luaffi/test.lua at master · bin601/luaffi · GitHub

History

871 lines (754 loc) · 25.4 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

-- vim: ts=4 sw=4 sts=4 et tw=78

io.stdout:setvbuf('no')

local ffi = require 'ffi'

local dlls = {}

dlls.__cdecl = ffi.load('test_cdecl')

if ffi.arch == 'x86' and ffi.os == 'Windows' then

dlls.__stdcall = ffi.load('test_stdcall')

dlls.__fastcall = ffi.load('test_fastcall')

end

local function check(a, b)

if a ~= b then

print('check', a, b)

end

return _G.assert(a == b)

end

print('Running test')

ffi.cdef [[

enum e8 {

FOO8,

BAR8,

};

enum e16 {

FOO16 = 1 << 8,

BAR16,

BIG16 = 1 << 14,

};

enum e32 {

FOO32 = 1 << 16,

BAR32,

BIG32 = 1 << 30,

};

int max_alignment();

bool is_msvc, is_msvc2 __asm__("is_msvc");

bool have_complex(void);

bool have_complex2() __asm__("have" /*foo*/ "\x5F" "complex"); // 5F is _

int8_t add_i8(int8_t a, int8_t b);

uint8_t add_u8(uint8_t a, uint8_t b);

int16_t add_i16(int16_t a, int16_t b);

uint16_t add_i16(uint16_t a, uint16_t b);

int32_t add_i32(int32_t a, int32_t b);

uint32_t add_u32(uint32_t a, uint32_t b);

int64_t add_i64(int64_t a, int64_t b);

uint64_t add_u64(uint64_t a, uint64_t b);

double add_d(double a, double b);

float add_f(float a, float b);

double complex add_dc(double complex a, double complex b);

float complex add_fc(float complex a, float complex b);

enum e8 inc_e8(enum e8);

enum e16 inc_e16(enum e16);

enum e32 inc_e32(enum e32);

bool not_b(bool v);

_Bool not_b2(_Bool v);

typedef bool (*fp)(bool);

fp ret_fp(fp v);

bool (*ret_fp2(bool (*)(bool)))(bool) __asm("ret_fp");

int print_i8(char* buf, int8_t val);

int print_u8(char* buf, uint8_t val);

int print_i16(char* buf, int16_t val);

int print_u16(char* buf, uint16_t val);

int print_i32(char* buf, int32_t val);

int print_u32(char* buf, uint32_t val);

int print_i64(char* buf, int64_t val);

int print_u64(char* buf, uint64_t val);

int print_s(char* buf, const char* val);

int print_b(char* buf, bool val);

int print_b2(char* buf, _Bool val);

int print_d(char* buf, double val);

int print_f(char* buf, float val);

int print_p(char* buf, void* val);

int print_dc(char* buf, double complex val);

int print_fc(char* buf, float complex val);

int print_e8(char* buf, enum e8 val);

int print_e16(char* buf, enum e16 val);

int print_e32(char* buf, enum e32 val);

int sprintf(char* buf, const char* format, ...);

// Examples from MSDN

// bit_fields1.cpp

// compile with: /LD

struct Date {

unsigned short nWeekDay : 3; // 0..7 (3 bits)

unsigned short nMonthDay : 6; // 0..31 (6 bits)

unsigned short nMonth : 5; // 0..12 (5 bits)

unsigned short nYear : 8; // 0..100 (8 bits)

};

// bit_fields2.cpp

// compile with: /LD

struct Date2 {

unsigned nWeekDay : 3; // 0..7 (3 bits)

unsigned nMonthDay : 6; // 0..31 (6 bits)

unsigned : 0; // Force alignment to next boundary.

unsigned nMonth : 5; // 0..12 (5 bits)

unsigned nYear : 8; // 0..100 (8 bits)

};

// For checking the alignment of short bitfields

struct Date3 {

char pad;

unsigned short nWeekDay : 3; // 0..7 (3 bits)

unsigned short nMonthDay : 6; // 0..31 (6 bits)

unsigned short nMonth : 5; // 0..12 (5 bits)

unsigned short nYear : 8; // 0..100 (8 bits)

