3b31e3dc78
git-svn-id: svn://svn.code.sf.net/p/loki-lib/code/trunk@664 7ec92016-0320-0410-acc4-a06ded1c099a
814 lines
16 KiB
C++
Executable file
814 lines
16 KiB
C++
Executable file
// Boost.Function library
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// Copyright Douglas Gregor 2001-2003. Use, modification and
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// distribution is subject to the Boost Software License, Version
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// 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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// For more information, see http://www.boost.org
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#include <functional>
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#include <cassert>
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#include <string>
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#include <utility>
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//***********************************************************
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//#include <boost/test/minimal.hpp>
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#include <iostream>
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#define BOOST_CHECK(exp) \
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( (exp) \
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? static_cast<void>(0) \
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: report_error(#exp,__FILE__,__LINE__) )
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#define BOOST_ERROR(x) std::cout << x << "\n"
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inline void
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report_error( const char* msg, const char* file, int line, bool is_msg = false )
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{
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std::cout << file << "(" << line << "): ";
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if( is_msg )
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std::cout << msg;
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else
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std::cout << "test " << msg << " failed";
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std::cout << std::endl;
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}
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//***********************************************************
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#define TEST_LOKI_FUNCTION
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#ifndef TEST_LOKI_FUNCTION
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#include <boost/function.hpp>
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using namespace boost;
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#else
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#define BOOST_FUNCTION_TARGET_FIX(x) x
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#define LOKI_CLASS_LEVEL_THREADING
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// disable to see "static instantiation order fiasco" crash
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#define LOKI_FUNCTOR_IS_NOT_A_SMALLOBJECT
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#include <loki/Function.h>
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using namespace Loki;
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#define function Function
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#endif
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#ifndef LOKI_FUNCTORS_ARE_COMPARABLE
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using namespace std;
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int global_int;
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struct write_five_obj{void operator()() const {global_int = 5;}};
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#ifndef TEST_LOKI_FUNCTION
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struct write_three_obj{int operator()() const {global_int = 3; return 7;}};
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#else
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struct write_three_obj{void operator()() const {global_int = 3;}};
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#endif
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static void write_five() {global_int = 5;}
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static void write_three() {global_int = 3;}
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struct generate_five_obj {int operator()() const {return 5;}};
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struct generate_three_obj {int operator()() const {return 3;}};
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static int generate_five() {return 5;}
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static int generate_three() {return 3;}
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static string identity_str(const string& s){return s;}
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static string string_cat(const string& s1, const string& s2){return s1+s2;}
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static int sum_ints(int x, int y){return x+y;}
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struct write_const_1_nonconst_2
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{
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void operator()(){global_int = 2;}
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void operator()() const {global_int = 1;}
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};
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struct add_to_obj
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{
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add_to_obj(int v) : value(v) {}
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int operator()(int x) const {return value + x;}
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int value;
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};
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function<void()> static_func(write_five);
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static void test_static_function()
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{
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static_func();
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}
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static void test_zero_args()
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{
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typedef function<void ()> func_void_type;
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write_five_obj five;
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write_three_obj three;
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// Default construction
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func_void_type v1;
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BOOST_CHECK(v1.empty());
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// Assignment to an empty function
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v1 = five;
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BOOST_CHECK(v1 != 0);
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// Invocation of a function
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global_int = 0;
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v1();
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BOOST_CHECK(global_int == 5);
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// clear() method
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v1.clear();
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BOOST_CHECK(v1 == 0);
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// Assignment to an empty function
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v1 = three;
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BOOST_CHECK(!v1.empty());
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// Invocation and self-assignment
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global_int = 0;
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v1 = v1;
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v1();
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BOOST_CHECK(global_int == 3);
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// Assignment to a non-empty function
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v1 = five;
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// Invocation and self-assignment
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global_int = 0;
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v1 = (v1);
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v1();
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BOOST_CHECK(global_int == 5);
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// clear
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v1 = 0;
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BOOST_CHECK(0 == v1);
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// Assignment to an empty function from a free function
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v1 = BOOST_FUNCTION_TARGET_FIX(&) write_five;
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BOOST_CHECK(0 != v1);
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// Invocation
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global_int = 0;
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v1();
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BOOST_CHECK(global_int == 5);
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// Assignment to a non-empty function from a free function
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v1 = BOOST_FUNCTION_TARGET_FIX(&) write_three;
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BOOST_CHECK(!v1.empty());
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// Invocation
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global_int = 0;
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v1();
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BOOST_CHECK(global_int == 3);
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// Assignment
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v1 = five;
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BOOST_CHECK(!v1.empty());
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// Invocation
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global_int = 0;
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v1();
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BOOST_CHECK(global_int == 5);
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// Assignment to a non-empty function from a free function
