Viewing: github-redirect.dependabot.com

Repository navigation

More items

Blame

History

Code
Blame

449 lines (399 loc) 12.8 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

#include "Python.h"

#include "errcode.h"

#include "internal/pycore_critical_section.h" // Py_BEGIN_CRITICAL_SECTION

#include "../Parser/tokenizer/tokenizer.h"

#include "../Parser/pegen.h" // _PyPegen_byte_offset_to_character_offset()

static struct PyModuleDef _tokenizemodule;

typedef struct {

PyTypeObject *TokenizerIter;

} tokenize_state;

static tokenize_state *

get_tokenize_state(PyObject *module) {

return (tokenize_state *)PyModule_GetState(module);

}

#define _tokenize_get_state_by_type(type) \

get_tokenize_state(PyType_GetModuleByDef(type, &_tokenizemodule))

#include "pycore_runtime.h"

#include "clinic/Python-tokenize.c.h"

/*[clinic input]

module _tokenizer

class _tokenizer.tokenizeriter "tokenizeriterobject *" "_tokenize_get_state_by_type(type)->TokenizerIter"

[clinic start generated code]*/

/*[clinic end generated code: output=da39a3ee5e6b4b0d input=96d98ee2fef7a8bc]*/

typedef struct

{

PyObject_HEAD struct tok_state *tok;

int done;

int extra_tokens;

/* Needed to cache line for performance */

PyObject *last_line;

Py_ssize_t last_lineno;

Py_ssize_t byte_col_offset_diff;

} tokenizeriterobject;

/*[clinic input]

@classmethod

_tokenizer.tokenizeriter.__new__ as tokenizeriter_new

readline: object

extra_tokens: bool

encoding: str(c_default="NULL") = 'utf-8'

[clinic start generated code]*/

static PyObject *

tokenizeriter_new_impl(PyTypeObject *type, PyObject *readline,

int extra_tokens, const char *encoding)

/*[clinic end generated code: output=7501a1211683ce16 input=f7dddf8a613ae8bd]*/

{

struct tok_state *tok = _PyTokenizer_FromReadline(readline, encoding);

if (tok == NULL) {

return NULL;

}

_Py_DECLARE_STR(anon_string, "<string>");

_PyTokenizer_SetContext(tok, &_Py_STR(anon_string), NULL);

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

if (self == NULL) {

_PyTokenizer_Free(tok);

return NULL;

}

self->tok = tok;

_PyTokenizer_SetOptions(self->tok, extra_tokens, 0);

self->extra_tokens = extra_tokens;

self->done = 0;

self->last_line = NULL;

self->byte_col_offset_diff = 0;

self->last_lineno = 0;

return (PyObject *)self;

}

static void

_tokenizer_error(tokenizeriterobject *it)

{

_Py_CRITICAL_SECTION_ASSERT_OBJECT_LOCKED(it);

assert(!PyErr_Occurred());

const char *msg = NULL;

PyObject* errtype = PyExc_SyntaxError;

struct tok_state *tok = it->tok;

_PyTokenizer_Info info = _PyTokenizer_GetInfo(tok);

switch (info.status) {

case E_TOKEN:

msg = "invalid token";

break;

case E_EOF:

PyErr_SetString(PyExc_SyntaxError, "unexpected EOF in multi-line statement");

PyErr_SyntaxLocationObject(

info.filename, info.location.lineno,

(int)Py_MAX(0, info.input_span.end - info.input_span.start));

return;

case E_DEDENT:

msg = "unindent does not match any outer indentation level";

errtype = PyExc_IndentationError;

break;

case E_INTR:

PyErr_SetNone(PyExc_KeyboardInterrupt);

return;

case E_NOMEM:

PyErr_NoMemory();

return;

case E_TABSPACE:

errtype = PyExc_TabError;

msg = "inconsistent use of tabs and spaces in indentation";

break;

case E_TOODEEP:

errtype = PyExc_IndentationError;

msg = "too many levels of indentation";

break;

case E_LINECONT: {

msg = "unexpected character after line continuation character";

break;

}

default:

msg = "unknown tokenization error";

}

PyObject* error_line = NULL;

PyObject* value = NULL;

Py_ssize_t input_size;

const char *input = _PyTokenizer_SpanView(

tok, info.input_span, &input_size);

Py_ssize_t size = input_size;

assert(input[size-1] == '\n');

size -= 1; // Remove the newline character from the end of the line

error_line = PyUnicode_DecodeUTF8(input, size, "replace");

if (!error_line) {

goto exit;

}

Py_ssize_t offset = _PyPegen_byte_offset_to_character_offset(error_line, input_size);

if (offset == -1) {

goto exit;

}

value = Py_BuildValue("(s(OinOOO))", msg, info.filename,

info.location.lineno, offset, error_line,

Py_None, Py_None);

if (!value) {

goto exit;

}

PyErr_SetObject(errtype, value);

exit:

Py_XDECREF(error_line);

Py_XDECREF(value);

}

static PyObject *

_get_current_line(tokenizeriterobject *it, int current_lineno,

const char *line_start, Py_ssize_t size, int *line_changed)

{

_Py_CRITICAL_SECTION_ASSERT_OBJECT_LOCKED(it);

if (current_lineno != it->last_lineno) {

// Line has changed since last token, so we fetch the new line and cache it

// in the iter object.

