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first cut of token_at_position api, https://github.com/microsoft/vscode/issues/91555

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This commit is contained in:
Johannes Rieken
2020-05-19 16:22:55 +02:00
parent a267564138
commit 7ab052aec4
7 changed files with 91 additions and 1 deletions
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18
src/vs/workbench/api/browser/mainThreadLanguages.ts
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@@ -8,6 +8,9 @@ import { IModeService } from 'vs/editor/common/services/modeService';
import { IModelService } from 'vs/editor/common/services/modelService';
import { MainThreadLanguagesShape, MainContext, IExtHostContext } from '../common/extHost.protocol';
import { extHostNamedCustomer } from 'vs/workbench/api/common/extHostCustomers';
import { IPosition } from 'vs/editor/common/core/position';
import { IRange, Range } from 'vs/editor/common/core/range';
import { StandardTokenType } from 'vs/editor/common/modes';
@extHostNamedCustomer(MainContext.MainThreadLanguages)
export class MainThreadLanguages implements MainThreadLanguagesShape {
@@ -40,4 +43,19 @@ export class MainThreadLanguages implements MainThreadLanguagesShape {
this._modelService.setMode(model, this._modeService.create(languageId));
return Promise.resolve(undefined);
}
async $tokensAtPosition(resource: UriComponents, position: IPosition): Promise<undefined | { type: StandardTokenType, range: IRange }> {
const uri = URI.revive(resource);
const model = this._modelService.getModel(uri);
if (!model) {
return undefined;
}
model.tokenizeIfCheap(position.lineNumber);
const tokens = model.getLineTokens(position.lineNumber);
const idx = tokens.findTokenIndexAtOffset(position.column - 1);
return {
type: tokens.getStandardTokenType(idx),
range: new Range(position.lineNumber, 1 + tokens.getStartOffset(idx), position.lineNumber, 1 + tokens.getEndOffset(idx))
};
}
}