1 /*

     2 * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description: 

    15 *

    16 */

    17 #include <functional>

    18 #include <memory>

    19 #include <vector>

    20 #include <algorithm>

    21 

    22 #include "cppunit/cppunit_proxy.h"

    23 

    24 #if !defined (STLPORT) || defined(_STLP_USE_NAMESPACES)

    25 using namespace std;

    26 #endif

    27 

    28 //

    29 // TestCase class

    30 //

    31 class MemFunPtrTest : public CPPUNIT_NS::TestCase

    32 {

    33   CPPUNIT_TEST_SUITE(MemFunPtrTest);

    34   CPPUNIT_TEST(mem_ptr_fun);

    35 #if defined (STLPORT) && !defined (_STLP_CLASS_PARTIAL_SPECIALIZATION)

    36   //This test require partial template specialization feature to avoid the

    37   //reference to reference problem. No workaround yet for limited compilers.

    38   CPPUNIT_IGNORE;

    39 #endif

    40   CPPUNIT_TEST(find);

    41   CPPUNIT_TEST_SUITE_END();

    42 

    43 protected:

    44   // compile test not neccessary to run but...

    45   void mem_ptr_fun();

    46   void find();

    47 };

    48 

    49 CPPUNIT_TEST_SUITE_REGISTRATION(MemFunPtrTest);

    50 

    51 #if defined(_STLP_DONT_RETURN_VOID) && (defined(_STLP_NO_MEMBER_TEMPLATE_CLASSES) && defined(_STLP_NO_CLASS_PARTIAL_SPECIALIZATION))

    52 #  define _STLP_DONT_TEST_RETURN_VOID

    53 #endif

    54 //else there is no workaround for the return void bug

    55 

    56 struct S1 { } s1;

    57 struct S2 { } s2;

    58 

    59 int f1(S1&);

    60 int f2(S1&, S2&);

    61 int f1c(const S1&);

    62 int f2c(const S1&, const S2&);

    63 

    64 void vf1(S1&);

    65 void vf2(S1&, S2&);

    66 void vf1c(const S1&);

    67 void vf2c(const S1&, const S2&);

    68 

    69 class Class {

    70 public:

    71   int f0();

    72   int f1(const S1&);

    73 

    74   void vf0();

    75   void vf1(const S1&);

    76 

    77   int f0c() const;

    78   int f1c(const S1&) const;

    79 

    80   void vf0c() const;

    81   void vf1c(const S1&) const;

    82 };

    83 

    84 //

    85 // tests implementation

    86 //

    87 void MemFunPtrTest::mem_ptr_fun()

    88 {

    89   Class obj;

    90   const Class& objc = obj;

    91 

    92   // ptr_fun

    93 

    94   ptr_fun(f1)(s1);

    95   ptr_fun(f2)(s1, s2);

    96 

    97   ptr_fun(f1c)(s1);

    98   ptr_fun(f2c)(s1, s2);

    99 

   100 #ifndef _STLP_DONT_TEST_RETURN_VOID

   101   ptr_fun(vf1)(s1);

   102   ptr_fun(vf2)(s1, s2);

   103 

   104   ptr_fun(vf1c)(s1);

   105   ptr_fun(vf2c)(s1, s2);

   106 #endif /* _STLP_DONT_TEST_RETURN_VOID */

   107 

   108   // mem_fun

   109 

   110   mem_fun(&Class::f0)(&obj);

   111   mem_fun(&Class::f1)(&obj, s1);

   112 

   113 #ifndef _STLP_DONT_TEST_RETURN_VOID

   114   mem_fun(&Class::vf0)(&obj);

   115   mem_fun(&Class::vf1)(&obj, s1);

   116 #endif /* _STLP_DONT_TEST_RETURN_VOID */

   117 

   118   // mem_fun (const)

   119 

   120   mem_fun(&Class::f0c)(&objc);

   121   mem_fun(&Class::f1c)(&objc, s1);

   122 

   123 #ifndef _STLP_DONT_TEST_RETURN_VOID

   124   mem_fun(&Class::vf0c)(&objc);

   125   mem_fun(&Class::vf1c)(&objc, s1);

   126 #endif /* _STLP_DONT_TEST_RETURN_VOID */

   127 

   128   // mem_fun_ref

   129 

   130   mem_fun_ref(&Class::f0)(obj);

