python-rapidjson/rapidjson.cpp at master · python-rapidjson/python-rapidjson · GitHub

History

4138 lines (3513 loc) · 139 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

// -*- coding: utf-8 -*-

// :Project: python-rapidjson -- Python extension module

// :Author: Ken Robbins <ken@kenrobbins.com>

// :License: MIT License

#include <locale.h>

#include <Python.h>

#include <datetime.h>

#include <structmember.h>

#include <algorithm>

#include <cmath>

#include <string>

#include <vector>

#include "rapidjson/reader.h"

#include "rapidjson/schema.h"

#include "rapidjson/stringbuffer.h"

#include "rapidjson/writer.h"

#include "rapidjson/prettywriter.h"

#include "rapidjson/error/en.h"

using namespace rapidjson;

/* On some MacOS combo, using Py_IS_XXX() macros does not work (see

https://github.com/python-rapidjson/python-rapidjson/issues/78).

OTOH, MSVC < 2015 does not have std::isxxx() (see

https://stackoverflow.com/questions/38441740/where-is-isnan-in-msvc-2010).

Oh well... */

#if defined (_MSC_VER) && (_MSC_VER < 1900)

#define IS_NAN(x) Py_IS_NAN(x)

#define IS_INF(x) Py_IS_INFINITY(x)

#else

#define IS_NAN(x) std::isnan(x)

#define IS_INF(x) std::isinf(x)

#endif

static PyObject* decimal_type = NULL;

static PyObject* timezone_type = NULL;

static PyObject* timezone_utc = NULL;

static PyObject* uuid_type = NULL;

static PyObject* validation_error = NULL;

static PyObject* decode_error = NULL;

/* These are the names of often used methods or literal values, interned in the module

initialization function, to avoid repeated creation/destruction of PyUnicode values

from plain C strings.

We cannot use _Py_IDENTIFIER() because that upsets the GNU C++ compiler in -pedantic

mode. */

static PyObject* astimezone_name = NULL;

static PyObject* hex_name = NULL;

static PyObject* timestamp_name = NULL;

static PyObject* total_seconds_name = NULL;

static PyObject* utcoffset_name = NULL;

static PyObject* is_infinite_name = NULL;

static PyObject* is_nan_name = NULL;

static PyObject* start_object_name = NULL;

static PyObject* end_object_name = NULL;

static PyObject* default_name = NULL;

static PyObject* end_array_name = NULL;

static PyObject* string_name = NULL;

static PyObject* read_name = NULL;

static PyObject* write_name = NULL;

static PyObject* encoding_name = NULL;

static PyObject* minus_inf_string_value = NULL;

static PyObject* nan_string_value = NULL;

static PyObject* plus_inf_string_value = NULL;

struct HandlerContext {

PyObject* object;

const char* key;

SizeType keyLength;

bool isObject;

bool keyValuePairs;

bool copiedKey;

};

enum DatetimeMode {

DM_NONE = 0,

// Formats

DM_ISO8601 = 1<<0, // Bidirectional ISO8601 for datetimes, dates and times

DM_UNIX_TIME = 1<<1, // Serialization only, "Unix epoch"-based number of seconds

// Options

DM_ONLY_SECONDS = 1<<4, // Truncate values to the whole second, ignoring micro seconds

DM_IGNORE_TZ = 1<<5, // Ignore timezones

DM_NAIVE_IS_UTC = 1<<6, // Assume naive datetime are in UTC timezone

DM_SHIFT_TO_UTC = 1<<7, // Shift to/from UTC

DM_MAX = 1<<8

};

#define DATETIME_MODE_FORMATS_MASK 0x0f // 0b00001111 in C++14

static inline int

datetime_mode_format(unsigned mode) {

return mode & DATETIME_MODE_FORMATS_MASK;

}

static inline bool

valid_datetime_mode(int mode) {

int format = datetime_mode_format(mode);

return (mode >= 0 && mode < DM_MAX

&& (format <= DM_UNIX_TIME)

