@babel/helpers
Version:
Collection of helper functions used by Babel transforms.
422 lines (419 loc) • 12.5 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = applyDecs2301;
var _checkInRHS = require("checkInRHS");
var _setFunctionName = require("setFunctionName");
var _toPropertyKey = require("toPropertyKey");
function applyDecs2301Factory() {
function createAddInitializerMethod(initializers, decoratorFinishedRef) {
return function addInitializer(initializer) {
assertNotFinished(decoratorFinishedRef, "addInitializer");
assertCallable(initializer, "An initializer");
initializers.push(initializer);
};
}
function assertInstanceIfPrivate(has, target) {
if (!has(target)) {
throw new TypeError("Attempted to access private element on non-instance");
}
}
function memberDec(dec, name, desc, initializers, kind, isStatic, isPrivate, value, hasPrivateBrand) {
var kindStr;
switch (kind) {
case 1:
kindStr = "accessor";
break;
case 2:
kindStr = "method";
break;
case 3:
kindStr = "getter";
break;
case 4:
kindStr = "setter";
break;
default:
kindStr = "field";
}
var ctx = {
kind: kindStr,
name: isPrivate ? "#" + name : _toPropertyKey(name),
static: isStatic,
private: isPrivate
};
var decoratorFinishedRef = {
v: false
};
if (kind !== 0) {
ctx.addInitializer = createAddInitializerMethod(initializers, decoratorFinishedRef);
}
var get, set;
if (!isPrivate && (kind === 0 || kind === 2)) {
get = function (target) {
return target[name];
};
if (kind === 0) {
set = function (target, v) {
target[name] = v;
};
}
} else if (kind === 2) {
get = function (target) {
assertInstanceIfPrivate(hasPrivateBrand, target);
return desc.value;
};
} else {
var t = kind === 0 || kind === 1;
if (t || kind === 3) {
if (isPrivate) {
get = function (target) {
assertInstanceIfPrivate(hasPrivateBrand, target);
return desc.get.call(target);
};
} else {
get = function (target) {
return desc.get.call(target);
};
}
}
if (t || kind === 4) {
if (isPrivate) {
set = function (target, value) {
assertInstanceIfPrivate(hasPrivateBrand, target);
desc.set.call(target, value);
};
} else {
set = function (target, value) {
desc.set.call(target, value);
};
}
}
}
var has = isPrivate ? hasPrivateBrand.bind() : function (target) {
return name in target;
};
ctx.access = get && set ? {
get: get,
set: set,
has: has
} : get ? {
get: get,
has: has
} : {
set: set,
has: has
};
try {
return dec(value, ctx);
} finally {
decoratorFinishedRef.v = true;
}
}
function assertNotFinished(decoratorFinishedRef, fnName) {
if (decoratorFinishedRef.v) {
throw new Error("attempted to call " + fnName + " after decoration was finished");
}
}
function assertCallable(fn, hint) {
if (typeof fn !== "function") {
throw new TypeError(hint + " must be a function");
}
}
function assertValidReturnValue(kind, value) {
var type = typeof value;
if (kind === 1) {
if (type !== "object" || value === null) {
throw new TypeError("accessor decorators must return an object with get, set, or init properties or void 0");
}
if (value.get !== undefined) {
assertCallable(value.get, "accessor.get");
}
if (value.set !== undefined) {
assertCallable(value.set, "accessor.set");
}
if (value.init !== undefined) {
assertCallable(value.init, "accessor.init");
}
} else if (type !== "function") {
var hint;
if (kind === 0) {
hint = "field";
} else if (kind === 10) {
hint = "class";
} else {
hint = "method";
}
throw new TypeError(hint + " decorators must return a function or void 0");
}
}
function curryThis1(fn) {
return function () {
return fn(this);
};
}
function curryThis2(fn) {
return function (value) {
fn(this, value);
};
}
function applyMemberDec(ret, base, decInfo, name, kind, isStatic, isPrivate, initializers, hasPrivateBrand) {
var decs = decInfo[0];
var desc, init, prefix, value;
if (isPrivate) {
if (kind === 0 || kind === 1) {
desc = {
get: curryThis1(decInfo[3]),
set: curryThis2(decInfo[4])
};
prefix = "get";
} else {
if (kind === 3) {
desc = {
get: decInfo[3]
};
prefix = "get";
} else if (kind === 4) {
desc = {
set: decInfo[3]
};
prefix = "set";
} else {
desc = {
value: decInfo[3]
};
}
}
if (kind !== 0) {
if (kind === 1) {
_setFunctionName(desc.set, "#" + name, "set");
}
_setFunctionName(desc[prefix || "value"], "#" + name, prefix);
}
} else if (kind !== 0) {
desc = Object.getOwnPropertyDescriptor(base, name);
}
if (kind === 1) {
value = {
get: desc.get,
set: desc.set
};
} else if (kind === 2) {
value = desc.value;
} else if (kind === 3) {
value = desc.get;
} else if (kind === 4) {
value = desc.set;
}
var newValue, get, set;
if (typeof decs === "function") {
newValue = memberDec(decs, name, desc, initializers, kind, isStatic, isPrivate, value, hasPrivateBrand);
if (newValue !== void 0) {
assertValidReturnValue(kind, newValue);
if (kind === 0) {
init = newValue;
} else if (kind === 1) {
init = newValue.init;
get = newValue.get || value.get;
set = newValue.set || value.set;
value = {
