--- /dev/null
+'use strict';
+
+var compileSchema = require('./compile')
+ , resolve = require('./compile/resolve')
+ , Cache = require('./cache')
+ , SchemaObject = require('./compile/schema_obj')
+ , stableStringify = require('fast-json-stable-stringify')
+ , formats = require('./compile/formats')
+ , rules = require('./compile/rules')
+ , $dataMetaSchema = require('./data')
+ , util = require('./compile/util');
+
+module.exports = Ajv;
+
+Ajv.prototype.validate = validate;
+Ajv.prototype.compile = compile;
+Ajv.prototype.addSchema = addSchema;
+Ajv.prototype.addMetaSchema = addMetaSchema;
+Ajv.prototype.validateSchema = validateSchema;
+Ajv.prototype.getSchema = getSchema;
+Ajv.prototype.removeSchema = removeSchema;
+Ajv.prototype.addFormat = addFormat;
+Ajv.prototype.errorsText = errorsText;
+
+Ajv.prototype._addSchema = _addSchema;
+Ajv.prototype._compile = _compile;
+
+Ajv.prototype.compileAsync = require('./compile/async');
+var customKeyword = require('./keyword');
+Ajv.prototype.addKeyword = customKeyword.add;
+Ajv.prototype.getKeyword = customKeyword.get;
+Ajv.prototype.removeKeyword = customKeyword.remove;
+Ajv.prototype.validateKeyword = customKeyword.validate;
+
+var errorClasses = require('./compile/error_classes');
+Ajv.ValidationError = errorClasses.Validation;
+Ajv.MissingRefError = errorClasses.MissingRef;
+Ajv.$dataMetaSchema = $dataMetaSchema;
+
+var META_SCHEMA_ID = 'http://json-schema.org/draft-07/schema';
+
+var META_IGNORE_OPTIONS = [ 'removeAdditional', 'useDefaults', 'coerceTypes', 'strictDefaults' ];
+var META_SUPPORT_DATA = ['/properties'];
+
+/**
+ * Creates validator instance.
+ * Usage: `Ajv(opts)`
+ * @param {Object} opts optional options
+ * @return {Object} ajv instance
+ */
+function Ajv(opts) {
+ if (!(this instanceof Ajv)) return new Ajv(opts);
+ opts = this._opts = util.copy(opts) || {};
+ setLogger(this);
+ this._schemas = {};
+ this._refs = {};
+ this._fragments = {};
+ this._formats = formats(opts.format);
+
+ this._cache = opts.cache || new Cache;
+ this._loadingSchemas = {};
+ this._compilations = [];
+ this.RULES = rules();
+ this._getId = chooseGetId(opts);
+
+ opts.loopRequired = opts.loopRequired || Infinity;
+ if (opts.errorDataPath == 'property') opts._errorDataPathProperty = true;
+ if (opts.serialize === undefined) opts.serialize = stableStringify;
+ this._metaOpts = getMetaSchemaOptions(this);
+
+ if (opts.formats) addInitialFormats(this);
+ if (opts.keywords) addInitialKeywords(this);
+ addDefaultMetaSchema(this);
+ if (typeof opts.meta == 'object') this.addMetaSchema(opts.meta);
+ if (opts.nullable) this.addKeyword('nullable', {metaSchema: {type: 'boolean'}});
+ addInitialSchemas(this);
+}
+
+
+
+/**
+ * Validate data using schema
+ * Schema will be compiled and cached (using serialized JSON as key. [fast-json-stable-stringify](https://github.com/epoberezkin/fast-json-stable-stringify) is used to serialize.
+ * @this Ajv
+ * @param {String|Object} schemaKeyRef key, ref or schema object
+ * @param {Any} data to be validated
+ * @return {Boolean} validation result. Errors from the last validation will be available in `ajv.errors` (and also in compiled schema: `schema.errors`).
+ */
+function validate(schemaKeyRef, data) {
+ var v;
+ if (typeof schemaKeyRef == 'string') {
+ v = this.getSchema(schemaKeyRef);
+ if (!v) throw new Error('no schema with key or ref "' + schemaKeyRef + '"');
+ } else {
+ var schemaObj = this._addSchema(schemaKeyRef);
+ v = schemaObj.validate || this._compile(schemaObj);
+ }
+
+ var valid = v(data);
+ if (v.$async !== true) this.errors = v.errors;
+ return valid;
+}
+
+
+/**
+ * Create validating function for passed schema.
+ * @this Ajv
+ * @param {Object} schema schema object
+ * @param {Boolean} _meta true if schema is a meta-schema. Used internally to compile meta schemas of custom keywords.
