travel/admin/node_modules/JSV/lib/jsv.js

1497 lines
44 KiB
JavaScript

/**
* JSV: JSON Schema Validator
*
* @fileOverview A JavaScript implementation of a extendable, fully compliant JSON Schema validator.
* @author <a href="mailto:gary.court@gmail.com">Gary Court</a>
* @version 4.0.2
* @see http://github.com/garycourt/JSV
*/
/*
* Copyright 2010 Gary Court. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are
* permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice, this list
* of conditions and the following disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY GARY COURT ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GARY COURT OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation are those of the
* authors and should not be interpreted as representing official policies, either expressed
* or implied, of Gary Court or the JSON Schema specification.
*/
/*jslint white: true, sub: true, onevar: true, undef: true, eqeqeq: true, newcap: true, immed: true, indent: 4 */
var exports = exports || this,
require = require || function () {
return exports;
};
(function () {
var URI = require("./uri/uri").URI,
O = {},
I2H = "0123456789abcdef".split(""),
mapArray, filterArray, searchArray,
JSV;
//
// Utility functions
//
function typeOf(o) {
return o === undefined ? "undefined" : (o === null ? "null" : Object.prototype.toString.call(o).split(" ").pop().split("]").shift().toLowerCase());
}
/** @inner */
function F() {}
function createObject(proto) {
F.prototype = proto || {};
return new F();
}
function mapObject(obj, func, scope) {
var newObj = {}, key;
for (key in obj) {
if (obj[key] !== O[key]) {
newObj[key] = func.call(scope, obj[key], key, obj);
}
}
return newObj;
}
/** @ignore */
mapArray = function (arr, func, scope) {
var x = 0, xl = arr.length, newArr = new Array(xl);
for (; x < xl; ++x) {
newArr[x] = func.call(scope, arr[x], x, arr);
}
return newArr;
};
if (Array.prototype.map) {
/** @ignore */
mapArray = function (arr, func, scope) {
return Array.prototype.map.call(arr, func, scope);
};
}
/** @ignore */
filterArray = function (arr, func, scope) {
var x = 0, xl = arr.length, newArr = [];
for (; x < xl; ++x) {
if (func.call(scope, arr[x], x, arr)) {
newArr[newArr.length] = arr[x];
}
}
return newArr;
};
if (Array.prototype.filter) {
/** @ignore */
filterArray = function (arr, func, scope) {
return Array.prototype.filter.call(arr, func, scope);
};
}
/** @ignore */
searchArray = function (arr, o) {
var x = 0, xl = arr.length;
for (; x < xl; ++x) {
if (arr[x] === o) {
return x;
}
}
return -1;
};
if (Array.prototype.indexOf) {
/** @ignore */
searchArray = function (arr, o) {
return Array.prototype.indexOf.call(arr, o);
};
}
function toArray(o) {
return o !== undefined && o !== null ? (o instanceof Array && !o.callee ? o : (typeof o.length !== "number" || o.split || o.setInterval || o.call ? [ o ] : Array.prototype.slice.call(o))) : [];
}
function keys(o) {
var result = [], key;
switch (typeOf(o)) {
case "object":
for (key in o) {
if (o[key] !== O[key]) {
result[result.length] = key;
}
}
break;
case "array":
for (key = o.length - 1; key >= 0; --key) {
result[key] = key;
}
break;
}
return result;
}
function pushUnique(arr, o) {
if (searchArray(arr, o) === -1) {
arr.push(o);
}
return arr;
}
function popFirst(arr, o) {
var index = searchArray(arr, o);
if (index > -1) {
arr.splice(index, 1);
}
return arr;
}
function randomUUID() {
return [
I2H[Math.floor(Math.random() * 0x10)],
I2H[Math.floor(Math.random() * 0x10)],
I2H[Math.floor(Math.random() * 0x10)],
I2H[Math.floor(Math.random() * 0x10)],
I2H[Math.floor(Math.random() * 0x10)],
I2H[Math.floor(Math.random() * 0x10)],
I2H[Math.floor(Math.random() * 0x10)],
I2H[Math.floor(Math.random() * 0x10)],
"-",
I2H[Math.floor(Math.random() * 0x10)],
I2H[Math.floor(Math.random() * 0x10)],
I2H[Math.floor(Math.random() * 0x10)],
I2H[Math.floor(Math.random() * 0x10)],
"-4", //set 4 high bits of time_high field to version
I2H[Math.floor(Math.random() * 0x10)],
I2H[Math.floor(Math.random() * 0x10)],
I2H[Math.floor(Math.random() * 0x10)],
"-",
I2H[(Math.floor(Math.random() * 0x10) & 0x3) | 0x8], //specify 2 high bits of clock sequence
I2H[Math.floor(Math.random() * 0x10)],
I2H[Math.floor(Math.random() * 0x10)],
I2H[Math.floor(Math.random() * 0x10)],
"-",
I2H[Math.floor(Math.random() * 0x10)],
I2H[Math.floor(Math.random() * 0x10)],
I2H[Math.floor(Math.random() * 0x10)],
I2H[Math.floor(Math.random() * 0x10)],
I2H[Math.floor(Math.random() * 0x10)],
I2H[Math.floor(Math.random() * 0x10)],
I2H[Math.floor(Math.random() * 0x10)],
I2H[Math.floor(Math.random() * 0x10)],
I2H[Math.floor(Math.random() * 0x10)],
I2H[Math.floor(Math.random() * 0x10)],
I2H[Math.floor(Math.random() * 0x10)],
I2H[Math.floor(Math.random() * 0x10)]
].join("");
}
function escapeURIComponent(str) {
return encodeURIComponent(str).replace(/!/g, '%21').replace(/'/g, '%27').replace(/\(/g, '%28').replace(/\)/g, '%29').replace(/\*/g, '%2A');
}
function formatURI(uri) {
if (typeof uri === "string" && uri.indexOf("#") === -1) {
uri += "#";
}
return uri;
}
function stripInstances(o) {
if (o instanceof JSONInstance) {
return o.getURI();
}
switch (typeOf(o)) {
case "undefined":
case "null":
case "boolean":
case "number":
case "string":
return o; //do nothing
case "object":
return mapObject(o, stripInstances);
case "array":
return mapArray(o, stripInstances);
default:
return o.toString();
}
}
/**
* The exception that is thrown when a schema fails to be created.
