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1 // Copyright 2006-2008 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2008 the V8 project authors. All rights reserved. |
2 | 2 |
3 // Check that we can traverse very deep stacks of ConsStrings using | 3 // Check that we can traverse very deep stacks of ConsStrings using |
4 // StringInputBuffer. Check that Get(int) works on very deep stacks | 4 // StringInputBuffer. Check that Get(int) works on very deep stacks |
5 // of ConsStrings. These operations may not be very fast, but they | 5 // of ConsStrings. These operations may not be very fast, but they |
6 // should be possible without getting errors due to too deep recursion. | 6 // should be possible without getting errors due to too deep recursion. |
7 | 7 |
8 #include <stdlib.h> | 8 #include <stdlib.h> |
9 | 9 |
10 #include "v8.h" | 10 #include "v8.h" |
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474 v8::Local<v8::Value> result = | 474 v8::Local<v8::Value> result = |
475 v8::Script::Compile(v8::String::New(line))->Run(); | 475 v8::Script::Compile(v8::String::New(line))->Run(); |
476 CHECK_EQ(results[i]->IsUndefined(), result->IsUndefined()); | 476 CHECK_EQ(results[i]->IsUndefined(), result->IsUndefined()); |
477 CHECK_EQ(results[i]->IsNumber(), result->IsNumber()); | 477 CHECK_EQ(results[i]->IsNumber(), result->IsNumber()); |
478 if (result->IsNumber()) { | 478 if (result->IsNumber()) { |
479 CHECK_EQ(Smi::cast(results[i]->ToSmi()->ToObjectChecked())->value(), | 479 CHECK_EQ(Smi::cast(results[i]->ToSmi()->ToObjectChecked())->value(), |
480 result->ToInt32()->Value()); | 480 result->ToInt32()->Value()); |
481 } | 481 } |
482 } | 482 } |
483 } | 483 } |
484 | |
485 | |
486 TEST(TruncateSlice) { | |
487 printf("Truncate Sliced String\n"); | |
488 FLAG_string_slices = true; | |
489 InitializeVM(); | |
490 v8::HandleScope scope; | |
491 Handle<String> string = | |
492 FACTORY->NewStringFromAscii(CStrVector("parentparentparent")); | |
493 Handle<String> parent = FACTORY->NewConsString(string, string); | |
494 CHECK(parent->IsConsString()); | |
495 CHECK(!parent->IsFlat()); | |
496 Handle<String> slice = FACTORY->NewSubString(parent, 1, 25); | |
497 CHECK(parent->IsFlat()); // After slicing, parent becomes flat. | |
498 CHECK(slice->IsSlicedString()); | |
499 CHECK(!slice->IsTruncated()); | |
500 CHECK(!slice->IsFlatAndTruncated()); | |
501 CHECK(slice->IsFlat()); | |
502 TruncateString(slice); | |
503 CHECK(slice->IsTruncated()); | |
504 CHECK(slice->IsFlatAndTruncated()); | |
505 } | |
506 | |
507 | |
508 TEST(TrivialSlice) { | |
509 // This tests whether a slice that contains the entire parent string | |
510 // actually creates a new string (it should not). | |
511 FLAG_string_slices = true; | |
512 InitializeVM(); | |
513 HandleScope scope; | |
514 v8::Local<v8::Value> result; | |
515 Handle<String> string; | |
516 const char* init = "var str = 'abcdefghijklmnopqrstuvwxyz';"; | |
517 const char* check = "str.slice(0,26)"; | |
518 const char* crosscheck = "str.slice(1,25)"; | |
519 | |
520 v8::Script::Compile(v8::String::New(init))->Run(); | |
521 | |
522 result = v8::Script::Compile(v8::String::New(check))->Run(); | |
antonm
2011/08/04 12:18:48
I think we have something like CompileAndRun
| |
523 CHECK(result->IsString()); | |
524 string = v8::Utils::OpenHandle(v8::String::Cast(*result)); | |
525 CHECK(!string->IsSlicedString()); | |
526 | |
527 string = FACTORY->NewSubString(string, 0, 26); | |
528 CHECK(!string->IsSlicedString()); | |
529 | |
530 result = v8::Script::Compile(v8::String::New(crosscheck))->Run(); | |
531 CHECK(result->IsString()); | |
532 string = v8::Utils::OpenHandle(v8::String::Cast(*result)); | |
533 CHECK(string->IsSlicedString()); | |
534 CHECK_EQ("bcdefghijklmnopqrstuvwxy", *(string->ToCString())); | |
535 } | |
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