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jotux revised this gist
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This file contains hidden or 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 charactersOriginal file line number Diff line number Diff line change @@ -65,8 +65,7 @@ class Register { uint32_t old = reinterpret_cast<uint32_t&>(data); memcpy(data,&val,4); if (old != val) { dirty = true; } @@ -94,7 +93,7 @@ int main() PrintData(); sample[1]++; PrintData(); sample[0] += (uint8_t)5; PrintData(); sample.dirty = false; PrintData(); -
jotux revised this gist
Nov 21, 2018 . 1 changed file with 64 additions and 27 deletions.There are no files selected for viewing
This file contains hidden or 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 charactersOriginal file line number Diff line number Diff line change @@ -1,68 +1,105 @@ #include <iostream> #include <stdio.h> #include <string.h> #include <stdint.h> using namespace std; template<uint8_t N> class Register { private: uint8_t data[N]; class Proxy { private: Register<N>& parent; uint8_t index; public: Proxy(Register<N>& p, uint8_t i) : parent(p), index(i){} void operator=(uint8_t val) { if (val != parent.data[index]) { parent.dirty = true; } parent.data[index] = val; } operator uint8_t&() { return parent.data[index]; } uint8_t operator++(int) { parent.data[index]++; parent.dirty = true; return parent.data[index]; } uint8_t operator--(int) { parent.data[index]--; parent.dirty = true; return parent.data[index]; } uint8_t operator+=(uint8_t val) { parent.data[index] += val; parent.dirty = true; return parent.data[index]; } }; public: bool dirty; Register<N>() { memset(data,0,N); dirty = false; } Proxy operator[](uint8_t index) { return Proxy(*this,index); } void operator=(uint32_t val) { if (N == 4) { uint32_t old = reinterpret_cast<uint32_t&>(data); memcpy(data,&val,4); uint32_t current = reinterpret_cast<uint32_t&>(data); if (old != current) { dirty = true; } } } operator uint32_t&() { return reinterpret_cast<uint32_t&>(data); } }; const uint8_t size = 4; Register<size> sample; void PrintData() { printf("Data\n----\n"); for (int i = 0;i < size;i++){printf("%d%s\n",(uint8_t)sample[i],sample.dirty?"~":"");} } int main() { PrintData(); sample[1] = 0; PrintData(); sample[1]++; PrintData(); sample[0] += 5; PrintData(); sample.dirty = false; PrintData(); sample = 0x04030201; PrintData(); uint32_t foo = (uint32_t)sample; printf("Foo: 0x%x\n",foo); } -
jotux created this gist
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This file contains hidden or 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 charactersOriginal file line number Diff line number Diff line change @@ -0,0 +1,68 @@ #include <iostream> #include <stdio.h> #include <string.h> using namespace std; template<int N> class X { private: int data[N]; class Proxy { private: X<N>& parent; int index; public: Proxy(X<N>& p, int x) : parent(p), index(x){} void operator=(int i) { if (i != parent.data[index]) { parent.dirty = true; } parent.data[index] = i; } operator int const &() { return parent.data[index]; } int operator++(int) { parent.data[index]++; parent.dirty = true; return parent.data[index]; } }; public: bool dirty; X<N>() { memset(data,0,N*sizeof(int)); dirty = false; } Proxy operator[](int index) { return Proxy(*this,index); } }; int main() { X<3> sample; for (int i = 0;i < 3;i++) { printf("%d %d\n",(int)sample[i],sample.dirty); } sample[1] = 0; for (int i = 0;i < 3;i++) { printf("%d %d\n",(int)sample[i],sample.dirty); } sample[1]++; for (int i = 0;i < 3;i++) { printf("%d %d\n",(int)sample[i],sample.dirty); } }