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Add private named instance field transformation (bloomberg#31)
Implements private instance fields on top of the class properties refactor. Signed-off-by: Joseph Watts <jwatts43@bloomberg.net> Signed-off-by: Max Heiber <max.heiber@gmail.com>
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‎src/compiler/transformers/classProperties.ts

Lines changed: 428 additions & 17 deletions
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‎src/compiler/transformers/generators.ts

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@@ -667,28 +667,6 @@ namespace ts {
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}
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}
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function isCompoundAssignment(kind: BinaryOperator): kind is CompoundAssignmentOperator {
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return kind >= SyntaxKind.FirstCompoundAssignment
672-
&& kind <= SyntaxKind.LastCompoundAssignment;
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}
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function getOperatorForCompoundAssignment(kind: CompoundAssignmentOperator): BitwiseOperatorOrHigher {
676-
switch (kind) {
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case SyntaxKind.PlusEqualsToken: return SyntaxKind.PlusToken;
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case SyntaxKind.MinusEqualsToken: return SyntaxKind.MinusToken;
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case SyntaxKind.AsteriskEqualsToken: return SyntaxKind.AsteriskToken;
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case SyntaxKind.AsteriskAsteriskEqualsToken: return SyntaxKind.AsteriskAsteriskToken;
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case SyntaxKind.SlashEqualsToken: return SyntaxKind.SlashToken;
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case SyntaxKind.PercentEqualsToken: return SyntaxKind.PercentToken;
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case SyntaxKind.LessThanLessThanEqualsToken: return SyntaxKind.LessThanLessThanToken;
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case SyntaxKind.GreaterThanGreaterThanEqualsToken: return SyntaxKind.GreaterThanGreaterThanToken;
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case SyntaxKind.GreaterThanGreaterThanGreaterThanEqualsToken: return SyntaxKind.GreaterThanGreaterThanGreaterThanToken;
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case SyntaxKind.AmpersandEqualsToken: return SyntaxKind.AmpersandToken;
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case SyntaxKind.BarEqualsToken: return SyntaxKind.BarToken;
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case SyntaxKind.CaretEqualsToken: return SyntaxKind.CaretToken;
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}
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}
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/**
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* Visits a right-associative binary expression containing `yield`.
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*

‎src/compiler/transformers/utilities.ts

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@@ -250,6 +250,28 @@ namespace ts {
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isWellKnownSymbolSyntactically(expression);
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}
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export function isCompoundAssignment(kind: BinaryOperator): kind is CompoundAssignmentOperator {
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return kind >= SyntaxKind.FirstCompoundAssignment
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&& kind <= SyntaxKind.LastCompoundAssignment;
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}
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export function getOperatorForCompoundAssignment(kind: CompoundAssignmentOperator): BitwiseOperatorOrHigher {
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switch (kind) {
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case SyntaxKind.PlusEqualsToken: return SyntaxKind.PlusToken;
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case SyntaxKind.MinusEqualsToken: return SyntaxKind.MinusToken;
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case SyntaxKind.AsteriskEqualsToken: return SyntaxKind.AsteriskToken;
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case SyntaxKind.AsteriskAsteriskEqualsToken: return SyntaxKind.AsteriskAsteriskToken;
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case SyntaxKind.SlashEqualsToken: return SyntaxKind.SlashToken;
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case SyntaxKind.PercentEqualsToken: return SyntaxKind.PercentToken;
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case SyntaxKind.LessThanLessThanEqualsToken: return SyntaxKind.LessThanLessThanToken;
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case SyntaxKind.GreaterThanGreaterThanEqualsToken: return SyntaxKind.GreaterThanGreaterThanToken;
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case SyntaxKind.GreaterThanGreaterThanGreaterThanEqualsToken: return SyntaxKind.GreaterThanGreaterThanGreaterThanToken;
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case SyntaxKind.AmpersandEqualsToken: return SyntaxKind.AmpersandToken;
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case SyntaxKind.BarEqualsToken: return SyntaxKind.BarToken;
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case SyntaxKind.CaretEqualsToken: return SyntaxKind.CaretToken;
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}
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}
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/**
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* Adds super call and preceding prologue directives into the list of statements.
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*

‎src/compiler/types.ts

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@@ -951,6 +951,11 @@ namespace ts {
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initializer?: Expression; // Optional initializer
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}
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/*@internal*/
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export interface PrivateNamedPropertyDeclaration extends PropertyDeclaration {
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name: PrivateName;
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}
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export interface ObjectLiteralElement extends NamedDeclaration {
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_objectLiteralBrandBrand: any;
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name?: PropertyName;
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name: Identifier | PrivateName;
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}
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/*@internal*/
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export interface PrivateNamedPropertyAccessExpression extends PropertyAccessExpression {
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name: PrivateName;
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}
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export interface SuperPropertyAccessExpression extends PropertyAccessExpression {
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expression: SuperExpression;
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}