&& (mode == 0 || format > 0));

}

static int

days_per_month(int year, int month) {

assert(month >= 1);

assert(month <= 12);

if (month == 1 || month == 3 || month == 5 || month == 7

|| month == 8 || month == 10 || month == 12) {

return 31;

} else if (month == 4 || month == 6 || month == 9 || month == 11) {

return 30;

} else if (year % 4 == 0 && (year % 100 != 0 || year % 400 == 0)) {

return 29;

} else {

return 28;

}

enum UuidMode {

UM_NONE = 0,

UM_CANONICAL = 1<<0, // 4-dashed 32 hex chars: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx

UM_HEX = 1<<1, // canonical OR 32 hex chars in a row

UM_MAX = 1<<2

};

enum NumberMode {

NM_NONE = 0,

NM_NAN = 1<<0, // allow "not-a-number" values

NM_DECIMAL = 1<<1, // serialize Decimal instances, deserialize floats as Decimal

NM_NATIVE = 1<<2, // use faster native C library number handling

NM_MAX = 1<<3

};

enum BytesMode {

BM_NONE = 0,

BM_UTF8 = 1<<0, // try to convert to UTF-8

BM_MAX = 1<<1

};

enum ParseMode {

PM_NONE = 0,

PM_COMMENTS = 1<<0, // Allow one-line // ... and multi-line /* ... */ comments

PM_TRAILING_COMMAS = 1<<1, // allow trailing commas at the end of objects and arrays

PM_MAX = 1<<2

};

enum WriteMode {

WM_COMPACT = 0,

WM_PRETTY = 1<<0, // Use PrettyWriter

WM_SINGLE_LINE_ARRAY = 1<<1, // Format arrays on a single line

WM_MAX = 1<<2

};

enum IterableMode {

IM_ANY_ITERABLE = 0, // Default, any iterable is dumped as JSON array

IM_ONLY_LISTS = 1<<0, // Only list instances are dumped as JSON arrays

IM_MAX = 1<<1

};

enum MappingMode {

MM_ANY_MAPPING = 0, // Default, any mapping is dumped as JSON object

MM_ONLY_DICTS = 1<<0, // Only dict instances are dumped as JSON objects

MM_COERCE_KEYS_TO_STRINGS = 1<<1, // Convert keys to strings

MM_SKIP_NON_STRING_KEYS = 1<<2, // Ignore non-string keys

MM_SORT_KEYS = 1<<3, // Sort keys

MM_MAX = 1<<4

};

//////////////////////////

// Forward declarations //

//////////////////////////

static PyObject* do_decode(PyObject* decoder,

const char* jsonStr, Py_ssize_t jsonStrlen,

PyObject* jsonStream, size_t chunkSize,

PyObject* objectHook,

unsigned numberMode, unsigned datetimeMode,

unsigned uuidMode, unsigned parseMode);

static PyObject* decoder_call(PyObject* self, PyObject* args, PyObject* kwargs);

static PyObject* decoder_new(PyTypeObject* type, PyObject* args, PyObject* kwargs);

static PyObject* do_encode(PyObject* value, PyObject* defaultFn, bool ensureAscii,

unsigned writeMode, char indentChar, unsigned indentCount,

unsigned numberMode, unsigned datetimeMode,

unsigned uuidMode, unsigned bytesMode,

unsigned iterableMode, unsigned mappingMode);

static PyObject* do_stream_encode(PyObject* value, PyObject* stream, size_t chunkSize,

PyObject* defaultFn, bool ensureAscii,

unsigned writeMode, char indentChar,

unsigned indentCount, unsigned numberMode,

unsigned datetimeMode, unsigned uuidMode,

unsigned bytesMode, unsigned iterableMode,

unsigned mappingMode);

static PyObject* encoder_call(PyObject* self, PyObject* args, PyObject* kwargs);

static PyObject* encoder_new(PyTypeObject* type, PyObject* args, PyObject* kwargs);

static PyObject* validator_call(PyObject* self, PyObject* args, PyObject* kwargs);

static void validator_dealloc(PyObject* self);

static PyObject* validator_new(PyTypeObject* type, PyObject* args, PyObject* kwargs);

