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@@ -368,8 +368,9 @@ class TokenTreeToPattern(Transformer): |
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def expansions(self, exps): |
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if len(exps) == 1: |
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return exps[0] |
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assert all(not i.flags for i in exps) |
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return PatternRE('(?:%s)' % ('|'.join(i.to_regexp() for i in exps))) |
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if len({i.flags for i in exps}) > 1: |
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raise GrammarError("Lark doesn't support joining tokens with conflicting flags!") |
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return PatternRE('(?:%s)' % ('|'.join(i.to_regexp() for i in exps)), exps[0].flags) |
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def expr(self, args): |
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inner, op = args |
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