Skip to content
Navigation Menu
{{ message }}
forked from nodejs/node-v0.x-archive
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathnode_script.cc
More file actions
437 lines (328 loc) · 13 KB
/
Copy pathnode_script.cc
File metadata and controls
437 lines (328 loc) · 13 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
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
// 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();
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());
}
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);
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 && args.Length() < (sandbox_index + 1)) {
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);
You can’t perform that action at this time.