cf57c4e38d
* Simplify CacheMap, removing support for array path keys * Update keys * Update JsonSchemaValidator * Update AudioSystem
758 lines
25 KiB
JavaScript
758 lines
25 KiB
JavaScript
/*
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* Copyright (C) 2019-2021 Yomichan Authors
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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/* global
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* CacheMap
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*/
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class JsonSchemaProxyHandler {
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constructor(schema, jsonSchemaValidator) {
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this._schema = schema;
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this._jsonSchemaValidator = jsonSchemaValidator;
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}
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getPrototypeOf(target) {
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return Object.getPrototypeOf(target);
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}
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setPrototypeOf() {
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throw new Error('setPrototypeOf not supported');
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}
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isExtensible(target) {
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return Object.isExtensible(target);
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}
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preventExtensions(target) {
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Object.preventExtensions(target);
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return true;
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}
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getOwnPropertyDescriptor(target, property) {
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return Object.getOwnPropertyDescriptor(target, property);
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}
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defineProperty() {
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throw new Error('defineProperty not supported');
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}
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has(target, property) {
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return property in target;
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}
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get(target, property) {
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if (typeof property === 'symbol') {
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return target[property];
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}
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if (Array.isArray(target)) {
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if (typeof property === 'string' && /^\d+$/.test(property)) {
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property = parseInt(property, 10);
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} else if (typeof property === 'string') {
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return target[property];
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}
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}
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const propertySchema = this._jsonSchemaValidator.getPropertySchema(this._schema, property, target);
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if (propertySchema === null) {
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return;
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}
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const value = target[property];
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return value !== null && typeof value === 'object' ? this._jsonSchemaValidator.createProxy(value, propertySchema) : value;
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}
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set(target, property, value) {
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if (Array.isArray(target)) {
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if (typeof property === 'string' && /^\d+$/.test(property)) {
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property = parseInt(property, 10);
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if (property > target.length) {
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throw new Error('Array index out of range');
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}
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} else if (typeof property === 'string') {
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target[property] = value;
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return true;
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}
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}
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const propertySchema = this._jsonSchemaValidator.getPropertySchema(this._schema, property, target);
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if (propertySchema === null) {
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throw new Error(`Property ${property} not supported`);
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}
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value = clone(value);
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this._jsonSchemaValidator.validate(value, propertySchema);
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target[property] = value;
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return true;
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}
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deleteProperty(target, property) {
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const required = this._schema.required;
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if (Array.isArray(required) && required.includes(property)) {
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throw new Error(`${property} cannot be deleted`);
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}
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return Reflect.deleteProperty(target, property);
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}
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ownKeys(target) {
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return Reflect.ownKeys(target);
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}
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apply() {
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throw new Error('apply not supported');
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}
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construct() {
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throw new Error('construct not supported');
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}
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}
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class JsonSchemaValidator {
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constructor() {
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this._regexCache = new CacheMap(100);
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}
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createProxy(target, schema) {
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return new Proxy(target, new JsonSchemaProxyHandler(schema, this));
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}
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isValid(value, schema) {
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try {
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this.validate(value, schema);
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return true;
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} catch (e) {
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return false;
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}
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}
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validate(value, schema) {
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const info = new JsonSchemaTraversalInfo(value, schema);
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this._validate(value, schema, info);
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}
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getValidValueOrDefault(schema, value) {
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const info = new JsonSchemaTraversalInfo(value, schema);
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return this._getValidValueOrDefault(schema, value, info);
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}
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getPropertySchema(schema, property, value) {
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return this._getPropertySchema(schema, property, value, null);
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}
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clearCache() {
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this._regexCache.clear();
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}
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// Private
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_getPropertySchema(schema, property, value, path) {
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const type = this._getSchemaOrValueType(schema, value);
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switch (type) {
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case 'object':
