//: Take raw control of the text-mode display and console, putting it in
//: 'console' mode rather than the usual automatically-scrolling 'typewriter'
//: mode.

//:: Display management

:(before "End Globals")
int Display_row = 0;
int Display_column = 0;
bool Autodisplay = true;

:(before "End Includes")
#define CHECK_SCREEN \
    if (!tb_is_active()) { \
      if (Run_tests) \
        raise << maybe(current_recipe_name()) << "tried to print to real screen in a test!\n" << end(); \
      else \
        raise << maybe(current_recipe_name()) << "tried to print to real screen before 'open-console' or after 'close-console'\n" << end(); \
      break; \
    }
#define CHECK_CONSOLE \
    if (!tb_is_active()) { \
      if (Run_tests) \
        raise << maybe(current_recipe_name()) << "tried to read event from real keyboard/mouse in a test!\n" << end(); \
      else \
        raise << maybe(current_recipe_name()) << "tried to read event from real keyboard/mouse before 'open-console' or after 'close-console'\n" << end(); \
      break; \
    }

:(before "End Primitive Recipe Declarations")
OPEN_CONSOLE,
:(before "End Primitive Recipe Numbers")
put(Recipe_ordinal, "open-console", OPEN_CONSOLE);
:(before "End Primitive Recipe Checks")
case OPEN_CONSOLE: {
  break;
}
:(before "End Primitive Recipe Implementations")
case OPEN_CONSOLE: {
  tb_init();
  Display_row = Display_column = 0;
  int width = tb_width();
  int height = tb_height();
  if (width > 222 || height > 222) tb_shutdown();
  if (width > 222)
    raise << "sorry, Mu doesn't support windows wider than 222 characters in console mode. Please resize your window.\n" << end();
  if (height > 222)
    raise << "sorry, Mu doesn't support windows taller than 222 characters in console mode. Please resize your window.\n" << end();
  break;
}

:(before "End Primitive Recipe Declarations")
CLOSE_CONSOLE,
:(before "End Primitive Recipe Numbers")
put(Recipe_ordinal, "close-console", CLOSE_CONSOLE);
:(before "End Primitive Recipe Checks")
case CLOSE_CONSOLE: {
  break;
}
:(before "End Primitive Recipe Implementations")
case CLOSE_CONSOLE: {
  tb_shutdown();
  break;
}

:(before "End Teardown")
tb_shutdown();

:(before "End Primitive Recipe Declarations")
CLEAR_DISPLAY,
:(before "End Primitive Recipe Numbers")
put(Recipe_ordinal, "clear-display", CLEAR_DISPLAY);
:(before "End Primitive Recipe Checks")
case CLEAR_DISPLAY: {
  break;
}
:(before "End Primitive Recipe Implementations")
case CLEAR_DISPLAY: {
  CHECK_SCREEN;
  tb_clear();
  Display_row = Display_column = 0;
  break;
}

:(before "End Primitive Recipe Declarations")
SYNC_DISPLAY,
:(before "End Primitive Recipe Numbers")
put(Recipe_ordinal, "sync-display", SYNC_DISPLAY);
:(before "End Primitive Recipe Checks")
case SYNC_DISPLAY: {
  break;
}
:(before "End Primitive Recipe Implementations")
case SYNC_DISPLAY: {
  CHECK_SCREEN;
  tb_sync();
  break;
}

:(before "End Primitive Recipe Declarations")
CLEAR_LINE_ON_DISPLAY,
:(before "End Primitive Recipe Numbers")
put(Recipe_ordinal, "clear-line-on-display", CLEAR_LINE_ON_DISPLAY);
:(before "End Primitive Recipe Checks")
case CLEAR_LINE_ON_DISPLAY: {
  break;
}
:(before "End Primitive Recipe Implementations")
case CLEAR_LINE_ON_DISPLAY: {
  CHECK_SCREEN;
  int width = tb_width();
  for (int x = Display_column;  x < width;  ++x) {
    tb_change_cell(x, Display_row, ' ', TB_WHITE, TB_BLACK);
  }
  tb_set_cursor(Display_column, Display_row);
  if (Autodisplay) tb_present();
  break;
}

