Merge pull request #345 from toasted-nutbread/json-schema-improvements
JSON schema improvements
This commit is contained in:
toasted-nutbread
GitHub
commit
4e2b317d54
@ -64,7 +64,7 @@ class JsonSchemaProxyHandler {
|
||||
}
|
||||
}
|
||||
|
||||
const propertySchema = JsonSchemaProxyHandler.getPropertySchema(this._schema, property);
|
||||
const propertySchema = JsonSchemaProxyHandler.getPropertySchema(this._schema, property, target);
|
||||
if (propertySchema === null) {
|
||||
return;
|
||||
}
|
||||
@ -86,17 +86,14 @@ class JsonSchemaProxyHandler {
|
||||
}
|
||||
}
|
||||
|
||||
const propertySchema = JsonSchemaProxyHandler.getPropertySchema(this._schema, property);
|
||||
const propertySchema = JsonSchemaProxyHandler.getPropertySchema(this._schema, property, target);
|
||||
if (propertySchema === null) {
|
||||
throw new Error(`Property ${property} not supported`);
|
||||
}
|
||||
|
||||
value = JsonSchema.isolate(value);
|
||||
|
||||
const error = JsonSchemaProxyHandler.validate(value, propertySchema);
|
||||
if (error !== null) {
|
||||
throw new Error(`Invalid value: ${error}`);
|
||||
}
|
||||
JsonSchemaProxyHandler.validate(value, propertySchema, new JsonSchemaTraversalInfo(value, propertySchema));
|
||||
|
||||
target[property] = value;
|
||||
return true;
|
||||
@ -122,151 +119,329 @@ class JsonSchemaProxyHandler {
|
||||
throw new Error('construct not supported');
|
||||
}
|
||||
|
||||
static getPropertySchema(schema, property) {
|
||||
const type = schema.type;
|
||||
if (Array.isArray(type)) {
|
||||
throw new Error(`Ambiguous property type for ${property}`);
|
||||
}
|
||||
static getPropertySchema(schema, property, value, path=null) {
|
||||
const type = JsonSchemaProxyHandler.getSchemaOrValueType(schema, value);
|
||||
switch (type) {
|
||||
case 'object':
|
||||
{
|
||||
const properties = schema.properties;
|
||||
if (properties !== null && typeof properties === 'object' && !Array.isArray(properties)) {
|
||||
if (Object.prototype.hasOwnProperty.call(properties, property)) {
|
||||
return properties[property];
|
||||
if (JsonSchemaProxyHandler.isObject(properties)) {
|
||||
const propertySchema = properties[property];
|
||||
if (JsonSchemaProxyHandler.isObject(propertySchema)) {
|
||||
if (path !== null) { path.push(['properties', properties], [property, propertySchema]); }
|
||||
return propertySchema;
|
||||
}
|
||||
}
|
||||
|
||||
const additionalProperties = schema.additionalProperties;
|
||||
return (additionalProperties !== null && typeof additionalProperties === 'object' && !Array.isArray(additionalProperties)) ? additionalProperties : null;
|
||||
if (additionalProperties === false) {
|
||||
return null;
|
||||
} else if (JsonSchemaProxyHandler.isObject(additionalProperties)) {
|
||||
if (path !== null) { path.push(['additionalProperties', additionalProperties]); }
|
||||
return additionalProperties;
|
||||
} else {
|
||||
const result = JsonSchemaProxyHandler._unconstrainedSchema;
|
||||
if (path !== null) { path.push([null, result]); }
|
||||
return result;
|
||||
}
|
||||
}
|
||||
case 'array':
|
||||
{
|
||||
const items = schema.items;
|
||||
return (items !== null && typeof items === 'object' && !Array.isArray(items)) ? items : null;
|
||||
if (JsonSchemaProxyHandler.isObject(items)) {
|
||||
return items;
|
||||
}
|
||||
if (Array.isArray(items)) {
|
||||
if (property >= 0 && property < items.length) {
|
||||
const propertySchema = items[property];
|
||||
if (JsonSchemaProxyHandler.isObject(propertySchema)) {
|
||||
if (path !== null) { path.push(['items', items], [property, propertySchema]); }
|
||||
return propertySchema;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
const additionalItems = schema.additionalItems;
|
||||