+ * @return {Function} validating function
+ */
+function compile(schema, _meta) {
+ var schemaObj = this._addSchema(schema, undefined, _meta);
+ return schemaObj.validate || this._compile(schemaObj);
+}
+
+
+/**
+ * Adds schema to the instance.
+ * @this Ajv
+ * @param {Object|Array} schema schema or array of schemas. If array is passed, `key` and other parameters will be ignored.
+ * @param {String} key Optional schema key. Can be passed to `validate` method instead of schema object or id/ref. One schema per instance can have empty `id` and `key`.
+ * @param {Boolean} _skipValidation true to skip schema validation. Used internally, option validateSchema should be used instead.
+ * @param {Boolean} _meta true if schema is a meta-schema. Used internally, addMetaSchema should be used instead.
+ * @return {Ajv} this for method chaining
+ */
+function addSchema(schema, key, _skipValidation, _meta) {
+ if (Array.isArray(schema)){
+ for (var i=0; i<schema.length; i++) this.addSchema(schema[i], undefined, _skipValidation, _meta);
+ return this;
+ }
+ var id = this._getId(schema);
+ if (id !== undefined && typeof id != 'string')
+ throw new Error('schema id must be string');
+ key = resolve.normalizeId(key || id);
+ checkUnique(this, key);
+ this._schemas[key] = this._addSchema(schema, _skipValidation, _meta, true);
+ return this;
+}
+
+
+/**
+ * Add schema that will be used to validate other schemas
+ * options in META_IGNORE_OPTIONS are alway set to false
+ * @this Ajv
+ * @param {Object} schema schema object
+ * @param {String} key optional schema key
+ * @param {Boolean} skipValidation true to skip schema validation, can be used to override validateSchema option for meta-schema
+ * @return {Ajv} this for method chaining
+ */
+function addMetaSchema(schema, key, skipValidation) {
+ this.addSchema(schema, key, skipValidation, true);
+ return this;
+}
+
+
+/**
+ * Validate schema
+ * @this Ajv
+ * @param {Object} schema schema to validate
+ * @param {Boolean} throwOrLogError pass true to throw (or log) an error if invalid
+ * @return {Boolean} true if schema is valid
+ */
+function validateSchema(schema, throwOrLogError) {
+ var $schema = schema.$schema;
+ if ($schema !== undefined && typeof $schema != 'string')
+ throw new Error('$schema must be a string');
+ $schema = $schema || this._opts.defaultMeta || defaultMeta(this);
+ if (!$schema) {
+ this.logger.warn('meta-schema not available');
+ this.errors = null;
+ return true;
+ }
+ var valid = this.validate($schema, schema);
+ if (!valid && throwOrLogError) {
+ var message = 'schema is invalid: ' + this.errorsText();
+ if (this._opts.validateSchema == 'log') this.logger.error(message);
+ else throw new Error(message);
+ }
+ return valid;
+}
+
+
+function defaultMeta(self) {
+ var meta = self._opts.meta;
+ self._opts.defaultMeta = typeof meta == 'object'
+ ? self._getId(meta) || meta
+ : self.getSchema(META_SCHEMA_ID)
+ ? META_SCHEMA_ID
+ : undefined;
+ return self._opts.defaultMeta;
+}
+
+
+/**
+ * Get compiled schema from the instance by `key` or `ref`.
+ * @this Ajv
+ * @param {String} keyRef `key` that was passed to `addSchema` or full schema reference (`schema.id` or resolved id).
+ * @return {Function} schema validating function (with property `schema`).
+ */
+function getSchema(keyRef) {
+ var schemaObj = _getSchemaObj(this, keyRef);
+ switch (typeof schemaObj) {
+ case 'object': return schemaObj.validate || this._compile(schemaObj);
+ case 'string': return this.getSchema(schemaObj);
+ case 'undefined': return _getSchemaFragment(this, keyRef);
+ }
+}
+
+
+function _getSchemaFragment(self, ref) {
+ var res = resolve.schema.call(self, { schema: {} }, ref);
+ if (res) {
+ var schema = res.schema
+ , root = res.root
+ , baseId = res.baseId;
+ var v = compileSchema.call(self, schema, root, undefined, baseId);
+ self._fragments[ref] = new SchemaObject({
+ ref: ref,
+ fragment: true,
+ schema: schema,
+ root: root,
+ baseId: baseId,
+ validate: v
+ });
+ return v;
+ }
+}
+
+
+function _getSchemaObj(self, keyRef) {
+ keyRef = resolve.normalizeId(keyRef);
+ return self._schemas[keyRef] || self._refs[keyRef] || self._fragments[keyRef];
+}
+
+
+/**
+ * Remove cached schema(s).
