builtin.cpp

来自「一个在linux下的shell的计算器」· C++ 代码 · 共 73 行

/*
 *
 *
 *
 */

#include <iostream>
#include "builtin.h"
#include "calculator.h"

using namespace std;

//
//
//
void LoadBuiltin(ItemList & list)
{
 list.Add(new Operation(EXIT, "exit", 0));
 list.Add(new Operation(BRACE, "{", 0));
 list.Add(new Operation(UNBRACE, "}", 0));
 list.Add(new Operation(SCI, "sci", 0));
 list.Add(new Operation(FIX, "fix", 0));
 list.Add(new Operation(DEC, "dec", 0));
 list.Add(new Operation(HEX, "hex", 0));
 list.Add(new Operation(OCT, "oct", 0));
 list.Add(new Operation(HELP, "help", 0));
 list.Add(new Operation(CLR, "clear", 0));
 list.Add(new Operation(RCL, "rcl", 1));
 list.Add(new Operation(DIG, "digits", 1));
 list.Add(new Operation(DROP, "drop", 1));
 list.Add(new Operation(DUP, "dup", 1));
 list.Add(new Operation(STO, "sto", 2));
 list.Add(new Operation(SWAP, "swap", 2));

 // Alias
 list.Add(new Operation(EXIT, "quit", 0));
 list.Add(new Operation(EXIT, "q", 0));
 list.Add(new Operation(HELP, "?", 0));
 list.Add(new Operation(SWAP, "%", 2));
 list.Add(new Operation(DROP, ".", 1));
 list.Add(new Operation(DUP, "=", 1));
 list.Add(new Operation(CLR, "@", 0));
 list.Add(new Operation(DIG, "dig", 1));
}

//
//
//
void StackHelp()
{
 cout << endl << "Stack operations: " << endl << endl;
 cout << "  clear    Clears the stack." << endl;
 cout << "  dup      Duplicates the first element in the stack." << endl;
 cout << "  drop     Deletes the first element in the stack." << endl;
 cout << "  swap     Swaps the first and second elements in the stack." << endl;
}

//
//
//
void FormatHelp()
{
 cout << endl << "Format operations: " << endl << endl;
 cout << "  sci      Use scientific notation." << endl;
 cout << "  fix      Use fixed notation." << endl;
 cout << "  dig      Set number of decimal digits." << endl;
 cout << "  dec      Display integers using decimal base." << endl;
 cout << "  hex      Display integers using hexadecimal base." << endl;
 cout << "  oct      Display integers using octal base." << endl;
}