Add go-to-symbol and open-symbol-by-name features #8
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lydell
commented
Jul 21, 2023
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| You can navigate symbols inside a file. This is helpful for quickly navigating among functions, values and types in a file. | ||
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TODO: Create this gif
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TODO: Update the performance tables further below
(should probably be done on the same computer as the other features?)
lydell
commented
Jul 22, 2023
lydell
changed the title
lydell
commented
Jul 22, 2023
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| You can navigate to any top-level declaration in any file, which is a quick way of getting to the right file. | ||
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Conflicts: src/features/jump-to-definition.ts
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Status: This seems to work well for me. I just need Ryan’s help with the docs stuff (we talked about it IRL a while ago).
This implements Go to Symbol and the Outline view (they go together), as well as Open symbol by name (which is a bit hacky, but I think it provides a lot of value even if it’s not 100 % pedantically correct). That’s what VSCode calls those features (see the links), but personally I think it’s not super clear what is what. Open to name changes if you want!
At first, on a large file it was too slow (when typing, the UI locked up and the characters appeared too late). It turned out 99.9 % of the time was spent parsing. I solved this by parsing in a Worker Thread. So now it never blocks the main thread. For small files, the outline feels instant (like 15 ms), and for big files I notice a ~0.5 second delay for it sometimes.
Note that the worker stuff is a bit tricky, so some extra testing might be good – this affects all features that parses using elm-syntax.