///////////////////////////////////////////////////

// Stream wrapper around Python file-like object //

///////////////////////////////////////////////////

class PyReadStreamWrapper {

public:

typedef char Ch;

PyReadStreamWrapper(PyObject* stream, size_t size)

: stream(stream) {

Py_INCREF(stream);

chunkSize = PyLong_FromUnsignedLong(size);

buffer = NULL;

chunk = NULL;

chunkLen = 0;

pos = 0;

offset = 0;

eof = false;

}

~PyReadStreamWrapper() {

Py_CLEAR(stream);

Py_CLEAR(chunkSize);

Py_CLEAR(chunk);

}

Ch Peek() {

if (!eof && pos == chunkLen) {

Read();

}

return eof ? '\0' : buffer[pos];

}

Ch Take() {

if (!eof && pos == chunkLen) {

Read();

}

return eof ? '\0' : buffer[pos++];

}

size_t Tell() const {

return offset + pos;

}

void Flush() {

assert(false);

}

void Put(Ch c) {

assert(false);

}

Ch* PutBegin() {

assert(false);

return 0;

}

size_t PutEnd(Ch* begin) {

assert(false);

return 0;

}

private:

void Read() {

Py_CLEAR(chunk);

chunk = PyObject_CallMethodObjArgs(stream, read_name, chunkSize, NULL);

if (chunk == NULL) {

eof = true;

} else {

Py_ssize_t len;

if (PyBytes_Check(chunk)) {

len = PyBytes_GET_SIZE(chunk);

buffer = PyBytes_AS_STRING(chunk);

} else {

buffer = PyUnicode_AsUTF8AndSize(chunk, &len);

if (buffer == NULL) {

len = 0;

}

if (len == 0) {

eof = true;

} else {

offset += chunkLen;

chunkLen = len;

pos = 0;

}

PyObject* stream;

PyObject* chunkSize;

PyObject* chunk;

const Ch* buffer;

size_t chunkLen;

size_t pos;

size_t offset;

bool eof;

};

class PyWriteStreamWrapper {

public:

typedef char Ch;

PyWriteStreamWrapper(PyObject* stream, size_t size)

: stream(stream) {

Py_INCREF(stream);

buffer = (char*) PyMem_Malloc(size);

assert(buffer);

bufferEnd = buffer + size;

cursor = buffer;

multiByteChar = NULL;

isBinary = !PyObject_HasAttr(stream, encoding_name);

}

~PyWriteStreamWrapper() {

Py_CLEAR(stream);

PyMem_Free(buffer);

}

Ch Peek() {

assert(false);

return 0;

}

Ch Take() {

assert(false);

return 0;

}

size_t Tell() const {

assert(false);

return 0;

}

void Flush() {

PyObject* c;

if (isBinary) {

c = PyBytes_FromStringAndSize(buffer, (size_t)(cursor - buffer));

cursor = buffer;

} else {

if (multiByteChar == NULL) {

c = PyUnicode_FromStringAndSize(buffer, (size_t)(cursor - buffer));

cursor = buffer;

} else {

size_t complete = (size_t)(multiByteChar - buffer);

c = PyUnicode_FromStringAndSize(buffer, complete);

size_t remaining = (size_t)(cursor - multiByteChar);

if (RAPIDJSON_LIKELY(remaining < complete))

memcpy(buffer, multiByteChar, remaining);

else

std::memmove(buffer, multiByteChar, remaining);

cursor = buffer + remaining;

multiByteChar = NULL;

}

if (c == NULL) {

// Propagate the error state, it will be caught by dumps_internal()

} else {

PyObject* res = PyObject_CallMethodObjArgs(stream, write_name, c, NULL);

if (res == NULL) {

// Likewise

} else {

Py_DECREF(res);

}

Py_DECREF(c);

