/
attribute.js
823 lines (781 loc) · 24 KB
/
attribute.js
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'use strict';
var helpers = require('./helpers');
/** @type ValidatorResult */
var ValidatorResult = helpers.ValidatorResult;
/** @type SchemaError */
var SchemaError = helpers.SchemaError;
var attribute = {};
attribute.ignoreProperties = {
// informative properties
'id': true,
'default': true,
'description': true,
'title': true,
// arguments to other properties
'exclusiveMinimum': true,
'exclusiveMaximum': true,
'additionalItems': true,
// special-handled properties
'$schema': true,
'$ref': true,
'extends': true
};
/**
* @name validators
*/
var validators = attribute.validators = {};
/**
* Validates whether the instance if of a certain type
* @param instance
* @param schema
* @param options
* @param ctx
* @return {ValidatorResult|null}
*/
validators.type = function validateType (instance, schema, options, ctx) {
// Ignore undefined instances
if (instance === undefined) {
return null;
}
var result = new ValidatorResult(instance, schema, options, ctx);
var types = Array.isArray(schema.type) ? schema.type : [schema.type];
if (!types.some(this.testType.bind(this, instance, schema, options, ctx))) {
var list = types.map(function (v) {
return v.id && ('<' + v.id + '>') || (v+'');
});
result.addError({
name: 'type',
argument: list,
message: "is not of a type(s) " + list,
});
}
return result;
};
function testSchema(instance, options, ctx, callback, schema){
var res = this.validateSchema(instance, schema, options, ctx);
if (! res.valid && callback instanceof Function) {
callback(res);
}
return res.valid;
}
/**
* Validates whether the instance matches some of the given schemas
* @param instance
* @param schema
* @param options
* @param ctx
* @return {ValidatorResult|null}
*/
validators.anyOf = function validateAnyOf (instance, schema, options, ctx) {
// Ignore undefined instances
if (instance === undefined) {
return null;
}
var result = new ValidatorResult(instance, schema, options, ctx);
var inner = new ValidatorResult(instance, schema, options, ctx);
if (!Array.isArray(schema.anyOf)){
throw new SchemaError("anyOf must be an array");
}
if (!schema.anyOf.some(
testSchema.bind(
this, instance, options, ctx, function(res){inner.importErrors(res);}
))) {
var list = schema.anyOf.map(function (v, i) {
return (v.id && ('<' + v.id + '>')) || (v.title && JSON.stringify(v.title)) || (v['$ref'] && ('<' + v['$ref'] + '>')) || '[subschema '+i+']';
});
if (options.nestedErrors) {
result.importErrors(inner);
}
result.addError({
name: 'anyOf',
argument: list,
message: "is not any of " + list.join(','),
});
}
return result;
};
/**
* Validates whether the instance matches every given schema
* @param instance
* @param schema
* @param options
* @param ctx
* @return {String|null}
*/
validators.allOf = function validateAllOf (instance, schema, options, ctx) {
// Ignore undefined instances
if (instance === undefined) {
return null;
}
if (!Array.isArray(schema.allOf)){
throw new SchemaError("allOf must be an array");
}
var result = new ValidatorResult(instance, schema, options, ctx);
var self = this;
schema.allOf.forEach(function(v, i){
var valid = self.validateSchema(instance, v, options, ctx);
if(!valid.valid){
var msg = (v.id && ('<' + v.id + '>')) || (v.title && JSON.stringify(v.title)) || (v['$ref'] && ('<' + v['$ref'] + '>')) || '[subschema '+i+']';
result.addError({
name: 'allOf',
argument: { id: msg, length: valid.errors.length, valid: valid },
message: 'does not match allOf schema ' + msg + ' with ' + valid.errors.length + ' error[s]:',
});
result.importErrors(valid);
}
});
return result;
};
/**
* Validates whether the instance matches exactly one of the given schemas
* @param instance
* @param schema
* @param options
* @param ctx
* @return {String|null}
*/
validators.oneOf = function validateOneOf (instance, schema, options, ctx) {
// Ignore undefined instances
if (instance === undefined) {
return null;
}
if (!Array.isArray(schema.oneOf)){
throw new SchemaError("oneOf must be an array");
}
var result = new ValidatorResult(instance, schema, options, ctx);
var inner = new ValidatorResult(instance, schema, options, ctx);
var count = schema.oneOf.filter(
testSchema.bind(
this, instance, options, ctx, function(res) {inner.importErrors(res);}
) ).length;
var list = schema.oneOf.map(function (v, i) {
return (v.id && ('<' + v.id + '>')) || (v.title && JSON.stringify(v.title)) || (v['$ref'] && ('<' + v['$ref'] + '>')) || '[subschema '+i+']';
