tree 1d0989d1997ff4aede0d2bffae1a115b7be5dd52
parent de4997415f6aefdcf26b1298fcbf1cd81c10d990
author Johan Vikstrom <jvikstrom@google.com> 1566819371 +0000
committer Johan Vikstrom <jvikstrom@google.com> 1566819371 +0000

[clangd] Added a colorizer to the vscode extension.

Summary:
Adds the main colorizer component. It colorizes every time clangd sends a publishSemanticHighlighting notification.
Every time it colorizes it does a full recolorization (removes all decorations from the editor and applies new ones). The reason for this is that all ranges for the same scope share a TextEditorDecorationType. This is due to TextEditorDecorationTypes being very expensive to create. The prototype used one DecorationType per range but that ran into very big performance problems (it took >100 ms to apply 600 lines of highlightings which froze the editor).

This version does not share the problem of being extremly slow, but there is probably potential to optimize it even more.

No document/texteditor lifecycle management code in this CL, that will come in the next one.

Reviewers: hokein, ilya-biryukov

Subscribers: MaskRay, jkorous, arphaman, kadircet, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D66219

git-svn-id: https://llvm.org/svn/llvm-project/clang-tools-extra/trunk@369893 91177308-0d34-0410-b5e6-96231b3b80d8