};

// For checking the alignment and container of int64 bitfields

struct bit64 {

char pad;

uint64_t a : 15;

uint64_t b : 14;

uint64_t c : 13;

uint64_t d : 12;

};

// Examples from SysV X86 ABI

struct sysv1 {

int j:5;

int k:6;

int m:7;

};

struct sysv2 {

short s:9;

int j:9;

char c;

short t:9;

short u:9;

char d;

};

struct sysv3 {

char c;

short s:8;

};

union sysv4 {

char c;

short s:8;

};

struct sysv5 {

char c;

int :0;

char d;

short :9;

char e;

char :0;

};

struct sysv6 {

char c;

int :0;

char d;

int :9;

char e;

};

struct sysv7 {

int j:9;

short s:9;

char c;

short t:9;

short u:9;

};

int print_date(size_t* sz, size_t* align, char* buf, struct Date* s);

int print_date2(size_t* sz, size_t* align, char* buf, struct Date2* s);

int print_date3(size_t* sz, size_t* align, char* buf, struct Date3* d);

int print_bit64(size_t* sz, size_t* align, char* buf, struct bit64* d);

int print_sysv1(size_t* sz, size_t* align, char* buf, struct sysv1* s);

int print_sysv2(size_t* sz, size_t* align, char* buf, struct sysv2* s);

int print_sysv3(size_t* sz, size_t* align, char* buf, struct sysv3* s);

int print_sysv4(size_t* sz, size_t* align, char* buf, union sysv4* s);

int print_sysv5(size_t* sz, size_t* align, char* buf, struct sysv5* s);

int print_sysv6(size_t* sz, size_t* align, char* buf, struct sysv6* s);

int print_sysv7(size_t* sz, size_t* align, char* buf, struct sysv7* s);

struct fptr {

int (__cdecl *p)(int);

};

int call_fptr(struct fptr* s, int val);

bool g_b;

int8_t g_i8;

int16_t g_i16;

int32_t g_i32;

int64_t g_i64;

uint8_t g_u8;

uint16_t g_u16;

uint32_t g_u32;

uint64_t g_u64;

float g_f;

double g_d;

double complex g_dc;

float complex g_fc;

bool (*g_fp)(bool);

const char g_s[];

const char* g_sp;

void* g_p;

enum e8 g_e8;

enum e16 g_e16;

enum e32 g_e32;

struct Date g_date;

void set_errno(int val);

int get_errno(void);

]]

local align = [[

struct align_ALIGN_SUFFIX {

char pad;

TYPE v;

};

int print_align_ALIGN_SUFFIX(char* buf, struct align_ALIGN_SUFFIX* p);

]]

local palign = [[

#pragma pack(push)

#pragma pack(ALIGN)

]] .. align .. [[

#pragma pack(pop)

]]

local bitfields = [[

struct bcTNUM {

uintTNUM_t a : 3;

intTNUM_t b : 3;

};

struct blzTNUM {

uintTNUM_t a;

uintTNUM_t :0;

uintTNUM_t b;

};

int print_bcTNUM(size_t* sz, size_t* align, char* buf, struct bcTNUM* s);

int print_blzTNUM(size_t* sz, size_t* align, char* buf, struct blzTNUM* s);

]]

local bitalign = [[

struct ba_TNUM_BNUM {

char a;

uintTNUM_t b : BNUM;

};

struct bu_TNUM_BNUM {

char a;

uintTNUM_t :BNUM;

char b;

};

int print_ba_TNUM_BNUM(size_t* sz, size_t* align, char* buf, struct ba_TNUM_BNUM* s);

]]

local bitzero = [[

struct bz_TNUM_ZNUM_BNUM {

uint8_t a;

uintTNUM_t b : 3;

uintZNUM_t :BNUM;

uintTNUM_t c : 3;

};

int print_bz_TNUM_ZNUM_BNUM(size_t* sz, size_t* align, char* buf, struct bz_TNUM_ZNUM_BNUM* s);