});
if (count!==1) {
if (options.nestedErrors) {
result.importErrors(inner);
}
result.addError({
name: 'oneOf',
argument: list,
message: "is not exactly one from " + list.join(','),
});
}
return result;
};
/**
* Validates properties
* @param instance
* @param schema
* @param options
* @param ctx
* @return {String|null|ValidatorResult}
*/
validators.properties = function validateProperties (instance, schema, options, ctx) {
if(instance === undefined || !(instance instanceof Object)) return;
var result = new ValidatorResult(instance, schema, options, ctx);
var properties = schema.properties || {};
for (var property in properties) {
var prop = (instance || undefined) && instance[property];
var res = this.validateSchema(prop, properties[property], options, ctx.makeChild(properties[property], property));
if(res.instance !== result.instance[property]) result.instance[property] = res.instance;
result.importErrors(res);
}
return result;
};
/**
* Test a specific property within in instance against the additionalProperties schema attribute
* This ignores properties with definitions in the properties schema attribute, but no other attributes.
* If too many more types of property-existance tests pop up they may need their own class of tests (like `type` has)
* @private
* @return {boolean}
*/
function testAdditionalProperty (instance, schema, options, ctx, property, result) {
if (schema.properties && schema.properties[property] !== undefined) {
return;
}
if (schema.additionalProperties === false) {
result.addError({
name: 'additionalProperties',
argument: property,
message: "additionalProperty " + JSON.stringify(property) + " exists in instance when not allowed",
});
} else {
var additionalProperties = schema.additionalProperties || {};
var res = this.validateSchema(instance[property], additionalProperties, options, ctx.makeChild(additionalProperties, property));
if(res.instance !== result.instance[property]) result.instance[property] = res.instance;
result.importErrors(res);
}
}
/**
* Validates patternProperties
* @param instance
* @param schema
* @param options
* @param ctx
* @return {String|null|ValidatorResult}
*/
validators.patternProperties = function validatePatternProperties (instance, schema, options, ctx) {
if(instance === undefined) return;
if(!this.types.object(instance)) return;
var result = new ValidatorResult(instance, schema, options, ctx);
var patternProperties = schema.patternProperties || {};
for (var property in instance) {
var test = true;
for (var pattern in patternProperties) {
var expr = new RegExp(pattern);
if (!expr.test(property)) {
continue;
}
test = false;
var res = this.validateSchema(instance[property], patternProperties[pattern], options, ctx.makeChild(patternProperties[pattern], property));
if(res.instance !== result.instance[property]) result.instance[property] = res.instance;
result.importErrors(res);
}
if (test) {
testAdditionalProperty.call(this, instance, schema, options, ctx, property, result);
}
}
return result;
};
/**
* Validates additionalProperties
* @param instance
* @param schema
* @param options
* @param ctx
* @return {String|null|ValidatorResult}
*/
validators.additionalProperties = function validateAdditionalProperties (instance, schema, options, ctx) {
if(instance === undefined) return;
if(!this.types.object(instance)) return;
// if patternProperties is defined then we'll test when that one is called instead
if (schema.patternProperties) {
return null;
}
var result = new ValidatorResult(instance, schema, options, ctx);
for (var property in instance) {
testAdditionalProperty.call(this, instance, schema, options, ctx, property, result);
}
return result;
};
/**
* Validates whether the instance value is at least of a certain length, when the instance value is a string.
* @param instance
* @param schema
* @return {String|null}
*/
validators.minProperties = function validateMinProperties (instance, schema, options, ctx) {
if (!instance || typeof instance !== 'object') {
return null;
}
var result = new ValidatorResult(instance, schema, options, ctx);
var keys = Object.keys(instance);
if (!(keys.length >= schema.minProperties)) {
result.addError({
name: 'minProperties',
argument: schema.minProperties,
message: "does not meet minimum property length of " + schema.minProperties,
})
}
return result;
};
/**
* Validates whether the instance value is at most of a certain length, when the instance value is a string.
