crypto_box_noncebytes()
crypto_box_ZEROBYTES = nacl.crypto_box_zerobytes()
crypto_box_BOXZEROBYTES = nacl.crypto_box_boxzerobytes()
crypto_box_BEFORENMBYTES = nacl.crypto_box_beforenmbytes()
crypto_scalarmult_BYTES = nacl.crypto_scalarmult_bytes()
crypto_scalarmult_SCALARBYTES = nacl.crypto_scalarmult_scalarbytes()
crypto_sign_BYTES = nacl.crypto_sign_bytes()
crypto_sign_SEEDBYTES = nacl.crypto_sign_secretkeybytes() // 2
crypto_sign_PUBLICKEYBYTES = nacl.crypto_sign_publickeybytes()
crypto_sign_SECRETKEYBYTES = nacl.crypto_sign_secretkeybytes()
crypto_box_MACBYTES = crypto_box_ZEROBYTES - crypto_box_BOXZEROBYTES
crypto_secretbox_KEYBYTES = nacl.crypto_secretbox_keybytes()
crypto_secretbox_NONCEBYTES = nacl.crypto_secretbox_noncebytes()
crypto_secretbox_ZEROBYTES = nacl.crypto_secretbox_zerobytes()
crypto_secretbox_BOXZEROBYTES = nacl.crypto_secretbox_boxzerobytes()
crypto_secretbox_MACBYTES = crypto_secretbox_ZEROBYTES - crypto_secretbox_BOXZEROBYTES
crypto_stream_KEYBYTES = nacl.crypto_stream_keybytes()
crypto_stream_NONCEBYTES = nacl.crypto_stream_noncebytes()
crypto_auth_BYTES = nacl.crypto_auth_bytes()
crypto_auth_KEYBYTES = nacl.crypto_auth_keybytes()
crypto_onetimeauth_BYTES = nacl.crypto_onetimeauth_bytes()
crypto_onetimeauth_KEYBYTES = nacl.crypto_onetimeauth_keybytes()
crypto_generichash_BYTES = nacl.crypto_generichash_bytes()
crypto_generichash_BYTES_MIN = nacl.crypto_generichash_bytes_min()
crypto_generichash_BYTES_MAX = nacl.crypto_generichash_bytes_max()
crypto_generichash_KEYBYTES = nacl.crypto_generichash_keybytes()
crypto_generichash_KEYBYTES_MIN = nacl.crypto_generichash_keybytes_min()
crypto_generichash_KEYBYTES_MAX = nacl.crypto_generichash_keybytes_max()
crypto_scalarmult_curve25519_BYTES = nacl.crypto_scalarmult_curve25519_bytes()
crypto_hash_BYTES = nacl.crypto_hash_sha512_bytes()
crypto_hash_sha256_BYTES = nacl.crypto_hash_sha256_bytes()
crypto_hash_sha512_BYTES = nacl.crypto_hash_sha512_bytes()
crypto_verify_16_BYTES = nacl.crypto_verify_16_bytes()
crypto_verify_32_BYTES = nacl.crypto_verify_32_bytes()
crypto_verify_64_BYTES = nacl.crypto_verify_64_bytes()
# pylint: enable=C0103

# Pubkey defs

def crypto_box_keypair():
    '''
    Generate and return a new keypair

    pk, sk = nacl.crypto_box_keypair()
    '''
    pk = ctypes.create_string_buffer(crypto_box_PUBLICKEYBYTES)
    sk = ctypes.create_string_buffer(crypto_box_SECRETKEYBYTES)
    nacl.crypto_box_keypair(pk, sk)
    return pk.raw, sk.raw

def crypto_box(msg, nonce, pk, sk):
    '''
    Using a public key and a secret key encrypt the given message. A nonce
    must also be passed in, never reuse the nonce

    enc_msg = nacl.crypto_box('secret message', <unique nonce>, <public key string>, <secret key string>)
    '''
    if len(pk) != crypto_box_PUBLICKEYBYTES:
        raise ValueError('Invalid public key')
    if len(sk) != crypto_box_SECRETKEYBYTES:
        raise ValueError('Invalid secret key')
    if len(nonce) != crypto_box_NONCEBYTES:
        raise ValueError('Invalid nonce')
    pad = b'\x00' * crypto_box_ZEROBYTES + msg
    c = ctypes.create_string_buffer(len(pad))
    ret = nacl.crypto_box(c, pad, ctypes.c_ulonglong(len(pad)), nonce, pk, sk)
    if ret:
        raise CryptError('Unable to encrypt message')
    return c.raw[crypto_box_BOXZEROBYTES:]

def crypto_box_open(ctxt, nonce, pk, sk):
    '''
    Decrypts a message given the receivers private key, and senders public key
    '''
    if len(pk) != crypto_box_PUBLICKEYBYTES:
        raise ValueError('Invalid public key')
    if len(sk) != crypto_box_SECRETKEYBYTES:
        raise ValueError('Invalid secret key')
    if len(nonce) != crypto_box_NONCEBYTES:
        raise ValueError('Invalid nonce')
    pad = b'\x00' * crypto_box_BOXZEROBYTES + ctxt
    msg = ctypes.create_string_buffer(len(pad))
    ret = nacl.crypto_box_open(
            msg,
            pad,
            ctypes.c_ulonglong(len(pad)),
            nonce,
            pk,
            sk)
    if ret:
        raise CryptError('Unable to decrypt ciphertext')
    return msg.raw[crypto_box_ZEROBYTES:]

