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Fix end position bug #9

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Fix end position bug #9

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10 changes: 8 additions & 2 deletions td/learning/constrained_decoding.py
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Original file line number Diff line number Diff line change
Expand Up @@ -137,13 +137,19 @@ def feed_token(self, token: int, probs=None):
self._current_start = self._token_positions_to_real[
self._tokenizer.token_to_position(token)
]
self._current_end = self._edit_spans[self._current_start]
self._decode_state = DecoderState.States.TOKEN
position_rule = self._position_rule(self._current_start)
self._interactive_parser = self._grammar._lark_parser_for_start[
position_rule
].parse_interactive(start=position_rule)
self._recompute_mask()

# Find the correct end position based on the selected rule
for node in self._position_to_nodes[self._current_start]:
if self._node_rule(node) == position_rule:
self._current_end = node.meta.end_pos
break
else:
self._current_end = self._edit_spans[self._current_start]
elif self._decode_state == DecoderState.States.TOKEN:
token_str = self._tokenizer._index_to_token[token]
token_name = self._grammar.rev_vocabulary_map[token_str]
Expand Down