get: get,
set: set
};
} else {
value = newValue;
}
}
} else {
for (var i = decs.length - 1; i >= 0; i--) {
var dec = decs[i];
newValue = memberDec(dec, name, desc, initializers, kind, isStatic, isPrivate, value, hasPrivateBrand);
if (newValue !== void 0) {
assertValidReturnValue(kind, newValue);
var newInit;
if (kind === 0) {
newInit = newValue;
} else if (kind === 1) {
newInit = newValue.init;
get = newValue.get || value.get;
set = newValue.set || value.set;
value = {
get: get,
set: set
};
} else {
value = newValue;
}
if (newInit !== void 0) {
if (init === void 0) {
init = newInit;
} else if (typeof init === "function") {
init = [init, newInit];
} else {
init.push(newInit);
}
}
}
}
}
if (kind === 0 || kind === 1) {
if (init === void 0) {
init = function (instance, init) {
return init;
};
} else if (typeof init !== "function") {
var ownInitializers = init;
init = function (instance, init) {
var value = init;
for (var i = 0; i < ownInitializers.length; i++) {
value = ownInitializers[i].call(instance, value);
}
return value;
};
} else {
var originalInitializer = init;
init = function (instance, init) {
return originalInitializer.call(instance, init);
};
}
ret.push(init);
}
if (kind !== 0) {
if (kind === 1) {
desc.get = value.get;
desc.set = value.set;
} else if (kind === 2) {
desc.value = value;
} else if (kind === 3) {
desc.get = value;
} else if (kind === 4) {
desc.set = value;
}
if (isPrivate) {
if (kind === 1) {
ret.push(function (instance, args) {
return value.get.call(instance, args);
});
ret.push(function (instance, args) {
return value.set.call(instance, args);
});
} else if (kind === 2) {
ret.push(value);
} else {
ret.push(function (instance, args) {
return value.call(instance, args);
});
}
} else {
Object.defineProperty(base, name, desc);
}
}
}
function applyMemberDecs(Class, decInfos, instanceBrand) {
var ret = [];
var protoInitializers;
var staticInitializers;
var staticBrand;
var existingProtoNonFields = new Map();
var existingStaticNonFields = new Map();
for (var i = 0; i < decInfos.length; i++) {
var decInfo = decInfos[i];
if (!Array.isArray(decInfo)) continue;
var kind = decInfo[1];
var name = decInfo[2];
var isPrivate = decInfo.length > 3;
var isStatic = kind >= 5;
var base;
var initializers;
var hasPrivateBrand = instanceBrand;
if (isStatic) {
base = Class;
kind = kind - 5;
if (kind !== 0) {
staticInitializers = staticInitializers || [];
initializers = staticInitializers;
}
if (isPrivate && !staticBrand) {
staticBrand = function (_) {
return _checkInRHS(_) === Class;
};
}
hasPrivateBrand = staticBrand;
} else {
base = Class.prototype;
if (kind !== 0) {
protoInitializers = protoInitializers || [];
initializers = protoInitializers;
}
}
if (kind !== 0 && !isPrivate) {
var existingNonFields = isStatic ? existingStaticNonFields : existingProtoNonFields;
var existingKind = existingNonFields.get(name) || 0;
if (existingKind === true || existingKind === 3 && kind !== 4 || existingKind === 4 && kind !== 3) {
throw new Error("Attempted to decorate a public method/accessor that has the same name as a previously decorated public method/accessor. This is not currently supported by the decorators plugin. Property name was: " + name);
} else if (!existingKind && kind > 2) {
existingNonFields.set(name, kind);
} else {
existingNonFields.set(name, true);
}
}
applyMemberDec(ret, base, decInfo, name, kind, isStatic, isPrivate, initializers, hasPrivateBrand);
}
pushInitializers(ret, protoInitializers);
pushInitializers(ret, staticInitializers);
return ret;
}
function pushInitializers(ret, initializers) {
if (initializers) {
ret.push(function (instance) {
for (var i = 0; i < initializers.length; i++) {
initializers[i].call(instance);
}
return instance;
});
}
}
function applyClassDecs(targetClass, classDecs) {
if (classDecs.length > 0) {
var initializers = [];
var newClass = targetClass;
var name = targetClass.name;
for (var i = classDecs.length - 1; i >= 0; i--) {
var decoratorFinishedRef = {
v: false
};
try {
var nextNewClass = classDecs[i](newClass, {
kind: "class",
name: name,
addInitializer: createAddInitializerMethod(initializers, decoratorFinishedRef)
});
} finally {
decoratorFinishedRef.v = true;
}
if (nextNewClass !== undefined) {
assertValidReturnValue(10, nextNewClass);
newClass = nextNewClass;
}
}
return [newClass, function () {
for (var i = 0; i < initializers.length; i++) {
initializers[i].call(newClass);
}
}];
}
}
return function applyDecs2301(targetClass, memberDecs, classDecs, instanceBrand) {
return {
e: applyMemberDecs(targetClass, memberDecs, instanceBrand),
get c() {
return applyClassDecs(targetClass, classDecs);
}
};
};
}
function applyDecs2301(targetClass, memberDecs, classDecs, instanceBrand) {
return (exports.default = applyDecs2301 = applyDecs2301Factory())(targetClass, memberDecs, classDecs, instanceBrand);
}
//# sourceMappingURL=applyDecs2301.js.map