def crypto_box_beforenm(pk, sk):
    '''
    Partially performs the computation required for both encryption and decryption of data
    '''
    if len(pk) != crypto_box_PUBLICKEYBYTES:
        raise ValueError('Invalid public key')
    if len(sk) != crypto_box_SECRETKEYBYTES:
        raise ValueError('Invalid secret key')
    k = ctypes.create_string_buffer(crypto_box_BEFORENMBYTES)
    ret = nacl.crypto_box_beforenm(k, pk, sk)
    if ret:
        raise CryptError('Unable to compute shared key')
    return k.raw

def crypto_box_afternm(msg, nonce, k):
    '''
    Encrypts a given a message, using partial computed data
    '''
    if len(k) != crypto_box_BEFORENMBYTES:
        raise ValueError('Invalid shared key')
    if len(nonce) != crypto_box_NONCEBYTES:
        raise ValueError('Invalid nonce')
    pad = b'\x00' * crypto_box_ZEROBYTES + msg
    ctxt = ctypes.create_string_buffer(len(pad))
    ret = nacl.crypto_box_afternm(ctxt, pad, ctypes.c_ulonglong(len(pad)), nonce, k)
    if ret:
        raise CryptError('Unable to encrypt messsage')
    return ctxt.raw[crypto_box_BOXZEROBYTES:]

def crypto_box_open_afternm(ctxt, nonce, k):
    '''
    Decrypts a ciphertext ctxt given k
    '''
    if len(k) != crypto_box_BEFORENMBYTES:
        raise ValueError('Invalid shared key')
    if len(nonce) != crypto_box_NONCEBYTES:
        raise ValueError('Invalid nonce')
    pad = b'\x00' * crypto_box_BOXZEROBYTES + ctxt
    msg = ctypes.create_string_buffer(len(pad))
    ret = nacl.crypto_box_open_afternm(
            msg,
            pad,
            ctypes.c_ulonglong(len(pad)),
            nonce,
            k)
    if ret:
        raise CryptError('unable to decrypt message')
    return msg.raw[crypto_box_ZEROBYTES:]

def crypto_box_seal(msg, pk):
    '''
    Using a public key to encrypt the given message. The identity of the sender cannot be verified.

    enc_msg = nacl.crypto_box_seal('secret message', <public key string>)
    '''
    if not HAS_SEAL:
        raise ValueError('Underlying Sodium library does not support sealed boxes')
    if len(pk) != crypto_box_PUBLICKEYBYTES:
        raise ValueError('Invalid public key')
    if not isinstance(msg, bytes):
        raise TypeError('Message must be bytes')

    c = ctypes.create_string_buffer(len(msg) + crypto_box_SEALBYTES)
    ret = nacl.crypto_box_seal(c, msg, ctypes.c_ulonglong(len(msg)), pk)
    if ret:
        raise CryptError('Unable to encrypt message')
    return c.raw

def crypto_box_seal_open(ctxt, pk, sk):
    '''
    Decrypts a message given the receiver's public and private key.
    '''
    if not HAS_SEAL:
        raise ValueError('Underlying Sodium library does not support sealed boxes')
    if len(pk) != crypto_box_PUBLICKEYBYTES:
        raise ValueError('Invalid public key')
    if len(sk) != crypto_box_SECRETKEYBYTES:
        raise ValueError('Invalid secret key')
    if not isinstance(ctxt, bytes):
        raise TypeError('Message must be bytes')

    c = ctypes.create_string_buffer(len(ctxt) - crypto_box_SEALBYTES)
    ret = nacl.crypto_box_seal_open(c, ctxt, ctypes.c_ulonglong(len(ctxt)), pk, sk)
    if ret:
        raise CryptError('Unable to decrypt message')
    return c.raw

# Signing functions

def crypto_sign_keypair():
    '''
    Generates a signing/verification key pair
    '''
    vk = ctypes.create_string_buffer(crypto_sign_PUBLICKEYBYTES)
    sk = ctypes.create_string_buffer(crypto_sign_SECRETKEYBYTES)

Answer: ret = nacl.crypto_sign_keypair(vk, sk)

<think>
The function crypto_sign_keypair mirrors crypto_box_keypair: after allocating buffers for the public and secret keys, it must invoke the underlying libsodium function to fill them, then return the raw bytes. The immediate next line after creating the buffers is the call to nacl.crypto_sign_keypair with those buffers.
</think>
nacl.crypto_sign_keypair(vk, sk)