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v1 = &write_three;
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BOOST_CHECK(!v1.empty());
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// Invocation
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global_int = 0;
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v1();
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BOOST_CHECK(global_int == 3);
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// Construction from another function (that is empty)
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v1.clear();
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func_void_type v2(v1);
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BOOST_CHECK(!v2? true : false);
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// Assignment to an empty function
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v2 = three;
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BOOST_CHECK(!v2.empty());
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// Invocation
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global_int = 0;
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v2();
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BOOST_CHECK(global_int == 3);
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// Assignment to a non-empty function
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v2 = (five);
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// Invocation
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global_int = 0;
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v2();
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BOOST_CHECK(global_int == 5);
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v2.clear();
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BOOST_CHECK(v2.empty());
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// Assignment to an empty function from a free function
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v2 = (BOOST_FUNCTION_TARGET_FIX(&) write_five);
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BOOST_CHECK(v2? true : false);
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// Invocation
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global_int = 0;
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v2();
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BOOST_CHECK(global_int == 5);
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// Assignment to a non-empty function from a free function
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v2 = BOOST_FUNCTION_TARGET_FIX(&) write_three;
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BOOST_CHECK(!v2.empty());
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// Invocation
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global_int = 0;
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v2();
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BOOST_CHECK(global_int == 3);
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// Swapping
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v1 = five;
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swap(v1, v2);
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v2();
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BOOST_CHECK(global_int == 5);
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v1();
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BOOST_CHECK(global_int == 3);
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swap(v1, v2);
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v1.clear();
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// Assignment
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v2 = five;
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BOOST_CHECK(!v2.empty());
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// Invocation
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global_int = 0;
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v2();
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BOOST_CHECK(global_int == 5);
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// Assignment to a non-empty function from a free function
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v2 = &write_three;
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BOOST_CHECK(!v2.empty());
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// Invocation
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global_int = 0;
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v2();
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BOOST_CHECK(global_int == 3);
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// Assignment to a function from an empty function
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v2 = v1;
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BOOST_CHECK(v2.empty());
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// Assignment to a function from a function with a functor
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v1 = three;
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v2 = v1;
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BOOST_CHECK(!v1.empty());
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BOOST_CHECK(!v2.empty());
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// Invocation
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global_int = 0;
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v1();
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BOOST_CHECK(global_int == 3);
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global_int = 0;
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v2();
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BOOST_CHECK(global_int == 3);
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// Assign to a function from a function with a function
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v2 = BOOST_FUNCTION_TARGET_FIX(&) write_five;
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v1 = v2;
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BOOST_CHECK(!v1.empty());
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BOOST_CHECK(!v2.empty());
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global_int = 0;
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v1();
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BOOST_CHECK(global_int == 5);
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global_int = 0;
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v2();
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BOOST_CHECK(global_int == 5);
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// Construct a function given another function containing a function
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func_void_type v3(v1);
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// Invocation of a function
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global_int = 0;
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v3();
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BOOST_CHECK(global_int == 5);
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// clear() method
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v3.clear();
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BOOST_CHECK(!v3? true : false);
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// Assignment to an empty function
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v3 = three;
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BOOST_CHECK(!v3.empty());
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// Invocation
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global_int = 0;
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v3();
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BOOST_CHECK(global_int == 3);
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// Assignment to a non-empty function
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v3 = five;
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// Invocation
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global_int = 0;
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v3();
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BOOST_CHECK(global_int == 5);
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// clear()
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v3.clear();
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BOOST_CHECK(v3.empty());
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// Assignment to an empty function from a free function
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v3 = &write_five;
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BOOST_CHECK(!v3.empty());
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// Invocation
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global_int = 0;
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v3();
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BOOST_CHECK(global_int == 5);
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// Assignment to a non-empty function from a free function
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v3 = &write_three;
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BOOST_CHECK(!v3.empty());
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// Invocation
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global_int = 0;
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v3();
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BOOST_CHECK(global_int == 3);
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// Assignment
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v3 = five;
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BOOST_CHECK(!v3.empty());
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// Invocation
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global_int = 0;
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v3();
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BOOST_CHECK(global_int == 5);
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// Construction of a function from a function containing a functor
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func_void_type v4(v3);
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// Invocation of a function
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global_int = 0;
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v4();
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BOOST_CHECK(global_int == 5);
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// clear() method
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v4.clear();
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BOOST_CHECK(v4.empty());
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// Assignment to an empty function