]]

local i = ffi.C.i

local test_values = {

['void*'] = ffi.new('char[3]'),

['const char*'] = 'foo',

float = 3.4,

double = 5.6,

uint16_t = 65000,

uint32_t = ffi.new('uint32_t', 700000056),

uint64_t = 12345678901234,

bool = true,

_Bool = false,

['float complex'] = 3+4*i,

['double complex'] = 5+6*i,

['enum e8'] = ffi.C.FOO8,

['enum e16'] = ffi.C.FOO16,

['enum e32'] = ffi.C.FOO32,

}

local types = {

b = 'bool',

b2 = '_Bool',

d = 'double',

f = 'float',

u64 = 'uint64_t',

u32 = 'uint32_t',

u16 = 'uint16_t',

s = 'const char*',

p = 'void*',

e8 = 'enum e8',

e16 = 'enum e16',

e32 = 'enum e32',

}

local buf = ffi.new('char[256]')

local function checkbuf(type, ret)

local str = tostring(test_values[type]):gsub('^cdata%b<>: ', '')

check(ffi.string(buf), str)

check(ret, #str)

end

local function checkalign(type, v, ret)

--print(v)

local str = tostring(test_values[type]):gsub('^cdata%b<>: ', '')

check(ffi.string(buf), ('size %d offset %d align %d value %s'):format(ffi.sizeof(v), ffi.offsetof(v, 'v'), ffi.alignof(v, 'v'), str))

check(ret, #str)

end

local u64 = ffi.typeof('uint64_t')

local i64 = ffi.typeof('int64_t')

local first = true

for convention,c in pairs(dlls) do

check(c.add_i8(1,1), 2)

check(c.add_i8(256,1), 1)

check(c.add_i8(127,1), -128)

check(c.add_i8(-120,120), 0)

check(c.add_u8(255,1), 0)

check(c.add_u8(120,120), 240)

check(c.add_i16(2000,4000), 6000)

check(c.add_d(20, 12), 32)

check(c.add_f(40, 32), 72)

check(c.not_b(true), false)

check(c.not_b2(false), true)

check(c.inc_e8(c.FOO8), c.BAR8)

check(c.inc_e8('FOO8'), c.BAR8)

check(c.inc_e16(c.FOO16), c.BAR16)

check(c.inc_e32(c.FOO32), c.BAR32)

check(c.ret_fp(c.g_fp), c.g_fp)

check(c.ret_fp2(c.g_fp), c.g_fp)

if c.have_complex() then

check(c.add_dc(3+4*i, 4+5*i), 7+9*i)

check(c.add_fc(2+4*i, 6+8*i), 8+12*i)

types.dc = 'double complex'

types.fc = 'float complex'

else

types.dc = nil

types.fc = nil

end

check((3+4*i).re, 3)

check((3+4*i).im, 4)

check(ffi.new('complex float', 2+8*i).re, 2)

check(ffi.new('complex float', 5+6*i).im, 6)

check(c.have_complex(), c.have_complex2())

check(c.is_msvc, c.is_msvc2)

check(c.g_b, true)

check(c.g_i8, -8)

check(c.g_i16, -16)

check(c.g_i32, -32)

check(c.g_i64, i64(-64))

check(c.g_u8, 8)

check(c.g_u16, 16)

check(c.g_u32, 32)

check(c.g_u64, u64(64))

check(c.g_f, 3)

check(c.g_d, 5)

if c.have_complex() then

check(c.g_dc, 7 + 8*i)

check(c.g_fc, 6 + 9*i)

end

check(ffi.cast('void*', c.g_fp), c.g_p)

check(c.g_s, 'g_s')

check(c.g_sp, 'g_sp')

check(c.g_e8, c.FOO8)

check(c.g_e16, c.FOO16)

check(c.g_e32, c.FOO32)

check(c.g_date.nWeekDay, 1)

check(c.g_date.nMonthDay, 2)

check(c.g_date.nMonth, 3)

check(c.g_date.nYear, 4)

c.g_b = false; check(c.g_b, false)

c.g_i8 = -108; check(c.g_i8, -108)

c.g_i16 = -1016; check(c.g_i16, -1016)

