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44 lines
1.5 KiB
Python
44 lines
1.5 KiB
Python
11 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 providers."""
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from collections import defaultdict
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from UltiSnips.providers._snippet_dictionary import SnippetDictionary
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class SnippetProvider(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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def get_snippets(self, filetypes, before, possible):
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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."""
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found_snippets = []
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for ft in filetypes:
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found_snippets += self._find_snippets(ft, before, possible)
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return found_snippets
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def _find_snippets(self, ft, trigger, potentially=False, seen=None):
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"""Find snippets matching 'trigger' for 'ft'. If 'potentially' is True,
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partial matches are enough."""
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snips = self._snippets.get(ft, None)
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if not snips:
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return []
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if not seen:
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seen = set()
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seen.add(ft)
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parent_results = []
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# TODO(sirver): extends information is not bound to one
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# provider. It should be tracked further up.
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for parent_ft in snips.extends:
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if parent_ft not in seen:
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seen.add(parent_ft)
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parent_results += self._find_snippets(parent_ft, trigger,
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potentially, seen)
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return parent_results + snips.get_matching_snippets(
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trigger, potentially)
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