if (additionalItems === false) {
|
||||
return null;
|
||||
} else if (JsonSchemaProxyHandler.isObject(additionalItems)) {
|
||||
if (path !== null) { path.push(['additionalItems', additionalItems]); }
|
||||
return additionalItems;
|
||||
} else {
|
||||
const result = JsonSchemaProxyHandler._unconstrainedSchema;
|
||||
if (path !== null) { path.push([null, result]); }
|
||||
return result;
|
||||
}
|
||||
}
|
||||
default:
|
||||
return null;
|
||||
}
|
||||
}
|
||||
|
||||
static validate(value, schema) {
|
||||
static getSchemaOrValueType(schema, value) {
|
||||
const type = schema.type;
|
||||
|
||||
if (Array.isArray(type)) {
|
||||
if (typeof value !== 'undefined') {
|
||||
const valueType = JsonSchemaProxyHandler.getValueType(value);
|
||||
if (type.indexOf(valueType) >= 0) {
|
||||
return valueType;
|
||||
}
|
||||
}
|
||||
return null;
|
||||
}
|
||||
|
||||
if (typeof type === 'undefined') {
|
||||
if (typeof value !== 'undefined') {
|
||||
return JsonSchemaProxyHandler.getValueType(value);
|
||||
}
|
||||
return null;
|
||||
}
|
||||
|
||||
return type;
|
||||
}
|
||||
|
||||
static validate(value, schema, info) {
|
||||
JsonSchemaProxyHandler.validateSingleSchema(value, schema, info);
|
||||
JsonSchemaProxyHandler.validateConditional(value, schema, info);
|
||||
JsonSchemaProxyHandler.validateAllOf(value, schema, info);
|
||||
JsonSchemaProxyHandler.validateAnyOf(value, schema, info);
|
||||
JsonSchemaProxyHandler.validateOneOf(value, schema, info);
|
||||
JsonSchemaProxyHandler.validateNoneOf(value, schema, info);
|
||||
}
|
||||
|
||||
static validateConditional(value, schema, info) {
|
||||
const ifSchema = schema.if;
|
||||
if (!JsonSchemaProxyHandler.isObject(ifSchema)) { return; }
|
||||
|
||||
let okay = true;
|
||||
info.schemaPush('if', ifSchema);
|
||||
try {
|
||||
JsonSchemaProxyHandler.validate(value, ifSchema, info);
|
||||
} catch (e) {
|
||||
okay = false;
|
||||
}
|
||||
info.schemaPop();
|
||||
|
||||
const nextSchema = okay ? schema.then : schema.else;
|
||||
if (JsonSchemaProxyHandler.isObject(nextSchema)) {
|
||||
info.schemaPush(okay ? 'then' : 'else', nextSchema);
|
||||
JsonSchemaProxyHandler.validate(value, nextSchema, info);
|
||||
info.schemaPop();
|
||||
}
|
||||
}
|
||||
|
||||
static validateAllOf(value, schema, info) {
|
||||
const subSchemas = schema.allOf;
|
||||
if (!Array.isArray(subSchemas)) { return; }
|
||||
|
||||
info.schemaPush('allOf', subSchemas);
|
||||
for (let i = 0; i < subSchemas.length; ++i) {
|
||||
const subSchema = subSchemas[i];
|
||||
info.schemaPush(i, subSchema);
|
||||
JsonSchemaProxyHandler.validate(value, subSchema, info);
|
||||
info.schemaPop();
|
||||
}
|
||||
info.schemaPop();
|
||||
}
|
||||
|
||||
static validateAnyOf(value, schema, info) {
|
||||
const subSchemas = schema.anyOf;
|
||||
if (!Array.isArray(subSchemas)) { return; }
|
||||
|
||||
info.schemaPush('anyOf', subSchemas);
|
||||
for (let i = 0; i < subSchemas.length; ++i) {
|
||||
const subSchema = subSchemas[i];
|
||||
info.schemaPush(i, subSchema);
|
||||
try {
|
||||
JsonSchemaProxyHandler.validate(value, subSchema, info);
|
||||
return;
|
||||
} catch (e) {
|
||||
// NOP
|
||||
}
|
||||
info.schemaPop();
|
||||
}
|
||||
|
||||
throw new JsonSchemaValidationError('0 anyOf schemas matched', value, schema, info);
|
||||
// info.schemaPop(); // Unreachable
|
||||
}
|
||||
|
||||
static validateOneOf(value, schema, info) {
|
||||
const subSchemas = schema.oneOf;
|
||||
if (!Array.isArray(subSchemas)) { return; }
|
||||
|
||||
info.schemaPush('oneOf', subSchemas);
|
||||
let count = 0;
|
||||
for (let i = 0; i < subSchemas.length; ++i) {
|
||||
const subSchema = subSchemas[i];
|
||||
info.schemaPush(i, subSchema);
|
||||
try {
|
||||
