[Python-modules-commits] [python-neovim] 01/04: Imported Upstream version 0.1.0

Víctor Cuadrado Juan viccuad-guest at moszumanska.debian.org
Wed Jan 27 12:02:45 UTC 2016


This is an automated email from the git hooks/post-receive script.

viccuad-guest pushed a commit to branch master
in repository python-neovim.

commit 190a1fbfc07a540f2a6477487a1dbe2325c0671d
Author: Víctor Cuadrado Juan <me at viccuad.me>
Date:   Sat Jan 2 14:35:20 2016 +0100

    Imported Upstream version 0.1.0
---
 .gitignore                                |   7 +
 .scrutinizer.yml                          | 134 +++++++
 .travis.yml                               |  44 +++
 LICENSE                                   | 201 ++++++++++
 README.md                                 |  51 +++
 neovim/__init__.py                        | 105 ++++++
 neovim/api/__init__.py                    |  15 +
 neovim/api/buffer.py                      | 202 ++++++++++
 neovim/api/common.py                      | 265 ++++++++++++++
 neovim/api/nvim.py                        | 297 +++++++++++++++
 neovim/api/tabpage.py                     |  32 ++
 neovim/api/window.py                      |  78 ++++
 neovim/compat.py                          |  36 ++
 neovim/msgpack_rpc/__init__.py            |  41 +++
 neovim/msgpack_rpc/async_session.py       | 134 +++++++
 neovim/msgpack_rpc/event_loop/__init__.py |  16 +
 neovim/msgpack_rpc/event_loop/asyncio.py  | 120 ++++++
 neovim/msgpack_rpc/event_loop/base.py     | 171 +++++++++
 neovim/msgpack_rpc/event_loop/uv.py       | 122 +++++++
 neovim/msgpack_rpc/msgpack_stream.py      |  59 +++
 neovim/msgpack_rpc/session.py             | 204 +++++++++++
 neovim/plugin/__init__.py                 |   9 +
 neovim/plugin/decorators.py               | 149 ++++++++
 neovim/plugin/host.py                     | 192 ++++++++++
 neovim/ui/__init__.py                     |   1 +
 neovim/ui/cli.py                          |  73 ++++
 neovim/ui/gtk_ui.py                       | 587 ++++++++++++++++++++++++++++++
 neovim/ui/screen.py                       | 134 +++++++
 neovim/ui/ui_bridge.py                    | 101 +++++
 scripts/disable_log_statements.sh         |   4 +
 scripts/enable_log_statements.sh          |   4 +
 scripts/logging_statement_modifier.py     | 341 +++++++++++++++++
 scripts/publish.sh                        |   5 +
 setup.cfg                                 |   2 +
 setup.py                                  |  51 +++
 test/common.py                            |  67 ++++
 test/test_buffer.py                       | 151 ++++++++
 test/test_client_rpc.py                   |  80 ++++
 test/test_concurrency.py                  |  11 +
 test/test_events.py                       |  52 +++
 test/test_tabpage.py                      |  30 ++
 test/test_vim.py                          | 141 +++++++
 test/test_window.py                       |  96 +++++
 43 files changed, 4615 insertions(+)

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..6ea0120
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,7 @@
+*.egg-info/
+__pycache__
+neovim/ui/screen.c
+neovim/ui/screen.so
+build/
+dist/
+*.pyc
diff --git a/.scrutinizer.yml b/.scrutinizer.yml
new file mode 100644
index 0000000..ab17321
--- /dev/null
+++ b/.scrutinizer.yml
@@ -0,0 +1,134 @@
+checks:
+  python:
+    imports_relative_import: true
+    imports_wildcard_import: true
+    classes_no_self_argument: true
+    classes_bad_mcs_method_argument: true
+    classes_bad_classmethod_argument: true
+    code_rating: true
+    duplicate_code: true
+    variables_unused_variable: true
+    variables_unused_import: true
+    variables_unused_wildcard_import: true
+    variables_unused_argument: true
+    variables_global_variable_not_assigned: true
+    typecheck_redundant_keyword_arg: true
+    imports_import_self: true
+    format_superfluous_parens: true
+    exceptions_pointless_except: true
+    design_interface_not_implemented: true
+    design_abstract_class_not_used: true
+    basic_useless_else_on_loop: true
+    basic_unreachable: true
+    basic_unnecessary_pass: true
+    basic_unnecessary_lambda: true
+    basic_pointless_string_statement: true
+    basic_pointless_statement: true
+    basic_expression_not_assigned: true
+    variables_redefined_outer_name: true
+    variables_redefined_builtin: true
+    variables_redefine_in_handler: true
