| 'use strict'; |
| |
| var IDENTIFIER = /^[a-z_$][a-z0-9_$-]*$/i; |
| var customRuleCode = require('./dotjs/custom'); |
| var definitionSchema = require('./definition_schema'); |
| |
| module.exports = { |
| add: addKeyword, |
| get: getKeyword, |
| remove: removeKeyword, |
| validate: validateKeyword |
| }; |
| |
| |
| /** |
| * Define custom keyword |
| * @this Ajv |
| * @param {String} keyword custom keyword, should be unique (including different from all standard, custom and macro keywords). |
| * @param {Object} definition keyword definition object with properties `type` (type(s) which the keyword applies to), `validate` or `compile`. |
| * @return {Ajv} this for method chaining |
| */ |
| function addKeyword(keyword, definition) { |
| /* jshint validthis: true */ |
| /* eslint no-shadow: 0 */ |
| var RULES = this.RULES; |
| if (RULES.keywords[keyword]) |
| throw new Error('Keyword ' + keyword + ' is already defined'); |
| |
| if (!IDENTIFIER.test(keyword)) |
| throw new Error('Keyword ' + keyword + ' is not a valid identifier'); |
| |
| if (definition) { |
| this.validateKeyword(definition, true); |
| |
| var dataType = definition.type; |
| if (Array.isArray(dataType)) { |
| for (var i=0; i<dataType.length; i++) |
| _addRule(keyword, dataType[i], definition); |
| } else { |
| _addRule(keyword, dataType, definition); |
| } |
| |
| var metaSchema = definition.metaSchema; |
| if (metaSchema) { |
| if (definition.$data && this._opts.$data) { |
| metaSchema = { |
| anyOf: [ |
| metaSchema, |
| { '$ref': 'https://raw.githubusercontent.com/epoberezkin/ajv/master/lib/refs/data.json#' } |
| ] |
| }; |
| } |
| definition.validateSchema = this.compile(metaSchema, true); |
| } |
| } |
| |
| RULES.keywords[keyword] = RULES.all[keyword] = true; |
| |
| |
| function _addRule(keyword, dataType, definition) { |
| var ruleGroup; |
| for (var i=0; i<RULES.length; i++) { |
| var rg = RULES[i]; |
| if (rg.type == dataType) { |
| ruleGroup = rg; |
| break; |
| } |
| } |
| |
| if (!ruleGroup) { |
| ruleGroup = { type: dataType, rules: [] }; |
| RULES.push(ruleGroup); |
| } |
| |
| var rule = { |
| keyword: keyword, |
| definition: definition, |
| custom: true, |
| code: customRuleCode, |
| implements: definition.implements |
| }; |
| ruleGroup.rules.push(rule); |
| RULES.custom[keyword] = rule; |
| } |
| |
| return this; |
| } |
| |
| |
| /** |
| * Get keyword |
| * @this Ajv |
| * @param {String} keyword pre-defined or custom keyword. |
| * @return {Object|Boolean} custom keyword definition, `true` if it is a predefined keyword, `false` otherwise. |
| */ |
| function getKeyword(keyword) { |
| /* jshint validthis: true */ |
| var rule = this.RULES.custom[keyword]; |
| return rule ? rule.definition : this.RULES.keywords[keyword] || false; |
| } |
| |
| |
| /** |
| * Remove keyword |
| * @this Ajv |
| * @param {String} keyword pre-defined or custom keyword. |
| * @return {Ajv} this for method chaining |
| */ |
| function removeKeyword(keyword) { |
| /* jshint validthis: true */ |
| var RULES = this.RULES; |
| delete RULES.keywords[keyword]; |
| delete RULES.all[keyword]; |
| delete RULES.custom[keyword]; |
| for (var i=0; i<RULES.length; i++) { |
| var rules = RULES[i].rules; |
| for (var j=0; j<rules.length; j++) { |
| if (rules[j].keyword == keyword) { |
| rules.splice(j, 1); |
| break; |
| } |
| } |
| } |
| return this; |
| } |
| |
| |
| /** |
| * Validate keyword definition |
| * @this Ajv |
| * @param {Object} definition keyword definition object. |
| * @param {Boolean} throwError true to throw exception if definition is invalid |
| * @return {boolean} validation result |
| */ |
| function validateKeyword(definition, throwError) { |
| validateKeyword.errors = null; |
| var v = this._validateKeyword = this._validateKeyword |
| || this.compile(definitionSchema, true); |
| |
| if (v(definition)) return true; |
| validateKeyword.errors = v.errors; |
| if (throwError) |
| throw new Error('custom keyword definition is invalid: ' + this.errorsText(v.errors)); |
| else |
| return false; |
| } |