-
-
Notifications
You must be signed in to change notification settings - Fork 303
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Loading branch information
Showing
5 changed files
with
99 additions
and
7 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,88 @@ | ||
/** | ||
* Copyright (c) 2024, Timothy Stack | ||
* | ||
* All rights reserved. | ||
* | ||
* Redistribution and use in source and binary forms, with or without | ||
* modification, are permitted provided that the following conditions are met: | ||
* | ||
* * Redistributions of source code must retain the above copyright notice, this | ||
* list of conditions and the following disclaimer. | ||
* * Redistributions in binary form must reproduce the above copyright notice, | ||
* this list of conditions and the following disclaimer in the documentation | ||
* and/or other materials provided with the distribution. | ||
* * Neither the name of Timothy Stack nor the names of its contributors | ||
* may be used to endorse or promote products derived from this software | ||
* without specific prior written permission. | ||
* | ||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY | ||
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | ||
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | ||
* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY | ||
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | ||
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | ||
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND | ||
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | ||
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | ||
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
*/ | ||
|
||
#ifndef lnav_itertools_enumerate_hh | ||
#define lnav_itertools_enumerate_hh | ||
|
||
#include <tuple> | ||
|
||
namespace lnav::itertools { | ||
|
||
namespace details { | ||
|
||
template<typename Iterator, typename CounterType = size_t> | ||
class EnumerateIterator { | ||
Iterator iter; | ||
CounterType index; | ||
|
||
public: | ||
EnumerateIterator(Iterator iter, CounterType index) | ||
: iter(std::move(iter)), index(index) | ||
{ | ||
} | ||
|
||
EnumerateIterator& operator++() | ||
{ | ||
++iter; | ||
++index; | ||
return *this; | ||
} | ||
|
||
auto operator*() { return std::forward_as_tuple(index, *iter); } | ||
bool operator!=(EnumerateIterator const& rhs) const | ||
{ | ||
return iter != rhs.iter; | ||
} | ||
}; | ||
|
||
} // namespace details | ||
|
||
template<typename Iterable, typename CounterType = size_t> | ||
class enumerate { | ||
public: | ||
enumerate(Iterable& iterable, CounterType start = 0) | ||
: iterable(iterable), index(start) | ||
{ | ||
} | ||
|
||
auto begin() | ||
{ | ||
return details::EnumerateIterator{std::begin(iterable), index}; | ||
} | ||
|
||
auto end() { return details::EnumerateIterator{std::end(iterable), index}; } | ||
|
||
private: | ||
Iterable& iterable; | ||
CounterType index; | ||
}; | ||
|
||
} // namespace lnav::itertools | ||
|
||
#endif |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters