Index: Source/WTF/wtf/text/StringImpl.h |
diff --git a/Source/WTF/wtf/text/StringImpl.h b/Source/WTF/wtf/text/StringImpl.h |
deleted file mode 100644 |
index 63296c65631741efc05b1daa3881bef2be862f23..0000000000000000000000000000000000000000 |
--- a/Source/WTF/wtf/text/StringImpl.h |
+++ /dev/null |
@@ -1,1193 +0,0 @@ |
-/* |
- * Copyright (C) 1999 Lars Knoll (knoll@kde.org) |
- * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2013 Apple Inc. All rights reserved. |
- * Copyright (C) 2009 Google Inc. All rights reserved. |
- * |
- * This library is free software; you can redistribute it and/or |
- * modify it under the terms of the GNU Library General Public |
- * License as published by the Free Software Foundation; either |
- * version 2 of the License, or (at your option) any later version. |
- * |
- * This library is distributed in the hope that it will be useful, |
- * but WITHOUT ANY WARRANTY; without even the implied warranty of |
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
- * Library General Public License for more details. |
- * |
- * You should have received a copy of the GNU Library General Public License |
- * along with this library; see the file COPYING.LIB. If not, write to |
- * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
- * Boston, MA 02110-1301, USA. |
- * |
- */ |
- |
-#ifndef StringImpl_h |
-#define StringImpl_h |
- |
-#include <limits.h> |
-#include <wtf/ASCIICType.h> |
-#include <wtf/Forward.h> |
-#include <wtf/StdLibExtras.h> |
-#include <wtf/StringHasher.h> |
-#include <wtf/Vector.h> |
-#include <wtf/unicode/Unicode.h> |
- |
-#if USE(CF) |
-typedef const struct __CFString * CFStringRef; |
-#endif |
- |
-#ifdef __OBJC__ |
-@class NSString; |
-#endif |
- |
-namespace WTF { |
- |
-struct CStringTranslator; |
-template<typename CharacterType> struct HashAndCharactersTranslator; |
-struct HashAndUTF8CharactersTranslator; |
-struct LCharBufferTranslator; |
-struct CharBufferFromLiteralDataTranslator; |
-class MemoryObjectInfo; |
-struct SubstringTranslator; |
-struct UCharBufferTranslator; |
-template<typename> class RetainPtr; |
- |
-enum TextCaseSensitivity { TextCaseSensitive, TextCaseInsensitive }; |
- |
-typedef bool (*CharacterMatchFunctionPtr)(UChar); |
-typedef bool (*IsWhiteSpaceFunctionPtr)(UChar); |
- |
-// Define STRING_STATS to turn on run time statistics of string sizes and memory usage |
-#undef STRING_STATS |
- |
-#ifdef STRING_STATS |
-struct StringStats { |
- inline void add8BitString(unsigned length, bool isSubString = false) |
- { |
- ++m_totalNumberStrings; |
- ++m_number8BitStrings; |
- if (!isSubString) |
- m_total8BitData += length; |
- } |
- |
- inline void add16BitString(unsigned length, bool isSubString = false) |
- { |
- ++m_totalNumberStrings; |
- ++m_number16BitStrings; |
- if (!isSubString) |
- m_total16BitData += length; |
- } |
- |
- inline void addUpconvertedString(unsigned length) |
- { |
- ++m_numberUpconvertedStrings; |
- m_totalUpconvertedData += length; |
- } |
- |
- void removeString(StringImpl*); |
- void printStats(); |
- |
- static const unsigned s_printStringStatsFrequency = 5000; |
- static unsigned s_stringRemovesTillPrintStats; |
- |
- unsigned m_totalNumberStrings; |
- unsigned m_number8BitStrings; |
- unsigned m_number16BitStrings; |
- unsigned m_numberUpconvertedStrings; |
- unsigned long long m_total8BitData; |
- unsigned long long m_total16BitData; |
- unsigned long long m_totalUpconvertedData; |
-}; |
- |
-#define STRING_STATS_ADD_8BIT_STRING(length) StringImpl::stringStats().add8BitString(length) |
-#define STRING_STATS_ADD_8BIT_STRING2(length, isSubString) StringImpl::stringStats().add8BitString(length, isSubString) |
-#define STRING_STATS_ADD_16BIT_STRING(length) StringImpl::stringStats().add16BitString(length) |
-#define STRING_STATS_ADD_16BIT_STRING2(length, isSubString) StringImpl::stringStats().add16BitString(length, isSubString) |
-#define STRING_STATS_ADD_UPCONVERTED_STRING(length) StringImpl::stringStats().addUpconvertedString(length) |
-#define STRING_STATS_REMOVE_STRING(string) StringImpl::stringStats().removeString(string) |
-#else |
-#define STRING_STATS_ADD_8BIT_STRING(length) ((void)0) |
-#define STRING_STATS_ADD_8BIT_STRING2(length, isSubString) ((void)0) |
-#define STRING_STATS_ADD_16BIT_STRING(length) ((void)0) |
-#define STRING_STATS_ADD_16BIT_STRING2(length, isSubString) ((void)0) |
-#define STRING_STATS_ADD_UPCONVERTED_STRING(length) ((void)0) |
-#define STRING_STATS_REMOVE_STRING(string) ((void)0) |
-#endif |
- |
-class StringImpl { |
- WTF_MAKE_NONCOPYABLE(StringImpl); WTF_MAKE_FAST_ALLOCATED; |
- friend struct WTF::CStringTranslator; |
- template<typename CharacterType> friend struct WTF::HashAndCharactersTranslator; |
- friend struct WTF::HashAndUTF8CharactersTranslator; |
- friend struct WTF::CharBufferFromLiteralDataTranslator; |
- friend struct WTF::LCharBufferTranslator; |
- friend struct WTF::SubstringTranslator; |
- friend struct WTF::UCharBufferTranslator; |
- friend class AtomicStringImpl; |
- |
-private: |
- enum BufferOwnership { |
- BufferInternal, |
- BufferOwned, |
- BufferSubstring, |
- // NOTE: Adding more ownership types needs to extend m_hashAndFlags as we're at capacity |
- }; |
- |
- // Used to construct static strings, which have an special refCount that can never hit zero. |
- // This means that the static string will never be destroyed, which is important because |
- // static strings will be shared across threads & ref-counted in a non-threadsafe manner. |
- enum ConstructStaticStringTag { ConstructStaticString }; |
