nightly commit + working on NBT

maybe change blt::logging to use something a little faster. base class + virtual function isn't that slow!

CMakeLists.txt

@@ -1,5 +1,5 @@
 cmake_minimum_required(VERSION 3.0)
-project(BLT VERSION 0.6.0)
+project(BLT VERSION 0.6.1)
 
 set(CMAKE_CXX_STANDARD 17)
 

README.md

@@ -1,4 +1,4 @@
-# **BLT v0.6.0a**
+# **BLT v0.6.1a**
 A common utilities library I find useful
 
 ![Icon](icon_large.png)
@@ -26,11 +26,10 @@ If you are using BLT as a CMake library (as you should!) this is done for you.
 - ## Data Structures
   - Queue / Stack 
     - faster than std::queue / std::stack
-  - Binary Tree
-  - Hashmap (TODO)
+    - backed by a contiguous array
 - ## Utility
-  - Simple Random Interface
-    - No more worrying about min/max bounds!
+  - Simple Random Wrapper Interface
+  - Simple random functions based on the PCG Hash
   - ### String Functions
     - starts_with
     - ends_with
@@ -40,14 +39,12 @@ If you are using BLT as a CMake library (as you should!) this is done for you.
     - split
     - trim
   - Logging
-    - Trace / Debug / Info / Warn / Error / Fatal
-    - Log to file
-    - Log to console with color!
-    - Easy to disable for release
-      - define BLT_DISABLE_LOGGING before including the logging.h file.
+    - See blt::logging section above
   - Time
     - Current time in nanoseconds (without all the c++ gobbledygook)
+      - Java's currentTimeMilliseconds
+      - nanoTime as well
+      - `std::chrono::duration_cast<std::chrono::nanoseconds>(std::chrono::high_resolution_clock::now().time_since_epoch()).count()` becomes `blt::system::nanoTime()`
     - Formatted time string with year/month/date + current time
 - ## Profiling
-  - Basic profiler
-    - WIP
+  - Basic profiler with history and formatted output

include/blt/math/math.h

@@ -36,6 +36,26 @@ namespace blt {
         return y;
     }
     
+    
+    static inline constexpr double pow(int b, int p) {
+        int collection = 1;
+        for (int i = 0; i < p; i++)
+            collection *= b;
+        return collection;
+    }
+    
+    /**
+     * This is a fast rounding function and is not guaranteed to be 100% correct
+     * @tparam decimal_places
+     * @param value
+     * @return
+     */
+    template<int decimal_places>
+    static inline double round_up(double value) {
+        constexpr double multiplier = pow(10, decimal_places);
+        return ((int)(value * multiplier) + 1) / multiplier;
+    }
+    
     /*inline std::ostream& operator<<(std::ostream& out, const mat4x4& v) {
         return out << "\rMatrix4x4{" << v.m00() << ", " << v.m01() << ", " << v.m02() << ", " << v.m03() << "} \n"\
  << "         {" << v.m10() << ", " << v.m11() << ", " << v.m12() << ", " << v.m13() << "} \n"\

include/blt/nbt/nbt.h

@@ -7,6 +7,8 @@
 #ifndef BLT_TESTS_NBT_H
 #define BLT_TESTS_NBT_H
 
+#include <utility>
+
 #include "blt/std/format.h"
 #include "blt/std/filesystem.h"
 
@@ -15,26 +17,43 @@ namespace blt::nbt {
     
     std::string readUTF8String(std::fstream& stream);
     
-    enum nbt_type {
-        tag_end = 0,
-        tag_byte = 1,
-        tag_short = 2,
-        tag_int = 3,
-        tag_long = 4,
-        tag_float = 5,
-        tag_double = 6,
-        tag_byte_array = 7,
-        tag_string = 8,
-        tag_list = 9,
-        tag_compound = 10,
-        tag_int_array = 11,
-        tag_long_array = 12
+    enum class nbt_tag : char {
+        END = 0,
+        BYTE = 1,
+        SHORT = 2,
+        INT = 3,
+        LONG = 4,
+        FLOAT = 5,
+        DOUBLE = 6,
+        BYTE_ARRAY = 7,
+        STRING = 8,
+        LIST = 9,
+        COMPOUND = 10,
+        INT_ARRAY = 11,
+        LONG_ARRAY = 12
     };
     
