node/src/node_script.cc at master · nodejsjp/node · GitHub

History

446 lines (335 loc) · 13.2 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

// Copyright Joyent, Inc. and other Node contributors.

// Permission is hereby granted, free of charge, to any person obtaining a

// copy of this software and associated documentation files (the

// "Software"), to deal in the Software without restriction, including

// without limitation the rights to use, copy, modify, merge, publish,

// distribute, sublicense, and/or sell copies of the Software, and to permit

// persons to whom the Software is furnished to do so, subject to the

// following conditions:

// The above copyright notice and this permission notice shall be included

// in all copies or substantial portions of the Software.

// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN

// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,

// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR

// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE

// USE OR OTHER DEALINGS IN THE SOFTWARE.

#include <node.h>

#include <node_script.h>

#include <assert.h>

namespace node {

using v8::Context;

using v8::Script;

using v8::Value;

using v8::Handle;

using v8::HandleScope;

using v8::Object;

using v8::Arguments;

using v8::ThrowException;

using v8::TryCatch;

using v8::String;

using v8::Exception;

using v8::Local;

using v8::Array;

using v8::Persistent;

using v8::Integer;

using v8::FunctionTemplate;

class WrappedContext : ObjectWrap {

public:

static void Initialize(Handle<Object> target);

static Handle<Value> New(const Arguments& args);

Persistent<Context> GetV8Context();

static Local<Object> NewInstance();

static bool InstanceOf(Handle<Value> value);

protected:

static Persistent<FunctionTemplate> constructor_template;

WrappedContext();

~WrappedContext();

Persistent<Context> context_;

};

Persistent<FunctionTemplate> WrappedContext::constructor_template;

class WrappedScript : ObjectWrap {

public:

static void Initialize(Handle<Object> target);

enum EvalInputFlags { compileCode, unwrapExternal };

enum EvalContextFlags { thisContext, newContext, userContext };

enum EvalOutputFlags { returnResult, wrapExternal };

template <EvalInputFlags input_flag,

EvalContextFlags context_flag,

EvalOutputFlags output_flag>

static Handle<Value> EvalMachine(const Arguments& args);

protected:

static Persistent<FunctionTemplate> constructor_template;

WrappedScript() : ObjectWrap() {}

~WrappedScript();

static Handle<Value> New(const Arguments& args);

static Handle<Value> CreateContext(const Arguments& arg);

static Handle<Value> RunInContext(const Arguments& args);

static Handle<Value> RunInThisContext(const Arguments& args);

static Handle<Value> RunInNewContext(const Arguments& args);

static Handle<Value> CompileRunInContext(const Arguments& args);

static Handle<Value> CompileRunInThisContext(const Arguments& args);

static Handle<Value> CompileRunInNewContext(const Arguments& args);

Persistent<Script> script_;

};

void WrappedContext::Initialize(Handle<Object> target) {

HandleScope scope;

Local<FunctionTemplate> t = FunctionTemplate::New(WrappedContext::New);

constructor_template = Persistent<FunctionTemplate>::New(t);

constructor_template->InstanceTemplate()->SetInternalFieldCount(1);

constructor_template->SetClassName(String::NewSymbol("Context"));

target->Set(String::NewSymbol("Context"),

constructor_template->GetFunction());

}

bool WrappedContext::InstanceOf(Handle<Value> value) {

return !value.IsEmpty() && constructor_template->HasInstance(value);

}

Handle<Value> WrappedContext::New(const Arguments& args) {

HandleScope scope;

WrappedContext *t = new WrappedContext();

t->Wrap(args.This());

return args.This();

}

WrappedContext::WrappedContext() : ObjectWrap() {

context_ = Context::New();

}

WrappedContext::~WrappedContext() {

context_.Dispose();

}

Local<Object> WrappedContext::NewInstance() {

Local<Object> context = constructor_template->GetFunction()->NewInstance();

return context;

}

Persistent<Context> WrappedContext::GetV8Context() {

return context_;

}

Persistent<FunctionTemplate> WrappedScript::constructor_template;

void WrappedScript::Initialize(Handle<Object> target) {

HandleScope scope;

Local<FunctionTemplate> t = FunctionTemplate::New(WrappedScript::New);

constructor_template = Persistent<FunctionTemplate>::New(t);

constructor_template->InstanceTemplate()->SetInternalFieldCount(1);

