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// Chunk data type, and derived types
#pragma once
#include <cstdint>
#include <string>
#include <vector>
// TODO: use it everywhere!
using OP_T = std::vector<uint8_t>;
class Chunk
{
public:
virtual ~Chunk(){}
virtual std::vector<uint8_t> getCode() = 0;
virtual size_t size() = 0; ///< returns size in bytes
};
// can be added via multiple inheritance to chunks with addresses
struct AddressFeature
{
std::string label;
bool relativeAddressing{true};
std::vector<uint8_t> machine_code;
size_t addr_size{0};
size_t addr_offs{0}; ///< offset inside code
std::vector<uint8_t> alternative_code;
size_t alternative_size{0};
size_t alternative_offs{0}; ///< offset inside code
};
class Label: public Chunk
{
public:
Label(const std::string& name) : m_name(name) {}
std::string name(){return m_name;}
std::vector<uint8_t> getCode() override { return {}; }
size_t size() override { return 0; }
private:
std::string m_name;
};
class Data: public Chunk
{
public:
Data(const std::vector<uint8_t>& data): m_data(data) {}
virtual ~Data(){}
std::vector<uint8_t> getCode() override
{
return m_data;
}
size_t size() override
{
return m_data.size();
}
protected:
std::vector<uint8_t> m_data;
};
class Op: public Chunk
{
public:
virtual ~Op(){};
virtual bool optimize() = 0; ///< returns true if changed
};
class OpSimple: public Op
{
public:
OpSimple(std::vector<uint8_t> machine_code): machine_code(machine_code) {}
std::vector<uint8_t> getCode() override
{
return machine_code;
}
size_t size() override
{
return machine_code.size();
}
bool optimize() override ///< returns true if changed
{
return false;
}
protected:
std::vector<uint8_t> machine_code;
};
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