}

void Put(Ch c) {

if (cursor == bufferEnd)

Flush();

if (!isBinary) {

if ((c & 0x80) == 0) {

multiByteChar = NULL;

} else if (c & 0x40) {

multiByteChar = cursor;

}

*cursor++ = c;

}

Ch* PutBegin() {

assert(false);

return 0;

}

size_t PutEnd(Ch* begin) {

assert(false);

return 0;

}

private:

PyObject* stream;

Ch* buffer;

Ch* bufferEnd;

Ch* cursor;

Ch* multiByteChar;

bool isBinary;

};

inline void PutUnsafe(PyWriteStreamWrapper& stream, char c) {

stream.Put(c);

}

/////////////

// RawJSON //

/////////////

typedef struct {

PyObject_HEAD

PyObject* value;

} RawJSON;

static void

RawJSON_dealloc(RawJSON* self)

{

Py_XDECREF(self->value);

Py_TYPE(self)->tp_free((PyObject*) self);

}

static PyObject*

RawJSON_new(PyTypeObject* type, PyObject* args, PyObject* kwds)

{

PyObject* self = type->tp_alloc(type, 0);

static char const* kwlist[] = {

"value",

NULL

};

PyObject* value = NULL;

if (!PyArg_ParseTupleAndKeywords(args, kwds, "U", (char**) kwlist, &value))

return NULL;

((RawJSON*) self)->value = value;

Py_INCREF(value);

return self;

}

static PyMemberDef RawJSON_members[] = {

{"value",

T_OBJECT_EX, offsetof(RawJSON, value), READONLY,

"string representing a serialized JSON object"},

{NULL} /* Sentinel */

};

PyDoc_STRVAR(rawjson_doc,

"Raw (preserialized) JSON object\n"

"\n"

"When rapidjson tries to serialize instances of this class, it will"

" use their literal `value`. For instance:\n"

">>> rapidjson.dumps(RawJSON('{\"already\": \"serialized\"}'))\n"

"'{\"already\": \"serialized\"}'");

static PyTypeObject RawJSON_Type = {

PyVarObject_HEAD_INIT(NULL, 0)

"rapidjson.RawJSON", /* tp_name */

sizeof(RawJSON), /* tp_basicsize */

0, /* tp_itemsize */

(destructor) RawJSON_dealloc, /* tp_dealloc */

0, /* tp_print */

0, /* tp_getattr */

0, /* tp_setattr */

0, /* tp_compare */

0, /* tp_repr */

0, /* tp_as_number */

0, /* tp_as_sequence */

0, /* tp_as_mapping */

0, /* tp_hash */

0, /* tp_call */

0, /* tp_str */

0, /* tp_getattro */

0, /* tp_setattro */

0, /* tp_as_buffer */

Py_TPFLAGS_DEFAULT, /* tp_flags */

rawjson_doc, /* tp_doc */

0, /* tp_traverse */

0, /* tp_clear */

0, /* tp_richcompare */

0, /* tp_weaklistoffset */

0, /* tp_iter */

0, /* tp_iternext */

0, /* tp_methods */

RawJSON_members, /* tp_members */

0, /* tp_getset */

0, /* tp_base */

0, /* tp_dict */

0, /* tp_descr_get */

0, /* tp_descr_set */

0, /* tp_dictoffset */

0, /* tp_init */

0, /* tp_alloc */

RawJSON_new, /* tp_new */

};

static bool

accept_indent_arg(PyObject* arg, unsigned &write_mode, unsigned &indent_count,

char &indent_char)

{

if (arg != NULL && arg != Py_None) {

write_mode = WM_PRETTY;

if (PyLong_Check(arg) && PyLong_AsLong(arg) >= 0) {

indent_count = PyLong_AsUnsignedLong(arg);

} else if (PyUnicode_Check(arg)) {

Py_ssize_t len;

const char* indentStr = PyUnicode_AsUTF8AndSize(arg, &len);

indent_count = len;

if (indent_count) {

indent_char = '\0';

while (len--) {

char ch = indentStr[len];

if (ch == '\n' || ch == ' ' || ch == '\t' || ch == '\r') {

if (indent_char == '\0') {

indent_char = ch;

