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2061: Theme loading and "editor.tokenColorCustomizations" support. r=matklad a=seivan Fixes: [Issue#1294](https://github.com/rust-analyzer/rust-analyzer/issues/1294#issuecomment-497450325) TODO: - [x] Load themes - [x] Load existing `ralsp`-prefixed overrides from `"workbench.colorCustomizations"`. - [x] Load overrides from `"editor.tokenColorCustomizations.textMateRules"`. - [x] Use RA tags to load `vscode.DecorationRenderOptions` (colors) from theme & overrides. - [x] Map RA tags to common TextMate scopes before loading colors. - [x] Add default scope mappings in extension. - [x] Cache mappings between settings updates. - [x] Add scope mapping configuration manifest in `package.json` - [x] Load configurable scope mappings from settings. - [x] Load JSON Scheme for text mate scope rules in settings. - [x] Update [Readme](https://github.com/seivan/rust-analyzer/blob/feature/themes/docs/user/README.md#settings). Borrowed the theme loading (`scopes.ts`) from `Tree Sitter` with some modifications to reading `"editor.tokenColorCustomizations"` for merging with loaded themes and had to remove the async portions to be able to load it from settings updates. ~Just a PoC and an idea I toyed around with a lot of room for improvement.~ For starters, certain keywords aren't part of the standard TextMate grammar, so it still reads colors from the `ralsp` prefixed values in `"workbench.colorCustomizations"`. But I think there's more value making the extension work with existing themes by maping some of the decoration tags to existing key or keys. <img width="453" alt="Screenshot 2019-11-09 at 17 43 18" src="https://user-images.githubusercontent.com/55424/68531968-71b4e380-0318-11ea-924e-cdbb8d5eae06.png"> <img width="780" alt="Screenshot 2019-11-09 at 17 41 45" src="https://user-images.githubusercontent.com/55424/68531950-4b8f4380-0318-11ea-8f85-24a84efaf23b.png"> <img width="468" alt="Screenshot 2019-11-09 at 17 40 29" src="https://user-images.githubusercontent.com/55424/68531952-51852480-0318-11ea-800a-6ae9215f5368.png"> These will merge with the default ones coming with the extension, so you don't have to implement all of them and works well with overrides defined in settings. ```jsonc "editor.tokenColorCustomizations": { "textMateRules": [ { "scope": "keyword", "settings": { "fontStyle": "bold", } }, ] }, ``` Edit: The idea is to work with 90% of the themes out there by working within existing scopes available that are generally styled. It's not to say I want to erase the custom Rust scopes - those should still remain and eventually worked into a custom grammar bundle for Rust specific themes that target those, I just want to make it work with generic themes offered on the market place for now. A custom grammar bundle and themes for Rust specific scopes is out of... scope for this PR. We'll make another round to tackle those issues. Current fallbacks implemented ```typescript [ 'comment', [ 'comment', 'comment.block', 'comment.line', 'comment.block.documentation' ] ], ['string', ['string']], ['keyword', ['keyword']], ['keyword.control', ['keyword.control', 'keyword', 'keyword.other']], [ 'keyword.unsafe', ['storage.modifier', 'keyword.other', 'keyword.control', 'keyword'] ], ['function', ['entity.name.function']], ['parameter', ['variable.parameter']], ['constant', ['constant', 'variable']], ['type', ['entity.name.type']], ['builtin', ['variable.language', 'support.type', 'support.type']], ['text', ['string', 'string.quoted', 'string.regexp']], ['attribute', ['keyword']], ['literal', ['string', 'string.quoted', 'string.regexp']], ['macro', ['support.other']], ['variable', ['variable']], ['variable.mut', ['variable', 'storage.modifier']], [ 'field', [ 'variable.object.property', 'meta.field.declaration', 'meta.definition.property', 'variable.other' ] ], ['module', ['entity.name.section', 'entity.other']] ``` Co-authored-by: Seivan Heidari <seivan.heidari@icloud.com> |
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