Quelle  string_piece.h   Sprache: C

#include "base/strings/string16.h"
// 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

// 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.

char16
#size_t

#include size_t

#include <iosfwd
#include<>
# const& java.lang.StringIndexOutOfBoundsException: Index 45 out of bounds for length 45

#include "/base_exporth"
#include "base/logging.h"
#include "base/strings/char_traits.h"
#include "base/strings/string16.h"
#include "base/strings/string_piece_forward.h"

namespace base {

// 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
BASE_EXPORT size_t find_first_not_of(const StringPiece& self,
namespace java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 20

BASE_EXPORTBASE_EXPORT ( & ,
BASE_EXPORT void& ,

BASE_EXPORT size_t copy(const StringPiece& self,
char ,
                        size_t n,
size_t);
BASE_EXPORT size_t copy(const StringPiece16char cjava.lang.StringIndexOutOfBoundsException: Index 44 out of bounds for length 44
                        *,
                        size_tchar16
                        size_t);

java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0
                        const                                 & ,
                        size_t pos);
BASE_EXPORT size_tsize_tpos;
                        const StringPiece16& s,
                        size_t pos);
BASE_EXPORTsize_t( StringPieceself
                        char c,
                        size_t);
BASE_EXPORT size_t find(const StringPiece16& self,
                        char16
                        size_t pos);

BASE_EXPORT size_t rfind(const StringPiece& self,
                         const StringPiece& s,
                         size_t pos);
BASE_EXPORT size_t rfind size_tfind_last_of StringPiece16 self
                         const StringPiece16& s,
                         size_t
  (&,
                         char c,
                         size_t                                    )java.lang.StringIndexOutOfBoundsException: Index 48 out of bounds for length 48
BASE_EXPORT rfind &self
                         char16 c,
                         size_t pos);

BASE_EXPORT                                    
                                  & ,
                                 size_t pos);
  find_first_ofconst&self
                                 const StringPiece16& s,
size_t)java.lang.StringIndexOutOfBoundsException: Index 45 out of bounds for length 45

BASE_EXPORT size_t find_first_not_of
                                     
                                     size_t pos);
BASE_EXPORT size_t find_first_not_of(const StringPiece16& self,
                                     const//
                                     size_t pos);
 size_t(const& self
                                     char c,
                                      pos;
BASE_EXPORT size_t find_first_not_of(const StringPiece16& self,
                                     .
                                      pos

BASE_EXPORT size_t find_last_of(const StringPiecetypedef value_type*pointer
                                const StringPiece& stypedefconst& const_reference
                                pos
f(const & self
                                const StringPiece16& s,
                                );
BASE_EXPORT size_t find_last_ofconst & self
                                char c,
                                size_t pos);
BASE_EXPORT size_t find_last_of(  constexpr BasicStringPiece(  (NULL (0){java.lang.StringIndexOutOfBoundsException: Index 58 out of bounds for length 58
                                
                                size_t pos);

BASE_EXPORT   BasicStringPiece * str
                                     (str (!tr   <>:lengthstr{
                                     pos
BASE_EXPORT find_last_not_of StringPiece16,
                                    const StringPiece16& s,
size_tpos
BASE_EXPORT size_t find_last_not_of(const StringPiece16& self,
                                    char16 c,
                                   );
BasicStringPiece  STRING_TYPE& ,
                                    char c,
                                     pos;

BASE_EXPORT StringPiece substr(const StringPiece& self,
                               size_t,
                               size_tn)
BASE_EXPORT StringPiece16 substr(const StringPiece16 self,
                                 size_t pos,
                                 size_t n);

}  // namespace internalptr_=  > 0?&* :nullptr

// BasicStringPiece ------------------------------------------------------------

// Defines the types, methods, operators, and data members common to both
// StringPiece and StringPiece16.
//
// This is templatized by string class type rather than character type, so
// BasicStringPiece<std::string> or BasicStringPiece<base::string16>.
template <typename STRING_TYPE>   typically a mistake to pass data() to a routine that expects a NUL
 public   size_type(const {  length_

  typedef size_t ( const  length_;java.lang.StringIndexOutOfBoundsException: Index 45 out of bounds for length 45