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{
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const properties = schema.properties;
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if (this._isObject(properties)) {
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const propertySchema = properties[property];
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if (this._isObject(propertySchema)) {
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if (path !== null) { path.push(['properties', properties], [property, propertySchema]); }
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return propertySchema;
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}
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}
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const additionalProperties = schema.additionalProperties;
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if (additionalProperties === false) {
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return null;
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} else if (this._isObject(additionalProperties)) {
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if (path !== null) { path.push(['additionalProperties', additionalProperties]); }
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return additionalProperties;
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} else {
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const result = JsonSchemaValidator.unconstrainedSchema;
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if (path !== null) { path.push([null, result]); }
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return result;
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}
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}
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case 'array':
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{
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const items = schema.items;
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if (this._isObject(items)) {
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return items;
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}
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if (Array.isArray(items)) {
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if (property >= 0 && property < items.length) {
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const propertySchema = items[property];
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if (this._isObject(propertySchema)) {
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if (path !== null) { path.push(['items', items], [property, propertySchema]); }
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return propertySchema;
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}
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}
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}
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const additionalItems = schema.additionalItems;
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if (additionalItems === false) {
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return null;
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} else if (this._isObject(additionalItems)) {
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if (path !== null) { path.push(['additionalItems', additionalItems]); }
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return additionalItems;
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} else {
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const result = JsonSchemaValidator.unconstrainedSchema;
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if (path !== null) { path.push([null, result]); }
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return result;
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}
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}
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default:
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return null;
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}
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}
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_getSchemaOrValueType(schema, value) {
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const type = schema.type;
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if (Array.isArray(type)) {
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if (typeof value !== 'undefined') {
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const valueType = this._getValueType(value);
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if (type.indexOf(valueType) >= 0) {
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return valueType;
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}
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}
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return null;
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}
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if (typeof type === 'undefined') {
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if (typeof value !== 'undefined') {
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return this._getValueType(value);
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}
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return null;
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}
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return type;
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}
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_validate(value, schema, info) {
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this._validateSingleSchema(value, schema, info);
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this._validateConditional(value, schema, info);
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this._validateAllOf(value, schema, info);
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this._validateAnyOf(value, schema, info);
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this._validateOneOf(value, schema, info);
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this._validateNoneOf(value, schema, info);
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}
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_validateConditional(value, schema, info) {
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const ifSchema = schema.if;
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if (!this._isObject(ifSchema)) { return; }
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let okay = true;
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info.schemaPush('if', ifSchema);
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try {
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this._validate(value, ifSchema, info);
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} catch (e) {
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okay = false;
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}
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info.schemaPop();
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const nextSchema = okay ? schema.then : schema.else;
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if (this._isObject(nextSchema)) {
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info.schemaPush(okay ? 'then' : 'else', nextSchema);
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this._validate(value, nextSchema, info);
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info.schemaPop();
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}
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}
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_validateAllOf(value, schema, info) {
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const subSchemas = schema.allOf;
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if (!Array.isArray(subSchemas)) { return; }
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info.schemaPush('allOf', subSchemas);
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for (let i = 0; i < subSchemas.length; ++i) {
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const subSchema = subSchemas[i];
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info.schemaPush(i, subSchema);
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this._validate(value, subSchema, info);
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info.schemaPop();
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}
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info.schemaPop();
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}
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_validateAnyOf(value, schema, info) {
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const subSchemas = schema.anyOf;
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if (!Array.isArray(subSchemas)) { return; }
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info.schemaPush('anyOf', subSchemas);
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for (let i = 0; i < subSchemas.length; ++i) {
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const subSchema = subSchemas[i];
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info.schemaPush(i, subSchema);
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try {
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this._validate(value, subSchema, info);
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return;
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} catch (e) {
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// NOP
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}
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info.schemaPop();
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}