} else if (indent_char != ch) {

PyErr_SetString(

PyExc_TypeError,

"indent string cannot contains different chars");

return false;

}

} else {

PyErr_SetString(PyExc_TypeError,

"non-whitespace char in indent string");

return false;

}

} else {

PyErr_SetString(PyExc_TypeError,

"indent must be a non-negative int or a string");

return false;

}

return true;

}

static bool

accept_write_mode_arg(PyObject* arg, unsigned &write_mode)

{

if (arg != NULL && arg != Py_None) {

if (PyLong_Check(arg)) {

long mode = PyLong_AsLong(arg);

if (mode < 0 || mode >= WM_MAX) {

PyErr_SetString(PyExc_ValueError, "Invalid write_mode");

return false;

}

write_mode = (unsigned) mode;

} else {

PyErr_SetString(PyExc_TypeError,

"write_mode must be a non-negative int");

return false;

}

return true;

}

static bool

accept_number_mode_arg(PyObject* arg, int allow_nan, unsigned &number_mode)

{

if (arg != NULL) {

if (arg == Py_None)

number_mode = NM_NONE;

else if (PyLong_Check(arg)) {

long mode = PyLong_AsLong(arg);

if (mode < 0 || mode >= NM_MAX) {

PyErr_SetString(PyExc_ValueError, "Invalid number_mode, out of range");

return false;

}

number_mode = (unsigned) mode;

} else {

PyErr_SetString(PyExc_TypeError,

"number_mode must be a non-negative int");

return false;

}

if (allow_nan != -1) {

if (allow_nan)

number_mode |= NM_NAN;

else

number_mode &= ~NM_NAN;

}

return true;

}

static bool

accept_datetime_mode_arg(PyObject* arg, unsigned &datetime_mode)

{

if (arg != NULL && arg != Py_None) {

if (PyLong_Check(arg)) {

long mode = PyLong_AsLong(arg);

if (!valid_datetime_mode(mode)) {

PyErr_SetString(PyExc_ValueError, "Invalid datetime_mode, out of range");

return false;

}

datetime_mode = (unsigned) mode;

} else {

PyErr_SetString(PyExc_TypeError,

"datetime_mode must be a non-negative int");

return false;

}

return true;

}

static bool

accept_uuid_mode_arg(PyObject* arg, unsigned &uuid_mode)

{

if (arg != NULL && arg != Py_None) {

if (PyLong_Check(arg)) {

long mode = PyLong_AsLong(arg);

if (mode < 0 || mode >= UM_MAX) {

PyErr_SetString(PyExc_ValueError, "Invalid uuid_mode, out of range");

return false;

}

uuid_mode = (unsigned) mode;

} else {

PyErr_SetString(PyExc_TypeError, "uuid_mode must be a non-negative int");

return false;

}

return true;

}

static bool

accept_bytes_mode_arg(PyObject* arg, unsigned &bytes_mode)

{

if (arg != NULL && arg != Py_None) {

if (PyLong_Check(arg)) {

long mode = PyLong_AsLong(arg);

if (mode < 0 || mode >= BM_MAX) {

PyErr_SetString(PyExc_ValueError, "Invalid bytes_mode, out of range");

return false;

}

bytes_mode = (unsigned) mode;

} else {

PyErr_SetString(PyExc_TypeError, "bytes_mode must be a non-negative int");

return false;

}

return true;

}

static bool

accept_iterable_mode_arg(PyObject* arg, unsigned &iterable_mode)

{

if (arg != NULL && arg != Py_None) {

if (PyLong_Check(arg)) {

long mode = PyLong_AsLong(arg);

if (mode < 0 || mode >= IM_MAX) {

PyErr_SetString(PyExc_ValueError, "Invalid iterable_mode, out of range");

return false;

}

iterable_mode = (unsigned) mode;