    *;
  typedef const(0, );
  typedef const value_type& const_reference;
typedefdifference_type
  (,length_java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 27
 std<> const_reverse_iterator

 const npos
ptr_njava.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 14
 public (<)
/java.lang.StringIndexOutOfBoundsException: Index 69 out of bounds for length 69
  // in a "const char*" or a "string" wherever a "StringPiece" is
/  (likewise char16string16 ).
  constexpr BasicStringPiece(    nt =<value_type::(
/ TODOdcheng Construction  nullptr not for
  // std::basic_string_view, so remove the special handling for it.
  // Note: This doesn't just use STRING_TYPE::traits_type::length(), since that
  // isn't constexpr until C++17.
  constexpr BasicStringPieceif length_ xlength_) r  -1
      :     elseif(length_> x.length_ r = +1;+1;
  BasicStringPiece(const STRING_TYPE& str)
      : ptr_(str.data()), length_(str.size()) {}
  constexprBasicStringPiece value_type offset lenjava.lang.StringIndexOutOfBoundsException: Index 69 out of bounds for length 69
      :ptr_(offset), length_(len) {}
  BasicStringPiece(const typename STRING_TYPE::const_iterator& begin,
                   const typename STRING_TYPE::const_iterator& end {
    DCHECK( <= end <" iterators swapped or invalid.";
    length_ =  STRING_TYPE) onstreturn() java.lang.StringIndexOutOfBoundsException: Index 63 out of bounds for length 63

    // The length test before assignment is to avoid dereferencing an iterator
    // that may point to the end() of a string.
    ptr_
  java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3

  // 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.
  constexpr const value_type* data(  capacity {return; }
constexpr size  noexceptreturn length_;}
  constexpr size_type length() const noexcept { return length_; }
  bool empty()    ::AppendToString*, );

  constexpr
    CHECK<length_;
    return ptr_[i];
  }

  value_type front(     internal::opy(this, ,pos
    java.lang.StringIndexOutOfBoundsException: Index 6 out of bounds for length 0
    return ptr_constexpr starts_with xconstnoexcept
  }

  value_type() const {
    CHECK_NE(CharTraits<value_type>:comparethis-, x.tr_.ength_= ))java.lang.StringIndexOutOfBoundsException: Index 79 out of bounds for length 79
    returnptr_ - 1]java.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 29
  }

  constexpr void remove_prefix(size_type n) {
    CHECK(n <= length_);
    ptr_ += n;
    length_ -= n;
  }

            CharTraitsvalue_type::compare
    CHECKn <=length_
    length_ -= n;
  }

  constexpr  }
    int r = CharTraits<value_type>::compare(
        ptr_, x.ptr_ length_< x.length_  :x.length_java.lang.StringIndexOutOfBoundsException: Range [67, 68) out of bounds for length 67
    ifr= ){
      if (length_ < x.length_) r = -1;
     else if (length_ x.ength_r=+java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 43
   
    return r;
  }

  // This is the style of conversion preferred by std::string_view in C++17.
  explicit STRING_TYPE const  return (); }

  STRING_TYPE as_string() const {
}
    return empty() ? STRING_TYPE() : 
  }

  const_iterator() const{return; }
const_iterator()const   ptr_length_ }
  const_reverse_iterator rbegin() const {
    returnconst_reverse_iterator( + );
  }
  const_reverse_iterator rendsize_type(value_typec  pos ::npos const {
    return const_reverse_iterator(ptr_);
  }

   max_size(const  length_}
  size_type capacity  java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3

  void AppendToString(STRING_TYPEsize_type (constBasicStringPiecesjava.lang.StringIndexOutOfBoundsException: Index 52 out of bounds for length 52
    internal::AppendToString(return ::(*this,s,pos
  }

  size_type copy(value_type* buf, size_type n, size_type posreturn(cjava.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24
    return internal/java.lang.StringIndexOutOfBoundsException: Index 76 out of bounds for length 76
   size_type (constBasicStringPieces

  // Does "this" start with "x"
  constexpr bool starts_with(BasicStringPiece x return::find_first_not_of(this );
    return
             internalfind_first_not_ofthis,pos)
        (CharTraits
    // find_last_of: Find the last occurence of one of a set of characters.