c.g_i32 = -1032; check(c.g_i32, -1032)

c.g_i64 = -1064; check(c.g_i64, i64(-1064))

c.g_u8 = 208; check(c.g_u8, 208)

c.g_u16 = 2016; check(c.g_u16, 2016)

c.g_u32 = 2032; check(c.g_u32, 2032)

c.g_u64 = 2064; check(c.g_u64, u64(2064))

c.g_f = 13; check(c.g_f, 13)

c.g_d = 15; check(c.g_d, 15)

if c.have_complex() then

c.g_dc = 17+18*i; check(c.g_dc, 17+18*i)

c.g_fc = 16+19*i; check(c.g_fc, 16+19*i)

end

c.g_sp = 'foo'; check(c.g_sp, 'foo')

c.g_e8 = c.BAR8; check(c.g_e8, c.BAR8)

c.g_e16 = c.BAR16; check(c.g_e16, c.BAR16)

c.g_e32 = c.BAR32; check(c.g_e32, c.BAR32)

c.g_date.nWeekDay = 3; check(c.g_date.nWeekDay, 3)

local align_attr = c.is_msvc and [[

struct align_attr_ALIGN_SUFFIX {

char pad;

__declspec(align(ALIGN)) TYPE v;

};

int print_align_attr_ALIGN_SUFFIX(char* buf, struct align_attr_ALIGN_SUFFIX* p);

]] or [[

struct align_attr_ALIGN_SUFFIX {

char pad;

TYPE v __attribute__(aligned(ALIGN));

};

int print_align_attr_ALIGN_SUFFIX(char* buf, struct align_attr_ALIGN_SUFFIX* p);

]]

for suffix, type in pairs(types) do

local test = test_values[type]

--print('checkbuf', suffix, type, buf, test)

checkbuf(type, c['print_' .. suffix](buf, test))

if first then

ffi.cdef(align:gsub('SUFFIX', suffix):gsub('TYPE', type):gsub('ALIGN', 0))

end

local v = ffi.new('struct align_0_' .. suffix, {0, test})

checkalign(type, v, c['print_align_0_' .. suffix](buf, v))

for _,align in ipairs{1,2,4,8,16} do

if align > c.max_alignment() then

break

end

if first then

ffi.cdef(palign:gsub('SUFFIX', suffix):gsub('TYPE', type):gsub('ALIGN', align))

ffi.cdef(align_attr:gsub('SUFFIX', suffix):gsub('TYPE', type):gsub('ALIGN', align))

end

local v = ffi.new('struct align_' .. align .. '_' .. suffix, {0, test})

checkalign(type, v, c['print_align_' .. align .. '_' .. suffix](buf, v))

-- MSVC doesn't support aligned attributes on enums

if not type:match('^enum e[0-9]*$') or not c.is_msvc then

local v2 = ffi.new('struct align_attr_' .. align .. '_' .. suffix, {0, test})

checkalign(type, v2, c['print_align_attr_' .. align .. '_' .. suffix](buf, v2))

end

if not c.is_msvc then

if first then

local h = [[

struct align_attr_def_SUFFIX {

char pad;

TYPE v __attribute__(aligned);

};

int print_align_attr_def_SUFFIX(char* buf, struct align_attr_def_SUFFIX* p);

]]

ffi.cdef(h:gsub('SUFFIX', suffix):gsub('TYPE', type))

end

local v = ffi.new('struct align_attr_def_' .. suffix, {0, test})

checkalign(type, v, c['print_align_attr_def_' .. suffix](buf, v))

end

local psz = ffi.new('size_t[1]')

local palign = ffi.new('size_t[1]')

local function check_align(type, test, ret)