Py_XDECREF(it->last_line);

it->last_line = PyUnicode_DecodeUTF8(line_start, size, "replace");

it->byte_col_offset_diff = 0;

}

else {

*line_changed = 0;

}

return it->last_line;

}

static int

_get_col_offsets(tokenizeriterobject *it, const struct token *token,

const _PyToken_View *view, PyObject *line, int line_changed,

Py_ssize_t *col_offset, Py_ssize_t *end_col_offset)

{

_Py_CRITICAL_SECTION_ASSERT_OBJECT_LOCKED(it);

const char *token_start = view->text;

const char *token_end = token_start == NULL

? NULL : token_start + view->length;

Py_ssize_t lineno = token->start_loc.lineno;

Py_ssize_t end_lineno = token->end_loc.lineno;

Py_ssize_t byte_offset = -1;

if (token_start != NULL && token_start >= view->line) {

byte_offset = token_start - view->line;

if (line_changed) {

*col_offset = _PyPegen_byte_offset_to_character_offset_line(line, 0, byte_offset);

if (*col_offset < 0) {

return -1;

}

it->byte_col_offset_diff = byte_offset - *col_offset;

}

else {

*col_offset = byte_offset - it->byte_col_offset_diff;

}

if (token_end != NULL && token_end >= view->end_line) {

Py_ssize_t end_byte_offset = token_end - view->end_line;

if (lineno == end_lineno) {

// Avoid rescanning the prefix of a very long line.

Py_ssize_t token_col_offset = _PyPegen_byte_offset_to_character_offset_line(line, byte_offset, end_byte_offset);

if (token_col_offset < 0) {

return -1;

}

*end_col_offset = *col_offset + token_col_offset;

it->byte_col_offset_diff += token_end - token_start - token_col_offset;

}

else {

*end_col_offset = _PyPegen_byte_offset_to_character_offset_line(

line, view->end_line - view->line, token_end - view->line);

if (*end_col_offset < 0) {

return -1;

}

it->byte_col_offset_diff += end_byte_offset - *end_col_offset;

}

it->last_lineno = lineno;

return 0;

}

static PyObject *

tokenizeriter_next(PyObject *op)

{

tokenizeriterobject *it = (tokenizeriterobject*)op;

PyObject* result = NULL;

Py_BEGIN_CRITICAL_SECTION(it);

if (it->done) {

PyErr_SetString(PyExc_StopIteration, "EOF");

goto unlock;

}

struct token token;

_PyToken_Init(&token);

_PyTokenizer_Get(it->tok, &token);

int type = token.type;

if (type == ERRORTOKEN) {

if(!PyErr_Occurred()) {

_tokenizer_error(it);

assert(PyErr_Occurred());

}

goto exit;

}

_PyToken_View view;

_PyToken_GetView(it->tok, &token, &view);

const char *token_start = view.text;

PyObject *str;

if (token.span.start < 0) {

assert(token.span.start == -1 && token.span.end == -1);

str = Py_GetConstant(Py_CONSTANT_EMPTY_STR);

}

else {

str = PyUnicode_FromStringAndSize(token_start, view.length);

}

if (str == NULL) {

goto exit;

}

int is_trailing_token = type == ENDMARKER || (type == DEDENT && view.at_eof);

PyObject* line = NULL;

int line_changed = 1;

if (it->extra_tokens && is_trailing_token) {

line = Py_GetConstant(Py_CONSTANT_EMPTY_STR);

} else {

Py_ssize_t size = view.line_length;

if (size >= 1 && view.implicit_newline) {

size -= 1;

}

line = _get_current_line(

it, token.end_loc.lineno, view.line, size, &line_changed);

}

if (line == NULL) {

Py_DECREF(str);

goto exit;

}

Py_ssize_t lineno = token.start_loc.lineno;

Py_ssize_t end_lineno = token.end_loc.lineno;

Py_ssize_t col_offset = -1;

Py_ssize_t end_col_offset = -1;

if (_get_col_offsets(it, &token, &view, line,

line_changed, &col_offset, &end_col_offset) < 0) {

Py_DECREF(str);

goto exit;

}

if (it->extra_tokens) {

if (is_trailing_token) {

lineno = end_lineno = lineno + 1;

col_offset = end_col_offset = 0;

