blob: 25527a676df23f229cbe11138c5a46e168920605 [file] [log] [blame]
/*
* Copyright (C) 2015-2019 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <algorithm>
#include <unicode/uchar.h>
#include <wtf/ASCIICType.h>
#include <wtf/NotFound.h>
#include <wtf/UnalignedAccess.h>
namespace WTF {
template<typename CharacterType> inline bool isLatin1(CharacterType character)
{
using UnsignedCharacterType = typename std::make_unsigned<CharacterType>::type;
return static_cast<UnsignedCharacterType>(character) <= static_cast<UnsignedCharacterType>(0xFF);
}
using CodeUnitMatchFunction = bool (*)(UChar);
template<typename CharacterTypeA, typename CharacterTypeB> bool equalIgnoringASCIICase(const CharacterTypeA*, const CharacterTypeB*, unsigned length);
template<typename CharacterTypeA, typename CharacterTypeB> bool equalIgnoringASCIICase(const CharacterTypeA*, unsigned lengthA, const CharacterTypeB*, unsigned lengthB);
template<typename StringClassA, typename StringClassB> bool equalIgnoringASCIICaseCommon(const StringClassA&, const StringClassB&);
template<typename CharacterType> bool equalLettersIgnoringASCIICase(const CharacterType*, const char* lowercaseLetters, unsigned length);
template<typename CharacterType, unsigned lowercaseLettersLength> bool equalLettersIgnoringASCIICase(const CharacterType*, unsigned charactersLength, const char (&lowercaseLetters)[lowercaseLettersLength]);
template<typename StringClass, unsigned length> bool equalLettersIgnoringASCIICaseCommon(const StringClass&, const char (&lowercaseLetters)[length]);
bool equalIgnoringASCIICase(const char*, const char*);
template<unsigned lowercaseLettersLength> bool equalLettersIgnoringASCIICase(const char*, const char (&lowercaseLetters)[lowercaseLettersLength]);
// Do comparisons 8 or 4 bytes-at-a-time on architectures where it's safe.
#if (CPU(X86_64) || CPU(ARM64)) && !ASAN_ENABLED
ALWAYS_INLINE bool equal(const LChar* aLChar, const LChar* bLChar, unsigned length)
{
unsigned dwordLength = length >> 3;
const char* a = reinterpret_cast<const char*>(aLChar);
const char* b = reinterpret_cast<const char*>(bLChar);
if (dwordLength) {
for (unsigned i = 0; i != dwordLength; ++i) {
if (unalignedLoad<uint64_t>(a) != unalignedLoad<uint64_t>(b))
return false;
a += sizeof(uint64_t);
b += sizeof(uint64_t);
}
}
if (length & 4) {
if (unalignedLoad<uint32_t>(a) != unalignedLoad<uint32_t>(b))
return false;
a += sizeof(uint32_t);
b += sizeof(uint32_t);
}
if (length & 2) {
if (unalignedLoad<uint16_t>(a) != unalignedLoad<uint16_t>(b))
return false;
a += sizeof(uint16_t);
b += sizeof(uint16_t);
}
if (length & 1 && (*reinterpret_cast<const LChar*>(a) != *reinterpret_cast<const LChar*>(b)))
return false;
return true;
}
ALWAYS_INLINE bool equal(const UChar* aUChar, const UChar* bUChar, unsigned length)
{
unsigned dwordLength = length >> 2;
const char* a = reinterpret_cast<const char*>(aUChar);
const char* b = reinterpret_cast<const char*>(bUChar);
if (dwordLength) {
for (unsigned i = 0; i != dwordLength; ++i) {
if (unalignedLoad<uint64_t>(a) != unalignedLoad<uint64_t>(b))
return false;
a += sizeof(uint64_t);
b += sizeof(uint64_t);