*
* @name InitializationError
* @class
* @param {JSONInstance|String} instance The instance (or instance URI) that is invalid
* @param {JSONSchema|String} schema The schema (or schema URI) that was validating the instance
* @param {String} attr The attribute that failed to validated
* @param {String} message A user-friendly message on why the schema attribute failed to validate the instance
* @param {Any} details The value of the schema attribute
*/
function InitializationError(instance, schema, attr, message, details) {
Error.call(this, message);
this.uri = instance instanceof JSONInstance ? instance.getURI() : instance;
this.schemaUri = schema instanceof JSONInstance ? schema.getURI() : schema;
this.attribute = attr;
this.message = message;
this.description = message; //IE
this.details = details;
}
InitializationError.prototype = new Error();
InitializationError.prototype.constructor = InitializationError;
InitializationError.prototype.name = "InitializationError";
/**
* Defines an error, found by a schema, with an instance.
* This class can only be instantiated by {@link Report#addError}.
*
* @name ValidationError
* @class
* @see Report#addError
*/
/**
* The URI of the instance that has the error.
*
* @name ValidationError.prototype.uri
* @type String
*/
/**
* The URI of the schema that generated the error.
*
* @name ValidationError.prototype.schemaUri
* @type String
*/
/**
* The name of the schema attribute that generated the error.
*
* @name ValidationError.prototype.attribute
* @type String
*/
/**
* An user-friendly (English) message about what failed to validate.
*
* @name ValidationError.prototype.message
* @type String
*/
/**
* The value of the schema attribute that generated the error.
*
* @name ValidationError.prototype.details
* @type Any
*/
/**
* Reports are returned from validation methods to describe the result of a validation.
*
* @name Report
* @class
* @see JSONSchema#validate
* @see Environment#validate
*/
function Report() {
/**
* An array of {@link ValidationError} objects that define all the errors generated by the schema against the instance.
*
* @name Report.prototype.errors
* @type Array
* @see Report#addError
*/
this.errors = [];
/**
* A hash table of every instance and what schemas were validated against it.
* <p>
* The key of each item in the table is the URI of the instance that was validated.
* The value of this key is an array of strings of URIs of the schema that validated it.
* </p>
*
* @name Report.prototype.validated
* @type Object
* @see Report#registerValidation
* @see Report#isValidatedBy
*/
this.validated = {};
/**
* If the report is generated by {@link Environment#validate}, this field is the generated instance.
*
* @name Report.prototype.instance
* @type JSONInstance
* @see Environment#validate
*/
/**
* If the report is generated by {@link Environment#validate}, this field is the generated schema.
*
* @name Report.prototype.schema
* @type JSONSchema
* @see Environment#validate
*/
/**
* If the report is generated by {@link Environment#validate}, this field is the schema's schema.
* This value is the same as calling <code>schema.getSchema()</code>.
*
* @name Report.prototype.schemaSchema
* @type JSONSchema
* @see Environment#validate
* @see JSONSchema#getSchema
*/
}
/**
* Adds a {@link ValidationError} object to the <a href="#errors"><code>errors</code></a> field.
*
* @param {JSONInstance|String} instance The instance (or instance URI) that is invalid
* @param {JSONSchema|String} schema The schema (or schema URI) that was validating the instance
* @param {String} attr The attribute that failed to validated
* @param {String} message A user-friendly message on why the schema attribute failed to validate the instance
* @param {Any} details The value of the schema attribute
*/
Report.prototype.addError = function (instance, schema, attr, message, details) {
this.errors.push({
uri : instance instanceof JSONInstance ? instance.getURI() : instance,
schemaUri : schema instanceof JSONInstance ? schema.getURI() : schema,
attribute : attr,
message : message,
details : stripInstances(details)
});
};
/**
* Registers that the provided instance URI has been validated by the provided schema URI.