+    newstyle_bad_super_call: true
+    logging_not_lazy: true
+    exceptions_broad_except: true
+    exceptions_bare_except: true
+    classes_super_init_not_called: true
+    classes_protected_access: true
+    classes_non_parent_init_called: true
+    classes_bad_mcs_classmethod_argument: true
+    classes_attribute_defined_outside_init: true
+    classes_method_hidden: true
+    basic_lost_exception: true
+    basic_function_redefined: true
+    basic_exec_used: true
+    basic_eval_used: true
+    basic_dangerous_default_value: true
+    design_abstract_class_little_used: true
+    imports_deprecated_module: true
+    format_old_ne_operator: true
+    format_backtick: true
+    basic_old_raise_syntax: true
+    variables_used_before_assignment: true
+    variables_unpacking_non_sequence: true
+    variables_undefined_variable: true
+    variables_undefined_loop_variable: true
+    variables_undefined_all_variable: true
+    variables_unbalanced_tuple_unpacking: true
+    variables_no_name_in_module: true
+    variables_invalid_all_object: true
+    variables_global_variable_undefined: true
+    typecheck_unexpected_keyword_arg: true
+    typecheck_not_callable: true
+    typecheck_no_value_for_parameter: true
+    typecheck_no_member: true
+    typecheck_too_many_function_args: true
+    typecheck_missing_kwoa: true
+    typecheck_maybe_no_member: true
+    typecheck_duplicate_keyword_arg: true
+    typecheck_assignment_from_none: true
+    typecheck_assignment_from_no_return: true
+    string_unused_format_string_key: true
+    string_truncated_format_string: true
+    string_too_many_format_args: true
+    string_too_few_format_args: true
+    string_mixed_format_string: true
+    string_missing_format_string_key: true
+    string_format_needs_mapping: true
+    string_constant_anomalous_unicode_escape_in_string: true
+    string_constant_anomalous_backslash_in_string: true
+    string_bad_str_strip_call: true
+    string_bad_format_string_key: true
+    string_bad_format_character: true
+    open_mode_bad_open_mode: true
+    logging_unsupported_format: true
+    logging_too_many_args: true
+    logging_too_few_args: true
+    logging_format_truncated: true
+    imports_reimported: true
+    imports_import_error: true
+    imports_cyclic_import: true
+    exceptions_raising_string: true
+    exceptions_raising_non_exception: true
+    exceptions_raising_bad_type: true
+    exceptions_notimplemented_raised: true
+    exceptions_catching_non_exception: true
+    exceptions_bad_except_order: true
+    classes_valid_slots: true
+    classes_signature_differs: true
+    classes_non_iterator_returned: true
+    classes_no_method_argument: true
+    classes_missing_interface_method: true
+    classes_interface_is_not_class: true
+    classes_bad_staticmethod_argument: true
+    classes_bad_context_manager: true
+    classes_arguments_differ: true
+    classes_access_member_before_definition: true
+    classes_abstract_method: true
+    basic_yield_outside_function: true
+    basic_return_outside_function: true
+    basic_return_in_init: true
+    basic_return_arg_in_generator: true
+    basic_not_in_loop: true
+    basic_nonexistent_operator: true
+    basic_missing_reversed_argument: true
+    basic_missing_module_attribute: true
+    basic_init_is_generator: true
+    basic_duplicate_key: true
+    basic_duplicate_argument_name: true
+    basic_bad_reversed_sequence: true
+    basic_assert_on_tuple: true
+    basic_abstract_class_instantiated: true
+    format_lowercase_l_suffix: true
+    classes_no_self_use: true
+    classes_no_init: true
+    exceptions_binary_op_exception: true
+    variables_global_statement: true
+
+filter:
+  excluded_paths:
+    - test/*
+
+tools:
+  external_code_coverage:
+    timeout: 1200
+    runs: 6
diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 0000000..b68fb44
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,44 @@
+sudo: false
+language: python
+env:
+  global:
+    - NOSE_NOLOGCAPTURE=true
+    - NOSE_VERBOSE=2
+    - NOSE_WITH_COVERAGE=true
+    - NOSE_COVER_PACKAGE=neovim
+  matrix:
+    - CI_TARGET=tests
+matrix:
+  include:
+    - python: 2.7
+      env: CI_TARGET=flake
+    - python: 3.4
+      env: CI_TARGET=flake
+python:
+  # If the build matrix gets bigger, also update the number of runs
+  # at the bottom of .scrutinizer.yml.
