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#ifndef BYTECODE_HPP
#define BYTECODE_HPP
#include <fstream>
#include <iostream>
#include <string>
#include <vector>
namespace SpasmImpl
{
namespace ASM
{
class Bytecode_Stream
{
public:
typedef unsigned char byte;
enum Opcode_t : byte
{
halt = 0,
push,
pop,
dup,
print,
read,
plus,
minus,
multiply,
divide,
modulus,
gotrue,
gofalse,
go,
call,
ret,
load,
store,
less,
lesseq
};
virtual ~Bytecode_Stream();
virtual void push_opcode(Opcode_t) = 0;
virtual void push_integer(int) = 0;
virtual void push_location(size_t) = 0;
virtual void set_location(size_t, size_t) = 0;
virtual size_t size() const = 0;
}; // class Bytecode_Stream
class Bytecode_File : public Bytecode_Stream
{
public:
Bytecode_File(const std::string&);
virtual void push_opcode(Opcode_t);
virtual void push_integer(int);
private:
Bytecode_File(const Bytecode_File&);
Bytecode_File& operator=(const Bytecode_File&);
void push_byte(Bytecode_Stream::byte);
std::ofstream _bytecode;
}; // class Bytecode_File
class Bytecode_Memory : public Bytecode_Stream
{
public:
virtual void push_opcode(Opcode_t);
virtual void push_integer(int);
virtual void push_location(size_t);
virtual void set_location(size_t, size_t);
virtual size_t size() const;
typedef std::vector<Bytecode_Stream::byte> Bytecode;
const Bytecode& bytecode() const;
private:
void push_byte(Bytecode_Stream::byte);
std::vector<Bytecode_Stream::byte> _bytecode;
}; // class Bytecode_Memory
} // namespace ASM
} // namespace SpasmImpl
#endif // BYTECODE_HPP
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