bsnes/nall/vector.hpp

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#ifndef NALL_VECTOR_HPP
#define NALL_VECTOR_HPP
#include <algorithm>
#include <initializer_list>
#include <new>
#include <utility>
#include <nall/algorithm.hpp>
#include <nall/bit.hpp>
#include <nall/maybe.hpp>
#include <nall/memory.hpp>
#include <nall/sort.hpp>
#include <nall/utility.hpp>
namespace nall {
template<typename T> struct vector {
struct exception_out_of_bounds{};
explicit operator bool() const { return objectsize; }
auto data() -> T* { return pool + poolbase; }
auto data() const -> const T* { return pool + poolbase; }
auto empty() const -> bool { return objectsize == 0; }
auto size() const -> unsigned { return objectsize; }
auto capacity() const -> unsigned { return poolsize; }
auto release() -> T* {
T* result = pool + poolbase;
pool = nullptr;
poolbase = 0;
poolsize = 0;
objectsize = 0;
return result;
}
auto reset() -> void {
if(pool) {
for(unsigned n = 0; n < objectsize; n++) pool[poolbase + n].~T();
memory::free(pool);
}
pool = nullptr;
poolbase = 0;
poolsize = 0;
objectsize = 0;
}
auto reserve(unsigned size) -> void {
if(size <= poolsize) return;
size = bit::round(size); //amortize growth
T* copy = (T*)memory::allocate(size * sizeof(T));
for(unsigned n = 0; n < objectsize; n++) new(copy + n) T(move(pool[poolbase + n]));
free(pool);
pool = copy;
poolbase = 0;
poolsize = size;
}
auto resize(unsigned size, T value = T()) -> void {
T* copy = (T*)memory::allocate(size * sizeof(T));
for(unsigned n = 0; n < size && n < objectsize; n++) new(copy + n) T(move(pool[poolbase + n]));
for(unsigned n = objectsize; n < size; n++) new(copy + n) T(value);
reset();
pool = copy;
poolbase = 0;
poolsize = size;
objectsize = size;
}
auto reallocate(unsigned size, T value = T()) -> void {
reset();
resize(size, value);
}
template<typename... Args> auto prepend(const T& data, Args&&... args) -> void {
prepend(forward<Args>(args)...);
prepend(data);
}
auto prepend(const T& data) -> T& {
reserve(objectsize + 1);
if(poolbase == 0) {
unsigned available = poolsize - objectsize;
poolbase = max(1u, available >> 1);
for(signed n = objectsize - 1; n >= 0; n--) {
pool[poolbase + n] = move(pool[n]);
}
}
new(pool + --poolbase) T(data);
objectsize++;
return first();
}
template<typename... Args> auto append(const T& data, Args&&... args) -> void {
append(data);
append(forward<Args>(args)...);
}
auto append(const T& data) -> T& {
reserve(poolbase + objectsize + 1);
new(pool + poolbase + objectsize++) T(data);
return last();
}
auto appendOnce(const T& data) -> bool {
if(find(data)) return false;
return append(data), true;
}
auto insert(unsigned position, const T& data) -> void {
Update to v094r09 release. byuu says: This will easily be the biggest diff in the history of higan. And not in a good way. * target-higan and target-loki have been blown away completely * nall and ruby massively updated * phoenix replaced with hiro (pretty near a total rewrite) * target-higan restarted using hiro (just a window for now) * all emulation cores updated to compile again * installation changed to not require root privileges (installs locally) For the foreseeable future (maybe even permanently?), the new higan UI will only build under Linux/BSD with GTK+ 2.20+. Probably the most likely route for Windows/OS X will be to try and figure out how to build hiro/GTK on those platforms, as awful as that would be. The other alternative would be to produce new UIs for those platforms ... which would actually be a good opportunity to make something much more user friendly. Being that I just started on this a few hours ago, that means that for at least a few weeks, don't expect to be able to actually play any games. Right now, you can pretty much just compile the binary and that's it. It's quite possible that some nall changes didn't produce compilation errors, but will produce runtime errors. So until the UI can actually load games, we won't know if anything is broken. But we should mostly be okay. It was mostly just trim<1> -> trim changes, moving to Hash::SHA256 (much cleaner), and patching some reckless memory copy functions enough to compile. Progress isn't going to be like it was before: I'm now dividing my time much thinner between studying and other hobbies. My aim this time is not to produce a binary for everyone to play games on. Rather, it's to keep the emulator alive. I want to be able to apply critical patches again. And I would also like the base of the emulator to live on, for use in other emulator frontends that utilize higan.