+  - 2.6
+  - 2.7
+  - 3.3
+  - 3.4
+  - 3.5
+  - pypy
+before_install:
+  - if [ $CI_TARGET = tests ]; then
+      eval "$(curl -Ss https://raw.githubusercontent.com/neovim/bot-ci/master/scripts/travis-setup.sh) nightly-x64";
+      pip install -q scrutinizer-ocular;
+    else
+      pip install -q flake8 flake8-import-order flake8-docstrings pep8-naming;
+    fi
+install:
+  - pip install .
+script:
+  - if [ $CI_TARGET = tests ]; then
+      NVIM_CHILD_ARGV='["nvim", "-u", "NONE", "--embed"]' nosetests;
+    else
+      flake8 neovim;
+    fi
+after_script:
+  - if [ $CI_TARGET = tests ]; then
+      ocular;
+    fi
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..9942365
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,201 @@
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diff --git a/README.md b/README.md
new file mode 100644
index 0000000..fcfa566
--- /dev/null
+++ b/README.md
@@ -0,0 +1,51 @@
+### Python client to [Neovim](https://github.com/neovim/neovim)
+
+[![Build Status](https://travis-ci.org/neovim/python-client.svg?branch=master)](https://travis-ci.org/neovim/python-client)
+[![Scrutinizer Code Quality](https://scrutinizer-ci.com/g/neovim/python-client/badges/quality-score.png?b=master)](https://scrutinizer-ci.com/g/neovim/python-client/?branch=master)
+[![Code Coverage](https://scrutinizer-ci.com/g/neovim/python-client/badges/coverage.png?b=master)](https://scrutinizer-ci.com/g/neovim/python-client/?branch=master)
+
+Library for scripting Nvim processes through its msgpack-rpc API.
+
+#### Installation
+
+```sh
+pip install neovim
+```
+
+#### Usage through the python REPL
+
+A number of different transports are supported, but the simplest way to get
+started is with the python REPL. First, start Nvim with a known address (or
+use the `$NVIM_LISTEN_ADDRESS` of a running instance): 
+
+```sh
+$ NVIM_LISTEN_ADDRESS=/tmp/nvim nvim
+```
+
+In another terminal, connect a python REPL to Nvim (note that the API is
+similar to the one exposed by the [python-vim
+bridge](http://vimdoc.sourceforge.net/htmldoc/if_pyth.html#python-vim)):
+
+```python
+>>> from neovim import attach
+# Create a python API session attached to unix domain socket created above:
+>>> nvim = attach('socket', path='/tmp/nvim')
+# Now do some work. 
