@ -62,6 +62,12 @@ ABSL_NAMESPACE_END
# define ABSL_INTERNAL_STRING_VIEW_MEMCMP memcmp
# endif // ABSL_HAVE_BUILTIN(__builtin_memcmp)
# if defined(__cplusplus) && __cplusplus >= 201402L
# define ABSL_INTERNAL_STRING_VIEW_CXX14_CONSTEXPR constexpr
# else
# define ABSL_INTERNAL_STRING_VIEW_CXX14_CONSTEXPR
# endif
namespace absl {
ABSL_NAMESPACE_BEGIN
@ -265,9 +271,7 @@ class string_view {
// string_view::size()
//
// Returns the number of characters in the `string_view`.
constexpr size_type size ( ) const noexcept {
return length_ ;
}
constexpr size_type size ( ) const noexcept { return length_ ; }
// string_view::length()
//
@ -334,7 +338,7 @@ class string_view {
//
// Removes the first `n` characters from the `string_view`. Note that the
// underlying string is not changed, only the view.
void remove_prefix ( size_type n ) {
ABSL_INTERNAL_STRING_VIEW_CXX14_CONSTEXPR void remove_prefix ( size_type n ) {
ABSL_HARDENING_ASSERT ( n < = length_ ) ;
ptr_ + = n ;
length_ - = n ;
@ -344,7 +348,7 @@ class string_view {
//
// Removes the last `n` characters from the `string_view`. Note that the
// underlying string is not changed, only the view.
void remove_suffix ( size_type n ) {
ABSL_INTERNAL_STRING_VIEW_CXX14_CONSTEXPR void remove_suffix ( size_type n ) {
ABSL_HARDENING_ASSERT ( n < = length_ ) ;
length_ - = n ;
}
@ -352,7 +356,7 @@ class string_view {
// string_view::swap()
//
// Swaps this `string_view` with another `string_view`.
void swap ( string_view & s ) noexcept {
ABSL_INTERNAL_STRING_VIEW_CXX14_CONSTEXPR void swap ( string_view & s ) noexcept {
auto t = * this ;
* this = s ;
s = t ;
@ -389,7 +393,7 @@ class string_view {
// `n`) as another string_view. This function throws `std::out_of_bounds` if
// `pos > size`.
// Use absl::ClippedSubstr if you need a truncating substr operation.
constexpr string_view substr ( size_type pos , size_type n = npos ) const {
constexpr string_view substr ( size_type pos = 0 , size_type n = npos ) const {
return ABSL_PREDICT_FALSE ( pos > length_ )
? ( base_internal : : ThrowStdOutOfRange (
" absl::string_view::substr " ) ,
@ -413,31 +417,31 @@ class string_view {
// Overload of `string_view::compare()` for comparing a substring of the
// 'string_view` and another `absl::string_view`.
int compare ( size_type pos1 , size_type count1 , string_view v ) const {
constexpr int compare ( size_type pos1 , size_type count1 , string_view v ) const {
return substr ( pos1 , count1 ) . compare ( v ) ;
}
// Overload of `string_view::compare()` for comparing a substring of the
// `string_view` and a substring of another `absl::string_view`.
int compare ( size_type pos1 , size_type count1 , string_view v , size_type pos2 ,
size_type count2 ) const {
constexpr int compare ( size_type pos1 , size_type count1 , string_view v ,
size_type pos2 , size_type count2 ) const {
return substr ( pos1 , count1 ) . compare ( v . substr ( pos2 , count2 ) ) ;
}
// Overload of `string_view::compare()` for comparing a `string_view` and a
// a different C-style string `s`.
int compare ( const char * s ) const { return compare ( string_view ( s ) ) ; }
// a different C-style string `s`.
constexpr int compare ( const char * s ) const { return compare ( string_view ( s ) ) ; }
// Overload of `string_view::compare()` for comparing a substring of the
// `string_view` and a different string C-style string `s`.
int compare ( size_type pos1 , size_type count1 , const char * s ) const {
constexpr int compare ( size_type pos1 , size_type count1 , const char * s ) const {
return substr ( pos1 , count1 ) . compare ( string_view ( s ) ) ;
}
// Overload of `string_view::compare()` for comparing a substring of the
// `string_view` and a substring of a different C-style string `s`.
int compare ( size_type pos1 , size_type count1 , const char * s ,
size_type count2 ) const {
constexpr int compare ( size_type pos1 , size_type count1 , const char * s ,
size_type count2 ) const {
return substr ( pos1 , count1 ) . compare ( string_view ( s , count2 ) ) ;
}
@ -454,48 +458,92 @@ class string_view {
// within the `string_view`.
size_type find ( char c , size_type pos = 0 ) const noexcept ;
// Overload of `string_view::find()` for finding a substring of a different
// C-style string `s` within the `string_view`.
size_type find ( const char * s , size_type pos , size_type count ) const {
return find ( string_view ( s , count ) , pos ) ;
}
// Overload of `string_view::find()` for finding a different C-style string
// `s` within the `string_view`.
size_type find ( const char * s , size_type pos = 0 ) const {
return find ( string_view ( s ) , pos ) ;
}
// string_view::rfind()
//
// Finds the last occurrence of a substring `s` within the `string_view`,
// returning the position of the first character's match, or `npos` if no
// match was found.