JsonSchemaProxyHandler.validate(value, subSchema, info);
|
||||
++count;
|
||||
} catch (e) {
|
||||
// NOP
|
||||
}
|
||||
info.schemaPop();
|
||||
}
|
||||
|
||||
if (count !== 1) {
|
||||
throw new JsonSchemaValidationError(`${count} oneOf schemas matched`, value, schema, info);
|
||||
}
|
||||
|
||||
info.schemaPop();
|
||||
}
|
||||
|
||||
static validateNoneOf(value, schema, info) {
|
||||
const subSchemas = schema.not;
|
||||
if (!Array.isArray(subSchemas)) { return; }
|
||||
|
||||
info.schemaPush('not', subSchemas);
|
||||
for (let i = 0; i < subSchemas.length; ++i) {
|
||||
const subSchema = subSchemas[i];
|
||||
info.schemaPush(i, subSchema);
|
||||
try {
|
||||
JsonSchemaProxyHandler.validate(value, subSchema, info);
|
||||
} catch (e) {
|
||||
info.schemaPop();
|
||||
continue;
|
||||
}
|
||||
throw new JsonSchemaValidationError(`not[${i}] schema matched`, value, schema, info);
|
||||
}
|
||||
info.schemaPop();
|
||||
}
|
||||
|
||||
static validateSingleSchema(value, schema, info) {
|
||||
const type = JsonSchemaProxyHandler.getValueType(value);
|
||||
const schemaType = schema.type;
|
||||
if (!JsonSchemaProxyHandler.isValueTypeAny(value, type, schemaType)) {
|
||||
return `Value type ${type} does not match schema type ${schemaType}`;
|
||||
throw new JsonSchemaValidationError(`Value type ${type} does not match schema type ${schemaType}`, value, schema, info);
|
||||
}
|
||||
|
||||
const schemaEnum = schema.enum;
|
||||
if (Array.isArray(schemaEnum) && !JsonSchemaProxyHandler.valuesAreEqualAny(value, schemaEnum)) {
|
||||
return 'Invalid enum value';
|
||||
throw new JsonSchemaValidationError('Invalid enum value', value, schema, info);
|
||||
}
|
||||
|
||||
switch (type) {
|
||||
case 'number':
|
||||
return JsonSchemaProxyHandler.validateNumber(value, schema);
|
||||
JsonSchemaProxyHandler.validateNumber(value, schema, info);
|
||||
break;
|
||||
case 'string':
|
||||
return JsonSchemaProxyHandler.validateString(value, schema);
|
||||
JsonSchemaProxyHandler.validateString(value, schema, info);
|
||||
break;
|
||||
case 'array':
|
||||
return JsonSchemaProxyHandler.validateArray(value, schema);
|
||||
JsonSchemaProxyHandler.validateArray(value, schema, info);
|
||||
break;
|
||||
case 'object':
|
||||
return JsonSchemaProxyHandler.validateObject(value, schema);
|
||||
default:
|
||||
return null;
|
||||
JsonSchemaProxyHandler.validateObject(value, schema, info);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
static validateNumber(value, schema) {
|
||||
static validateNumber(value, schema, info) {
|
||||
const multipleOf = schema.multipleOf;
|
||||
if (typeof multipleOf === 'number' && Math.floor(value / multipleOf) * multipleOf !== value) {
|
||||
return `Number is not a multiple of ${multipleOf}`;
|
||||
throw new JsonSchemaValidationError(`Number is not a multiple of ${multipleOf}`, value, schema, info);
|
||||
}
|
||||
|
||||
const minimum = schema.minimum;
|
||||
if (typeof minimum === 'number' && value < minimum) {
|
||||
return `Number is less than ${minimum}`;
|
||||
throw new JsonSchemaValidationError(`Number is less than ${minimum}`, value, schema, info);
|
||||
}
|
||||
|
||||
const exclusiveMinimum = schema.exclusiveMinimum;
|
||||
if (typeof exclusiveMinimum === 'number' && value <= exclusiveMinimum) {
|
||||
return `Number is less than or equal to ${exclusiveMinimum}`;
|
||||
throw new JsonSchemaValidationError(`Number is less than or equal to ${exclusiveMinimum}`, value, schema, info);
|
||||
}
|
||||
|
||||
const maximum = schema.maximum;
|
||||
if (typeof maximum === 'number' && value > maximum) {
|
||||
return `Number is greater than ${maximum}`;
|
||||
throw new JsonSchemaValidationError(`Number is greater than ${maximum}`, value, schema, info);
|
||||
}
|
||||
|
