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Side by Side Diff: base/string_piece.h

Issue 6081007: Start sorting methods in class declarations. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: nits Created 9 years, 11 months ago
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1 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 // Copied from strings/stringpiece.h with modifications 4 // Copied from strings/stringpiece.h with modifications
5 // 5 //
6 // A string-like object that points to a sized piece of memory. 6 // A string-like object that points to a sized piece of memory.
7 // 7 //
8 // Functions or methods may use const StringPiece& parameters to accept either 8 // Functions or methods may use const StringPiece& parameters to accept either
9 // a "const char*" or a "string" value that will be implicitly converted to 9 // a "const char*" or a "string" value that will be implicitly converted to
10 // a StringPiece. The implicit conversion means that it is often appropriate 10 // a StringPiece. The implicit conversion means that it is often appropriate
11 // to include this .h file in other files rather than forward-declaring 11 // to include this .h file in other files rather than forward-declaring
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22 #include <algorithm> 22 #include <algorithm>
23 #include <iosfwd> 23 #include <iosfwd>
24 #include <string> 24 #include <string>
25 25
26 #include "base/basictypes.h" 26 #include "base/basictypes.h"
27 27
28 namespace base { 28 namespace base {
29 29
30 class StringPiece { 30 class StringPiece {
31 public: 31 public:
32 // standard STL container boilerplate
32 typedef size_t size_type; 33 typedef size_t size_type;
34 typedef char value_type;
35 typedef const char* pointer;
36 typedef const char& reference;
37 typedef const char& const_reference;
38 typedef ptrdiff_t difference_type;
39 typedef const char* const_iterator;
40 typedef const char* iterator;
41 typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
42 typedef std::reverse_iterator<iterator> reverse_iterator;
33 43
34 private: 44 static const size_type npos;
35 const char* ptr_;
36 size_type length_;
37 45
38 public: 46 public:
39 // We provide non-explicit singleton constructors so users can pass 47 // We provide non-explicit singleton constructors so users can pass
40 // in a "const char*" or a "string" wherever a "StringPiece" is 48 // in a "const char*" or a "string" wherever a "StringPiece" is
41 // expected. 49 // expected.
42 StringPiece() : ptr_(NULL), length_(0) { } 50 StringPiece() : ptr_(NULL), length_(0) { }
43 StringPiece(const char* str) 51 StringPiece(const char* str)
44 : ptr_(str), length_((str == NULL) ? 0 : strlen(str)) { } 52 : ptr_(str), length_((str == NULL) ? 0 : strlen(str)) { }
45 StringPiece(const std::string& str) 53 StringPiece(const std::string& str)
46 : ptr_(str.data()), length_(str.size()) { } 54 : ptr_(str.data()), length_(str.size()) { }
(...skipping 59 matching lines...) Expand 10 before | Expand all | Expand 10 after
106 return ((length_ >= x.length_) && 114 return ((length_ >= x.length_) &&
107 (wordmemcmp(ptr_, x.ptr_, x.length_) == 0)); 115 (wordmemcmp(ptr_, x.ptr_, x.length_) == 0));
108 } 116 }
109 117
110 // Does "this" end with "x" 118 // Does "this" end with "x"
111 bool ends_with(const StringPiece& x) const { 119 bool ends_with(const StringPiece& x) const {
112 return ((length_ >= x.length_) && 120 return ((length_ >= x.length_) &&
113 (wordmemcmp(ptr_ + (length_-x.length_), x.ptr_, x.length_) == 0)); 121 (wordmemcmp(ptr_ + (length_-x.length_), x.ptr_, x.length_) == 0));
114 } 122 }
115 123
116 // standard STL container boilerplate
117 typedef char value_type;
118 typedef const char* pointer;
119 typedef const char& reference;
120 typedef const char& const_reference;
121 typedef ptrdiff_t difference_type;
122 static const size_type npos;
123 typedef const char* const_iterator;
124 typedef const char* iterator;
125 typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
126 typedef std::reverse_iterator<iterator> reverse_iterator;
127 iterator begin() const { return ptr_; } 124 iterator begin() const { return ptr_; }
128 iterator end() const { return ptr_ + length_; } 125 iterator end() const { return ptr_ + length_; }
129 const_reverse_iterator rbegin() const { 126 const_reverse_iterator rbegin() const {
130 return const_reverse_iterator(ptr_ + length_); 127 return const_reverse_iterator(ptr_ + length_);
131 } 128 }
132 const_reverse_iterator rend() const { 129 const_reverse_iterator rend() const {
133 return const_reverse_iterator(ptr_); 130 return const_reverse_iterator(ptr_);
134 } 131 }
135 132
136 size_type max_size() const { return length_; } 133 size_type max_size() const { return length_; }
(...skipping 17 matching lines...) Expand all
154 return rfind(c, pos); 151 return rfind(c, pos);
155 } 152 }
156 size_type find_last_not_of(const StringPiece& s, size_type pos = npos) const; 153 size_type find_last_not_of(const StringPiece& s, size_type pos = npos) const;
157 size_type find_last_not_of(char c, size_type pos = npos) const; 154 size_type find_last_not_of(char c, size_type pos = npos) const;
158 155
159 StringPiece substr(size_type pos, size_type n = npos) const; 156 StringPiece substr(size_type pos, size_type n = npos) const;
160 157
161 static int wordmemcmp(const char* p, const char* p2, size_type N) { 158 static int wordmemcmp(const char* p, const char* p2, size_type N) {
162 return memcmp(p, p2, N); 159 return memcmp(p, p2, N);
163 } 160 }
161
162 private:
163 const char* ptr_;
164 size_type length_;
164 }; 165 };
165 166
166 bool operator==(const StringPiece& x, const StringPiece& y); 167 bool operator==(const StringPiece& x, const StringPiece& y);
167 168
168 inline bool operator!=(const StringPiece& x, const StringPiece& y) { 169 inline bool operator!=(const StringPiece& x, const StringPiece& y) {
169 return !(x == y); 170 return !(x == y);
170 } 171 }
171 172
172 inline bool operator<(const StringPiece& x, const StringPiece& y) { 173 inline bool operator<(const StringPiece& x, const StringPiece& y) {
173 const int r = StringPiece::wordmemcmp(x.data(), y.data(), 174 const int r = StringPiece::wordmemcmp(x.data(), y.data(),
(...skipping 12 matching lines...) Expand all
186 inline bool operator>=(const StringPiece& x, const StringPiece& y) { 187 inline bool operator>=(const StringPiece& x, const StringPiece& y) {
187 return !(x < y); 188 return !(x < y);
188 } 189 }
189 190
190 // allow StringPiece to be logged (needed for unit testing). 191 // allow StringPiece to be logged (needed for unit testing).
191 extern std::ostream& operator<<(std::ostream& o, const StringPiece& piece); 192 extern std::ostream& operator<<(std::ostream& o, const StringPiece& piece);
192 193
193 } // namespace base 194 } // namespace base
194 195
195 #endif // BASE_STRING_PIECE_H_ 196 #endif // BASE_STRING_PIECE_H_
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