- StringImpl(const UChar* characters, unsigned length, ConstructStaticStringTag) |
- : m_refCount(s_refCountFlagIsStaticString) |
- , m_length(length) |
- , m_data16(characters) |
- , m_buffer(0) |
- , m_hashAndFlags(s_hashFlagIsIdentifier | BufferOwned) |
- { |
- // Ensure that the hash is computed so that AtomicStringHash can call existingHash() |
- // with impunity. The empty string is special because it is never entered into |
- // AtomicString's HashKey, but still needs to compare correctly. |
- STRING_STATS_ADD_16BIT_STRING(m_length); |
- |
- hash(); |
- } |
- |
- // Used to construct static strings, which have an special refCount that can never hit zero. |
- // This means that the static string will never be destroyed, which is important because |
- // static strings will be shared across threads & ref-counted in a non-threadsafe manner. |
- StringImpl(const LChar* characters, unsigned length, ConstructStaticStringTag) |
- : m_refCount(s_refCountFlagIsStaticString) |
- , m_length(length) |
- , m_data8(characters) |
- , m_buffer(0) |
- , m_hashAndFlags(s_hashFlag8BitBuffer | s_hashFlagIsIdentifier | BufferOwned) |
- { |
- // Ensure that the hash is computed so that AtomicStringHash can call existingHash() |
- // with impunity. The empty string is special because it is never entered into |
- // AtomicString's HashKey, but still needs to compare correctly. |
- STRING_STATS_ADD_8BIT_STRING(m_length); |
- |
- hash(); |
- } |
- |
- // FIXME: there has to be a less hacky way to do this. |
- enum Force8Bit { Force8BitConstructor }; |
- // Create a normal 8-bit string with internal storage (BufferInternal) |
- StringImpl(unsigned length, Force8Bit) |
- : m_refCount(s_refCountIncrement) |
- , m_length(length) |
- , m_data8(reinterpret_cast<const LChar*>(this + 1)) |
- , m_buffer(0) |
- , m_hashAndFlags(s_hashFlag8BitBuffer | BufferInternal) |
- { |
- ASSERT(m_data8); |
- ASSERT(m_length); |
- |
- STRING_STATS_ADD_8BIT_STRING(m_length); |
- } |
- |
- // Create a normal 16-bit string with internal storage (BufferInternal) |
- StringImpl(unsigned length) |
- : m_refCount(s_refCountIncrement) |
- , m_length(length) |
- , m_data16(reinterpret_cast<const UChar*>(this + 1)) |
- , m_buffer(0) |
- , m_hashAndFlags(BufferInternal) |
- { |
- ASSERT(m_data16); |
- ASSERT(m_length); |
- |
- STRING_STATS_ADD_16BIT_STRING(m_length); |
- } |
- |
- // Create a StringImpl adopting ownership of the provided buffer (BufferOwned) |
- StringImpl(const LChar* characters, unsigned length) |
- : m_refCount(s_refCountIncrement) |
- , m_length(length) |
- , m_data8(characters) |
- , m_buffer(0) |
- , m_hashAndFlags(s_hashFlag8BitBuffer | BufferOwned) |
- { |
- ASSERT(m_data8); |
- ASSERT(m_length); |
- |
- STRING_STATS_ADD_8BIT_STRING(m_length); |
- } |
- |
- enum ConstructFromLiteralTag { ConstructFromLiteral }; |
- StringImpl(const char* characters, unsigned length, ConstructFromLiteralTag) |
- : m_refCount(s_refCountIncrement) |
- , m_length(length) |
- , m_data8(reinterpret_cast<const LChar*>(characters)) |
- , m_buffer(0) |
- , m_hashAndFlags(s_hashFlag8BitBuffer | BufferInternal | s_hashFlagHasTerminatingNullCharacter) |
- { |
- ASSERT(m_data8); |
- ASSERT(m_length); |
- ASSERT(!characters[length]); |
- |
- STRING_STATS_ADD_8BIT_STRING(0); |
- } |
- |
- // Create a StringImpl adopting ownership of the provided buffer (BufferOwned) |
- StringImpl(const UChar* characters, unsigned length) |
- : m_refCount(s_refCountIncrement) |
- , m_length(length) |
- , m_data16(characters) |
- , m_buffer(0) |
- , m_hashAndFlags(BufferOwned) |
- { |
- ASSERT(m_data16); |
- ASSERT(m_length); |
- |
- STRING_STATS_ADD_16BIT_STRING(m_length); |
- } |
- |
- // Used to create new strings that are a substring of an existing 8-bit StringImpl (BufferSubstring) |
- StringImpl(const LChar* characters, unsigned length, PassRefPtr<StringImpl> base) |
- : m_refCount(s_refCountIncrement) |
- , m_length(length) |
- , m_data8(characters) |
- , m_substringBuffer(base.leakRef()) |
- , m_hashAndFlags(s_hashFlag8BitBuffer | BufferSubstring) |
- { |
- ASSERT(is8Bit()); |
- ASSERT(m_data8); |
- ASSERT(m_length); |
- ASSERT(m_substringBuffer->bufferOwnership() != BufferSubstring); |
- |
- STRING_STATS_ADD_8BIT_STRING2(m_length, true); |
- } |
- |
- // Used to create new strings that are a substring of an existing 16-bit StringImpl (BufferSubstring) |
- StringImpl(const UChar* characters, unsigned length, PassRefPtr<StringImpl> base) |
- : m_refCount(s_refCountIncrement) |
- , m_length(length) |
- , m_data16(characters) |
- , m_substringBuffer(base.leakRef()) |
- , m_hashAndFlags(BufferSubstring) |
- { |
- ASSERT(!is8Bit()); |
- ASSERT(m_data16); |
- ASSERT(m_length); |
- ASSERT(m_substringBuffer->bufferOwnership() != BufferSubstring); |
- |
- STRING_STATS_ADD_16BIT_STRING2(m_length, true); |
- } |
- |
- enum CreateEmptyUnique_T { CreateEmptyUnique }; |
- StringImpl(CreateEmptyUnique_T) |
- : m_refCount(s_refCountIncrement) |
- , m_length(0) |
- , m_data16(reinterpret_cast<const UChar*>(1)) |
- , m_buffer(0) |
- { |
- ASSERT(m_data16); |
- // Set the hash early, so that all empty unique StringImpls have a hash, |
- // and don't use the normal hashing algorithm - the unique nature of these |
- // keys means that we don't need them to match any other string (in fact, |
- // that's exactly the oposite of what we want!), and teh normal hash would |
- // lead to lots of conflicts. |
- unsigned hash = reinterpret_cast<uintptr_t>(this); |
- hash <<= s_flagCount; |
- if (!hash) |
- hash = 1 << s_flagCount; |