* This is recorded in the <a href="#validated"><code>validated</code></a> field.
*
* @param {String} uri The URI of the instance that was validated
* @param {String} schemaUri The URI of the schema that validated the instance
*/
Report.prototype.registerValidation = function (uri, schemaUri) {
if (!this.validated[uri]) {
this.validated[uri] = [ schemaUri ];
} else {
this.validated[uri].push(schemaUri);
}
};
/**
* Returns if an instance with the provided URI has been validated by the schema with the provided URI.
*
* @param {String} uri The URI of the instance
* @param {String} schemaUri The URI of a schema
* @returns {Boolean} If the instance has been validated by the schema.
*/
Report.prototype.isValidatedBy = function (uri, schemaUri) {
return !!this.validated[uri] && searchArray(this.validated[uri], schemaUri) !== -1;
};
/**
* A wrapper class for binding an Environment, URI and helper methods to an instance.
* This class is most commonly instantiated with {@link Environment#createInstance}.
*
* @name JSONInstance
* @class
* @param {Environment} env The environment this instance belongs to
* @param {JSONInstance|Any} json The value of the instance
* @param {String} [uri] The URI of the instance. If undefined, the URI will be a randomly generated UUID.
* @param {String} [fd] The fragment delimiter for properties. If undefined, uses the environment default.
*/
function JSONInstance(env, json, uri, fd) {
if (json instanceof JSONInstance) {
if (typeof fd !== "string") {
fd = json._fd;
}
if (typeof uri !== "string") {
uri = json._uri;
}
json = json._value;
}
if (typeof uri !== "string") {
uri = "urn:uuid:" + randomUUID() + "#";
} else if (uri.indexOf(":") === -1) {
uri = formatURI(URI.resolve("urn:uuid:" + randomUUID() + "#", uri));
}
this._env = env;
this._value = json;
this._uri = uri;
this._fd = fd || this._env._options["defaultFragmentDelimiter"];
}
/**
* Returns the environment the instance is bound to.
*
* @returns {Environment} The environment of the instance
*/
JSONInstance.prototype.getEnvironment = function () {
return this._env;
};
/**
* Returns the name of the type of the instance.
*
* @returns {String} The name of the type of the instance
*/
JSONInstance.prototype.getType = function () {
return typeOf(this._value);
};
/**
* Returns the JSON value of the instance.
*
* @returns {Any} The actual JavaScript value of the instance
*/
JSONInstance.prototype.getValue = function () {
return this._value;
};
/**
* Returns the URI of the instance.
*
* @returns {String} The URI of the instance
*/
JSONInstance.prototype.getURI = function () {
return this._uri;
};
/**
* Returns a resolved URI of a provided relative URI against the URI of the instance.
*
* @param {String} uri The relative URI to resolve
* @returns {String} The resolved URI
*/
JSONInstance.prototype.resolveURI = function (uri) {
return formatURI(URI.resolve(this._uri, uri));
};
/**
* Returns an array of the names of all the properties.
*
* @returns {Array} An array of strings which are the names of all the properties
*/
JSONInstance.prototype.getPropertyNames = function () {
return keys(this._value);
};
/**
* Returns a {@link JSONInstance} of the value of the provided property name.
*
* @param {String} key The name of the property to fetch
* @returns {JSONInstance} The instance of the property value
*/
JSONInstance.prototype.getProperty = function (key) {
var value = this._value ? this._value[key] : undefined;
if (value instanceof JSONInstance) {
return value;
}
//else
return new JSONInstance(this._env, value, this._uri + this._fd + escapeURIComponent(key), this._fd);
};
/**
* Returns all the property instances of the target instance.
* <p>
* If the target instance is an Object, then the method will return a hash table of {@link JSONInstance}s of all the properties.
* If the target instance is an Array, then the method will return an array of {@link JSONInstance}s of all the items.
* </p>
*
* @returns {Object|Array|undefined} The list of instances for all the properties
*/
JSONInstance.prototype.getProperties = function () {
var type = typeOf(this._value),
self = this;
if (type === "object") {
return mapObject(this._value, function (value, key) {
if (value instanceof JSONInstance) {
return value;
}
return new JSONInstance(self._env, value, self._uri + self._fd + escapeURIComponent(key), self._fd);
});
} else if (type === "array") {
return mapArray(this._value, function (value, key) {
if (value instanceof JSONInstance) {
return value;
}
return new JSONInstance(self._env, value, self._uri + self._fd + escapeURIComponent(key), self._fd);
});
}
};
/**
* Returns the JSON value of the provided property name.
* This method is a faster version of calling <code>instance.getProperty(key).getValue()</code>.
