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Issue 3258001: Fixing build error r5362 (adding missing files). (Closed) Base URL: http://v8.googlecode.com/svn/branches/bleeding_edge/
Patch Set: Created 10 years, 3 months ago
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1 // Copyright 2006-2009 the V8 project authors. All rights reserved. 1 // Copyright 2006-2009 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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4982 // Isolate the array index form the full hash field. 4982 // Isolate the array index form the full hash field.
4983 *index = (kArrayIndexHashMask & field) >> kHashShift; 4983 *index = (kArrayIndexHashMask & field) >> kHashShift;
4984 return true; 4984 return true;
4985 } else { 4985 } else {
4986 StringInputBuffer buffer(this); 4986 StringInputBuffer buffer(this);
4987 return ComputeArrayIndex(&buffer, index, length()); 4987 return ComputeArrayIndex(&buffer, index, length());
4988 } 4988 }
4989 } 4989 }
4990 4990
4991 4991
4992 static inline uint32_t HashField(uint32_t hash, 4992 uint32_t StringHasher::MakeCachedArrayIndex(uint32_t value, int length) {
4993 bool is_array_index, 4993 value <<= String::kHashShift;
4994 int length = -1) { 4994 // For array indexes mix the length into the hash as an array index could
4995 uint32_t result = (hash << String::kHashShift); 4995 // be zero.
4996 if (is_array_index) { 4996 ASSERT(length > 0);
4997 // For array indexes mix the length into the hash as an array index could 4997 ASSERT(length <= String::kMaxArrayIndexSize);
4998 // be zero. 4998 ASSERT(TenToThe(String::kMaxCachedArrayIndexLength) <
4999 ASSERT(length > 0); 4999 (1 << String::kArrayIndexValueBits));
5000 ASSERT(length <= String::kMaxArrayIndexSize); 5000 ASSERT(String::kMaxArrayIndexSize < (1 << String::kArrayIndexValueBits));
5001 ASSERT(TenToThe(String::kMaxCachedArrayIndexLength) < 5001 value &= ~String::kIsNotArrayIndexMask;
5002 (1 << String::kArrayIndexValueBits)); 5002 value |= length << String::kArrayIndexHashLengthShift;
5003 ASSERT(String::kMaxArrayIndexSize < (1 << String::kArrayIndexValueBits)); 5003 return value;
5004 result &= ~String::kIsNotArrayIndexMask;
5005 result |= length << String::kArrayIndexHashLengthShift;
5006 } else {
5007 result |= String::kIsNotArrayIndexMask;
5008 }
5009 return result;
5010 } 5004 }
5011 5005
5012 5006
5013 uint32_t StringHasher::GetHashField() { 5007 uint32_t StringHasher::GetHashField() {
5014 ASSERT(is_valid()); 5008 ASSERT(is_valid());
5015 if (length_ <= String::kMaxHashCalcLength) { 5009 if (length_ <= String::kMaxHashCalcLength) {
5016 if (is_array_index()) { 5010 if (is_array_index()) {
5017 return v8::internal::HashField(array_index(), true, length_); 5011 return MakeCachedArrayIndex(array_index(), length_);
5018 } else {
5019 return v8::internal::HashField(GetHash(), false);
5020 } 5012 }
5021 uint32_t payload = v8::internal::HashField(GetHash(), false); 5013 return (GetHash() << String::kHashShift) | String::kIsNotArrayIndexMask;
5022 return payload;
5023 } else { 5014 } else {
5024 return v8::internal::HashField(length_, false); 5015 return (length_ << String::kHashShift) | String::kIsNotArrayIndexMask;
5025 } 5016 }
5026 } 5017 }
5027 5018
5028 5019
5029 uint32_t String::ComputeHashField(unibrow::CharacterStream* buffer, 5020 uint32_t String::ComputeHashField(unibrow::CharacterStream* buffer,
5030 int length) { 5021 int length) {
5031 StringHasher hasher(length); 5022 StringHasher hasher(length);
5032 5023
5033 // Very long strings have a trivial hash that doesn't inspect the 5024 // Very long strings have a trivial hash that doesn't inspect the
5034 // string contents. 5025 // string contents.
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8896 if (break_point_objects()->IsUndefined()) return 0; 8887 if (break_point_objects()->IsUndefined()) return 0;
8897 // Single beak point. 8888 // Single beak point.
8898 if (!break_point_objects()->IsFixedArray()) return 1; 8889 if (!break_point_objects()->IsFixedArray()) return 1;
8899 // Multiple break points. 8890 // Multiple break points.
8900 return FixedArray::cast(break_point_objects())->length(); 8891 return FixedArray::cast(break_point_objects())->length();
8901 } 8892 }
8902 #endif 8893 #endif
8903 8894
8904 8895
8905 } } // namespace v8::internal 8896 } } // namespace v8::internal
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