585 lines
16 KiB
JavaScript
585 lines
16 KiB
JavaScript
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var genobj = require('generate-object-property')
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var genfun = require('generate-function')
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var jsonpointer = require('jsonpointer')
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var xtend = require('xtend')
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var formats = require('./formats')
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var get = function(obj, additionalSchemas, ptr) {
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var visit = function(sub) {
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if (sub && sub.id === ptr) return sub
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if (typeof sub !== 'object' || !sub) return null
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return Object.keys(sub).reduce(function(res, k) {
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return res || visit(sub[k])
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}, null)
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}
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var res = visit(obj)
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if (res) return res
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ptr = ptr.replace(/^#/, '')
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ptr = ptr.replace(/\/$/, '')
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try {
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return jsonpointer.get(obj, decodeURI(ptr))
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} catch (err) {
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var end = ptr.indexOf('#')
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var other
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// external reference
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if (end !== 0) {
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// fragment doesn't exist.
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if (end === -1) {
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other = additionalSchemas[ptr]
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} else {
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var ext = ptr.slice(0, end)
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other = additionalSchemas[ext]
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var fragment = ptr.slice(end).replace(/^#/, '')
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try {
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return jsonpointer.get(other, fragment)
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} catch (err) {}
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}
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} else {
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other = additionalSchemas[ptr]
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}
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return other || null
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}
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}
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var formatName = function(field) {
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field = JSON.stringify(field)
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var pattern = /\[([^\[\]"]+)\]/
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while (pattern.test(field)) field = field.replace(pattern, '."+$1+"')
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return field
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}
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var types = {}
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types.any = function() {
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return 'true'
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}
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types.null = function(name) {
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return name+' === null'
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}
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types.boolean = function(name) {
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return 'typeof '+name+' === "boolean"'
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}
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types.array = function(name) {
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return 'Array.isArray('+name+')'
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}
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types.object = function(name) {
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return 'typeof '+name+' === "object" && '+name+' && !Array.isArray('+name+')'
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}
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types.number = function(name) {
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return 'typeof '+name+' === "number"'
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}
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types.integer = function(name) {
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return 'typeof '+name+' === "number" && (Math.floor('+name+') === '+name+' || '+name+' > 9007199254740992 || '+name+' < -9007199254740992)'
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}
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types.string = function(name) {
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return 'typeof '+name+' === "string"'
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}
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var unique = function(array) {
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var list = []
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for (var i = 0; i < array.length; i++) {
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list.push(typeof array[i] === 'object' ? JSON.stringify(array[i]) : array[i])
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}
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for (var i = 1; i < list.length; i++) {
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if (list.indexOf(list[i]) !== i) return false
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}
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return true
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}
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var isMultipleOf = function(name, multipleOf) {
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var res;
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var factor = ((multipleOf | 0) !== multipleOf) ? Math.pow(10, multipleOf.toString().split('.').pop().length) : 1
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if (factor > 1) {
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var factorName = ((name | 0) !== name) ? Math.pow(10, name.toString().split('.').pop().length) : 1
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if (factorName > factor) res = true
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else res = Math.round(factor * name) % (factor * multipleOf)
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}
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else res = name % multipleOf;
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return !res;
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}
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var toType = function(node) {
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return node.type
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}
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var compile = function(schema, cache, root, reporter, opts) {
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var fmts = opts ? xtend(formats, opts.formats) : formats
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var scope = {unique:unique, formats:fmts, isMultipleOf:isMultipleOf}
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var verbose = opts ? !!opts.verbose : false;
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var greedy = opts && opts.greedy !== undefined ?