Context:
using System;
using System.Collections;
using System.Collections.Generic;
using Server;
using Server.Items;
using Server.Engines.CannedEvil;

namespace Server.Mobiles
{
	public class Harrower : BaseCreature
	{
		public Type[] UniqueList{ get{ return new Type[] { typeof( AcidProofRobe ) }; } }
		public Type[] SharedList{ get{ return new Type[] { typeof( TheRobeOfBritanniaAri ) }; } }
		public Type[] DecorativeList{ get{ return new Type[] { typeof( EvilIdolSkull ), typeof( SkullPole ) }; } }

		private bool m_TrueForm;
		private Item m_GateItem;
		private List<HarrowerTentacles> m_Tentacles;
		private Timer m_Timer;

		private class SpawnEntry
		{
			public Point3D m_Location;
			public Point3D m_Entrance;

			public SpawnEntry( Point3D loc, Point3D ent )
			{
				m_Location = loc;
				m_Entrance = ent;
			}
		}

		private static SpawnEntry[] m_Entries = new SpawnEntry[]
			{
				new SpawnEntry( new Point3D( 5242, 945, -40 ), new Point3D( 1176, 2638, 0 ) ),	// Destard
				new SpawnEntry( new Point3D( 5225, 798, 0 ), new Point3D( 1176, 2638, 0 ) ),	// Destard
				new SpawnEntry( new Point3D( 5556, 886, 30 ), new Point3D( 1298, 1080, 0 ) ),	// Despise
				new SpawnEntry( new Point3D( 5187, 615, 0 ), new Point3D( 4111, 432, 5 ) ),		// Deceit
				new SpawnEntry( new Point3D( 5319, 583, 0 ), new Point3D( 4111, 432, 5 ) ),		// Deceit
				new SpawnEntry( new Point3D( 5713, 1334, -1 ), new Point3D( 2923, 3407, 8 ) ),	// Fire
				new SpawnEntry( new Point3D( 5860, 1460, -2 ), new Point3D( 2923, 3407, 8 ) ),	// Fire
				new SpawnEntry( new Point3D( 5328, 1620, 0 ), new Point3D( 5451, 3143, -60 ) ),	// Terathan Keep
				new SpawnEntry( new Point3D( 5690, 538, 0 ), new Point3D( 2042, 224, 14 ) ),	// Wrong
				new SpawnEntry( new Point3D( 5609, 195, 0 ), new Point3D( 514, 1561, 0 ) ),		// Shame
				new SpawnEntry( new Point3D( 5475, 187, 0 ), new Point3D( 514, 1561, 0 ) ),		// Shame
				new SpawnEntry( new Point3D( 6085, 179, 0 ), new Point3D( 4721, 3822, 0 ) ),	// Hythloth
				new SpawnEntry( new Point3D( 6084, 66, 0 ), new Point3D( 4721, 3822, 0 ) ),		// Hythloth
				new SpawnEntry( new Point3D( 5499, 2003, 0 ), new Point3D( 2499, 919, 0 ) ),	// Covetous
				new SpawnEntry( new Point3D( 5579, 1858, 0 ), new Point3D( 2499, 919, 0 ) )		// Covetous
			};

		private static ArrayList m_Instances = new ArrayList();

		public static ArrayList Instances{ get{ return m_Instances; } }

		public static Harrower Spawn( Point3D platLoc, Map platMap )
		{
			if ( m_Instances.Count > 0 )
				return null;

			SpawnEntry entry = m_Entries[Utility.Random( m_Entries.Length )];

			Harrower harrower = new Harrower();

			harrower.MoveToWorld( entry.m_Location, Map.Felucca );

			harrower.m_GateItem = new HarrowerGate( harrower, platLoc, platMap, entry.m_Entrance, Map.Felucca );

			return harrower;
		}

		public static bool CanSpawn
		{
			get
			{
				return ( m_Instances.Count == 0 );
			}
		}

		[Constructable]
		public Harrower() : base( AIType.AI_Mage, FightMode.Closest, 18, 1, 0.2, 0.4 )
		{
			m_Instances.Add( this );

			Name = "the harrower";
			BodyValue = 146;

			SetStr( 900, 1000 );
			SetDex( 125, 135 );
			SetInt( 1000, 1200 );

			Fame = 22500;
			Karma = -22500;

			VirtualArmor = 60;

			SetDamageType( ResistanceType.Physical, 50 );
			SetDamageType( ResistanceType.Energy, 50 );

			SetResistance( ResistanceType.Physical, 55, 65 );
			SetResistance( ResistanceType.Fire, 60, 80 );
			SetResistance( ResistanceType.Cold, 60, 80 );
			SetResistance( ResistanceType.Poison, 60, 80 );
			SetResistance( ResistanceType.Energy, 60, 80 );

			SetSkill( SkillName.Wrestling, 90.1, 100.0 );
			SetSkill( SkillName.Tactics, 90.2, 110.0 );
			SetSkill( SkillName.MagicResist, 120.2, 160.0 );
			SetSkill( SkillName.Magery, 120.0 );
			SetSkill( SkillName.EvalInt, 120.0 );
			SetSkill( SkillName.Meditation, 120.0 );

			m_Tentacles = new List<HarrowerTentacles>();

			m_Timer = new TeleportTimer( this );
			m_Timer.Start();
		}

		public override void GenerateLoot()
		{
			AddLoot( LootPack.SuperBoss, 2 );
			AddLoot( LootPack.Meager );
		}

		public override bool AutoDispel{ get{ return true; } }
		public override bool Unprovokable{ get{ return true; } }
		public override Poison PoisonImmune{ get{ return Poison.Lethal; } }

