assemblyscript/src/program.ts at main · deep-stack/assemblyscript · GitHub

History

4732 lines (4407 loc) · 165 KB

Raw

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

226

227

228

229

230

231

232

233

234

235

236

237

238

239

240

241

242

243

244

245

246

247

248

249

250

251

252

253

254

255

256

257

258

259

260

261

262

263

264

265

266

267

268

269

270

271

272

273

274

275

276

277

278

279

280

281

282

283

284

285

286

287

288

289

290

291

292

293

294

295

296

297

298

299

300

301

302

303

304

305

306

307

308

309

310

311

312

313

314

315

316

317

318

319

320

321

322

323

324

325

326

327

328

329

330

331

332

333

334

335

336

337

338

339

340

341

342

343

344

345

346

347

348

349

350

351

352

353

354

355

356

357

358

359

360

361

362

363

364

365

366

367

368

369

370

371

372

373

374

375

376

377

378

379

380

381

382

383

384

385

386

387

388

389

390

391

392

393

394

395

396

397

398

399

400

401

402

403

404

405

406

407

408

409

410

411

412

413

414

415

416

417

418

419

420

421

422

423

424

425

426

427

428

429

430

431

432

433

434

435

436

437

438

439

440

441

442

443

444

445

446

447

448

449

450

451

452

453

454

455

456

457

458

459

460

461

462

463

464

465

466

467

468

469

470

471

472

473

474

475

476

477

478

479

480

481

482

483

484

485

486

487

488

489

490

491

492

493

494

495

496

497

498

499

500

501

502

503

504

505

506

507

508

509

510

511

512

513

514

515

516

517

518

519

520

521

522

523

524

525

526

527

528

529

530

531

532

533

534

535

536

537

538

539

540

541

542

543

544

545

546

547

548

549

550

551

552

553

554

555

556

557

558

559

560

561

562

563

564

565

566

567

568

569

570

571

572

573

574

575

576

577

578

579

580

581

582

583

584

585

586

587

588

589

590

591

592

593

594

595

596

597

598

599

600

601

602

603

604

605

606

607

608

609

610

611

612

613

614

615

616

617

618

619

620

621

622

623

624

625

626

627

628

629

630

631

632

633

634

635

636

637

638

639

640

641

642

643

644

645

646

647

648

649

650

651

652

653

654

655

656

657

658

659

660

661

662

663

664

665

666

667

668

669

670

671

672

673

674

675

676

677

678

679

680

681

682

683

684

685

686

687

688

689

690

691

692

693

694

695

696

697

698

699

700

701

702

703

704

705

706

707

708

709

710

711

712

713

714

715

716

717

718

719

720

721

722

723

724

725

726

727

728

729

730

731

732

733

734

735

736

737

738

739

740

741

742

743

744

745

746

747

748

749

750

751

752

753

754

755

756

757

758

759

760

761

762

763

764

765

766

767

768

769

770

771

772

773

774

775

776

777

778

779

780

781

782

783

784

785

786

787

788

789

790

791

792

793

794

795

796

797

798

799

800

801

802

803

804

805

806

807

808

809

810

811

812

813

814

815

816

817

818

819

820

821

822

823

824

825

826

827

828

829

830

831

832

833

834

835

836

837

838

839

840

841

842

843

844

845

846

847

848

849

850

851

852

853

854

855

856

857

858

859

860

861

862

863

864

865

866

867

868

869

870

871

872

873

874

875

876

877

878

879

880

881

882

883

884

885

886

887

888

889

890

891

892

893

894

895

896

897

898

899

900

901

902

903

904

905

906

907

908

909

910

911

912

913

914

915

916

917

918

919

920

921

922

923

924

925

926

927

928

929

930

931

932

933

934

935

936

937

938

939

940

941

942

943

944

945

946

947

948

949

950

951

952

953

954

955

956

957

958

959

960

961

962

963

964

965

966

967

968

969

970

971

972

973

974

975

976

977

978

979

980

981

982

983

984

985

986

987

988

989

990

991

992

993

994

995

996

997

998

999

1000

/**

* @fileoverview AssemblyScript's intermediate representation.

* The compiler uses Binaryen IR, which is fairly low level, as its

* primary intermediate representation, with the following structures

* holding any higher level information that cannot be represented by

* Binaryen IR alone, for example higher level types.

* Similar to the AST being composed of `Node`s in `Source`s, the IR is

* composed of `Element`s in a `Program`. Each class or function is

* represented by a "prototype" holding all the relevant information,

* including each's concrete instances. If a class or function is not

* generic, there is exactly one instance, otherwise there is one for

* each concrete set of type arguments.

