Constnium/node_modules/es-abstract/2022/MakeMatchIndicesIndexPairArray.js
2022-06-23 02:27:43 +02:00

69 lines
2.7 KiB
JavaScript

'use strict';
var GetIntrinsic = require('get-intrinsic');
var $TypeError = GetIntrinsic('%TypeError%');
var ArrayCreate = require('./ArrayCreate');
var CreateDataPropertyOrThrow = require('./CreateDataPropertyOrThrow');
var GetMatchIndexPair = require('./GetMatchIndexPair');
var IsArray = require('./IsArray');
var OrdinaryObjectCreate = require('./OrdinaryObjectCreate');
var ToString = require('./ToString');
var Type = require('./Type');
var every = require('../helpers/every');
var isMatchRecord = require('../helpers/isMatchRecord');
var isStringOrUndefined = function isStringOrUndefined(s) {
return typeof s === 'undefined' || typeof s === 'string';
};
var isMatchRecordOrUndefined = function isMatchRecordOrUndefined(m) {
return typeof m === 'undefined' || isMatchRecord(m);
};
var MAX_ARRAY_LENGTH = Math.pow(2, 32) - 1;
// https://ecma-international.org/ecma-262/13.0/#sec-getmatchindexpair
module.exports = function MakeMatchIndicesIndexPairArray(S, indices, groupNames, hasGroups) {
if (Type(S) !== 'String') {
throw new $TypeError('Assertion failed: `S` must be a String');
}
if (!IsArray(indices) || !every(indices, isMatchRecordOrUndefined)) {
throw new $TypeError('Assertion failed: `indices` must be a List of either Match Records or `undefined`');
}
if (!IsArray(groupNames) || !every(groupNames, isStringOrUndefined)) {
throw new $TypeError('Assertion failed: `groupNames` must be a List of either Strings or `undefined`');
}
if (Type(hasGroups) !== 'Boolean') {
throw new $TypeError('Assertion failed: `hasGroups` must be a Boolean');
}
var n = indices.length; // step 1
if (!(n < MAX_ARRAY_LENGTH)) {
throw new $TypeError('Assertion failed: `indices` length must be less than the max array size, 2**32 - 1');
}
if (groupNames.length !== n - 1) {
throw new $TypeError('Assertion failed: `groupNames` must have exactly one fewer item than `indices`');
}
var A = ArrayCreate(n); // step 5
var groups = hasGroups ? OrdinaryObjectCreate(null) : void undefined; // step 6-7
CreateDataPropertyOrThrow(A, 'groups', groups); // step 8
for (var i = 0; i < n; i += 1) { // step 9
var matchIndices = indices[i]; // step 9.a
// eslint-disable-next-line no-negated-condition
var matchIndexPair = typeof matchIndices !== 'undefined' ? GetMatchIndexPair(S, matchIndices) : void undefined; // step 9.b-9.c
CreateDataPropertyOrThrow(A, ToString(i), matchIndexPair); // step 9.d
if (i > 0 && typeof groupNames[i - 1] !== 'undefined') { // step 9.e
if (!groups) {
throw new $TypeError('if `hasGroups` is `false`, `groupNames` can only contain `undefined` values');
}
CreateDataPropertyOrThrow(groups, groupNames[i - 1], matchIndexPair); // step 9.e.i
}
}
return A; // step 10
};