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Issue 2505853003: Refactor SharedFunctionInfo::IsBuiltin. (Closed)
Patch Set: rebase Created 4 years, 1 month ago
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1 // Copyright 2012 the V8 project authors. All rights reserved. 1 // Copyright 2012 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #include "src/isolate.h" 5 #include "src/isolate.h"
6 6
7 #include <stdlib.h> 7 #include <stdlib.h>
8 8
9 #include <fstream> // NOLINT(readability/streams) 9 #include <fstream> // NOLINT(readability/streams)
10 #include <sstream> 10 #include <sstream>
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351 bool IsStrictFrame(JSFunction* fun) { 351 bool IsStrictFrame(JSFunction* fun) {
352 if (!encountered_strict_function_) { 352 if (!encountered_strict_function_) {
353 encountered_strict_function_ = is_strict(fun->shared()->language_mode()); 353 encountered_strict_function_ = is_strict(fun->shared()->language_mode());
354 } 354 }
355 return encountered_strict_function_; 355 return encountered_strict_function_;
356 } 356 }
357 357
358 // Determines whether the given stack frame should be displayed in a stack 358 // Determines whether the given stack frame should be displayed in a stack
359 // trace. 359 // trace.
360 bool IsVisibleInStackTrace(JSFunction* fun) { 360 bool IsVisibleInStackTrace(JSFunction* fun) {
361 return ShouldIncludeFrame(fun) && IsNotInNativeScript(fun) && 361 return ShouldIncludeFrame(fun) && IsNotHidden(fun) &&
362 IsInSameSecurityContext(fun); 362 IsInSameSecurityContext(fun);
363 } 363 }
364 364
365 private: 365 private:
366 // This mechanism excludes a number of uninteresting frames from the stack 366 // This mechanism excludes a number of uninteresting frames from the stack
367 // trace. This can be be the first frame (which will be a builtin-exit frame 367 // trace. This can be be the first frame (which will be a builtin-exit frame
368 // for the error constructor builtin) or every frame until encountering a 368 // for the error constructor builtin) or every frame until encountering a
369 // user-specified function. 369 // user-specified function.
370 bool ShouldIncludeFrame(JSFunction* fun) { 370 bool ShouldIncludeFrame(JSFunction* fun) {
371 switch (mode_) { 371 switch (mode_) {
372 case SKIP_NONE: 372 case SKIP_NONE:
373 return true; 373 return true;
374 case SKIP_FIRST: 374 case SKIP_FIRST:
375 if (!skip_next_frame_) return true; 375 if (!skip_next_frame_) return true;
376 skip_next_frame_ = false; 376 skip_next_frame_ = false;
377 return false; 377 return false;
378 case SKIP_UNTIL_SEEN: 378 case SKIP_UNTIL_SEEN:
379 if (skip_next_frame_ && (fun == *caller_)) { 379 if (skip_next_frame_ && (fun == *caller_)) {
380 skip_next_frame_ = false; 380 skip_next_frame_ = false;
381 return false; 381 return false;
382 } 382 }
383 return !skip_next_frame_; 383 return !skip_next_frame_;
384 } 384 }
385 UNREACHABLE(); 385 UNREACHABLE();
386 return false; 386 return false;
387 } 387 }
388 388
389 bool IsNotInNativeScript(JSFunction* fun) { 389 bool IsNotHidden(JSFunction* fun) {
390 // Functions defined in native scripts are not visible unless directly 390 // Functions defined not in user scripts are not visible unless directly
391 // exposed, in which case the native flag is set. 391 // exposed, in which case the native flag is set.
392 // The --builtins-in-stack-traces command line flag allows including 392 // The --builtins-in-stack-traces command line flag allows including
393 // internal call sites in the stack trace for debugging purposes. 393 // internal call sites in the stack trace for debugging purposes.
394 if (!FLAG_builtins_in_stack_traces && fun->shared()->IsBuiltin()) { 394 if (!FLAG_builtins_in_stack_traces && !fun->shared()->IsUserJavaScript()) {
395 return fun->shared()->native(); 395 return fun->shared()->native();
396 } 396 }
397 return true; 397 return true;
398 } 398 }
399 399
400 bool IsInSameSecurityContext(JSFunction* fun) { 400 bool IsInSameSecurityContext(JSFunction* fun) {
401 return isolate_->context()->HasSameSecurityTokenAs(fun->context()); 401 return isolate_->context()->HasSameSecurityTokenAs(fun->context());
402 } 402 }
403 403
404 Isolate* isolate_; 404 Isolate* isolate_;
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3504 // Then check whether this scope intercepts. 3504 // Then check whether this scope intercepts.
3505 if ((flag & intercept_mask_)) { 3505 if ((flag & intercept_mask_)) {
3506 intercepted_flags_ |= flag; 3506 intercepted_flags_ |= flag;
3507 return true; 3507 return true;
3508 } 3508 }
3509 return false; 3509 return false;
3510 } 3510 }
3511 3511
3512 } // namespace internal 3512 } // namespace internal
3513 } // namespace v8 3513 } // namespace v8
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