448 lines
14 KiB
JavaScript
448 lines
14 KiB
JavaScript
'use strict';
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// Load modules
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const Hoek = require('hoek');
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const Any = require('./types/any');
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const Cast = require('./cast');
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const Errors = require('./errors');
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const Lazy = require('./types/lazy');
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const Ref = require('./ref');
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const Settings = require('./types/any/settings');
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// Declare internals
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const internals = {
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alternatives: require('./types/alternatives'),
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array: require('./types/array'),
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boolean: require('./types/boolean'),
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binary: require('./types/binary'),
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date: require('./types/date'),
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func: require('./types/func'),
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number: require('./types/number'),
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object: require('./types/object'),
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string: require('./types/string'),
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symbol: require('./types/symbol')
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};
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internals.callWithDefaults = function (schema, args) {
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Hoek.assert(this, 'Must be invoked on a Joi instance.');
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if (this._defaults) {
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schema = this._defaults(schema);
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}
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schema._currentJoi = this;
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return schema._init(...args);
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};
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internals.root = function () {
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const any = new Any();
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const root = any.clone();
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Any.prototype._currentJoi = root;
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root._currentJoi = root;
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root.any = function (...args) {
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Hoek.assert(args.length === 0, 'Joi.any() does not allow arguments.');
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return internals.callWithDefaults.call(this, any, args);
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};
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root.alternatives = root.alt = function (...args) {
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return internals.callWithDefaults.call(this, internals.alternatives, args);
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};
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root.array = function (...args) {
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Hoek.assert(args.length === 0, 'Joi.array() does not allow arguments.');
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return internals.callWithDefaults.call(this, internals.array, args);
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};
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root.boolean = root.bool = function (...args) {
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Hoek.assert(args.length === 0, 'Joi.boolean() does not allow arguments.');
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return internals.callWithDefaults.call(this, internals.boolean, args);
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};
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root.binary = function (...args) {
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Hoek.assert(args.length === 0, 'Joi.binary() does not allow arguments.');
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return internals.callWithDefaults.call(this, internals.binary, args);
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};
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root.date = function (...args) {
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Hoek.assert(args.length === 0, 'Joi.date() does not allow arguments.');
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return internals.callWithDefaults.call(this, internals.date, args);
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};
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root.func = function (...args) {
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Hoek.assert(args.length === 0, 'Joi.func() does not allow arguments.');
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return internals.callWithDefaults.call(this, internals.func, args);
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};
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root.number = function (...args) {
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Hoek.assert(args.length === 0, 'Joi.number() does not allow arguments.');
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return internals.callWithDefaults.call(this, internals.number, args);
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};
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root.object = function (...args) {
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return internals.callWithDefaults.call(this, internals.object, args);
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};
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root.string = function (...args) {
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Hoek.assert(args.length === 0, 'Joi.string() does not allow arguments.');
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return internals.callWithDefaults.call(this, internals.string, args);
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};
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root.symbol = function (...args) {
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Hoek.assert(args.length === 0, 'Joi.symbol() does not allow arguments.');
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return internals.callWithDefaults.call(this, internals.symbol, args);
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};
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root.ref = function (...args) {
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return Ref.create(...args);
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};
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root.isRef = function (ref) {
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return Ref.isRef(ref);
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};
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root.validate = function (value, ...args /*, [schema], [options], callback */) {
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const last = args[args.length - 1];
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const callback = typeof last === 'function' ? last : null;
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const count = args.length - (callback ? 1 : 0);
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if (count === 0) {
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return any.validate(value, callback);
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}
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const options = count === 2 ? args[1] : undefined;
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const schema = root.compile(args[0]);
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return schema._validateWithOptions(value, options, callback);
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};
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root.describe = function (...args) {
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const schema = args.length ? root.compile(args[0]) : any;
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return schema.describe();
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};
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root.compile = function (schema) {
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try {
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return Cast.schema(this, schema);
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}
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catch (err) {
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if (err.hasOwnProperty('path')) {
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err.message = err.message + '(' + err.path + ')';
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}
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throw err;
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}
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};
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root.assert = function (value, schema, message) {
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root.attempt(value, schema, message);
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};
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root.attempt = function (value, schema, message) {
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const result = root.validate(value, schema);
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const error = result.error;
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if (error) {
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if (!message) {
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if (typeof error.annotate === 'function') {
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error.message = error.annotate();
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}
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throw error;
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}
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if (!(message instanceof Error)) {
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if (typeof error.annotate === 'function') {
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error.message = `${message} ${error.annotate()}`;
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}
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throw error;
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}
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throw message;
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}
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return result.value;
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};
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root.reach = function (schema, path) {
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Hoek.assert(schema && schema instanceof Any, 'you must provide a joi schema');
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Hoek.assert(Array.isArray(path) || typeof path === 'string', 'path must be a string or an array of strings');
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const reach = (sourceSchema, schemaPath) => {
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if (!schemaPath.length) {
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return sourceSchema;
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}
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const children = sourceSchema._inner.children;
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if (!children) {
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return;
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}
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const key = schemaPath.shift();
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for (let i = 0; i < children.length; ++i) {
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const child = children[i];
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if (child.key === key) {
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return reach(child.schema, schemaPath);
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}
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}
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};
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const schemaPath = typeof path === 'string' ? (path ? path.split('.') : []) : path.slice();
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return reach(schema, schemaPath);
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};
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root.lazy = function (fn) {
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return Lazy.set(fn);
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};
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root.defaults = function (fn) {