* @license Apache-2.0

// Element Base class of all elements

// ├─DeclaredElement Base class of elements with a declaration

// │ ├─TypedElement Base class of elements resolving to a type

// │ │ ├─TypeDefinition Type alias declaration

// │ │ ├─VariableLikeElement Base class of all variable-like elements

// │ │ │ ├─EnumValue Enum value

// │ │ │ ├─Global File global

// │ │ │ ├─Local Function local

// │ │ │ ├─Field Class field (instance only)

// │ │ │ └─Property Class property

// │ │ ├─IndexSignature Class index signature

// │ │ ├─Function Concrete function instance

// │ │ └─Class Concrete class instance

// │ ├─Namespace Namespace with static members

// │ ├─FunctionPrototype Prototype of concrete function instances

// │ ├─FieldPrototype Prototype of concrete field instances

// │ ├─PropertyPrototype Prototype of concrete property instances

// │ └─ClassPrototype Prototype of concrete classe instances

// └─File File, analogous to Source in the AST

import {

CommonFlags,

PATH_DELIMITER,

STATIC_DELIMITER,

INSTANCE_DELIMITER,

GETTER_PREFIX,

SETTER_PREFIX,

INNER_DELIMITER,

LIBRARY_SUBST,

INDEX_SUFFIX,

STUB_DELIMITER,

CommonNames,

Feature,

Target

} from "./common";

import {

Options

} from "./compiler";

import {

DiagnosticCode,

DiagnosticMessage,

DiagnosticEmitter

} from "./diagnostics";

import {

Type,

TypeKind,

Signature,

TypeFlags

} from "./types";

import {

Token,

Range

} from "./tokenizer";

import {

Node,

NodeKind,

Source,

SourceKind,

DecoratorNode,

DecoratorKind,

TypeParameterNode,

TypeNode,

NamedTypeNode,

FunctionTypeNode,

ArrowKind,

Expression,

IdentifierExpression,

LiteralKind,

StringLiteralExpression,

Statement,

ClassDeclaration,

DeclarationStatement,

EnumDeclaration,

EnumValueDeclaration,

ExportMember,

ExportDefaultStatement,

ExportStatement,

FieldDeclaration,

FunctionDeclaration,

ImportDeclaration,

ImportStatement,

InterfaceDeclaration,

MethodDeclaration,

NamespaceDeclaration,

TypeDeclaration,

VariableDeclaration,

VariableLikeDeclarationStatement,

VariableStatement,

ParameterKind

} from "./ast";

import {

Module,

FunctionRef,

MemorySegment

} from "./module";

import {

CharCode,

writeI8,

writeI16,

writeI32,

writeF32,

writeF64,

writeI64,

writeI32AsI64,

writeI64AsI32

} from "./util";

import {

Resolver

} from "./resolver";

import {

Flow

} from "./flow";

import {

Parser

} from "./parser";

import {

BuiltinNames

} from "./builtins";

// Memory manager constants

const AL_SIZE = 16;

const AL_MASK = AL_SIZE - 1;

/** Represents a yet unresolved `import`. */

class QueuedImport {

constructor(

/** File being imported into. */

public localFile: File,

/** Identifier within the local file. */

public localIdentifier: IdentifierExpression,

/** Identifier within the other file. Is an `import *` if not set. */

public foreignIdentifier: IdentifierExpression | null,

/** Path to the other file. */

public foreignPath: string,

/** Alternative path to the other file. */

public foreignPathAlt: string

) {}

}

/** Represents a yet unresolved `export`. */

class QueuedExport {

constructor(

/** Identifier within the local file. */

public localIdentifier: IdentifierExpression,

/** Identifier within the other file. */

public foreignIdentifier: IdentifierExpression,

/** Path to the other file if a re-export. */

public foreignPath: string | null,

/** Alternative path to the other file if a re-export. */

public foreignPathAlt: string | null

) {}

}

/** Represents a yet unresolved `export *`. */

class QueuedExportStar {

// stored in a map with localFile as the key

constructor(

/** Path to the other file. */

public foreignPath: string,

/** Alternative path to the other file. */

public foreignPathAlt: string,

/** Reference to the path literal for reporting. */

public pathLiteral: StringLiteralExpression

) {}

}

/** Represents the kind of an operator overload. */

export enum OperatorKind {

INVALID,

// indexed access

INDEXED_GET, // a[]

INDEXED_SET, // a[]=b

UNCHECKED_INDEXED_GET, // unchecked(a[])

UNCHECKED_INDEXED_SET, // unchecked(a[]=b)

// binary

ADD, // a + b

SUB, // a - b

MUL, // a * b

DIV, // a / b

REM, // a % b

POW, // a ** b

BITWISE_AND, // a & b

BITWISE_OR, // a | b

BITWISE_XOR, // a ^ b

BITWISE_SHL, // a << b

BITWISE_SHR, // a >> b

BITWISE_SHR_U, // a >>> b

EQ, // a == b

NE, // a != b

GT, // a > b

GE, // a >= b

LT, // a < b

LE, // a <= b

// unary prefix

PLUS, // +a

MINUS, // -a

NOT, // !a

BITWISE_NOT, // ~a

PREFIX_INC, // ++a

PREFIX_DEC, // --a

// unary postfix

POSTFIX_INC, // a++

POSTFIX_DEC // a--

// not overridable:

// IDENTITY // a === b

// LOGICAL_AND // a && b

// LOGICAL_OR // a || b

}

export namespace OperatorKind {

/** Returns the operator kind represented by the specified decorator and string argument. */

export function fromDecorator(decoratorKind: DecoratorKind, arg: string): OperatorKind {

assert(arg.length);

switch (decoratorKind) {

case DecoratorKind.OPERATOR:

case DecoratorKind.OPERATOR_BINARY: {

switch (arg.charCodeAt(0)) {

case CharCode.OPENBRACKET: {

if (arg == "[]") return OperatorKind.INDEXED_GET;

if (arg == "[]=") return OperatorKind.INDEXED_SET;

break;

}

case CharCode.OPENBRACE: {

if (arg == "{}") return OperatorKind.UNCHECKED_INDEXED_GET;

if (arg == "{}=") return OperatorKind.UNCHECKED_INDEXED_SET;

break;

}

case CharCode.PLUS: {

if (arg == "+") return OperatorKind.ADD;

break;

}

case CharCode.MINUS: {

if (arg == "-") return OperatorKind.SUB;

break;

}

case CharCode.ASTERISK: {

if (arg == "*") return OperatorKind.MUL;

if (arg == "**") return OperatorKind.POW;

break;

}

case CharCode.SLASH: {

if (arg == "/") return OperatorKind.DIV;

break;

}

case CharCode.PERCENT: {

if (arg == "%") return OperatorKind.REM;

break;

}

case CharCode.AMPERSAND: {

if (arg == "&") return OperatorKind.BITWISE_AND;

break;

}

case CharCode.BAR: {

if (arg == "|") return OperatorKind.BITWISE_OR;

break;

}

case CharCode.CARET: {

if (arg == "^") return OperatorKind.BITWISE_XOR;

break;

}

case CharCode.EQUALS: {

if (arg == "==") return OperatorKind.EQ;

break;

}

case CharCode.EXCLAMATION: {

if (arg == "!=") return OperatorKind.NE;

break;

}

case CharCode.GREATERTHAN: {

if (arg == ">") return OperatorKind.GT;

if (arg == ">=") return OperatorKind.GE;

if (arg == ">>") return OperatorKind.BITWISE_SHR;

if (arg == ">>>") return OperatorKind.BITWISE_SHR_U;

break;

}

case CharCode.LESSTHAN: {

if (arg == "<") return OperatorKind.LT;

if (arg == "<=") return OperatorKind.LE;

if (arg == "<<") return OperatorKind.BITWISE_SHL;

break;

}

break;

}

case DecoratorKind.OPERATOR_PREFIX: {

switch (arg.charCodeAt(0)) {

case CharCode.PLUS: {

if (arg == "+") return OperatorKind.PLUS;

if (arg == "++") return OperatorKind.PREFIX_INC;

break;

}

case CharCode.MINUS: {

if (arg == "-") return OperatorKind.MINUS;

if (arg == "--") return OperatorKind.PREFIX_DEC;

break;

}

case CharCode.EXCLAMATION: {

if (arg == "!") return OperatorKind.NOT;

break;

}

case CharCode.TILDE: {

if (arg == "~") return OperatorKind.BITWISE_NOT;

break;

}

break;

}

case DecoratorKind.OPERATOR_POSTFIX: {

switch (arg.charCodeAt(0)) {

case CharCode.PLUS: {

if (arg == "++") return OperatorKind.POSTFIX_INC;

break;

}

case CharCode.MINUS: {

if (arg == "--") return OperatorKind.POSTFIX_DEC;

break;

}

break;

}

return OperatorKind.INVALID;

}

/** Converts a binary operator token to the respective operator kind. */

export function fromBinaryToken(token: Token): OperatorKind {

switch (token) {

case Token.PLUS:

case Token.PLUS_EQUALS: return OperatorKind.ADD;

case Token.MINUS:

case Token.MINUS_EQUALS: return OperatorKind.SUB;

case Token.ASTERISK:

case Token.ASTERISK_EQUALS: return OperatorKind.MUL;

case Token.SLASH:

case Token.SLASH_EQUALS: return OperatorKind.DIV;

case Token.PERCENT:

case Token.PERCENT_EQUALS: return OperatorKind.REM;

case Token.ASTERISK_ASTERISK:

case Token.ASTERISK_ASTERISK_EQUALS: return OperatorKind.POW;

case Token.AMPERSAND:

case Token.AMPERSAND_EQUALS: return OperatorKind.BITWISE_AND;

case Token.BAR:

case Token.BAR_EQUALS: return OperatorKind.BITWISE_OR;

case Token.CARET:

case Token.CARET_EQUALS: return OperatorKind.BITWISE_XOR;

case Token.LESSTHAN_LESSTHAN:

case Token.LESSTHAN_LESSTHAN_EQUALS: return OperatorKind.BITWISE_SHL;

case Token.GREATERTHAN_GREATERTHAN:

case Token.GREATERTHAN_GREATERTHAN_EQUALS: return OperatorKind.BITWISE_SHR;

case Token.GREATERTHAN_GREATERTHAN_GREATERTHAN:

case Token.GREATERTHAN_GREATERTHAN_GREATERTHAN_EQUALS: return OperatorKind.BITWISE_SHR_U;

case Token.EQUALS_EQUALS: return OperatorKind.EQ;

case Token.EXCLAMATION_EQUALS: return OperatorKind.NE;

case Token.GREATERTHAN: return OperatorKind.GT;

case Token.GREATERTHAN_EQUALS: return OperatorKind.GE;

case Token.LESSTHAN: return OperatorKind.LT;

case Token.LESSTHAN_EQUALS: return OperatorKind.LE;