*
* @param {String} key The name of the property
* @returns {Any} The JavaScript value of the instance
* @see JSONInstance#getProperty
* @see JSONInstance#getValue
*/
JSONInstance.prototype.getValueOfProperty = function (key) {
if (this._value) {
if (this._value[key] instanceof JSONInstance) {
return this._value[key]._value;
}
return this._value[key];
}
};
/**
* Return if the provided value is the same as the value of the instance.
*
* @param {JSONInstance|Any} instance The value to compare
* @returns {Boolean} If both the instance and the value match
*/
JSONInstance.prototype.equals = function (instance) {
if (instance instanceof JSONInstance) {
return this._value === instance._value;
}
//else
return this._value === instance;
};
/**
* Warning: Not a generic clone function
* Produces a JSV acceptable clone
*/
function clone(obj, deep) {
var newObj, x;
if (obj instanceof JSONInstance) {
obj = obj.getValue();
}
switch (typeOf(obj)) {
case "object":
if (deep) {
newObj = {};
for (x in obj) {
if (obj[x] !== O[x]) {
newObj[x] = clone(obj[x], deep);
}
}
return newObj;
} else {
return createObject(obj);
}
break;
case "array":
if (deep) {
newObj = new Array(obj.length);
x = obj.length;
while (--x >= 0) {
newObj[x] = clone(obj[x], deep);
}
return newObj;
} else {
return Array.prototype.slice.call(obj);
}
break;
default:
return obj;
}
}
/**
* This class binds a {@link JSONInstance} with a {@link JSONSchema} to provided context aware methods.
*
* @name JSONSchema
* @class
* @param {Environment} env The environment this schema belongs to
* @param {JSONInstance|Any} json The value of the schema
* @param {String} [uri] The URI of the schema. If undefined, the URI will be a randomly generated UUID.
* @param {JSONSchema|Boolean} [schema] The schema to bind to the instance. If <code>undefined</code>, the environment's default schema will be used. If <code>true</code>, the instance's schema will be itself.
* @extends JSONInstance
*/
function JSONSchema(env, json, uri, schema) {
var fr;
JSONInstance.call(this, env, json, uri);
if (schema === true) {
this._schema = this;
} else if (json instanceof JSONSchema && !(schema instanceof JSONSchema)) {
this._schema = json._schema; //TODO: Make sure cross environments don't mess everything up
} else {
this._schema = schema instanceof JSONSchema ? schema : this._env.getDefaultSchema() || this._env.createEmptySchema();
}
//determine fragment delimiter from schema
fr = this._schema.getValueOfProperty("fragmentResolution");
if (fr === "dot-delimited") {
this._fd = ".";
} else if (fr === "slash-delimited") {
this._fd = "/";
}
return this.rebuild(); //this works even when called with "new"
}
JSONSchema.prototype = createObject(JSONInstance.prototype);
/**
* Returns the schema of the schema.
*
* @returns {JSONSchema} The schema of the schema
*/
JSONSchema.prototype.getSchema = function () {
var uri = this._refs && this._refs["describedby"],
newSchema;
if (uri) {
newSchema = uri && this._env.findSchema(uri);
if (newSchema) {
if (!newSchema.equals(this._schema)) {
this._schema = newSchema;
this.rebuild(); //if the schema has changed, the context has changed - so everything must be rebuilt
}
} else if (this._env._options["enforceReferences"]) {
throw new InitializationError(this, this._schema, "{describedby}", "Unknown schema reference", uri);
}
}
return this._schema;
};
/**
* Returns the value of the provided attribute name.
* <p>
* This method is different from {@link JSONInstance#getProperty} as the named property
* is converted using a parser defined by the schema's schema before being returned. This
* makes the return value of this method attribute dependent.
* </p>
*
* @param {String} key The name of the attribute
* @param {Any} [arg] Some attribute parsers accept special arguments for returning resolved values. This is attribute dependent.
* @returns {JSONSchema|Any} The value of the attribute
*/
JSONSchema.prototype.getAttribute = function (key, arg) {
var schemaProperty, parser, property, result,
schema = this.getSchema(); //we do this here to make sure the "describedby" reference has not changed, and that the attribute cache is up-to-date
if (!arg && this._attributes && this._attributes.hasOwnProperty(key)) {
return this._attributes[key];
}
schemaProperty = schema.getProperty("properties").getProperty(key);
parser = schemaProperty.getValueOfProperty("parser");
property = this.getProperty(key);
if (typeof parser === "function") {
result = parser(property, schemaProperty, arg);
if (!arg && this._attributes) {
this._attributes[key] = result;
}
return result;
}
//else
return property.getValue();
};
/**
* Returns all the attributes of the schema.