||||
const exclusiveMaximum = schema.exclusiveMaximum;
|
||||
if (typeof exclusiveMaximum === 'number' && value >= exclusiveMaximum) {
|
||||
return `Number is greater than or equal to ${exclusiveMaximum}`;
|
||||
throw new JsonSchemaValidationError(`Number is greater than or equal to ${exclusiveMaximum}`, value, schema, info);
|
||||
}
|
||||
}
|
||||
|
||||
return null;
|
||||
}
|
||||
|
||||
static validateString(value, schema) {
|
||||
static validateString(value, schema, info) {
|
||||
const minLength = schema.minLength;
|
||||
if (typeof minLength === 'number' && value.length < minLength) {
|
||||
return 'String length too short';
|
||||
throw new JsonSchemaValidationError('String length too short', value, schema, info);
|
||||
}
|
||||
|
||||
const maxLength = schema.minLength;
|
||||
const maxLength = schema.maxLength;
|
||||
if (typeof maxLength === 'number' && value.length > maxLength) {
|
||||
return 'String length too long';
|
||||
throw new JsonSchemaValidationError('String length too long', value, schema, info);
|
||||
}
|
||||
}
|
||||
|
||||
return null;
|
||||
}
|
||||
|
||||
static validateArray(value, schema) {
|
||||
static validateArray(value, schema, info) {
|
||||
const minItems = schema.minItems;
|
||||
if (typeof minItems === 'number' && value.length < minItems) {
|
||||
return 'Array length too short';
|
||||
throw new JsonSchemaValidationError('Array length too short', value, schema, info);
|
||||
}
|
||||
|
||||
const maxItems = schema.maxItems;
|
||||
if (typeof maxItems === 'number' && value.length > maxItems) {
|
||||
return 'Array length too long';
|
||||
throw new JsonSchemaValidationError('Array length too long', value, schema, info);
|
||||
}
|
||||
|
||||
return null;
|
||||
for (let i = 0, ii = value.length; i < ii; ++i) {
|
||||
const schemaPath = [];
|
||||
const propertySchema = JsonSchemaProxyHandler.getPropertySchema(schema, i, value, schemaPath);
|
||||
if (propertySchema === null) {
|
||||
throw new JsonSchemaValidationError(`No schema found for array[${i}]`, value, schema, info);
|
||||
}
|
||||
|
||||
static validateObject(value, schema) {
|
||||
const propertyValue = value[i];
|
||||
|
||||
for (const [p, s] of schemaPath) { info.schemaPush(p, s); }
|
||||
info.valuePush(i, propertyValue);
|
||||
JsonSchemaProxyHandler.validate(propertyValue, propertySchema, info);
|
||||
info.valuePop();
|
||||
for (let i = 0; i < schemaPath.length; ++i) { info.schemaPop(); }
|
||||
}
|
||||
}
|
||||
|
||||
static validateObject(value, schema, info) {
|
||||
const properties = new Set(Object.getOwnPropertyNames(value));
|
||||
|
||||
const required = schema.required;
|
||||
if (Array.isArray(required)) {
|
||||
for (const property of required) {
|
||||
if (!properties.has(property)) {
|
||||
return `Missing property ${property}`;
|
||||
throw new JsonSchemaValidationError(`Missing property ${property}`, value, schema, info);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
const minProperties = schema.minProperties;
|
||||
if (typeof minProperties === 'number' && properties.length < minProperties) {
|
||||
return 'Not enough object properties';
|
||||
throw new JsonSchemaValidationError('Not enough object properties', value, schema, info);
|
||||
}
|
||||
|
||||
const maxProperties = schema.maxProperties;
|
||||
if (typeof maxProperties === 'number' && properties.length > maxProperties) {
|
||||
return 'Too many object properties';
|
||||
throw new JsonSchemaValidationError('Too many object properties', value, schema, info);
|
||||
}
|
||||
|
||||
for (const property of properties) {
|
||||
const propertySchema = JsonSchemaProxyHandler.getPropertySchema(schema, property);
|
||||
const schemaPath = [];
|
||||