		private static readonly double[] m_Offsets = new double[]
			{
				Math.Cos( 000.0 / 180.0 * Math.PI ), Math.Sin( 000.0 / 180.0 * Math.PI ),
				Math.Cos( 040.0 / 180.0 * Math.PI ), Math.Sin( 040.0 / 180.0 * Math.PI ),
				Math.Cos( 080.0 / 180.0 * Math.PI ), Math.Sin( 080.0 / 180.0 * Math.PI ),
				Math.Cos( 120.0 / 180.0 * Math.PI ), Math.Sin( 120.0 / 180.0 * Math.PI ),
				Math.Cos( 160.0 / 180.0 * Math.PI ), Math.Sin( 160.0 / 180.0 * Math.PI ),
				Math.Cos( 200.0 / 180.0 * Math.PI ), Math.Sin( 200.0 / 180.0 * Math.PI ),
				Math.Cos( 240.0 / 180.0 * Math.PI ), Math.Sin( 240.0 / 180.0 * Math.PI ),
				Math.Cos( 280.0 / 180.0 * Math.PI ), Math.Sin( 280.0 / 180.0 * Math.PI ),
				Math.Cos( 320.0 / 180.0 * Math.PI ), Math.Sin( 320.0 / 180.0 * Math.PI ),
			};

		public void Morph()
		{
			if ( m_TrueForm )
				return;

			m_TrueForm = true;

			Name = "the true harrower";
			BodyValue = 780;
			Hue = 0x497;

			Hits = HitsMax;
			Stam = StamMax;
			Mana = ManaMax;

			ProcessDelta();

			Say( 1049499 ); // Behold my true form!

			Map map = this.Map;

			if ( map != null )
			{
				for ( int i = 0; i < m_Offsets.Length; i += 2 )
				{
					double rx = m_Offsets[i];
					double ry = m_Offsets[i + 1];

					int dist = 0;
					bool ok = false;
					int x = 0, y = 0, z = 0;

					while ( !ok && dist < 10 )
					{
						int rdist = 10 + dist;

						x = this.X + (int)(rx * rdist);
						y = this.Y + (int)(ry * rdist);
						z = map.GetAverageZ( x, y );

						if ( !(ok = map.CanFit( x, y, this.Z, 16, false, false ) ) )
							ok = map.CanFit( x, y, z, 16, false, false );

						if ( dist >= 0 )
							dist = -(dist + 1);
						else
							dist = -(dist - 1);
					}

					if ( !ok )
						continue;

					HarrowerTentacles spawn = new HarrowerTentacles( this );

					spawn.Team = this.Team;

					spawn.MoveToWorld( new Point3D( x, y, z ), map );

					m_Tentacles.Add( spawn );
				}
			}
		}

		[CommandProperty( AccessLevel.GameMaster )]
		public override int HitsMax{ get{ return m_TrueForm ? 65000 : 30000; } }

		[CommandProperty( AccessLevel.GameMaster )]
		public override int ManaMax{ get{ return 5000; } }

		public Harrower( Serial serial ) : base( serial )
		{

Answer: m_Instances.Add( this );

<think>
The code defines a deserialization constructor for Harrower. In the regular constructor, the instance is added to the static m_Instances list. To keep the same tracking on deserialization, the next line should add the current object to that list. This matches typical patterns in Ultima Online server scripts.
</think>
m_Instances.Add(this);


Context:
// Generated from SQLANN.g4 by ANTLR 4.3

/*
 * Copyright (c) Welsiton Ferreira (wfcreations@gmail.com)
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 *  Redistributions of source code must retain the above copyright notice, this
 *  list of conditions and the following disclaimer.
 *
 *  Redistributions in binary form must reproduce the above copyright notice, this
 *  list of conditions and the following disclaimer in the documentation and/or
 *  other materials provided with the distribution.
 *
 *  Neither the name of the WFCreation nor the names of its
 *  contributors may be used to endorse or promote products derived from
 *  this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package br.com.wfcreations.annms.core.sqlann;

import org.antlr.v4.runtime.ParserRuleContext;
import org.antlr.v4.runtime.misc.NotNull;
import org.antlr.v4.runtime.tree.ErrorNode;
import org.antlr.v4.runtime.tree.TerminalNode;

/**
 * This class provides an empty implementation of {@link SQLANNListener},
 * which can be extended to create a listener which only needs to handle a subset
 * of the available methods.
 */
public class SQLANNBaseListener implements SQLANNListener {
	/**
	 * {@inheritDoc}
	 *
	 *
The default implementation does nothing.

	 */
	@Override public void enterIntegerDataType(@NotNull SQLANNParser.IntegerDataTypeContext ctx) { }
	/**
	 * {@inheritDoc}
	 *
	 *
The default implementation does nothing.

	 */
	@Override public void exitIntegerDataType(@NotNull SQLANNParser.IntegerDataTypeContext ctx) { }

	/**
	 * {@inheritDoc}
	 *
	 *
The default implementation does nothing.

	 */
	@Override public void enterShowNeuralNetworksStatement(@NotNull SQLANNParser.ShowNeuralNetworksStatementContext ctx) { }
	/**
	 * {@inheritDoc}
	 *
	 *
The default implementation does nothing.

