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289 lines
5.6 KiB
C++
289 lines
5.6 KiB
C++
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// Copyright (C) 2000 Free Software Foundation
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 2, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING. If not, write to the Free
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// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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// USA.
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// 20.4.5 Template class auto_ptr [lib.auto.ptr]
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#include <memory>
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#ifdef DEBUG_ASSERT
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# include <assert.h>
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#endif
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struct A
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{
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A() { ++ctor_count; }
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virtual ~A() { ++dtor_count; }
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static long ctor_count;
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static long dtor_count;
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};
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long A::ctor_count = 0;
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long A::dtor_count = 0;
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struct B : A
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{
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B() { ++ctor_count; }
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virtual ~B() { ++dtor_count; }
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static long ctor_count;
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static long dtor_count;
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};
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long B::ctor_count = 0;
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long B::dtor_count = 0;
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struct reset_count_struct
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{
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~reset_count_struct()
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{
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A::ctor_count = 0;
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A::dtor_count = 0;
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B::ctor_count = 0;
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B::dtor_count = 0;
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}
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};
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// 20.4.5.1 auto_ptr constructors [lib.auto.ptr.cons]
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// Construction from pointer
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bool test01()
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{
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reset_count_struct reset;
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bool test = true;
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std::auto_ptr<A> A_default;
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test &= A_default.get() == 0;
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test &= A::ctor_count == 0;
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test &= A::dtor_count == 0;
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test &= B::ctor_count == 0;
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test &= B::dtor_count == 0;
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std::auto_ptr<A> A_from_A(new A);
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test &= A_from_A.get() != 0;
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test &= A::ctor_count == 1;
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test &= A::dtor_count == 0;
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test &= B::ctor_count == 0;
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test &= B::dtor_count == 0;
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std::auto_ptr<A> A_from_B(new B);
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test &= A_from_B.get() != 0;
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test &= A::ctor_count == 2;
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test &= A::dtor_count == 0;
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test &= B::ctor_count == 1;
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test &= B::dtor_count == 0;
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#ifdef DEBUG_ASSERT
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assert(test);
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#endif
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return test;
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}
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// Construction from std::auto_ptr
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bool test02()
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{
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reset_count_struct reset;
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bool test = true;
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std::auto_ptr<A> A_from_A(new A);
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std::auto_ptr<B> B_from_B(new B);
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std::auto_ptr<A> A_from_ptr_A(A_from_A);
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std::auto_ptr<A> A_from_ptr_B(B_from_B);
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test &= A_from_A.get() == 0;
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test &= B_from_B.get() == 0;
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test &= A_from_ptr_A.get() != 0;
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test &= A_from_ptr_B.get() != 0;
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test &= A::ctor_count == 2;
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test &= A::dtor_count == 0;
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test &= B::ctor_count == 1;
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test &= B::dtor_count == 0;
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#ifdef DEBUG_ASSERT
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assert(test);
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#endif
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return test;
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}
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// Assignment from std::auto_ptr
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bool test03()
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{
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reset_count_struct reset;
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bool test = true;
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std::auto_ptr<A> A_from_ptr_A;
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std::auto_ptr<A> A_from_ptr_B;
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std::auto_ptr<A> A_from_A(new A);
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std::auto_ptr<B> B_from_B(new B);
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A_from_ptr_A = A_from_A;
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A_from_ptr_B = B_from_B;
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test &= A_from_A.get() == 0;
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test &= B_from_B.get() == 0;
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test &= A_from_ptr_A.get() != 0;
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test &= A_from_ptr_B.get() != 0;
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test &= A::ctor_count == 2;
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test &= A::dtor_count == 0;
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test &= B::ctor_count == 1;
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test &= B::dtor_count == 0;
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#ifdef DEBUG_ASSERT
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assert(test);
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#endif
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return test;
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}
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// Destruction
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bool test04()
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{
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reset_count_struct reset;
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bool test = true;
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{/*lifetine scope*/
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std::auto_ptr<A> A_from_A(new A);
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std::auto_ptr<A> A_from_B(new B);
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std::auto_ptr<B> B_from_B(new B);
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}/*destructors called here*/
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test &= A::ctor_count == 3;
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test &= A::dtor_count == 3;
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test &= B::ctor_count == 2;
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test &= B::dtor_count == 2;
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#ifdef DEBUG_ASSERT
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assert(test);
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#endif
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return test;
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}
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// Class member construction/destruction
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template <typename T>
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class pimpl
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{
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public:
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pimpl() : p_impl(new T) {}
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private:
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std::auto_ptr<T> p_impl;
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};
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bool test05()
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{
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bool test = true;
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reset_count_struct reset;
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pimpl<A>();
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pimpl<B>();
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test &= A::ctor_count == 2;
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test &= A::dtor_count == 2;
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test &= B::ctor_count == 1;
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test &= B::dtor_count == 1;
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#ifdef DEBUG_ASSERT
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assert(test);
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#endif
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return test;
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}
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// 20.4.5.2 auto_ptr members [lib.auto.ptr.members]
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// Member access
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bool test06()
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{
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reset_count_struct reset;
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bool test = true;
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std::auto_ptr<A> A_from_A(new A);
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std::auto_ptr<A> A_from_A_ptr(A_from_A.release());
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test &= A_from_A.get() == 0;
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test &= A_from_A_ptr.get() != 0;
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test &= A_from_A->ctor_count == 1;
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test &= (*A_from_A).dtor_count == 0;
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A* A_ptr = A_from_A_ptr.get();
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A_from_A_ptr.reset(A_ptr);
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test &= A_from_A_ptr.get() == A_ptr;
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test &= A_from_A_ptr->ctor_count == 1;
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test &= (*A_from_A_ptr).dtor_count == 0;
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A_from_A_ptr.reset(new A);
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test &= A_from_A_ptr.get() != A_ptr;
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test &= A_from_A_ptr->ctor_count == 2;
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test &= (*A_from_A_ptr).dtor_count == 1;
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#ifdef DEBUG_ASSERT
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assert(test);
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#endif
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return test;
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}
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// 20.4.5.3 auto_ptr conversions [lib.auto.ptr.conv]
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// Parameters and return values
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template <typename T>
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static std::auto_ptr<T> source()
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{
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return std::auto_ptr<T>(new T);
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}
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template <typename T>
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static void drain(std::auto_ptr<T>)
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{}
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bool test07()
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{
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bool test = true;
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reset_count_struct reset;
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drain(source<A>());
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drain<A>(source<B>());
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drain(source<B>());
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test &= A::ctor_count == 3;
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test &= A::dtor_count == 3;
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test &= B::ctor_count == 2;
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test &= B::dtor_count == 2;
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#ifdef DEBUG_ASSERT
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assert(test);
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#endif
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return test;
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}
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int main()
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{
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bool test = true;
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test &= test01();
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test &= test02();
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test &= test03();
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test &= test04();
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test &= test05();
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test &= test06();
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test &= test07();
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return test ? 0 : 1;
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}
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