generated by cgit-pink 1.4.1-2-gfad0 (git 2.36.2.497.gbbea4dcf42) at 2025-04-11 18:02:10 +0000
 



.highlight .nd { color: #555555 } /* Name.Decorator */
.highlight .ne { color: #bb0066; font-weight: bold } /* Name.Exception */
.highlight .nf { color: #0066bb; font-weight: bold } /* Name.Function */
.highlight .nl { color: #336699; font-style: italic } /* Name.Label */
.highlight .nn { color: #bb0066; font-weight: bold } /* Name.Namespace */
.highlight .py { color: #336699; font-weight: bold } /* Name.Property */
.highlight .nt { color: #bb0066; font-weight: bold } /* Name.Tag */
.highlight .nv { color: #336699 } /* Name.Variable */
.highlight .ow { color: #008800 } /* Operator.Word */
.highlight .w { color: #bbbbbb } /* Text.Whitespace */
.highlight .mb { color: #0000DD; font-weight: bold } /* Literal.Number.Bin */
.highlight .mf { color: #0000DD; font-weight: bold } /* Literal.Number.Float */
.highlight .mh { color: #0000DD; font-weight: bold } /* Literal.Number.Hex */
.highlight .mi { color: #0000DD; font-weight: bold } /* Literal.Number.Integer */
.highlight .mo { color: #0000DD; font-weight: bold } /* Literal.Number.Oct */
.highlight .sa { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Affix */
.highlight .sb { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Backtick */
.highlight .sc { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Char */
.highlight .dl { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Delimiter */
.highlight .sd { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Doc */
.highlight .s2 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Double */
.highlight .se { color: #0044dd; background-color: #fff0f0 } /* Literal.String.Escape */
.highlight .sh { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Heredoc */
.highlight .si { color: #3333bb; background-color: #fff0f0 } /* Literal.String.Interpol */
.highlight .sx { color: #22bb22; background-color: #f0fff0 } /* Literal.String.Other */
.highlight .sr { color: #008800; background-color: #fff0ff } /* Literal.String.Regex */
.highlight .s1 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Single */
.highlight .ss { color: #aa6600; background-color: #fff0f0 } /* Literal.String.Symbol */
.highlight .bp { color: #003388 } /* Name.Builtin.Pseudo */
.highlight .fm { color: #0066bb; font-weight: bold } /* Name.Function.Magic */
.highlight .vc { color: #336699 } /* Name.Variable.Class */
.highlight .vg { color: #dd7700 } /* Name.Variable.Global */
.highlight .vi { color: #3333bb } /* Name.Variable.Instance */
.highlight .vm { color: #336699 } /* Name.Variable.Magic */
.highlight .il { color: #0000DD; font-weight: bold } /* Literal.Number.Integer.Long */
//: Dead simple persistence.
//:   'restore' - reads string from a file
//:   'save' - writes string to a file

:(before "End Primitive Recipe Declarations")
RESTORE,
:(before "End Primitive Recipe Numbers")
put(Recipe_ordinal, "restore", RESTORE);
:(before "End Primitive Recipe Checks")
case RESTORE: {
  if (SIZE(inst.ingredients) != 1) {
    raise_error << maybe(get(Recipe, r).name) << "'restore' requires exactly one ingredient, but got " << inst.to_string() << '\n' << end();
    break;
  }
  string filename;
  if (is_literal_string(inst.ingredients.at(0))) {
    ;
  }
  else if (is_mu_string(inst.ingredients.at(0))) {
    ;
  }
  else {
    raise_error << maybe(get(Recipe, r).name) << "first ingredient of 'restore' should be a string, but got " << inst.ingredients.at(0).to_string() << '\n' << end();
    break;
  }
  break;
}
:(before "End Primitive Recipe Implementations")
case RESTORE: {
  string filename;
  if (is_literal_string(current_instruction().ingredients.at(0))) {
    filename = current_instruction().ingredients.at(0).name;
  }
  else if (is_mu_string(current_instruction().ingredients.at(0))) {
    filename = read_mu_string(ingredients.at(0).at(0));
  }
  if (Current_scenario) {
    // do nothing in tests
    products.resize(1);
    products.at(0).push_back(0);
    break;
  }
  string contents = slurp("lesson/"+filename);
  products.resize(1);
  if (contents.empty())
    products.at(0).push_back(0);
  else
    products.at(0).push_back(new_mu_string(contents));
  break;
}

:(code)
string slurp(const string& filename) {
  ostringstream result;
  ifstream fin(filename.c_str());
  fin.peek();
  if (!fin) return result.str();  // don't bother checking errno
  const int N = 1024;
  char buf[N];
  while (!fin.eof()) {
    bzero(buf, N);
    fin.read(buf, N-1);  // leave at least one null
    result << buf;
  }
  fin.close();
  return result.str();
}

:(before "End Primitive Recipe Declarations")
SAVE,
:(before "End Primitive Recipe Numbers")
put(Recipe_ordinal, "save", SAVE);
:(before "End Primitive Recipe Checks")
case SAVE: {
  if (SIZE(inst.ingredients) != 2) {
    raise_error << maybe(get(Recipe, r).name) << "'save' requires exactly two ingredients, but got " << inst.to_string() << '\n' << end();
    break;
  }
  if (is_literal_string(inst.ingredients.at(0))) {
    ;
  }
  else if (is_mu_string(inst.ingredients.at(0))) {
    ;
  }
  else {
    raise_error << maybe(get(Recipe, r).name) << "first ingredient of 'save' should be a string, but got " << inst.ingredients.at(0).to_string() << '\n' << end();
    break;
  }
  if (!is_mu_string(inst.ingredients.at(1))) {
    raise_error << maybe(get(Recipe, r).name) << "second ingredient of 'save' should be an address:array:character, but got " << inst.ingredients.at(1).to_string() << '\n' << end();
    break;
  }
  break;
}
:(before "End Primitive Recipe Implementations")
case SAVE: {
  if (Current_scenario) break;  // do nothing in tests
  string filename;
  if (is_literal_string(current_instruction().ingredients.at(0))) {
    filename = current_instruction().ingredients.at(0).name;
  }
  else if (is_mu_string(current_instruction().ingredients.at(0))) {
    filename = read_mu_string(ingredients.at(0).at(0));
  }
  ofstream fout(("lesson/"+filename).c_str());
  string contents = read_mu_string(ingredients.at(1).at(0));
  fout << contents;
  fout.close();
  if (!exists("lesson/.git")) break;
  // bug in git: git diff -q messes up --exit-code
  // explicitly say '--all' for git 1.9
  int status = system("cd lesson; git add --all .; git diff HEAD --exit-code >/dev/null || git commit -a -m . >/dev/null");
  if (status != 0)
    raise_error << "error in commit: contents " << contents << '\n' << end();
  break;
}

:(code)
bool exists(const string& filename) {
  struct stat dummy;
  return 0 == stat(filename.c_str(), &dummy);
}