} else {

PyErr_SetString(PyExc_TypeError, "iterable_mode must be a non-negative int");

return false;

}

return true;

}

static bool

accept_mapping_mode_arg(PyObject* arg, unsigned &mapping_mode)

{

if (arg != NULL && arg != Py_None) {

if (PyLong_Check(arg)) {

long mode = PyLong_AsLong(arg);

if (mode < 0 || mode >= MM_MAX) {

PyErr_SetString(PyExc_ValueError, "Invalid mapping_mode, out of range");

return false;

}

mapping_mode = (unsigned) mode;

} else {

PyErr_SetString(PyExc_TypeError, "mapping_mode must be a non-negative int");

return false;

}

return true;

}

static bool

accept_chunk_size_arg(PyObject* arg, size_t &chunk_size)

{

if (arg != NULL && arg != Py_None) {

if (PyLong_Check(arg)) {

Py_ssize_t size = PyNumber_AsSsize_t(arg, PyExc_ValueError);

if (PyErr_Occurred() || size < 4 || size > UINT_MAX) {

PyErr_SetString(PyExc_ValueError, "Invalid chunk_size, out of range");

return false;

}

chunk_size = (size_t) size;

} else {

PyErr_SetString(PyExc_TypeError,

"chunk_size must be a non-negative int");

return false;

}

return true;

}

static bool

accept_parse_mode_arg(PyObject* arg, unsigned &parse_mode)

{

if (arg != NULL && arg != Py_None) {

if (PyLong_Check(arg)) {

long mode = PyLong_AsLong(arg);

if (mode < 0 || mode >= PM_MAX) {

PyErr_SetString(PyExc_ValueError, "Invalid parse_mode, out of range");

return false;

}

parse_mode = (unsigned) mode;

} else {

PyErr_SetString(PyExc_TypeError,

"parse_mode must be a non-negative int");

return false;

}

return true;

}

/////////////

// Decoder //

/////////////

/* Adapted from CPython's Objects/floatobject.c::float_from_string_inner() */

static PyObject*

float_from_string(const char* s, Py_ssize_t len)

{

double x;

const char* end;

/* We don't care about overflow or underflow. If the platform

* supports them, infinities and signed zeroes (on underflow) are

* fine. */

x = PyOS_string_to_double(s, (char **) &end, NULL);

if (end != s + len) {

return NULL;

} else if (x == -1.0 && PyErr_Occurred()) {

return NULL;

} else {

return PyFloat_FromDouble(x);

}

struct PyHandler {

PyObject* decoderStartObject;

PyObject* decoderEndObject;

PyObject* decoderEndArray;

PyObject* decoderString;

PyObject* sharedKeys;

PyObject* root;

PyObject* objectHook;

unsigned datetimeMode;

unsigned uuidMode;

unsigned numberMode;

unsigned recursionLimit;

std::vector<HandlerContext> stack;

PyHandler(PyObject* decoder,

PyObject* hook,

unsigned dm,

unsigned um,

unsigned nm)

: decoderStartObject(NULL),

decoderEndObject(NULL),

decoderEndArray(NULL),

decoderString(NULL),

root(NULL),

objectHook(hook),

datetimeMode(dm),

uuidMode(um),

numberMode(nm)

{

stack.reserve(128);

if (decoder != NULL) {

assert(!objectHook);

if (PyObject_HasAttr(decoder, start_object_name)) {

decoderStartObject = PyObject_GetAttr(decoder, start_object_name);

}

if (PyObject_HasAttr(decoder, end_object_name)) {

decoderEndObject = PyObject_GetAttr(decoder, end_object_name);

}

if (PyObject_HasAttr(decoder, end_array_name)) {

decoderEndArray = PyObject_GetAttr(decoder, end_array_name);

}

if (PyObject_HasAttr(decoder, string_name)) {

decoderString = PyObject_GetAttr(decoder, string_name);

}

sharedKeys = PyDict_New();

recursionLimit = Py_GetRecursionLimit();

