blt-gp/examples/main.cpp

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/*
* <Short Description>
* Copyright (C) 2024 Brett Terpstra
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include <iostream>
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#include <blt/gp/program.h>
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#include <variant>
#include <stack>
#include <deque>
#include <vector>
#include <random>
// small scale
enum class op
{
ADD,
SUB,
MUL,
DIV,
LIT
};
std::string to_string(op o)
{
switch (o)
{
case op::ADD:
return "ADD";
case op::SUB:
return "SUB";
case op::MUL:
return "MUL";
case op::DIV:
return "DIV";
case op::LIT:
return "LIT";
}
return "";
}
constexpr static long SEED = 41912;
op generate_op()
{
static std::mt19937_64 engine(SEED);
static std::uniform_int_distribution dist(0, static_cast<int>(op::LIT) - 1);
return static_cast<op>(dist(engine));
}
bool choice()
{
static std::mt19937_64 engine(SEED);
static std::uniform_int_distribution dist(0, 1);
return dist(engine);
}
float random_value()
{
static std::mt19937_64 engine(SEED);
static std::uniform_real_distribution dist(0.0f, 10.0f);
return dist(engine);
}
void test()
{
std::vector<op> operations;
std::vector<float> values;
std::stack<op> tree_generator;
tree_generator.push(generate_op());
while (!tree_generator.empty())
{
auto opn = tree_generator.top();
tree_generator.pop();
operations.push_back(opn);
if (opn == op::LIT)
{
values.push_back(random_value());
continue;
}
// child 1
if (choice())
tree_generator.push(generate_op());
else
tree_generator.push(op::LIT);
// child 2
if (choice())
tree_generator.push(generate_op());
else
tree_generator.push(op::LIT);
}
for (const auto& v : operations)
std::cout << to_string(v) << " ";
std::cout << std::endl;
{
std::stack<blt::size_t> process;
for (const auto& v : operations)
{
switch (v)
{
case op::ADD:
case op::SUB:
case op::MUL:
case op::DIV:
process.emplace(2);
std::cout << "(";
break;
case op::LIT:
break;
}
std::cout << to_string(v);
while (!process.empty())
{
auto top = process.top();
process.pop();
if (top == 0)
{
std::cout << ")";
continue;
} else
{
std::cout << " ";
process.push(top - 1);
break;
}
}
}
while (!process.empty())
{
auto top = process.top();
process.pop();
if (top == 0)
{
std::cout << ") ";
continue;
} else
{
std::cerr << "FUCK YOU\n";
break;
}
}
std::cout << std::endl;
}
for (const auto& v : values)
std::cout << v << " ";
std::cout << std::endl;
{
std::stack<blt::size_t> process;
blt::size_t index = 0;
for (const auto& v : operations)
{
switch (v)
{
case op::ADD:
case op::SUB:
case op::MUL:
case op::DIV:
process.emplace(2);
std::cout << "(";
std::cout << to_string(v);
break;
case op::LIT:
std::cout << values[index++];
break;
}
while (!process.empty())
{
auto top = process.top();
process.pop();
if (top == 0)
{
std::cout << ")";
continue;
} else
{
std::cout << " ";
process.push(top - 1);
break;
}
}
}
while (!process.empty())
{
auto top = process.top();
process.pop();
if (top == 0)
{
std::cout << ") ";
continue;
} else
{
std::cerr << "FUCK YOU\n";
break;
}
}
std::cout << std::endl;
}
std::stack<float> process;
std::stack<op> operators;
for (const auto& v : operations)
operators.push(v);
while (!operators.empty())
{
auto oper = operators.top();
operators.pop();
if (oper == op::LIT)
{
process.push(values.back());
values.pop_back();
} else
{
auto v1 = process.top();
process.pop();
auto v2 = process.top();
process.pop();
std::cout << "processing oper " << to_string(oper) << " with values " << v1 << " " << v2 << std::endl;
switch (oper)
{
case op::ADD:
values.push_back(v1 + v2);
operators.push(op::LIT);
break;
case op::SUB:
values.push_back(v1 - v2);
operators.push(op::LIT);
break;
case op::MUL:
values.push_back(v1 * v2);
operators.push(op::LIT);
break;
case op::DIV:
if (v2 == 0)
v2 = 1;
values.push_back(v1 / v2);
operators.push(op::LIT);
break;
case op::LIT:
break;
}
std::cout << "\tresult: " << values.back() << std::endl;
}
}
std::cout << process.size() << std::endl;
std::cout << process.top() << std::endl;
}
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struct silly
{
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long nyah = 50;
int bruh = 10;
friend std::ostream& operator<<(std::ostream& stream, const silly& silly)
{
stream << "[" << silly.nyah << " " << silly.bruh << "]";
return stream;
}
};
struct large
{
unsigned char data[2048];
};
struct super_large
{
unsigned char data[9582];
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};
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blt::gp::stack_allocator alloc;
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int main()
{
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test();
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std::cout << alignof(silly) << " " << sizeof(silly) << std::endl;
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std::cout << alignof(super_large) << " " << sizeof(super_large) << std::endl;
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std::cout << alignof(void*) << " " << sizeof(void*) << std::endl;
std::cout << blt::type_string<decltype(&"SillString")>() << std::endl;
alloc.push(50);
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alloc.push(550.3f);
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alloc.push(20.1230345);
alloc.push(std::string("SillyString"));
alloc.push(&"SillyString");
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std::cout << std::endl;
std::cout << *alloc.pop<decltype(&"SillString")>() << std::endl;
std::cout << alloc.pop<std::string>() << std::endl;
std::cout << alloc.pop<double>() << std::endl;
std::cout << alloc.pop<float>() << std::endl;
std::cout << alloc.pop<int>() << std::endl;
std::cout << std::endl;
std::cout << "Is empty? " << alloc.empty() << std::endl << std::endl;
alloc.push(silly{});
alloc.push(large{});
alloc.push(super_large{});
alloc.push(silly{25, 24});
alloc.push(large{});
std::cout << std::endl;
alloc.pop<large>();
std::cout << alloc.pop<silly>() << std::endl;
alloc.pop<super_large>();
alloc.pop<large>();
std::cout << alloc.pop<silly>() << std::endl;
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blt::size_t remaining_bytes = 4096;
//auto* pointer = static_cast<void*>(head->metadata.offset);
//return std::align(alignment, bytes, pointer, remaining_bytes);
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blt::gp::operation<float, float, int, bool> silly([](float f, int i, bool b) -> float {
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return static_cast<float>(f);
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});
float f = 10.5;
int i = 412;
bool b = true;
std::array<void*, 3> arr{reinterpret_cast<void*>(&f), reinterpret_cast<void*>(&i), reinterpret_cast<void*>(&b)};
blt::span<void*, 3> spv{arr};
std::cout << silly.operator()(spv) << std::endl;
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std::cout << "Hello World!" << std::endl;
}