Refactor StringImpl::{start,end}sWith(StringImpl*, ...)

third_party/WebKit/Source/wtf/text/WTFString.h

 /*
  * (C) 1999 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012, 2013 Apple 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,
@@ skipping 67 matching lines @@
     KeepTrailingZeros,
     TruncateTrailingZeros
 };
 
 enum UTF8ConversionMode {
     LenientUTF8Conversion,
     StrictUTF8Conversion,
     StrictUTF8ConversionReplacingUnpairedSurrogatesWithFFFD
 };
 
+#define DISPATCH_CASE_OP(caseSensitivity, op, args)                     \
+    ((caseSensitivity == TextCaseSensitive) ? op args :                 \
+     op##IgnoringCase args)
+
 template<bool isSpecialCharacter(UChar), typename CharacterType>
 bool isAllSpecialCharacters(const CharacterType*, size_t);
 
 // You can find documentation about this class in this doc:
 // https://docs.google.com/document/d/1kOCUlJdh2WJMJGDf-WoEQhmnjKLaOYRbiHz5TiGJl14/edit?usp=sharing
 class WTF_EXPORT String {
 public:
     // Construct a null string, distinguishable from an empty string.
     String() { }
 
@@ skipping 131 matching lines @@
     // Case insensitive string matching.
     size_t findIgnoringCase(const LChar* str, unsigned start = 0) const
         { return m_impl ? m_impl->findIgnoringCase(str, start) : kNotFound; }
     size_t findIgnoringCase(const String& str, unsigned start = 0) const
         { return m_impl ? m_impl->findIgnoringCase(str.impl(), start) : kNotFound; }
     size_t reverseFindIgnoringCase(const String& str, unsigned start = UINT_MAX) const
         { return m_impl ? m_impl->reverseFindIgnoringCase(str.impl(), start) : kNotFound; }
 
     // Wrappers for find & reverseFind adding dynamic sensitivity check.
     size_t find(const LChar* str, unsigned start, TextCaseSensitivity caseSensitivity) const
-        { return (caseSensitivity == TextCaseSensitive) ? find(str, start) : findIgnoringCase(str, start); }
+        { return DISPATCH_CASE_OP(caseSensitivity, find, (str, start)); }
     size_t find(const String& str, unsigned start, TextCaseSensitivity caseSensitivity) const
-        { return (caseSensitivity == TextCaseSensitive) ? find(str, start) : findIgnoringCase(str, start); }
+        { return DISPATCH_CASE_OP(caseSensitivity, find, (str, start)); }
     size_t reverseFind(const String& str, unsigned start, TextCaseSensitivity caseSensitivity) const
         { return (caseSensitivity == TextCaseSensitive) ? reverseFind(str, start) : reverseFindIgnoringCase(str, start); }
 
     Vector<UChar> charactersWithNullTermination() const;
     unsigned copyTo(UChar* buffer, unsigned pos, unsigned maxLength) const;
 
     template<size_t inlineCapacity>
     void appendTo(Vector<UChar, inlineCapacity>&, unsigned pos = 0, unsigned len = UINT_MAX) const;
 
     template<typename BufferType>
     void appendTo(BufferType&, unsigned pos = 0, unsigned len = UINT_MAX) const;
 
     template<size_t inlineCapacity>
     void prependTo(Vector<UChar, inlineCapacity>&, unsigned pos = 0, unsigned len = UINT_MAX) const;
 
     UChar32 characterStartingAt(unsigned) const;
     template<typename CharacterType>
     bool contains(CharacterType c) const { return find(c) != kNotFound; }
     bool contains(const LChar* str, TextCaseSensitivity caseSensitivity = TextCaseSensitive) const { return find(str, 0, caseSensitivity) != kNotFound; }
     bool contains(const String& str, TextCaseSensitivity caseSensitivity = TextCaseSensitive) const { return find(str, 0, caseSensitivity) != kNotFound; }
 
     bool startsWith(const String& s, TextCaseSensitivity caseSensitivity = TextCaseSensitive) const
-        { return m_impl ? m_impl->startsWith(s.impl(), caseSensitivity) : s.isEmpty(); }
+        { return m_impl ? DISPATCH_CASE_OP(caseSensitivity, m_impl->startsWith, (s.impl())) : s.isEmpty(); }
     bool startsWith(UChar character) const
         { return m_impl ? m_impl->startsWith(character) : false; }
     template<unsigned matchLength>
     bool startsWith(const char (&prefix)[matchLength]) const
         { return m_impl ? m_impl->startsWith(prefix, matchLength - 1) : !matchLength; }
 
     bool endsWith(const String& s, TextCaseSensitivity caseSensitivity = TextCaseSensitive) const
-        { return m_impl ? m_impl->endsWith(s.impl(), caseSensitivity) : s.isEmpty(); }
+        { return m_impl ? DISPATCH_CASE_OP(caseSensitivity, m_impl->endsWith, (s.impl())) : s.isEmpty(); }
     bool endsWith(UChar character) const
         { return m_impl ? m_impl->endsWith(character) : false; }
     template<unsigned matchLength>
     bool endsWith(const char (&prefix)[matchLength]) const
         { return m_impl ? m_impl->endsWith(prefix, matchLength - 1) : !matchLength; }
 
     void append(const String&);
     void append(LChar);
     void append(char c) { append(static_cast<LChar>(c)); }
     void append(UChar);
@@ skipping 176 matching lines @@
 
     template <typename CharacterType>
     void removeInternal(const CharacterType*, unsigned, int);
 
     template <typename CharacterType>
     void appendInternal(CharacterType);
 
     RefPtr<StringImpl> m_impl;
 };
 
+#undef DISPATCH_CASE_OP
+
 inline bool operator==(const String& a, const String& b) { return equal(a.impl(), b.impl()); }
 inline bool operator==(const String& a, const LChar* b) { return equal(a.impl(), b); }
 inline bool operator==(const String& a, const char* b) { return equal(a.impl(), reinterpret_cast<const LChar*>(b)); }
 inline bool operator==(const LChar* a, const String& b) { return equal(a, b.impl()); }
 inline bool operator==(const char* a, const String& b) { return equal(reinterpret_cast<const LChar*>(a), b.impl()); }
 template<size_t inlineCapacity>
 inline bool operator==(const Vector<char, inlineCapacity>& a, const String& b) { return equal(b.impl(), a.data(), a.size()); }
 template<size_t inlineCapacity>
 inline bool operator==(const String& a, const Vector<char, inlineCapacity>& b) { return b == a; }
 
@@ skipping 214 matching lines @@
 using WTF::charactersToFloat;
 using WTF::equal;
 using WTF::equalIgnoringCase;
 using WTF::find;
 using WTF::isAllSpecialCharacters;
 using WTF::isSpaceOrNewline;
 using WTF::reverseFind;
 
 #include "wtf/text/AtomicString.h"
 #endif // WTFString_h