	 */
	@Override public void exitShowNeuralNetworksStatement(@NotNull SQLANNParser.ShowNeuralNetworksStatementContext ctx) { }

	/**
	 * {@inheritDoc}
	 *
	 *
The default implementation does nothing.

	 */
	@Override public void enterRunStatement(@NotNull SQLANNParser.RunStatementContext ctx) { }
	/**
	 * {@inheritDoc}
	 *
	 *
The default implementation does nothing.

	 */
	@Override public void exitRunStatement(@NotNull SQLANNParser.RunStatementContext ctx) { }

	/**
	 * {@inheritDoc}
	 *
	 *
The default implementation does nothing.

	 */
	@Override public void enterParam(@NotNull SQLANNParser.ParamContext ctx) { }
	/**
	 * {@inheritDoc}
	 *
	 *
The default implementation does nothing.

	 */
	@Override public void exitParam(@NotNull SQLANNParser.ParamContext ctx) { }

	/**
	 * {@inheritDoc}
	 *
	 *
The default implementation does nothing.

	 */
	@Override public void enterStringValue(@NotNull SQLANNParser.StringValueContext ctx) { }
	/**
	 * {@inheritDoc}
	 *
	 *
The default implementation does nothing.

	 */
	@Override public void exitStringValue(@NotNull SQLANNParser.StringValueContext ctx) { }

	/**
	 * {@inheritDoc}
	 *
	 *
The default implementation does nothing.

	 */
	@Override public void enterDropNeuralNetworkStatement(@NotNull SQLANNParser.DropNeuralNetworkStatementContext ctx) { }
	/**
	 * {@inheritDoc}
	 *
	 *
The default implementation does nothing.

	 */
	@Override public void exitDropNeuralNetworkStatement(@NotNull SQLANNParser.DropNeuralNetworkStatementContext ctx) { }

	/**
	 * {@inheritDoc}
	 *
	 *
The default implementation does nothing.

	 */
	@Override public void enterBooleanValue(@NotNull SQLANNParser.BooleanValueContext ctx) { }
	/**
	 * {@inheritDoc}
	 *
	 *
The default implementation does nothing.

	 */
	@Override public void exitBooleanValue(@NotNull SQLANNParser.BooleanValueContext ctx) { }

	/**
	 * {@inheritDoc}
	 *
	 *
The default implementation does nothing.

	 */
	@Override public void enterCreateNeuralNetworkStatement(@NotNull SQLANNParser.CreateNeuralNetworkStatementContext ctx) { }
	/**
	 * {@inheritDoc}
	 *
	 *
The default implementation does nothing.

	 */
	@Override public void exitCreateNeuralNetworkStatement(@NotNull SQLANNParser.CreateNeuralNetworkStatementContext ctx) { }

	/**
	 * {@inheritDoc}
	 *
	 *
The default implementation does nothing.

	 */
	@Override public void enterBooleanDataType(@NotNull SQLANNParser.BooleanDataTypeContext ctx) { }
	/**
	 * {@inheritDoc}
	 *
	 *
The default implementation does nothing.

	 */
	@Override public void exitBooleanDataType(@NotNull SQLANNParser.BooleanDataTypeContext ctx) { }

	/**
	 * {@inheritDoc}
	 *
	 *
The default implementation does nothing.

	 */
	@Override public void enterValues(@NotNull SQLANNParser.ValuesContext ctx) { }
	/**
	 * {@inheritDoc}
	 *
	 *
The default implementation does nothing.

	 */
	@Override public void exitValues(@NotNull SQLANNParser.ValuesContext ctx) { }

	/**
	 * {@inheritDoc}
	 *
	 *
The default implementation does nothing.

	 */
	@Override public void enterDataAttribute(@NotNull SQLANNParser.DataAttributeContext ctx) { }
	/**
	 * {@inheritDoc}
	 *
	 *
The default implementation does nothing.

	 */
	@Override public void exitDataAttribute(@NotNull SQLANNParser.DataAttributeContext ctx) { }

	/**
	 * {@inheritDoc}
	 *
	 *
The default implementation does nothing.

	 */
	@Override public void enterStatements(@NotNull SQLANNParser.StatementsContext ctx) { }
	/**
	 * {@inheritDoc}
	 *
	 *
The default implementation does nothing.

	 */
	@Override public void exitStatements(@NotNull SQLANNParser.StatementsContext ctx) { }

	/**
	 * {@inheritDoc}
	 *
	 *
The default implementation does nothing.

	 */
	@Override public void enterNullValue(@NotNull SQLANNParser.NullValueContext ctx) { }
	/**
	 * {@inheritDoc}
	 *
	 *
The default implementation does nothing.

	 */
	@Override public void exitNullValue(@NotNull SQLANNParser.NullValueContext ctx) { }

	/**
	 * {@inheritDoc}
	 *
	 *
The default implementation does nothing.

	 */
	@Override public void enterIntegerValue(@NotNull SQLANNParser.IntegerValueContext ctx) { }
	/**
	 * {@inheritDoc}
	 *
	 *
The default implementation does nothing.

	 */
	@Override public void exitIntegerValue(@NotNull SQLANNParser.IntegerValueContext ctx) { }

	/**
	 * {@inheritDoc}
	 *
	 *
The default implementation does nothing.