--print('check_align', type, test, ret, ffi.string(buf), psz[0], palign[0])

check(tonumber(palign[0]), ffi.alignof(type))

check(tonumber(psz[0]), ffi.sizeof(type))

check(ret, #test)

check(test, ffi.string(buf))

end

for _, tnum in ipairs{8, 16, 32, 64} do

if first then

ffi.cdef(bitfields:gsub('TNUM',tnum))

end

check_align('struct bc'..tnum, '1 2', c['print_bc'..tnum](psz, palign, buf, {1,2}))

check_align('struct blz'..tnum, '1 2', c['print_blz'..tnum](psz, palign, buf, {1,2}))

for _, znum in ipairs{8, 16, 32, 64} do

for _, bnum in ipairs{7, 15, 31, 63} do

if bnum > znum then

break

end

if first then

ffi.cdef(bitzero:gsub('TNUM',tnum):gsub('ZNUM',znum):gsub('BNUM', bnum))

end

check_align('struct bz_'..tnum..'_'..znum..'_'..bnum, '1 2 3', c['print_bz_'..tnum..'_'..znum..'_'..bnum](psz, palign, buf, {1,2,3}))

end

for _, bnum in ipairs{7, 15, 31, 63} do

if bnum > tnum then

break

end

if first then

ffi.cdef(bitalign:gsub('TNUM',tnum):gsub('BNUM',bnum))

end

check_align('struct ba_'..tnum..'_'..bnum, '1 2', c['print_ba_'..tnum..'_'..bnum](psz, palign, buf, {1,2}))

end

check_align('struct Date', '1 2 3 4', c.print_date(psz, palign, buf, {1,2,3,4}))

check_align('struct Date2', '1 2 3 4', c.print_date2(psz, palign, buf, {1,2,3,4}))

check_align('struct sysv1', '1 2 3', c.print_sysv1(psz, palign, buf, {1,2,3}))

check_align('struct sysv2', '1 2 3 4 5 6', c.print_sysv2(psz, palign, buf, {1,2,3,4,5,6}))

check_align('struct sysv3', '1 2', c.print_sysv3(psz, palign, buf, {1,2}))

check_align('union sysv4', '1', c.print_sysv4(psz, palign, buf, {1}))

check_align('struct sysv5', '1 2 3', c.print_sysv5(psz, palign, buf, {1,2,3}))

check_align('struct sysv6', '1 2 3', c.print_sysv6(psz, palign, buf, {1,2,3}))

check_align('struct sysv7', '1 2 3 4 5', c.print_sysv7(psz, palign, buf, {1,2,3,4,5}))

local cbs = [[

typedef const char* (*__cdecl sfunc)(const char*);

int call_i(int (*__cdecl func)(int), int arg);

float call_f(float (*__cdecl func)(float), float arg);

double call_d(double (*__cdecl func)(double), double arg);

const char* call_s(sfunc func, const char* arg);

_Bool call_b(_Bool (*__cdecl func)(_Bool), _Bool arg);

double complex call_dc(double complex (*__cdecl func)(double complex), double complex arg);

float complex call_fc(float complex (*__cdecl func)(float complex), float complex arg);

enum e8 call_e8(enum e8 (*__cdecl func)(enum e8), enum e8 arg);

enum e16 call_e16(enum e16 (*__cdecl func)(enum e16), enum e16 arg);

enum e32 call_e32(enum e32 (*__cdecl func)(enum e32), enum e32 arg);

]]

ffi.cdef(cbs:gsub('__cdecl', convention))

local u3 = ffi.new('uint64_t', 3)

check(c.call_i(function(a) return 2*a end, 3), 6)

assert(math.abs(c.call_d(function(a) return 2*a end, 3.2) - 6.4) < 0.0000000001)

assert(math.abs(c.call_f(function(a) return 2*a end, 3.2) - 6.4) < 0.000001)

check(ffi.string(c.call_s(function(s) return s + u3 end, 'foobar')), 'bar')

check(c.call_b(function(v) return not v end, true), false)

check(c.call_e8(function(v) return v + 1 end, c.FOO8), c.BAR8)

check(c.call_e16(function(v) return v + 1 end, c.FOO16), c.BAR16)

check(c.call_e32(function(v) return v + 1 end, c.FOO32), c.BAR32)

if c.have_complex() then

check(c.call_dc(function(v) return v + 2+3*i end, 4+6*i), 6+9*i)

check(c.call_fc(function(v) return v + 1+2*i end, 7+4*i), 8+6*i)

