first commit

ProtoGen/ProtoUtil.h

@@ -0,0 +1,32 @@
+#pragma once
+
+#include <vector>
+#include <cstdint>
+
+const uint8_t bytes_i32[4] = {0, 0, 0, 1};
+const uint8_t bytes_i64[8] = {0, 0, 0, 0, 0, 0, 0, 1};
+
+const std::vector<uint8_t> VECTOR_ONE = {1};
+const std::vector<uint8_t> VECTOR_ZERO = {0};
+const std::vector<uint8_t> VECTOR_COLLECTION = {1, 0};
+
+const std::vector<std::vector<uint8_t>> LENGTH_PREFIXED_SAMPLES = {
+    {1, 0, 0, 0, 0},
+    {1, 0, 0, 0, 0, 0, 0, 0, 0},
+    {5, 0x08, 0x01, 0x33, 0x01, 0x00},
+    {5, 0x10, 0x01, 0x33, 0x10, 0x00},
+};
+
+const std::vector<uint8_t> LENGTH_I32 = {bytes_i32, bytes_i32 + 4};
+const std::vector<uint8_t> LENGTH_I64 = {bytes_i64, bytes_i64 + 8};
+
+// Constantes wire types
+constexpr uint8_t WIRE_TYPE_VAR_INT = 0;
+constexpr uint8_t WIRE_TYPE_I64 = 1;
+constexpr uint8_t WIRE_TYPE_LENGTH_PREFIXED = 2;
+constexpr uint8_t WIRE_TYPE_I32 = 5;
+
+// Prototipos de funciones
+size_t varint_length(uint32_t v);
+size_t encode_varint(std::vector<uint8_t>& dst, uint32_t value);
+uint32_t pack_wire_tag(uint32_t field_id, uint8_t wire_type);