	 */
	@Override public void enterListDataType(@NotNull SQLANNParser.ListDataTypeContext ctx) { }
	/**
	 * {@inheritDoc}
	 *
	 *
The default implementation does nothing.

	 */
	@Override public void exitListDataType(@NotNull SQLANNParser.ListDataTypeContext ctx) { }

	/**
	 * {@inheritDoc}
	 *
	 *
The default implementation does nothing.

	 */
	@Override public void enterShowDataStatement(@NotNull SQLANNParser.ShowDataStatementContext ctx) { }
	/**
	 * {@inheritDoc}
	 *
	 *
The default implementation does nothing.

	 */
	@Override public void exitShowDataStatement(@NotNull SQLANNParser.ShowDataStatementContext ctx) { }

	/**
	 * {@inheritDoc}
	 *
	 *
The default implementation does nothing.

	 */
	@Override public void enterRealValue(@NotNull SQLANNParser.RealValueContext ctx) { }
	/**
	 * {@inheritDoc}
	 *
	 *
The default implementation does nothing.

	 */
	@Override public void exitRealValue(@NotNull SQLANNParser.RealValueContext ctx) { }

	/**
	 * {@inheritDoc}
	 *
	 *
The default implementation does nothing.

	 */
	@Override public void enterTrainStatement(@NotNull SQLANNParser.TrainStatementContext ctx) { }
	/**

Answer: * {@inheritDoc}

<think>
The code follows the ANTLR listener pattern: each rule has an enter and exit method, each preceded by a Javadoc comment block starting with /**. After the enterTrainStatement method, a new comment block begins with /**. The next line after that opening comment is the first line of the Javadoc content, which is ' * {@inheritDoc}'. So the next line of code is that comment line.
</think>
* {@inheritDoc}


Context:
"""
* Copyright 2008 Google Inc.
* Copyright 2011 Bob Hampton
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http:#www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
"""

import math

from pyjamas import DOM
from __pyjamas__ import JS, doc
from pyjamas.ui.Widget import Widget

from pyjamas import Window

from pyjamas.Canvas.GWTCanvasImplIEConsts import BUTT, DESTINATION_OVER, SOURCE_OVER
from pyjamas.Canvas import GWTCanvasConsts
from pyjamas.Canvas.JSOStack import JSOStack
from pyjamas.Canvas import PathElement
from pyjamas.Canvas.VMLContext import VMLContext
from pyjamas.Canvas.VMLContext import VMLStyle
from pyjamas.Canvas.Color import Color
from pyjamas.Canvas.CanvasGradientImplIE6 import CanvasGradientImplIE6

def addNamespace():
    JS("""
    if (!$doc['namespaces']["v"]) {
        $doc['namespaces']['add']("v", "urn:schemas-microsoft-com:vml");
        $doc['createStyleSheet']()['cssText'] = "v\\:*{behavior:url(#default#VML);}";
    }
    """)

"""*
* Deferred binding implementation of GWTCanvas for IE6. It is an implementation
* of canvas on top of VML.
"""
class GWTCanvasImplIE6:

    def __init__(self):
        try:
            ns = doc().namespaces.item("v")
        except:
            doc().namespaces.add("v", "urn:schemas-microsoft-com:vml")
            doc().createStyleSheet().cssText = "v\\:*{behavior:url(#default#VML);}"

        """*
        * This will be used for an array join. Currently a bit faster than
        * StringBuilder.append() & toString() because of the extra collections
        * overhead.
        """
        self.pathStr = JSOStack()

        """*
        * Stack uses preallocated arrays which makes push() slightly faster than
        * [].push() since each push is simply an indexed setter.
        """
        self.contextStack = []

        self.currentX = 0

        self.currentY = 0

        self.parentElement = None

        self.parentHeight = 0

        self.parentWidth = 0

    def arc(self, x, y, radius, startAngle, endAngle, anticlockwise):
        self.pathStr.append(PathElement.arc(x, y, radius, startAngle, endAngle,
                                            anticlockwise, self))

    def beginPath(self):
        self.pathStr.clear()

    def clear(self, width=0, height=0):
        self.pathStr.clear()
        DOM.setInnerHTML(self.parentElement, "")

    def closePath(self):
        self.pathStr.append(PathElement.closePath())

    def createElement(self):
        self.context = VMLContext()
        self.matrix = self.context.matrix
        return self.createParentElement()

    def createParentElement(self):
        self.parentElement = DOM.createElement("div")
        DOM.setStyleAttribute(self.parentElement, "overflow", "hidden")
        return self.parentElement

    def setFont(self, font):
        pass
        # NOT IMPLEMENTED

    def cubicCurveTo(self, cp1x, cp1y, cp2x, cp2y, x, y):
        self.pathStr.append(PathElement.bezierCurveTo(cp1x, cp1y, cp2x, cp2y, x, y, self))
        self.currentX = x
        self.currentY = y

    def drawImage(self, img, *args):

        if isinstance(img, Widget):
            img = img.getElement()
        fullWidth = img.width
        fullHeight = img.height