* @param instance
* @param schema
* @return {String|null}
*/
validators.maxProperties = function validateMaxProperties (instance, schema, options, ctx) {
if (!instance || typeof instance !== 'object') {
return null;
}
var result = new ValidatorResult(instance, schema, options, ctx);
var keys = Object.keys(instance);
if (!(keys.length <= schema.maxProperties)) {
result.addError({
name: 'maxProperties',
argument: schema.maxProperties,
message: "does not meet maximum property length of " + schema.maxProperties,
});
}
return result;
};
/**
* Validates items when instance is an array
* @param instance
* @param schema
* @param options
* @param ctx
* @return {String|null|ValidatorResult}
*/
validators.items = function validateItems (instance, schema, options, ctx) {
if (!Array.isArray(instance)) {
return null;
}
var self = this;
var result = new ValidatorResult(instance, schema, options, ctx);
if (instance === undefined || !schema.items) {
return result;
}
instance.every(function (value, i) {
var items = Array.isArray(schema.items) ? (schema.items[i] || schema.additionalItems) : schema.items;
if (items === undefined) {
return true;
}
if (items === false) {
result.addError({
name: 'items',
message: "additionalItems not permitted",
});
return false;
}
var res = self.validateSchema(value, items, options, ctx.makeChild(items, i));
if(res.instance !== result.instance[i]) result.instance[i] = res.instance;
result.importErrors(res);
return true;
});
return result;
};
/**
* Validates minimum and exclusiveMinimum when the type of the instance value is a number.
* @param instance
* @param schema
* @return {String|null}
*/
validators.minimum = function validateMinimum (instance, schema, options, ctx) {
if (typeof instance !== 'number') {
return null;
}
var result = new ValidatorResult(instance, schema, options, ctx);
var valid = true;
if (schema.exclusiveMinimum && schema.exclusiveMinimum === true) {
valid = instance > schema.minimum;
} else {
valid = instance >= schema.minimum;
}
if (!valid) {
result.addError({
name: 'minimum',
argument: schema.minimum,
message: "must have a minimum value of " + schema.minimum,
});
}
return result;
};
/**
* Validates maximum and exclusiveMaximum when the type of the instance value is a number.
* @param instance
* @param schema
* @return {String|null}
*/
validators.maximum = function validateMaximum (instance, schema, options, ctx) {
if (typeof instance !== 'number') {
return null;
}
var result = new ValidatorResult(instance, schema, options, ctx);
var valid;
if (schema.exclusiveMaximum && schema.exclusiveMaximum === true) {
valid = instance < schema.maximum;
} else {
valid = instance <= schema.maximum;
}
if (!valid) {
result.addError({
name: 'maximum',
argument: schema.maximum,
message: "must have a maximum value of " + schema.maximum,
});
}
return result;
};
/**
* Validates divisibleBy when the type of the instance value is a number.
* Of course, this is susceptible to floating point error since it compares the floating points
* and not the JSON byte sequences to arbitrary precision.
* @param instance
* @param schema
* @return {String|null}
*/
validators.divisibleBy = function validateDivisibleBy (instance, schema, options, ctx) {
if (typeof instance !== 'number') {
return null;
}
if (schema.divisibleBy == 0) {
throw new SchemaError("divisibleBy cannot be zero");
}
var result = new ValidatorResult(instance, schema, options, ctx);
if (instance / schema.divisibleBy % 1) {
result.addError({
name: 'divisibleBy',
argument: schema.divisibleBy,
message: "is not divisible by (multiple of) " + JSON.stringify(schema.divisibleBy),
});
}
return result;
};
/**
* Validates divisibleBy when the type of the instance value is a number.
* Of course, this is susceptible to floating point error since it compares the floating points
* and not the JSON byte sequences to arbitrary precision.
* @param instance
* @param schema
* @return {String|null}
*/
validators.multipleOf = function validateMultipleOf (instance, schema, options, ctx) {
if (typeof instance !== 'number') {
return null;
}
if (schema.multipleOf == 0) {
throw new SchemaError("multipleOf cannot be zero");
}
var result = new ValidatorResult(instance, schema, options, ctx);
if (instance / schema.multipleOf % 1) {
result.addError({
name: 'multipleOf',
argument: schema.multipleOf,
message: "is not a multiple of (divisible by) " + JSON.stringify(schema.multipleOf),
});
}
return result;
};
/**
* Validates whether the instance value is present.