2015-02-26 10:10:46 +00:00
if(position == 0) {
prepend(data);
return;
}
append(data);
if(position == ~0u) return;
for(signed n = objectsize - 1; n > position; n--) {
pool[poolbase + n] = move(pool[poolbase + n - 1]);
}
pool[poolbase + position] = data;
}
auto remove(unsigned position = ~0u, unsigned length = 1) -> void {
if(position == ~0u) position = objectsize - 1;
if(position + length > objectsize) throw exception_out_of_bounds{};
if(position == 0) {
for(unsigned n = 0; n < length; n++) pool[poolbase + n].~T();
poolbase += length;
} else {
for(unsigned n = position; n < objectsize; n++) {
if(n + length < objectsize) {
pool[poolbase + n] = move(pool[poolbase + n + length]);
} else {
pool[poolbase + n].~T();
}
}
}
objectsize -= length;
}
auto removeFirst() -> void { return remove(0); }
auto removeLast() -> void { return remove(~0u); }
auto take(unsigned position = ~0u) -> T {
if(position == ~0u) position = objectsize - 1;
T object = pool[poolbase + position];
remove(position);
return object;
}
auto takeFirst() -> T { return take(0); }
auto takeLast() -> T { return take(~0u); }
auto reverse() -> void {
unsigned pivot = size() / 2;
for(unsigned l = 0, r = size() - 1; l < pivot; l++, r--) {
swap(pool[poolbase + l], pool[poolbase + r]);
}
}
auto sort(const function<bool (const T& lhs, const T& rhs)>& comparator = [](const T& lhs, const T& rhs) -> bool {
return lhs < rhs;
}) -> void {
nall::sort(pool + poolbase, objectsize, comparator);
}
auto find(const T& data) const -> maybe<unsigned> {
for(unsigned n = 0; n < objectsize; n++) if(pool[poolbase + n] == data) return n;
return nothing;
}
auto first() -> T& {
if(objectsize == 0) throw exception_out_of_bounds();
return pool[poolbase];
}
auto first() const -> const T& {
if(objectsize == 0) throw exception_out_of_bounds();
return pool[poolbase];
}
auto last() -> T& {
if(objectsize == 0) throw exception_out_of_bounds();
return pool[poolbase + objectsize - 1];
}
auto last() const -> const T& {
if(objectsize == 0) throw exception_out_of_bounds();
return pool[poolbase + objectsize - 1];
}
//access
inline auto operator[](unsigned position) -> T& {
if(position >= objectsize) throw exception_out_of_bounds();
return pool[poolbase + position];
}
inline auto operator[](unsigned position) const -> const T& {
if(position >= objectsize) throw exception_out_of_bounds();
return pool[poolbase + position];
}
inline auto operator()(unsigned position) -> T& {
if(position >= poolsize) reserve(position + 1);
while(position >= objectsize) append(T());
return pool[poolbase + position];
}
inline auto operator()(unsigned position, const T& data) const -> const T& {
if(position >= objectsize) return data;
return pool[poolbase + position];
}
//iteration
struct iterator {
iterator(vector& source, unsigned position) : source(source), position(position) {}
auto operator*() -> T& { return source.operator[](position); }
auto operator!=(const iterator& source) const -> bool { return position != source.position; }
auto operator++() -> iterator& { position++; return *this; }
private:
vector& source;
unsigned position;
};
auto begin() -> iterator { return iterator(*this, 0); }
auto end() -> iterator { return iterator(*this, size()); }
struct constIterator {
constIterator(const vector& source, unsigned position) : source(source), position(position) {}
auto operator*() const -> const T& { return source.operator[](position); }
auto operator!=(const constIterator& source) const -> bool { return position != source.position; }
auto operator++() -> constIterator& { position++; return *this; }
private:
const vector& source;
unsigned position;
};
auto begin() const -> const constIterator { return constIterator(*this, 0); }
auto end() const -> const constIterator { return constIterator(*this, size()); }
//copy
inline auto operator=(const vector& source) -> vector& {