}
}
if (length & 2) {
if (unalignedLoad<uint32_t>(a) != unalignedLoad<uint32_t>(b))
return false;
a += sizeof(uint32_t);
b += sizeof(uint32_t);
}
if (length & 1 && (*reinterpret_cast<const UChar*>(a) != *reinterpret_cast<const UChar*>(b)))
return false;
return true;
}
#elif CPU(X86) && !ASAN_ENABLED
ALWAYS_INLINE bool equal(const LChar* aLChar, const LChar* bLChar, unsigned length)
{
const char* a = reinterpret_cast<const char*>(aLChar);
const char* b = reinterpret_cast<const char*>(bLChar);
unsigned wordLength = length >> 2;
for (unsigned i = 0; i != wordLength; ++i) {
if (unalignedLoad<uint32_t>(a) != unalignedLoad<uint32_t>(b))
return false;
a += sizeof(uint32_t);
b += sizeof(uint32_t);
}
length &= 3;
if (length) {
const LChar* aRemainder = reinterpret_cast<const LChar*>(a);
const LChar* bRemainder = reinterpret_cast<const LChar*>(b);
for (unsigned i = 0; i < length; ++i) {
if (aRemainder[i] != bRemainder[i])
return false;
}
}
return true;
}
ALWAYS_INLINE bool equal(const UChar* aUChar, const UChar* bUChar, unsigned length)
{
const char* a = reinterpret_cast<const char*>(aUChar);
const char* b = reinterpret_cast<const char*>(bUChar);
unsigned wordLength = length >> 1;
for (unsigned i = 0; i != wordLength; ++i) {
if (unalignedLoad<uint32_t>(a) != unalignedLoad<uint32_t>(b))
return false;
a += sizeof(uint32_t);
b += sizeof(uint32_t);
}
if (length & 1 && *reinterpret_cast<const UChar*>(a) != *reinterpret_cast<const UChar*>(b))
return false;
return true;
}
#elif PLATFORM(IOS_FAMILY) && WTF_ARM_ARCH_AT_LEAST(7) && !ASAN_ENABLED
ALWAYS_INLINE bool equal(const LChar* a, const LChar* b, unsigned length)
{
bool isEqual = false;
uint32_t aValue;
uint32_t bValue;
asm("subs %[length], #4\n"
"blo 2f\n"
"0:\n" // Label 0 = Start of loop over 32 bits.
"ldr %[aValue], [%[a]], #4\n"
"ldr %[bValue], [%[b]], #4\n"
"cmp %[aValue], %[bValue]\n"
"bne 66f\n"
"subs %[length], #4\n"
"bhs 0b\n"
// At this point, length can be:
// -0: 00000000000000000000000000000000 (0 bytes left)
// -1: 11111111111111111111111111111111 (3 bytes left)
// -2: 11111111111111111111111111111110 (2 bytes left)
// -3: 11111111111111111111111111111101 (1 byte left)
// -4: 11111111111111111111111111111100 (length was 0)
// The pointers are at the correct position.
"2:\n" // Label 2 = End of loop over 32 bits, check for pair of characters.
"tst %[length], #2\n"
"beq 1f\n"
"ldrh %[aValue], [%[a]], #2\n"
"ldrh %[bValue], [%[b]], #2\n"
"cmp %[aValue], %[bValue]\n"
"bne 66f\n"
"1:\n" // Label 1 = Check for a single character left.
"tst %[length], #1\n"
"beq 42f\n"
"ldrb %[aValue], [%[a]]\n"
"ldrb %[bValue], [%[b]]\n"
"cmp %[aValue], %[bValue]\n"
"bne 66f\n"
"42:\n" // Label 42 = Success.
"mov %[isEqual], #1\n"
"66:\n" // Label 66 = End without changing isEqual to 1.
: [length]"+r"(length), [isEqual]"+r"(isEqual), [a]"+r"(a), [b]"+r"(b), [aValue]"+r"(aValue), [bValue]"+r"(bValue)
:
:
);
return isEqual;
}
ALWAYS_INLINE bool equal(const UChar* a, const UChar* b, unsigned length)
{
bool isEqual = false;
uint32_t aValue;
uint32_t bValue;
asm("subs %[length], #2\n"
"blo 1f\n"
"0:\n" // Label 0 = Start of loop over 32 bits.
