Search target slice interface unification #3

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mikael-lovqvist · 2026-05-24T14:05:39Z

mikael-lovqvist commented

2026-05-24 14:05:39 +00:00

When searching through strings or sequences alike we want to be able to specify the search slice. Currently some of our interfaces only specified start position.

From what I can gather here we don't get much help with lastIndex with the RegExp() object. This means that we would have to pre-slice in order to support this for regexp, and if we do that, we will also have to either post match correct or have a match object that includes this and have helper properties to compute the absolute positions of the target string.

TODO

Gather sites that need to be uplifted to the new protocol
Test function
Document

When searching through strings or sequences alike we want to be able to specify the search slice. Currently some of our interfaces only specified start position. From what I can gather [here](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp/lastIndex) we don't get much help with `lastIndex` with the [`RegExp()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp) object. This means that we would have to pre-slice in order to support this for regexp, and if we do that, we will also have to either post match correct or have a match object that includes this and have helper properties to compute the absolute positions of the target string. **TODO** - [x] Gather sites that need to be uplifted to the new protocol - [ ] Test function - [ ] Document

mikael-lovqvist commented

2026-05-24 23:13:25 +00:00

The only site relating to RegExp that mentions start_index is

https://gitea.efforting.tech/efforting.tech/nodejs.esm-library/src/branch/main/source/parsing/generic-parsing.mjs

Then it is mentioned by

https://gitea.efforting.tech/efforting.tech/nodejs.esm-library/src/branch/main/experiments/reduction-scanner-1.mjs

Experiments are a bit in flux though and should probably be cleaned up and promoted to examples or just removed if no longer applicable.

The only site relating to RegExp that mentions start_index is https://gitea.efforting.tech/efforting.tech/nodejs.esm-library/src/branch/main/source/parsing/generic-parsing.mjs Then it is mentioned by https://gitea.efforting.tech/efforting.tech/nodejs.esm-library/src/branch/main/experiments/reduction-scanner-1.mjs Experiments are a bit in flux though and should probably be cleaned up and promoted to examples or just removed if no longer applicable.

mikael-lovqvist referenced this issue from a commit

2026-05-25 00:30:02 +00:00

Worked on #3 where I believe the regexp part is now complete but it needs testing

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Reference: efforting.tech/nodejs.esm-library#3