+ * If no parameter is passed all schemas but meta-schemas are removed.
+ * If RegExp is passed all schemas with key/id matching pattern but meta-schemas are removed.
+ * Even if schema is referenced by other schemas it still can be removed as other schemas have local references.
+ * @this Ajv
+ * @param {String|Object|RegExp} schemaKeyRef key, ref, pattern to match key/ref or schema object
+ * @return {Ajv} this for method chaining
+ */
+function removeSchema(schemaKeyRef) {
+ if (schemaKeyRef instanceof RegExp) {
+ _removeAllSchemas(this, this._schemas, schemaKeyRef);
+ _removeAllSchemas(this, this._refs, schemaKeyRef);
+ return this;
+ }
+ switch (typeof schemaKeyRef) {
+ case 'undefined':
+ _removeAllSchemas(this, this._schemas);
+ _removeAllSchemas(this, this._refs);
+ this._cache.clear();
+ return this;
+ case 'string':
+ var schemaObj = _getSchemaObj(this, schemaKeyRef);
+ if (schemaObj) this._cache.del(schemaObj.cacheKey);
+ delete this._schemas[schemaKeyRef];
+ delete this._refs[schemaKeyRef];
+ return this;
+ case 'object':
+ var serialize = this._opts.serialize;
+ var cacheKey = serialize ? serialize(schemaKeyRef) : schemaKeyRef;
+ this._cache.del(cacheKey);
+ var id = this._getId(schemaKeyRef);
+ if (id) {
+ id = resolve.normalizeId(id);
+ delete this._schemas[id];
+ delete this._refs[id];
+ }
+ }
+ return this;
+}
+
+
+function _removeAllSchemas(self, schemas, regex) {
+ for (var keyRef in schemas) {
+ var schemaObj = schemas[keyRef];
+ if (!schemaObj.meta && (!regex || regex.test(keyRef))) {
+ self._cache.del(schemaObj.cacheKey);
+ delete schemas[keyRef];
+ }
+ }
+}
+
+
+/* @this Ajv */
+function _addSchema(schema, skipValidation, meta, shouldAddSchema) {
+ if (typeof schema != 'object' && typeof schema != 'boolean')
+ throw new Error('schema should be object or boolean');
+ var serialize = this._opts.serialize;
+ var cacheKey = serialize ? serialize(schema) : schema;
+ var cached = this._cache.get(cacheKey);
+ if (cached) return cached;
+
+ shouldAddSchema = shouldAddSchema || this._opts.addUsedSchema !== false;
+
+ var id = resolve.normalizeId(this._getId(schema));
+ if (id && shouldAddSchema) checkUnique(this, id);
+
+ var willValidate = this._opts.validateSchema !== false && !skipValidation;
+ var recursiveMeta;
+ if (willValidate && !(recursiveMeta = id && id == resolve.normalizeId(schema.$schema)))
+ this.validateSchema(schema, true);
+
+ var localRefs = resolve.ids.call(this, schema);
+
+ var schemaObj = new SchemaObject({
+ id: id,
+ schema: schema,
+ localRefs: localRefs,
+ cacheKey: cacheKey,
+ meta: meta
+ });
+
+ if (id[0] != '#' && shouldAddSchema) this._refs[id] = schemaObj;
+ this._cache.put(cacheKey, schemaObj);
+
+ if (willValidate && recursiveMeta) this.validateSchema(schema, true);
+
+ return schemaObj;
+}
+
+
+/* @this Ajv */
+function _compile(schemaObj, root) {
+ if (schemaObj.compiling) {
+ schemaObj.validate = callValidate;
+ callValidate.schema = schemaObj.schema;
+ callValidate.errors = null;
+ callValidate.root = root ? root : callValidate;
+ if (schemaObj.schema.$async === true)
+ callValidate.$async = true;
+ return callValidate;
+ }
+ schemaObj.compiling = true;
+
+ var currentOpts;
+ if (schemaObj.meta) {
+ currentOpts = this._opts;
+ this._opts = this._metaOpts;
+ }
+
+ var v;
+ try { v = compileSchema.call(this, schemaObj.schema, root, schemaObj.localRefs); }
+ catch(e) {
+ delete schemaObj.validate;
+ throw e;
+ }
+ finally {
+ schemaObj.compiling = false;
+ if (schemaObj.meta) this._opts = currentOpts;
+ }
+
+ schemaObj.validate = v;
+ schemaObj.refs = v.refs;
+ schemaObj.refVal = v.refVal;
+ schemaObj.root = v.root;
+ return v;
+
+
+ /* @this {*} - custom context, see passContext option */
+ function callValidate() {
+ /* jshint validthis: true */
+ var _validate = schemaObj.validate;
+ var result = _validate.apply(this, arguments);
+ callValidate.errors = _validate.errors;
+ return result;
+ }
+}
+
+
+function chooseGetId(opts) {
+ switch (opts.schemaId) {
+ case 'auto': return _get$IdOrId;
+ case 'id': return _getId;
+ default: return _get$Id;
+ }
+}
+
+/* @this Ajv */
+function _getId(schema) {
+ if (schema.$id) this.logger.warn('schema $id ignored', schema.$id);
+ return schema.id;
+}
+
+/* @this Ajv */
+function _get$Id(schema) {
+ if (schema.id) this.logger.warn('schema id ignored', schema.id);
+ return schema.$id;
+}
+
+
+function _get$IdOrId(schema) {
+ if (schema.$id && schema.id && schema.$id != schema.id)
+ throw new Error('schema $id is different from id');
+ return schema.$id || schema.id;
+}
+
+
+/**
+ * Convert array of error message objects to string
+ * @this Ajv
+ * @param {Array<Object>} errors optional array of validation errors, if not passed errors from the instance are used.
