svelte-language-server
Version:
A language server for Svelte
67 lines • 3.12 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.SelectionRangeProviderImpl = void 0;
const vscode_languageserver_1 = require("vscode-languageserver");
const documents_1 = require("../../../lib/documents");
const utils_1 = require("../utils");
class SelectionRangeProviderImpl {
constructor(lsAndTsDocResolver) {
this.lsAndTsDocResolver = lsAndTsDocResolver;
}
async getSelectionRange(document, position) {
const { tsDoc, lang } = await this.lsAndTsDocResolver.getLsForSyntheticOperations(document);
const tsSelectionRange = lang.getSmartSelectionRange(tsDoc.filePath, tsDoc.offsetAt(tsDoc.getGeneratedPosition(position)));
const selectionRange = this.toSelectionRange(tsDoc, tsSelectionRange);
const mappedRange = this.mapSelectionRangeToParent(tsDoc, document, selectionRange);
return this.filterOutUnmappedRange(mappedRange);
}
toSelectionRange(snapshot, { textSpan, parent }) {
return {
range: (0, utils_1.convertRange)(snapshot, textSpan),
parent: parent && this.toSelectionRange(snapshot, parent)
};
}
mapSelectionRangeToParent(tsDoc, document, selectionRange) {
const { range, parent } = selectionRange;
const originalRange = (0, documents_1.mapRangeToOriginal)(tsDoc, range);
const originalLength = originalRange.end.character - originalRange.start.character;
const generatedLength = range.end.character - range.start.character;
// sourcemap off by one character issue + a generated semicolon
if (originalLength === generatedLength - 2 &&
tsDoc.getFullText()[tsDoc.offsetAt(range.end) - 1] === ';') {
originalRange.end.character += 1;
}
if (!parent) {
return vscode_languageserver_1.SelectionRange.create(originalRange);
}
return vscode_languageserver_1.SelectionRange.create(originalRange, this.mapSelectionRangeToParent(tsDoc, document, parent));
}
filterOutUnmappedRange(selectionRange) {
const flattened = this.flattenAndReverseSelectionRange(selectionRange);
const filtered = flattened.filter((range) => range.start.line > 0 && range.end.line > 0);
if (!filtered.length) {
return null;
}
let result;
for (const selectionRange of filtered) {
result = vscode_languageserver_1.SelectionRange.create(selectionRange, result);
}
return result ?? null;
}
/**
* flatten the selection range and its parent to an array in reverse order
* so it's easier to filter out unmapped selection and create a new tree of
* selection range
*/
flattenAndReverseSelectionRange(selectionRange) {
const result = [];
let current = selectionRange;
while (current.parent) {
result.unshift(current.range);
current = current.parent;
}
return result;
}
}
exports.SelectionRangeProviderImpl = SelectionRangeProviderImpl;
//# sourceMappingURL=SelectionRangeProvider.js.map