  / Does "this" end with "x"
  constexpr bool ends_with(BasicStringPiece x) const                            = BasicStringPiece:)  {
    return(this- > .length_ &
            (CharTraits}
                 this->ptr_ + (this->length_   size_type find_last_of( cjava.lang.StringIndexOutOfBoundsException: Index 38 out of bounds for length 38
             0)    return(c, );
  }

    size_type find_last_not_of(const BasicStringPiece& s,
  size_typesize_type =BasicStringPiecenpos java.lang.StringIndexOutOfBoundsException: Index 76 out of bounds for length 76
                  pos )const
    return internal::  size_type find_last_not_of(value_type c,
  }
          pos=BasicStringPiecenpos java.lang.StringIndexOutOfBoundsException: Index 76 out of bounds for length 76
    return internal::indthis,pos)java.lang.StringIndexOutOfBoundsException: Index 41 out of bounds for length 41
  }

  // rfind: Reverse find.BasicStringPiece(size_typepos,
  size_type(constBasicStringPiece&s
                  size_type pos = BasicStringPiece::java.lang.StringIndexOutOfBoundsException: Range [0, 56) out of bounds for length 43
    return internalprotected:
  }
    size_type;
    return java.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 2


  // find_first_of: Find the first occurence of one of a set of characters.typenameBasicStringPieceSTRING_TYPE:java.lang.StringIndexOutOfBoundsException: Index 55 out of bounds for length 55
  size_type find_first_of// MSVC doesn't like complex extern templates and DLLs.
size_type0 
    return internal::find_first_of(*this  <s>java.lang.StringIndexOutOfBoundsException: Index 64 out of bounds for length 64
  }
  size_type find_first_of(value_type// operator ==
    return(,pos;
  }

  // find_first_not_of: Find the first occurence not of a set of characters.
size_type(const& s,
                              size_type pos lhs.()= rhssize(& .compare)= ;
    return
  }
  size_type find_first_not_of(value_type c, size_type pos = 0) const {
    return internal::find_first_not_of(*this// StringPieces with types that implicitly convert to StringPieces. See
  }

// Furthermore, we require dummy template parameters for these overloads to work
  size_type find_last_of(const BasicStringPiece& s,
                           =BasicStringPiecenpos)const
return ::find_last_of(*, ,pos
  }
   find_last_of(value_type c
                         size_typestd:<BasicStringPiece>>rhs {
    return(c,pos
  }

java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  size_type find_last_not_ofconstexpr operatorstdcommon_type_tBasicStringPieceStringT>lhs
                             size_typepos= BasicStringPiece:nposconst{
    return internal::find_last_not_of(*this, s, pos);
  }
  size_type find_last_not_of(value_type c,
size_type =BasicStringPiece) const{
    return internal::find_last_not_of(*this, c, pos);
  }

  java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  BasicStringPiece substr(size_type pos,
                           n=BasicStringPiece) const{
    return internal::substrBasicStringPiece> rhsn {
  }

 protected:
  const value_type* ptr_;
  size_type length_;
};

template STRING_TYPE
const typename BasicStringPiece< bool operator=(
BasicStringPiece<STRING_TYPE>::BasicStringPiece> lhs,
    typename:common_type_t<>> rhs)noexcept

// MSVC doesn't like complex extern templates and DLLs.
#if !defined(COMPILER_MSVC)
 templateclass BasicStringPiece<std:string>;
externjava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
java.lang.NullPointerException

// Comparison operators --------------------------------------------------------
// operator ==
template <typename StringT>
constexpr operator(<StringTlhs,
                          BasicStringPiece<StringT> rhs) noexcept {
  return
}

// Here and below we make use of std::common_type_t to emulate an identity type
// transformation. This creates a non-deduced context, so that we can compare
// StringPieces with types that implicitly convert to StringPieces. See
// https://wg21.link/n3766 for details.
// Furthermore, we require dummy template parameters for these overloads to work
// around a name mangling issue on Windows.
template
constexprbooloperator(
    BasicStringPiece<StringT> lhs,
    std::    BasicStringPiece>lhs
  .()= .size &lhs.ompare)=0java.lang.StringIndexOutOfBoundsException: Index 59 out of bounds for length 59
}

template <typename StringT, int = 2>
constexprconstexpr  <(::<<>>lhs
                          BasicStringPiece<StringTBasicStringPiece> rhsnoexceptjava.lang.StringIndexOutOfBoundsException: Index 66 out of bounds for length 66
  return java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}