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opts.greedy : false;
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var syms = {}
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var gensym = function(name) {
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return name+(syms[name] = (syms[name] || 0)+1)
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}
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var reversePatterns = {}
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var patterns = function(p) {
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if (reversePatterns[p]) return reversePatterns[p]
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var n = gensym('pattern')
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scope[n] = new RegExp(p)
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reversePatterns[p] = n
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return n
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}
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var vars = ['i','j','k','l','m','n','o','p','q','r','s','t','u','v','x','y','z']
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var genloop = function() {
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var v = vars.shift()
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vars.push(v+v[0])
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return v
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}
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var visit = function(name, node, reporter, filter) {
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var properties = node.properties
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var type = node.type
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var tuple = false
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if (Array.isArray(node.items)) { // tuple type
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properties = {}
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node.items.forEach(function(item, i) {
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properties[i] = item
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})
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type = 'array'
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tuple = true
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}
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var indent = 0
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var error = function(msg, prop, value) {
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validate('errors++')
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if (reporter === true) {
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validate('if (validate.errors === null) validate.errors = []')
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if (verbose) {
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validate('validate.errors.push({field:%s,message:%s,value:%s,type:%s})', formatName(prop || name), JSON.stringify(msg), value || name, JSON.stringify(type))
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} else {
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validate('validate.errors.push({field:%s,message:%s})', formatName(prop || name), JSON.stringify(msg))
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}
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}
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}
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if (node.required === true) {
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indent++
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validate('if (%s === undefined) {', name)
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error('is required')
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validate('} else {')
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} else {
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indent++
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validate('if (%s !== undefined) {', name)
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}
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var valid = [].concat(type)
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.map(function(t) {
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return types[t || 'any'](name)
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})
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.join(' || ') || 'true'
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if (valid !== 'true') {
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indent++
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validate('if (!(%s)) {', valid)
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error('is the wrong type')
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validate('} else {')
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}
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if (tuple) {
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if (node.additionalItems === false) {
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validate('if (%s.length > %d) {', name, node.items.length)
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error('has additional items')
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validate('}')
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} else if (node.additionalItems) {
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var i = genloop()
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validate('for (var %s = %d; %s < %s.length; %s++) {', i, node.items.length, i, name, i)
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visit(name+'['+i+']', node.additionalItems, reporter, filter)
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validate('}')
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}
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}
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if (node.format && fmts[node.format]) {
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if (type !== 'string' && formats[node.format]) validate('if (%s) {', types.string(name))
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var n = gensym('format')
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scope[n] = fmts[node.format]
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if (typeof scope[n] === 'function') validate('if (!%s(%s)) {', n, name)
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else validate('if (!%s.test(%s)) {', n, name)
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error('must be '+node.format+' format')
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validate('}')
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if (type !== 'string' && formats[node.format]) validate('}')
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}
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if (Array.isArray(node.required)) {
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var isUndefined = function(req) {
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return genobj(name, req) + ' === undefined'
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}
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var checkRequired = function (req) {
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var prop = genobj(name, req);
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validate('if (%s === undefined) {', prop)
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error('is required', prop)
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validate('missing++')
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validate('}')
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}
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validate('if ((%s)) {', type !== 'object' ? types.object(name) : 'true')
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validate('var missing = 0')
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node.required.map(checkRequired)
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validate('}');
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if (!greedy) {
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validate('if (missing === 0) {')
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indent++
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}
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}
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if (node.uniqueItems) {
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if (type !== 'array') validate('if (%s) {', types.array(name))
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validate('if (!(unique(%s))) {', name)
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error('must be unique')
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validate('}')
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if (type !== 'array') validate('}')
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}
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if (node.enum) {
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var complex = node.enum.some(function(e) {
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return typeof e === 'object'
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})
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var compare = complex ?