const propertySchema = JsonSchemaProxyHandler.getPropertySchema(schema, property, value, schemaPath);
|
||||
if (propertySchema === null) {
|
||||
return `No schema found for ${property}`;
|
||||
}
|
||||
const error = JsonSchemaProxyHandler.validate(value[property], propertySchema);
|
||||
if (error !== null) {
|
||||
return error;
|
||||
}
|
||||
throw new JsonSchemaValidationError(`No schema found for ${property}`, value, schema, info);
|
||||
}
|
||||
|
||||
return null;
|
||||
const propertyValue = value[property];
|
||||
|
||||
for (const [p, s] of schemaPath) { info.schemaPush(p, s); }
|
||||
info.valuePush(property, propertyValue);
|
||||
JsonSchemaProxyHandler.validate(propertyValue, propertySchema, info);
|
||||
info.valuePop();
|
||||
for (let i = 0; i < schemaPath.length; ++i) { info.schemaPop(); }
|
||||
}
|
||||
}
|
||||
|
||||
static isValueTypeAny(value, type, schemaTypes) {
|
||||
@ -372,14 +547,14 @@ class JsonSchemaProxyHandler {
|
||||
for (const property of required) {
|
||||
properties.delete(property);
|
||||
|
||||
const propertySchema = JsonSchemaProxyHandler.getPropertySchema(schema, property);
|
||||
const propertySchema = JsonSchemaProxyHandler.getPropertySchema(schema, property, value);
|
||||
if (propertySchema === null) { continue; }
|
||||
value[property] = JsonSchemaProxyHandler.getValidValueOrDefault(propertySchema, value[property]);
|
||||
}
|
||||
}
|
||||
|
||||
for (const property of properties) {
|
||||
const propertySchema = JsonSchemaProxyHandler.getPropertySchema(schema, property);
|
||||
const propertySchema = JsonSchemaProxyHandler.getPropertySchema(schema, property, value);
|
||||
if (propertySchema === null) {
|
||||
Reflect.deleteProperty(value, property);
|
||||
} else {
|
||||
@ -392,13 +567,53 @@ class JsonSchemaProxyHandler {
|
||||
|
||||
static populateArrayDefaults(value, schema) {
|
||||
for (let i = 0, ii = value.length; i < ii; ++i) {
|
||||
const propertySchema = JsonSchemaProxyHandler.getPropertySchema(schema, i);
|
||||
const propertySchema = JsonSchemaProxyHandler.getPropertySchema(schema, i, value);
|
||||
if (propertySchema === null) { continue; }
|
||||
value[i] = JsonSchemaProxyHandler.getValidValueOrDefault(propertySchema, value[i]);
|
||||
}
|
||||
|
||||
return value;
|
||||
}
|
||||
|
||||
static isObject(value) {
|
||||
return typeof value === 'object' && value !== null && !Array.isArray(value);
|
||||
}
|
||||
}
|
||||
|
||||
JsonSchemaProxyHandler._unconstrainedSchema = {};
|
||||
|
||||
class JsonSchemaTraversalInfo {
|
||||
constructor(value, schema) {
|
||||
this.valuePath = [];
|
||||
this.schemaPath = [];
|
||||
this.valuePush(null, value);
|
||||
this.schemaPush(null, schema);
|
||||
}
|
||||
|
||||
valuePush(path, value) {
|
||||
this.valuePath.push([path, value]);
|
||||
}
|
||||
|
||||
valuePop() {
|
||||
this.valuePath.pop();
|
||||
}
|
||||
|
||||
schemaPush(path, schema) {
|
||||
this.schemaPath.push([path, schema]);
|
||||
}
|
||||
|
||||
schemaPop() {
|
||||
this.schemaPath.pop();
|
||||
}
|
||||
}
|
||||
|
||||
class JsonSchemaValidationError extends Error {
|
||||
constructor(message, value, schema, info) {
|
||||
super(message);
|
||||
this.value = value;
|
||||
this.schema = schema;
|
||||
this.info = info;
|
||||
}
|
||||
}
|
||||
|
||||
class JsonSchema {
|
||||
@ -406,6 +621,10 @@ class JsonSchema {
|
||||
return new Proxy(target, new JsonSchemaProxyHandler(schema));
|
||||
}
|
||||
|
||||
static validate(value, schema) {
|
||||
return JsonSchemaProxyHandler.validate(value, schema, new JsonSchemaTraversalInfo(value, schema));
|
||||
}
|
||||
|
||||
static getValidValueOrDefault(schema, value) {
|
||||
return JsonSchemaProxyHandler.getValidValueOrDefault(schema, value);
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user