.

CMakeLists.txt

@@ -61,6 +61,8 @@ FetchContent_MakeAvailable(googletest)
 add_library(lib${PROJECT_NAME} STATIC
         src/bytecode/bytearray.hh
         src/bytecode/bytearray.cc
+        src/bytecode/bytecode.cc
+        src/bytecode/bytecode.hh
 )
 
 target_compile_options(lib${PROJECT_NAME} PRIVATE ${warnings})

TODO.md

@@ -4,9 +4,10 @@
   - Auto-expand
   - Add/retrive byte/int/float/string
   - Should not be larger than the byte array itself
-- [ ] Chunk
+- [ ] Bytecode
   - Add/retrive all types of data
   - Keeps no memory except for caching
-- [ ] Chunk loader
+- [ ] Bytecode debugging info
+- [ ] Bytecode loader
   - Combine multiple chunks
   - Resolve function ids, constant ids, etc

src/bytecode/bytecode.cc

@@ -0,0 +1,6 @@
+#include "bytecode.hh"
+
+namespace tyche {
+
+
+}

src/bytecode/bytecode.hh

@@ -0,0 +1,49 @@
+#ifndef TYCHE_BYTECODE_HH
+#define TYCHE_BYTECODE_HH
+
+#include "bytearray.hh"
+
+namespace tyche {
+
+class Bytecode {
+public:
+    // reading
+
+    Bytecode(std::vector<uint8_t> data);
+
+    [[nodiscard]] uint32_t n_constants() const;
+    [[nodiscard]] uint32_t n_functions() const;
+
+    [[nodiscard]] int32_t     get_constant_int(uint32_t addr) const;
+    [[nodiscard]] float       get_constant_float(uint32_t addr) const;
+    [[nodiscard]] std::string get_constant_string(uint32_t addr) const;
+
+    struct FunctionDef { uint16_t n_params, locals; };
+    [[nodiscard]] FunctionDef get_function_def(uint32_t function_id) const;
+
+    [[nodiscard]] uint8_t get_code_byte(uint32_t function_id, uint32_t idx) const;
+    [[nodiscard]] int32_t get_code_int(uint32_t function_id, uint32_t idx) const;
+    [[nodiscard]] float   get_code_float(uint32_t function_id, uint32_t idx) const;
+
+    // writing
+
+    Bytecode();
+
+    uint32_t add_constant(int32_t value);
+    uint32_t add_constant(float value);
+    uint32_t add_constant(std::string const& str);
+
+    uint32_t add_function(uint16_t n_params, uint16_t locals);
+
+    uint32_t add_code(uint8_t operation);
+    uint32_t add_code(uint8_t operation, int32_t operand_);
+
+    // TODO - debugging info
+
+private:
+    ByteArray byte_array_;
+};
+
+}
+
+#endif //TYCHE_BYTECODE_HH