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* Add better debug message for illegal move

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Matthew Honnibal 2015-11-07 05:34:37 +11:00
parent 2733816b7b
commit 19136b0e7d
1 changed files with 5 additions and 2 deletions
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7
spacy/syntax/parser.pyx
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@ -105,9 +105,12 @@ cdef class Parser:
self.moves.set_valid(eg.is_valid, stcls)
self.model.set_prediction(&eg)
assert eg.is_valid[eg.guess]
action = self.moves.c[eg.guess]
if not eg.is_valid[eg.guess]:
raise ValueError(
"Illegal action: %s" % self.moves.move_name(action.move, action.label)
)
action.do(stcls, action.label)
self.moves.finalize_state(stcls)
tokens.set_parse(stcls._sent)