‎src/compiler/utilities.ts

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@@ -6337,6 +6337,16 @@ namespace ts {
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|| kind === SyntaxKind.ArrayBindingPattern;
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}
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/*@internal*/
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export function isPrivateNamedPropertyDeclaration(node: Node): node is PrivateNamedPropertyDeclaration {
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return isPropertyDeclaration(node) && isPrivateName(node.name);
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}
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/*@internal*/
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export function isPrivateNamedPropertyAccessExpression(node: Node): node is PrivateNamedPropertyAccessExpression {
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return isPropertyAccessExpression(node) && isPrivateName(node.name);
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}
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// Functions
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export function isFunctionLike(node: Node): node is SignatureDeclaration {

‎tests/baselines/reference/privateNameDeclaration.js

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//// [privateNameDeclaration.ts]
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class A {
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#name: string;
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}
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//// [privateNameDeclaration.js]
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var _name;
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var A = /** @class */ (function () {
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function A() {
11+
_name.set(this, void 0);
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}
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return A;
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}());
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_name = new WeakMap();

‎tests/baselines/reference/privateNameDeclaration.symbols

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=== tests/cases/conformance/classes/members/privateNames/privateNameDeclaration.ts ===
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class A {
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>A : Symbol(A, Decl(privateNameDeclaration.ts, 0, 0))
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#name: string;
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>#name : Symbol(A.#name, Decl(privateNameDeclaration.ts, 0, 9))
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}
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‎tests/baselines/reference/privateNameDeclaration.types

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=== tests/cases/conformance/classes/members/privateNames/privateNameDeclaration.ts ===
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class A {
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>A : A
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#name: string;
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>#name : string
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}
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‎tests/baselines/reference/privateNameDuplicateField.js

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@@ -8,12 +8,14 @@ class A {
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//// [privateNameDuplicateField.js]
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"use strict";
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// @target es6
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var _foo, _foo_1;
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"use strict";
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var A = /** @class */ (function () {
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function A() {
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this.#foo = "foo";
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this.#foo = "foo";
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_foo_1.set(this, "foo");
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_foo_1.set(this, "foo");
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}
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return A;
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}());
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_foo = new WeakMap(), _foo_1 = new WeakMap();

‎tests/baselines/reference/privateNameField.js

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@@ -9,11 +9,15 @@ class A {
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}
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//// [privateNameField.js]
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"use strict";
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// @target es6
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var _classPrivateFieldSet = function (receiver, privateMap, value) { if (!privateMap.has(receiver)) { throw new TypeError("attempted to set private field on non-instance"); } privateMap.set(receiver, value); return value; };
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var _name;
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"use strict";
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var A = /** @class */ (function () {
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function A(name) {
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this.#name = name;
18+
_name.set(this, void 0);
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_classPrivateFieldSet(this, _name, name);
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}
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return A;
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}());
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_name = new WeakMap();

‎tests/baselines/reference/privateNameFieldAccess.js

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//// [privateNameFieldAccess.ts]
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class A {
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#myField = "hello world";
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constructor() {
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console.log(this.#myField);
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}
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}
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//// [privateNameFieldAccess.js]
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var _classPrivateFieldGet = function (receiver, privateMap) { if (!privateMap.has(receiver)) { throw new TypeError("attempted to get private field on non-instance"); } return privateMap.get(receiver); };
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var _myField;
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var A = /** @class */ (function () {
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function A() {
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_myField.set(this, "hello world");
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console.log(_classPrivateFieldGet(this, _myField));
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}
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return A;
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}());
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_myField = new WeakMap();

‎tests/baselines/reference/privateNameFieldAccess.symbols

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=== tests/cases/conformance/classes/members/privateNames/privateNameFieldAccess.ts ===
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class A {
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>A : Symbol(A, Decl(privateNameFieldAccess.ts, 0, 0))
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#myField = "hello world";
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>#myField : Symbol(A.#myField, Decl(privateNameFieldAccess.ts, 0, 9))
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constructor() {
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console.log(this.#myField);
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>console.log : Symbol(Console.log, Decl(lib.dom.d.ts, --, --))
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>console : Symbol(console, Decl(lib.dom.d.ts, --, --))
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>log : Symbol(Console.log, Decl(lib.dom.d.ts, --, --))
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>this.#myField : Symbol(A.#myField, Decl(privateNameFieldAccess.ts, 0, 9))
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>this : Symbol(A, Decl(privateNameFieldAccess.ts, 0, 0))
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}
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}
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‎tests/baselines/reference/privateNameFieldAccess.types

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=== tests/cases/conformance/classes/members/privateNames/privateNameFieldAccess.ts ===
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class A {
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>A : A
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#myField = "hello world";
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>#myField : string
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>"hello world" : "hello world"
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9+
constructor() {
10+
console.log(this.#myField);
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>console.log(this.#myField) : void
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>console.log : (message?: any, ...optionalParams: any[]) => void
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>console : Console
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>log : (message?: any, ...optionalParams: any[]) => void
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>this.#myField : string
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>this : this
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}
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}
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‎tests/baselines/reference/privateNameFieldAssignment.js

