2016年2月25日木曜日

開発環境

  • OS X El Capitan - Apple (OS)
  • Emacs(Text Editor)
  • Java (実行環境)

コンピュータシステムの理論と実装 (Noam Nisan (著)、Shimon Schocken (著)、斎藤 康毅(翻訳)、オライリージャパン)の12章(オペレーティングシステム)、12.5(プロジェクト)を取り組んでみる。

12.5(プロジェクト)

コード(Emacs)

Output.jack

class Output {
  static Array charMaps;
  static int cur_line;
  static int cur_col;

  function void init() {
    let cur_line = 0;
    let cur_col = 0;

    do Output.initMap();
    return;
  }
  function void initMap() {
    var int i;
    
    let charMaps = Array.new(127);
        
    do Output.create(0,63,63,63,63,63,63,63,63,63,0,0);

    do Output.create(32,0,0,0,0,0,0,0,0,0,0,0);          //
    do Output.create(33,12,30,30,30,12,12,0,12,12,0,0);  // !
    do Output.create(34,54,54,20,0,0,0,0,0,0,0,0);       // "
    do Output.create(35,0,18,18,63,18,18,63,18,18,0,0);  // #
    do Output.create(36,12,30,51,3,30,48,51,30,12,12,0); // $
    do Output.create(37,0,0,35,51,24,12,6,51,49,0,0);    // %
    do Output.create(38,12,30,30,12,54,27,27,27,54,0,0); // &
    do Output.create(39,12,12,6,0,0,0,0,0,0,0,0);        // '
    do Output.create(40,24,12,6,6,6,6,6,12,24,0,0);      // (
    do Output.create(41,6,12,24,24,24,24,24,12,6,0,0);   // )
    do Output.create(42,0,0,0,51,30,63,30,51,0,0,0);     // *
    do Output.create(43,0,0,0,12,12,63,12,12,0,0,0);     // +
    do Output.create(44,0,0,0,0,0,0,0,12,12,6,0);        // ,
    do Output.create(45,0,0,0,0,0,63,0,0,0,0,0);         // -
    do Output.create(46,0,0,0,0,0,0,0,12,12,0,0);        // .    
    do Output.create(47,0,0,32,48,24,12,6,3,1,0,0);      // /
        
    do Output.create(48,12,30,51,51,51,51,51,30,12,0,0); // 0
    do Output.create(49,12,14,15,12,12,12,12,12,63,0,0); // 1
    do Output.create(50,30,51,48,24,12,6,3,51,63,0,0);   // 2
    do Output.create(51,30,51,48,48,28,48,48,51,30,0,0); // 3
    do Output.create(52,16,24,28,26,25,63,24,24,60,0,0); // 4
    do Output.create(53,63,3,3,31,48,48,48,51,30,0,0);   // 5
    do Output.create(54,28,6,3,3,31,51,51,51,30,0,0);    // 6
    do Output.create(55,63,49,48,48,24,12,12,12,12,0,0); // 7
    do Output.create(56,30,51,51,51,30,51,51,51,30,0,0); // 8
    do Output.create(57,30,51,51,51,62,48,48,24,14,0,0); // 9
        
    do Output.create(58,0,0,12,12,0,0,12,12,0,0,0);      // :
    do Output.create(59,0,0,12,12,0,0,12,12,6,0,0);      // ;
    do Output.create(60,0,0,24,12,6,3,6,12,24,0,0);      // <
    do Output.create(61,0,0,0,63,0,0,63,0,0,0,0);        // =
    do Output.create(62,0,0,3,6,12,24,12,6,3,0,0);       // >
    do Output.create(64,30,51,51,59,59,59,27,3,30,0,0);  // @
    do Output.create(63,30,51,51,24,12,12,0,12,12,0,0);  // ?

