dotfiles/vim/plugins/deoplete.nvim/rplugin/python3/deoplete/child.py

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2018-04-05 13:06:54 +02:00
# ============================================================================
# FILE: child.py
# AUTHOR: Shougo Matsushita <Shougo.Matsu at gmail.com>
# License: MIT license
# ============================================================================
import copy
import os.path
import re
import sys
import time
import msgpack
from collections import defaultdict
import deoplete.source # noqa
import deoplete.filter # noqa
from deoplete import logger
from deoplete.exceptions import SourceInitError
from deoplete.util import (bytepos2charpos, charpos2bytepos, error, error_tb,
import_plugin,
get_buffer_config, get_custom,
get_syn_names, convert2candidates, uniq_list_dict)
class Child(logger.LoggingMixin):
def __init__(self, vim):
self.name = 'child'
self._vim = vim
self._filters = {}
self._sources = {}
self._custom = []
self._profile_flag = None
self._profile_start_time = 0
self._loaded_sources = {}
self._loaded_filters = {}
self._source_errors = defaultdict(int)
self._prev_results = {}
self._unpacker = msgpack.Unpacker(
encoding='utf-8',
unicode_errors='surrogateescape')
self._packer = msgpack.Packer(
use_bin_type=True,
encoding='utf-8',
unicode_errors='surrogateescape')
self._ignore_sources = []
def main_loop(self, stdout):
while True:
feed = sys.stdin.buffer.raw.read(102400)
if feed is None:
continue
if feed == b'':
# EOF
return
self._unpacker.feed(feed)
self.debug('_read: %d bytes', len(feed))
for child_in in self._unpacker:
name = child_in['name']
args = child_in['args']
queue_id = child_in['queue_id']
self.debug('main_loop: %s begin', name)
ret = self.main(name, args, queue_id)
if ret:
self._write(stdout, ret)
self.debug('main_loop: end')
def main(self, name, args, queue_id):
ret = None
if name == 'enable_logging':
self._enable_logging()
elif name == 'add_source':
self._add_source(args[0])
elif name == 'add_filter':
self._add_filter(args[0])
elif name == 'set_source_attributes':
self._set_source_attributes(args[0])
elif name == 'set_custom':
self._set_custom(args[0])
elif name == 'on_event':
self._on_event(args[0])
elif name == 'merge_results':
ret = self._merge_results(args[0], queue_id)
return ret
def _write(self, stdout, expr):
stdout.buffer.write(self._packer.pack(expr))
stdout.flush()
def _enable_logging(self):
logging = self._vim.vars['deoplete#_logging']
logger.setup(self._vim, logging['level'], logging['logfile'])
self.is_debug_enabled = True
def _add_source(self, path):
source = None
try:
Source = import_plugin(path, 'source', 'Source')
if not Source:
return
source = Source(self._vim)
name = os.path.splitext(os.path.basename(path))[0]
source.name = getattr(source, 'name', name)
source.path = path
if source.name in self._loaded_sources:
# Duplicated name
error_tb(self._vim, 'Duplicated source: %s' % source.name)
error_tb(self._vim, 'path: "%s" "%s"' %
(path, self._loaded_sources[source.name]))
source = None
except Exception:
error_tb(self._vim, 'Could not load source: %s' % path)
finally:
if source:
self._loaded_sources[source.name] = path
self._sources[source.name] = source
self.debug('Loaded Source: %s (%s)', source.name, path)
def _add_filter(self, path):
f = None
try:
Filter = import_plugin(path, 'filter', 'Filter')
if not Filter:
return
f = Filter(self._vim)
name = os.path.splitext(os.path.basename(path))[0]
f.name = getattr(f, 'name', name)
f.path = path
if f.name in self._loaded_filters:
# Duplicated name
error_tb(self._vim, 'duplicated filter: %s' % f.name)
error_tb(self._vim, 'path: "%s" "%s"' %
(path, self._loaded_filters[f.name]))
f = None
except Exception:
# Exception occurred when loading a filter. Log stack trace.
error_tb(self._vim, 'Could not load filter: %s' % path)
finally:
if f:
self._loaded_filters[f.name] = path
self._filters[f.name] = f
self.debug('Loaded Filter: %s (%s)', f.name, path)
def _merge_results(self, context, queue_id):
self.debug('merged_results: begin')
results = self._gather_results(context)
merged_results = []
for result in [x for x in results
if not self._is_skip(x['context'], x['source'])]:
if self._update_result(result, context['input']):
rank = get_custom(self._custom,
result['source'].name, 'rank',
result['source'].rank)
dup = bool(result['source'].filetypes)
candidates = result['candidates']
# Note: cannot use set() for dict
if dup:
# Remove duplicates
candidates = uniq_list_dict(candidates)
merged_results.append({
'complete_position': result['complete_position'],
'mark': result['source'].mark,
'dup': dup,
'candidates': candidates,
'source_name': result['source'].name,
'rank': rank,
})
is_async = len([x for x in results if x['is_async']]) > 0
self.debug('merged_results: end')
return {
'queue_id': queue_id,
'is_async': is_async,
'merged_results': merged_results,
}
def _gather_results(self, context):
results = []
for source in [x[1] for x in self._itersource(context)]:
try:
if source.disabled_syntaxes and 'syntax_names' not in context:
context['syntax_names'] = get_syn_names(self._vim)
ctx = copy.deepcopy(context)
charpos = source.get_complete_position(ctx)
if charpos >= 0 and source.is_bytepos:
charpos = bytepos2charpos(
ctx['encoding'], ctx['input'], charpos)
ctx['char_position'] = charpos
ctx['complete_position'] = charpos2bytepos(
ctx['encoding'], ctx['input'], charpos)
ctx['complete_str'] = ctx['input'][ctx['char_position']:]
if charpos < 0 or self._is_skip(ctx, source):
if source.name in self._prev_results:
self._prev_results.pop(source.name)
# Skip
continue
if (source.name in self._prev_results and
self._use_previous_result(
context, self._prev_results[source.name],
source.is_volatile)):
results.append(self._prev_results[source.name])
continue
ctx['is_async'] = False
ctx['is_refresh'] = True
ctx['max_abbr_width'] = min(source.max_abbr_width,
ctx['max_abbr_width'])
ctx['max_kind_width'] = min(source.max_kind_width,
ctx['max_kind_width'])
ctx['max_menu_width'] = min(source.max_menu_width,
ctx['max_menu_width'])
if ctx['max_abbr_width'] > 0:
ctx['max_abbr_width'] = max(20, ctx['max_abbr_width'])
if ctx['max_kind_width'] > 0:
ctx['max_kind_width'] = max(10, ctx['max_kind_width'])
if ctx['max_menu_width'] > 0:
ctx['max_menu_width'] = max(10, ctx['max_menu_width'])
# Gathering
self._profile_start(ctx, source.name)
ctx['candidates'] = source.gather_candidates(ctx)
self._profile_end(source.name)
if ctx['candidates'] is None:
continue
ctx['candidates'] = convert2candidates(ctx['candidates'])
result = {
'name': source.name,
'source': source,
'context': ctx,
'is_async': ctx['is_async'],
'prev_linenr': ctx['position'][1],
'prev_input': ctx['input'],
'input': ctx['input'],
'complete_position': ctx['complete_position'],
'candidates': ctx['candidates'],
}
self._prev_results[source.name] = result
results.append(result)
except Exception:
self._source_errors[source.name] += 1
if source.is_silent:
continue
if self._source_errors[source.name] > 2:
error(self._vim, 'Too many errors from "%s". '
'This source is disabled until Neovim '
'is restarted.' % source.name)
self._ignore_sources.append(source.name)
continue
error_tb(self._vim, 'Errors from: %s' % source.name)
return results
def _gather_async_results(self, result, source):
try:
context = result['context']
context['is_refresh'] = False
async_candidates = source.gather_candidates(context)
result['is_async'] = context['is_async']
if async_candidates is None:
return
context['candidates'] += convert2candidates(async_candidates)
except Exception:
self._source_errors[source.name] += 1
if source.is_silent:
return
if self._source_errors[source.name] > 2:
error(self._vim, 'Too many errors from "%s". '
'This source is disabled until Neovim '
'is restarted.' % source.name)
self._ignore_sources.append(source.name)
else:
error_tb(self._vim, 'Errors from: %s' % source.name)
def _process_filter(self, f, context):
try:
self._profile_start(context, f.name)
if (isinstance(context['candidates'], dict) and
'sorted_candidates' in context['candidates']):
context_candidates = []
context['is_sorted'] = True
for candidates in context['candidates']['sorted_candidates']:
context['candidates'] = candidates
context_candidates += f.filter(context)
context['candidates'] = context_candidates
else:
context['candidates'] = f.filter(context)
self._profile_end(f.name)
except Exception:
error_tb(self._vim, 'Errors from: %s' % f)
def _update_result(self, result, context_input):
source = result['source']
# Gather async results
if result['is_async']:
self._gather_async_results(result, source)
if not result['candidates']:
return None
# Source context
ctx = copy.deepcopy(result['context'])
ctx['input'] = context_input
ctx['complete_str'] = context_input[ctx['char_position']:]
ctx['is_sorted'] = False
# Set ignorecase
case = ctx['smartcase'] or ctx['camelcase']
if case and re.search(r'[A-Z]', ctx['complete_str']):
ctx['ignorecase'] = 0
ignorecase = ctx['ignorecase']
# Filtering
for f in [self._filters[x] for x
in source.matchers + source.sorters + source.converters
if x in self._filters]:
self._process_filter(f, ctx)
ctx['ignorecase'] = ignorecase
# On post filter
if hasattr(source, 'on_post_filter'):
ctx['candidates'] = source.on_post_filter(ctx)
result['candidates'] = ctx['candidates']
return result if result['candidates'] else None
def _itersource(self, context):
filetypes = context['filetypes']
ignore_sources = set(self._ignore_sources)
for ft in filetypes:
ignore_sources.update(
get_buffer_config(context, ft,
'deoplete_ignore_sources',
'deoplete#ignore_sources',
{}))
for source_name, source in self._sources.items():
if source.filetypes is None or source_name in ignore_sources:
continue
if context['sources'] and source_name not in context['sources']:
continue
if source.filetypes and not any(x in filetypes
for x in source.filetypes):
continue
if not source.is_initialized and hasattr(source, 'on_init'):
self.debug('on_init Source: %s', source.name)
try:
source.on_init(context)
except Exception as exc:
if isinstance(exc, SourceInitError):
error(self._vim,
'Error when loading source {}: {}. '
'Ignoring.'.format(source_name, exc))
else:
error_tb(self._vim,
'Error when loading source {}: {}. '
'Ignoring.'.format(source_name, exc))
self._ignore_sources.append(source_name)
continue
else:
source.is_initialized = True
yield source_name, source
def _profile_start(self, context, name):
if self._profile_flag is 0 or not self.is_debug_enabled:
return
if not self._profile_flag:
self._profile_flag = context['vars']['deoplete#enable_profile']
if self._profile_flag:
return self._profile_start(context, name)
elif self._profile_flag:
self.debug('Profile Start: {0}'.format(name))
self._profile_start_time = time.clock()
def _profile_end(self, name):
if self._profile_start_time:
self.debug('Profile End : {0:<25} time={1:2.10f}'.format(
name, time.clock() - self._profile_start_time))
def _use_previous_result(self, context, result, is_volatile):
if context['position'][1] != result['prev_linenr']:
return False
if is_volatile:
return context['input'] == result['prev_input']
else:
return (re.sub(r'\w*$', '', context['input']) ==
re.sub(r'\w*$', '', result['prev_input']) and
context['input'].find(result['prev_input']) == 0)
def _is_skip(self, context, source):
if 'syntax_names' in context and source.disabled_syntaxes:
p = re.compile('(' + '|'.join(source.disabled_syntaxes) + ')$')
if next(filter(p.search, context['syntax_names']), None):
return True
if (source.input_pattern != '' and
re.search('(' + source.input_pattern + ')$',
context['input'])):
return False
if context['event'] == 'Manual':
return False
return not (source.min_pattern_length <=
len(context['complete_str']) <= source.max_pattern_length)
def _set_source_attributes(self, context):
"""Set source attributes from the context.
Each item in `attrs` is the attribute name. If the default value is in
context['vars'] under a different name, use a tuple.
"""
attrs = (
'filetypes',
'disabled_syntaxes',
'input_pattern',
('min_pattern_length', 'deoplete#auto_complete_start_length'),
'max_pattern_length',
('max_abbr_width', 'deoplete#max_abbr_width'),
('max_kind_width', 'deoplete#max_menu_width'),
('max_menu_width', 'deoplete#max_menu_width'),
'matchers',
'sorters',
'converters',
'mark',
'is_debug_enabled',
'is_silent',
)
for name, source in self._sources.items():
for attr in attrs:
if isinstance(attr, tuple):
default_val = context['vars'][attr[1]]
attr = attr[0]
else:
default_val = None
source_attr = getattr(source, attr, default_val)
setattr(source, attr, get_custom(context['custom'],
name, attr, source_attr))
def _set_custom(self, custom):
self._custom = custom
def _on_event(self, context):
for source_name, source in self._itersource(context):
if source.events is None or context['event'] in source.events:
self.debug('on_event: Source: %s', source_name)
try:
source.on_event(context)
except Exception as exc:
error_tb(self._vim, 'Exception during {}.on_event '
'for event {!r}: {}'.format(
source_name, context['event'], exc))