/
system-compat.ts
261 lines (223 loc) · 7.38 KB
/
system-compat.ts
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import { Type, getBaseType, getTypeFullName, getTypeNameProp, getTypeRegistry, isInstanceOfType, setTypeNameProp } from "../base";
export type Dictionary<TItem> = { [key: string]: TItem };
/** @deprecated Use ?? operator */
export function coalesce(a: any, b: any): any {
return a ?? b;
}
/** @deprecated Use a != null */
export function isValue(a: any): boolean {
return a != null;
}
export let today = (): Date => {
var d = new Date();
return new Date(d.getFullYear(), d.getMonth(), d.getDate());
}
export function extend<T = any>(a: T, b: T): T {
for (var key in b)
if (Object.prototype.hasOwnProperty.call(b, key))
a[key] = b[key];
return a;
}
export function deepClone<T = any>(a: T, a2?: any, a3?: any): T {
// for backward compatibility
if (a2 != null || a3 != null) {
return extend(extend(deepClone(a || {}), deepClone(a2 || {})), deepClone(a3 || {}));
}
// https://github.com/angus-c/just/blob/master/packages/collection-clone/index.js
var result = a;
var type = {}.toString.call(a).slice(8, -1);
if (type == 'Set') {
return new Set([...(a as any)].map(value => deepClone(value))) as any;
}
if (type == 'Map') {
return new Map([...(a as any)].map(kv => [deepClone(kv[0]), deepClone(kv[1])])) as any;
}
if (type == 'Date') {
return new Date((a as any).getTime()) as any;
}
if (type == 'RegExp') {
return RegExp((a as any).source, getRegExpFlags(a as any)) as any;
}
if (type == 'Array' || type == 'Object') {
result = (Array.isArray(a) ? [] : {}) as any;
for (var key in a) {
// include prototype properties
result[key] = deepClone(a[key]);
}
}
// primitives and non-supported objects (e.g. functions) land here
return result;
}
function getRegExpFlags(regExp: RegExp) {
if (typeof (regExp.source as any).flags == 'string') {
return (regExp.source as any).flags;
} else {
var flags = [];
regExp.global && flags.push('g');
regExp.ignoreCase && flags.push('i');
regExp.multiline && flags.push('m');
regExp.sticky && flags.push('y');
regExp.unicode && flags.push('u');
return flags.join('');
}
}
export interface TypeMember {
name: string;
type: MemberType;
attr?: any[];
getter?: string;
setter?: string;
}
export enum MemberType {
field = 4,
property = 16
}
export function getMembers(type: any, memberTypes: MemberType): TypeMember[] {
var result: TypeMember[] = [];
if (!type)
return [];
var result: TypeMember[] = [];
do {
let members = Object.prototype.hasOwnProperty.call(type, typeMemberListSymbol) ? type[typeMemberListSymbol] : null;
if (members) {
for (var member of members) {
if (member && (member.type & memberTypes) && !result.some(x => x.name === member.name))
result.push(member);
}
}
}
while ((type = getBaseType(type)))
return result;
};
function merge(arr1: any[], arr2: any[]) {
if (!arr1 || !arr2)
return (arr1 || arr2 || []).slice();
function distinct(arr: any[]) {
return arr.filter((item, pos) => arr.indexOf(item) === pos);
}
return distinct(arr1.concat(arr2));
}
const typeMemberListSymbol = "Serenity.typeMemberList";
export function addTypeMember(type: any, member: TypeMember): TypeMember {
if (!Object.prototype.hasOwnProperty.call(type, typeMemberListSymbol)) {
type[typeMemberListSymbol] = [];
}
var members = type[typeMemberListSymbol];
if (!members)
type[typeMemberListSymbol] = members = [];
var name = member.name;
let existing: TypeMember;
for (var m of members) {
if (m.name == name) {
existing = m;
break;
}
}
if (existing) {
if (member.type != null)
existing.type = member.type;
if (member.attr != null)
existing.attr = merge(existing.attr, member.attr);
if (member.getter != null)
existing.getter = member.getter;
if (member.setter != null)
existing.setter = member.setter;
return existing;
}
else {
members.push(member);
return member;
}
}
export function getTypes(from?: any): any[] {
const types = getTypeRegistry();
var result = [];
if (!from) {
for (var t in types) {
if (Object.prototype.hasOwnProperty.call(types, t))
result.push(types[t]);
}
}
else {
var traverse = function (s: any, n: string) {
for (var c in s) {
if (Object.prototype.hasOwnProperty.call(s, c))
traverse(s[c], c);
}
if (typeof (s) === 'function' &&
n.charAt(0).toUpperCase() === n.charAt(0) &&
n.charAt(0).toLowerCase() !== n.charAt(0))
result.push(s);
};
traverse(from, '');
}
return result;
};
export function clearKeys(d: any) {
for (var n in d) {
if (Object.prototype.hasOwnProperty.call(d, n))
delete d[n];
}
}
export function keyOf<T>(prop: keyof T) {
return prop;
}
export function cast(instance: any, type: Type) {
if (instance == null)
return instance;
else if (isInstanceOfType(instance, type))
return instance;
throw 'Cannot cast object to type ' + getTypeFullName(type);
}
export function safeCast(instance: any, type: Type) {
return isInstanceOfType(instance, type) ? instance : null;
};
// has to duplicate this for now
const isInterfaceTypeSymbol: unique symbol = Symbol.for("Serenity.isInterfaceType");
export function initializeTypes(root: any, pre: string, limit: number) {
if (!root)
return;
for (var k of Object.keys(root)) {
if (k.charAt(0) < 'A' ||
k.charAt(0) > 'Z' ||
k.indexOf('$') >= 0 ||
!Object.prototype.hasOwnProperty.call(root, k))
continue;
var obj = root[k];
if (obj == void 0 ||
Array.isArray(obj) ||
obj instanceof Date ||
(typeof obj != "function" && typeof obj != "object"))
continue;
// no explicit typeName, e.g. not registered with a name,
// a function but not an html element, or registered without name
if (!getTypeNameProp(obj) &&
(obj as any)[isInterfaceTypeSymbol] !== void 0 &&
((typeof obj === "function" && typeof obj.nodeType !== "number") ||
(Object.prototype.hasOwnProperty.call(obj, isInterfaceTypeSymbol) &&
(obj as any)[isInterfaceTypeSymbol] !== undefined))) {
setTypeNameProp(obj, pre + k);
}
if (limit > 0)
initializeTypes(obj, pre + k + ".", limit - 1);
}
}
export class Exception extends Error {
constructor(message: string) {
super(message);
this.name = "Exception";
}
}
export class ArgumentNullException extends Exception {
constructor(paramName: string, message?: string) {
super((message || 'Value cannot be null.') + '\nParameter name: ' + paramName);
this.name = "ArgumentNullException";
}
}
export class InvalidCastException extends Exception {
constructor(message: string) {
super(message);
this.name = "InvalidCastException";
}
}
export { };