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Hoek.assert(typeof fn === 'function', 'Defaults must be a function');
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let joi = Object.create(this.any());
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joi = fn(joi);
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Hoek.assert(joi && joi instanceof this.constructor, 'defaults() must return a schema');
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Object.assign(joi, this, joi.clone()); // Re-add the types from `this` but also keep the settings from joi's potential new defaults
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joi._defaults = (schema) => {
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if (this._defaults) {
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schema = this._defaults(schema);
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Hoek.assert(schema instanceof this.constructor, 'defaults() must return a schema');
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}
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schema = fn(schema);
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Hoek.assert(schema instanceof this.constructor, 'defaults() must return a schema');
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return schema;
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};
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return joi;
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};
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root.extend = function (...args) {
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const extensions = Hoek.flatten(args);
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Hoek.assert(extensions.length > 0, 'You need to provide at least one extension');
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this.assert(extensions, root.extensionsSchema);
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const joi = Object.create(this.any());
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Object.assign(joi, this);
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for (let i = 0; i < extensions.length; ++i) {
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let extension = extensions[i];
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if (typeof extension === 'function') {
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extension = extension(joi);
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}
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this.assert(extension, root.extensionSchema);
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const base = (extension.base || this.any()).clone(); // Cloning because we're going to override language afterwards
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const ctor = base.constructor;
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const type = class extends ctor { // eslint-disable-line no-loop-func
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constructor() {
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super();
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if (extension.base) {
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Object.assign(this, base);
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}
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this._type = extension.name;
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if (extension.language) {
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this._settings = Settings.concat(this._settings, {
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language: {
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[extension.name]: extension.language
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}
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});
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}
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}
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};
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if (extension.coerce) {
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type.prototype._coerce = function (value, state, options) {
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if (ctor.prototype._coerce) {
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const baseRet = ctor.prototype._coerce.call(this, value, state, options);
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if (baseRet.errors) {
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return baseRet;
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}
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value = baseRet.value;
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}
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const ret = extension.coerce.call(this, value, state, options);
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if (ret instanceof Errors.Err) {
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return { value, errors: ret };
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}
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return { value: ret };
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};
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}
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if (extension.pre) {
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type.prototype._base = function (value, state, options) {
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if (ctor.prototype._base) {
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const baseRet = ctor.prototype._base.call(this, value, state, options);
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if (baseRet.errors) {
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return baseRet;
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}
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value = baseRet.value;
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}
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const ret = extension.pre.call(this, value, state, options);
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if (ret instanceof Errors.Err) {
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return { value, errors: ret };
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}
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return { value: ret };
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};
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}
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if (extension.rules) {
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for (let j = 0; j < extension.rules.length; ++j) {
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const rule = extension.rules[j];
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const ruleArgs = rule.params ?
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(rule.params instanceof Any ? rule.params._inner.children.map((k) => k.key) : Object.keys(rule.params)) :
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[];
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const validateArgs = rule.params ? Cast.schema(this, rule.params) : null;
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type.prototype[rule.name] = function (...rArgs) { // eslint-disable-line no-loop-func
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if (rArgs.length > ruleArgs.length) {
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throw new Error('Unexpected number of arguments');
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}
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let hasRef = false;
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let arg = {};
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for (let k = 0; k < ruleArgs.length; ++k) {
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arg[ruleArgs[k]] = rArgs[k];
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if (!hasRef && Ref.isRef(rArgs[k])) {
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hasRef = true;
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}
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}
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if (validateArgs) {
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arg = joi.attempt(arg, validateArgs);
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}
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let schema;
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if (rule.validate) {
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const validate = function (value, state, options) {
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return rule.validate.call(this, arg, value, state, options);
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};
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schema = this._test(rule.name, arg, validate, {
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description: rule.description,
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hasRef
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});
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}
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else {
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schema = this.clone();
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}
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if (rule.setup) {
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const newSchema = rule.setup.call(schema, arg);
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if (newSchema !== undefined) {
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Hoek.assert(newSchema instanceof Any, `Setup of extension Joi.${this._type}().${rule.name}() must return undefined or a Joi object`);
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schema = newSchema;
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}
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}
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return schema;
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};
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}
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}
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if (extension.describe) {
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type.prototype.describe = function () {
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const description = ctor.prototype.describe.call(this);
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return extension.describe.call(this, description);
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};
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}
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const instance = new type();
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joi[extension.name] = function (...extArgs) {
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return internals.callWithDefaults.call(this, instance, extArgs);
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};
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}
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return joi;
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};
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root.extensionSchema = internals.object.keys({
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base: internals.object.type(Any, 'Joi object'),
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name: internals.string.required(),
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coerce: internals.func.arity(3),
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pre: internals.func.arity(3),
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language: internals.object,
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describe: internals.func.arity(1),
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rules: internals.array.items(internals.object.keys({
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name: internals.string.required(),
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setup: internals.func.arity(1),
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validate: internals.func.arity(4),
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params: [
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internals.object.pattern(/.*/, internals.object.type(Any, 'Joi object')),
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internals.object.type(internals.object.constructor, 'Joi object')
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],
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description: [internals.string, internals.func.arity(1)]
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}).or('setup', 'validate'))
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}).strict();
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root.extensionsSchema = internals.array.items([internals.object, internals.func.arity(1)]).strict();
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root.version = require('../package.json').version;
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return root;
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};
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module.exports = internals.root();
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