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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 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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4380 uint16_t char1 = stream1.GetNext(); | 4380 uint16_t char1 = stream1.GetNext(); |
4381 uint16_t char2 = stream2.GetNext(); | 4381 uint16_t char2 = stream2.GetNext(); |
4382 if (char1 != char2) return Smi::FromInt(char1 - char2); | 4382 if (char1 != char2) return Smi::FromInt(char1 - char2); |
4383 } | 4383 } |
4384 | 4384 |
4385 return Smi::FromInt(str1_length - str2_length); | 4385 return Smi::FromInt(str1_length - str2_length); |
4386 } | 4386 } |
4387 | 4387 |
4388 | 4388 |
4389 RUNTIME_FUNCTION(MaybeObject*, Runtime_SubString) { | 4389 RUNTIME_FUNCTION(MaybeObject*, Runtime_SubString) { |
4390 HandleScope scope(isolate); | 4390 SealHandleScope shs(isolate); |
4391 ASSERT(args.length() == 3); | 4391 ASSERT(args.length() == 3); |
4392 | 4392 |
4393 CONVERT_ARG_HANDLE_CHECKED(String, string, 0); | 4393 CONVERT_ARG_CHECKED(String, value, 0); |
4394 int start, end; | 4394 int start, end; |
4395 // We have a fast integer-only case here to avoid a conversion to double in | 4395 // We have a fast integer-only case here to avoid a conversion to double in |
4396 // the common case where from and to are Smis. | 4396 // the common case where from and to are Smis. |
4397 if (args[1]->IsSmi() && args[2]->IsSmi()) { | 4397 if (args[1]->IsSmi() && args[2]->IsSmi()) { |
4398 CONVERT_SMI_ARG_CHECKED(from_number, 1); | 4398 CONVERT_SMI_ARG_CHECKED(from_number, 1); |
4399 CONVERT_SMI_ARG_CHECKED(to_number, 2); | 4399 CONVERT_SMI_ARG_CHECKED(to_number, 2); |
4400 start = from_number; | 4400 start = from_number; |
4401 end = to_number; | 4401 end = to_number; |
4402 } else { | 4402 } else { |
4403 CONVERT_DOUBLE_ARG_CHECKED(from_number, 1); | 4403 CONVERT_DOUBLE_ARG_CHECKED(from_number, 1); |
4404 CONVERT_DOUBLE_ARG_CHECKED(to_number, 2); | 4404 CONVERT_DOUBLE_ARG_CHECKED(to_number, 2); |
4405 start = FastD2IChecked(from_number); | 4405 start = FastD2IChecked(from_number); |
4406 end = FastD2IChecked(to_number); | 4406 end = FastD2IChecked(to_number); |
4407 } | 4407 } |
4408 RUNTIME_ASSERT(end >= start); | 4408 RUNTIME_ASSERT(end >= start); |
4409 RUNTIME_ASSERT(start >= 0); | 4409 RUNTIME_ASSERT(start >= 0); |
4410 RUNTIME_ASSERT(end <= string->length()); | 4410 RUNTIME_ASSERT(end <= value->length()); |
4411 isolate->counters()->sub_string_runtime()->Increment(); | 4411 isolate->counters()->sub_string_runtime()->Increment(); |
4412 | 4412 if (end - start == 1) { |
4413 return *isolate->factory()->NewSubString(string, start, end); | 4413 return isolate->heap()->LookupSingleCharacterStringFromCode( |
| 4414 value->Get(start)); |
| 4415 } |
| 4416 return value->SubString(start, end); |
4414 } | 4417 } |
4415 | 4418 |
4416 | 4419 |
4417 RUNTIME_FUNCTION(MaybeObject*, Runtime_StringMatch) { | 4420 RUNTIME_FUNCTION(MaybeObject*, Runtime_StringMatch) { |
4418 HandleScope handles(isolate); | 4421 HandleScope handles(isolate); |
4419 ASSERT_EQ(3, args.length()); | 4422 ASSERT_EQ(3, args.length()); |
4420 | 4423 |
4421 CONVERT_ARG_HANDLE_CHECKED(String, subject, 0); | 4424 CONVERT_ARG_HANDLE_CHECKED(String, subject, 0); |
4422 CONVERT_ARG_HANDLE_CHECKED(JSRegExp, regexp, 1); | 4425 CONVERT_ARG_HANDLE_CHECKED(JSRegExp, regexp, 1); |
4423 CONVERT_ARG_HANDLE_CHECKED(JSArray, regexp_info, 2); | 4426 CONVERT_ARG_HANDLE_CHECKED(JSArray, regexp_info, 2); |
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6490 args, isolate, isolate->runtime_state()->to_upper_mapping()); | 6493 args, isolate, isolate->runtime_state()->to_upper_mapping()); |
6491 } | 6494 } |
6492 | 6495 |
6493 | 6496 |
6494 static inline bool IsTrimWhiteSpace(unibrow::uchar c) { | 6497 static inline bool IsTrimWhiteSpace(unibrow::uchar c) { |
6495 return unibrow::WhiteSpace::Is(c) || c == 0x200b || c == 0xfeff; | 6498 return unibrow::WhiteSpace::Is(c) || c == 0x200b || c == 0xfeff; |
6496 } | 6499 } |
6497 | 6500 |
6498 | 6501 |
6499 RUNTIME_FUNCTION(MaybeObject*, Runtime_StringTrim) { | 6502 RUNTIME_FUNCTION(MaybeObject*, Runtime_StringTrim) { |
6500 HandleScope scope(isolate); | 6503 SealHandleScope shs(isolate); |
6501 ASSERT(args.length() == 3); | 6504 ASSERT(args.length() == 3); |
6502 | 6505 |
6503 CONVERT_ARG_HANDLE_CHECKED(String, string, 0); | 6506 CONVERT_ARG_CHECKED(String, s, 0); |
6504 CONVERT_BOOLEAN_ARG_CHECKED(trimLeft, 1); | 6507 CONVERT_BOOLEAN_ARG_CHECKED(trimLeft, 1); |
6505 CONVERT_BOOLEAN_ARG_CHECKED(trimRight, 2); | 6508 CONVERT_BOOLEAN_ARG_CHECKED(trimRight, 2); |
6506 | 6509 |
6507 string = FlattenGetString(string); | 6510 s->TryFlatten(); |
6508 int length = string->length(); | 6511 int length = s->length(); |
6509 | 6512 |
6510 int left = 0; | 6513 int left = 0; |
6511 if (trimLeft) { | 6514 if (trimLeft) { |
6512 while (left < length && IsTrimWhiteSpace(string->Get(left))) { | 6515 while (left < length && IsTrimWhiteSpace(s->Get(left))) { |
6513 left++; | 6516 left++; |
6514 } | 6517 } |
6515 } | 6518 } |
6516 | 6519 |
6517 int right = length; | 6520 int right = length; |
6518 if (trimRight) { | 6521 if (trimRight) { |
6519 while (right > left && IsTrimWhiteSpace(string->Get(right - 1))) { | 6522 while (right > left && IsTrimWhiteSpace(s->Get(right - 1))) { |
6520 right--; | 6523 right--; |
6521 } | 6524 } |
6522 } | 6525 } |
6523 | 6526 return s->SubString(left, right); |
6524 return *isolate->factory()->NewSubString(string, left, right); | |
6525 } | 6527 } |
6526 | 6528 |
6527 | 6529 |
6528 RUNTIME_FUNCTION(MaybeObject*, Runtime_StringSplit) { | 6530 RUNTIME_FUNCTION(MaybeObject*, Runtime_StringSplit) { |
6529 HandleScope handle_scope(isolate); | 6531 HandleScope handle_scope(isolate); |
6530 ASSERT(args.length() == 3); | 6532 ASSERT(args.length() == 3); |
6531 CONVERT_ARG_HANDLE_CHECKED(String, subject, 0); | 6533 CONVERT_ARG_HANDLE_CHECKED(String, subject, 0); |