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function(e) {
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return 'JSON.stringify('+name+')'+' !== JSON.stringify('+JSON.stringify(e)+')'
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} :
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function(e) {
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return name+' !== '+JSON.stringify(e)
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}
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validate('if (%s) {', node.enum.map(compare).join(' && ') || 'false')
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error('must be an enum value')
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validate('}')
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}
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if (node.dependencies) {
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if (type !== 'object') validate('if (%s) {', types.object(name))
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Object.keys(node.dependencies).forEach(function(key) {
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var deps = node.dependencies[key]
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if (typeof deps === 'string') deps = [deps]
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var exists = function(k) {
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return genobj(name, k) + ' !== undefined'
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}
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if (Array.isArray(deps)) {
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validate('if (%s !== undefined && !(%s)) {', genobj(name, key), deps.map(exists).join(' && ') || 'true')
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error('dependencies not set')
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validate('}')
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}
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if (typeof deps === 'object') {
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validate('if (%s !== undefined) {', genobj(name, key))
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visit(name, deps, reporter, filter)
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validate('}')
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}
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})
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if (type !== 'object') validate('}')
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}
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if (node.additionalProperties || node.additionalProperties === false) {
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if (type !== 'object') validate('if (%s) {', types.object(name))
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var i = genloop()
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var keys = gensym('keys')
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var toCompare = function(p) {
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return keys+'['+i+'] !== '+JSON.stringify(p)
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}
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var toTest = function(p) {
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return '!'+patterns(p)+'.test('+keys+'['+i+'])'
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}
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var additionalProp = Object.keys(properties || {}).map(toCompare)
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.concat(Object.keys(node.patternProperties || {}).map(toTest))
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.join(' && ') || 'true'
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validate('var %s = Object.keys(%s)', keys, name)
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('for (var %s = 0; %s < %s.length; %s++) {', i, i, keys, i)
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('if (%s) {', additionalProp)
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if (node.additionalProperties === false) {
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if (filter) validate('delete %s', name+'['+keys+'['+i+']]')
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error('has additional properties', null, JSON.stringify(name+'.') + ' + ' + keys + '['+i+']')
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} else {
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visit(name+'['+keys+'['+i+']]', node.additionalProperties, reporter, filter)
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}
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validate
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('}')
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('}')
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if (type !== 'object') validate('}')
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}
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if (node.$ref) {
