122 lines
3.0 KiB
Java
122 lines
3.0 KiB
Java
/* jshint proto: true */
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import * as Constants from './constants';
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import CloneHelper from 'clone';
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export function getLocation(index, inputStream) {
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let n = index + 1;
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let line = null;
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let column = -1;
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while (--n >= 0 && inputStream.charAt(n) !== '\n') {
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column++;
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}
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if (typeof index === 'number') {
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line = (inputStream.slice(0, index).match(/\n/g) || '').length;
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}
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return {
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line,
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column
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};
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}
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export function copyArray(arr) {
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let i;
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const length = arr.length;
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const copy = new Array(length);
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for (i = 0; i < length; i++) {
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copy[i] = arr[i];
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}
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return copy;
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}
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export function clone(obj) {
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const cloned = {};
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for (const prop in obj) {
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if (obj.hasOwnProperty(prop)) {
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cloned[prop] = obj[prop];
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}
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}
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return cloned;
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}
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export function defaults(obj1, obj2) {
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let newObj = obj2 || {};
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if (!obj2._defaults) {
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newObj = {};
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const defaults = CloneHelper(obj1);
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newObj._defaults = defaults;
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const cloned = obj2 ? CloneHelper(obj2) : {};
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Object.assign(newObj, defaults, cloned);
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}
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return newObj;
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}
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export function copyOptions(obj1, obj2) {
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if (obj2 && obj2._defaults) {
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return obj2;
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}
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const opts = defaults(obj1, obj2);
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if (opts.strictMath) {
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opts.math = Constants.Math.STRICT_LEGACY;
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}
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// Back compat with changed relativeUrls option
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if (opts.relativeUrls) {
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opts.rewriteUrls = Constants.RewriteUrls.ALL;
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}
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if (typeof opts.math === 'string') {
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switch (opts.math.toLowerCase()) {
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case 'always':
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opts.math = Constants.Math.ALWAYS;
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break;
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case 'parens-division':
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opts.math = Constants.Math.PARENS_DIVISION;
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break;
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case 'strict':
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case 'parens':
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opts.math = Constants.Math.PARENS;
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break;
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case 'strict-legacy':
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opts.math = Constants.Math.STRICT_LEGACY;
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}
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}
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if (typeof opts.rewriteUrls === 'string') {
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switch (opts.rewriteUrls.toLowerCase()) {
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case 'off':
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opts.rewriteUrls = Constants.RewriteUrls.OFF;
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break;
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case 'local':
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opts.rewriteUrls = Constants.RewriteUrls.LOCAL;
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break;
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case 'all':
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opts.rewriteUrls = Constants.RewriteUrls.ALL;
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break;
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}
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}
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return opts;
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}
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export function merge(obj1, obj2) {
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for (const prop in obj2) {
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if (obj2.hasOwnProperty(prop)) {
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obj1[prop] = obj2[prop];
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}
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}
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return obj1;
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}
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export function flattenArray(arr, result = []) {
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for (let i = 0, length = arr.length; i < length; i++) {
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const value = arr[i];
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if (Array.isArray(value)) {
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flattenArray(value, result);
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} else {
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if (value !== undefined) {
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result.push(value);
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}
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}
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}
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return result;
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} |