- m_hashAndFlags = hash | BufferInternal; |
- |
- STRING_STATS_ADD_16BIT_STRING(m_length); |
- } |
-public: |
- WTF_EXPORT_STRING_API ~StringImpl(); |
- |
- WTF_EXPORT_STRING_API static PassRefPtr<StringImpl> create(const UChar*, unsigned length); |
- WTF_EXPORT_STRING_API static PassRefPtr<StringImpl> create(const LChar*, unsigned length); |
- WTF_EXPORT_STRING_API static PassRefPtr<StringImpl> create8BitIfPossible(const UChar*, unsigned length); |
- template<size_t inlineCapacity> |
- static PassRefPtr<StringImpl> create8BitIfPossible(const Vector<UChar, inlineCapacity>& vector) |
- { |
- return create8BitIfPossible(vector.data(), vector.size()); |
- } |
- |
- ALWAYS_INLINE static PassRefPtr<StringImpl> create(const char* s, unsigned length) { return create(reinterpret_cast<const LChar*>(s), length); } |
- WTF_EXPORT_STRING_API static PassRefPtr<StringImpl> create(const LChar*); |
- ALWAYS_INLINE static PassRefPtr<StringImpl> create(const char* s) { return create(reinterpret_cast<const LChar*>(s)); } |
- |
- static ALWAYS_INLINE PassRefPtr<StringImpl> create8(PassRefPtr<StringImpl> rep, unsigned offset, unsigned length) |
- { |
- ASSERT(rep); |
- ASSERT(length <= rep->length()); |
- |
- if (!length) |
- return empty(); |
- |
- ASSERT(rep->is8Bit()); |
- StringImpl* ownerRep = (rep->bufferOwnership() == BufferSubstring) ? rep->m_substringBuffer : rep.get(); |
- return adoptRef(new StringImpl(rep->m_data8 + offset, length, ownerRep)); |
- } |
- |
- static ALWAYS_INLINE PassRefPtr<StringImpl> create(PassRefPtr<StringImpl> rep, unsigned offset, unsigned length) |
- { |
- ASSERT(rep); |
- ASSERT(length <= rep->length()); |
- |
- if (!length) |
- return empty(); |
- |
- StringImpl* ownerRep = (rep->bufferOwnership() == BufferSubstring) ? rep->m_substringBuffer : rep.get(); |
- if (rep->is8Bit()) |
- return adoptRef(new StringImpl(rep->m_data8 + offset, length, ownerRep)); |
- return adoptRef(new StringImpl(rep->m_data16 + offset, length, ownerRep)); |
- } |
- |
- WTF_EXPORT_STRING_API static PassRefPtr<StringImpl> createFromLiteral(const char* characters, unsigned length); |
- template<unsigned charactersCount> |
- ALWAYS_INLINE static PassRefPtr<StringImpl> createFromLiteral(const char (&characters)[charactersCount]) |
- { |
- COMPILE_ASSERT(charactersCount > 1, StringImplFromLiteralNotEmpty); |
- COMPILE_ASSERT((charactersCount - 1 <= ((unsigned(~0) - sizeof(StringImpl)) / sizeof(LChar))), StringImplFromLiteralCannotOverflow); |
- |
- return createFromLiteral(characters, charactersCount - 1); |
- } |
- WTF_EXPORT_STRING_API static PassRefPtr<StringImpl> createFromLiteral(const char* characters); |
- |
- WTF_EXPORT_STRING_API static PassRefPtr<StringImpl> createUninitialized(unsigned length, LChar*& data); |
- WTF_EXPORT_STRING_API static PassRefPtr<StringImpl> createUninitialized(unsigned length, UChar*& data); |
- template <typename T> static ALWAYS_INLINE PassRefPtr<StringImpl> tryCreateUninitialized(unsigned length, T*& output) |
- { |
- if (!length) { |
- output = 0; |
- return empty(); |
- } |
- |
- if (length > ((std::numeric_limits<unsigned>::max() - sizeof(StringImpl)) / sizeof(T))) { |
- output = 0; |
- return 0; |
- } |
- StringImpl* resultImpl; |
- if (!tryFastMalloc(sizeof(T) * length + sizeof(StringImpl)).getValue(resultImpl)) { |
- output = 0; |
- return 0; |
- } |
- output = reinterpret_cast<T*>(resultImpl + 1); |
- |
- if (sizeof(T) == sizeof(char)) |
- return adoptRef(new (NotNull, resultImpl) StringImpl(length, Force8BitConstructor)); |
- |
- return adoptRef(new (NotNull, resultImpl) StringImpl(length)); |
- } |
- |
- static PassRefPtr<StringImpl> createEmptyUnique() |
- { |
- return adoptRef(new StringImpl(CreateEmptyUnique)); |
- } |
- |
- // Reallocate the StringImpl. The originalString must be only owned by the PassRefPtr, |
- // and the buffer ownership must be BufferInternal. Just like the input pointer of realloc(), |
- // the originalString can't be used after this function. |
- static PassRefPtr<StringImpl> reallocate(PassRefPtr<StringImpl> originalString, unsigned length, LChar*& data); |
- static PassRefPtr<StringImpl> reallocate(PassRefPtr<StringImpl> originalString, unsigned length, UChar*& data); |
- |
- static unsigned flagsOffset() { return OBJECT_OFFSETOF(StringImpl, m_hashAndFlags); } |
- static unsigned flagIs8Bit() { return s_hashFlag8BitBuffer; } |
- static unsigned dataOffset() { return OBJECT_OFFSETOF(StringImpl, m_data8); } |
- static PassRefPtr<StringImpl> createWithTerminatingNullCharacter(const StringImpl&); |
- |
- template<typename CharType, size_t inlineCapacity> |
- static PassRefPtr<StringImpl> adopt(Vector<CharType, inlineCapacity>& vector) |
- { |
- if (size_t size = vector.size()) { |
- ASSERT(vector.data()); |
- RELEASE_ASSERT(size <= std::numeric_limits<unsigned>::max()); |
- return adoptRef(new StringImpl(vector.releaseBuffer(), size)); |
- } |
- return empty(); |
- } |
- |
- WTF_EXPORT_STRING_API static PassRefPtr<StringImpl> adopt(StringBuffer<UChar>&); |
- WTF_EXPORT_STRING_API static PassRefPtr<StringImpl> adopt(StringBuffer<LChar>&); |
- |
- unsigned length() const { return m_length; } |
- bool is8Bit() const { return m_hashAndFlags & s_hashFlag8BitBuffer; } |
- bool hasInternalBuffer() const { return bufferOwnership() == BufferInternal; } |
- bool hasOwnedBuffer() const { return bufferOwnership() == BufferOwned; } |
- StringImpl* baseString() const { return bufferOwnership() == BufferSubstring ? m_substringBuffer : 0; } |
- |
- // FIXME: Remove all unnecessary usages of characters() |