}

return OperatorKind.INVALID;

}

/** Converts a unary prefix operator token to the respective operator kind. */

export function fromUnaryPrefixToken(token: Token): OperatorKind {

switch (token) {

case Token.PLUS: return OperatorKind.PLUS;

case Token.MINUS: return OperatorKind.MINUS;

case Token.EXCLAMATION: return OperatorKind.NOT;

case Token.TILDE: return OperatorKind.BITWISE_NOT;

case Token.PLUS_PLUS: return OperatorKind.PREFIX_INC;

case Token.MINUS_MINUS: return OperatorKind.PREFIX_DEC;

}

return OperatorKind.INVALID;

}

/** Converts a unary postfix operator token to the respective operator kind. */

export function fromUnaryPostfixToken(token: Token): OperatorKind {

switch (token) {

case Token.PLUS_PLUS: return OperatorKind.POSTFIX_INC;

case Token.MINUS_MINUS: return OperatorKind.POSTFIX_DEC;

}

return OperatorKind.INVALID;

}

/** Represents an AssemblyScript program. */

export class Program extends DiagnosticEmitter {

/** Constructs a new program, optionally inheriting parser diagnostics. */

constructor(

/** Compiler options. */

public options: Options,

/** Shared array of diagnostic messages (emitted so far). */

diagnostics: DiagnosticMessage[] | null = null

) {

super(diagnostics);

var nativeSource = new Source(SourceKind.LIBRARY_ENTRY, LIBRARY_SUBST + ".wasm", "[native code]");

this.nativeSource = nativeSource;

this.parser = new Parser(this.diagnostics, this.sources);

this.resolver = new Resolver(this);

var nativeFile = new File(this, nativeSource);

this.nativeFile = nativeFile;

this.filesByName.set(nativeFile.internalName, nativeFile);

}

/** Parser instance. */

parser: Parser;

/** Resolver instance. */

resolver!: Resolver;

/** Array of sources. */

sources: Source[] = [];

/** Diagnostic offset used where successively obtaining the next diagnostic. */

diagnosticsOffset: i32 = 0;

/** Special native code source. */

nativeSource: Source;

/** Special native code range. */

get nativeRange(): Range { return this.nativeSource.range; }

/** Special native code file. */

nativeFile!: File;

/** Next class id. */

nextClassId: u32 = 0;

/** Next signature id. */

nextSignatureId: i32 = 0;

/** An indicator if the program has been initialized. */

initialized: bool = false;

// Lookup maps

/** Files by unique internal name. */

filesByName: Map<string,File> = new Map();

/** Elements by unique internal name in element space. */

elementsByName: Map<string,Element> = new Map();

/** Elements by declaration. */

elementsByDeclaration: Map<DeclarationStatement,DeclaredElement> = new Map();

/** Element instances by unique internal name. */

instancesByName: Map<string,Element> = new Map();

/** Classes wrapping basic types like `i32`. */

wrapperClasses: Map<Type,Class> = new Map();

/** Managed classes contained in the program, by id. */

managedClasses: Map<i32,Class> = new Map();

/** A set of unique function signatures contained in the program, by id. */

uniqueSignatures: Signature[] = new Array<Signature>(0);

// Standard library

/** Gets the standard `ArrayBufferView` instance. */

get arrayBufferViewInstance(): Class {

var cached = this._arrayBufferViewInstance;

if (!cached) this._arrayBufferViewInstance = cached = this.requireClass(CommonNames.ArrayBufferView);

return cached;

}

private _arrayBufferViewInstance: Class | null = null;

/** Gets the standard `ArrayBuffer` instance. */

get arrayBufferInstance(): Class {

var cached = this._arrayBufferInstance;

if (!cached) this._arrayBufferInstance = cached = this.requireClass(CommonNames.ArrayBuffer);

return cached;

}

private _arrayBufferInstance: Class | null = null;

/** Gets the standard `Array` prototype. */

get arrayPrototype(): ClassPrototype {

var cached = this._arrayPrototype;

if (!cached) this._arrayPrototype = cached = <ClassPrototype>this.require(CommonNames.Array, ElementKind.CLASS_PROTOTYPE);

return cached;

}

private _arrayPrototype: ClassPrototype | null = null;

/** Gets the standard `StaticArray` prototype. */

get staticArrayPrototype(): ClassPrototype {

var cached = this._staticArrayPrototype;

if (!cached) this._staticArrayPrototype = cached = <ClassPrototype>this.require(CommonNames.StaticArray, ElementKind.CLASS_PROTOTYPE);

return cached;

}

private _staticArrayPrototype: ClassPrototype | null = null;