}

~PyHandler() {

while (!stack.empty()) {

const HandlerContext& ctx = stack.back();

if (ctx.copiedKey)

PyMem_Free((void*) ctx.key);

if (ctx.object != NULL)

Py_DECREF(ctx.object);

stack.pop_back();

}

Py_CLEAR(decoderStartObject);

Py_CLEAR(decoderEndObject);

Py_CLEAR(decoderEndArray);

Py_CLEAR(decoderString);

Py_CLEAR(sharedKeys);

}

bool Handle(PyObject* value) {

if (root) {

const HandlerContext& current = stack.back();

if (current.isObject) {

PyObject* key = PyUnicode_FromStringAndSize(current.key,

current.keyLength);

if (key == NULL) {

Py_DECREF(value);

return false;

}

PyObject* shared_key = PyDict_SetDefault(sharedKeys, key, key);

if (shared_key == NULL) {

Py_DECREF(key);

Py_DECREF(value);

return false;

}

Py_INCREF(shared_key);

Py_DECREF(key);

key = shared_key;

int rc;

if (current.keyValuePairs) {

PyObject* pair = PyTuple_Pack(2, key, value);

Py_DECREF(key);

Py_DECREF(value);

if (pair == NULL) {

return false;

}

rc = PyList_Append(current.object, pair);

Py_DECREF(pair);

} else {

if (PyDict_CheckExact(current.object))

// If it's a standard dictionary, this is +20% faster

rc = PyDict_SetItem(current.object, key, value);

else

rc = PyObject_SetItem(current.object, key, value);

Py_DECREF(key);

Py_DECREF(value);

}

if (rc == -1) {

return false;

}

} else {

int rc = PyList_Append(current.object, value);

Py_DECREF(value);

if (rc == -1) {

return false;

}

} else {

root = value;

}

return true;

}

bool Key(const char* str, SizeType length, bool copy) {

HandlerContext& current = stack.back();

// This happens when operating in stream mode and kParseInsituFlag is not set: we

// must copy the incoming string in the context, and destroy the duplicate when

// the context gets reused for the next dictionary key

if (current.key && current.copiedKey) {

PyMem_Free((void*) current.key);

current.key = NULL;

}

if (copy) {

char* copied_str = (char*) PyMem_Malloc(length+1);

if (copied_str == NULL)

return false;

memcpy(copied_str, str, length+1);

str = copied_str;

assert(!current.key);

}

current.key = str;

current.keyLength = length;

current.copiedKey = copy;

return true;

}

bool StartObject() {

if (recursionLimit-- == 0) {

PyErr_SetString(PyExc_RecursionError,

"Maximum parse recursion depth exceeded");

return false;

}

PyObject* mapping;

bool key_value_pairs;

if (decoderStartObject != NULL) {

mapping = PyObject_CallFunctionObjArgs(decoderStartObject, NULL);

if (mapping == NULL)

return false;

key_value_pairs = PyList_Check(mapping);

if (!PyMapping_Check(mapping) && !key_value_pairs) {

Py_DECREF(mapping);

PyErr_SetString(PyExc_ValueError,

"start_object() must return a mapping or a list instance");

return false;

}

} else {

mapping = PyDict_New();

if (mapping == NULL) {

return false;

}

key_value_pairs = false;

}

if (!Handle(mapping)) {

return false;

}

HandlerContext ctx;

ctx.isObject = true;

ctx.keyValuePairs = key_value_pairs;

ctx.object = mapping;

ctx.key = NULL;

ctx.copiedKey = false;

Py_INCREF(mapping);

stack.push_back(ctx);

return true;

}

bool EndObject(SizeType member_count) {

recursionLimit++;

View remainder of file in raw view

python-rapidjson/rapidjson.cpp at master · python-rapidjson/python-rapidjson · GitHub

Uh oh!

Expand file tree

Breadcrumbs

rapidjson.cpp

Latest commit

History

Breadcrumbs

rapidjson.cpp

File metadata and controls