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