*
* @returns {Object} A map of all parsed attribute values
*/
JSONSchema.prototype.getAttributes = function () {
var properties, schemaProperties, key, schemaProperty, parser,
schema = this.getSchema(); //we do this here to make sure the "describedby" reference has not changed, and that the attribute cache is up-to-date
if (!this._attributes && this.getType() === "object") {
properties = this.getProperties();
schemaProperties = schema.getProperty("properties");
this._attributes = {};
for (key in properties) {
if (properties[key] !== O[key]) {
schemaProperty = schemaProperties && schemaProperties.getProperty(key);
parser = schemaProperty && schemaProperty.getValueOfProperty("parser");
if (typeof parser === "function") {
this._attributes[key] = parser(properties[key], schemaProperty);
} else {
this._attributes[key] = properties[key].getValue();
}
}
}
}
return clone(this._attributes, false);
};
/**
* Convenience method for retrieving a link or link object from a schema.
* This method is the same as calling <code>schema.getAttribute("links", [rel, instance])[0];</code>.
*
* @param {String} rel The link relationship
* @param {JSONInstance} [instance] The instance to resolve any URIs from
* @returns {String|Object|undefined} If <code>instance</code> is provided, a string containing the resolve URI of the link is returned.
* If <code>instance</code> is not provided, a link object is returned with details of the link.
* If no link with the provided relationship exists, <code>undefined</code> is returned.
* @see JSONSchema#getAttribute
*/
JSONSchema.prototype.getLink = function (rel, instance) {
var schemaLinks = this.getAttribute("links", [rel, instance]);
if (schemaLinks && schemaLinks.length && schemaLinks[schemaLinks.length - 1]) {
return schemaLinks[schemaLinks.length - 1];
}
};
/**
* Validates the provided instance against the target schema and returns a {@link Report}.
*
* @param {JSONInstance|Any} instance The instance to validate; may be a {@link JSONInstance} or any JavaScript value
* @param {Report} [report] A {@link Report} to concatenate the result of the validation to. If <code>undefined</code>, a new {@link Report} is created.
* @param {JSONInstance} [parent] The parent/containing instance of the provided instance
* @param {JSONSchema} [parentSchema] The schema of the parent/containing instance
* @param {String} [name] The name of the parent object's property that references the instance
* @returns {Report} The result of the validation
*/
JSONSchema.prototype.validate = function (instance, report, parent, parentSchema, name) {
var schemaSchema = this.getSchema(),
validator = schemaSchema.getValueOfProperty("validator");
if (!(instance instanceof JSONInstance)) {
instance = this.getEnvironment().createInstance(instance);
}
if (!(report instanceof Report)) {
report = new Report();
}
if (this._env._options["validateReferences"] && this._refs) {
if (this._refs["describedby"] && !this._env.findSchema(this._refs["describedby"])) {
report.addError(this, this._schema, "{describedby}", "Unknown schema reference", this._refs["describedby"]);
}
if (this._refs["full"] && !this._env.findSchema(this._refs["full"])) {
report.addError(this, this._schema, "{full}", "Unknown schema reference", this._refs["full"]);
}
}
if (typeof validator === "function" && !report.isValidatedBy(instance.getURI(), this.getURI())) {
report.registerValidation(instance.getURI(), this.getURI());
validator(instance, this, schemaSchema, report, parent, parentSchema, name);
}
return report;
};
/** @inner */
function createFullLookupWrapper(func) {
return /** @inner */ function fullLookupWrapper() {
var scope = this,
stack = [],
uri = scope._refs && scope._refs["full"],
schema;
while (uri) {
schema = scope._env.findSchema(uri);
if (schema) {
if (schema._value === scope._value) {
break;
}
scope = schema;
stack.push(uri);
uri = scope._refs && scope._refs["full"];
if (stack.indexOf(uri) > -1) {
break; //stop infinite loop
}
} else if (scope._env._options["enforceReferences"]) {
throw new InitializationError(scope, scope._schema, "{full}", "Unknown schema reference", uri);
} else {
uri = null;
}
}
return func.apply(scope, arguments);
};
}
/**
* Wraps all JSONInstance methods with a function that resolves the "full" reference.
*
* @inner
*/
(function () {
var key;
for (key in JSONSchema.prototype) {
if (JSONSchema.prototype[key] !== O[key] && typeOf(JSONSchema.prototype[key]) === "function") {
JSONSchema.prototype[key] = createFullLookupWrapper(JSONSchema.prototype[key]);
}
}
}());
/**
* Reinitializes/re-registers/rebuilds the schema.
* <br/>
* This is used internally, and should only be called when a schema's private variables are modified directly.
*
* @private
* @return {JSONSchema} The newly rebuilt schema
*/
JSONSchema.prototype.rebuild = function () {
var instance = this,
initializer = instance.getSchema().getValueOfProperty("initializer");
//clear previous built values
instance._refs = null;
instance._attributes = null;
if (typeof initializer === "function") {
instance = initializer(instance);
}
//register schema
instance._env._schemas[instance._uri] = instance;
//build & cache the rest of the schema
instance.getAttributes();
return instance;
};
/**
* Set the provided reference to the given value.
* <br/>
* References are used for establishing soft-links to other {@link JSONSchema}s.