    do Output.create(65,12,30,51,51,63,51,51,51,51,0,0); // A ** TO BE FILLED **
    do Output.create(66,31,51,51,51,31,51,51,51,31,0,0); // B
    do Output.create(67,28,54,35,3,3,3,35,54,28,0,0);    // C
    do Output.create(68,15,27,51,51,51,51,51,27,15,0,0); // D
    do Output.create(69,63,51,35,11,15,11,35,51,63,0,0); // E
    do Output.create(70,63,51,35,11,15,11,3,3,3,0,0);    // F
    do Output.create(71,28,54,35,3,59,51,51,54,44,0,0);  // G
    do Output.create(72,51,51,51,51,63,51,51,51,51,0,0); // H
    do Output.create(73,30,12,12,12,12,12,12,12,30,0,0); // I
    do Output.create(74,60,24,24,24,24,24,27,27,14,0,0); // J
    do Output.create(75,51,51,51,27,15,27,51,51,51,0,0); // K
    do Output.create(76,3,3,3,3,3,3,35,51,63,0,0);       // L
    do Output.create(77,33,51,63,63,51,51,51,51,51,0,0); // M
    do Output.create(78,51,51,55,55,63,59,59,51,51,0,0); // N
    do Output.create(79,30,51,51,51,51,51,51,51,30,0,0); // O
    do Output.create(80,31,51,51,51,31,3,3,3,3,0,0);     // P
    do Output.create(81,30,51,51,51,51,51,63,59,30,48,0);// Q
    do Output.create(82,31,51,51,51,31,27,51,51,51,0,0); // R
    do Output.create(83,30,51,51,6,28,48,51,51,30,0,0);  // S
    do Output.create(84,63,63,45,12,12,12,12,12,30,0,0); // T
    do Output.create(85,51,51,51,51,51,51,51,51,30,0,0); // U
    do Output.create(86,51,51,51,51,51,30,30,12,12,0,0); // V
    do Output.create(87,51,51,51,51,51,63,63,63,18,0,0); // W
    do Output.create(88,51,51,30,30,12,30,30,51,51,0,0); // X
    do Output.create(89,51,51,51,51,30,12,12,12,30,0,0); // Y
    do Output.create(90,63,51,49,24,12,6,35,51,63,0,0);  // Z

    do Output.create(91,30,6,6,6,6,6,6,6,30,0,0);          // [
    do Output.create(92,0,0,1,3,6,12,24,48,32,0,0);        // \
    do Output.create(93,30,24,24,24,24,24,24,24,30,0,0);   // ]
    do Output.create(94,8,28,54,0,0,0,0,0,0,0,0);          // ^
    do Output.create(95,0,0,0,0,0,0,0,0,0,63,0);           // _
    do Output.create(96,6,12,24,0,0,0,0,0,0,0,0);          // `

    do Output.create(97,0,0,0,14,24,30,27,27,54,0,0);      // a
    do Output.create(98,3,3,3,15,27,51,51,51,30,0,0);      // b
    do Output.create(99,0,0,0,30,51,3,3,51,30,0,0);        // c
    do Output.create(100,48,48,48,60,54,51,51,51,30,0,0);  // d
    do Output.create(101,0,0,0,30,51,63,3,51,30,0,0);      // e
    do Output.create(102,28,54,38,6,15,6,6,6,15,0,0);      // f
    do Output.create(103,0,0,30,51,51,51,62,48,51,30,0);   // g
    do Output.create(104,3,3,3,27,55,51,51,51,51,0,0);     // h
    do Output.create(105,12,12,0,14,12,12,12,12,30,0,0);   // i
    do Output.create(106,48,48,0,56,48,48,48,48,51,30,0);  // j
    do Output.create(107,3,3,3,51,27,15,15,27,51,0,0);     // k
    do Output.create(108,14,12,12,12,12,12,12,12,30,0,0);  // l
    do Output.create(109,0,0,0,29,63,43,43,43,43,0,0);     // m
    do Output.create(110,0,0,0,29,51,51,51,51,51,0,0);     // n
    do Output.create(111,0,0,0,30,51,51,51,51,30,0,0);     // o
    do Output.create(112,0,0,0,30,51,51,51,31,3,3,0);      // p
    do Output.create(113,0,0,0,30,51,51,51,62,48,48,0);    // q
    do Output.create(114,0,0,0,29,55,51,3,3,7,0,0);        // r
    do Output.create(115,0,0,0,30,51,6,24,51,30,0,0);      // s
    do Output.create(116,4,6,6,15,6,6,6,54,28,0,0);        // t
    do Output.create(117,0,0,0,27,27,27,27,27,54,0,0);     // u
    do Output.create(118,0,0,0,51,51,51,51,30,12,0,0);     // v
    do Output.create(119,0,0,0,51,51,51,63,63,18,0,0);     // w
    do Output.create(120,0,0,0,51,30,12,12,30,51,0,0);     // x
    do Output.create(121,0,0,0,51,51,51,62,48,24,15,0);    // y
    do Output.create(122,0,0,0,63,27,12,6,51,63,0,0);      // z
        