+>>> buffer = nvim.buffers[0] # Get the first buffer
+>>> buffer[0] = 'replace first line'
+>>> buffer[:] = ['replace whole buffer']
+>>> nvim.command('vsplit')
+>>> nvim.windows[1].width = 10
+>>> nvim.vars['global_var'] = [1, 2, 3]
+>>> nvim.eval('g:global_var')
+[1, 2, 3]
+```
+
+You can embed neovim into your python application instead of binding to a running neovim instance.
+
+```python
+>>> from neovim import attach
+>>> nvim = attach('child', argv=["/bin/env", "nvim", "--embed"])
+```
+
+The tests can be consulted for more examples.
diff --git a/neovim/__init__.py b/neovim/__init__.py
new file mode 100644
index 0000000..b2a0768
--- /dev/null
+++ b/neovim/__init__.py
@@ -0,0 +1,105 @@
+"""Python client for Nvim.
+
+Client library for talking with Nvim processes via it's msgpack-rpc API.
+"""
+import logging
+import os
+import sys
+
+from .api import DecodeHook, Nvim, SessionHook
+from .msgpack_rpc import (child_session, socket_session, stdio_session,
+                          tcp_session)
+from .plugin import (Host, autocmd, command, encoding, function, plugin,
+                     rpc_export, shutdown_hook)
+
+
+__all__ = ('tcp_session', 'socket_session', 'stdio_session', 'child_session',
+           'start_host', 'autocmd', 'command', 'encoding', 'function',
+           'plugin', 'rpc_export', 'Host', 'DecodeHook', 'Nvim',
+           'SessionHook', 'shutdown_hook', 'attach')
+
+
+def start_host(session=None):
+    """Promote the current process into python plugin host for Nvim.
+
+    Start msgpack-rpc event loop for `session`, listening for Nvim requests
+    and notifications. It registers Nvim commands for loading/unloading
+    python plugins.
+
+    The sys.stdout and sys.stderr streams are redirected to Nvim through
+    `session`. That means print statements probably won't work as expected
+    while this function doesn't return.
+
+    This function is normally called at program startup and could have been
+    defined as a separate executable. It is exposed as a library function for
+    testing purposes only.
+    """
+    plugins = []
+    for arg in sys.argv:
+        _, ext = os.path.splitext(arg)
+        if ext == '.py':
+            plugins.append(arg)
+
+    if not plugins:
+        sys.exit('must specify at least one plugin as argument')
+
+    logger = logging.getLogger(__name__)
+    if 'NVIM_PYTHON_LOG_FILE' in os.environ:
+        logfile = (os.environ['NVIM_PYTHON_LOG_FILE'].strip() +
+                   '_' + str(os.getpid()))
+        handler = logging.FileHandler(logfile, 'w')
+        handler.formatter = logging.Formatter(
+            '%(asctime)s [%(levelname)s @ '
+            '%(filename)s:%(funcName)s:%(lineno)s] %(process)s - %(message)s')
+        logging.root.addHandler(handler)
+        level = logging.INFO
+        if 'NVIM_PYTHON_LOG_LEVEL' in os.environ:
+            l = getattr(logging,
+                        os.environ['NVIM_PYTHON_LOG_LEVEL'].strip(),
+                        level)
+            if isinstance(l, int):
+                level = l
+        logger.setLevel(level)
+    if not session:
+        session = stdio_session()
+    host = Host(Nvim.from_session(session))
+    host.start(plugins)
+
+
+def attach(session_type, address=None, port=None, path=None, argv=None):
+    """Provide a nicer interface to create python api sessions.
+
+    Previous machinery to create python api sessions is still there. This only
+    creates a facade function to make things easier for the most usual cases.
