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module ts {
interface Map<T> {
[index: string]: T;
}
interface Equals<T> {
equals(other: T): boolean;
}
class Symbol {
}
class Type extends Symbol {
equals(that: Type): boolean {
if (this === that) return true;
if (!(this.isObjectType() && that.isObjectType())) return false;
var propCount = that.getPropertyCount();
if (propCount !== this.getPropertyCount()) return false;
var sigCount = that.getSignatureCount();
if (sigCount !== this.getSignatureCount()) return false;
if (propCount) {
for (var i = 0; i < propCount; i++) {
var thisProp = this.getProperty(i);
var thatProp = that.getPropertyByName(thisProp.name);
if (!(thatProp && thisProp.flags === thatProp.flags && thisProp.type.equals(thatProp.type))) return false;
}
}
if (sigCount) {
if (!setEquals(this.getSignatures(), that.getSignatures())) return false;
}
return true;
}
getProperties(): Property[] {
return [];
}
getProperty(index: number): Property {
return undefined;
}
getPropertyByName(name: string): Property {
return undefined;
}
getPropertyCount(): number {
return 0;
}
getSignature(index: number): Signature {
return undefined;
}
getSignatureCount(): number {
return 0;
}
getSignatures(): Signature[] {
return [];
}
isPrimitive(): boolean {
return false;
}
isObjectType(): boolean {
return false;
}
isTypeParameter(): boolean {
return false;
}
isSubTypeOf(type: Type) {
}
}
class Property extends Symbol {
constructor(public name: string, public type: Type, public flags: PropertyFlags) {
super();
}
equals(other: Property): boolean {
return this.name === other.name &&
this.flags === other.flags &&
this.type.equals(other.type);
}
}
enum PropertyFlags {
Optional = 1,
Private = 2
}
class Signature extends Symbol {
constructor(public typeParameters: TypeParameter[], public parameters: Parameter[], public returnType: Type) {
super();
}
equalsNoReturn(other: Signature): boolean {
return this.parameters.length === other.parameters.length &&
this.typeParameters.length === other.typeParameters.length &&
arrayEquals(this.parameters, other.parameters) &&
arrayEquals(this.typeParameters, other.typeParameters);
}
equals(other: Signature): boolean {
return this.equalsNoReturn(other) &&
this.returnType.equals(other.returnType);
}
}
class Parameter extends Symbol {
constructor(public name: string, public type: Type, public flags: ParameterFlags) {
super();
}
equals(other: Parameter) {
return this.name === other.name &&
this.flags === other.flags &&
this.type.equals(other.type);
}
}
enum ParameterFlags {
Optional = 1,
Rest = 2
}
var hasOwnProperty = Object.prototype.hasOwnProperty;
function getProperty<T>(map: Map<T>, key: string): T {
if (!hasOwnProperty.call(map, key)) return undefined;
return map[key];
}
function hasProperty<T>(map: Map<T>, key: string): boolean {
return hasOwnProperty.call(map, key);
}
function arrayContains<T extends Equals<T>>(a: T[], item: T): boolean {
var len = a.length;
for (var i = 0; i < len; i++) {
if (item.equals(a[i])) return true;
}
return false;
}
function arrayEquals<T extends Equals<T>>(a: T[], b: T[]): boolean {
var len = a.length;
if (b.length !== len) return false;
for (var i = 0; i < len; i++) {
if (!a[i].equals(b[i])) return false;
}
return true;
}
function setEquals<T extends Equals<T>>(a: T[], b: T[]): boolean {
var len = a.length;
if (b.length !== len) return false;
for (var i = 0; i < len; i++) {
if (!arrayContains(b, a[i])) return false;
}
return true;
}
}
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