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CLK/Reflection/Dispatcher.hpp
Thomas Harte 315e0b4545 Add experimental 6809 opcode decoder.
Just a pleasant distraction, for now.
2023-03-17 21:20:35 -04:00

40 lines
949 B
C++

//
// Dispatcher.hpp
// Clock Signal
//
// Created by Thomas Harte on 17/03/2023.
// Copyright © 2023 Thomas Harte. All rights reserved.
//
#ifndef Dispatcher_hpp
#define Dispatcher_hpp
#include <cstdint>
namespace Reflection {
/*!
Calls @c t.dispatch<c>(args...) as efficiently as possible.
*/
template <typename TargetT, typename... Args> void dispatch(TargetT &t, uint8_t c, Args &&... args) {
#define Opt(x) case x: t.template dispatch<x>(std::forward<Args>(args)...); break
#define Opt4(x) Opt(x + 0x00); Opt(x + 0x01); Opt(x + 0x02); Opt(x + 0x03)
#define Opt16(x) Opt4(x + 0x00); Opt4(x + 0x04); Opt4(x + 0x08); Opt4(x + 0x0c)
#define Opt64(x) Opt16(x + 0x00); Opt16(x + 0x10); Opt16(x + 0x20); Opt16(x + 0x30)
#define Opt256(x) Opt64(x + 0x00); Opt64(x + 0x40); Opt64(x + 0x80); Opt64(x + 0xc0)
switch(c) {
Opt256(0);
}
#undef Opt256
#undef Opt64
#undef Opt16
#undef Opt4
#undef Opt
}
}
#endif /* Dispatcher_hpp */