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improve nf7::GenericMemento

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This commit is contained in:
falsycat
2022-08-26 22:57:00 +09:00
parent c578721277
commit bc3143016c
12 changed files with 32 additions and 46 deletions
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13
common/generic_memento.hh
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@@ -5,6 +5,8 @@
#include <unordered_map>
#include <utility>
#include "nf7.hh"
#include "common/memento.hh"
@@ -15,7 +17,11 @@ class GenericMemento : public nf7::Memento {
public:
class CustomTag;
GenericMemento(T&& data) noexcept : initial_(T(data)), data_(std::move(data)) {
GenericMemento(T&& data, nf7::File* f = nullptr) noexcept :
file_(f), initial_(T(data)), data_(std::move(data)) {
}
GenericMemento(T&& data, nf7::File& f) noexcept :
GenericMemento(std::move(data), &f) {
}
~GenericMemento() noexcept {
tag_ = nullptr;
@@ -37,10 +43,12 @@ class GenericMemento : public nf7::Memento {
tag_ = tag;
last_ = tag;
onRestore();
if (file_) file_->Touch();
}
void Commit() noexcept {
tag_ = nullptr;
onCommit();
if (file_) file_->Touch();
}
void CommitAmend() noexcept {
if (!tag_) return;
@@ -48,6 +56,7 @@ class GenericMemento : public nf7::Memento {
assert(itr != map_.end());
itr->second = data_;
onCommit();
if (file_) file_->Touch();
}
T& data() noexcept { return data_; }
@@ -65,6 +74,8 @@ class GenericMemento : public nf7::Memento {
std::function<void()> onCommit = [](){};
private:
nf7::File* const file_;
const T initial_;
T data_;