/** Gets the standard `Set` prototype. */

get setPrototype(): ClassPrototype {

var cached = this._setPrototype;

if (!cached) this._setPrototype = cached = <ClassPrototype>this.require(CommonNames.Set, ElementKind.CLASS_PROTOTYPE);

return cached;

}

private _setPrototype: ClassPrototype | null = null;

/** Gets the standard `Map` prototype. */

get mapPrototype(): ClassPrototype {

var cached = this._mapPrototype;

if (!cached) this._mapPrototype = cached = <ClassPrototype>this.require(CommonNames.Map, ElementKind.CLASS_PROTOTYPE);

return cached;

}

private _mapPrototype: ClassPrototype | null = null;

/** Gets the standard `Function` prototype. */

get functionPrototype(): ClassPrototype {

var cached = this._functionPrototype;

if (!cached) this._functionPrototype = cached = <ClassPrototype>this.require(CommonNames.Function, ElementKind.CLASS_PROTOTYPE);

return cached;

}

private _functionPrototype: ClassPrototype | null = null;

/** Gets the standard `Int8Array` prototype. */

get int8ArrayPrototype(): ClassPrototype {

var cached = this._int8ArrayPrototype;

if (!cached) this._int8ArrayPrototype = cached = <ClassPrototype>this.require(CommonNames.Int8Array, ElementKind.CLASS_PROTOTYPE);

return cached;

}

private _int8ArrayPrototype: ClassPrototype | null = null;

/** Gets the standard `Int16Array` prototype. */

get int16ArrayPrototype(): ClassPrototype {

var cached = this._int16ArrayPrototype;

if (!cached) this._int16ArrayPrototype = cached = <ClassPrototype>this.require(CommonNames.Int16Array, ElementKind.CLASS_PROTOTYPE);

return cached;

}

private _int16ArrayPrototype: ClassPrototype | null = null;

/** Gets the standard `Int32Array` prototype. */

get int32ArrayPrototype(): ClassPrototype {

var cached = this._int32ArrayPrototype;

if (!cached) this._int32ArrayPrototype = cached = <ClassPrototype>this.require(CommonNames.Int32Array, ElementKind.CLASS_PROTOTYPE);

return cached;

}

private _int32ArrayPrototype: ClassPrototype | null = null;

/** Gets the standard `Int64Array` prototype. */

get int64ArrayPrototype(): ClassPrototype {

var cached = this._int64ArrayPrototype;

if (!cached) this._int64ArrayPrototype = cached = <ClassPrototype>this.require(CommonNames.Int64Array, ElementKind.CLASS_PROTOTYPE);

return cached;

}

private _int64ArrayPrototype: ClassPrototype | null = null;

/** Gets the standard `Uint8Array` prototype. */

get uint8ArrayPrototype(): ClassPrototype {

var cached = this._uint8ArrayPrototype;

if (!cached) this._uint8ArrayPrototype = cached = <ClassPrototype>this.require(CommonNames.Uint8Array, ElementKind.CLASS_PROTOTYPE);

return cached;

}

private _uint8ArrayPrototype: ClassPrototype | null = null;

/** Gets the standard `Uint8ClampedArray` prototype. */

get uint8ClampedArrayPrototype(): ClassPrototype {

var cached = this._uint8ClampedArrayPrototype;

if (!cached) this._uint8ClampedArrayPrototype = cached = <ClassPrototype>this.require(CommonNames.Uint8ClampedArray, ElementKind.CLASS_PROTOTYPE);

return cached;

}

private _uint8ClampedArrayPrototype: ClassPrototype | null = null;

/** Gets the standard `Uint16Array` prototype. */

get uint16ArrayPrototype(): ClassPrototype {

var cached = this._uint16ArrayPrototype;

if (!cached) this._uint16ArrayPrototype = cached = <ClassPrototype>this.require(CommonNames.Uint16Array, ElementKind.CLASS_PROTOTYPE);

return cached;

}

private _uint16ArrayPrototype: ClassPrototype | null = null;

/** Gets the standard `Uint32Array` prototype. */

get uint32ArrayPrototype(): ClassPrototype {

var cached = this._uint32ArrayPrototype;

if (!cached) this._uint32ArrayPrototype = cached = <ClassPrototype>this.require(CommonNames.Uint32Array, ElementKind.CLASS_PROTOTYPE);

return cached;

}

private _uint32ArrayPrototype: ClassPrototype | null = null;

/** Gets the standard `Uint64Array` prototype. */

get uint64ArrayPrototype(): ClassPrototype {

var cached = this._uint64ArrayPrototype;

if (!cached) this._uint64ArrayPrototype = cached = <ClassPrototype>this.require(CommonNames.Uint64Array, ElementKind.CLASS_PROTOTYPE);

return cached;

}

private _uint64ArrayPrototype: ClassPrototype | null = null;

/** Gets the standard `Float32Array` prototype. */

get float32ArrayPrototype(): ClassPrototype {

var cached = this._float32ArrayPrototype;

if (!cached) this._float32ArrayPrototype = cached = <ClassPrototype>this.require(CommonNames.Float32Array, ElementKind.CLASS_PROTOTYPE);

return cached;

}

private _float32ArrayPrototype: ClassPrototype | null = null;

/** Gets the standard `Float64Array` prototype. */

get float64ArrayPrototype(): ClassPrototype {

var cached = this._float64ArrayPrototype;

if (!cached) this._float64ArrayPrototype = cached = <ClassPrototype>this.require(CommonNames.Float64Array, ElementKind.CLASS_PROTOTYPE);

return cached;

}

private _float64ArrayPrototype: ClassPrototype | null = null;

/** Gets the standard `String` instance. */

get stringInstance(): Class {

var cached = this._stringInstance;

if (!cached) this._stringInstance = cached = this.requireClass(CommonNames.String);

return cached;

}

private _stringInstance: Class | null = null;

/** Gets the standard `Object` instance. */

get objectInstance(): Class {

var cached = this._objectInstance;

if (!cached) this._objectInstance = cached = this.requireClass(CommonNames.Object);

return cached;

}

private _objectInstance: Class | null = null;

/** Gets the standard `TemplateStringsArray` instance. */

get templateStringsArrayInstance(): Class {

var cached = this._templateStringsArrayInstance;

if (!cached) this._templateStringsArrayInstance = cached = this.requireClass(CommonNames.TemplateStringsArray);

return cached;

}

private _templateStringsArrayInstance: Class | null = null;

/** Gets the standard `abort` instance, if not explicitly disabled. */

get abortInstance(): Function | null {

var prototype = this.lookup(CommonNames.abort);

if (!prototype || prototype.kind != ElementKind.FUNCTION_PROTOTYPE) return null;

return this.resolver.resolveFunction(<FunctionPrototype>prototype, null);

}

// Runtime interface

/** Gets the runtime `__alloc(size: usize): usize` instance. */

get allocInstance(): Function {

var cached = this._allocInstance;

if (!cached) this._allocInstance = cached = this.requireFunction(CommonNames.alloc);

return cached;

}

private _allocInstance: Function | null = null;

/** Gets the runtime `__realloc(ptr: usize, newSize: usize): usize` instance. */

get reallocInstance(): Function {

var cached = this._reallocInstance;

if (!cached) this._reallocInstance = cached = this.requireFunction(CommonNames.realloc);

return cached;

}

private _reallocInstance: Function | null = null;

/** Gets the runtime `__free(ptr: usize): void` instance. */

get freeInstance(): Function {

var cached = this._freeInstance;

if (!cached) this._freeInstance = cached = this.requireFunction(CommonNames.free);

return cached;

}

private _freeInstance: Function | null = null;

/** Gets the runtime `__new(size: usize, id: u32): usize` instance. */

get newInstance(): Function {

var cached = this._newInstance;

if (!cached) this._newInstance = cached = this.requireFunction(CommonNames.new_);

return cached;

}

private _newInstance: Function | null = null;

/** Gets the runtime `__renew(ptr: usize, size: usize): usize` instance. */

get renewInstance(): Function {

var cached = this._renewInstance;

if (!cached) this._renewInstance = cached = this.requireFunction(CommonNames.renew);

return cached;

}

private _renewInstance: Function | null = null;

/** Gets the runtime `__link(parentPtr: usize, childPtr: usize, expectMultiple: bool): void` instance. */

get linkInstance(): Function {

var cached = this._linkInstance;

if (!cached) this._linkInstance = cached = this.requireFunction(CommonNames.link);

return cached;

}

private _linkInstance: Function | null = null;

/** Gets the runtime `__collect(): void` instance. */

get collectInstance(): Function {

var cached = this._collectInstance;

if (!cached) this._collectInstance = cached = this.requireFunction(CommonNames.collect);

return cached;

}

private _collectInstance: Function | null = null;

/** Gets the runtime `__visit(ptr: usize, cookie: u32): void` instance. */

get visitInstance(): Function {

var cached = this._visitInstance;

if (!cached) this._visitInstance = cached = this.requireFunction(CommonNames.visit);

return cached;

}

private _visitInstance: Function | null = null;

/** Gets the runtime `__typeinfo(id: u32): RTTIFlags` instance. */

get typeinfoInstance(): Function {

var cached = this._typeinfoInstance;

if (!cached) this._typeinfoInstance = cached = this.requireFunction(CommonNames.typeinfo);

return cached;

}

private _typeinfoInstance: Function | null = null;

/** Gets the runtime `__instanceof(ptr: usize, superId: u32): bool` instance. */

get instanceofInstance(): Function {

var cached = this._instanceofInstance;

if (!cached) this._instanceofInstance = cached = this.requireFunction(CommonNames.instanceof_);

return cached;

}

private _instanceofInstance: Function | null = null;

/** Gets the runtime `__newBuffer(size: usize, id: u32, data: usize = 0): usize` instance. */

get newBufferInstance(): Function {

var cached = this._newBufferInstance;

if (!cached) this._newBufferInstance = cached = this.requireFunction(CommonNames.newBuffer);

return cached;

}

private _newBufferInstance: Function | null = null;

/** Gets the runtime `__newArray(length: i32, alignLog2: usize, id: u32, data: usize = 0): usize` instance. */

get newArrayInstance(): Function {

var cached = this._newArrayInstance;

if (!cached) this._newArrayInstance = cached = this.requireFunction(CommonNames.newArray);

return cached;

}

private _newArrayInstance: Function | null = null;

/** Gets the runtime's internal `BLOCK` instance. */

get BLOCKInstance(): Class {

var cached = this._BLOCKInstance;

if (!cached) this._BLOCKInstance = cached = this.requireClass(CommonNames.BLOCK);

return cached;

}

private _BLOCKInstance: Class | null = null;

/** Gets the runtime's internal `OBJECT` instance. */

get OBJECTInstance(): Class {

var cached = this._OBJECTInstance;

if (!cached) this._OBJECTInstance = cached = this.requireClass(CommonNames.OBJECT);

return cached;

}

private _OBJECTInstance: Class | null = null;

// Utility

/** Tests whether this is a WASI program. */

get isWasi(): bool {

return this.elementsByName.has(CommonNames.ASC_WASI);

}

/** Obtains the source matching the specified internal path. */

getSource(internalPath: string): string | null {

var sources = this.sources;

for (let i = 0; i < sources.length; ++i) {

let source = sources[i];

if (source.internalPath == internalPath) return source.text;

}

return null;

}

/** Gets the overhead of a memory manager block. */

get blockOverhead(): i32 {

// BLOCK | data...

// ^ 16b alignment

return this.BLOCKInstance.nextMemoryOffset;

}

/** Gets the overhead of a managed object, excl. block overhead, incl. alignment. */

get objectOverhead(): i32 {

// OBJECT+align | data...

// └ 0 ┘ ^ 16b alignment

return (this.OBJECTInstance.nextMemoryOffset - this.blockOverhead + AL_MASK) & ~AL_MASK;

}

/** Gets the total overhead of a managed object, incl. block overhead. */

get totalOverhead(): i32 {

// BLOCK | OBJECT+align | data...

// └ = TOTAL ┘ ^ 16b alignment

return this.blockOverhead + this.objectOverhead;

}

/** Computes the next properly aligned offset of a memory manager block, given the current bump offset. */

computeBlockStart(currentOffset: i32): i32 {

var blockOverhead = this.blockOverhead;

return ((currentOffset + blockOverhead + AL_MASK) & ~AL_MASK) - blockOverhead;

}

/** Computes the next properly aligned offset of a memory manager block, given the current bump offset. */

computeBlockStart64(currentOffset: i64): i64 {

var blockOverhead = i64_new(this.blockOverhead);

return i64_sub(i64_align(i64_add(currentOffset, blockOverhead), AL_SIZE), blockOverhead);

}

/** Computes the size of a memory manager block, excl. block overhead. */

computeBlockSize(payloadSize: i32, isManaged: bool): i32 {

// see: std/rt/tlsf.ts, computeSize; becomes mmInfo

if (isManaged) payloadSize += this.objectOverhead;

// we know that payload must be aligned, and that block sizes must be chosen

// so that blocks are adjacent with the next payload aligned. hence, block

// size is payloadSize rounded up to where the next block would start:

var blockSize = this.computeBlockStart(payloadSize);

// make sure that block size is valid according to TLSF requirements

var blockOverhead = this.blockOverhead;

var blockMinsize = ((3 * this.options.usizeType.byteSize + blockOverhead + AL_MASK) & ~AL_MASK) - blockOverhead;

if (blockSize < blockMinsize) blockSize = blockMinsize;

const blockMaxsize = 1 << 30; // 1 << (FL_BITS + SB_BITS - 1), exclusive

const tagsMask = 3;

if (blockSize >= blockMaxsize || (blockSize & tagsMask) != 0) {

throw new Error("invalid block size");

}

return blockSize;

}

/** Creates a native variable declaration. */

makeNativeVariableDeclaration(

/** The simple name of the variable */

/** Flags indicating specific traits, e.g. `CONST`. */

flags: CommonFlags = CommonFlags.NONE

): VariableDeclaration {

var range = this.nativeSource.range;

return Node.createVariableDeclaration(

Node.createIdentifierExpression(name, range),

null, flags, null, null, range

);

}

/** Creates a native type declaration. */

makeNativeTypeDeclaration(

/** The simple name of the type. */

/** Flags indicating specific traits, e.g. `GENERIC`. */

flags: CommonFlags = CommonFlags.NONE

): TypeDeclaration {

var range = this.nativeSource.range;

var identifier = Node.createIdentifierExpression(name, range);

return Node.createTypeDeclaration(

identifier,

null, flags, null,

Node.createOmittedType(range),

range

);

}

// a dummy signature for programmatically generated native functions

private nativeDummySignature: FunctionTypeNode | null = null;