* @param instance
* @param schema
* @return {String|null}
*/
validators.required = function validateRequired (instance, schema, options, ctx) {
var result = new ValidatorResult(instance, schema, options, ctx);
if (instance === undefined && schema.required === true) {
// A boolean form is implemented for reverse-compatability with schemas written against older drafts
result.addError({
name: 'required',
message: "is required"
});
} else if (instance && typeof instance==='object' && Array.isArray(schema.required)) {
schema.required.forEach(function(n){
if(instance[n]===undefined){
result.addError({
name: 'required',
argument: n,
message: "requires property " + JSON.stringify(n),
});
}
});
}
return result;
};
/**
* Validates whether the instance value matches the regular expression, when the instance value is a string.
* @param instance
* @param schema
* @return {String|null}
*/
validators.pattern = function validatePattern (instance, schema, options, ctx) {
if (typeof instance !== 'string') {
return null;
}
var result = new ValidatorResult(instance, schema, options, ctx);
if (!instance.match(schema.pattern)) {
result.addError({
name: 'pattern',
argument: schema.pattern,
message: "does not match pattern " + JSON.stringify(schema.pattern),
});
}
return result;
};
/**
* Validates whether the instance value is of a certain defined format or a custom
* format.
* The following formats are supported for string types:
* - date-time
* - date
* - time
* - ip-address
* - ipv6
* - uri
* - color
* - host-name
* - alpha
* - alpha-numeric
* - utc-millisec
* @param instance
* @param schema
* @param [options]
* @param [ctx]
* @return {String|null}
*/
validators.format = function validateFormat (instance, schema, options, ctx) {
var result = new ValidatorResult(instance, schema, options, ctx);
if (!result.disableFormat && !helpers.isFormat(instance, schema.format, this)) {
result.addError({
name: 'format',
argument: schema.format,
message: "does not conform to the " + JSON.stringify(schema.format) + " format",
});
}
return result;
};
/**
* Validates whether the instance value is at least of a certain length, when the instance value is a string.
* @param instance
* @param schema
* @return {String|null}
*/
validators.minLength = function validateMinLength (instance, schema, options, ctx) {
if (!(typeof instance === 'string')) {
return null;
}
var result = new ValidatorResult(instance, schema, options, ctx);
if (!(instance.length >= schema.minLength)) {
result.addError({
name: 'minLength',
argument: schema.minLength,
message: "does not meet minimum length of " + schema.minLength,
});
}
return result;
};
/**
* Validates whether the instance value is at most of a certain length, when the instance value is a string.
* @param instance
* @param schema
* @return {String|null}
*/
validators.maxLength = function validateMaxLength (instance, schema, options, ctx) {
if (!(typeof instance === 'string')) {
return null;
}
var result = new ValidatorResult(instance, schema, options, ctx);
if (!(instance.length <= schema.maxLength)) {
result.addError({
name: 'maxLength',
argument: schema.maxLength,
message: "does not meet maximum length of " + schema.maxLength,
});
}
return result;
};
/**
* Validates whether instance contains at least a minimum number of items, when the instance is an Array.
* @param instance
* @param schema
* @return {String|null}
*/
validators.minItems = function validateMinItems (instance, schema, options, ctx) {
if (!Array.isArray(instance)) {
return null;
}
var result = new ValidatorResult(instance, schema, options, ctx);
if (!(instance.length >= schema.minItems)) {
result.addError({
name: 'minItems',
argument: schema.minItems,
message: "does not meet minimum length of " + schema.minItems,
});
}
return result;
};
/**
* Validates whether instance contains no more than a maximum number of items, when the instance is an Array.
* @param instance
* @param schema
* @return {String|null}
*/
validators.maxItems = function validateMaxItems (instance, schema, options, ctx) {
if (!Array.isArray(instance)) {
return null;
}
var result = new ValidatorResult(instance, schema, options, ctx);
if (!(instance.length <= schema.maxItems)) {
result.addError({
name: 'maxItems',
argument: schema.maxItems,
message: "does not meet maximum length of " + schema.maxItems,
});
}
return result;
};
/**
* Validates that every item in an instance array is unique, when instance is an array
* @param instance
* @param schema
* @param options
* @param ctx
* @return {String|null|ValidatorResult}
*/
validators.uniqueItems = function validateUniqueItems (instance, schema, options, ctx) {
var result = new ValidatorResult(instance, schema, options, ctx);
if (!Array.isArray(instance)) {
return result;
}
function testArrays (v, i, a) {
for (var j = i + 1; j < a.length; j++) if (helpers.deepCompareStrict(v, a[j])) {
return false;
}
return true;
}
if (!instance.every(testArrays)) {
result.addError({
name: 'uniqueItems',
message: "contains duplicate item",
});
}
return result;
};
/**
* Deep compares arrays for duplicates
* @param v
* @param i
* @param a
* @private
* @return {boolean}
*/
function testArrays (v, i, a) {
var j, len = a.length;
for (j = i + 1, len; j < len; j++) {
if (helpers.deepCompareStrict(v, a[j])) {
return false;
}
}
return true;
}
/**
* Validates whether there are no duplicates, when the instance is an Array.