-    class nbt_tag {
+    class tag {
         public:
-            virtual void readTag() = 0;
-            virtual void writeTag() = 0;
+            virtual void writePayload(std::fstream& out) = 0;
+            virtual void readPayload(std::fstream& in) = 0;
+    };
+    
+    class named_tag : public tag {
+        private:
+            std::string name;
+        public:
+            explicit named_tag(std::string name): name(std::move(name)) {}
+            named_tag() = default;
+            void writeName(std::fstream& out);
+            void readName(std::fstream& in);
+    };
+    
+    class tag_end : public tag {
+        public:
+            void writePayload(std::fstream& out) final;
+            // nothing to read
+            void readPayload(std::fstream& in) final {}
     };
     
     class NBTDecoder {
@@ -51,7 +70,6 @@ namespace blt::nbt {
     class NBTReader {
         private:
             std::string m_file;
-        
         public:
             explicit NBTReader(std::string file): m_file(std::move(file)) {}
     };

include/blt/std/format.h

@@ -10,27 +10,9 @@
 #include <string>
 #include <utility>
 #include <vector>
+#include <blt/math/math.h>
 
 namespace blt::string {
-    static inline constexpr double _static_pow(int p) {
-        int collection = 1;
-        for (int i = 0; i < p; i++)
-            collection *= 10;
-        return collection;
-    }
-    
-    /**
-     * This is a fast rounding function and is not guaranteed to be 100% correct
-     * @tparam decimal_places
-     * @param value
-     * @return
-     */
-    template<int decimal_places>
-    static inline double round_up(double value) {
-        constexpr double multiplier = _static_pow(decimal_places);
-        return ((int)(value * multiplier) + 1) / multiplier;
-    }
-    
     
     static inline std::string fromBytes(unsigned long bytes){
         if (bytes > 1073741824) {
@@ -87,8 +69,7 @@ namespace blt::string {
     
     // taken from java, adapted for c++.
     static inline utf8_string createUTFString(const std::string& str) {
-        
-        const unsigned int strlen = (unsigned int) str.size();
+        const auto strlen = (unsigned int) str.size();
         unsigned int utflen = strlen;
         
         for (unsigned int i = 0; i < strlen; i++) {

include/blt/std/memory.h

@@ -58,39 +58,68 @@ namespace blt {
      * Creates an encapsulation of a T array which will be automatically deleted when this object goes out of scope.
      * This is a simple buffer meant to be used only inside of a function and not moved around, with a few minor exceptions.
      * The internal buffer is allocated on the heap.
-     * The operator * has been overloaded to return the internal buffer. (or just use scoped_buffer.buffer if you wish to be explicit)
-     * The operator & was not used because I think it is stupid to do so.
-     * "*" on a reference is fine however since it isn't used to dereference in the case.
+     * The operator * has been overloaded to return the internal buffer.
      * @tparam T type that is stored in buffer eg char
      */
     template<typename T>
     struct scoped_buffer {
-        T* buffer;
-        unsigned long size;
-        
-        explicit scoped_buffer(unsigned long size): size(size) {
-            buffer = new T[size];
-        }
-        
-        scoped_buffer(scoped_buffer& copy) = delete;
-        
-        scoped_buffer(scoped_buffer&& move) = delete;
-        
-        scoped_buffer operator=(scoped_buffer& copyAssignment) = delete;
-        
-        scoped_buffer operator=(scoped_buffer&& moveAssignment) = delete;
-        
-        inline T& operator[](unsigned long index) const {
-            return buffer[index];
-        }
-        
-        inline T* operator*(){
-            return buffer;
-        }
-        
-        ~scoped_buffer() {
-            delete[] buffer;
-        }
+        private:
+            T* _buffer;
+            size_t _size;
+        public:
+            explicit scoped_buffer(size_t size): _size(size) {
+                _buffer = new T[size];
+            }
+            
+            scoped_buffer(const scoped_buffer& copy) = delete;
+            
+            scoped_buffer(scoped_buffer&& move) noexcept {
+                _buffer = move._buffer;
+                _size = move.size();
+                move._buffer = nullptr;
+            }
+            
+            scoped_buffer operator=(scoped_buffer& copyAssignment) = delete;
+            
+            scoped_buffer& operator=(scoped_buffer&& moveAssignment) noexcept {
+                _buffer = moveAssignment._buffer;
+                _size = moveAssignment.size();
+                moveAssignment._buffer = nullptr;
+                
+                return *this;
+            }
+            
+            inline T& operator[](unsigned long index) {
+                return _buffer[index];
+            }
+            
+            inline const T& operator[](unsigned long index) const {
+                return _buffer[index];
+            }
+            
+            inline T* operator*(){
+                return _buffer;
+            }
+            
+            [[nodiscard]] inline size_t size() const {
+                return _size;
+            }
+            
+            inline T* ptr(){
+                return _buffer;
+            }
+            
+            ptr_iterator<T> begin(){
+                return ptr_iterator{_buffer};
+            }
+            
+            ptr_iterator<T> end(){
+                return ptr_iterator{&_buffer[_size]};
+            }
+            
+            ~scoped_buffer() {
+                delete[] _buffer;
+            }
     };
     
     template<typename T>
@@ -168,6 +197,7 @@ namespace blt {
                 delete[] _values;
             }
     };
+    
 }
 