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var sub = get(root, opts && opts.schemas || {}, node.$ref)
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if (sub) {
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var fn = cache[node.$ref]
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if (!fn) {
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cache[node.$ref] = function proxy(data) {
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return fn(data)
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}
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fn = compile(sub, cache, root, false, opts)
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}
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var n = gensym('ref')
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scope[n] = fn
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validate('if (!(%s(%s))) {', n, name)
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error('referenced schema does not match')
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validate('}')
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}
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}
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if (node.not) {
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var prev = gensym('prev')
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validate('var %s = errors', prev)
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visit(name, node.not, false, filter)
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validate('if (%s === errors) {', prev)
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error('negative schema matches')
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validate('} else {')
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('errors = %s', prev)
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('}')
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}
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if (node.items && !tuple) {
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if (type !== 'array') validate('if (%s) {', types.array(name))
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var i = genloop()
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validate('for (var %s = 0; %s < %s.length; %s++) {', i, i, name, i)
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visit(name+'['+i+']', node.items, reporter, filter)
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validate('}')
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if (type !== 'array') validate('}')
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}
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if (node.patternProperties) {
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if (type !== 'object') validate('if (%s) {', types.object(name))
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var keys = gensym('keys')
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var i = genloop()
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validate
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('var %s = Object.keys(%s)', keys, name)
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('for (var %s = 0; %s < %s.length; %s++) {', i, i, keys, i)
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Object.keys(node.patternProperties).forEach(function(key) {
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var p = patterns(key)
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validate('if (%s.test(%s)) {', p, keys+'['+i+']')
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|
|
visit(name+'['+keys+'['+i+']]', node.patternProperties[key], reporter, filter)
|
||
|
|
validate('}')
|
||
|
|
})
|
||
|
|
|
||
|
|
validate('}')
|
||
|
|
if (type !== 'object') validate('}')
|
||
|
|
}
|
||
|
|
|
||
|
|
if (node.pattern) {
|
||
|
|
var p = patterns(node.pattern)
|
||
|
|
if (type !== 'string') validate('if (%s) {', types.string(name))
|
||
|
|
validate('if (!(%s.test(%s))) {', p, name)
|
||
|
|
error('pattern mismatch')
|
||
|
|
validate('}')
|
||
|
|
if (type !== 'string') validate('}')
|
||
|
|
}
|
||
|
|
|
||
|
|
if (node.allOf) {
|
||
|
|
node.allOf.forEach(function(sch) {
|
||
|
|
visit(name, sch, reporter, filter)
|
||
|
|
})
|
||
|
|
}
|
||
|
|
|
||
|
|
if (node.anyOf && node.anyOf.length) {
|
||
|
|
var prev = gensym('prev')
|
||
|
|
|
||
|
|
node.anyOf.forEach(function(sch, i) {
|
||
|
|
if (i === 0) {
|
||
|
|
validate('var %s = errors', prev)
|
||
|
|
} else {
|
||
|
|
validate('if (errors !== %s) {', prev)
|
||
|
|
('errors = %s', prev)
|
||
|
|
}
|
||
|
|
visit(name, sch, false, false)
|
||
|
|
})
|
||
|
|
node.anyOf.forEach(function(sch, i) {
|
||
|
|
if (i) validate('}')
|
||
|
|
})
|
||
|
|
validate('if (%s !== errors) {', prev)
|
||
|
|
error('no schemas match')
|
||
|
|
validate('}')
|
||
|
|
}
|
||
|
|
|
||
|
|
if (node.oneOf && node.oneOf.length) {
|
||
|
|
var prev = gensym('prev')
|
||
|
|
var passes = gensym('passes')
|
||
|
|
|
||
|
|
validate
|
||
|
|