* @param instance
* @return {String|null}
*/
validators.uniqueItems = function validateUniqueItems (instance, schema, options, ctx) {
if (!Array.isArray(instance)) {
return null;
}
var result = new ValidatorResult(instance, schema, options, ctx);
if (!instance.every(testArrays)) {
result.addError({
name: 'uniqueItems',
message: "contains duplicate item",
});
}
return result;
};
/**
* Validate for the presence of dependency properties, if the instance is an object.
* @param instance
* @param schema
* @param options
* @param ctx
* @return {null|ValidatorResult}
*/
validators.dependencies = function validateDependencies (instance, schema, options, ctx) {
if (!instance || typeof instance != 'object') {
return null;
}
var result = new ValidatorResult(instance, schema, options, ctx);
for (var property in schema.dependencies) {
if (instance[property] === undefined) {
continue;
}
var dep = schema.dependencies[property];
var childContext = ctx.makeChild(dep, property);
if (typeof dep == 'string') {
dep = [dep];
}
if (Array.isArray(dep)) {
dep.forEach(function (prop) {
if (instance[prop] === undefined) {
result.addError({
// FIXME there's two different "dependencies" errors here with slightly different outputs
// Can we make these the same? Or should we create different error types?
name: 'dependencies',
argument: childContext.propertyPath,
message: "property " + prop + " not found, required by " + childContext.propertyPath,
});
}
});
} else {
var res = this.validateSchema(instance, dep, options, childContext);
if(result.instance !== res.instance) result.instance = res.instance;
if (res && res.errors.length) {
result.addError({
name: 'dependencies',
argument: childContext.propertyPath,
message: "does not meet dependency required by " + childContext.propertyPath,
});
result.importErrors(res);
}
}
}
return result;
};
/**
* Validates whether the instance value is one of the enumerated values.
*
* @param instance
* @param schema
* @return {ValidatorResult|null}
*/
validators['enum'] = function validateEnum (instance, schema, options, ctx) {
if (!Array.isArray(schema['enum'])) {
throw new SchemaError("enum expects an array", schema);
}
if (instance === undefined) {
return null;
}
var result = new ValidatorResult(instance, schema, options, ctx);
if (!schema['enum'].some(helpers.deepCompareStrict.bind(null, instance))) {
result.addError({
name: 'enum',
argument: schema['enum'],
message: "is not one of enum values: " + schema['enum'].join(','),
});
}
return result;
};
/**
* Validates whether the instance exactly matches a given value
*
* @param instance
* @param schema
* @return {ValidatorResult|null}
*/
validators['const'] = function validateEnum (instance, schema, options, ctx) {
var result = new ValidatorResult(instance, schema, options, ctx);
if (!helpers.deepCompareStrict(schema['const'], instance)) {
result.addError({
name: 'const',
argument: schema['const'],
message: "does not exactly match expected constant: " + schema['const'],
});
}
return result;
};
/**
* Validates whether the instance if of a prohibited type.
* @param instance
* @param schema
* @param options
* @param ctx
* @return {null|ValidatorResult}
*/
validators.not = validators.disallow = function validateNot (instance, schema, options, ctx) {
var self = this;
if(instance===undefined) return null;
var result = new ValidatorResult(instance, schema, options, ctx);
var notTypes = schema.not || schema.disallow;
if(!notTypes) return null;
if(!Array.isArray(notTypes)) notTypes=[notTypes];
notTypes.forEach(function (type) {
if (self.testType(instance, schema, options, ctx, type)) {
var schemaId = type && type.id && ('<' + type.id + '>') || type;
result.addError({
name: 'not',
argument: schemaId,
message: "is of prohibited type " + schemaId,
});
}
});
return result;
};
module.exports = attribute;