* Currently, the following references are natively supported:
* <dl>
* <dt><code>full</code></dt>
* <dd>The value is the URI to the full instance of this instance.</dd>
* <dt><code>describedby</code></dt>
* <dd>The value is the URI to the schema of this instance.</dd>
* </dl>
*
* @param {String} name The name of the reference
* @param {String} uri The URI of the schema to refer to
*/
JSONSchema.prototype.setReference = function (name, uri) {
if (!this._refs) {
this._refs = {};
}
this._refs[name] = this.resolveURI(uri);
};
/**
* Returns the value of the provided reference name.
*
* @param {String} name The name of the reference
* @return {String} The value of the provided reference name
*/
JSONSchema.prototype.getReference = function (name) {
return this._refs && this._refs[name];
};
/**
* Merges two schemas/instances together.
*/
function inherits(base, extra, extension) {
var baseType = typeOf(base),
extraType = typeOf(extra),
child, x;
if (extraType === "undefined") {
return clone(base, true);
} else if (baseType === "undefined" || extraType !== baseType) {
return clone(extra, true);
} else if (extraType === "object") {
if (base instanceof JSONSchema) {
base = base.getAttributes();
}
if (extra instanceof JSONSchema) {
extra = extra.getAttributes();
if (extra["extends"] && extension && extra["extends"] instanceof JSONSchema) {
extra["extends"] = [ extra["extends"] ];
}
}
child = clone(base, true); //this could be optimized as some properties get overwritten
for (x in extra) {
if (extra[x] !== O[x]) {
child[x] = inherits(base[x], extra[x], extension);
}
}
return child;
} else {
return clone(extra, true);
}
}
/**
* An Environment is a sandbox of schemas thats behavior is different from other environments.
*
* @name Environment
* @class
*/
function Environment() {
this._id = randomUUID();
this._schemas = {};
this._options = {};
this.createSchema({}, true, "urn:jsv:empty-schema#");
}
/**
* Returns a clone of the target environment.
*
* @returns {Environment} A new {@link Environment} that is a exact copy of the target environment
*/
Environment.prototype.clone = function () {
var env = new Environment();
env._schemas = createObject(this._schemas);
env._options = createObject(this._options);
return env;
};
/**
* Returns a new {@link JSONInstance} of the provided data.
*
* @param {JSONInstance|Any} data The value of the instance
* @param {String} [uri] The URI of the instance. If undefined, the URI will be a randomly generated UUID.
* @returns {JSONInstance} A new {@link JSONInstance} from the provided data
*/
Environment.prototype.createInstance = function (data, uri) {
uri = formatURI(uri);
if (data instanceof JSONInstance && (!uri || data.getURI() === uri)) {
return data;
}
return new JSONInstance(this, data, uri);
};
/**
* Creates a new {@link JSONSchema} from the provided data, and registers it with the environment.
*
* @param {JSONInstance|Any} data The value of the schema
* @param {JSONSchema|Boolean} [schema] The schema to bind to the instance. If <code>undefined</code>, the environment's default schema will be used. If <code>true</code>, the instance's schema will be itself.
* @param {String} [uri] The URI of the schema. If undefined, the URI will be a randomly generated UUID.
* @returns {JSONSchema} A new {@link JSONSchema} from the provided data
* @throws {InitializationError} If a schema that is not registered with the environment is referenced
*/
Environment.prototype.createSchema = function (data, schema, uri) {
uri = formatURI(uri);
if (data instanceof JSONSchema && (!uri || data._uri === uri) && (!schema || data.getSchema().equals(schema))) {
return data;
}
return new JSONSchema(this, data, uri, schema);
};
/**
* Creates an empty schema.
*
* @returns {JSONSchema} The empty schema, who's schema is itself.
*/
Environment.prototype.createEmptySchema = function () {
return this._schemas["urn:jsv:empty-schema#"];
};
/**
* Returns the schema registered with the provided URI.
*
* @param {String} uri The absolute URI of the required schema
* @returns {JSONSchema|undefined} The request schema, or <code>undefined</code> if not found
*/
Environment.prototype.findSchema = function (uri) {
return this._schemas[formatURI(uri)];
};
/**
* Sets the specified environment option to the specified value.
*
* @param {String} name The name of the environment option to set
* @param {Any} value The new value of the environment option
*/
Environment.prototype.setOption = function (name, value) {
this._options[name] = value;
};
/**
* Returns the specified environment option.
*
* @param {String} name The name of the environment option to set
* @returns {Any} The value of the environment option
*/
Environment.prototype.getOption = function (name) {
return this._options[name];
};
/**
* Sets the default fragment delimiter of the environment.
*
* @deprecated Use {@link Environment#setOption} with option "defaultFragmentDelimiter"
* @param {String} fd The fragment delimiter character
*/
Environment.prototype.setDefaultFragmentDelimiter = function (fd) {
if (typeof fd === "string" && fd.length > 0) {
this._options["defaultFragmentDelimiter"] = fd;
}
};
/**
* Returns the default fragment delimiter of the environment.