// Note: We use 'NodeScript' instead of 'Script' so that we do not

// conflict with V8's Script class defined in v8/src/messages.js

// See GH-203 https://github.com/joyent/node/issues/203

constructor_template->SetClassName(String::NewSymbol("NodeScript"));

NODE_SET_PROTOTYPE_METHOD(constructor_template,

"createContext",

WrappedScript::CreateContext);

NODE_SET_PROTOTYPE_METHOD(constructor_template,

"runInContext",

WrappedScript::RunInContext);

NODE_SET_PROTOTYPE_METHOD(constructor_template,

"runInThisContext",

WrappedScript::RunInThisContext);

NODE_SET_PROTOTYPE_METHOD(constructor_template,

"runInNewContext",

WrappedScript::RunInNewContext);

NODE_SET_METHOD(constructor_template,

"createContext",

WrappedScript::CreateContext);

NODE_SET_METHOD(constructor_template,

"runInContext",

WrappedScript::CompileRunInContext);

NODE_SET_METHOD(constructor_template,

"runInThisContext",

WrappedScript::CompileRunInThisContext);

NODE_SET_METHOD(constructor_template,

"runInNewContext",

WrappedScript::CompileRunInNewContext);

target->Set(String::NewSymbol("NodeScript"),

constructor_template->GetFunction());

}

Handle<Value> WrappedScript::New(const Arguments& args) {

if (!args.IsConstructCall()) {

return FromConstructorTemplate(constructor_template, args);

}

HandleScope scope;

WrappedScript *t = new WrappedScript();

t->Wrap(args.Holder());

return

WrappedScript::EvalMachine<compileCode, thisContext, wrapExternal>(args);

}

WrappedScript::~WrappedScript() {

script_.Dispose();

}

Handle<Value> WrappedScript::CreateContext(const Arguments& args) {

HandleScope scope;

Local<Object> context = WrappedContext::NewInstance();

if (args.Length() > 0) {

Local<Object> sandbox = args[0]->ToObject();

Local<Array> keys = sandbox->GetPropertyNames();

for (uint32_t i = 0; i < keys->Length(); i++) {

Handle<String> key = keys->Get(Integer::New(i))->ToString();

Handle<Value> value = sandbox->Get(key);

if(value == sandbox) { value = context; }

context->Set(key, value);

}

return scope.Close(context);

}

Handle<Value> WrappedScript::RunInContext(const Arguments& args) {

return

WrappedScript::EvalMachine<unwrapExternal, userContext, returnResult>(args);

}

Handle<Value> WrappedScript::RunInThisContext(const Arguments& args) {

return

WrappedScript::EvalMachine<unwrapExternal, thisContext, returnResult>(args);

}

Handle<Value> WrappedScript::RunInNewContext(const Arguments& args) {

return

WrappedScript::EvalMachine<unwrapExternal, newContext, returnResult>(args);

}

Handle<Value> WrappedScript::CompileRunInContext(const Arguments& args) {

return

WrappedScript::EvalMachine<compileCode, userContext, returnResult>(args);

}

Handle<Value> WrappedScript::CompileRunInThisContext(const Arguments& args) {

return

WrappedScript::EvalMachine<compileCode, thisContext, returnResult>(args);

}

Handle<Value> WrappedScript::CompileRunInNewContext(const Arguments& args) {

return

WrappedScript::EvalMachine<compileCode, newContext, returnResult>(args);

}

template <WrappedScript::EvalInputFlags input_flag,

WrappedScript::EvalContextFlags context_flag,

WrappedScript::EvalOutputFlags output_flag>

Handle<Value> WrappedScript::EvalMachine(const Arguments& args) {

HandleScope scope;

if (input_flag == compileCode && args.Length() < 1) {

return ThrowException(Exception::TypeError(

String::New("needs at least 'code' argument.")));

}

const int sandbox_index = input_flag == compileCode ? 1 : 0;

if (context_flag == userContext

&& !WrappedContext::InstanceOf(args[sandbox_index]))

{

return ThrowException(Exception::TypeError(

String::New("needs a 'context' argument.")));

}

Local<String> code;

if (input_flag == compileCode) code = args[0]->ToString();

Local<Object> sandbox;

if (context_flag == newContext) {

sandbox = args[sandbox_index]->IsObject() ? args[sandbox_index]->ToObject()

