Reuse existing source position if it matches #5838
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enebo
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Aug 19, 2019
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enebo
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I am not fully sure this will be correct in presence of heredocs or other things which read past a token then in grammar asks for tokline (line of last token).
With that said ruby-2_6 branch has completely removed SimpleSourcePosition so I could entertain trying to move that back to 9.2.x. I did more than just that but the gist of that change was all Nodes are ISourcePosition implementors (but only RootNode contains the actual file).
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@enebo Ahh yes, I remember the change you made for 2.6. This patch was a substantial reduction but eliminating them altogether is obviously better. We can wait for your change or backport it but I'll close this one. |
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This seems simple enough but causes some off-by-one issues for reasons I have not managed to figure out.
If this change can work, it reduces SimpleSourcePosition allocation during
-e 1from 46240 (1110264 bytes) to 13984 instances (335616 bytes).