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Added string_view::contains methods.

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These methods were added in C++23.

Also updated string_view/ref tests:

- Added tests for string_view::contains.
- Added missing includes.
- Added missing std:: qualification.
- Removed tabs.
- Fixed misleading indentation (fixes gcc warnings).
- Fixed decrementing pointer before beginning of the string.

Closes https://github.com/boostorg/utility/issues/93.
This commit is contained in:
Andrey Semashev
2022-05-03 01:26:18 +03:00
parent 0106ffda5f
commit c63d36cf5b
6 changed files with 99 additions and 53 deletions
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26
test/string_ref_test2.cpp
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@ -7,8 +7,11 @@
For more information, see http://www.boost.org
*/
#include <cstddef>
#include <iostream>
#include <cstring> // for std::strchr
#include <string>
#include <algorithm>
#include <boost/utility/string_ref.hpp>
@ -17,7 +20,7 @@
typedef boost::string_ref string_ref;
void ends_with ( const char *arg ) {
const size_t sz = std::strlen ( arg );
const std::size_t sz = std::strlen ( arg );
string_ref sr ( arg );
string_ref sr2 ( arg );
const char *p = arg;
@ -41,20 +44,19 @@ void ends_with ( const char *arg ) {
char ch = sz == 0 ? '\0' : arg [ sz - 1 ];
sr2 = arg;
if ( sz > 0 )
BOOST_TEST ( sr2.ends_with ( ch ));
BOOST_TEST ( sr2.ends_with ( ch ));
BOOST_TEST ( !sr2.ends_with ( ++ch ));
BOOST_TEST ( sr2.ends_with ( string_ref ()));
}
void starts_with ( const char *arg ) {
const size_t sz = std::strlen ( arg );
const std::size_t sz = std::strlen ( arg );
string_ref sr ( arg );
string_ref sr2 ( arg );
const char *p = arg + std::strlen ( arg ) - 1;
while ( p >= arg ) {
std::string foo ( arg, p + 1 );
std::string foo ( arg );
while ( !foo.empty ()) {
BOOST_TEST ( sr.starts_with ( foo ));
--p;
foo.erase ( foo.end () - 1 );
}
while ( !sr2.empty ()) {
@ -64,8 +66,8 @@ void starts_with ( const char *arg ) {
char ch = *arg;
sr2 = arg;
if ( sz > 0 )
BOOST_TEST ( sr2.starts_with ( ch ));
if ( sz > 0 )
BOOST_TEST ( sr2.starts_with ( ch ));
BOOST_TEST ( !sr2.starts_with ( ++ch ));
BOOST_TEST ( sr2.starts_with ( string_ref ()));
}
@ -93,7 +95,7 @@ void find ( const char *arg ) {
string_ref sr2;
const char *p;
// When we search for the empty string, we find it at position 0
// When we search for the empty string, we find it at position 0
BOOST_TEST ( sr1.find (sr2) == 0 );
BOOST_TEST ( sr1.rfind(sr2) == 0 );
@ -207,7 +209,7 @@ void find ( const char *arg ) {
string_ref::size_type pos2 = sr1.find_first_not_of(*p);
BOOST_TEST ( pos1 != string_ref::npos && pos1 < sr1.size () && pos1 <= ptr_diff ( p, arg ));
if ( pos2 != string_ref::npos ) {
for ( size_t i = 0 ; i < pos2; ++i )
for ( std::size_t i = 0 ; i < pos2; ++i )
BOOST_TEST ( sr1[i] == *p );
BOOST_TEST ( sr1 [ pos2 ] != *p );
}
@ -233,7 +235,7 @@ void find ( const char *arg ) {
BOOST_TEST ( pos1 != string_ref::npos && pos1 < sr1.size () && pos1 >= ptr_diff ( p, arg ));
BOOST_TEST ( pos2 == string_ref::npos || pos1 < sr1.size ());
if ( pos2 != string_ref::npos ) {
for ( size_t i = sr1.size () -1 ; i > pos2; --i )
for ( std::size_t i = sr1.size () -1 ; i > pos2; --i )
BOOST_TEST ( sr1[i] == *p );
BOOST_TEST ( sr1 [ pos2 ] != *p );
}