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96 lines
3.3 KiB
Python
96 lines
3.3 KiB
Python
8 years ago
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#!/usr/bin/env python
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# encoding: utf-8
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"""Base class for snippet sources."""
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from collections import defaultdict
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from UltiSnips.snippet.source._snippet_dictionary import SnippetDictionary
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class SnippetSource(object):
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"""See module docstring."""
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def __init__(self):
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self._snippets = defaultdict(SnippetDictionary)
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self._extends = defaultdict(set)
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def ensure(self, filetypes, cached):
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"""Update/reload the snippets in the source when needed.
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It makes sure that the snippets are not outdated.
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"""
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def loaded(self, filetypes):
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return len(self._snippets) > 0
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def _get_existing_deep_extends(self, base_filetypes):
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"""Helper for get all existing filetypes extended by base filetypes."""
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deep_extends = self.get_deep_extends(base_filetypes)
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return [ft for ft in deep_extends if ft in self._snippets]
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def get_snippets(self, filetypes, before, possible, autotrigger_only):
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"""Returns the snippets for all 'filetypes' (in order) and their
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parents matching the text 'before'. If 'possible' is true, a partial
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match is enough. Base classes can override this method to provide means
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of creating snippets on the fly.
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Returns a list of SnippetDefinition s.
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"""
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result = []
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for ft in self._get_existing_deep_extends(filetypes):
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snips = self._snippets[ft]
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result.extend(snips.get_matching_snippets(before, possible,
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autotrigger_only))
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return result
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def get_clear_priority(self, filetypes):
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"""Get maximum clearsnippets priority without arguments for specified
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filetypes, if any.
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It returns None if there are no clearsnippets.
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"""
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pri = None
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for ft in self._get_existing_deep_extends(filetypes):
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snippets = self._snippets[ft]
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if pri is None or snippets._clear_priority > pri:
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pri = snippets._clear_priority
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return pri
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def get_cleared(self, filetypes):
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"""Get a set of cleared snippets marked by clearsnippets with arguments
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for specified filetypes."""
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cleared = {}
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for ft in self._get_existing_deep_extends(filetypes):
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snippets = self._snippets[ft]
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for key, value in snippets._cleared.items():
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if key not in cleared or value > cleared[key]:
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cleared[key] = value
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return cleared
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def update_extends(self, child_ft, parent_fts):
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"""Update the extending relation by given child filetype and its parent
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filetypes."""
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self._extends[child_ft].update(parent_fts)
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def get_deep_extends(self, base_filetypes):
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"""Get a list of filetypes that is either directed or indirected
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extended by given base filetypes.
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Note that the returned list include the root filetype itself.
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"""
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seen = set(base_filetypes)
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todo_fts = list(set(base_filetypes))
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while todo_fts:
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todo_ft = todo_fts.pop()
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unseen_extends = set(
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ft for ft in self._extends[todo_ft] if ft not in seen)
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seen.update(unseen_extends)
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todo_fts.extend(unseen_extends)
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return seen
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