2019-01-17 18:22:05 +00:00
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'use strict';
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var IDENTIFIER = /^[a-z_$][a-z0-9_$-]*$/i;
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var customRuleCode = require('./dotjs/custom');
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module.exports = {
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add: addKeyword,
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get: getKeyword,
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remove: removeKeyword
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};
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/**
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* Define custom keyword
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* @this Ajv
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* @param {String} keyword custom keyword, should be unique (including different from all standard, custom and macro keywords).
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* @param {Object} definition keyword definition object with properties `type` (type(s) which the keyword applies to), `validate` or `compile`.
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* @return {Ajv} this for method chaining
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*/
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function addKeyword(keyword, definition) {
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/* jshint validthis: true */
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/* eslint no-shadow: 0 */
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var RULES = this.RULES;
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if (RULES.keywords[keyword])
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throw new Error('Keyword ' + keyword + ' is already defined');
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if (!IDENTIFIER.test(keyword))
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throw new Error('Keyword ' + keyword + ' is not a valid identifier');
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if (definition) {
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if (definition.macro && definition.valid !== undefined)
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throw new Error('"valid" option cannot be used with macro keywords');
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var dataType = definition.type;
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if (Array.isArray(dataType)) {
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var i, len = dataType.length;
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for (i=0; i<len; i++) checkDataType(dataType[i]);
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for (i=0; i<len; i++) _addRule(keyword, dataType[i], definition);
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} else {
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if (dataType) checkDataType(dataType);
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_addRule(keyword, dataType, definition);
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}
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var $data = definition.$data === true && this._opts.$data;
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if ($data && !definition.validate)
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throw new Error('$data support: "validate" function is not defined');
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var metaSchema = definition.metaSchema;
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if (metaSchema) {
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if ($data) {
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metaSchema = {
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anyOf: [
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metaSchema,
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2019-03-08 00:15:47 +00:00
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{ '$ref': 'https://raw.githubusercontent.com/epoberezkin/ajv/master/lib/refs/data.json#' }
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2019-01-17 18:22:05 +00:00
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]
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};
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}
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definition.validateSchema = this.compile(metaSchema, true);
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}
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}
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RULES.keywords[keyword] = RULES.all[keyword] = true;
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function _addRule(keyword, dataType, definition) {
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var ruleGroup;
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for (var i=0; i<RULES.length; i++) {
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var rg = RULES[i];
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if (rg.type == dataType) {
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ruleGroup = rg;
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break;
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}
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}
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if (!ruleGroup) {
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ruleGroup = { type: dataType, rules: [] };
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RULES.push(ruleGroup);
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}
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var rule = {
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keyword: keyword,
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definition: definition,
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custom: true,
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code: customRuleCode,
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implements: definition.implements
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};
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ruleGroup.rules.push(rule);
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RULES.custom[keyword] = rule;
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}
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function checkDataType(dataType) {
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if (!RULES.types[dataType]) throw new Error('Unknown type ' + dataType);
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}
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return this;
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}
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/**
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* Get keyword
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* @this Ajv
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* @param {String} keyword pre-defined or custom keyword.
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* @return {Object|Boolean} custom keyword definition, `true` if it is a predefined keyword, `false` otherwise.
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*/
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function getKeyword(keyword) {
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/* jshint validthis: true */
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var rule = this.RULES.custom[keyword];
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return rule ? rule.definition : this.RULES.keywords[keyword] || false;
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}
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/**
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* Remove keyword
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* @this Ajv
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* @param {String} keyword pre-defined or custom keyword.
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* @return {Ajv} this for method chaining
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*/
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function removeKeyword(keyword) {
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/* jshint validthis: true */
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var RULES = this.RULES;
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delete RULES.keywords[keyword];
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delete RULES.all[keyword];
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delete RULES.custom[keyword];
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for (var i=0; i<RULES.length; i++) {
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var rules = RULES[i].rules;
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for (var j=0; j<rules.length; j++) {
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if (rules[j].keyword == keyword) {
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rules.splice(j, 1);
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break;
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}
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}
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}
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return this;
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}
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