Rintaro Ishizaki 94f0c14675 [SyntaxParse] Return dedicated pointer from HiddenLibSyntaxAction ...

SyntaxParseActions::recordToken() et al. may return the same pointer
value for different nodes (e.g. `nullptr`). So we cannot use DenseMap to
associate the node from the explicit syntax parsing actions to libSyntax
node. Instead, use a structure that wraps them.

2019-07-31 16:14:32 -07:00

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