: Object::New();

} else if (context_flag == userContext) {

sandbox = args[sandbox_index]->ToObject();

}

const int filename_index = sandbox_index +

(context_flag == newContext ? 1 : 0);

Local<String> filename = args.Length() > filename_index

? args[filename_index]->ToString()

: String::New("evalmachine.<anonymous>");

const int display_error_index = args.Length() - 1;

bool display_error = false;

if (args.Length() > display_error_index &&

args[display_error_index]->IsBoolean() &&

args[display_error_index]->BooleanValue() == true) {

display_error = true;

}

Persistent<Context> context;

Local<Array> keys;

unsigned int i;

if (context_flag == newContext) {

// Create the new context

context = Context::New();

} else if (context_flag == userContext) {

// Use the passed in context

Local<Object> contextArg = args[sandbox_index]->ToObject();

WrappedContext *nContext = ObjectWrap::Unwrap<WrappedContext>(sandbox);

context = nContext->GetV8Context();

}

// New and user context share code. DRY it up.

if (context_flag == userContext || context_flag == newContext) {

// Enter the context

context->Enter();

// Copy everything from the passed in sandbox (either the persistent

// context for runInContext(), or the sandbox arg to runInNewContext()).

keys = sandbox->GetPropertyNames();

for (i = 0; i < keys->Length(); i++) {

Handle<String> key = keys->Get(Integer::New(i))->ToString();

Handle<Value> value = sandbox->Get(key);

if (value == sandbox) { value = context->Global(); }

context->Global()->Set(key, value);

}

// Catch errors

TryCatch try_catch;

Handle<Value> result;

Handle<Script> script;

if (input_flag == compileCode) {

// well, here WrappedScript::New would suffice in all cases, but maybe

// Compile has a little better performance where possible

script = output_flag == returnResult ? Script::Compile(code, filename)

: Script::New(code, filename);

if (script.IsEmpty()) {

// FIXME UGLY HACK TO DISPLAY SYNTAX ERRORS.

if (display_error) DisplayExceptionLine(try_catch);

// Hack because I can't get a proper stacktrace on SyntaxError

return try_catch.ReThrow();

}

} else {

WrappedScript *n_script = ObjectWrap::Unwrap<WrappedScript>(args.Holder());

if (!n_script) {

return ThrowException(Exception::Error(

String::New("Must be called as a method of Script.")));

} else if (n_script->script_.IsEmpty()) {

return ThrowException(Exception::Error(

String::New("'this' must be a result of previous "

"new Script(code) call.")));

}

script = n_script->script_;

}

if (output_flag == returnResult) {

result = script->Run();

if (result.IsEmpty()) {

if (context_flag == newContext) {

context->DetachGlobal();

context->Exit();

context.Dispose();

}

return try_catch.ReThrow();

}

} else {

WrappedScript *n_script = ObjectWrap::Unwrap<WrappedScript>(args.Holder());

if (!n_script) {

return ThrowException(Exception::Error(

String::New("Must be called as a method of Script.")));

}

n_script->script_ = Persistent<Script>::New(script);

result = args.This();

}

if (context_flag == userContext || context_flag == newContext) {

// success! copy changes back onto the sandbox object.

keys = context->Global()->GetPropertyNames();

for (i = 0; i < keys->Length(); i++) {

Handle<String> key = keys->Get(Integer::New(i))->ToString();

Handle<Value> value = context->Global()->Get(key);

if (value == context->Global()) { value = sandbox; }

sandbox->Set(key, value);

}

if (context_flag == newContext) {

// Clean up, clean up, everybody everywhere!

context->DetachGlobal();

context->Exit();

context.Dispose();

} else if (context_flag == userContext) {

// Exit the passed in context.

context->Exit();

}

return result == args.This() ? result : scope.Close(result);

}

void InitEvals(Handle<Object> target) {

HandleScope scope;

WrappedContext::Initialize(target);

WrappedScript::Initialize(target);

}

} // namespace node

NODE_MODULE(node_evals, node::InitEvals);

node/src/node_script.cc at master · nodejsjp/node · GitHub

Uh oh!

Expand file tree

Breadcrumbs

node_script.cc

Latest commit

History

Breadcrumbs

node_script.cc

File metadata and controls