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| 1 // Copyright 2016 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "wtf/text/StringView.h" | |
| 6 | |
| 7 #include "wtf/text/AtomicString.h" | |
| 8 #include "wtf/text/StringImpl.h" | |
| 9 #include "wtf/text/WTFString.h" | |
| 10 | |
| 11 namespace WTF { | |
| 12 | |
| 13 StringView::StringView(const UChar* chars) | |
| 14 : StringView(chars, chars ? lengthOfNullTerminatedString(chars) : 0) {} | |
| 15 | |
| 16 #if DCHECK_IS_ON() | |
| 17 StringView::~StringView() { | |
| 18 DCHECK(m_impl); | |
| 19 DCHECK(!m_impl->hasOneRef() || m_impl->isStatic()) | |
| 20 << "StringView does not own the StringImpl, it " | |
| 21 "must not have the last ref."; | |
| 22 } | |
| 23 #endif | |
| 24 | |
| 25 String StringView::toString() const { | |
| 26 if (isNull()) | |
| 27 return String(); | |
| 28 if (isEmpty()) | |
| 29 return emptyString; | |
| 30 if (StringImpl* impl = sharedImpl()) | |
| 31 return impl; | |
| 32 if (is8Bit()) | |
| 33 return String(characters8(), m_length); | |
| 34 return StringImpl::create8BitIfPossible(characters16(), m_length); | |
| 35 } | |
| 36 | |
| 37 AtomicString StringView::toAtomicString() const { | |
| 38 if (isNull()) | |
| 39 return nullAtom; | |
| 40 if (isEmpty()) | |
| 41 return emptyAtom; | |
| 42 if (StringImpl* impl = sharedImpl()) | |
| 43 return AtomicString(impl); | |
| 44 if (is8Bit()) | |
| 45 return AtomicString(characters8(), m_length); | |
| 46 return AtomicString(characters16(), m_length); | |
| 47 } | |
| 48 | |
| 49 bool equalStringView(const StringView& a, const StringView& b) { | |
| 50 if (a.isNull() || b.isNull()) | |
| 51 return a.isNull() == b.isNull(); | |
| 52 if (a.length() != b.length()) | |
| 53 return false; | |
| 54 if (a.is8Bit()) { | |
| 55 if (b.is8Bit()) | |
| 56 return equal(a.characters8(), b.characters8(), a.length()); | |
| 57 return equal(a.characters8(), b.characters16(), a.length()); | |
| 58 } | |
| 59 if (b.is8Bit()) | |
| 60 return equal(a.characters16(), b.characters8(), a.length()); | |
| 61 return equal(a.characters16(), b.characters16(), a.length()); | |
| 62 } | |
| 63 | |
| 64 bool equalIgnoringCaseAndNullity(const StringView& a, const StringView& b) { | |
| 65 if (a.length() != b.length()) | |
| 66 return false; | |
| 67 if (a.is8Bit()) { | |
| 68 if (b.is8Bit()) | |
| 69 return equalIgnoringCase(a.characters8(), b.characters8(), a.length()); | |
| 70 return equalIgnoringCase(a.characters8(), b.characters16(), a.length()); | |
| 71 } | |
| 72 if (b.is8Bit()) | |
| 73 return equalIgnoringCase(a.characters16(), b.characters8(), a.length()); | |
| 74 return equalIgnoringCase(a.characters16(), b.characters16(), a.length()); | |
| 75 } | |
| 76 | |
| 77 bool equalIgnoringCase(const StringView& a, const StringView& b) { | |
| 78 if (a.isNull() || b.isNull()) | |
| 79 return a.isNull() == b.isNull(); | |
| 80 return equalIgnoringCaseAndNullity(a, b); | |
| 81 } | |
| 82 | |
| 83 bool equalIgnoringASCIICase(const StringView& a, const StringView& b) { | |
| 84 if (a.isNull() || b.isNull()) | |
| 85 return a.isNull() == b.isNull(); | |
| 86 if (a.length() != b.length()) | |
| 87 return false; | |
| 88 if (a.is8Bit()) { | |
| 89 if (b.is8Bit()) | |
| 90 return equalIgnoringASCIICase(a.characters8(), b.characters8(), | |
| 91 a.length()); | |
| 92 return equalIgnoringASCIICase(a.characters8(), b.characters16(), | |
| 93 a.length()); | |
| 94 } | |
| 95 if (b.is8Bit()) | |
| 96 return equalIgnoringASCIICase(a.characters16(), b.characters8(), | |
| 97 a.length()); | |
| 98 return equalIgnoringASCIICase(a.characters16(), b.characters16(), a.length()); | |
| 99 } | |
| 100 | |
| 101 } // namespace WTF | |
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Chromium Code Reviews
Issue 2764243002:
Move files in wtf/ to platform/wtf/ (Part 9). (Closed)