}

// Necessary adjustments to match the original Python tokenize

// implementation

if (type > DEDENT && type < OP) {

type = OP;

}

else if (type == NEWLINE) {

if (!view.implicit_newline) {

Py_DECREF(str);

assert(token_start != NULL);

if (token_start[0] == '\r') {

str = PyUnicode_FromString("\r\n");

} else {

str = PyUnicode_FromString("\n");

}

end_col_offset++;

}

else if (type == NL) {

if (view.implicit_newline) {

Py_DECREF(str);

str = Py_GetConstant(Py_CONSTANT_EMPTY_STR);

}

if (str == NULL) {

goto exit;

}

result = Py_BuildValue("(iN(nn)(nn)O)", type, str, lineno, col_offset, end_lineno, end_col_offset, line);

exit:

_PyToken_Free(&token);

if (type == ENDMARKER) {

it->done = 1;

}

unlock:;

Py_END_CRITICAL_SECTION();

return result;

}

static void

tokenizeriter_dealloc(PyObject *op)

{

tokenizeriterobject *it = (tokenizeriterobject*)op;

PyTypeObject *tp = Py_TYPE(it);

PyObject_GC_UnTrack(it);

Py_XDECREF(it->last_line);

_PyTokenizer_Free(it->tok);

tp->tp_free(it);

Py_DECREF(tp);

}

static int

tokenizeriter_traverse(PyObject *op, visitproc visit, void *arg)

{

tokenizeriterobject *it = (tokenizeriterobject *)op;

Py_VISIT(Py_TYPE(it));

Py_VISIT(it->last_line);

return _PyTokenizer_Traverse(it->tok, visit, arg);

}

static PyType_Slot tokenizeriter_slots[] = {

{Py_tp_new, tokenizeriter_new},

{Py_tp_dealloc, tokenizeriter_dealloc},

{Py_tp_traverse, tokenizeriter_traverse},

{Py_tp_getattro, PyObject_GenericGetAttr},

{Py_tp_iter, PyObject_SelfIter},

{Py_tp_iternext, tokenizeriter_next},

{0, NULL},

};

static PyType_Spec tokenizeriter_spec = {

.name = "_tokenize.TokenizerIter",

.basicsize = sizeof(tokenizeriterobject),

.flags = (Py_TPFLAGS_DEFAULT | Py_TPFLAGS_IMMUTABLETYPE | Py_TPFLAGS_HAVE_GC),

.slots = tokenizeriter_slots,

};

static int

tokenizemodule_exec(PyObject *m)

{

tokenize_state *state = get_tokenize_state(m);

if (state == NULL) {

return -1;

}

state->TokenizerIter = (PyTypeObject *)PyType_FromModuleAndSpec(m, &tokenizeriter_spec, NULL);

if (state->TokenizerIter == NULL) {

return -1;

}

if (PyModule_AddType(m, state->TokenizerIter) < 0) {

return -1;

}

return 0;

}

static PyMethodDef tokenize_methods[] = {

{NULL, NULL, 0, NULL} /* Sentinel */

};

static PyModuleDef_Slot tokenizemodule_slots[] = {

_Py_ABI_SLOT,

{Py_mod_exec, tokenizemodule_exec},

{Py_mod_multiple_interpreters, Py_MOD_PER_INTERPRETER_GIL_SUPPORTED},

{Py_mod_gil, Py_MOD_GIL_NOT_USED},

{0, NULL}

};

static int

tokenizemodule_traverse(PyObject *m, visitproc visit, void *arg)

{

tokenize_state *state = get_tokenize_state(m);

Py_VISIT(state->TokenizerIter);

return 0;

}

static int

tokenizemodule_clear(PyObject *m)

{

tokenize_state *state = get_tokenize_state(m);

Py_CLEAR(state->TokenizerIter);

return 0;

}

static void

tokenizemodule_free(void *m)

{

tokenizemodule_clear((PyObject *)m);

}

static struct PyModuleDef _tokenizemodule = {

PyModuleDef_HEAD_INIT,

.m_name = "_tokenize",

.m_size = sizeof(tokenize_state),

.m_slots = tokenizemodule_slots,

.m_methods = tokenize_methods,

.m_traverse = tokenizemodule_traverse,

.m_clear = tokenizemodule_clear,

.m_free = tokenizemodule_free,

};

PyMODINIT_FUNC

PyInit__tokenize(void)

{

return PyModuleDef_Init(&_tokenizemodule);

}

Terms
Privacy
Security
Status
Community
Docs
Contact
Manage cookies
Do not share my personal information

Navigation Menu

Repository navigation

Files

Navigation Menu

Repository navigation

FilesExpand file tree

Breadcrumbs

Python-tokenize.c

Latest commit

History

Breadcrumbs

Python-tokenize.c

File metadata and controls

Footer

Footer navigation

Files