+ * @param {Object} options optional options with properties `separator` and `dataVar`.
+ * @return {String} human readable string with all errors descriptions
+ */
+function errorsText(errors, options) {
+ errors = errors || this.errors;
+ if (!errors) return 'No errors';
+ options = options || {};
+ var separator = options.separator === undefined ? ', ' : options.separator;
+ var dataVar = options.dataVar === undefined ? 'data' : options.dataVar;
+
+ var text = '';
+ for (var i=0; i<errors.length; i++) {
+ var e = errors[i];
+ if (e) text += dataVar + e.dataPath + ' ' + e.message + separator;
+ }
+ return text.slice(0, -separator.length);
+}
+
+
+/**
+ * Add custom format
+ * @this Ajv
+ * @param {String} name format name
+ * @param {String|RegExp|Function} format string is converted to RegExp; function should return boolean (true when valid)
+ * @return {Ajv} this for method chaining
+ */
+function addFormat(name, format) {
+ if (typeof format == 'string') format = new RegExp(format);
+ this._formats[name] = format;
+ return this;
+}
+
+
+function addDefaultMetaSchema(self) {
+ var $dataSchema;
+ if (self._opts.$data) {
+ $dataSchema = require('./refs/data.json');
+ self.addMetaSchema($dataSchema, $dataSchema.$id, true);
+ }
+ if (self._opts.meta === false) return;
+ var metaSchema = require('./refs/json-schema-draft-07.json');
+ if (self._opts.$data) metaSchema = $dataMetaSchema(metaSchema, META_SUPPORT_DATA);
+ self.addMetaSchema(metaSchema, META_SCHEMA_ID, true);
+ self._refs['http://json-schema.org/schema'] = META_SCHEMA_ID;
+}
+
+
+function addInitialSchemas(self) {
+ var optsSchemas = self._opts.schemas;
+ if (!optsSchemas) return;
+ if (Array.isArray(optsSchemas)) self.addSchema(optsSchemas);
+ else for (var key in optsSchemas) self.addSchema(optsSchemas[key], key);
+}
+
+
+function addInitialFormats(self) {
+ for (var name in self._opts.formats) {
+ var format = self._opts.formats[name];
+ self.addFormat(name, format);
+ }
+}
+
+
+function addInitialKeywords(self) {
+ for (var name in self._opts.keywords) {
+ var keyword = self._opts.keywords[name];
+ self.addKeyword(name, keyword);
+ }
+}
+
+
+function checkUnique(self, id) {
+ if (self._schemas[id] || self._refs[id])
+ throw new Error('schema with key or id "' + id + '" already exists');
+}
+
+
+function getMetaSchemaOptions(self) {
+ var metaOpts = util.copy(self._opts);
+ for (var i=0; i<META_IGNORE_OPTIONS.length; i++)
+ delete metaOpts[META_IGNORE_OPTIONS[i]];
+ return metaOpts;
+}
+
+
+function setLogger(self) {
+ var logger = self._opts.logger;
+ if (logger === false) {
+ self.logger = {log: noop, warn: noop, error: noop};
+ } else {
+ if (logger === undefined) logger = console;
+ if (!(typeof logger == 'object' && logger.log && logger.warn && logger.error))
+ throw new Error('logger must implement log, warn and error methods');
+ self.logger = logger;
+ }
+}
+
+
+function noop() {}
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