end

local u2 = ffi.new('uint64_t', 2)

local cb = ffi.new('sfunc', function(s) return s + u3 end)

check(ffi.string(cb('foobar')), 'bar')

check(ffi.string(c.call_s(cb, 'foobar')), 'bar')

cb:set(function(s) return s + u2 end)

check(ffi.string(c.call_s(cb, 'foobar')), 'obar')

local fp = ffi.new('struct fptr')

assert(fp.p == ffi.C.NULL)

fp.p = function(a) return 2*a end

assert(fp.p ~= ffi.C.NULL)

check(c.call_fptr(fp, 4), 8)

local suc, err = pcall(function() fp.p:set(function() end) end)

assert(not suc)

check(err:gsub('^.*: ',''), "can't set the function for a non-lua callback")

check(c.call_fptr({function(a) return 3*a end}, 5), 15)

local suc, err = pcall(c.call_s, function(s) error(ffi.string(s), 0) end, 'my error')

check(suc, false)

check(err, 'my error')

check(ffi.errno(), c.get_errno())

c.set_errno(3)

check(ffi.errno(), 3)

check(c.get_errno(), 3)

check(ffi.errno(4), 3)

check(ffi.errno(), 4)

check(c.get_errno(), 4)

local gccattr = {

__cdecl = 'int test_pow(int v) __attribute__((cdecl));',

__stdcall = 'int test_pow(int v) __attribute__(stdcall);',

__fastcall = '__attribute__(fastcall) int test_pow(int v);',

}

ffi.cdef(gccattr[convention])

check(c.test_pow(5), 25)

ffi.cdef [[

int va_list_size, va_list_align;

int vsnprintf(char* buf, size_t sz, const char* fmt, va_list ap);

]]

ffi.new('va_list')

assert(ffi.debug().functions.vsnprintf ~= nil)

assert(ffi.istype('va_list', ffi.new('__builtin_va_list')))

assert(ffi.istype('va_list', ffi.new('__gnuc_va_list')))

check(ffi.sizeof('va_list'), c.va_list_size)

check(ffi.alignof('va_list'), c.va_list_align)

first = false

end

local c = ffi.C

assert(c.sprintf(buf, "%g", 5.3) == 3 and ffi.string(buf) == '5.3')

assert(c.sprintf(buf, "%d", false) == 1 and ffi.string(buf) == '0')

assert(c.sprintf(buf, "%d%g", false, 6.7) == 4 and ffi.string(buf) == '06.7')

assert(ffi.sizeof('uint32_t[?]', 32) == 32 * 4)

assert(ffi.sizeof(ffi.new('uint32_t[?]', 32)) == 32 * 4)

ffi.cdef [[

struct vls {

struct {

char a;

struct {

char b;

char v[?];

} c;

} d;

};

struct vls2 {

char pad;

union {

uint8_t a;

uint16_t b;

};

]]

assert(ffi.sizeof('struct vls', 3) == 5)

assert(ffi.sizeof(ffi.new('struct vls', 4).d.c) == 5)

assert(ffi.offsetof('struct vls2', 'a') == 2)

assert(ffi.sizeof('struct vls2') == 4)

ffi.cdef [[ static const int DUMMY = 8 << 2; ]]

assert(ffi.C.DUMMY == 32)

ffi.new('struct {const char* foo;}', {'foo'})

assert(not pcall(function()

ffi.new('struct {char* foo;}', {'ff'})

end))

local mt = {}

local vls = ffi.new(ffi.metatype('struct vls', mt), 1)

assert(not pcall(function() return vls.key end))

mt.__index = function(vls, key)

return function(vls, a, b)

return 'in index ' .. key .. ' ' .. vls.d.a .. ' ' .. a .. ' ' .. b

end

vls.d.a = 3

check(vls:key('a', 'b'), 'in index key 3 a b')

assert(not pcall(function() vls.k = 3 end))

mt.__newindex = function(vls, key, val)

error('in newindex ' .. key .. ' ' .. vls.d.a .. ' ' .. val, 0)

end

vls.d.a = 4

local suc, err = pcall(function() vls.key = 'val' end)