+    Thus, instead of:
+        from neovim import socket_session, Nvim
+        session = tcp_session(address=<address>, port=<port>)
+        nvim = Nvim.from_session(session)
+    You can now do:
+        from neovim import attach
+        nvim = attach('tcp', address=<address>, port=<port>)
+    And also:
+        nvim = attach('socket', path=<path>)
+        nvim = attach('child', argv=<argv>)
+        nvim = attach('stdio')
+    """
+    session = (tcp_session(address, port) if session_type == 'tcp' else
+               socket_session(path) if session_type == 'socket' else
+               stdio_session() if session_type == 'stdio' else
+               child_session(argv) if session_type == 'child' else
+               None)
+
+    if not session:
+        raise Exception('Unknown session type "%s"' % session_type)
+
+    return Nvim.from_session(session)
+
+
+# Required for python 2.6
+class NullHandler(logging.Handler):
+    def emit(self, record):
+        pass
+
+
+if not logging.root.handlers:
+    logging.root.addHandler(NullHandler())
diff --git a/neovim/api/__init__.py b/neovim/api/__init__.py
new file mode 100644
index 0000000..10f2147
--- /dev/null
+++ b/neovim/api/__init__.py
@@ -0,0 +1,15 @@
+"""Nvim API subpackage.
+
+This package implements a higher-level API that wraps msgpack-rpc `Session`
+instances.
+"""
+
+from .buffer import Buffer
+from .common import DecodeHook, SessionHook
+from .nvim import Nvim, NvimError
+from .tabpage import Tabpage
+from .window import Window
+
+
+__all__ = ('Nvim', 'Buffer', 'Window', 'Tabpage', 'NvimError', 'SessionHook',
+           'DecodeHook')
diff --git a/neovim/api/buffer.py b/neovim/api/buffer.py
new file mode 100644
index 0000000..b3ba292
--- /dev/null
+++ b/neovim/api/buffer.py
@@ -0,0 +1,202 @@
+"""API for working with Nvim buffers."""
+from .common import Remote, RemoteMap
+from ..compat import IS_PYTHON3
+
+
+__all__ = ('Buffer')
+
+
+if IS_PYTHON3:
+    basestring = str
+
+
+class Buffer(Remote):
+
+    """A remote Nvim buffer."""
+
+    def __init__(self, session, code_data):
+        """Initialize from session and code_data immutable object.
+
+        The `code_data` contains serialization information required for
+        msgpack-rpc calls. It must be immutable for Buffer equality to work.
+        """
+        self._session = session
+        self.code_data = code_data
+        self.vars = RemoteMap(session, 'buffer_get_var', 'buffer_set_var',
+                              self)
+        self.options = RemoteMap(session, 'buffer_get_option',
+                                 'buffer_set_option', self)
+
+    def __len__(self):
+        """Return the number of lines contained in a Buffer."""
+        return self._session.request('buffer_line_count', self)
+
+    def __getitem__(self, idx):
+        """Get a buffer line or slice by integer index.
+
+        Indexes may be negative to specify positions from the end of the
+        buffer. For example, -1 is the last line, -2 is the line before that
+        and so on.
+
+        When retrieving slices, omiting indexes(eg: `buffer[:]`) will bring
+        the whole buffer.
+        """
+        if not isinstance(idx, slice):
+            return self._session.request('buffer_get_line', self, idx)
+        include_end = False
+        start = idx.start
+        end = idx.stop
+        if start is None:
+            start = 0
+        if end is None:
+            end = -1
+            include_end = True
+        return self._session.request('buffer_get_line_slice', self, start, end,
+                                     True, include_end)
+
+    def __setitem__(self, idx, lines):
+        """Replace a buffer line or slice by integer index.
+
+        Like with `__getitem__`, indexes may be negative.
+
+        When replacing slices, omiting indexes(eg: `buffer[:]`) will replace
+        the whole buffer.
+        """
+        if not isinstance(idx, slice):
+            if lines is None:
+                return self._session.request('buffer_del_line', self, idx)
+            else:
+                return self._session.request('buffer_set_line', self, idx,
+                                             lines)
+        if lines is None:
+            lines = []
+        include_end = False
+        start = idx.start
+        end = idx.stop
+        if start is None:
+            start = 0
+        if end is None:
+            end = -1
+            include_end = True
+        return self._session.request('buffer_set_line_slice', self, start, end,
+                                     True, include_end, lines)
+
+    def __iter__(self):
+        """Iterate lines of a buffer.