Update to v094r09 release. byuu says: This will easily be the biggest diff in the history of higan. And not in a good way. * target-higan and target-loki have been blown away completely * nall and ruby massively updated * phoenix replaced with hiro (pretty near a total rewrite) * target-higan restarted using hiro (just a window for now) * all emulation cores updated to compile again * installation changed to not require root privileges (installs locally) For the foreseeable future (maybe even permanently?), the new higan UI will only build under Linux/BSD with GTK+ 2.20+. Probably the most likely route for Windows/OS X will be to try and figure out how to build hiro/GTK on those platforms, as awful as that would be. The other alternative would be to produce new UIs for those platforms ... which would actually be a good opportunity to make something much more user friendly. Being that I just started on this a few hours ago, that means that for at least a few weeks, don't expect to be able to actually play any games. Right now, you can pretty much just compile the binary and that's it. It's quite possible that some nall changes didn't produce compilation errors, but will produce runtime errors. So until the UI can actually load games, we won't know if anything is broken. But we should mostly be okay. It was mostly just trim<1> -> trim changes, moving to Hash::SHA256 (much cleaner), and patching some reckless memory copy functions enough to compile. Progress isn't going to be like it was before: I'm now dividing my time much thinner between studying and other hobbies. My aim this time is not to produce a binary for everyone to play games on. Rather, it's to keep the emulator alive. I want to be able to apply critical patches again. And I would also like the base of the emulator to live on, for use in other emulator frontends that utilize higan.
2015-02-26 10:10:46 +00:00
if(this == &source) return *this;
reset();
reserve(source.size());
for(auto& data : source) append(data);
return *this;
}
//move
inline auto operator=(vector&& source) -> vector& {
Update to v094r09 release. byuu says: This will easily be the biggest diff in the history of higan. And not in a good way. * target-higan and target-loki have been blown away completely * nall and ruby massively updated * phoenix replaced with hiro (pretty near a total rewrite) * target-higan restarted using hiro (just a window for now) * all emulation cores updated to compile again * installation changed to not require root privileges (installs locally) For the foreseeable future (maybe even permanently?), the new higan UI will only build under Linux/BSD with GTK+ 2.20+. Probably the most likely route for Windows/OS X will be to try and figure out how to build hiro/GTK on those platforms, as awful as that would be. The other alternative would be to produce new UIs for those platforms ... which would actually be a good opportunity to make something much more user friendly. Being that I just started on this a few hours ago, that means that for at least a few weeks, don't expect to be able to actually play any games. Right now, you can pretty much just compile the binary and that's it. It's quite possible that some nall changes didn't produce compilation errors, but will produce runtime errors. So until the UI can actually load games, we won't know if anything is broken. But we should mostly be okay. It was mostly just trim<1> -> trim changes, moving to Hash::SHA256 (much cleaner), and patching some reckless memory copy functions enough to compile. Progress isn't going to be like it was before: I'm now dividing my time much thinner between studying and other hobbies. My aim this time is not to produce a binary for everyone to play games on. Rather, it's to keep the emulator alive. I want to be able to apply critical patches again. And I would also like the base of the emulator to live on, for use in other emulator frontends that utilize higan.
2015-02-26 10:10:46 +00:00
if(this == &source) return *this;
reset();
pool = source.pool;
poolbase = source.poolbase;
poolsize = source.poolsize;
objectsize = source.objectsize;
source.pool = nullptr;
source.poolbase = 0;
source.poolsize = 0;
source.objectsize = 0;
return *this;
}
//construction and destruction
vector() = default;
vector(initializer_list<T> list) { for(auto& data : list) append(data); }
vector(const vector& source) { operator=(source); }
vector(vector&& source) { operator=(move(source)); }
~vector() { reset(); }
protected:
T* pool = nullptr;
unsigned poolbase = 0;
unsigned poolsize = 0;
unsigned objectsize = 0;
};
}
#endif