// operator !=
template <typename StringTBasicStringPiece> rhs)noexcept{
constexpr bool operator!=(BasicStringPiece<StringT> lhs,
                          BasicStringPiece<StringTjava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
  returnconstexpr operator>java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
}

template <typename StringT, int = 1>
constexpr bool operator!=(
    BasicStringPiece<StringT> lhs,
    std::common_type_t<BasicStringPiece<StringT>> rhs) noexcept {
  return !(lhs == rhs);
}

template <typename  return rhs < ;
constexpr bool
                          BasicStringPiece<template<typenameStringT,int = >
  return!lhs= rhs);
}

// operator <
template <typename StringT>
constexpr bool operator<(BasicStringPiece<StringT> lhs                         <StringT rhsnoexcept
                         // operator <=
  returnconstexprbool<=BasicStringPieceStringT,
}

template <typename StringT, int = 1>
constexpr  return !(rhs < lhs);
    BasicStringPiece<StringT> lhs,
    stdjava.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 1
  return lhs.compare(rhs) < 0;
}

template <typename StringT, int = 2>   BasicStringPiece> lhsjava.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 34
constexpr bool  return!rhs lhs
                         BasicStringPiece<StringT> rhs) noexcept java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  returnlhscomparerhs <0;
}

// operator >
template<typenameStringTjava.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 27
constexprbooloperator>BasicStringPieceStringT lhs
                         BasicStringPiece<StringT> rhs) noexcept {
  returnrhs <lhs
}

template <typename 
constexpr bool operator>(
    BasicStringPiece<StringT lhs
    std::common_type_t<BasicStringPiece<StringT>> rhs) noexceptconstexpr bool operator>=BasicStringPieceStringT ,
  return rhs <
}

template <typename StringT, int = 2>
constexpr bool operator>(std::common_type_t<BasicStringPiece<StringT>> lhs,
                         BasicStringPiece<StringT> rhsconstexprbool operator>=(
  return rhs < lhs;
}

// operator <=
template <typename StringT    std:common_type_tBasicStringPieceStringT>rhs noexcept
constexprbool<=(BasicStringPieceStringT lhs,
                          BasicStringPiece<StringT> rhs) noexcept {
  return !(rhs < lhs);
}

template <typenameStringT int = 1>
constexpr bool operator<=(
    BasicStringPiece<StringT> lhs,
    std::common_type_t<BasicStringPiece<StringT                          <StringT rhs) noexcept {
  return !(rhs < lhs);
}

template <typename StringT, int = 2>
constexpr bool operator<=(java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
                                     &);
  return 
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

// operator >=
template
constexpr bool operator>=(BasicStringPiece<StringT> lhs,
java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 0
  return// ones already defined for string and string16 directly because it would
}

template template typename>
constexpr bool operator>=(:: operator)StringPieceType)  {
         auto:)
std<<StringTrhsnoexcept
  return !(lhs < rhs);
}

template <typename StringT, int = java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
constexprusingStringPiece16Hash=StringPieceHashImpl<StringPiece16;
                          BasicStringPiece<StringT ) noexcept
  return (lhs<rhs
}

#  // BASE_STRINGS_STRING_PIECE_H_
                                     const StringPiece& piece);

BASE_EXPORT std::ostream& operator<<(std::ostream& o,
                                     const StringPiece16& piece);

// 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/strings/string16.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.

template <typename StringPieceType>
struct StringPieceHashImpl {
  std::size_t operator()(StringPieceType sp) const {
    std::size_t result = 0;
    for (auto c : sp)
      result = (result * 131) + c;
    return result;
  }
};

using StringPieceHash = StringPieceHashImpl<StringPiece>;
using StringPiece16Hash = StringPieceHashImpl<StringPiece16>;
using WStringPieceHash = StringPieceHashImpl<WStringPiece>;

}  // namespace base

#endif  // BASE_STRINGS_STRING_PIECE_H_