   131   mem_fun_ref(&Class::f1)(obj, s1);

   132 

   133 #ifndef _STLP_DONT_TEST_RETURN_VOID

   134   mem_fun_ref(&Class::vf0)(obj);

   135   mem_fun_ref(&Class::vf1)(obj, s1);

   136 #endif /* _STLP_DONT_TEST_RETURN_VOID */

   137 

   138   // mem_fun_ref (const)

   139   mem_fun_ref(&Class::f0c)(objc);

   140   mem_fun_ref(&Class::f1c)(objc, s1);

   141 

   142 #ifndef _STLP_DONT_TEST_RETURN_VOID

   143   mem_fun_ref(&Class::vf0c)(objc);

   144   mem_fun_ref(&Class::vf1c)(objc, s1);

   145 #endif /* _STLP_DONT_TEST_RETURN_VOID */

   146 }

   147 int f1(S1&)

   148 {return 1;}

   149 

   150 int f2(S1&, S2&)

   151 {return 2;}

   152 

   153 int f1c(const S1&)

   154 {return 1;}

   155 

   156 int f2c(const S1&, const S2&)

   157 {return 2;}

   158 

   159 void vf1(S1&)

   160 {}

   161 

   162 void vf2(S1&, S2&)

   163 {}

   164 

   165 void vf1c(const S1&)

   166 {}

   167 

   168 void vf2c(const S1&, const S2&)

   169 {}

   170 

   171 int Class::f0()

   172 {return 0;}

   173 

   174 int Class::f1(const S1&)

   175 {return 1;}

   176 

   177 void Class::vf0()

   178 {}

   179 

   180 void Class::vf1(const S1&)

   181 {}

   182 

   183 int Class::f0c() const

   184 {return 0;}

   185 

   186 int Class::f1c(const S1&) const

   187 {return 1;}

   188 

   189 void Class::vf0c() const

   190 {}

   191 

   192 void Class::vf1c(const S1&) const

   193 {}

   194 

   195 struct V {

   196   public:

   197     V(int _v) :

   198       v(_v)

   199     { }

   200 

   201   bool f( int _v ) const { return (v == _v); }

   202 

   203   int v;

   204 #if defined (__DMC__)

   205   V(){}

   206 #endif

   207 };

   208 

   209 void MemFunPtrTest::find()

   210 {

   211 #if !defined (STLPORT) || defined (_STLP_CLASS_PARTIAL_SPECIALIZATION)

   212   vector<V> v;

   213 

   214   v.push_back( V(1) );

   215   v.push_back( V(2) );

   216   v.push_back( V(3) );

   217 

   218   // step-by-step complication of work for compiler:

   219 

   220   // step 1:

   221   const_mem_fun1_ref_t<bool,V,int> pmf = mem_fun_ref( &V::f );

   222   binder2nd<const_mem_fun1_ref_t<bool,V,int> > b(pmf, 2);

   223   vector<V>::iterator i = find_if( v.begin(), v.end(), b );

   224   CPPUNIT_ASSERT(i != v.end());

   225   CPPUNIT_ASSERT(i->v == 2);

   226 

   227   // step 2, just check that compiler understand what pass to bind2nd:

   228   binder2nd<const_mem_fun1_ref_t<bool,V,int> > b2 = bind2nd( pmf, 2 );

   229 

   230   // step 3, the same as step 1, but more intellect from compiler required:

   231   binder2nd<const_mem_fun1_ref_t<bool,V,int> > b3 = bind2nd( mem_fun_ref( &V::f ), 2 );

   232 

   233   vector<V>::iterator j = find_if( v.begin(), v.end(), b3 );

   234   CPPUNIT_ASSERT(j != v.end());

   235   CPPUNIT_ASSERT(j->v == 2);

   236 

   237   // step 4, more brief, more complex:

   238   vector<V>::iterator k = find_if( v.begin(), v.end(), bind2nd( mem_fun_ref( &V::f ), 2 ) );

   239   CPPUNIT_ASSERT(k != v.end());

   240   CPPUNIT_ASSERT(k->v == 2);

   241 #endif

   242 }

   243 

   244 #ifdef _STLP_DONT_TEST_RETURN_VOID

   245 #  undef _STLP_DONT_TEST_RETURN_VOID

   246 #endif