- ALWAYS_INLINE const LChar* characters8() const { ASSERT(is8Bit()); return m_data8; } |
- ALWAYS_INLINE const UChar* characters16() const { ASSERT(!is8Bit()); return m_data16; } |
- ALWAYS_INLINE const UChar* characters() const |
- { |
- if (!is8Bit()) |
- return m_data16; |
- |
- return getData16SlowCase(); |
- } |
- |
- template <typename CharType> |
- ALWAYS_INLINE const CharType * getCharacters() const; |
- |
- size_t cost() |
- { |
- // For substrings, return the cost of the base string. |
- if (bufferOwnership() == BufferSubstring) |
- return m_substringBuffer->cost(); |
- |
- if (m_hashAndFlags & s_hashFlagDidReportCost) |
- return 0; |
- |
- m_hashAndFlags |= s_hashFlagDidReportCost; |
- return m_length; |
- } |
- |
- WTF_EXPORT_STRING_API size_t sizeInBytes() const; |
- |
- bool has16BitShadow() const { return m_hashAndFlags & s_hashFlagHas16BitShadow; } |
- WTF_EXPORT_STRING_API void upconvertCharacters(unsigned, unsigned) const; |
- bool isIdentifier() const { return m_hashAndFlags & s_hashFlagIsIdentifier; } |
- void setIsIdentifier(bool isIdentifier) |
- { |
- ASSERT(!isStatic()); |
- if (isIdentifier) |
- m_hashAndFlags |= s_hashFlagIsIdentifier; |
- else |
- m_hashAndFlags &= ~s_hashFlagIsIdentifier; |
- } |
- |
- bool isEmptyUnique() const |
- { |
- return !length() && !isStatic(); |
- } |
- |
- bool hasTerminatingNullCharacter() const { return m_hashAndFlags & s_hashFlagHasTerminatingNullCharacter; } |
- |
- bool isAtomic() const { return m_hashAndFlags & s_hashFlagIsAtomic; } |
- void setIsAtomic(bool isAtomic) |
- { |
- if (isAtomic) |
- m_hashAndFlags |= s_hashFlagIsAtomic; |
- else |
- m_hashAndFlags &= ~s_hashFlagIsAtomic; |
- } |
- |
- bool isStatic() const { return m_refCount & s_refCountFlagIsStaticString; } |
- |
-#ifdef STRING_STATS |
- bool isSubString() const { return bufferOwnership() == BufferSubstring; } |
-#endif |
- |
-private: |
- // The high bits of 'hash' are always empty, but we prefer to store our flags |
- // in the low bits because it makes them slightly more efficient to access. |
- // So, we shift left and right when setting and getting our hash code. |
- void setHash(unsigned hash) const |
- { |
- ASSERT(!hasHash()); |
- // Multiple clients assume that StringHasher is the canonical string hash function. |
- ASSERT(hash == (is8Bit() ? StringHasher::computeHashAndMaskTop8Bits(m_data8, m_length) : StringHasher::computeHashAndMaskTop8Bits(m_data16, m_length))); |
- ASSERT(!(hash & (s_flagMask << (8 * sizeof(hash) - s_flagCount)))); // Verify that enough high bits are empty. |
- |
- hash <<= s_flagCount; |
- ASSERT(!(hash & m_hashAndFlags)); // Verify that enough low bits are empty after shift. |
- ASSERT(hash); // Verify that 0 is a valid sentinel hash value. |
- |
- m_hashAndFlags |= hash; // Store hash with flags in low bits. |
- } |
- |
- unsigned rawHash() const |
- { |
- return m_hashAndFlags >> s_flagCount; |
- } |
- |
-public: |
- bool hasHash() const |
- { |
- return rawHash() != 0; |
- } |
- |
- unsigned existingHash() const |
- { |
- ASSERT(hasHash()); |
- return rawHash(); |
- } |
- |
- unsigned hash() const |
- { |
- if (hasHash()) |
- return existingHash(); |
- return hashSlowCase(); |
- } |
- |
- inline bool hasOneRef() const |
- { |
- return m_refCount == s_refCountIncrement; |
- } |
- |
- inline void ref() |
- { |
- m_refCount += s_refCountIncrement; |
- } |
- |
- inline void deref() |
- { |
- if (m_refCount == s_refCountIncrement) { |
- delete this; |
- return; |
- } |
- |
- m_refCount -= s_refCountIncrement; |
- } |
- |
- WTF_EXPORT_PRIVATE static StringImpl* empty(); |
- |
- // FIXME: Does this really belong in StringImpl? |
- template <typename T> static void copyChars(T* destination, const T* source, unsigned numCharacters) |
- { |
- if (numCharacters == 1) { |
- *destination = *source; |
- return; |
- } |
- |
- if (numCharacters <= s_copyCharsInlineCutOff) { |
- unsigned i = 0; |
-#if (CPU(X86) || CPU(X86_64)) |
- const unsigned charsPerInt = sizeof(uint32_t) / sizeof(T); |
- |
- if (numCharacters > charsPerInt) { |
- unsigned stopCount = numCharacters & ~(charsPerInt - 1); |
- |
- const uint32_t* srcCharacters = reinterpret_cast<const uint32_t*>(source); |
- uint32_t* destCharacters = reinterpret_cast<uint32_t*>(destination); |
- for (unsigned j = 0; i < stopCount; i += charsPerInt, ++j) |
- destCharacters[j] = srcCharacters[j]; |
- } |
-#endif |
- for (; i < numCharacters; ++i) |
- destination[i] = source[i]; |
- } else |
- memcpy(destination, source, numCharacters * sizeof(T)); |
- } |
- |
- ALWAYS_INLINE static void copyChars(UChar* destination, const LChar* source, unsigned numCharacters) |
- { |
- for (unsigned i = 0; i < numCharacters; ++i) |
- destination[i] = source[i]; |
- } |
- |
- // Some string features, like refcounting and the atomicity flag, are not |
- // thread-safe. We achieve thread safety by isolation, giving each thread |
- // its own copy of the string. |
- PassRefPtr<StringImpl> isolatedCopy() const; |
- |
- WTF_EXPORT_STRING_API PassRefPtr<StringImpl> substring(unsigned pos, unsigned len = UINT_MAX); |
- |
- UChar operator[](unsigned i) const |
- { |
- ASSERT_WITH_SECURITY_IMPLICATION(i < m_length); |
- if (is8Bit()) |
- return m_data8[i]; |
- return m_data16[i]; |
- } |
- WTF_EXPORT_STRING_API UChar32 characterStartingAt(unsigned); |
- |
- WTF_EXPORT_STRING_API bool containsOnlyWhitespace(); |
- |
- int toIntStrict(bool* ok = 0, int base = 10); |
- unsigned toUIntStrict(bool* ok = 0, int base = 10); |
- int64_t toInt64Strict(bool* ok = 0, int base = 10); |
