[PATCH] D67536: [WIP] [clangd] Add support for an inactive regions notification

[Sam McCall via Phabricator via cfe-commits]

sammccall added a comment.

In D67536#1697533 <https://reviews.llvm.org/D67536#1697533>, @nridge wrote:

> How would one even measure the line length? `SourceManager` doesn't sem to have a method like `getLineLength()` or similar.


If you look at functions like `offsetToPosition` in SourceCode.h, basically you get the buffer as a string (contains utf-8), find the offset you're interested in, and then zoom around looking for `\n`. Once you have a substring, calling `lspLength()` on it will give you the length in UTF-16 or whatever LSP is speaking at the moment.


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https://reviews.llvm.org/D67536