assert(not suc)

check(err, 'in newindex key 4 val')

mt.__add = function(vls, a) return vls.d.a + a end

mt.__sub = function(vls, a) return vls.d.a - a end

mt.__mul = function(vls, a) return vls.d.a * a end

mt.__div = function(vls, a) return vls.d.a / a end

mt.__mod = function(vls, a) return vls.d.a % a end

mt.__pow = function(vls, a) return vls.d.a ^ a end

mt.__eq = function(vls, a) return u64(vls.d.a) == a end

mt.__lt = function(vls, a) return u64(vls.d.a) < a end

mt.__le = function(vls, a) return u64(vls.d.a) <= a end

mt.__call = function(vls, a, b) return '__call', vls.d.a .. a .. (b or 'nil') end

mt.__unm = function(vls) return -vls.d.a end

mt.__concat = function(vls, a) return vls.d.a .. a end

mt.__len = function(vls) return vls.d.a end

mt.__tostring = function(vls) return 'string ' .. vls.d.a end

vls.d.a = 5

check(vls + 5, 10)

check(vls - 5, 0)

check(vls * 5, 25)

check(vls / 5, 1)

check(vls % 3, 2)

check(vls ^ 3, 125)

check(vls == u64(4), false)

check(vls == u64(5), true)

check(vls == u64(6), false)

check(vls < u64(4), false)

check(vls < u64(5), false)

check(vls < u64(6), true)

check(vls <= u64(4), false)

check(vls <= u64(5), true)

check(vls <= u64(6), true)

check(-vls, -5)

local a,b = vls('6')

check(a, '__call')

check(b, '56nil')

check(tostring(vls), 'string 5')

if _VERSION ~= 'Lua 5.1' then

check(vls .. 'str', '5str')

check(#vls, 5)

end

check(tostring(1+3*i), '1+3i')

check(tostring((1+3*i)*(2+4*i)), '-10+10i')

check(tostring((3+2*i)*(3-2*i)), '13')

-- Should ignore unknown attributes

ffi.cdef [[

typedef int ALenum;

__attribute__((dllimport)) void __attribute__((__cdecl__)) alEnable( ALenum capability );

]]

check(ffi.sizeof('struct {char foo[alignof(uint64_t)];}'), ffi.alignof('uint64_t'))

-- Long double is not supported yet but it should be parsed

ffi.cdef('long double foo(long double val);')

check(tostring(ffi.debug().functions.foo):match('ctype(%b<>)'), '<long double (*)(long double)>')

ffi.cdef [[

typedef int byte1 __attribute__(mode(QI));

typedef int byte2 __attribute__(mode(HI));

typedef int byte4 __attribute__(mode(SI));

typedef int byte8 __attribute__(mode(DI));

typedef unsigned ubyte8 __attribute__(mode(DI));

typedef int word __attribute__(mode(word));

typedef int pointer __attribute__(mode(pointer));

typedef int byte __attribute__(mode(byte));

typedef float float4 __attribute__(mode(SF));

typedef float float8 __attribute__(mode(DF));

]]

assert(ffi.istype('int8_t', ffi.new('byte1')))

assert(ffi.istype('int16_t', ffi.new('byte2')))

assert(ffi.istype('int32_t', ffi.new('byte4')))

assert(ffi.istype('int64_t', ffi.new('byte8')))

assert(ffi.istype('uint64_t', ffi.new('ubyte8')))

check(ffi.sizeof('void*'), ffi.sizeof('pointer'))

check(ffi.alignof('void*'), ffi.alignof('pointer'))

check(ffi.sizeof('void*'), ffi.sizeof('word'))

check(ffi.alignof('void*'), ffi.alignof('word'))

assert(ffi.istype('int8_t', ffi.new('byte')))

assert(ffi.istype('float', ffi.new('float4')))

assert(ffi.istype('double', ffi.new('float8')))

ffi.cdef('void register_foo(register int val);')

check(tostring(ffi.debug().functions.register_foo):match('%b<>'), '<void (*)(int)>')

ffi.cdef [[

typedef struct __sFILE FILE;