/** Creates a native function declaration. */

makeNativeFunctionDeclaration(

/** The simple name of the function. */

/** Flags indicating specific traits, e.g. `DECLARE`. */

flags: CommonFlags = CommonFlags.NONE

): FunctionDeclaration {

var range = this.nativeSource.range;

var signature = this.nativeDummySignature;

if (!signature) {

this.nativeDummySignature = signature = Node.createFunctionType([],

Node.createNamedType( // ^ AST signature doesn't really matter, is overridden anyway

Node.createSimpleTypeName(CommonNames.void_, range),

null, false, range

);

}

return Node.createFunctionDeclaration(

Node.createIdentifierExpression(name, range),

null, flags, null, signature, null, ArrowKind.NONE, range

);

}

/** Creates a native namespace declaration. */

makeNativeNamespaceDeclaration(

/** The simple name of the namespace. */

/** Flags indicating specific traits, e.g. `EXPORT`. */

flags: CommonFlags = CommonFlags.NONE

): NamespaceDeclaration {

var range = this.nativeSource.range;

return Node.createNamespaceDeclaration(

Node.createIdentifierExpression(name, range),

null, flags, [], range

);

}

/** Creates a native function. */

makeNativeFunction(

/** The simple name of the function. */

/** Concrete function signature. */

signature: Signature,

/** Parent element, usually a file, class or namespace. */

parent: Element = this.nativeFile,

/** Flags indicating specific traits, e.g. `GENERIC`. */

flags: CommonFlags = CommonFlags.NONE,

/** Decorator flags representing built-in decorators. */

decoratorFlags: DecoratorFlags = DecoratorFlags.NONE

): Function {

return new Function(

name,

new FunctionPrototype(

name,

parent,

this.makeNativeFunctionDeclaration(name, flags),

decoratorFlags

null,

signature

);

}

/** Gets the (possibly merged) program element linked to the specified declaration. */

getElementByDeclaration(declaration: DeclarationStatement): DeclaredElement | null {

var elementsByDeclaration = this.elementsByDeclaration;

return elementsByDeclaration.has(declaration)

? assert(elementsByDeclaration.get(declaration))

: null;

}

/** Initializes the program and its elements prior to compilation. */

initialize(): void {

if (this.initialized) return;

this.initialized = true;

var options = this.options;

// register native types

this.registerNativeType(CommonNames.i8, Type.i8);

this.registerNativeType(CommonNames.i16, Type.i16);

this.registerNativeType(CommonNames.i32, Type.i32);

this.registerNativeType(CommonNames.i64, Type.i64);

this.registerNativeType(CommonNames.isize, options.isizeType);

this.registerNativeType(CommonNames.u8, Type.u8);

this.registerNativeType(CommonNames.u16, Type.u16);

this.registerNativeType(CommonNames.u32, Type.u32);

this.registerNativeType(CommonNames.u64, Type.u64);

this.registerNativeType(CommonNames.usize, options.usizeType);

this.registerNativeType(CommonNames.bool, Type.bool);

this.registerNativeType(CommonNames.f32, Type.f32);

this.registerNativeType(CommonNames.f64, Type.f64);

this.registerNativeType(CommonNames.void_, Type.void);

this.registerNativeType(CommonNames.number, Type.f64); // alias

this.registerNativeType(CommonNames.boolean, Type.bool); // alias

this.nativeFile.add(CommonNames.native, new TypeDefinition(

CommonNames.native,

this.nativeFile,

this.makeNativeTypeDeclaration(CommonNames.native, CommonFlags.EXPORT | CommonFlags.GENERIC),

DecoratorFlags.BUILTIN

));

this.nativeFile.add(CommonNames.indexof, new TypeDefinition(

CommonNames.indexof,

this.nativeFile,

this.makeNativeTypeDeclaration(CommonNames.indexof, CommonFlags.EXPORT | CommonFlags.GENERIC),

DecoratorFlags.BUILTIN

));

this.nativeFile.add(CommonNames.valueof, new TypeDefinition(

CommonNames.valueof,

this.nativeFile,

this.makeNativeTypeDeclaration(CommonNames.valueof, CommonFlags.EXPORT | CommonFlags.GENERIC),

DecoratorFlags.BUILTIN

));

this.nativeFile.add(CommonNames.returnof, new TypeDefinition(

CommonNames.returnof,

this.nativeFile,

this.makeNativeTypeDeclaration(CommonNames.returnof, CommonFlags.EXPORT | CommonFlags.GENERIC),

DecoratorFlags.BUILTIN

));

this.nativeFile.add(CommonNames.nonnull, new TypeDefinition(

CommonNames.nonnull,

this.nativeFile,

this.makeNativeTypeDeclaration(CommonNames.nonnull, CommonFlags.EXPORT | CommonFlags.GENERIC),

DecoratorFlags.BUILTIN

));

View remainder of file in raw view

assemblyscript/src/program.ts at main · deep-stack/assemblyscript · GitHub

Navigation Menu

Uh oh!

assemblyscript/src/program.ts at main · deep-stack/assemblyscript · GitHub

Navigation Menu

Uh oh!

Expand file tree

Breadcrumbs

program.ts

Latest commit

History

Breadcrumbs

program.ts

File metadata and controls

Footer

Footer navigation