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throw new JsonSchemaValidationError('0 anyOf schemas matched', value, schema, info);
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// info.schemaPop(); // Unreachable
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}
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_validateOneOf(value, schema, info) {
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const subSchemas = schema.oneOf;
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if (!Array.isArray(subSchemas)) { return; }
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info.schemaPush('oneOf', subSchemas);
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let count = 0;
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for (let i = 0; i < subSchemas.length; ++i) {
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const subSchema = subSchemas[i];
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info.schemaPush(i, subSchema);
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try {
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this._validate(value, subSchema, info);
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++count;
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} catch (e) {
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// NOP
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}
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info.schemaPop();
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}
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if (count !== 1) {
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throw new JsonSchemaValidationError(`${count} oneOf schemas matched`, value, schema, info);
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}
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info.schemaPop();
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}
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_validateNoneOf(value, schema, info) {
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const subSchemas = schema.not;
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if (!Array.isArray(subSchemas)) { return; }
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info.schemaPush('not', subSchemas);
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for (let i = 0; i < subSchemas.length; ++i) {
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const subSchema = subSchemas[i];
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info.schemaPush(i, subSchema);
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try {
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this._validate(value, subSchema, info);
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} catch (e) {
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info.schemaPop();
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continue;
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}
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throw new JsonSchemaValidationError(`not[${i}] schema matched`, value, schema, info);
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}
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info.schemaPop();
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}
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_validateSingleSchema(value, schema, info) {
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const type = this._getValueType(value);
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const schemaType = schema.type;
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if (!this._isValueTypeAny(value, type, schemaType)) {
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throw new JsonSchemaValidationError(`Value type ${type} does not match schema type ${schemaType}`, value, schema, info);
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}
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const schemaConst = schema.const;
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if (typeof schemaConst !== 'undefined' && !this._valuesAreEqual(value, schemaConst)) {
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throw new JsonSchemaValidationError('Invalid constant value', value, schema, info);
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}
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const schemaEnum = schema.enum;
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if (Array.isArray(schemaEnum) && !this._valuesAreEqualAny(value, schemaEnum)) {
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throw new JsonSchemaValidationError('Invalid enum value', value, schema, info);
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}
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switch (type) {
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case 'number':
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this._validateNumber(value, schema, info);
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break;
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case 'string':
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this._validateString(value, schema, info);
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break;
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case 'array':
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this._validateArray(value, schema, info);
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break;
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case 'object':
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this._validateObject(value, schema, info);
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break;
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}
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}
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_validateNumber(value, schema, info) {
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const multipleOf = schema.multipleOf;
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if (typeof multipleOf === 'number' && Math.floor(value / multipleOf) * multipleOf !== value) {
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throw new JsonSchemaValidationError(`Number is not a multiple of ${multipleOf}`, value, schema, info);
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}
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const minimum = schema.minimum;
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if (typeof minimum === 'number' && value < minimum) {
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throw new JsonSchemaValidationError(`Number is less than ${minimum}`, value, schema, info);
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}
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const exclusiveMinimum = schema.exclusiveMinimum;
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if (typeof exclusiveMinimum === 'number' && value <= exclusiveMinimum) {
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throw new JsonSchemaValidationError(`Number is less than or equal to ${exclusiveMinimum}`, value, schema, info);
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}
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const maximum = schema.maximum;
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if (typeof maximum === 'number' && value > maximum) {
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throw new JsonSchemaValidationError(`Number is greater than ${maximum}`, value, schema, info);
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}
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const exclusiveMaximum = schema.exclusiveMaximum;
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if (typeof exclusiveMaximum === 'number' && value >= exclusiveMaximum) {
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throw new JsonSchemaValidationError(`Number is greater than or equal to ${exclusiveMaximum}`, value, schema, info);
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}
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}
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_validateString(value, schema, info) {
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const minLength = schema.minLength;
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if (typeof minLength === 'number' && value.length < minLength) {
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throw new JsonSchemaValidationError('String length too short', value, schema, info);
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}
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const maxLength = schema.maxLength;
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if (typeof maxLength === 'number' && value.length > maxLength) {
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throw new JsonSchemaValidationError('String length too long', value, schema, info);
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}
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const pattern = schema.pattern;
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if (typeof pattern === 'string') {
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let patternFlags = schema.patternFlags;
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if (typeof patternFlags !== 'string') { patternFlags = ''; }
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let regex;
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try {
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regex = this._getRegex(pattern, patternFlags);
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} catch (e) {
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throw new JsonSchemaValidationError(`Pattern is invalid (${e.message})`, value, schema, info);
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}
