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// |jit-test| skip-if: !getBuildConfiguration("decorators")
load(libdir + "asserts.js");
let dec1Called = false;
// This explicitly tests the case where undefined is returned.
function dec1(value, context) {
dec1Called = true;
// return undefined
}
function dec2(value, context) {
return (x) => "replaced: " + x;
}
function dec3(value, context) {
return (x) => "decorated: " + value.call(this, x);
}
let decorators = {
"dec4": (value, context) => {
return (x) => "decorated: " + x;
},
"more": {
"deeply": {
"nested": {
"dec5": (value, context) => {
return (x) => "decorated: " + x;
}
}
}
}
};
function dec6(arg) {
return (value, context) => {
return (x) => arg + " decorated: " + value.call(this, x);
}
}
function checkDecoratorContext(kind, isPrivate, isStatic, name) {
return (value, context) => {
assertEq(typeof value.call, "function");
assertEq(context.kind, kind);
assertEq(typeof context.access, "object");
assertEq(context.private, isPrivate);
assertEq(context.static, isStatic);
assertEq(context.name, name);
if (isStatic) {
assertEq(typeof context.addInitializer, "undefined");
} else {
assertEq(typeof context.addInitializer, "function");
}
}
}
class C {
@dec1 f1(x) { return "called with: " + x; }
@dec2 f2(x) { return "called with: " + x; }
@dec1 @dec2 f3(x) { return "called with: " + x; }
@dec1 @dec2 @dec3 f4(x) { return "called with: " + x; }
@decorators.dec4 f5(x) { return "called with: " + x; }
@decorators.more.deeply.nested.dec5 f6(x) { return "called with: " + x; }
@(() => { }) f7(x) { return "called with: " + x; }
@((value, context) => { return (x) => "decorated: " + x; }) f8(x) { return "called with: " + x; }
@dec6("hello!") f9(x) { return "called with: " + x; }
static dec7(value, context) { return function(x) { return "replaced: " + x; } }
static #dec8(value, context) { return function(x) { return "replaced: " + x; } }
static {
this.D = class {
@C.dec7 static f10(x) { return "called with: " + x; }
@C.#dec8 static f11(x) { return "called with: " + x; }
}
}
@checkDecoratorContext("method", false, false, "f12") f12(x) { return x; }
@checkDecoratorContext("method", false, true, "f13") static f13(x) { return x; }
@checkDecoratorContext("method", true, false, "#f14") #f14(x) { return x; }
}
let c = new C();
assertEq(dec1Called, true);
assertEq(c.f1("value"), "called with: value");
assertEq(c.f2("value"), "replaced: value");
assertEq(c.f3("value"), "replaced: value");
assertEq(c.f4("value"), "replaced: value");
assertEq(c.f5("value"), "decorated: value");
assertEq(c.f6("value"), "decorated: value");
assertEq(c.f7("value"), "called with: value");
assertEq(c.f8("value"), "decorated: value");
assertEq(c.f9("value"), "hello! decorated: called with: value");
assertEq(C.D.f10("value"), "replaced: value");
assertEq(C.D.f11("value"), "replaced: value");
assertThrowsInstanceOf(() => {
class D {
@(() => { return "hello!"; }) f(x) { return x; }
}
}, TypeError), "Returning a value other than undefined or a callable throws.";
const decoratorOrder = [];
function makeOrderedDecorator(order) {
return function (value, context) {
decoratorOrder.push(order);
return value;
}
}
class E {
@makeOrderedDecorator(1) @makeOrderedDecorator(2) @makeOrderedDecorator(3)
f(x) { return x; }
}
let e = new E();
assertEq(e.f("value"), "value");
assertEq(decoratorOrder.length, 3);
assertEq(decoratorOrder[0], 3);
assertEq(decoratorOrder[1], 2);
assertEq(decoratorOrder[2], 1);