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      1 /**
      2  * Implementation of dynamic array property support routines.
      3  *
      4  * Copyright: Copyright Digital Mars 2000 - 2015.
      5  * License: Distributed under the
      6  *      $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost Software License 1.0).
      7  *    (See accompanying file LICENSE)
      8  * Authors:   Walter Bright
      9  * Source: $(DRUNTIMESRC rt/_adi.d)
     10  */
     11 
     12 module rt.adi;
     13 
     14 //debug=adi;            // uncomment to turn on debugging printf's
     15 
     16 private
     17 {
     18     debug(adi) import core.stdc.stdio;
     19 }
     20 
     21 /***************************************
     22  * Support for array equality test.
     23  * Returns:
     24  *      1       equal
     25  *      0       not equal
     26  */
     27 
     28 extern (C) int _adEq2(void[] a1, void[] a2, TypeInfo ti)
     29 {
     30     debug(adi) printf("_adEq2(a1.length = %d, a2.length = %d)\n", a1.length, a2.length);
     31     if (a1.length != a2.length)
     32         return 0;               // not equal
     33     if (!ti.equals(&a1, &a2))
     34         return 0;
     35     return 1;
     36 }
     37 
     38 @safe unittest
     39 {
     40     debug(adi) printf("array.Eq unittest\n");
     41 
     42     struct S(T) { T val; }
     43     alias String = S!string;
     44     alias Float = S!float;
     45 
     46     String[1] a = [String("hello"c)];
     47 
     48     assert(a != [String("hel")]);
     49     assert(a != [String("helloo")]);
     50     assert(a != [String("betty")]);
     51     assert(a == [String("hello")]);
     52     assert(a != [String("hxxxx")]);
     53 
     54     Float[1] fa = [Float(float.nan)];
     55     assert(fa != fa);
     56 }
     57 
     58 unittest
     59 {
     60     debug(adi) printf("struct.Eq unittest\n");
     61 
     62     static struct TestStruct
     63     {
     64         int value;
     65 
     66         bool opEquals(const TestStruct rhs) const
     67         {
     68             return value == rhs.value;
     69         }
     70     }
     71 
     72     TestStruct[] b = [TestStruct(5)];
     73     TestStruct[] c = [TestStruct(6)];
     74     assert(_adEq2(*cast(void[]*)&b, *cast(void[]*)&c, typeid(TestStruct[])) == false);
     75     assert(_adEq2(*cast(void[]*)&b, *cast(void[]*)&b, typeid(TestStruct[])) == true);
     76 }
     77