    do Output.create(123,56,12,12,12,7,12,12,12,56,0,0);   // {
    do Output.create(124,12,12,12,12,12,12,12,12,12,0,0);  // |
    do Output.create(125,7,12,12,12,56,12,12,12,7,0,0);    // }
    do Output.create(126,38,45,25,0,0,0,0,0,0,0,0);        // ~

 return;
  }

  // Creates a character map array of the given char index with the given values.
  function void create(int index, int a, int b, int c, int d, int e,
                       int f, int g, int h, int i, int j, int k) {
 var Array map;

 let map = Array.new(11);
    let charMaps[index] = map;

    let map[0] = a;
    let map[1] = b;
    let map[2] = c;
    let map[3] = d;
    let map[4] = e;
    let map[5] = f;
    let map[6] = g;
    let map[7] = h;
    let map[8] = i;
    let map[9] = j;
    let map[10] = k;

    return;
  }
  function Array getMap(char c) {
        
    if ((c < 32) | (c > 126)) {
      let c = 0;
    }
        
    return charMaps[c];
  }
  function void moveCursor(int i, int j) {
    let cur_line = i;
    let cur_col = j;

    return;
  }
  function void printChar(char c) {
    var Array map;
    var int i;
    var int j;
    var int bit;

    let map = Output.getMap(c);
    let i = 0;    
    
    while (i < 11) {
      let j = 0;
      let bit = 1;
      while (j < 8) {
        do Screen.setColor(bit & map[i]);
        do Screen.drawPixel(Math.multiply(cur_col, 8) + j,
                            Math.multiply(cur_line, 11) + i);
        let j = j + 1;
        let bit = Math.multiply(bit, 2);
      }
      let i = i + 1;
    }
    if (cur_col = 63) {
      let cur_col = 0;
      let cur_line = cur_line + 1;
    } else {
      let cur_col = cur_col + 1;
    }
    if (cur_line = 23) {
      let cur_col = 0;
      let cur_line = 0;
    }
    return;
  }
  function void printString(String s) {
    var int i;
    var itn len;

    let i = 0;
    let len = s.length();
    while (i < len) {
      do Output.printChar(s.charAt(i));
      let i = i + 1;
    }
    
    return;
  }
  function void printInt(int i) {
    var String s;
    
    let s = String.new(6);
    do s.setInt(i);
    do Output.printString(s);
    do s.dispose();
    return;
  }
  function void println() {
    if (cur_line < 22) {
      let cur_line = cur_line + 1;
      let cur_col = 0;      
    }
    return;
  }
  function void backSpace() {
    if (cur_col = 0) {
      if (cur_line > 0) {
        let cur_col = 63;
        let cur_line = cur_line - 1;
      }      
    } else {
      let cur_col = cur_col - 1;
    }
    return;
  }
}

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