6532 CONVERT_ARG_HANDLE_CHECKED(String, pattern, 1); | 6534 CONVERT_ARG_HANDLE_CHECKED(String, pattern, 1); |
6533 CONVERT_NUMBER_CHECKED(uint32_t, limit, Uint32, args[2]); | 6535 CONVERT_NUMBER_CHECKED(uint32_t, limit, Uint32, args[2]); |
6534 | 6536 |
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6917 SealHandleScope shs(isolate); | 6919 SealHandleScope shs(isolate); |
6918 ASSERT(args.length() == 2); | 6920 ASSERT(args.length() == 2); |
6919 | 6921 |
6920 CONVERT_NUMBER_CHECKED(int32_t, x, Int32, args[0]); | 6922 CONVERT_NUMBER_CHECKED(int32_t, x, Int32, args[0]); |
6921 CONVERT_NUMBER_CHECKED(int32_t, y, Int32, args[1]); | 6923 CONVERT_NUMBER_CHECKED(int32_t, y, Int32, args[1]); |
6922 return isolate->heap()->NumberFromInt32(x * y); | 6924 return isolate->heap()->NumberFromInt32(x * y); |
6923 } | 6925 } |
6924 | 6926 |
6925 | 6927 |
6926 RUNTIME_FUNCTION(MaybeObject*, Runtime_StringAdd) { | 6928 RUNTIME_FUNCTION(MaybeObject*, Runtime_StringAdd) { |
6927 HandleScope scope(isolate); | 6929 SealHandleScope shs(isolate); |
6928 ASSERT(args.length() == 2); | 6930 ASSERT(args.length() == 2); |
6929 CONVERT_ARG_HANDLE_CHECKED(String, str1, 0); | 6931 CONVERT_ARG_CHECKED(String, str1, 0); |
6930 CONVERT_ARG_HANDLE_CHECKED(String, str2, 1); | 6932 CONVERT_ARG_CHECKED(String, str2, 1); |
6931 isolate->counters()->string_add_runtime()->Increment(); | 6933 isolate->counters()->string_add_runtime()->Increment(); |
6932 return *isolate->factory()->NewConsString(str1, str2); | 6934 return isolate->heap()->AllocateConsString(str1, str2); |
6933 } | 6935 } |
6934 | 6936 |
6935 | 6937 |
6936 template <typename sinkchar> | 6938 template <typename sinkchar> |
6937 static inline void StringBuilderConcatHelper(String* special, | 6939 static inline void StringBuilderConcatHelper(String* special, |
6938 sinkchar* sink, | 6940 sinkchar* sink, |
6939 FixedArray* fixed_array, | 6941 FixedArray* fixed_array, |
6940 int array_length) { | 6942 int array_length) { |
6941 int position = 0; | 6943 int position = 0; |
6942 for (int i = 0; i < array_length; i++) { | 6944 for (int i = 0; i < array_length; i++) { |
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14836 // Handle last resort GC and make sure to allow future allocations | 14838 // Handle last resort GC and make sure to allow future allocations |
14837 // to grow the heap without causing GCs (if possible). | 14839 // to grow the heap without causing GCs (if possible). |
14838 isolate->counters()->gc_last_resort_from_js()->Increment(); | 14840 isolate->counters()->gc_last_resort_from_js()->Increment(); |
14839 isolate->heap()->CollectAllGarbage(Heap::kNoGCFlags, | 14841 isolate->heap()->CollectAllGarbage(Heap::kNoGCFlags, |
14840 "Runtime::PerformGC"); | 14842 "Runtime::PerformGC"); |
14841 } | 14843 } |
14842 } | 14844 } |
14843 | 14845 |
14844 | 14846 |
14845 } } // namespace v8::internal | 14847 } } // namespace v8::internal |
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