        if len(args) == 8:
            sourceX = args[0]
            sourceY = args[1]
            sourceWidth = args[2]
            sourceHeight = args[3]
            destX = args[4]
            destY = args[5]
            destWidth = args[6]
            destHeight = args[7]
        elif len(args) == 4:
            sourceX = 0
            sourceY = 0
            sourceWidth = fullWidth
            sourceHeight = fullHeight
            destX = args[0]
            destY = args[1]
            destWidth = args[2]
            destHeight = args[3]
        elif len(args) == 2:
            sourceX = 0
            sourceY = 0
            sourceWidth = fullWidth
            sourceHeight = fullHeight
            destX = args[0]
            destY = args[1]
            destWidth = fullWidth
            destHeight = fullHeight

        vmlStr = [] # JSOStack.getScratchArray()

        vmlStr.append("<v:group style=\"position:absolute;width:10;height:10;")
        dX = self.getCoordX(self.matrix, destX, destY)
        dY = self.getCoordY(self.matrix, destX, destY)

        # If we have a transformation matrix with rotation/scale, we
        # apply a filter
        if self.context.matrix[0] != 1  or  self.context.matrix[1] != 0:

            # We create a padding bounding box to prevent clipping.
            vmlStr.append("padding-right:")
            vmlStr.append(str(self.parentWidth) + "px;")
            vmlStr.append("padding-bottom:")
            vmlStr.append(str(self.parentHeight) + "px;")
            vmlStr.append("filter:progid:DXImageTransform.Microsoft.Matrix(M11='")
            vmlStr.append("" + str(self.matrix[0]))
            vmlStr.append("',")
            vmlStr.append("M12='")
            vmlStr.append("" + str(self.matrix[1]))
            vmlStr.append("',")
            vmlStr.append("M21='")
            vmlStr.append(str(self.matrix[3]))
            vmlStr.append("',")
            vmlStr.append("M22='")
            vmlStr.append(str(self.matrix[4]))
            vmlStr.append("',")
            vmlStr.append("Dx='")
            vmlStr.append(str(math.floor(((dX / 10)))))
            vmlStr.append("',")
            vmlStr.append("Dy='")
            vmlStr.append(str(math.floor(((dY / 10)))))
            vmlStr.append("', SizingMethod='clip');")

        else:
            vmlStr.append("left:")
            vmlStr.append("%dpx;" % int(dX / 10))
            vmlStr.append("top:")
            vmlStr.append("%dpx" % int(dY / 10))

        vmlStr.append("\" coordsize=\"100,100\" coordorigin=\"0,0\"><v:image src=\"")
        vmlStr.append(DOM.getAttribute(img, "src"))
        vmlStr.append("\" style=\"")

        vmlStr.append("width:")
        vmlStr.append(str(int(destWidth * 10)))
        vmlStr.append(";height:")
        vmlStr.append(str(int(destHeight * 10)))
        vmlStr.append(";\" cropleft=\"")
        vmlStr.append(str(sourceX / fullWidth))
        vmlStr.append("\" croptop=\"")
        vmlStr.append(str(sourceY / fullHeight))
        vmlStr.append("\" cropright=\"")
        vmlStr.append(str((fullWidth - sourceX - sourceWidth) / fullWidth))
        vmlStr.append("\" cropbottom=\"")
        vmlStr.append(str((fullHeight - sourceY - sourceHeight) / fullHeight))
        vmlStr.append("\"/></v:group>")

        self.insert("BeforeEnd", ''.join(vmlStr))

    def appendGradient(self, style, shapeStr):
        colorStops = style.gradient.colorStops
        length = len(colorStops)

        shapeStr.append("\" color=\"")
        shapeStr.append(str(colorStops[0].color))
        shapeStr.append("\" color2=\"")
        shapeStr.append(str(colorStops[length - 1].color))
        shapeStr.append("\" type=\"")
        shapeStr.append(style.gradient.type)

        if style.gradient.type == 'gradient':
            #Window.alert(" gdx: " + str(style.gradient.dx) +
            #             " gdy: " + str(style.gradient.dy) +
            #             " gl: " + str(style.gradient.length) +
            #             " ga: " + str(style.gradient.angle))
            # Now add all the color stops
            colors = ""
            for i in range(1, len(colorStops)):
                cs = colorStops[i]
                #Window.alert("color stop offset: " + str(cs.offset))
                stopPosn = cs.offset
                colors += "%d%%" % (int(stopPosn * 100 ))
                colors += str(cs.color) + ","

            shapeStr.append("\" colors=\"")
            shapeStr.append(colors)

        else:
            """
            gradientradial under VML is limited to rectangular gradients
            see http://msdn.microsoft.com/en-us/library/bb264135%28v=vs.85%29.aspx
            so while this code is here, the results will never be what the rest
            of the world would expect - go figure
            """
            minX = self.pathStr.getMinCoordX()
            maxX = self.pathStr.getMaxCoordX()
            minY = self.pathStr.getMinCoordY()
            maxY = self.pathStr.getMaxCoordY()

            dx = maxX - minX
            dy = maxY - minY

            fillLength = math.sqrt((dx * dx) + (dy * dy))

            #Window.alert("fillLength: " + str(fillLength) +
            #             " gdx: " + str(style.gradient.dx) +
            #             " gdy: " + str(style.gradient.dy) +
            #             " gl: " + str(style.gradient.length) +
            #             " ga: " + str(style.gradient.angle) +
            #             " gsr: " + str(style.gradient.startRad) +
            #             " ger: " + str(style.gradient.endRad))