size_type rfind ( string_view s , size_type pos = npos ) const
noexcept ;
size_type rfind ( string_view s , size_type pos = npos ) const noexcept ;
// Overload of `string_view::rfind()` for finding the last given character `c`
// within the `string_view`.
size_type rfind ( char c , size_type pos = npos ) const noexcept ;
// Overload of `string_view::rfind()` for finding a substring of a different
// C-style string `s` within the `string_view`.
size_type rfind ( const char * s , size_type pos , size_type count ) const {
return rfind ( string_view ( s , count ) , pos ) ;
}
// Overload of `string_view::rfind()` for finding a different C-style string
// `s` within the `string_view`.
size_type rfind ( const char * s , size_type pos = npos ) const {
return rfind ( string_view ( s ) , pos ) ;
}
// string_view::find_first_of()
//
// Finds the first occurrence of any of the characters in `s` within the
// `string_view`, returning the start position of the match, or `npos` if no
// match was found.
size_type find_first_of ( string_view s , size_type pos = 0 ) const
noexcept ;
size_type find_first_of ( string_view s , size_type pos = 0 ) const noexcept ;
// Overload of `string_view::find_first_of()` for finding a character `c`
// within the `string_view`.
size_type find_first_of ( char c , size_type pos = 0 ) const
noexcept {
size_type find_first_of ( char c , size_type pos = 0 ) const noexcept {
return find ( c , pos ) ;
}
// Overload of `string_view::find_first_of()` for finding a substring of a
// different C-style string `s` within the `string_view`.
size_type find_first_of ( const char * s , size_type pos ,
size_type count ) const {
return find_first_of ( string_view ( s , count ) , pos ) ;
}
// Overload of `string_view::find_first_of()` for finding a different C-style
// string `s` within the `string_view`.
size_type find_first_of ( const char * s , size_type pos = 0 ) const {
return find_first_of ( string_view ( s ) , pos ) ;
}
// string_view::find_last_of()
//
// Finds the last occurrence of any of the characters in `s` within the
// `string_view`, returning the start position of the match, or `npos` if no
// match was found.
size_type find_last_of ( string_view s , size_type pos = npos ) const
noexcept ;
size_type find_last_of ( string_view s , size_type pos = npos ) const noexcept ;
// Overload of `string_view::find_last_of()` for finding a character `c`
// within the `string_view`.
size_type find_last_of ( char c , size_type pos = npos ) const
noexcept {
size_type find_last_of ( char c , size_type pos = npos ) const noexcept {
return rfind ( c , pos ) ;
}
// Overload of `string_view::find_last_of()` for finding a substring of a
// different C-style string `s` within the `string_view`.
size_type find_last_of ( const char * s , size_type pos , size_type count ) const {
return find_last_of ( string_view ( s , count ) , pos ) ;
}
// Overload of `string_view::find_last_of()` for finding a different C-style
// string `s` within the `string_view`.
size_type find_last_of ( const char * s , size_type pos = npos ) const {
return find_last_of ( string_view ( s ) , pos ) ;
}
// string_view::find_first_not_of()
//
// Finds the first occurrence of any of the characters not in `s` within the
@ -507,18 +555,43 @@ class string_view {
// that is not `c` within the `string_view`.
size_type find_first_not_of ( char c , size_type pos = 0 ) const noexcept ;
// Overload of `string_view::find_first_not_of()` for finding a substring of a
// different C-style string `s` within the `string_view`.
size_type find_first_not_of ( const char * s , size_type pos ,
size_type count ) const {
return find_first_not_of ( string_view ( s , count ) , pos ) ;
}
// Overload of `string_view::find_first_not_of()` for finding a different
// C-style string `s` within the `string_view`.
size_type find_first_not_of ( const char * s , size_type pos = 0 ) const {
return find_first_not_of ( string_view ( s ) , pos ) ;
}
// string_view::find_last_not_of()
//
// Finds the last occurrence of any of the characters not in `s` within the
// `string_view`, returning the start position of the last non-match, or
// `npos` if no non-match was found.
size_type find_last_not_of ( string_view s ,
size_type pos = npos ) const noexcept ;
size_type pos = npos ) const noexcept ;
// Overload of `string_view::find_last_not_of()` for finding a character
// that is not `c` within the `string_view`.
size_type find_last_not_of ( char c , size_type pos = npos ) const
noexcept ;
size_type find_last_not_of ( char c , size_type pos = npos ) const noexcept ;
// Overload of `string_view::find_last_not_of()` for finding a substring of a
// different C-style string `s` within the `string_view`.
size_type find_last_not_of ( const char * s , size_type pos ,
size_type count ) const {
return find_last_not_of ( string_view ( s , count ) , pos ) ;
}
// Overload of `string_view::find_last_not_of()` for finding a different
// C-style string `s` within the `string_view`.
size_type find_last_not_of ( const char * s , size_type pos = npos ) const {
return find_last_not_of ( string_view ( s ) , pos ) ;
}
private :
static constexpr size_type kMaxSize =
@ -596,6 +669,7 @@ std::ostream& operator<<(std::ostream& o, string_view piece);
ABSL_NAMESPACE_END
} // namespace absl
# undef ABSL_INTERNAL_STRING_VIEW_CXX14_CONSTEXPR
# undef ABSL_INTERNAL_STRING_VIEW_MEMCMP
# endif // ABSL_USES_STD_STRING_VIEW
Abseil Team
4 years ago
committed by
Dino Radaković