Chromium Code Reviews
chromiumcodereview-hr@appspot.gserviceaccount.com (chromiumcodereview-hr) | Please choose your nickname with Settings | Help | Chromium Project | Gerrit Changes | Sign out
(427)

Issues Search
    My Issues | Starred     Open | Closed | All

Unified Diff: base/strings/string_piece.h

Issue 1647803004: Move base to DEPS (Closed) Base URL: git@github.com:domokit/mojo.git@master
Patch Set: Created 4 years, 11 months ago
Use n/p to move between diff chunks; N/P to move between comments. Draft comments are only viewable by you.
Jump to:
View side-by-side diff with in-line comments
Download patch
« no previous file with comments | « base/strings/string_number_conversions_unittest.cc ('k') | base/strings/string_piece.cc » ('j') | no next file with comments »
Expand Comments ('e') | Collapse Comments ('c') | Show Comments Hide Comments ('s')
Index: base/strings/string_piece.h
diff --git a/base/strings/string_piece.h b/base/strings/string_piece.h
deleted file mode 100644
index a83b7d8f661624ff36ee225a8216f33bf26d2529..0000000000000000000000000000000000000000
--- a/base/strings/string_piece.h
+++ /dev/null
@@ -1,452 +0,0 @@
-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-// Copied from strings/stringpiece.h with modifications
-//
-// A string-like object that points to a sized piece of memory.
-//
-// You can use StringPiece as a function or method parameter. A StringPiece
-// parameter can receive a double-quoted string literal argument, a "const
-// char*" argument, a string argument, or a StringPiece argument with no data
-// copying. Systematic use of StringPiece for arguments reduces data
-// copies and strlen() calls.
-//
-// Prefer passing StringPieces by value:
-// void MyFunction(StringPiece arg);
-// If circumstances require, you may also pass by const reference:
-// void MyFunction(const StringPiece& arg); // not preferred
-// Both of these have the same lifetime semantics. Passing by value
-// generates slightly smaller code. For more discussion, Googlers can see
-// the thread go/stringpiecebyvalue on c-users.
-
-#ifndef BASE_STRINGS_STRING_PIECE_H_
-#define BASE_STRINGS_STRING_PIECE_H_
-
-#include <stddef.h>
-
-#include <iosfwd>
-#include <string>
-
-#include "base/base_export.h"
-#include "base/basictypes.h"
-#include "base/containers/hash_tables.h"
-#include "base/strings/string16.h"
-
-namespace base {
-
-template <typename STRING_TYPE> class BasicStringPiece;
-typedef BasicStringPiece<std::string> StringPiece;
-typedef BasicStringPiece<string16> StringPiece16;
-
-// internal --------------------------------------------------------------------
-
-// Many of the StringPiece functions use different implementations for the
-// 8-bit and 16-bit versions, and we don't want lots of template expansions in
-// this (very common) header that will slow down compilation.
-//
-// So here we define overloaded functions called by the StringPiece template.
-// For those that share an implementation, the two versions will expand to a
-// template internal to the .cc file.
-namespace internal {
-
-BASE_EXPORT void CopyToString(const StringPiece& self, std::string* target);
-BASE_EXPORT void CopyToString(const StringPiece16& self, string16* target);
-
-BASE_EXPORT void AppendToString(const StringPiece& self, std::string* target);
-BASE_EXPORT void AppendToString(const StringPiece16& self, string16* target);
-
-BASE_EXPORT size_t copy(const StringPiece& self,
- char* buf,
- size_t n,
- size_t pos);
-BASE_EXPORT size_t copy(const StringPiece16& self,
- char16* buf,
- size_t n,
- size_t pos);
-
-BASE_EXPORT size_t find(const StringPiece& self,
- const StringPiece& s,
- size_t pos);
-BASE_EXPORT size_t find(const StringPiece16& self,
- const StringPiece16& s,
- size_t pos);
-BASE_EXPORT size_t find(const StringPiece& self,
- char c,
- size_t pos);
-BASE_EXPORT size_t find(const StringPiece16& self,
- char16 c,
- size_t pos);
-
-BASE_EXPORT size_t rfind(const StringPiece& self,
- const StringPiece& s,
- size_t pos);
-BASE_EXPORT size_t rfind(const StringPiece16& self,
- const StringPiece16& s,
- size_t pos);
-BASE_EXPORT size_t rfind(const StringPiece& self,
- char c,
- size_t pos);
-BASE_EXPORT size_t rfind(const StringPiece16& self,
- char16 c,
- size_t pos);
-
-BASE_EXPORT size_t find_first_of(const StringPiece& self,
- const StringPiece& s,
- size_t pos);
-BASE_EXPORT size_t find_first_of(const StringPiece16& self,
- const StringPiece16& s,
- size_t pos);
-
-BASE_EXPORT size_t find_first_not_of(const StringPiece& self,
- const StringPiece& s,
- size_t pos);
-BASE_EXPORT size_t find_first_not_of(const StringPiece16& self,
- const StringPiece16& s,
- size_t pos);
-BASE_EXPORT size_t find_first_not_of(const StringPiece& self,
- char c,
- size_t pos);
-BASE_EXPORT size_t find_first_not_of(const StringPiece16& self,
- char16 c,
- size_t pos);
-
-BASE_EXPORT size_t find_last_of(const StringPiece& self,
- const StringPiece& s,
- size_t pos);
-BASE_EXPORT size_t find_last_of(const StringPiece16& self,
- const StringPiece16& s,
- size_t pos);
-BASE_EXPORT size_t find_last_of(const StringPiece& self,
- char c,
- size_t pos);
-BASE_EXPORT size_t find_last_of(const StringPiece16& self,
- char16 c,
- size_t pos);
-
-BASE_EXPORT size_t find_last_not_of(const StringPiece& self,
- const StringPiece& s,
- size_t pos);
-BASE_EXPORT size_t find_last_not_of(const StringPiece16& self,
- const StringPiece16& s,
- size_t pos);
-BASE_EXPORT size_t find_last_not_of(const StringPiece16& self,
- char16 c,
- size_t pos);
-BASE_EXPORT size_t find_last_not_of(const StringPiece& self,
- char c,
- size_t pos);
-
-BASE_EXPORT StringPiece substr(const StringPiece& self,
- size_t pos,
- size_t n);
-BASE_EXPORT StringPiece16 substr(const StringPiece16& self,
- size_t pos,
- size_t n);
-
-} // namespace internal
-
-// BasicStringPiece ------------------------------------------------------------
-
-// Defines the types, methods, operators, and data members common to both
-// StringPiece and StringPiece16. Do not refer to this class directly, but
-// rather to BasicStringPiece, StringPiece, or StringPiece16.
-//
-// This is templatized by string class type rather than character type, so
-// BasicStringPiece<std::string> or BasicStringPiece<base::string16>.
-template <typename STRING_TYPE> class BasicStringPiece {
- public:
- // Standard STL container boilerplate.
- typedef size_t size_type;
- typedef typename STRING_TYPE::value_type value_type;
- typedef const value_type* pointer;
- typedef const value_type& reference;
- typedef const value_type& const_reference;
- typedef ptrdiff_t difference_type;
- typedef const value_type* const_iterator;
- typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
-
- static const size_type npos;
-
- public:
- // We provide non-explicit singleton constructors so users can pass
- // in a "const char*" or a "string" wherever a "StringPiece" is
- // expected (likewise for char16, string16, StringPiece16).
- BasicStringPiece() : ptr_(NULL), length_(0) {}
- BasicStringPiece(const value_type* str)
- : ptr_(str),
- length_((str == NULL) ? 0 : STRING_TYPE::traits_type::length(str)) {}
- BasicStringPiece(const STRING_TYPE& str)
- : ptr_(str.data()), length_(str.size()) {}
- BasicStringPiece(const value_type* offset, size_type len)
- : ptr_(offset), length_(len) {}
- BasicStringPiece(const typename STRING_TYPE::const_iterator& begin,
- const typename STRING_TYPE::const_iterator& end)
- : ptr_((end > begin) ? &(*begin) : NULL),
- length_((end > begin) ? (size_type)(end - begin) : 0) {}
-
- // data() may return a pointer to a buffer with embedded NULs, and the
- // returned buffer may or may not be null terminated. Therefore it is
- // typically a mistake to pass data() to a routine that expects a NUL
- // terminated string.
- const value_type* data() const { return ptr_; }
- size_type size() const { return length_; }
- size_type length() const { return length_; }
- bool empty() const { return length_ == 0; }
-
- void clear() {
- ptr_ = NULL;
- length_ = 0;
- }
- void set(const value_type* data, size_type len) {
- ptr_ = data;
- length_ = len;
- }
- void set(const value_type* str) {
- ptr_ = str;
- length_ = str ? STRING_TYPE::traits_type::length(str) : 0;
- }
-
- value_type operator[](size_type i) const { return ptr_[i]; }
-
- void remove_prefix(size_type n) {
- ptr_ += n;
- length_ -= n;
- }
-
- void remove_suffix(size_type n) {
- length_ -= n;
- }
-
- int compare(const BasicStringPiece<STRING_TYPE>& x) const {
- int r = wordmemcmp(
- ptr_, x.ptr_, (length_ < x.length_ ? length_ : x.length_));
- if (r == 0) {
- if (length_ < x.length_) r = -1;
- else if (length_ > x.length_) r = +1;
- }
- return r;
- }
-
- STRING_TYPE as_string() const {
- // std::string doesn't like to take a NULL pointer even with a 0 size.
- return empty() ? STRING_TYPE() : STRING_TYPE(data(), size());
- }
-
- const_iterator begin() const { return ptr_; }
- const_iterator end() const { return ptr_ + length_; }
- const_reverse_iterator rbegin() const {
- return const_reverse_iterator(ptr_ + length_);
- }
- const_reverse_iterator rend() const {
- return const_reverse_iterator(ptr_);
- }
-
- size_type max_size() const { return length_; }
- size_type capacity() const { return length_; }
-
- static int wordmemcmp(const value_type* p,
- const value_type* p2,
- size_type N) {
- return STRING_TYPE::traits_type::compare(p, p2, N);
- }
-
- // Sets the value of the given string target type to be the current string.
- // This saves a temporary over doing |a = b.as_string()|
- void CopyToString(STRING_TYPE* target) const {
- internal::CopyToString(*this, target);
- }
-
- void AppendToString(STRING_TYPE* target) const {
- internal::AppendToString(*this, target);
- }
-
- size_type copy(value_type* buf, size_type n, size_type pos = 0) const {
- return internal::copy(*this, buf, n, pos);
- }
-
- // Does "this" start with "x"
- bool starts_with(const BasicStringPiece& x) const {
- return ((this->length_ >= x.length_) &&
- (wordmemcmp(this->ptr_, x.ptr_, x.length_) == 0));
- }
-
- // Does "this" end with "x"
- bool ends_with(const BasicStringPiece& x) const {
- return ((this->length_ >= x.length_) &&
- (wordmemcmp(this->ptr_ + (this->length_-x.length_),
- x.ptr_, x.length_) == 0));
- }
-
- // find: Search for a character or substring at a given offset.
- size_type find(const BasicStringPiece<STRING_TYPE>& s,
- size_type pos = 0) const {
- return internal::find(*this, s, pos);
- }
- size_type find(value_type c, size_type pos = 0) const {
- return internal::find(*this, c, pos);
- }
-
- // rfind: Reverse find.
- size_type rfind(const BasicStringPiece& s,
- size_type pos = BasicStringPiece::npos) const {
- return internal::rfind(*this, s, pos);
- }
- size_type rfind(value_type c, size_type pos = BasicStringPiece::npos) const {
- return internal::rfind(*this, c, pos);
- }
-
- // find_first_of: Find the first occurence of one of a set of characters.
- size_type find_first_of(const BasicStringPiece& s,
- size_type pos = 0) const {
- return internal::find_first_of(*this, s, pos);
- }
- size_type find_first_of(value_type c, size_type pos = 0) const {
- return find(c, pos);
- }
-
- // find_first_not_of: Find the first occurence not of a set of characters.
- size_type find_first_not_of(const BasicStringPiece& s,
- size_type pos = 0) const {
- return internal::find_first_not_of(*this, s, pos);
- }
- size_type find_first_not_of(value_type c, size_type pos = 0) const {
- return internal::find_first_not_of(*this, c, pos);
- }
-
- // find_last_of: Find the last occurence of one of a set of characters.
- size_type find_last_of(const BasicStringPiece& s,
- size_type pos = BasicStringPiece::npos) const {
- return internal::find_last_of(*this, s, pos);
- }
- size_type find_last_of(value_type c,
- size_type pos = BasicStringPiece::npos) const {
- return rfind(c, pos);
- }
-
- // find_last_not_of: Find the last occurence not of a set of characters.
- size_type find_last_not_of(const BasicStringPiece& s,
- size_type pos = BasicStringPiece::npos) const {
- return internal::find_last_not_of(*this, s, pos);
- }
- size_type find_last_not_of(value_type c,
- size_type pos = BasicStringPiece::npos) const {
- return internal::find_last_not_of(*this, c, pos);
- }
-
- // substr.