('var %s = errors', prev)
|
||
|
|
('var %s = 0', passes)
|
||
|
|
|
||
|
|
node.oneOf.forEach(function(sch, i) {
|
||
|
|
visit(name, sch, false, false)
|
||
|
|
validate('if (%s === errors) {', prev)
|
||
|
|
('%s++', passes)
|
||
|
|
('} else {')
|
||
|
|
('errors = %s', prev)
|
||
|
|
('}')
|
||
|
|
})
|
||
|
|
|
||
|
|
validate('if (%s !== 1) {', passes)
|
||
|
|
error('no (or more than one) schemas match')
|
||
|
|
validate('}')
|
||
|
|
}
|
||
|
|
|
||
|
|
if (node.multipleOf !== undefined) {
|
||
|
|
if (type !== 'number' && type !== 'integer') validate('if (%s) {', types.number(name))
|
||
|
|
|
||
|
|
validate('if (!isMultipleOf(%s, %d)) {', name, node.multipleOf)
|
||
|
|
|
||
|
|
error('has a remainder')
|
||
|
|
validate('}')
|
||
|
|
|
||
|
|
if (type !== 'number' && type !== 'integer') validate('}')
|
||
|
|
}
|
||
|
|
|
||
|
|
if (node.maxProperties !== undefined) {
|
||
|
|
if (type !== 'object') validate('if (%s) {', types.object(name))
|
||
|
|
|
||
|
|
validate('if (Object.keys(%s).length > %d) {', name, node.maxProperties)
|
||
|
|
error('has more properties than allowed')
|
||
|
|
validate('}')
|
||
|
|
|
||
|
|
if (type !== 'object') validate('}')
|
||
|
|
}
|
||
|
|
|
||
|
|
if (node.minProperties !== undefined) {
|
||
|
|
if (type !== 'object') validate('if (%s) {', types.object(name))
|
||
|
|
|
||
|
|
validate('if (Object.keys(%s).length < %d) {', name, node.minProperties)
|
||
|
|
error('has less properties than allowed')
|
||
|
|
validate('}')
|
||
|
|
|
||
|
|
if (type !== 'object') validate('}')
|
||
|
|
}
|
||
|
|
|
||
|
|
if (node.maxItems !== undefined) {
|
||
|
|
if (type !== 'array') validate('if (%s) {', types.array(name))
|
||
|
|
|
||
|
|
validate('if (%s.length > %d) {', name, node.maxItems)
|
||
|
|
error('has more items than allowed')
|
||
|
|
validate('}')
|
||
|
|
|
||
|
|
if (type !== 'array') validate('}')
|
||
|
|
}
|
||
|
|
|
||
|
|
if (node.minItems !== undefined) {
|
||
|
|
if (type !== 'array') validate('if (%s) {', types.array(name))
|
||
|
|
|
||
|
|
validate('if (%s.length < %d) {', name, node.minItems)
|
||
|
|
error('has less items than allowed')
|
||
|
|
validate('}')
|
||
|
|
|
||
|
|
if (type !== 'array') validate('}')
|
||
|
|
}
|
||
|
|
|
||
|
|
if (node.maxLength !== undefined) {
|
||
|
|
if (type !== 'string') validate('if (%s) {', types.string(name))
|
||
|
|
|
||
|
|
validate('if (%s.length > %d) {', name, node.maxLength)
|
||
|
|
error('has longer length than allowed')
|
||
|
|
validate('}')
|
||
|
|
|
||
|
|
if (type !== 'string') validate('}')
|
||
|
|
}
|
||
|
|
|
||
|
|
if (node.minLength !== undefined) {
|
||
|
|
if (type !== 'string') validate('if (%s) {', types.string(name))
|
||
|
|
|
||
|
|
validate('if (%s.length < %d) {', name, node.minLength)
|
||
|
|
error('has less length than allowed')
|
||
|
|
validate('}')
|
||
|
|
|
||
|
|
if (type !== 'string') validate('}')
|
||
|
|
}
|
||
|
|
|
||
|
|
if (node.minimum !== undefined) {
|
||
|
|
validate('if (%s %s %d) {', name, node.exclusiveMinimum ? '<=' : '<', node.minimum)
|
||
|
|
error('is less than minimum')
|
||
|
|
validate('}')
|
||
|
|
}
|
||
|
|
|
||
|
|
if (node.maximum !== undefined) {
|
||
|
|
validate('if (%s %s %d) {', name, node.exclusiveMaximum ? '>=' : '>', node.maximum)
|
||
|
|
error('is more than maximum')
|
||
|
|
validate('}')
|
||
|
|
}
|
||
|
|
|
||
|
|
if (properties) {
|
||
|
|
Object.keys(properties).forEach(function(p) {
|
||
|
|
if (Array.isArray(type) && type.indexOf('null') !== -1) validate('if (%s !== null) {', name)
|
||
|
|
|
||
|
|
visit(genobj(name, p), properties[p], reporter, filter)
|
||
|
|
|
||
|
|
if (Array.isArray(type) && type.indexOf('null') !== -1) validate('}')
|
||
|
|
})
|
||
|
|
}
|
||
|
|
|
||
|
|
while (indent--) validate('}')
|
||
|
|
}
|
||
|
|
|
||
|
|
var validate = genfun
|
||
|
|
('function validate(data) {')
|
||
|
|
('validate.errors = null')
|
||
|
|
('var errors = 0')
|
||
|
|
|
||
|
|
visit('data', schema, reporter, opts && opts.filter)
|
||
|
|
|
||
|
|
validate
|
||
|
|
('return errors === 0')
|
||
|
|
('}')
|
||
|
|
|
||
|
|
validate = validate.toFunction(scope)
|
||
|
|
validate.errors = null
|
||
|
|
|
||
|
|
if (Object.defineProperty) {
|
||
|
|
Object.defineProperty(validate, 'error', {
|
||
|
|
get: function() {
|
||
|
|
if (!validate.errors) return ''
|
||
|
|
return validate.errors.map(function(err) {
|
||
|
|
return err.field + ' ' + err.message;
|
||
|
|
}).join('\n')
|
||
|
|
}
|
||
|
|
})
|
||
|
|
}
|
||
|
|
|
||
|
|
validate.toJSON = function() {
|
||
|
|
return schema
|
||
|
|
}
|
||
|
|
|
||
|
|
return validate
|
||
|
|
}
|
||
|
|
|
||
|
|
module.exports = function(schema, opts) {
|
||
|
|
if (typeof schema === 'string') schema = JSON.parse(schema)
|
||
|
|
return compile(schema, {}, schema, true, opts)
|
||
|
|
}
|
||
|
|
|
||
|
|
module.exports.filter = function(schema, opts) {
|
||
|
|
var validate = module.exports(schema, xtend(opts, {filter: true}))
|
||
|
|
return function(sch) {
|
||
|
|
validate(sch)
|
||
|
|
return sch
|
||
|
|
}
|
||
|
|
}
|