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CLK/Storage/Tape/PulseQueuedTape.hpp
2024-01-16 23:34:46 -05:00

50 lines
1.1 KiB
C++

//
// PulseQueuedTape.hpp
// Clock Signal
//
// Created by Thomas Harte on 16/07/2017.
// Copyright 2017 Thomas Harte. All rights reserved.
//
#pragma once
#include "Tape.hpp"
#include <vector>
namespace Storage::Tape {
/*!
Provides a @c Tape with a queue of upcoming pulses and an is-at-end flag.
If is-at-end is set then get_next_pulse() returns a second of silence and
is_at_end() returns true.
Otherwise get_next_pulse() returns something from the pulse queue if there is
anything there, and otherwise calls get_next_pulses(). get_next_pulses() is
virtual, giving subclasses a chance to provide the next batch of pulses.
*/
class PulseQueuedTape: public Tape {
public:
PulseQueuedTape();
bool is_at_end();
protected:
void emplace_back(Tape::Pulse::Type type, Time length);
void emplace_back(const Tape::Pulse &&pulse);
void clear();
bool empty();
void set_is_at_end(bool);
virtual void get_next_pulses() = 0;
private:
Pulse virtual_get_next_pulse();
Pulse silence();
std::vector<Pulse> queued_pulses_;
std::size_t pulse_pointer_;
bool is_at_end_;
};
}