- uint64_t toUInt64Strict(bool* ok = 0, int base = 10); |
- intptr_t toIntPtrStrict(bool* ok = 0, int base = 10); |
- |
- WTF_EXPORT_STRING_API int toInt(bool* ok = 0); // ignores trailing garbage |
- unsigned toUInt(bool* ok = 0); // ignores trailing garbage |
- int64_t toInt64(bool* ok = 0); // ignores trailing garbage |
- uint64_t toUInt64(bool* ok = 0); // ignores trailing garbage |
- intptr_t toIntPtr(bool* ok = 0); // ignores trailing garbage |
- |
- // FIXME: Like the strict functions above, these give false for "ok" when there is trailing garbage. |
- // Like the non-strict functions above, these return the value when there is trailing garbage. |
- // It would be better if these were more consistent with the above functions instead. |
- double toDouble(bool* ok = 0); |
- float toFloat(bool* ok = 0); |
- |
- WTF_EXPORT_STRING_API PassRefPtr<StringImpl> lower(); |
- WTF_EXPORT_STRING_API PassRefPtr<StringImpl> upper(); |
- |
- WTF_EXPORT_STRING_API PassRefPtr<StringImpl> fill(UChar); |
- // FIXME: Do we need fill(char) or can we just do the right thing if UChar is ASCII? |
- PassRefPtr<StringImpl> foldCase(); |
- |
- PassRefPtr<StringImpl> stripWhiteSpace(); |
- PassRefPtr<StringImpl> stripWhiteSpace(IsWhiteSpaceFunctionPtr); |
- WTF_EXPORT_STRING_API PassRefPtr<StringImpl> simplifyWhiteSpace(); |
- PassRefPtr<StringImpl> simplifyWhiteSpace(IsWhiteSpaceFunctionPtr); |
- |
- PassRefPtr<StringImpl> removeCharacters(CharacterMatchFunctionPtr); |
- template <typename CharType> |
- ALWAYS_INLINE PassRefPtr<StringImpl> removeCharacters(const CharType* characters, CharacterMatchFunctionPtr); |
- |
- size_t find(LChar character, unsigned start = 0); |
- size_t find(char character, unsigned start = 0); |
- size_t find(UChar character, unsigned start = 0); |
- WTF_EXPORT_STRING_API size_t find(CharacterMatchFunctionPtr, unsigned index = 0); |
- size_t find(const LChar*, unsigned index = 0); |
- ALWAYS_INLINE size_t find(const char* s, unsigned index = 0) { return find(reinterpret_cast<const LChar*>(s), index); } |
- WTF_EXPORT_STRING_API size_t find(StringImpl*); |
- WTF_EXPORT_STRING_API size_t find(StringImpl*, unsigned index); |
- size_t findIgnoringCase(const LChar*, unsigned index = 0); |
- ALWAYS_INLINE size_t findIgnoringCase(const char* s, unsigned index = 0) { return findIgnoringCase(reinterpret_cast<const LChar*>(s), index); } |
- WTF_EXPORT_STRING_API size_t findIgnoringCase(StringImpl*, unsigned index = 0); |
- |
- WTF_EXPORT_STRING_API size_t findNextLineStart(unsigned index = UINT_MAX); |
- |
- WTF_EXPORT_STRING_API size_t reverseFind(UChar, unsigned index = UINT_MAX); |
- WTF_EXPORT_STRING_API size_t reverseFind(StringImpl*, unsigned index = UINT_MAX); |
- WTF_EXPORT_STRING_API size_t reverseFindIgnoringCase(StringImpl*, unsigned index = UINT_MAX); |
- |
- bool startsWith(StringImpl* str, bool caseSensitive = true) { return (caseSensitive ? reverseFind(str, 0) : reverseFindIgnoringCase(str, 0)) == 0; } |
- WTF_EXPORT_STRING_API bool startsWith(UChar) const; |
- WTF_EXPORT_STRING_API bool startsWith(const char*, unsigned matchLength, bool caseSensitive) const; |
- template<unsigned matchLength> |
- bool startsWith(const char (&prefix)[matchLength], bool caseSensitive = true) const { return startsWith(prefix, matchLength - 1, caseSensitive); } |
- |
- WTF_EXPORT_STRING_API bool endsWith(StringImpl*, bool caseSensitive = true); |
- WTF_EXPORT_STRING_API bool endsWith(UChar) const; |
- WTF_EXPORT_STRING_API bool endsWith(const char*, unsigned matchLength, bool caseSensitive) const; |
- template<unsigned matchLength> |
- bool endsWith(const char (&prefix)[matchLength], bool caseSensitive = true) const { return endsWith(prefix, matchLength - 1, caseSensitive); } |
- |
- WTF_EXPORT_STRING_API PassRefPtr<StringImpl> replace(UChar, UChar); |
- WTF_EXPORT_STRING_API PassRefPtr<StringImpl> replace(UChar, StringImpl*); |
- ALWAYS_INLINE PassRefPtr<StringImpl> replace(UChar pattern, const char* replacement, unsigned replacementLength) { return replace(pattern, reinterpret_cast<const LChar*>(replacement), replacementLength); } |
- WTF_EXPORT_STRING_API PassRefPtr<StringImpl> replace(UChar, const LChar*, unsigned replacementLength); |
- PassRefPtr<StringImpl> replace(UChar, const UChar*, unsigned replacementLength); |
- WTF_EXPORT_STRING_API PassRefPtr<StringImpl> replace(StringImpl*, StringImpl*); |
- WTF_EXPORT_STRING_API PassRefPtr<StringImpl> replace(unsigned index, unsigned len, StringImpl*); |
- |
- WTF_EXPORT_STRING_API WTF::Unicode::Direction defaultWritingDirection(bool* hasStrongDirectionality = 0); |
- |
-#if USE(CF) |
- RetainPtr<CFStringRef> createCFString(); |
-#endif |
-#ifdef __OBJC__ |
- operator NSString*(); |
-#endif |
- |
-#ifdef STRING_STATS |
- ALWAYS_INLINE static StringStats& stringStats() { return m_stringStats; } |
-#endif |
- |
-private: |
- |
- bool isASCIILiteral() const |
- { |
- return is8Bit() && hasInternalBuffer() && reinterpret_cast<const void*>(m_data8) != reinterpret_cast<const void*>(this + 1); |
- } |
- |
- // This number must be at least 2 to avoid sharing empty, null as well as 1 character strings from SmallStrings. |
- static const unsigned s_copyCharsInlineCutOff = 20; |
- |
- BufferOwnership bufferOwnership() const { return static_cast<BufferOwnership>(m_hashAndFlags & s_hashMaskBufferOwnership); } |
- template <class UCharPredicate> PassRefPtr<StringImpl> stripMatchedCharacters(UCharPredicate); |
- template <typename CharType, class UCharPredicate> PassRefPtr<StringImpl> simplifyMatchedCharactersToSpace(UCharPredicate); |