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//// [privateNameFieldAssignment.ts]
2+
class A {
3+
#field = 0;
4+
constructor() {
5+
this.#field = 1;
6+
this.#field += 2;
7+
this.#field -= 3;
8+
this.#field /= 4;
9+
this.#field *= 5;
10+
this.#field **= 6;
11+
this.#field %= 7;
12+
this.#field <<= 8;
13+
this.#field >>= 9;
14+
this.#field >>>= 10;
15+
this.#field &= 11;
16+
this.#field |= 12;
17+
this.#field ^= 13;
18+
A.getInstance().#field = 1;
19+
A.getInstance().#field += 2;
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A.getInstance().#field -= 3;
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A.getInstance().#field /= 4;
22+
A.getInstance().#field *= 5;
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A.getInstance().#field **= 6;
24+
A.getInstance().#field %= 7;
25+
A.getInstance().#field <<= 8;
26+
A.getInstance().#field >>= 9;
27+
A.getInstance().#field >>>= 10;
28+
A.getInstance().#field &= 11;
29+
A.getInstance().#field |= 12;
30+
A.getInstance().#field ^= 13;
31+
}
32+
static getInstance() {
33+
return new A();
34+
}
35+
}
36+
37+
38+
//// [privateNameFieldAssignment.js]
39+
var _classPrivateFieldSet = function (receiver, privateMap, value) { if (!privateMap.has(receiver)) { throw new TypeError("attempted to set private field on non-instance"); } privateMap.set(receiver, value); return value; };
40+
var _classPrivateFieldGet = function (receiver, privateMap) { if (!privateMap.has(receiver)) { throw new TypeError("attempted to get private field on non-instance"); } return privateMap.get(receiver); };
41+
var _field;
42+
var A = /** @class */ (function () {
43+
function A() {
44+
_field.set(this, 0);
45+
var _a, _b, _c, _d, _e, _f, _g, _h, _j, _k, _l, _m;
46+
_classPrivateFieldSet(this, _field, 1);
47+
_classPrivateFieldSet(this, _field, _classPrivateFieldGet(this, _field) + 2);
48+
_classPrivateFieldSet(this, _field, _classPrivateFieldGet(this, _field) - 3);
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_classPrivateFieldSet(this, _field, _classPrivateFieldGet(this, _field) / 4);
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_classPrivateFieldSet(this, _field, _classPrivateFieldGet(this, _field) * 5);
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_classPrivateFieldSet(this, _field, Math.pow(_classPrivateFieldGet(this, _field), 6));
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_classPrivateFieldSet(this, _field, _classPrivateFieldGet(this, _field) % 7);
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_classPrivateFieldSet(this, _field, _classPrivateFieldGet(this, _field) << 8);
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_classPrivateFieldSet(this, _field, _classPrivateFieldGet(this, _field) >> 9);
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_classPrivateFieldSet(this, _field, _classPrivateFieldGet(this, _field) >>> 10);
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_classPrivateFieldSet(this, _field, _classPrivateFieldGet(this, _field) & 11);
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_classPrivateFieldSet(this, _field, _classPrivateFieldGet(this, _field) | 12);
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_classPrivateFieldSet(this, _field, _classPrivateFieldGet(this, _field) ^ 13);
59+
_classPrivateFieldSet(A.getInstance(), _field, 1);
60+
_classPrivateFieldSet(_a = A.getInstance(), _field, _classPrivateFieldGet(_a, _field) + 2);
61+
_classPrivateFieldSet(_b = A.getInstance(), _field, _classPrivateFieldGet(_b, _field) - 3);
62+
_classPrivateFieldSet(_c = A.getInstance(), _field, _classPrivateFieldGet(_c, _field) / 4);
63+
_classPrivateFieldSet(_d = A.getInstance(), _field, _classPrivateFieldGet(_d, _field) * 5);
64+
_classPrivateFieldSet(_e = A.getInstance(), _field, Math.pow(_classPrivateFieldGet(_e, _field), 6));
65+
_classPrivateFieldSet(_f = A.getInstance(), _field, _classPrivateFieldGet(_f, _field) % 7);
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_classPrivateFieldSet(_g = A.getInstance(), _field, _classPrivateFieldGet(_g, _field) << 8);
67+
_classPrivateFieldSet(_h = A.getInstance(), _field, _classPrivateFieldGet(_h, _field) >> 9);
68+
_classPrivateFieldSet(_j = A.getInstance(), _field, _classPrivateFieldGet(_j, _field) >>> 10);
69+
_classPrivateFieldSet(_k = A.getInstance(), _field, _classPrivateFieldGet(_k, _field) & 11);
70+
_classPrivateFieldSet(_l = A.getInstance(), _field, _classPrivateFieldGet(_l, _field) | 12);
71+
_classPrivateFieldSet(_m = A.getInstance(), _field, _classPrivateFieldGet(_m, _field) ^ 13);
72+
}
73+
A.getInstance = function () {
74+
return new A();
75+
};
76+
return A;
77+
}());
78+
_field = new WeakMap();

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