vscode-json-languageservice
Version:
Language service for JSON
75 lines (74 loc) • 3.6 kB
JavaScript
/*---------------------------------------------------------------------------------------------
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License. See License.txt in the project root for license information.
*--------------------------------------------------------------------------------------------*/
(function (factory) {
if (typeof module === "object" && typeof module.exports === "object") {
var v = factory(require, exports);
if (v !== undefined) module.exports = v;
}
else if (typeof define === "function" && define.amd) {
define(["require", "exports", "../jsonLanguageTypes", "jsonc-parser"], factory);
}
})(function (require, exports) {
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.getSelectionRanges = getSelectionRanges;
const jsonLanguageTypes_1 = require("../jsonLanguageTypes");
const jsonc_parser_1 = require("jsonc-parser");
function getSelectionRanges(document, positions, doc) {
function getSelectionRange(position) {
let offset = document.offsetAt(position);
let node = doc.getNodeFromOffset(offset, true);
const result = [];
while (node) {
switch (node.type) {
case 'string':
case 'object':
case 'array':
// range without ", [ or {
const cStart = node.offset + 1, cEnd = node.offset + node.length - 1;
if (cStart < cEnd && offset >= cStart && offset <= cEnd) {
result.push(newRange(cStart, cEnd));
}
result.push(newRange(node.offset, node.offset + node.length));
break;
case 'number':
case 'boolean':
case 'null':
case 'property':
result.push(newRange(node.offset, node.offset + node.length));
break;
}
if (node.type === 'property' || node.parent && node.parent.type === 'array') {
const afterCommaOffset = getOffsetAfterNextToken(node.offset + node.length, 5 /* SyntaxKind.CommaToken */);
if (afterCommaOffset !== -1) {
result.push(newRange(node.offset, afterCommaOffset));
}
}
node = node.parent;
}
let current = undefined;
for (let index = result.length - 1; index >= 0; index--) {
current = jsonLanguageTypes_1.SelectionRange.create(result[index], current);
}
if (!current) {
current = jsonLanguageTypes_1.SelectionRange.create(jsonLanguageTypes_1.Range.create(position, position));
}
return current;
}
function newRange(start, end) {
return jsonLanguageTypes_1.Range.create(document.positionAt(start), document.positionAt(end));
}
const scanner = (0, jsonc_parser_1.createScanner)(document.getText(), true);
function getOffsetAfterNextToken(offset, expectedToken) {
scanner.setPosition(offset);
let token = scanner.scan();
if (token === expectedToken) {
return scanner.getTokenOffset() + scanner.getTokenLength();
}
return -1;
}
return positions.map(getSelectionRange);
}
});