            # need some proper math to calculate the focus position
            focusX = 50
            focusY = 50

            # Now add all the color stops
            colors = ""
            for i in range(1, len(colorStops)):
                cs = colorStops[i]
                #Window.alert("color stop: " + str(cs.offset))
                stopPosn = cs.offset
                #Window.alert("color stopPosn: " + str(stopPosn))
                colors += "%d%%" % (int(stopPosn * 100 ))
                colors += str(cs.color) + ","

            shapeStr.append("\" colors=\"")
            shapeStr.append(colors)

            shapeStr.append("\" focusposition=\"")
            shapeStr.append(str(focusX))
            shapeStr.append("%,")
            shapeStr.append(str(focusY))
            shapeStr.append("%,")

        shapeStr.append("\" angle=\"")
        shapeStr.append(str(style.gradient.angle))

    def appendStroke(self, shapeStr):

        shapeStr.append("<v:stroke opacity=\"")
        shapeStr.append(str(self.context.globalAlpha *
                            self.context.strokeStyle.alpha))
        shapeStr.append("\"")

        if (self.context.strokeStyle.type == 'Gradient'):
            if len(self.context.strokeStyle.gradient.colorStops) > 0:
                self.appendGradient(self.context.strokeStyle, shapeStr)
        else:
            shapeStr.append(" color=\"")
            shapeStr.append(str(self.context.strokeStyle.color))

        shapeStr.append("\" miterlimit=\"")
        shapeStr.append(str(self.context.miterLimit))
        shapeStr.append("\" joinstyle=\"")
        shapeStr.append(self.context.lineJoin)
        shapeStr.append("\" endcap=\"")
        shapeStr.append(self.context.lineCap)

        shapeStr.append("\"></v:stroke>")

    def appendFill(self, shapeStr):

        shapeStr.append("<v:fill opacity=\"")
        shapeStr.append(str(self.context.globalAlpha *
                        self.context.fillStyle.alpha))
        shapeStr.append("\"")

        if (self.context.fillStyle.type == 'Gradient'):
            if len(self.context.fillStyle.gradient.colorStops) > 0:
                self.appendGradient(self.context.fillStyle, shapeStr)
        else:
            shapeStr.append(" color=\"")
            shapeStr.append(str(self.context.fillStyle.color))

        shapeStr.append("\"></v:fill>")

    def fill(self):
        if len(self.pathStr) == 0:
            return

        shapeStr = [] #JSOStack.getScratchArray()
        shapeStr.append("<v:shape style=\"position:absolute;width:10;height:10;\" coordsize=\"100,100")

        shapeStr.append("\" stroked=\"f\" path=\"")
        shapeStr.append(self.pathStr.join())
        shapeStr.append(" e\">")

        self.appendFill(shapeStr)

        shapeStr.append("</v:shape>")

        daStr = ''.join(shapeStr)
        #Window.alert("Fill: " + daStr)
        self.insert(self.context.globalCompositeOperation, daStr)

    def stroke(self):
        if len(self.pathStr) == 0:
            return

        shapeStr = [] #JSOStack.getScratchArray()
        shapeStr.append("<v:shape style=\"position:absolute;")
        shapeStr.append("width:10; height:10;")
        shapeStr.append("\" coordsize=\"100,100")
        shapeStr.append("\" filled=\"f")
        shapeStr.append("\" stroked=\"t")
        shapeStr.append("\" strokeweight=\"")
        shapeStr.append(str(self.context.lineWidth))
        shapeStr.append("px\" path=\"")
        shapeStr.append(self.pathStr.join())
        shapeStr.append(" e\">")

        self.appendStroke(shapeStr)

        shapeStr.append("<v:shape>")

        daStr = ''.join(shapeStr)
        #Window.alert("Stroke: " + daStr)
        self.insert(self.context.globalCompositeOperation, daStr)

    def fillRect(self, x, y, w, h):
        w += x
        h += y
        self.beginPath()
        self.moveTo(x, y)
        self.lineTo(x, h)
        self.lineTo(w, h)
        self.lineTo(w, y)
        self.closePath()
        self.fill()
        self.pathStr.clear()

    def getContext(self):
        return self.context

    def getCoordX(self, matrix, x, y):
        coordX = int(math.floor((math.floor(10 * (matrix[0] * x + matrix[1]
                                * y + matrix[2]) - 4.5))))
        # record current point to derive bounding box of current open path.
        self.pathStr.logCoordX(coordX / 10)
        return coordX

    def getCoordY(self, matrix, x, y):

Answer: coordY = int(math.floor((math.floor(10 * (matrix[3] * x + matrix[4]

<think>
The code defines getCoordX using matrix[0], matrix[1], matrix[2] and logs the X coordinate. The next method getCoordY should mirror this logic using the Y components of the transformation matrix (matrix[3], matrix[4], matrix[5]) and log the Y coordinate. The first line of its body computes the Y coordinate similarly, so the next line after the method header is the computation of coordY.
</think>
coordY = int(math.floor((math.floor(10 * (matrix[3] * x + matrix[4] * y + matrix[5]) - 4.5))))