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Liberated the tape parser template.

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This commit is contained in:
Thomas Harte 2016-09-05 20:02:35 -04:00
parent 463b74301d
commit 05c24222d8
3 changed files with 73 additions and 54 deletions
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2
OSBindings/Mac/Clock Signal.xcodeproj/project.pbxproj
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@ -776,6 +776,7 @@
4BCA98C21D065CA20062F44C /* 6522.hpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.h; path = 6522.hpp; sourceTree = "<group>"; };
4BD14B0F1D74627C0088EAD6 /* AcornAnalyser.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = AcornAnalyser.cpp; path = ../../StaticAnalyser/Acorn/AcornAnalyser.cpp; sourceTree = "<group>"; };
4BD14B101D74627C0088EAD6 /* AcornAnalyser.hpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.h; name = AcornAnalyser.hpp; path = ../../StaticAnalyser/Acorn/AcornAnalyser.hpp; sourceTree = "<group>"; };
4BD328FD1D7E3EB5003B8C44 /* TapeParser.hpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.h; name = TapeParser.hpp; path = ../../StaticAnalyser/TapeParser.hpp; sourceTree = "<group>"; };
4BD5F1931D13528900631CD1 /* CSBestEffortUpdater.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = CSBestEffortUpdater.h; path = Updater/CSBestEffortUpdater.h; sourceTree = "<group>"; };
4BD5F1941D13528900631CD1 /* CSBestEffortUpdater.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; name = CSBestEffortUpdater.m; path = Updater/CSBestEffortUpdater.m; sourceTree = "<group>"; };
4BEE0A6A1D72496600532C7B /* Cartridge.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = Cartridge.cpp; sourceTree = "<group>"; };
@ -1604,6 +1605,7 @@
4BF1354B1D6D2C300054B2EA /* StaticAnalyser.hpp */,
4BC830D21D6E7C6D0000A26F /* Commodore */,
4BD14B121D7462810088EAD6 /* Acorn */,
4BD328FD1D7E3EB5003B8C44 /* TapeParser.hpp */,
);
name = StaticAnalyser;
sourceTree = "<group>";

56
StaticAnalyser/Acorn/Tape.cpp
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@ -9,62 +9,10 @@
#include "Tape.hpp"
#include <deque>
#include "../TapeParser.hpp"
using namespace StaticAnalyser::Acorn;
/*!
A partly-abstract base class to help in the authorship of tape format parsers;
provides hooks for a
*/
template <typename WaveType, typename SymbolType> class TapeParser {
public:
TapeParser(const std::shared_ptr<Storage::Tape::Tape> &tape) : _tape(tape), _has_next_symbol(false) {}
void reset_error_flag() { _error_flag = false; }
bool get_error_flag() { return _error_flag; }
bool is_at_end() { return _tape->is_at_end(); }
protected:
bool _error_flag;
void push_wave(WaveType wave)
{
_wave_queue.push_back(wave);
inspect_waves(_wave_queue);
}
void remove_waves(int number_of_waves)
{
_wave_queue.erase(_wave_queue.begin(), _wave_queue.begin()+number_of_waves);
}
void push_symbol(SymbolType symbol, int number_of_waves)
{
_has_next_symbol = true;
_next_symbol = symbol;
remove_waves(number_of_waves);
}
SymbolType get_next_symbol()
{
while(!_has_next_symbol && !is_at_end())
{
process_pulse(_tape->get_next_pulse());
}
_has_next_symbol = false;
return _next_symbol;
}
private:
virtual void process_pulse(Storage::Tape::Tape::Pulse pulse) = 0;
virtual void inspect_waves(const std::vector<WaveType> &waves) = 0;
std::vector<WaveType> _wave_queue;
SymbolType _next_symbol;
bool _has_next_symbol;
std::shared_ptr<Storage::Tape::Tape> _tape;
};
enum class WaveType {
Short, Long, Unrecognised
};
@ -73,7 +21,7 @@ enum class SymbolType {
One, Zero
};
class Acorn1200BaudTapeParser: public TapeParser<WaveType, SymbolType> {
class Acorn1200BaudTapeParser: public StaticAnalyer::TapeParser<WaveType, SymbolType> {
public:
Acorn1200BaudTapeParser(const std::shared_ptr<Storage::Tape::Tape> &tape) : TapeParser(tape) {}

69
StaticAnalyser/TapeParser.hpp Normal file
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@ -0,0 +1,69 @@
//
// TapeParser.hpp
// Clock Signal
//
// Created by Thomas Harte on 05/09/2016.
// Copyright © 2016 Thomas Harte. All rights reserved.
//
#ifndef TapeParser_hpp
#define TapeParser_hpp
namespace StaticAnalyer {
/*!
A partly-abstract base class to help in the authorship of tape format parsers;
provides hooks for a
*/
template <typename WaveType, typename SymbolType> class TapeParser {
public:
TapeParser(const std::shared_ptr<Storage::Tape::Tape> &tape) : _tape(tape), _has_next_symbol(false) {}
void reset_error_flag() { _error_flag = false; }
bool get_error_flag() { return _error_flag; }
bool is_at_end() { return _tape->is_at_end(); }
protected:
bool _error_flag;
void push_wave(WaveType wave)
{
_wave_queue.push_back(wave);
inspect_waves(_wave_queue);
}
void remove_waves(int number_of_waves)
{
_wave_queue.erase(_wave_queue.begin(), _wave_queue.begin()+number_of_waves);
}
void push_symbol(SymbolType symbol, int number_of_waves)
{
_has_next_symbol = true;
_next_symbol = symbol;
remove_waves(number_of_waves);
}
SymbolType get_next_symbol()
{
while(!_has_next_symbol && !is_at_end())
{
process_pulse(_tape->get_next_pulse());
}
_has_next_symbol = false;
return _next_symbol;
}
private:
virtual void process_pulse(Storage::Tape::Tape::Pulse pulse) = 0;
virtual void inspect_waves(const std::vector<WaveType> &waves) = 0;
std::vector<WaveType> _wave_queue;
SymbolType _next_symbol;
bool _has_next_symbol;
std::shared_ptr<Storage::Tape::Tape> _tape;
};
}
#endif /* TapeParser_hpp */