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hover.ts
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hover.ts
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import * as vscode from 'vscode-languageserver-protocol';
import type { LanguageServiceRuntimeContext } from '../types';
import * as shared from '@volar/shared';
import { languageFeatureWorker } from '../utils/featureWorkers';
export function register(context: LanguageServiceRuntimeContext) {
return (uri: string, position: vscode.Position) => {
return languageFeatureWorker(
context,
uri,
position,
function* (position, sourceMap) {
for (const [mappedRange] of sourceMap.getMappedRanges(
position,
position,
data => !!data.capabilities.basic,
)) {
yield mappedRange.start;
}
},
(plugin, document, position) => plugin.doHover?.(document, position),
(data, sourceMap) => {
if (!sourceMap)
return data;
if (!data.range)
return data;
const range = sourceMap.getSourceRange(data.range.start, data.range.end)?.[0];
if (range) {
data.range = range;
return data;
}
},
hovers => ({
contents: hovers.map(getHoverTexts).flat(),
range: hovers.find(hover => hover.range && shared.isInsideRange(hover.range, { start: position, end: position }))?.range ?? hovers[0].range,
}),
);
}
}
function getHoverTexts(hover?: vscode.Hover) {
if (!hover) {
return [];
}
if (typeof hover.contents === 'string') {
return [hover.contents];
}
if (vscode.MarkupContent.is(hover.contents)) {
return [hover.contents.value];
}
if (Array.isArray(hover.contents)) {
return hover.contents;
}
return [hover.contents.value];
}