- BasicStringPiece substr(size_type pos,
- size_type n = BasicStringPiece::npos) const {
- return internal::substr(*this, pos, n);
- }
-
- protected:
- const value_type* ptr_;
- size_type length_;
-};
-
-template <typename STRING_TYPE>
-const typename BasicStringPiece<STRING_TYPE>::size_type
-BasicStringPiece<STRING_TYPE>::npos =
- typename BasicStringPiece<STRING_TYPE>::size_type(-1);
-
-// MSVC doesn't like complex extern templates and DLLs.
-#if !defined(COMPILER_MSVC)
-extern template class BASE_EXPORT BasicStringPiece<std::string>;
-extern template class BASE_EXPORT BasicStringPiece<string16>;
-#endif
-
-// StingPiece operators --------------------------------------------------------
-
-BASE_EXPORT bool operator==(const StringPiece& x, const StringPiece& y);
-
-inline bool operator!=(const StringPiece& x, const StringPiece& y) {
- return !(x == y);
-}
-
-inline bool operator<(const StringPiece& x, const StringPiece& y) {
- const int r = StringPiece::wordmemcmp(
- x.data(), y.data(), (x.size() < y.size() ? x.size() : y.size()));
- return ((r < 0) || ((r == 0) && (x.size() < y.size())));
-}
-
-inline bool operator>(const StringPiece& x, const StringPiece& y) {
- return y < x;
-}
-
-inline bool operator<=(const StringPiece& x, const StringPiece& y) {
- return !(x > y);
-}
-
-inline bool operator>=(const StringPiece& x, const StringPiece& y) {
- return !(x < y);
-}
-
-// StringPiece16 operators -----------------------------------------------------
-
-inline bool operator==(const StringPiece16& x, const StringPiece16& y) {
- if (x.size() != y.size())
- return false;
-
- return StringPiece16::wordmemcmp(x.data(), y.data(), x.size()) == 0;
-}
-
-inline bool operator!=(const StringPiece16& x, const StringPiece16& y) {
- return !(x == y);
-}
-
-inline bool operator<(const StringPiece16& x, const StringPiece16& y) {
- const int r = StringPiece16::wordmemcmp(
- x.data(), y.data(), (x.size() < y.size() ? x.size() : y.size()));
- return ((r < 0) || ((r == 0) && (x.size() < y.size())));
-}
-
-inline bool operator>(const StringPiece16& x, const StringPiece16& y) {
- return y < x;
-}
-
-inline bool operator<=(const StringPiece16& x, const StringPiece16& y) {
- return !(x > y);
-}
-
-inline bool operator>=(const StringPiece16& x, const StringPiece16& y) {
- return !(x < y);
-}
-
-BASE_EXPORT std::ostream& operator<<(std::ostream& o,
- const StringPiece& piece);
-
-} // namespace base
-
-// Hashing ---------------------------------------------------------------------
-
-// We provide appropriate hash functions so StringPiece and StringPiece16 can
-// be used as keys in hash sets and maps.
-
-// This hash function is copied from base/containers/hash_tables.h. We don't
-// use the ones already defined for string and string16 directly because it
-// would require the string constructors to be called, which we don't want.
-#define HASH_STRING_PIECE(StringPieceType, string_piece) \
- std::size_t result = 0; \
- for (StringPieceType::const_iterator i = string_piece.begin(); \
- i != string_piece.end(); ++i) \
- result = (result * 131) + *i; \
- return result; \
-
-namespace BASE_HASH_NAMESPACE {
-
-template<>
-struct hash<base::StringPiece> {
- std::size_t operator()(const base::StringPiece& sp) const {
- HASH_STRING_PIECE(base::StringPiece, sp);
- }
-};
-template<>
-struct hash<base::StringPiece16> {
- std::size_t operator()(const base::StringPiece16& sp16) const {
- HASH_STRING_PIECE(base::StringPiece16, sp16);
- }
-};
-
-} // namespace BASE_HASH_NAMESPACE
-
-#endif // BASE_STRINGS_STRING_PIECE_H_
« no previous file with comments | « base/strings/string_number_conversions_unittest.cc ('k') | base/strings/string_piece.cc » ('j') | no next file with comments »

Powered by Google App Engine
This is Rietveld 408576698