"ldr %[aValue], [%[a]], #4\n"
"ldr %[bValue], [%[b]], #4\n"
"cmp %[aValue], %[bValue]\n"
"bne 66f\n"
"subs %[length], #2\n"
"bhs 0b\n"
// At this point, length can be:
// -0: 00000000000000000000000000000000 (0 bytes left)
// -1: 11111111111111111111111111111111 (1 character left, 2 bytes)
// -2: 11111111111111111111111111111110 (length was zero)
// The pointers are at the correct position.
"1:\n" // Label 1 = Check for a single character left.
"tst %[length], #1\n"
"beq 42f\n"
"ldrh %[aValue], [%[a]]\n"
"ldrh %[bValue], [%[b]]\n"
"cmp %[aValue], %[bValue]\n"
"bne 66f\n"
"42:\n" // Label 42 = Success.
"mov %[isEqual], #1\n"
"66:\n" // Label 66 = End without changing isEqual to 1.
: [length]"+r"(length), [isEqual]"+r"(isEqual), [a]"+r"(a), [b]"+r"(b), [aValue]"+r"(aValue), [bValue]"+r"(bValue)
:
:
);
return isEqual;
}
#elif !ASAN_ENABLED
ALWAYS_INLINE bool equal(const LChar* a, const LChar* b, unsigned length) { return !memcmp(a, b, length); }
ALWAYS_INLINE bool equal(const UChar* a, const UChar* b, unsigned length) { return !memcmp(a, b, length * sizeof(UChar)); }
#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) { return equal(b, a, length); }
template<typename StringClassA, typename StringClassB>
ALWAYS_INLINE bool equalCommon(const StringClassA& a, const StringClassB& b)
{
unsigned length = a.length();
if (length != b.length())
return false;
if (a.is8Bit()) {
if (b.is8Bit())
return equal(a.characters8(), b.characters8(), length);
return equal(a.characters8(), b.characters16(), length);
}
if (b.is8Bit())
return equal(a.characters16(), b.characters8(), length);
return equal(a.characters16(), b.characters16(), length);
}
template<typename StringClassA, typename StringClassB>
ALWAYS_INLINE bool equalCommon(const StringClassA* a, const StringClassB* b)
{
if (a == b)
return true;
if (!a || !b)
return false;
return equal(*a, *b);
}
template<typename StringClass, unsigned length> bool equal(const StringClass& a, const UChar (&codeUnits)[length])
{
if (a.length() != length)
return false;
if (a.is8Bit())
return equal(a.characters8(), codeUnits, length);
return equal(a.characters16(), codeUnits, length);
}
template<typename CharacterTypeA, typename CharacterTypeB>
inline bool equalIgnoringASCIICase(const CharacterTypeA* a, const CharacterTypeB* b, unsigned length)
{
for (unsigned i = 0; i < length; ++i) {
if (toASCIILower(a[i]) != toASCIILower(b[i]))
return false;
}
return true;
}
template<typename CharacterTypeA, typename CharacterTypeB> inline bool equalIgnoringASCIICase(const CharacterTypeA* a, unsigned lengthA, const CharacterTypeB* b, unsigned lengthB)
{
return lengthA == lengthB && equalIgnoringASCIICase(a, b, lengthA);
}
template<typename StringClassA, typename StringClassB>
bool equalIgnoringASCIICaseCommon(const StringClassA& a, const StringClassB& b)
{
unsigned length = a.length();
if (length != b.length())
return false;
if (a.is8Bit()) {
if (b.is8Bit())
return equalIgnoringASCIICase(a.characters8(), b.characters8(), length);
return equalIgnoringASCIICase(a.characters8(), b.characters16(), length);
}
if (b.is8Bit())
return equalIgnoringASCIICase(a.characters16(), b.characters8(), length);
return equalIgnoringASCIICase(a.characters16(), b.characters16(), length);
}
template<typename StringClassA> bool equalIgnoringASCIICaseCommon(const StringClassA& a, const char* b)
{
unsigned length = a.length();
if (length != strlen(b))
return false;
if (a.is8Bit())
return equalIgnoringASCIICase(a.characters8(), b, length);
return equalIgnoringASCIICase(a.characters16(), b, length);
}
template<typename StringClassA, typename StringClassB>
bool startsWith(const StringClassA& reference, const StringClassB& prefix)
{
unsigned prefixLength = prefix.length();
if (prefixLength > reference.length())
return false;
if (reference.is8Bit()) {
if (prefix.is8Bit())
return equal(reference.characters8(), prefix.characters8(), prefixLength);
return equal(reference.characters8(), prefix.characters16(), prefixLength);
}
if (prefix.is8Bit())
return equal(reference.characters16(), prefix.characters8(), prefixLength);
return equal(reference.characters16(), prefix.characters16(), prefixLength);
}
template<typename StringClassA, typename StringClassB>
bool startsWithIgnoringASCIICase(const StringClassA& reference, const StringClassB& prefix)
{
unsigned prefixLength = prefix.length();
if (prefixLength > reference.length())
return false;
if (reference.is8Bit()) {
if (prefix.is8Bit())
return equalIgnoringASCIICase(reference.characters8(), prefix.characters8(), prefixLength);
return equalIgnoringASCIICase(reference.characters8(), prefix.characters16(), prefixLength);
}
if (prefix.is8Bit())
return equalIgnoringASCIICase(reference.characters16(), prefix.characters8(), prefixLength);
return equalIgnoringASCIICase(reference.characters16(), prefix.characters16(), prefixLength);
}
template<typename StringClassA, typename StringClassB>
bool endsWith(const StringClassA& reference, const StringClassB& suffix)
{
unsigned suffixLength = suffix.length();
unsigned referenceLength = reference.length();
if (suffixLength > referenceLength)
return false;
unsigned startOffset = referenceLength - suffixLength;
if (reference.is8Bit()) {
if (suffix.is8Bit())
return equal(reference.characters8() + startOffset, suffix.characters8(), suffixLength);
return equal(reference.characters8() + startOffset, suffix.characters16(), suffixLength);
}
if (suffix.is8Bit())
return equal(reference.characters16() + startOffset, suffix.characters8(), suffixLength);
return equal(reference.characters16() + startOffset, suffix.characters16(), suffixLength);
}
template<typename StringClassA, typename StringClassB>
bool endsWithIgnoringASCIICase(const StringClassA& reference, const StringClassB& suffix)
{
unsigned suffixLength = suffix.length();
unsigned referenceLength = reference.length();
if (suffixLength > referenceLength)
return false;
unsigned startOffset = referenceLength - suffixLength;
if (reference.is8Bit()) {
if (suffix.is8Bit())
return equalIgnoringASCIICase(reference.characters8() + startOffset, suffix.characters8(), suffixLength);
return equalIgnoringASCIICase(reference.characters8() + startOffset, suffix.characters16(), suffixLength);
}
if (suffix.is8Bit())
return equalIgnoringASCIICase(reference.characters16() + startOffset, suffix.characters8(), suffixLength);
return equalIgnoringASCIICase(reference.characters16() + startOffset, suffix.characters16(), suffixLength);
}
template <typename SearchCharacterType, typename MatchCharacterType>
size_t findIgnoringASCIICase(const SearchCharacterType* source, const MatchCharacterType* matchCharacters, unsigned startOffset, unsigned searchLength, unsigned matchLength)
{
ASSERT(searchLength >= matchLength);
const SearchCharacterType* startSearchedCharacters = source + startOffset;
// delta is the number of additional times to test; delta == 0 means test only once.