+
+        This will retrieve all lines locally before iteration starts. This
+        approach is used because for most cases, the gain is much greater by
+        minimizing the number of API calls by transfering all data needed to
+        work.
+        """
+        lines = self[:]
+        for line in lines:
+            yield line
+
+    def __delitem__(self, idx):
+        """Delete line or slice of lines from the buffer.
+
+        This is the same as __setitem__(idx, [])
+        """
+        if not isinstance(idx, slice):
+            self.__setitem__(idx, None)
+        else:
+            self.__setitem__(idx, [])
+
+    def get_line_slice(self, start, stop, start_incl, end_incl):
+        """More flexible wrapper for retrieving slices."""
+        return self._session.request('buffer_get_line_slice', self, start,
+                                     stop, start_incl, end_incl)
+
+    def set_line_slice(self, start, stop, start_incl, end_incl, lines):
+        """More flexible wrapper for replacing slices."""
+        return self._session.request('buffer_set_line_slice', self, start,
+                                     stop, start_incl, end_incl, lines)
+
+    def append(self, lines, index=-1):
+        """Append a string or list of lines to the buffer."""
+        if isinstance(lines, basestring):
+            lines = [lines]
+        return self._session.request('buffer_insert', self, index, lines)
+
+    def mark(self, name):
+        """Return (row, col) tuple for a named mark."""
+        return self._session.request('buffer_get_mark', self, name)
+
+    def range(self, start, end):
+        """Return a `Range` object, which represents part of the Buffer."""
+        return Range(self, start, end)
+
+    @property
+    def name(self):
+        """Get the buffer name."""
+        return self._session.request('buffer_get_name', self)
+
+    @name.setter
+    def name(self, value):
+        """Set the buffer name. BufFilePre/BufFilePost are triggered."""
+        return self._session.request('buffer_set_name', self, value)
+
+    @property
+    def valid(self):
+        """Return True if the buffer still exists."""
+        return self._session.request('buffer_is_valid', self)
+
+    @property
+    def number(self):
+        """Get the buffer number."""
+        return self._session.request('buffer_get_number', self)
+
+
+class Range(object):
+    def __init__(self, buffer, start, end):
+        self._buffer = buffer
+        self.start = start - 1
+        self.end = end
+
+    def __len__(self):
+        return self.end - self.start
+
+    def __getitem__(self, idx):
+        if not isinstance(idx, slice):
+            return self._buffer[self._normalize_index(idx)]
+        start = self._normalize_index(idx.start)
+        end = self._normalize_index(idx.stop)
+        if start is None:
+            start = self.start
+        if end is None:
+            end = self.end
+        return self._buffer[start:end]
+
+    def __setitem__(self, idx, lines):
+        if not isinstance(idx, slice):
+            self._buffer[self._normalize_index(idx)] = lines
+            return
+        start = self._normalize_index(idx.start)
+        end = self._normalize_index(idx.stop)
+        if start is None:
+            start = self.start
+        if end is None:
+            end = self.end
+        self._buffer[start:end] = lines
+
+    def __iter__(self):
+        for i in range(self.start, self.end):
+            yield self._buffer[i]
+
+    def append(self, lines, i=None):
+        i = self._normalize_index(i)
+        if i is None:
+            i = self.end
+        self._buffer.append(lines, i)
+
+    def _normalize_index(self, index):
+        if index is None:
+            return None
+        if index < 0:
+            index = self.end - 1
+        else:
+            index += self.start
+            if index >= self.end:
+                index = self.end - 1
+        return index
diff --git a/neovim/api/common.py b/neovim/api/common.py
new file mode 100644
index 0000000..3a456e3
--- /dev/null
+++ b/neovim/api/common.py
@@ -0,0 +1,265 @@
+"""Code shared between the API classes."""
+
+
+class Remote(object):
+
+    """Base class for Nvim objects(buffer/window/tabpage).