FILE *fopen(const char * , const char * ) __asm("_" "fopen" );

]]

assert(not ffi.istype('int', ffi.new('int*')))

assert(not ffi.istype('int[]', ffi.new('int*')))

assert(not ffi.istype('int[3]', ffi.new('int*')))

assert(not ffi.istype('int[3]', ffi.new('int[2]')))

assert(ffi.istype('const int[3]', ffi.new('const int[3]')))

assert(ffi.istype('int[3]', ffi.new('const int[3]')))

-- Crazy function pointer that takes an int and a function pointer and returns

-- a function pointer. Type of &signal.

check(tostring(ffi.typeof('void (*foo(int, void(*)(int)))(int)')):match('%b<>'), '<void (*(*)(int, void (*)(int)))(int)>')

-- Make sure we pass all arguments to tonumber

check(tonumber('FE', 16), 0xFE)

-- Allow casts from pointer to numeric types

ffi.cast('long', ffi.C.NULL)

ffi.cast('int8_t', ffi.C.NULL)

assert(not pcall(function() ffi.new('long', ffi.C.NULL) end))

-- ffi.new and ffi.cast allow unpacked struct/arrays

assert(ffi.new('int[3]', 1)[0] == 1)

assert(ffi.new('int[3]', {1})[0] == 1)

assert(ffi.new('int[3]', 1, 2)[1] == 2)

assert(ffi.new('int[3]', {1, 2})[1] == 2)

ffi.cdef[[

struct var {

char ch[?];

};

]]

local d = ffi.new('char[4]')

local v = ffi.cast('struct var*', d)

v.ch = {1,2,3,4}

assert(v.ch[3] == 4)

v.ch = "bar"

assert(v.ch[3] == 0)

assert(v.ch[2] == string.byte('r'))

assert(d[1] == string.byte('a'))

ffi.cast('char*', 1)

-- 2 arg form of ffi.copy

ffi.copy(d, 'bar')

-- unsigned should be ignored for pointer rules

ffi.cdef[[

int strncmp(const signed char *s1, const unsigned char *s2, size_t n);

]]

assert(ffi.C.strncmp("two", "three", 3) ~= 0)

ffi.fill(d, 3, 1)

assert(d[2] == 1)

ffi.fill(d, 3)

assert(d[2] == 0)

-- tests for __new

ffi.cdef[[

struct newtest {

int a;

int b;

int c;

};

]]

local tp = ffi.metatype("struct newtest", {__new =

function(tp, x, y, z)

tp = ffi.new(tp)

tp.a, tp.b, tp.c = x, y, z

return tp

end})

local v = tp(1, 2, 3)

assert(v.a == 1 and v.b == 2 and v.c == 3)

local tp = ffi.metatype("struct newtest", {__new =

function(tp, x, y, z)

tp = ffi.new(tp, {a = x, b = y, c = z})

return tp

end})

local v = tp(1, 2, 3)

assert(v.a == 1 and v.b == 2 and v.c == 3)

-- tests for __pairs and __ipairs; not iterating just testing what is returned

local tp = ffi.metatype("struct newtest",

{__pairs = function(tp) return tp.a, tp.b end, __ipairs = function(tp) return tp.b, tp.c end}

)

local v = tp(1, 2, 3)

x, y = pairs(v)

assert(x == 1 and y == 2)

x, y = ipairs(v)

assert(x == 2 and y == 3)

-- test for pointer to struct having same metamethods

local st = ffi.cdef "struct ptest {int a, b;};"

local tp = ffi.metatype("struct ptest", {__index = function(s, k) return k end, __len = function(s) return 3 end})

local a = tp(1, 2)

assert(a.banana == "banana")

assert(#a == 3)

local b = ffi.new("int[2]")

local c = ffi.cast("struct ptest *", b)

assert(c.banana == "banana") -- should have same methods

assert(#c == 3)

print('Test PASSED')

luaffi/test.lua at master · bin601/luaffi · GitHub

Expand file tree

Breadcrumbs

test.lua

Latest commit

History

Breadcrumbs

test.lua

File metadata and controls