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if (!regex.test(value)) {
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throw new JsonSchemaValidationError('Pattern match failed', value, schema, info);
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}
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}
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}
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_validateArray(value, schema, info) {
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const minItems = schema.minItems;
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if (typeof minItems === 'number' && value.length < minItems) {
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throw new JsonSchemaValidationError('Array length too short', value, schema, info);
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}
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const maxItems = schema.maxItems;
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if (typeof maxItems === 'number' && value.length > maxItems) {
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throw new JsonSchemaValidationError('Array length too long', value, schema, info);
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}
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this._validateArrayContains(value, schema, info);
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for (let i = 0, ii = value.length; i < ii; ++i) {
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const schemaPath = [];
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const propertySchema = this._getPropertySchema(schema, i, value, schemaPath);
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if (propertySchema === null) {
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throw new JsonSchemaValidationError(`No schema found for array[${i}]`, value, schema, info);
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}
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const propertyValue = value[i];
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for (const [p, s] of schemaPath) { info.schemaPush(p, s); }
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info.valuePush(i, propertyValue);
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this._validate(propertyValue, propertySchema, info);
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info.valuePop();
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for (let j = 0, jj = schemaPath.length; j < jj; ++j) { info.schemaPop(); }
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}
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}
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_validateArrayContains(value, schema, info) {
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const containsSchema = schema.contains;
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if (!this._isObject(containsSchema)) { return; }
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info.schemaPush('contains', containsSchema);
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for (let i = 0, ii = value.length; i < ii; ++i) {
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const propertyValue = value[i];
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info.valuePush(i, propertyValue);
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try {
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this._validate(propertyValue, containsSchema, info);
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info.schemaPop();
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return;
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} catch (e) {
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// NOP
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}
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info.valuePop();
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}
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throw new JsonSchemaValidationError('contains schema didn\'t match', value, schema, info);
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}
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_validateObject(value, schema, info) {
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const properties = new Set(Object.getOwnPropertyNames(value));
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const required = schema.required;
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if (Array.isArray(required)) {
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for (const property of required) {
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if (!properties.has(property)) {
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throw new JsonSchemaValidationError(`Missing property ${property}`, value, schema, info);
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}
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}
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}
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const minProperties = schema.minProperties;
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if (typeof minProperties === 'number' && properties.length < minProperties) {
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throw new JsonSchemaValidationError('Not enough object properties', value, schema, info);
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}
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const maxProperties = schema.maxProperties;
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if (typeof maxProperties === 'number' && properties.length > maxProperties) {
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throw new JsonSchemaValidationError('Too many object properties', value, schema, info);
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}
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for (const property of properties) {
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const schemaPath = [];
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const propertySchema = this._getPropertySchema(schema, property, value, schemaPath);
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if (propertySchema === null) {
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throw new JsonSchemaValidationError(`No schema found for ${property}`, value, schema, info);
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}
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const propertyValue = value[property];
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for (const [p, s] of schemaPath) { info.schemaPush(p, s); }
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info.valuePush(property, propertyValue);
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this._validate(propertyValue, propertySchema, info);
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info.valuePop();
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for (let i = 0; i < schemaPath.length; ++i) { info.schemaPop(); }
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}
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}
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_isValueTypeAny(value, type, schemaTypes) {
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if (typeof schemaTypes === 'string') {
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return this._isValueType(value, type, schemaTypes);
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} else if (Array.isArray(schemaTypes)) {
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for (const schemaType of schemaTypes) {
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if (this._isValueType(value, type, schemaType)) {
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return true;
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}
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}
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return false;
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}
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return true;
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}
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_isValueType(value, type, schemaType) {
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return (
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type === schemaType ||
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(schemaType === 'integer' && Math.floor(value) === value)
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);
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}
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_getValueType(value) {
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const type = typeof value;
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if (type === 'object') {
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if (value === null) { return 'null'; }
|
|
if (Array.isArray(value)) { return 'array'; }
|
|
}
|
|
return type;
|
|
}
|
|
|
|
_valuesAreEqualAny(value1, valueList) {
|
|
for (const value2 of valueList) {
|
|
if (this._valuesAreEqual(value1, value2)) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
_valuesAreEqual(value1, value2) {
|
|
return value1 === value2;
|
|
}
|
|
|
|
_getDefaultTypeValue(type) {
|
|
if (typeof type === 'string') {
|
|
switch (type) {
|
|
case 'null':
|
|
return null;
|
|
case 'boolean':
|
|
return false;
|
|
case 'number':
|
|
case 'integer':
|
|
return 0;
|
|
case 'string':
|
|
return '';
|
|
case 'array':
|
|
return [];
|
|
case 'object':
|
|
return {};
|
|
}
|
|
}
|
|
return null;
|
|
}
|
|
|
|
_getDefaultSchemaValue(schema) {
|
|
const schemaType = schema.type;
|
|
const schemaDefault = schema.default;
|
|
return (
|
|
typeof schemaDefault !== 'undefined' &&
|
|
this._isValueTypeAny(schemaDefault, this._getValueType(schemaDefault), schemaType) ?