+
+    Each type of object has it's own specialized class with API wrappers around
+    the msgpack-rpc session. This implements equality which takes the remote
+    object handle into consideration.
+    """
+
+    def __eq__(self, other):
+        """Return True if `self` and `other` are the same object."""
+        return (hasattr(other, 'code_data') and
+                other.code_data == self.code_data)
+
+    def __hash__(self):
+        """Return hash based on remote object id."""
+        return self.code_data.__hash__()
+
+
+class RemoteMap(object):
+
+    """Represents a string->object map stored in Nvim.
+
+    This is the dict counterpart to the `RemoteSequence` class, but it is used
+    as a generic way of retrieving values from the various map-like data
+    structures present in Nvim.
+
+    It is used to provide a dict-like API to vim variables and options.
+    """
+
+    def __init__(self, session, get_method, set_method, self_obj=None):
+        """Initialize a RemoteMap with session, getter/setter and self_obj."""
+        self._get = _wrap(session, get_method, self_obj)
+        self._set = None
+        if set_method:
+            self._set = _wrap(session, set_method, self_obj)
+
+    def __getitem__(self, key):
+        """Return a map value by key."""
+        return self._get(key)
+
+    def __setitem__(self, key, value):
+        """Set a map value by key(if the setter was provided)."""
+        if not self._set:
+            raise TypeError('This dict is read-only')
+        self._set(key, value)
+
+    def __delitem__(self, key):
+        """Delete a map value by associating None with the key."""
+        if not self._set:
+            raise TypeError('This dict is read-only')
+        return self._set(key, None)
+
+    def __contains__(self, key):
+        """Check if key is present in the map."""
+        try:
+            self._get(key)
+            return True
+        except Exception:
+            return False
+
+    def get(self, key, default=None):
+        """Return value for key if present, else a default value."""
+        try:
+            return self._get(key)
+        except Exception:
+            return default
+
+
+class RemoteSequence(object):
+
+    """Represents a sequence of objects stored in Nvim.
+
+    This class is used to wrap msgapck-rpc functions that work on Nvim
+    sequences(of lines, buffers, windows and tabpages) with an API that
+    is similar to the one provided by the python-vim interface.
+
+    For example, the 'buffers' property of the `Nvim class is a RemoteSequence
+    sequence instance, and the expression `nvim.buffers[0]` is translated to
+    session.request('vim_get_buffers')[0].
+
+    It can also receive an optional self_obj that will be passed as first
+    argument of the request. For example, `tabpage.windows[0]` is translated
+    to: session.request('tabpage_get_windows', tabpage_instance)[0].
+
+    One important detail about this class is that all methods will fetch the
+    sequence into a list and perform the necessary manipulation
+    locally(iteration, indexing, counting, etc).
+    """
+
+    def __init__(self, session, method, self_obj=None):
+        """Initialize a RemoteSequence with session, method and self_obj."""
+        self._fetch = _wrap(session, method, self_obj)
+
+    def __len__(self):
+        """Return the length of the remote sequence."""
+        return len(self._fetch())
+
+    def __getitem__(self, idx):
+        """Return a sequence item by index."""
+        if not isinstance(idx, slice):
+            return self._fetch()[idx]
+        return self._fetch()[idx.start:idx.stop]
+
+    def __iter__(self):
+        """Return an iterator for the sequence."""
+        items = self._fetch()
+        for item in items:
+            yield item
+
+    def __contains__(self, item):
+        """Check if an item is present in the sequence."""
+        return item in self._fetch()
+
+
+def _identity(obj, session, method, kind):
+    return obj
+
+
+class SessionHook(object):
+
+    """Pair of functions to filter objects coming/going from/to Nvim.
+
+    Filter functions receive the following arguments:
+
+    - obj: The object to process
+    - session: The current session object
+    - method: The method name
+    - kind: Kind of filter, can be one of:
+        - 'request' for requests coming from Nvim
+        - 'notification' for notifications coming from Nvim
+        - 'out-request' for requests going to Nvim
+
... 3924 lines suppressed ...

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