Language/12_Expressions/01_Constants_A13_t06.dart

/*
 * Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 * for details. All rights reserved. Use of this source code is governed by a
 * BSD-style license that can be found in the LICENSE file.
 */
/**
 * @assertion An expression of one of the forms -e, e1 - e2, e1 * e2,  e1 / e2, e1 ~/ e2, e1 > e2, e1 < e2,
 * e1 >= e2, e1 <= e2 or e1 % e2, where e1 and e2 are constant expressions
 * that evaluate to a numeric value or to null is a constant expression.
 * @description Checks that various expressions of the specified forms can be used within
 * the initializer list of a constant constructor and are, therefore, constant expressions.
 * @author iefremov
 * @reviewer rodionov
 */

class C {
  const C() :
    a = -1,
    b = -0,
    c = -100500,
    d = -999999999999999999999999,
    e = -9182319.12394,
    f = -3.14,
    g = -(0.0/0.0),
    h = -(1.0/0.0),
    i = -0.0,

    j = 1 - 2e0,
    k = 1 * 2E-0,
    l = 1 / 2,
    m = 1 > 2,
    n = 1 < 2,
    o = 1 >= 2,
    p = 1 <= 2,
    q = 1 % 2,

    r = 1.42 - 2,
    s = 1.42 * 2,
    t = 1.42 / 2,
    u = 1.42 > 2,
    v = 1.42 < 2,
    w = 1.42 >= 2,
    x = 1.42 <= 2,
    y = 1.42 % 2,

    z = 1 - 2.42,
    aa = 1 * 2.42,
    ab = 1 / 2.42,
    ac = 1 > 2.42,
    ad = 1 < 2.42,
    ae = 1 >= 2.42,
    af = 1 <= 2.42,
    ag = 1 % 2.42,

    ah = 1.42 - 2.42,
    ai = 1.42 * 2.42,
    aj = 1.42 / 2.42,
    ak = 1.42 > 2.42,
    al = 1.42 < 2.42,
    am = 1.42 >= 2.42,
    an = 1.42 <= 2.42,
    ao = 1.42 % 2.42,

    ap = 1.42 ~/ 1.42,
    aq = 5 ~/ 1,
    ar = 0.2 ~/ 2,
    as = 1 ~/ (2 + 1);
        
    final a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y, z,
      aa, ab, ac, ad, ae, af, ag, ah, ai, aj, ak, al, am, an, ao, ap, aq, ar, as;
}


main() {
  try {
    const C();
  } catch(ok) {} // NPEs and whatnot
}