*
* @deprecated Use {@link Environment#getOption} with option "defaultFragmentDelimiter"
* @returns {String} The fragment delimiter character
*/
Environment.prototype.getDefaultFragmentDelimiter = function () {
return this._options["defaultFragmentDelimiter"];
};
/**
* Sets the URI of the default schema for the environment.
*
* @deprecated Use {@link Environment#setOption} with option "defaultSchemaURI"
* @param {String} uri The default schema URI
*/
Environment.prototype.setDefaultSchemaURI = function (uri) {
if (typeof uri === "string") {
this._options["defaultSchemaURI"] = formatURI(uri);
}
};
/**
* Returns the default schema of the environment.
*
* @returns {JSONSchema} The default schema
*/
Environment.prototype.getDefaultSchema = function () {
return this.findSchema(this._options["defaultSchemaURI"]);
};
/**
* Validates both the provided schema and the provided instance, and returns a {@link Report}.
* If the schema fails to validate, the instance will not be validated.
*
* @param {JSONInstance|Any} instanceJSON The {@link JSONInstance} or JavaScript value to validate.
* @param {JSONSchema|Any} schemaJSON The {@link JSONSchema} or JavaScript value to use in the validation. This will also be validated againt the schema's schema.
* @returns {Report} The result of the validation
*/
Environment.prototype.validate = function (instanceJSON, schemaJSON) {
var instance,
schema,
schemaSchema,
report = new Report();
try {
instance = this.createInstance(instanceJSON);
report.instance = instance;
} catch (e) {
report.addError(e.uri, e.schemaUri, e.attribute, e.message, e.details);
}
try {
schema = this.createSchema(schemaJSON);
report.schema = schema;
schemaSchema = schema.getSchema();
report.schemaSchema = schemaSchema;
} catch (f) {
report.addError(f.uri, f.schemaUri, f.attribute, f.message, f.details);
}
if (schemaSchema) {
schemaSchema.validate(schema, report);
}
if (report.errors.length) {
return report;
}
return schema.validate(instance, report);
};
/**
* @private
*/
Environment.prototype._checkForInvalidInstances = function (stackSize, schemaURI) {
var result = [],
stack = [
[schemaURI, this._schemas[schemaURI]]
],
counter = 0,
item, uri, instance, properties, key;
while (counter++ < stackSize && stack.length) {
item = stack.shift();
uri = item[0];
instance = item[1];
if (instance instanceof JSONSchema) {
if (this._schemas[instance._uri] !== instance) {
result.push("Instance " + uri + " does not match " + instance._uri);
} else {
//schema = instance.getSchema();
//stack.push([uri + "/{schema}", schema]);
properties = instance.getAttributes();
for (key in properties) {
if (properties[key] !== O[key]) {
stack.push([uri + "/" + escapeURIComponent(key), properties[key]]);
}
}
}
} else if (typeOf(instance) === "object") {
properties = instance;
for (key in properties) {
if (properties.hasOwnProperty(key)) {
stack.push([uri + "/" + escapeURIComponent(key), properties[key]]);
}
}
} else if (typeOf(instance) === "array") {
properties = instance;
for (key = 0; key < properties.length; ++key) {
stack.push([uri + "/" + escapeURIComponent(key), properties[key]]);
}
}
}
return result.length ? result : counter;
};
/**
* A globaly accessible object that provides the ability to create and manage {@link Environments},
* as well as providing utility methods.
*
* @namespace
*/
JSV = {
_environments : {},
_defaultEnvironmentID : "",
/**
* Returns if the provide value is an instance of {@link JSONInstance}.
*
* @param o The value to test
* @returns {Boolean} If the provide value is an instance of {@link JSONInstance}
*/
isJSONInstance : function (o) {
return o instanceof JSONInstance;
},
/**
* Returns if the provide value is an instance of {@link JSONSchema}.
*
* @param o The value to test
* @returns {Boolean} If the provide value is an instance of {@link JSONSchema}
*/
isJSONSchema : function (o) {
return o instanceof JSONSchema;
},
/**
* Creates and returns a new {@link Environment} that is a clone of the environment registered with the provided ID.
* If no environment ID is provided, the default environment is cloned.
*
* @param {String} [id] The ID of the environment to clone. If <code>undefined</code>, the default environment ID is used.
* @returns {Environment} A newly cloned {@link Environment}
* @throws {Error} If there is no environment registered with the provided ID
*/
createEnvironment : function (id) {
id = id || this._defaultEnvironmentID;
if (!this._environments[id]) {
throw new Error("Unknown Environment ID");
}
//else
return this._environments[id].clone();
},
Environment : Environment,
/**
* Registers the provided {@link Environment} with the provided ID.
*
* @param {String} id The ID of the environment
* @param {Environment} env The environment to register
*/
registerEnvironment : function (id, env) {
id = id || (env || 0)._id;
if (id && !this._environments[id] && env instanceof Environment) {
env._id = id;
this._environments[id] = env;
}
},
/**
* Sets which registered ID is the default environment.
