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