Introduce src/reverse_iterator.hpp and include it...

...where it will be needed

Taken from https://gist.github.com/arvidsson/7231973 with small
modifications to fit the bitcoin core project
This commit is contained in:
Jorge Timón 2017-04-13 00:24:40 +02:00
parent 1ad3d4e126
commit 300851ec16
No known key found for this signature in database
GPG key ID: A4F5D141C01A0387
7 changed files with 45 additions and 0 deletions

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@ -124,6 +124,7 @@ BITCOIN_CORE_H = \
pow.h \
protocol.h \
random.h \
reverse_iterator.h \
reverselock.h \
rpc/blockchain.h \
rpc/client.h \

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@ -6,6 +6,7 @@
#include "chain.h"
#include "chainparams.h"
#include "reverse_iterator.h"
#include "validation.h"
#include "uint256.h"

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@ -22,6 +22,7 @@
#include "primitives/block.h"
#include "primitives/transaction.h"
#include "random.h"
#include "reverse_iterator.h"
#include "tinyformat.h"
#include "txmempool.h"
#include "ui_interface.h"

39
src/reverse_iterator.h Normal file
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@ -0,0 +1,39 @@
// Taken from https://gist.github.com/arvidsson/7231973
#ifndef BITCOIN_REVERSE_ITERATOR_HPP
#define BITCOIN_REVERSE_ITERATOR_HPP
/**
* Template used for reverse iteration in C++11 range-based for loops.
*
* std::vector<int> v = {1, 2, 3, 4, 5};
* for (auto x : reverse_iterate(v))
* std::cout << x << " ";
*/
template <typename T>
class reverse_range
{
T &x;
public:
reverse_range(T &x) : x(x) {}
auto begin() const -> decltype(this->x.rbegin())
{
return x.rbegin();
}
auto end() const -> decltype(this->x.rend())
{
return x.rend();
}
};
template <typename T>
reverse_range<T> reverse_iterate(T &x)
{
return reverse_range<T>(x);
}
#endif // BITCOIN_REVERSE_ITERATOR_HPP

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@ -5,6 +5,7 @@
#include <vector>
#include "prevector.h"
#include "reverse_iterator.h"
#include "serialize.h"
#include "streams.h"

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@ -11,6 +11,7 @@
#include "validation.h"
#include "policy/policy.h"
#include "policy/fees.h"
#include "reverse_iterator.h"
#include "streams.h"
#include "timedata.h"
#include "util.h"

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@ -23,6 +23,7 @@
#include "primitives/block.h"
#include "primitives/transaction.h"
#include "random.h"
#include "reverse_iterator.h"
#include "script/script.h"
#include "script/sigcache.h"
#include "script/standard.h"