unsigned delta = searchLength - matchLength;
for (unsigned i = 0; i <= delta; ++i) {
if (equalIgnoringASCIICase(startSearchedCharacters + i, matchCharacters, matchLength))
return startOffset + i;
}
return notFound;
}
inline size_t findIgnoringASCIICaseWithoutLength(const char* source, const char* matchCharacters)
{
unsigned searchLength = strlen(source);
unsigned matchLength = strlen(matchCharacters);
return matchLength < searchLength ? findIgnoringASCIICase(source, matchCharacters, 0, searchLength, matchLength) : notFound;
}
template<typename StringClassA, typename StringClassB>
size_t findIgnoringASCIICase(const StringClassA& source, const StringClassB& stringToFind, unsigned startOffset)
{
unsigned sourceStringLength = source.length();
unsigned matchLength = stringToFind.length();
if (!matchLength)
return std::min(startOffset, sourceStringLength);
// Check startOffset & matchLength are in range.
if (startOffset > sourceStringLength)
return notFound;
unsigned searchLength = sourceStringLength - startOffset;
if (matchLength > searchLength)
return notFound;
if (source.is8Bit()) {
if (stringToFind.is8Bit())
return findIgnoringASCIICase(source.characters8(), stringToFind.characters8(), startOffset, searchLength, matchLength);
return findIgnoringASCIICase(source.characters8(), stringToFind.characters16(), startOffset, searchLength, matchLength);
}
if (stringToFind.is8Bit())
return findIgnoringASCIICase(source.characters16(), stringToFind.characters8(), startOffset, searchLength, matchLength);
return findIgnoringASCIICase(source.characters16(), stringToFind.characters16(), startOffset, searchLength, matchLength);
}
template <typename SearchCharacterType, typename MatchCharacterType>
ALWAYS_INLINE static size_t findInner(const SearchCharacterType* searchCharacters, const MatchCharacterType* matchCharacters, unsigned index, unsigned searchLength, unsigned matchLength)
{
// Optimization: keep a running hash of the strings,
// only call equal() if the hashes match.
// delta is the number of additional times to test; delta == 0 means test only once.
unsigned delta = searchLength - matchLength;
unsigned searchHash = 0;
unsigned matchHash = 0;
for (unsigned i = 0; i < matchLength; ++i) {
searchHash += searchCharacters[i];
matchHash += matchCharacters[i];
}
unsigned i = 0;
// keep looping until we match
while (searchHash != matchHash || !equal(searchCharacters + i, matchCharacters, matchLength)) {
if (i == delta)
return notFound;
searchHash += searchCharacters[i + matchLength];
searchHash -= searchCharacters[i];
++i;
}
return index + i;
}
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 (!isLatin1(matchCharacter))
return notFound;
return find(characters, length, static_cast<LChar>(matchCharacter), index);
}
template<typename StringClass>
size_t findCommon(const StringClass& haystack, const StringClass& needle, unsigned start)
{
unsigned needleLength = needle.length();
if (needleLength == 1) {
if (haystack.is8Bit())
return WTF::find(haystack.characters8(), haystack.length(), needle[0], start);
return WTF::find(haystack.characters16(), haystack.length(), needle[0], start);
}
if (start > haystack.length())
return notFound;
if (!needleLength)
return start;
unsigned searchLength = haystack.length() - start;
if (needleLength > searchLength)
return notFound;
if (haystack.is8Bit()) {
if (needle.is8Bit())
return findInner(haystack.characters8() + start, needle.characters8(), start, searchLength, needleLength);
return findInner(haystack.characters8() + start, needle.characters16(), start, searchLength, needleLength);
}
if (needle.is8Bit())
return findInner(haystack.characters16() + start, needle.characters8(), start, searchLength, needleLength);
return findInner(haystack.characters16() + start, needle.characters16(), start, searchLength, needleLength);
}
// This is marked inline since it's mostly used in non-inline functions for each string type.
// When used directly in code it's probably OK to be inline; maybe the loop will be unrolled.
template<typename CharacterType> inline bool equalLettersIgnoringASCIICase(const CharacterType* characters, const char* lowercaseLetters, unsigned length)
{
for (unsigned i = 0; i < length; ++i) {
if (!isASCIIAlphaCaselessEqual(characters[i], lowercaseLetters[i]))
return false;
}
return true;
}
template<typename CharacterType, unsigned lowercaseLettersLength> inline bool equalLettersIgnoringASCIICase(const CharacterType* characters, unsigned charactersLength, const char (&lowercaseLetters)[lowercaseLettersLength])
{
ASSERT(strlen(lowercaseLetters) == lowercaseLettersLength - 1);
unsigned lowercaseLettersStringLength = lowercaseLettersLength - 1;
return charactersLength == lowercaseLettersStringLength && equalLettersIgnoringASCIICase(characters, lowercaseLetters, lowercaseLettersStringLength);
}
template<typename StringClass> bool inline hasPrefixWithLettersIgnoringASCIICaseCommon(const StringClass& string, const char* lowercaseLetters, unsigned length)
{
#if !ASSERT_DISABLED
ASSERT(*lowercaseLetters);
for (const char* letter = lowercaseLetters; *letter; ++letter)
ASSERT(toASCIILowerUnchecked(*letter) == *letter);
#endif
ASSERT(string.length() >= length);
if (string.is8Bit())
return equalLettersIgnoringASCIICase(string.characters8(), lowercaseLetters, length);
return equalLettersIgnoringASCIICase(string.characters16(), lowercaseLetters, length);
}
// This is intentionally not marked inline because it's used often and is not speed-critical enough to want it inlined everywhere.
template<typename StringClass> bool equalLettersIgnoringASCIICaseCommonWithoutLength(const StringClass& string, const char* lowercaseLetters)
{
unsigned length = string.length();
if (length != strlen(lowercaseLetters))
return false;
return hasPrefixWithLettersIgnoringASCIICaseCommon(string, lowercaseLetters, length);
}
template<typename StringClass> bool startsWithLettersIgnoringASCIICaseCommonWithoutLength(const StringClass& string, const char* lowercaseLetters)
{
size_t prefixLength = strlen(lowercaseLetters);
if (!prefixLength)
return true;
if (string.length() < prefixLength)
return false;
return hasPrefixWithLettersIgnoringASCIICaseCommon(string, lowercaseLetters, prefixLength);
}
template<typename StringClass, unsigned length> inline bool equalLettersIgnoringASCIICaseCommon(const StringClass& string, const char (&lowercaseLetters)[length])
{
// Don't actually use the length; we are choosing code size over speed.
ASSERT(strlen(lowercaseLetters) == length - 1);
const char* pointer = lowercaseLetters;
return equalLettersIgnoringASCIICaseCommonWithoutLength(string, pointer);
}
template<typename StringClass, unsigned length> inline bool startsWithLettersIgnoringASCIICaseCommon(const StringClass& string, const char (&lowercaseLetters)[length])
{
const char* pointer = lowercaseLetters;
return startsWithLettersIgnoringASCIICaseCommonWithoutLength(string, pointer);
}
inline bool equalIgnoringASCIICase(const char* a, const char* b)
{
auto length = strlen(a);
return length == strlen(b) && equalIgnoringASCIICase(a, b, length);
}
template<unsigned lowercaseLettersLength> inline bool equalLettersIgnoringASCIICase(const char* string, const char (&lowercaseLetters)[lowercaseLettersLength])
{
auto length = strlen(lowercaseLetters);
return strlen(string) == length && equalLettersIgnoringASCIICase(string, lowercaseLetters, length);
}
}
using WTF::equalIgnoringASCIICase;
using WTF::equalLettersIgnoringASCIICase;
using WTF::isLatin1;