 #endif //BLT_TESTS_MEMORY_H

include/blt/std/time.h

@@ -29,6 +29,14 @@ namespace blt::system {
         return std::chrono::duration_cast<std::chrono::nanoseconds>(std::chrono::high_resolution_clock::now().time_since_epoch()).count();
     }
     
+    static inline auto nanoTime() {
+        return getCurrentTimeNanoseconds();
+    }
+    
+    static inline auto getCurrentTimeMilliseconds(){
+        return std::chrono::duration_cast<std::chrono::milliseconds>(std::chrono::high_resolution_clock::now().time_since_epoch()).count();
+    }
+    
     /**
      * Standard time string is formatted as follows:
      * Year-Month-Date Hour:Min:Second

src/blt/nbt/nbt.cpp

@@ -23,8 +23,20 @@ namespace blt::nbt {
         
         stream.read(str.characters, str.size);
         
-        auto strOut = std::move(blt::string::getStringFromUTF8(str));
+        auto strOut = blt::string::getStringFromUTF8(str);
         delete[] str.characters;
         return strOut;
     }
+    
+    void named_tag::writeName(std::fstream& out) {
+        writeUTF8String(out, name);
+    }
+    
+    void named_tag::readName(std::fstream& in) {
+        name = readUTF8String(in);
+    }
+    
+    void tag_end::writePayload(std::fstream& out) {
+        out.put('\0');
+    }
 }

src/tests/main.cpp

@@ -9,8 +9,88 @@
 #include "blt/math/matrix.h"
 #include <bitset>
 #include "hashmap_tests.h"
+#include <functional>
 
-int main() {
+std::function<int(int i)> test{
+    [](int i) -> int {
+        int acc = 1;
+        for (int j = 0; j < i; j++){
+            acc += j * i;
+        }
+        return acc;
+    }
+};
+
+int test_as_func(int i){
+    int acc = 1;
+    for (int j = 0; j < i; j++){
+        acc += j * i;
+    }
+    return acc;
+}
+
+class super_func {
+    public:
+        virtual int test(int i) = 0;
+        virtual ~super_func() = default;
+};
+
+class class_func : public super_func {
+    public:
+        int test(int i) override {
+            int acc = 1;
+            for (int j = 0; j < i; j++){
+                acc += j * i;
+            }
+            return acc;
+        }
+};
+
+int main(int argc, char** argv) {
+    
+    if (argc > 1 && std::string(argv[1]) == "--no_color") {
+        for (int i = (int)blt::logging::log_level::NONE; i < (int)blt::logging::log_level::FATAL; i++) {
+            blt::logging::setLogColor((blt::logging::log_level)i, "");
+        }
+        blt::logging::setLogOutputFormat("[${{TIME}}] [${{LOG_LEVEL}}] (${{FILE}}:${{LINE}}) ${{STR}}\n");
+    }
+    
+    class_func* funy = new class_func;
+    super_func* virtual_funy = new class_func;
+    
+    int num_of_tests = 100000;
+    int acc = 1;
+    BLT_START_INTERVAL("Functions Test", "std::function");
+    acc = 1;
+    for (int i = 0; i < num_of_tests; i++){
+        acc = test(acc);
+    }
+    BLT_END_INTERVAL("Functions Test", "std::function");
+    
+    BLT_START_INTERVAL("Functions Test", "normal function");
+    acc = 1;
+    for (int i = 0; i < num_of_tests; i++){
+        acc = test_as_func(acc);
+    }
+    BLT_END_INTERVAL("Functions Test", "normal function");
+    
+    BLT_START_INTERVAL("Functions Test", "virtual class direct");
+    acc = 1;
+    for (int i = 0; i < num_of_tests; i++){
+        acc = funy->test(acc);
+    }
+    BLT_END_INTERVAL("Functions Test", "virtual class direct");
+    
+    BLT_START_INTERVAL("Functions Test", "virtual class");
+    acc = 1;
+    for (int i = 0; i < num_of_tests; i++){
+        acc = virtual_funy->test(acc);
+    }
+    BLT_END_INTERVAL("Functions Test", "virtual class");
+    
+    BLT_PRINT_PROFILE("Functions Test");
+    delete virtual_funy;
+    
     binaryTreeTest();
     
     run_logging();

src/tests/nbt_tests.h

@@ -14,12 +14,12 @@
 #include <blt/std/filesystem.h>
 
 inline bool readLargeBlockUsingNBTBufferedReader(const std::string& file, const blt::scoped_buffer<char>& bufferToCompare, size_t bufferSize) {
-    blt::scoped_buffer<char> read_buffer{bufferToCompare.size};
+    blt::scoped_buffer<char> read_buffer{bufferToCompare.size()};
     std::fstream largeBlockInputLarge(file, std::ios::in | std::ios::binary);
     blt::fs::fstream_block_reader byteLargeBlockInputLarge(largeBlockInputLarge, bufferSize);
-    byteLargeBlockInputLarge.read(read_buffer.buffer, bufferToCompare.size);
-    for (unsigned int i = 0; i < bufferToCompare.size; i++) {
-        if (read_buffer[i] != bufferToCompare.buffer[i])
+    byteLargeBlockInputLarge.read(*read_buffer, bufferToCompare.size());
+    for (unsigned int i = 0; i < bufferToCompare.size(); i++) {
+        if (read_buffer[i] != bufferToCompare[i])
             return false;
     }
     largeBlockInputLarge.close();
@@ -29,7 +29,7 @@ inline bool readLargeBlockUsingNBTBufferedReader(const std::string& file, const
 inline bool readIndividualUsingNBTBufferedReader(const std::string& file, const blt::scoped_buffer<char>& bufferToCompare, size_t bufferSize) {
     std::fstream largeBlockInput(file, std::ios::in | std::ios::binary);
     blt::fs::fstream_block_reader byteLargeBlockInput(largeBlockInput, bufferSize);
-    for (unsigned int i = 0; i < bufferToCompare.size; i++) {
+    for (unsigned int i = 0; i < bufferToCompare.size(); i++) {
         char byte;
         byteLargeBlockInput.read(&byte, 1);
         if (byte != bufferToCompare[i]) {
@@ -52,11 +52,11 @@ inline void nbt_read_tests(){
     bool fstream_large_correct = true;
     
     for (int i = 0; i < bufferSize; i++)
-        buffer.buffer[i] = i+1;
+        buffer[i] = i + 1;
     
     BLT_START_INTERVAL("nbt read", "Raw Write");
     std::fstream largeOutput("HeyThere.txt", std::ios::out | std::ios::binary);
-    largeOutput.write(buffer.buffer, bufferSize);
+    largeOutput.write(*buffer, bufferSize);
     largeOutput.flush();
     largeOutput.close();
     BLT_END_INTERVAL("nbt read", "Raw Write");
@@ -129,7 +129,7 @@ inline void nbt_write_tests(){
     blt::scoped_buffer<char> read_buffer{bufferSize};
     
     for (int i = 0; i < bufferSize; i++)
-        buffer.buffer[i] = i+1;
+        buffer[i] = i + 1;
     
     std::fstream fileOutput("IAmAFile.txt", std::ios::binary | std::ios::out);
     for (int i = 0; i < 8; i++) {
@@ -139,11 +139,11 @@ inline void nbt_write_tests(){
         blt::fs::fstream_block_writer writer(fileOutput, size);
         
         BLT_START_INTERVAL("nbt write block", profiler_string);
-        writer.write(buffer.buffer, buffer.size);
+        writer.write(*buffer, buffer.size());
         BLT_END_INTERVAL("nbt write block", profiler_string);
         BLT_START_INTERVAL("nbt write individual", profiler_string);
         for (int j = 0; j < bufferSize; j++) {
-            writer.write(&buffer.buffer[j], 1);
+            writer.write(&buffer[j], 1);
         }
         BLT_END_INTERVAL("nbt write individual", profiler_string);
     }
@@ -155,7 +155,7 @@ inline void nbt_write_tests(){
         auto size = (size_t) std::pow(2, 11 + i);
         auto size_str = std::to_string(size);
         bool results = true;
-        fileInput.read(read_buffer.buffer, bufferSize);
+        fileInput.read(*read_buffer, bufferSize);
         for (int j = 0; j < bufferSize; j++) {
             if (buffer[j] != read_buffer[j]) {
                 results = false;
@@ -166,7 +166,7 @@ inline void nbt_write_tests(){
         BLT_INFO("NBT %s Block Write Correctly? %s;\n", size_str.c_str(), results ? "True" : "False");
     
         results = true;
-        fileInput.read(read_buffer.buffer, bufferSize);
+        fileInput.read(*read_buffer, bufferSize);
         for (int j = 0; j < bufferSize; j++) {
             if (buffer[j] != read_buffer[j]) {
                 results = false;