- WTF_EXPORT_STRING_API NEVER_INLINE const UChar* getData16SlowCase() const; |
- WTF_EXPORT_PRIVATE NEVER_INLINE unsigned hashSlowCase() const; |
- |
- // The bottom bit in the ref count indicates a static (immortal) string. |
- static const unsigned s_refCountFlagIsStaticString = 0x1; |
- static const unsigned s_refCountIncrement = 0x2; // This allows us to ref / deref without disturbing the static string flag. |
- |
- // The bottom 8 bits in the hash are flags. |
- static const unsigned s_flagCount = 8; |
- static const unsigned s_flagMask = (1u << s_flagCount) - 1; |
- COMPILE_ASSERT(s_flagCount == StringHasher::flagCount, StringHasher_reserves_enough_bits_for_StringImpl_flags); |
- |
- static const unsigned s_hashFlagHas16BitShadow = 1u << 7; |
- static const unsigned s_hashFlag8BitBuffer = 1u << 6; |
- static const unsigned s_hashFlagHasTerminatingNullCharacter = 1u << 5; |
- static const unsigned s_hashFlagIsAtomic = 1u << 4; |
- static const unsigned s_hashFlagDidReportCost = 1u << 3; |
- static const unsigned s_hashFlagIsIdentifier = 1u << 2; |
- static const unsigned s_hashMaskBufferOwnership = 1u | (1u << 1); |
- |
-#ifdef STRING_STATS |
- WTF_EXPORTDATA static StringStats m_stringStats; |
-#endif |
- |
-public: |
- struct StaticASCIILiteral { |
- // These member variables must match the layout of StringImpl. |
- unsigned m_refCount; |
- unsigned m_length; |
- const LChar* m_data8; |
- const UChar* m_copyData16; |
- unsigned m_hashAndFlags; |
- |
- static const unsigned s_initialRefCount = s_refCountFlagIsStaticString; |
- static const unsigned s_initialFlags = s_hashFlag8BitBuffer | s_hashFlagHas16BitShadow | BufferInternal | s_hashFlagHasTerminatingNullCharacter; |
- static const unsigned s_hashShift = s_flagCount; |
- }; |
- |
-#ifndef NDEBUG |
- void assertHashIsCorrect() |
- { |
- ASSERT(hasHash()); |
- ASSERT(existingHash() == StringHasher::computeHashAndMaskTop8Bits(characters8(), length())); |
- } |
-#endif |
- |
-private: |
- // These member variables must match the layout of StaticASCIILiteral. |
- unsigned m_refCount; |
- unsigned m_length; |
- union { |
- const LChar* m_data8; |
- const UChar* m_data16; |
- }; |
- union { |
- void* m_buffer; |
- StringImpl* m_substringBuffer; |
- mutable UChar* m_copyData16; |
- }; |
- mutable unsigned m_hashAndFlags; |
-}; |
- |
-COMPILE_ASSERT(sizeof(StringImpl) == sizeof(StringImpl::StaticASCIILiteral), StringImpl_should_match_its_StaticASCIILiteral); |
- |
-#if !ASSERT_DISABLED |
-// StringImpls created from StaticASCIILiteral will ASSERT |
-// in the generic ValueCheck<T>::checkConsistency |
-// as they are not allocated by fastMalloc. |
-// We don't currently have any way to detect that case |
-// so we ignore the consistency check for all StringImpl*. |
-template<> struct |
-ValueCheck<StringImpl*> { |
- static void checkConsistency(const StringImpl*) { } |
-}; |
-#endif |
- |
-template <> |
-ALWAYS_INLINE const LChar* StringImpl::getCharacters<LChar>() const { return characters8(); } |
- |
-template <> |
-ALWAYS_INLINE const UChar* StringImpl::getCharacters<UChar>() const { return characters(); } |
- |
-WTF_EXPORT_STRING_API bool equal(const StringImpl*, const StringImpl*); |
-WTF_EXPORT_STRING_API bool equal(const StringImpl*, const LChar*); |
-inline bool equal(const StringImpl* a, const char* b) { return equal(a, reinterpret_cast<const LChar*>(b)); } |
-WTF_EXPORT_STRING_API bool equal(const StringImpl*, const LChar*, unsigned); |
-inline bool equal(const StringImpl* a, const char* b, unsigned length) { return equal(a, reinterpret_cast<const LChar*>(b), length); } |
-inline bool equal(const LChar* a, StringImpl* b) { return equal(b, a); } |
-inline bool equal(const char* a, StringImpl* b) { return equal(b, reinterpret_cast<const LChar*>(a)); } |
-WTF_EXPORT_STRING_API bool equal(const StringImpl*, const UChar*, unsigned); |
-WTF_EXPORT_STRING_API bool equalNonNull(const StringImpl* a, const StringImpl* b); |
- |
-// Do comparisons 8 or 4 bytes-at-a-time on architectures where it's safe. |
-#if CPU(X86_64) |
-ALWAYS_INLINE bool equal(const LChar* a, const LChar* b, unsigned length) |
-{ |
- unsigned dwordLength = length >> 3; |
- |
- if (dwordLength) { |
- const uint64_t* aDWordCharacters = reinterpret_cast<const uint64_t*>(a); |
- const uint64_t* bDWordCharacters = reinterpret_cast<const uint64_t*>(b); |
- |
- for (unsigned i = 0; i != dwordLength; ++i) { |
- if (*aDWordCharacters++ != *bDWordCharacters++) |
- return false; |
- } |
- |
- a = reinterpret_cast<const LChar*>(aDWordCharacters); |
- b = reinterpret_cast<const LChar*>(bDWordCharacters); |
- } |
- |
- if (length & 4) { |
- if (*reinterpret_cast<const uint32_t*>(a) != *reinterpret_cast<const uint32_t*>(b)) |
- return false; |
- |
- a += 4; |
- b += 4; |
- } |
- |
- if (length & 2) { |
- if (*reinterpret_cast<const uint16_t*>(a) != *reinterpret_cast<const uint16_t*>(b)) |
- return false; |
- |
- a += 2; |
- b += 2; |
- } |
- |
- if (length & 1 && (*a != *b)) |
- return false; |
- |
- return true; |
-} |
- |
-ALWAYS_INLINE bool equal(const UChar* a, const UChar* b, unsigned length) |
-{ |
- unsigned dwordLength = length >> 2; |
- |
- if (dwordLength) { |
- const uint64_t* aDWordCharacters = reinterpret_cast<const uint64_t*>(a); |
- const uint64_t* bDWordCharacters = reinterpret_cast<const uint64_t*>(b); |
- |
- for (unsigned i = 0; i != dwordLength; ++i) { |
- if (*aDWordCharacters++ != *bDWordCharacters++) |
- return false; |
- } |
- |
- a = reinterpret_cast<const UChar*>(aDWordCharacters); |