:(before "End Primitive Recipe Declarations")
PRINT_CHARACTER_TO_DISPLAY,
:(before "End Primitive Recipe Numbers")
put(Recipe_ordinal, "print-character-to-display", PRINT_CHARACTER_TO_DISPLAY);
:(before "End Primitive Recipe Checks")
case PRINT_CHARACTER_TO_DISPLAY: {
  if (inst.ingredients.empty()) {
    raise << maybe(get(Recipe, r).name) << "'print-character-to-display' requires at least one ingredient, but got '" << inst.original_string << "'\n" << end();
    break;
  }
  if (!is_mu_number(inst.ingredients.at(0))) {
    raise << maybe(get(Recipe, r).name) << "first ingredient of 'print-character-to-display' should be a character, but got '" << inst.ingredients.at(0).original_string << "'\n" << end();
    break;
  }
  if (SIZE(inst.ingredients) > 1) {
    if (!is_mu_number(inst.ingredients.at(1))) {
      raise << maybe(get(Recipe, r).name) << "second ingredient of 'print-character-to-display' should be a foreground color number, but got '" << inst.ingredients.at(1).original_string << "'\n" << end();
      break;
    }
  }
  if (SIZE(inst.ingredients) > 2) {
    if (!is_mu_number(inst.ingredients.at(2))) {
      raise << maybe(get(Recipe, r).name) << "third ingredient of 'print-character-to-display' should be a background color number, but got '" << inst.ingredients.at(2).original_string << "'\n" << end();
      break;
    }
  }
  break;
}
:(before "End Primitive Recipe Implementations")
case PRINT_CHARACTER_TO_DISPLAY: {
  CHECK_SCREEN;
  int h=tb_height(), w=tb_width();
  int height = (h >= 0) ? h : 0;
  int width = (w >= 0) ? w : 0;
  int c = ingredients.at(0).at(0);
  int color = TB_BLACK;
  if (SIZE(ingredients) > 1) {
    color = ingredients.at(1).at(0);
  }
  int bg_color = TB_BLACK;
  if (SIZE(ingredients) > 2) {
    bg_color = ingredients.at(2).at(0);
    if (bg_color == 0) bg_color = TB_BLACK;
  }
  tb_change_cell(Display_column, Display_row, c, color, bg_color);
  if (c == '\n' || c == '\r') {
    if (Display_row < height-1) {
      Display_column = 0;
      ++Display_row;
      tb_set_cursor(Display_column, Display_row);
      if (Autodisplay) tb_present();
    }
    break;
  }
  if (c == '\b') {
    if (Display_column > 0) {
      tb_change_cell(Display_column-1, Display_row, ' ', color, bg_color);
      --Display_column;
      tb_set_cursor(Display_column, Display_row);
      if (Autodisplay) tb_present();
    }
    break;
  }
  if (Display_column < width-1) {
    ++Display_column;
    tb_set_cursor(Display_column, Display_row);
  }
  if (Autodisplay) tb_present();
  break;
}

:(before "End Primitive Recipe Declarations")
CURSOR_POSITION_ON_DISPLAY,
:(before "End Primitive Recipe Numbers")
put(Recipe_ordinal, "cursor-position-on-display", CURSOR_POSITION_ON_DISPLAY);
:(before "End Primitive Recipe Checks")
case CURSOR_POSITION_ON_DISPLAY: {
  break;
}
:(before "End Primitive Recipe Implementations")
case CURSOR_POSITION_ON_DISPLAY: {
  CHECK_SCREEN;
  products.resize(2);
  products.at(0).push_back(Display_row);
  products.at(1).push_back(Display_column);
  break;
}