*
* @param {String} id The ID of the registered environment that is default
* @throws {Error} If there is no registered environment with the provided ID
*/
setDefaultEnvironmentID : function (id) {
if (typeof id === "string") {
if (!this._environments[id]) {
throw new Error("Unknown Environment ID");
}
this._defaultEnvironmentID = id;
}
},
/**
* Returns the ID of the default environment.
*
* @returns {String} The ID of the default environment
*/
getDefaultEnvironmentID : function () {
return this._defaultEnvironmentID;
},
//
// Utility Functions
//
/**
* Returns the name of the type of the provided value.
*
* @event //utility
* @param {Any} o The value to determine the type of
* @returns {String} The name of the type of the value
*/
typeOf : typeOf,
/**
* Return a new object that inherits all of the properties of the provided object.
*
* @event //utility
* @param {Object} proto The prototype of the new object
* @returns {Object} A new object that inherits all of the properties of the provided object
*/
createObject : createObject,
/**
* Returns a new object with each property transformed by the iterator.
*
* @event //utility
* @param {Object} obj The object to transform
* @param {Function} iterator A function that returns the new value of the provided property
* @param {Object} [scope] The value of <code>this</code> in the iterator
* @returns {Object} A new object with each property transformed
*/
mapObject : mapObject,
/**
* Returns a new array with each item transformed by the iterator.
*
* @event //utility
* @param {Array} arr The array to transform
* @param {Function} iterator A function that returns the new value of the provided item
* @param {Object} scope The value of <code>this</code> in the iterator
* @returns {Array} A new array with each item transformed
*/
mapArray : mapArray,
/**
* Returns a new array that only contains the items allowed by the iterator.
*
* @event //utility
* @param {Array} arr The array to filter
* @param {Function} iterator The function that returns true if the provided property should be added to the array
* @param {Object} scope The value of <code>this</code> within the iterator
* @returns {Array} A new array that contains the items allowed by the iterator
*/
filterArray : filterArray,
/**
* Returns the first index in the array that the provided item is located at.
*
* @event //utility
* @param {Array} arr The array to search
* @param {Any} o The item being searched for
* @returns {Number} The index of the item in the array, or <code>-1</code> if not found
*/
searchArray : searchArray,
/**
* Returns an array representation of a value.
* <ul>
* <li>For array-like objects, the value will be casted as an Array type.</li>
* <li>If an array is provided, the function will simply return the same array.</li>
* <li>For a null or undefined value, the result will be an empty Array.</li>
* <li>For all other values, the value will be the first element in a new Array. </li>
* </ul>
*
* @event //utility
* @param {Any} o The value to convert into an array
* @returns {Array} The value as an array
*/
toArray : toArray,
/**
* Returns an array of the names of all properties of an object.
*
* @event //utility
* @param {Object|Array} o The object in question
* @returns {Array} The names of all properties
*/
keys : keys,
/**
* Mutates the array by pushing the provided value onto the array only if it is not already there.
*
* @event //utility
* @param {Array} arr The array to modify
* @param {Any} o The object to add to the array if it is not already there
* @returns {Array} The provided array for chaining
*/
pushUnique : pushUnique,
/**
* Mutates the array by removing the first item that matches the provided value in the array.
*
* @event //utility
* @param {Array} arr The array to modify
* @param {Any} o The object to remove from the array
* @returns {Array} The provided array for chaining
*/
popFirst : popFirst,
/**
* Creates a copy of the target object.
* <p>
* This method will create a new instance of the target, and then mixin the properties of the target.
* If <code>deep</code> is <code>true</code>, then each property will be cloned before mixin.
* </p>
* <p><b>Warning</b>: This is not a generic clone function, as it will only properly clone objects and arrays.</p>
*
* @event //utility
* @param {Any} o The value to clone
* @param {Boolean} [deep=false] If each property should be recursively cloned
* @returns A cloned copy of the provided value
*/
clone : clone,
/**
* Generates a pseudo-random UUID.
*
* @event //utility
* @returns {String} A new universally unique ID
*/
randomUUID : randomUUID,
/**
* Properly escapes a URI component for embedding into a URI string.
*
* @event //utility
* @param {String} str The URI component to escape
* @returns {String} The escaped URI component
*/
escapeURIComponent : escapeURIComponent,
/**
* Returns a URI that is formated for JSV. Currently, this only ensures that the URI ends with a hash tag (<code>#</code>).
*
* @event //utility
* @param {String} uri The URI to format
* @returns {String} The URI formatted for JSV
*/
formatURI : formatURI,
/**
* Merges two schemas/instance together.
*
* @event //utility
* @param {JSONSchema|Any} base The old value to merge
* @param {JSONSchema|Any} extra The new value to merge
* @param {Boolean} extension If the merge is a JSON Schema extension
* @return {Any} The modified base value
*/
inherits : inherits,
/**
* @private
* @event //utility
*/
InitializationError : InitializationError
};
this.JSV = JSV; //set global object
exports.JSV = JSV; //export to CommonJS
require("./environments"); //load default environments
}());