- b = reinterpret_cast<const UChar*>(bDWordCharacters); |
- } |
- |
- if (length & 2) { |
- if (*reinterpret_cast<const uint32_t*>(a) != *reinterpret_cast<const uint32_t*>(b)) |
- return false; |
- |
- a += 2; |
- b += 2; |
- } |
- |
- if (length & 1 && (*a != *b)) |
- return false; |
- |
- return true; |
-} |
-#elif CPU(X86) |
-ALWAYS_INLINE bool equal(const LChar* a, const LChar* b, unsigned length) |
-{ |
- const uint32_t* aCharacters = reinterpret_cast<const uint32_t*>(a); |
- const uint32_t* bCharacters = reinterpret_cast<const uint32_t*>(b); |
- |
- unsigned wordLength = length >> 2; |
- for (unsigned i = 0; i != wordLength; ++i) { |
- if (*aCharacters++ != *bCharacters++) |
- return false; |
- } |
- |
- length &= 3; |
- |
- if (length) { |
- const LChar* aRemainder = reinterpret_cast<const LChar*>(aCharacters); |
- const LChar* bRemainder = reinterpret_cast<const LChar*>(bCharacters); |
- |
- for (unsigned i = 0; i < length; ++i) { |
- if (aRemainder[i] != bRemainder[i]) |
- return false; |
- } |
- } |
- |
- return true; |
-} |
- |
-ALWAYS_INLINE bool equal(const UChar* a, const UChar* b, unsigned length) |
-{ |
- const uint32_t* aCharacters = reinterpret_cast<const uint32_t*>(a); |
- const uint32_t* bCharacters = reinterpret_cast<const uint32_t*>(b); |
- |
- unsigned wordLength = length >> 1; |
- for (unsigned i = 0; i != wordLength; ++i) { |
- if (*aCharacters++ != *bCharacters++) |
- return false; |
- } |
- |
- if (length & 1 && *reinterpret_cast<const UChar*>(aCharacters) != *reinterpret_cast<const UChar*>(bCharacters)) |
- return false; |
- |
- return true; |
-} |
-#else |
-ALWAYS_INLINE bool equal(const LChar* a, const LChar* b, unsigned length) |
-{ |
- for (unsigned i = 0; i != length; ++i) { |
- if (a[i] != b[i]) |
- return false; |
- } |
- |
- return true; |
-} |
- |
-ALWAYS_INLINE bool equal(const UChar* a, const UChar* b, unsigned length) |
-{ |
- for (unsigned i = 0; i != length; ++i) { |
- if (a[i] != b[i]) |
- return false; |
- } |
- |
- return true; |
-} |
-#endif |
- |
-ALWAYS_INLINE bool equal(const LChar* a, const UChar* b, unsigned length) |
-{ |
- for (unsigned i = 0; i != length; ++i) { |
- if (a[i] != b[i]) |
- return false; |
- } |
- |
- return true; |
-} |
- |
-ALWAYS_INLINE bool equal(const UChar* a, const LChar* b, unsigned length) |
-{ |
- for (unsigned i = 0; i != length; ++i) { |
- if (a[i] != b[i]) |
- return false; |
- } |
- |
- return true; |
-} |
- |
-WTF_EXPORT_STRING_API bool equalIgnoringCase(const StringImpl*, const StringImpl*); |
-WTF_EXPORT_STRING_API bool equalIgnoringCase(const StringImpl*, const LChar*); |
-inline bool equalIgnoringCase(const LChar* a, const StringImpl* b) { return equalIgnoringCase(b, a); } |
-WTF_EXPORT_STRING_API bool equalIgnoringCase(const LChar*, const LChar*, unsigned); |
-WTF_EXPORT_STRING_API bool equalIgnoringCase(const UChar*, const LChar*, unsigned); |
-inline bool equalIgnoringCase(const UChar* a, const char* b, unsigned length) { return equalIgnoringCase(a, reinterpret_cast<const LChar*>(b), length); } |
-inline bool equalIgnoringCase(const LChar* a, const UChar* b, unsigned length) { return equalIgnoringCase(b, a, length); } |
-inline bool equalIgnoringCase(const char* a, const UChar* b, unsigned length) { return equalIgnoringCase(b, reinterpret_cast<const LChar*>(a), length); } |
-inline bool equalIgnoringCase(const char* a, const LChar* b, unsigned length) { return equalIgnoringCase(b, reinterpret_cast<const LChar*>(a), length); } |
-inline bool equalIgnoringCase(const UChar* a, const UChar* b, int length) |
-{ |
- ASSERT(length >= 0); |
- return !Unicode::umemcasecmp(a, b, length); |
-} |
-WTF_EXPORT_STRING_API bool equalIgnoringCaseNonNull(const StringImpl*, const StringImpl*); |
- |
-WTF_EXPORT_STRING_API bool equalIgnoringNullity(StringImpl*, StringImpl*); |
- |
-template<typename CharacterType> |
-inline size_t find(const CharacterType* characters, unsigned length, CharacterType matchCharacter, unsigned index = 0) |
-{ |
- while (index < length) { |
- if (characters[index] == matchCharacter) |
- return index; |
- ++index; |
- } |
- return notFound; |
-} |
- |
-ALWAYS_INLINE size_t find(const UChar* characters, unsigned length, LChar matchCharacter, unsigned index = 0) |
-{ |
- return find(characters, length, static_cast<UChar>(matchCharacter), index); |
-} |
- |
-inline size_t find(const LChar* characters, unsigned length, UChar matchCharacter, unsigned index = 0) |
-{ |
- if (matchCharacter & ~0xFF) |
- return notFound; |
- return find(characters, length, static_cast<LChar>(matchCharacter), index); |
-} |
- |
-inline size_t find(const LChar* characters, unsigned length, CharacterMatchFunctionPtr matchFunction, unsigned index = 0) |
-{ |
- while (index < length) { |
- if (matchFunction(characters[index])) |
- return index; |
- ++index; |
- } |
- return notFound; |
-} |
- |
-inline size_t find(const UChar* characters, unsigned length, CharacterMatchFunctionPtr matchFunction, unsigned index = 0) |
-{ |
- while (index < length) { |
- if (matchFunction(characters[index])) |
- return index; |
- ++index; |
- } |
- return notFound; |
-} |
- |
-template<typename CharacterType> |
-inline size_t findNextLineStart(const CharacterType* characters, unsigned length, unsigned index = 0) |
-{ |
- while (index < length) { |
- CharacterType c = characters[index++]; |
- if ((c != '\n') && (c != '\r')) |
- continue; |
- |
- // There can only be a start of a new line if there are more characters |
- // beyond the current character. |
- if (index < length) { |