:(before "End Primitive Recipe Declarations")
MOVE_CURSOR_ON_DISPLAY,
:(before "End Primitive Recipe Numbers")
put(Recipe_ordinal, "move-cursor-on-display", MOVE_CURSOR_ON_DISPLAY);
:(before "End Primitive Recipe Checks")
case MOVE_CURSOR_ON_DISPLAY: {
  if (SIZE(inst.ingredients) != 2) {
    raise << maybe(get(Recipe, r).name) << "'move-cursor-on-display' requires two ingredients, but got '" << inst.original_string << "'\n" << end();
    break;
  }
  if (!is_mu_number(inst.ingredients.at(0))) {
    raise << maybe(get(Recipe, r).name) << "first ingredient of 'move-cursor-on-display' should be a row number, but got '" << inst.ingredients.at(0).original_string << "'\n" << end();
    break;
  }
  if (!is_mu_number(inst.ingredients.at(1))) {
    raise << maybe(get(Recipe, r).name) << "second ingredient of 'move-cursor-on-display' should be a column number, but got '" << inst.ingredients.at(1).original_string << "'\n" << end();
    break;
  }pre { line-height: 125%; }
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
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<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<title>Mu - continuation5.mu</title>
<meta name="Generator" content="Vim/8.0">
<meta name="plugin-version" content="vim7.4_v2">
<meta name="syntax" content="none">
<meta name="settings" content="number_lines,use_css,pre_wrap,no_foldcolumn,expand_tabs,line_ids,prevent_copy=">
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<pre id='vimCodeElement'>
<span id="L1" class="LineNr"> 1 </span><span class="Comment"># Example program showing that a 'paused' continuation can be 'resumed' with</span>
<span id="L2" class="LineNr"> 2 </span><span class="Comment"># inputs.</span>
<span id="L3" class="LineNr"> 3 </span><span class="Comment">#</span>
<span id="L4" class="LineNr"> 4 </span><span class="Comment"># Print out a list of numbers, first adding 0 to the first, 1 to the second, 2</span>
<span id="L5" class="LineNr"> 5 </span><span class="Comment"># to the third, and so on.</span>
<span id="L6" class="LineNr"> 6 </span><span class="Comment">#</span>
<span id="L7" class="LineNr"> 7 </span><span class="Comment"># To run:</span>
<span id="L8" class="LineNr"> 8 </span><span class="Comment">#   $ git clone <a href="https://github.com/akkartik/mu">https://github.com/akkartik/mu</a></span>
<span id="L9" class="LineNr"> 9 </span><span class="Comment">#   $ cd mu</span>
<span id="L10" class="LineNr">10 </span><span class="Comment">#   $ ./mu continuation5.mu</span>
<span id="L11" class="LineNr">11 </span><span class="Comment">#</span>
<span id="L12" class="LineNr">12 </span><span class="Comment"># Expected output:</span>
<span id="L13" class="LineNr">13 </span><span class="Comment">#   1</span>
<span id="L14" class="LineNr">14 </span><span class="Comment">#   3</span>
<span id="L15" class="LineNr">15 </span><span class="Comment">#   5</span>
<span id="L16" class="LineNr">16 </span>
<span id="L17" class="LineNr">17 </span><span class="muRecipe">def</span> <a href='continuation5.mu.html#L17'>main</a> [
<span id="L18" class="LineNr">18 </span>  <span class="Constant">local-scope</span>
<span id="L19" class="LineNr">19 </span>  l:&amp;:<a href='064list.mu.html#L6'>list</a>:num <span class="Special">&lt;-</span> copy<span class="Constant"> 0</span>
<span id="L20" class="LineNr">20 </span>  l <span class="Special">&lt;-</span> push<span class="Constant"> 3</span>, l
<span id="L21" class="LineNr">21 </span>  l <span class="Special">&lt;-</span> push<span class="Constant"> 2</span>, l
<span id="L22" class="LineNr">22 </span>  l <span class="Special">&lt;-</span> push<span class="Constant"> 1</span>, l
<span id="L23" class="LineNr">23 </span>  k:continuation, x:num, done?:bool <span class="Special">&lt;-</span> <span class="muControl">call-with-continuation-mark</span> <span class="Constant">100/mark</span>, <a href='continuation5.mu.html#L34'>create-yielder</a>, l
<span id="L24" class="LineNr">24 </span>  a:num <span class="Special">&lt;-</span> copy<span class="Constant"> 1</span>
<span id="L25" class="LineNr">25 </span>  <span class="Delimiter">{</span>
<span id="L26" class="LineNr">26 </span>    <span class="muControl">break-if</span> done?
<span id="L27" class