|
|
clone(schemaDefault) :
|
|
this._getDefaultTypeValue(schemaType)
|
|
);
|
|
}
|
|
|
|
_getValidValueOrDefault(schema, value, info) {
|
|
let type = this._getValueType(value);
|
|
if (typeof value === 'undefined' || !this._isValueTypeAny(value, type, schema.type)) {
|
|
value = this._getDefaultSchemaValue(schema);
|
|
type = this._getValueType(value);
|
|
}
|
|
|
|
switch (type) {
|
|
case 'object':
|
|
value = this._populateObjectDefaults(value, schema, info);
|
|
break;
|
|
case 'array':
|
|
value = this._populateArrayDefaults(value, schema, info);
|
|
break;
|
|
default:
|
|
if (!this.isValid(value, schema)) {
|
|
const schemaDefault = this._getDefaultSchemaValue(schema);
|
|
if (this.isValid(schemaDefault, schema)) {
|
|
value = schemaDefault;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
|
|
return value;
|
|
}
|
|
|
|
_populateObjectDefaults(value, schema, info) {
|
|
const properties = new Set(Object.getOwnPropertyNames(value));
|
|
|
|
const required = schema.required;
|
|
if (Array.isArray(required)) {
|
|
for (const property of required) {
|
|
properties.delete(property);
|
|
|
|
const propertySchema = this._getPropertySchema(schema, property, value, null);
|
|
if (propertySchema === null) { continue; }
|
|
info.valuePush(property, value);
|
|
info.schemaPush(property, propertySchema);
|
|
const hasValue = Object.prototype.hasOwnProperty.call(value, property);
|
|
value[property] = this._getValidValueOrDefault(propertySchema, hasValue ? value[property] : void 0, info);
|
|
info.schemaPop();
|
|
info.valuePop();
|
|
}
|
|
}
|
|
|
|
for (const property of properties) {
|
|
const propertySchema = this._getPropertySchema(schema, property, value, null);
|
|
if (propertySchema === null) {
|
|
Reflect.deleteProperty(value, property);
|
|
} else {
|
|
info.valuePush(property, value);
|
|
info.schemaPush(property, propertySchema);
|
|
value[property] = this._getValidValueOrDefault(propertySchema, value[property], info);
|
|
info.schemaPop();
|
|
info.valuePop();
|
|
}
|
|
}
|
|
|
|
return value;
|
|
}
|
|
|
|
_populateArrayDefaults(value, schema, info) {
|
|
for (let i = 0, ii = value.length; i < ii; ++i) {
|
|
const propertySchema = this._getPropertySchema(schema, i, value, null);
|
|
if (propertySchema === null) { continue; }
|
|
info.valuePush(i, value);
|
|
info.schemaPush(i, propertySchema);
|
|
value[i] = this._getValidValueOrDefault(propertySchema, value[i], info);
|
|
info.schemaPop();
|
|
info.valuePop();
|
|
}
|
|
|
|
const minItems = schema.minItems;
|
|
if (typeof minItems === 'number' && value.length < minItems) {
|
|
for (let i = value.length; i < minItems; ++i) {
|
|
const propertySchema = this._getPropertySchema(schema, i, value, null);
|
|
if (propertySchema === null) { break; }
|
|
info.valuePush(i, value);
|
|
info.schemaPush(i, propertySchema);
|
|
const item = this._getValidValueOrDefault(propertySchema, void 0, info);
|
|
info.schemaPop();
|
|
info.valuePop();
|
|
value.push(item);
|
|
}
|
|
}
|
|
|
|
const maxItems = schema.maxItems;
|
|
if (typeof maxItems === 'number' && value.length > maxItems) {
|
|
value.splice(maxItems, value.length - maxItems);
|
|
}
|
|
|
|
return value;
|
|
}
|
|
|
|
_isObject(value) {
|
|
return typeof value === 'object' && value !== null && !Array.isArray(value);
|
|
}
|
|
|
|
_getRegex(pattern, flags) {
|
|
const key = `${flags}:${pattern}`;
|
|
let regex = this._regexCache.get(key);
|
|
if (typeof regex === 'undefined') {
|
|
regex = new RegExp(pattern, flags);
|
|
this._regexCache.set(key, regex);
|
|
}
|
|
return regex;
|
|
}
|
|
}
|
|
|
|
Object.defineProperty(JsonSchemaValidator, 'unconstrainedSchema', {
|
|
value: Object.freeze({}),
|
|
configurable: false,
|
|
enumerable: true,
|
|
writable: false
|
|
});
|
|
|
|
class JsonSchemaTraversalInfo {
|
|
constructor(value, schema) {
|
|
this.valuePath = [];
|
|
this.schemaPath = [];
|
|
this.valuePush(null, value);
|
|
this.schemaPush(null, schema);
|
|
}
|
|
|
|
valuePush(path, value) {
|
|
this.valuePath.push([path, value]);
|
|
}
|
|
|
|
valuePop() {
|
|
this.valuePath.pop();
|
|
}
|
|
|
|
schemaPush(path, schema) {
|
|
this.schemaPath.push([path, schema]);
|
|
}
|
|
|
|
schemaPop() {
|
|
this.schemaPath.pop();
|
|
}
|
|
}
|
|
|
|
class JsonSchemaValidationError extends Error {
|
|
constructor(message, value, schema, info) {
|
|
super(message);
|
|
this.value = value;
|
|
this.schema = schema;
|
|
this.info = info;
|
|
}
|
|
}
|