- // The 3 common types of line terminators are 1. \r\n (Windows), |
- // 2. \r (old MacOS) and 3. \n (Unix'es). |
- |
- if (c == '\n') |
- return index; // Case 3: just \n. |
- |
- CharacterType c2 = characters[index]; |
- if (c2 != '\n') |
- return index; // Case 2: just \r. |
- |
- // Case 1: \r\n. |
- // But, there's only a start of a new line if there are more |
- // characters beyond the \r\n. |
- if (++index < length) |
- return index; |
- } |
- } |
- return notFound; |
-} |
- |
-template<typename CharacterType> |
-inline size_t reverseFindLineTerminator(const CharacterType* characters, unsigned length, unsigned index = UINT_MAX) |
-{ |
- if (!length) |
- return notFound; |
- if (index >= length) |
- index = length - 1; |
- CharacterType c = characters[index]; |
- while ((c != '\n') && (c != '\r')) { |
- if (!index--) |
- return notFound; |
- c = characters[index]; |
- } |
- return index; |
-} |
- |
-template<typename CharacterType> |
-inline size_t reverseFind(const CharacterType* characters, unsigned length, CharacterType matchCharacter, unsigned index = UINT_MAX) |
-{ |
- if (!length) |
- return notFound; |
- if (index >= length) |
- index = length - 1; |
- while (characters[index] != matchCharacter) { |
- if (!index--) |
- return notFound; |
- } |
- return index; |
-} |
- |
-ALWAYS_INLINE size_t reverseFind(const UChar* characters, unsigned length, LChar matchCharacter, unsigned index = UINT_MAX) |
-{ |
- return reverseFind(characters, length, static_cast<UChar>(matchCharacter), index); |
-} |
- |
-inline size_t reverseFind(const LChar* characters, unsigned length, UChar matchCharacter, unsigned index = UINT_MAX) |
-{ |
- if (matchCharacter & ~0xFF) |
- return notFound; |
- return reverseFind(characters, length, static_cast<LChar>(matchCharacter), index); |
-} |
- |
-inline size_t StringImpl::find(LChar character, unsigned start) |
-{ |
- if (is8Bit()) |
- return WTF::find(characters8(), m_length, character, start); |
- return WTF::find(characters16(), m_length, character, start); |
-} |
- |
-ALWAYS_INLINE size_t StringImpl::find(char character, unsigned start) |
-{ |
- return find(static_cast<LChar>(character), start); |
-} |
- |
-inline size_t StringImpl::find(UChar character, unsigned start) |
-{ |
- if (is8Bit()) |
- return WTF::find(characters8(), m_length, character, start); |
- return WTF::find(characters16(), m_length, character, start); |
-} |
- |
-template<size_t inlineCapacity> |
-bool equalIgnoringNullity(const Vector<UChar, inlineCapacity>& a, StringImpl* b) |
-{ |
- if (!b) |
- return !a.size(); |
- if (a.size() != b->length()) |
- return false; |
- return !memcmp(a.data(), b->characters(), b->length() * sizeof(UChar)); |
-} |
- |
-template<typename CharacterType1, typename CharacterType2> |
-static inline int codePointCompare(unsigned l1, unsigned l2, const CharacterType1* c1, const CharacterType2* c2) |
-{ |
- const unsigned lmin = l1 < l2 ? l1 : l2; |
- unsigned pos = 0; |
- while (pos < lmin && *c1 == *c2) { |
- ++c1; |
- ++c2; |
- ++pos; |
- } |
- |
- if (pos < lmin) |
- return (c1[0] > c2[0]) ? 1 : -1; |
- |
- if (l1 == l2) |
- return 0; |
- |
- return (l1 > l2) ? 1 : -1; |
-} |
- |
-static inline int codePointCompare8(const StringImpl* string1, const StringImpl* string2) |
-{ |
- return codePointCompare(string1->length(), string2->length(), string1->characters8(), string2->characters8()); |
-} |
- |
-static inline int codePointCompare16(const StringImpl* string1, const StringImpl* string2) |
-{ |
- return codePointCompare(string1->length(), string2->length(), string1->characters16(), string2->characters16()); |
-} |
- |
-static inline int codePointCompare8To16(const StringImpl* string1, const StringImpl* string2) |
-{ |
- return codePointCompare(string1->length(), string2->length(), string1->characters8(), string2->characters16()); |
-} |
- |
-static inline int codePointCompare(const StringImpl* string1, const StringImpl* string2) |
-{ |
- if (!string1) |
- return (string2 && string2->length()) ? -1 : 0; |
- |
- if (!string2) |
- return string1->length() ? 1 : 0; |
- |
- bool string1Is8Bit = string1->is8Bit(); |
- bool string2Is8Bit = string2->is8Bit(); |
- if (string1Is8Bit) { |
- if (string2Is8Bit) |
- return codePointCompare8(string1, string2); |
- return codePointCompare8To16(string1, string2); |
- } |
- if (string2Is8Bit) |
- return -codePointCompare8To16(string2, string1); |
- return codePointCompare16(string1, string2); |
-} |
- |
-static inline bool isSpaceOrNewline(UChar c) |
-{ |
- // Use isASCIISpace() for basic Latin-1. |
- // This will include newlines, which aren't included in Unicode DirWS. |
- return c <= 0x7F ? WTF::isASCIISpace(c) : WTF::Unicode::direction(c) == WTF::Unicode::WhiteSpaceNeutral; |
-} |
- |
-inline PassRefPtr<StringImpl> StringImpl::isolatedCopy() const |
-{ |
- if (isASCIILiteral()) |
- return StringImpl::createFromLiteral(reinterpret_cast<const char*>(m_data8), m_length); |
- if (is8Bit()) |
- return create(m_data8, m_length); |
- return create(m_data16, m_length); |
-} |
- |
-struct StringHash; |
- |
-// StringHash is the default hash for StringImpl* and RefPtr<StringImpl> |
-template<typename T> struct DefaultHash; |
-template<> struct DefaultHash<StringImpl*> { |
- typedef StringHash Hash; |
-}; |
-template<> struct DefaultHash<RefPtr<StringImpl> > { |
- typedef StringHash Hash; |
-}; |
- |
-} |
- |
-using WTF::StringImpl; |
-using WTF::equal; |
-using WTF::equalNonNull; |
-using WTF::TextCaseSensitivity; |
-using WTF::TextCaseSensitive; |
-using WTF::TextCaseInsensitive; |
- |
-#endif |