stmt()

in web/jslint/src/main/resources/data/jslint-2020-03-28.js [3365:3465]

• 83 lines of code
• 15 McCabe index (conditional complexity)

stmt("switch", function () {
  var dups = [];
  var last;
  var stmts;
  var the_cases = [];
  var the_disrupt = true;
  var the_switch = token;
  not_top_level(the_switch);

  if (functionage.finally > 0) {
    warn("unexpected_a", the_switch);
  }

  functionage.switch += 1;
  advance("(");
  token.free = true;
  the_switch.expression = expression(0);
  the_switch.block = the_cases;
  advance(")");
  advance("{");

  (function major() {
    var the_case = next_token;
    the_case.arity = "statement";
    the_case.expression = [];

    (function minor() {
      advance("case");
      token.switch = true;
      var exp = expression(0);

      if (dups.some(function (thing) {
        return are_similar(thing, exp);
      })) {
        warn("unexpected_a", exp);
      }

      dups.push(exp);
      the_case.expression.push(exp);
      advance(":");

      if (next_token.id === "case") {
        return minor();
      }
    })();

    stmts = statements();

    if (stmts.length < 1) {
      warn("expected_statements_a");
      return;
    }

    the_case.block = stmts;
    the_cases.push(the_case);
    last = stmts[stmts.length - 1];

    if (last.disrupt) {
      if (last.id === "break" && last.label === undefined) {
        the_disrupt = false;
      }
    } else {
      warn("expected_a_before_b", next_token, "break;", artifact(next_token));
    }

    if (next_token.id === "case") {
      return major();
    }
  })();

  dups = undefined;

  if (next_token.id === "default") {
    var the_default = next_token;
    advance("default");
    token.switch = true;
    advance(":");
    the_switch.else = statements();

    if (the_switch.else.length < 1) {
      warn("unexpected_a", the_default);
      the_disrupt = false;
    } else {
      var the_last = the_switch.else[the_switch.else.length - 1];

      if (the_last.id === "break" && the_last.label === undefined) {
        warn("unexpected_a", the_last);
        the_last.disrupt = false;
      }

      the_disrupt = the_disrupt && the_last.disrupt;
    }
  } else {
    the_disrupt = false;
  }

  advance("}", the_switch);
  functionage.switch -= 1;
  the_switch.disrupt = the_disrupt;
  return the_switch;
});