From 7428fa7e597ed11db791ab96bc3c03bda178ed5c Mon Sep 17 00:00:00 2001
From: Brett <brettmaster1@gmail.com>
Date: Mon, 3 Jun 2024 02:29:51 -0400
Subject: [PATCH] gwfsdf

---
 CMakeLists.txt           |   6 +-
 examples/main.cpp        |  15 +++++
 include/blt/gp/program.h | 142 ++++++++++++++++++++++++++++++++++-----
 lib/blt                  |   2 +-
 4 files changed, 143 insertions(+), 22 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 255cb20..e09c673 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,5 +1,5 @@
 cmake_minimum_required(VERSION 3.25)
-project(blt-gp VERSION 0.0.5)
+project(blt-gp VERSION 0.0.6)
 
 option(ENABLE_ADDRSAN "Enable the address sanitizer" OFF)
 option(ENABLE_UBSAN "Enable the ub sanitizer" OFF)
@@ -42,8 +42,8 @@ if (${BUILD_EXAMPLES})
 
     target_link_libraries(blt-gp-example PUBLIC BLT blt-gp)
 
-    target_compile_options(blt-gp-example PRIVATE -Wall -Wextra -Werror -Wpedantic -Wno-comment)
-    target_link_options(blt-gp-example PRIVATE -Wall -Wextra -Werror -Wpedantic -Wno-comment)
+    target_compile_options(blt-gp-example PRIVATE -Wall -Wextra -Wpedantic -Wno-comment)
+    target_link_options(blt-gp-example PRIVATE -Wall -Wextra -Wpedantic -Wno-comment)
 
     if (${ENABLE_ADDRSAN} MATCHES ON)
         target_compile_options(blt-gp-example PRIVATE -fsanitize=address)
diff --git a/examples/main.cpp b/examples/main.cpp
index 639b0dd..56da706 100644
--- a/examples/main.cpp
+++ b/examples/main.cpp
@@ -16,8 +16,23 @@
  *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 #include <iostream>
+#include <blt/gp/program.h>
 
 int main()
 {
+    blt::gp::operation<float, float, int, bool> silly([](float f, int i, bool b) -> float {
+        return static_cast<float>(b);
+    });
+    
+    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;
+    
     std::cout << "Hello World!" << std::endl;
 }
\ No newline at end of file
diff --git a/include/blt/gp/program.h b/include/blt/gp/program.h
index de1b584..9d98755 100644
--- a/include/blt/gp/program.h
+++ b/include/blt/gp/program.h
@@ -22,7 +22,12 @@
 #include <blt/gp/fwdecl.h>
 #include <functional>
 #include <blt/std/ranges.h>
+#include <blt/std/types.h>
+#include <blt/std/utility.h>
 #include <type_traits>
+#include <string_view>
+#include <string>
+#include <utility>
 
 namespace blt::gp
 {
@@ -30,6 +35,95 @@ namespace blt::gp
     {
     };
     
+    class type
+    {
+        public:
+            template<typename T>
+            static type make_type(blt::size_t id)
+            {
+                return type(sizeof(T), id, blt::type_string<T>());
+            }
+            
+            [[nodiscard]] blt::size_t size() const
+            {
+                return size_;
+            }
+            
+            [[nodiscard]] blt::size_t id() const
+            {
+                return id_;
+            }
+            
+            [[nodiscard]] std::string_view name() const
+            {
+                return name_;
+            }
+        
+        private:
+            type(size_t size, size_t id, std::string_view name): size_(size), id_(id), name_(name)
+            {}
+            
+            blt::size_t size_;
+            blt::size_t id_;
+            std::string name_;
+    };
+    
+    class type_system
+    {
+        public:
+            type_system() = default;
+            
+            template<typename T>
+            inline type register_type()
+            {
+                types.push_back(type::make_type<T>(types.size()));
+                return types.back();
+            }
+        
+        private:
+            std::vector<type> types;
+    };
+    
+    class stack_allocator
+    {
+            constexpr static blt::size_t BLOCK_SIZE = 4096;
+        public:
+        
+        private:
+            template<typename T>
+            static inline auto to_block(T* p)
+            {
+                return reinterpret_cast<block*>(reinterpret_cast<std::uintptr_t>(p) & static_cast<std::uintptr_t>(~(BLOCK_SIZE - 1)));
+            }
+            
+            struct block
+            {
+                struct block_metadata_t
+                {
+                    block* next = nullptr;
+                    block* prev = nullptr;
+                    blt::u8* offset = nullptr;
+                } metadata;
+                blt::u8 buffer[BLOCK_SIZE - sizeof(block_metadata_t)]{};
+                
+                block()
+                {
+                    metadata.offset = buffer;
+                }
+                
+                // remaining space inside the block after accounting for the metadata
+                static constexpr blt::size_t BLOCK_REMAINDER = BLOCK_SIZE - sizeof(typename block::block_metadata_t);
+            };
+            
+            static block* allocate_block()
+            {
+                return reinterpret_cast<block*>(std::aligned_alloc(BLOCK_SIZE, BLOCK_SIZE));
+            }
+        
+        private:
+            block* head = nullptr;
+    };
+    
     template<typename Return, typename... Args>
     class operation
     {
@@ -40,18 +134,16 @@ namespace blt::gp
             
             operation(operation&& move) = default;
             
-            template<typename T>
+            template<typename T, std::enable_if_t<std::is_same_v<T, function_t>, void>>
+            explicit operation(const T& functor): func(functor)
+            {}
+            
+            template<typename T, std::enable_if_t<!std::is_same_v<T, function_t>, void>>
             explicit operation(const T& functor)
             {
-                if constexpr (std::is_same_v<T, function_t>)
-                {
-                    func = functor;
-                } else
-                {
-                    func = [&functor](Args... args) {
-                        return functor(args...);
-                    };
-                }
+                func = [&functor](Args... args) {
+                    return functor(args...);
+                };
             }
             
             explicit operation(function_t&& functor): func(std::move(functor))
@@ -62,21 +154,35 @@ namespace blt::gp
                 return func(args...);
             }
             
-            inline Return operator()(blt::span<void*> args)
+            Return operator()(blt::span<void*> args)
             {
-                
+                auto pack_sequence = std::make_integer_sequence<blt::u64, sizeof...(Args)>();
+                return function_evaluator(args, pack_sequence);
+            }
+            
+            std::function<Return(blt::span<void*>)> to_functor()
+            {
+                return [this](blt::span<void*> args) {
+                    return this->operator()(args);
+                };
             }
         
         private:
+            template<typename T, blt::size_t index>
+            static inline T& access_pack_index(blt::span<void*> args)
+            {
+                return *reinterpret_cast<T*>(args[index]);
+            }
+            
+            template<typename T, T... indexes>
+            Return function_evaluator(blt::span<void*> args, std::integer_sequence<T, indexes...>)
+            {
+                return func(access_pack_index<Args, indexes>(args)...);
+            }
+            
             function_t func;
     };
     
-    template<typename Return, typename Args>
-    class operations
-    {
-    
-    };
-    
     
 }
 
diff --git a/lib/blt b/lib/blt
index a8b2bc2..bc68e6d 160000
--- a/lib/blt
+++ b/lib/blt
@@ -1 +1 @@
-Subproject commit a8b2bc2d010480544c3162daa7384a252946bda1
+Subproject commit bc68e6dd4a3dfa1de9be2fb8e9302b52c4f3db5c