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c57f9cf8b1
It stores and displays the result in the console store. An empty line returned at the end of the execution is deleted. Change-Id: Ic90e02e2d91d0a0033413da0588032d9450aefd0
42 lines
1.4 KiB
C++
42 lines
1.4 KiB
C++
#ifndef CODE_CONSOLE_STORE_H
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#define CODE_CONSOLE_STORE_H
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#include "console_line.h"
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#include <stddef.h>
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namespace Code {
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class ConsoleStore {
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public:
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ConsoleStore();
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ConsoleLine lineAtIndex(int i) const;
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int numberOfLines() const;
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void pushCommand(const char * text, size_t length);
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void pushResult(const char * text, size_t length);
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void deleteLastLineIfEmpty();
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private:
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static constexpr char CommandMarker = 0x01;
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static constexpr char ResultMarker = 0x02;
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static constexpr int k_historySize = 1024;
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void push(const char marker, const char * text, size_t length);
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ConsoleLine::Type lineTypeForMarker(char marker) const;
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int indexOfNullMarker() const;
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void deleteFirstLine();
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/* When there is no room left to store a new ConsoleLine, we have to delete
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* old ConsoleLines. deleteFirstLine() deletes the first ConsoleLine of
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* m_history and shifts the rest of the ConsoleLines towards the beginning of
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* m_history. */
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void deleteLastLine();
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char m_history[k_historySize];
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/* The m_history variable sequentially stores an array of ConsoleLine objects.
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* Each ConsoleLine is stored as follow:
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* - First, a char that says whether the ConsoleLine is a Command or a Result
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* - Then, the text content of the ConsoleLine
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* - Last but not least, a null byte.
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* The buffer ends whenever the marker char is null. */
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};
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}
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#endif
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