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v4 = three;
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BOOST_CHECK(!v4.empty());
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// Invocation
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global_int = 0;
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v4();
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BOOST_CHECK(global_int == 3);
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// Assignment to a non-empty function
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v4 = five;
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// Invocation
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global_int = 0;
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v4();
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BOOST_CHECK(global_int == 5);
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// clear()
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v4.clear();
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BOOST_CHECK(v4.empty());
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// Assignment to an empty function from a free function
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v4 = &write_five;
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BOOST_CHECK(!v4.empty());
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// Invocation
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global_int = 0;
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v4();
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BOOST_CHECK(global_int == 5);
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// Assignment to a non-empty function from a free function
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v4 = &write_three;
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BOOST_CHECK(!v4.empty());
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// Invocation
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global_int = 0;
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v4();
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BOOST_CHECK(global_int == 3);
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// Assignment
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v4 = five;
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BOOST_CHECK(!v4.empty());
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// Invocation
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global_int = 0;
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v4();
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BOOST_CHECK(global_int == 5);
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// Construction of a function from a functor
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func_void_type v5(five);
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// Invocation of a function
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global_int = 0;
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v5();
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BOOST_CHECK(global_int == 5);
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// clear() method
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v5.clear();
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BOOST_CHECK(v5.empty());
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// Assignment to an empty function
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v5 = three;
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BOOST_CHECK(!v5.empty());
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// Invocation
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global_int = 0;
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v5();
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BOOST_CHECK(global_int == 3);
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// Assignment to a non-empty function
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v5 = five;
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// Invocation
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global_int = 0;
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v5();
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BOOST_CHECK(global_int == 5);
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// clear()
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v5.clear();
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BOOST_CHECK(v5.empty());
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// Assignment to an empty function from a free function
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v5 = &write_five;
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BOOST_CHECK(!v5.empty());
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// Invocation
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global_int = 0;
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v5();
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BOOST_CHECK(global_int == 5);
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// Assignment to a non-empty function from a free function
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v5 = &write_three;
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BOOST_CHECK(!v5.empty());
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// Invocation
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global_int = 0;
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v5();
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BOOST_CHECK(global_int == 3);
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// Assignment
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v5 = five;
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BOOST_CHECK(!v5.empty());
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// Invocation
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global_int = 0;
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v5();
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BOOST_CHECK(global_int == 5);
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// Construction of a function from a function
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func_void_type v6(&write_five);
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// Invocation of a function
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global_int = 0;
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v6();
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BOOST_CHECK(global_int == 5);
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// clear() method
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v6.clear();
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BOOST_CHECK(v6.empty());
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// Assignment to an empty function
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v6 = three;
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BOOST_CHECK(!v6.empty());
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// Invocation
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global_int = 0;
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v6();
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BOOST_CHECK(global_int == 3);
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// Assignment to a non-empty function
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v6 = five;
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// Invocation
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global_int = 0;
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v6();
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BOOST_CHECK(global_int == 5);
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// clear()
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v6.clear();
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BOOST_CHECK(v6.empty());
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// Assignment to an empty function from a free function
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v6 = &write_five;
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BOOST_CHECK(!v6.empty());
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// Invocation
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global_int = 0;
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v6();
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BOOST_CHECK(global_int == 5);
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// Assignment to a non-empty function from a free function
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v6 = &write_three;
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BOOST_CHECK(!v6.empty());
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// Invocation
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global_int = 0;
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v6();
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BOOST_CHECK(global_int == 3);
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// Assignment
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v6 = five;
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BOOST_CHECK(!v6.empty());
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// Invocation
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global_int = 0;
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v6();
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BOOST_CHECK(global_int == 5);
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// Const vs. non-const
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write_const_1_nonconst_2 one_or_two;
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const function<void ()> v7(one_or_two);
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function<void ()> v8(one_or_two);
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global_int = 0;
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v7();
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BOOST_CHECK(global_int == 2);
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global_int = 0;
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v8();
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BOOST_CHECK(global_int == 2);
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// Test construction from 0 and comparison to 0
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func_void_type v9(0);
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BOOST_CHECK(v9 == 0);
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BOOST_CHECK(0 == v9);
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// Test return values
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typedef function<int ()> func_int_type;
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generate_five_obj gen_five;
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generate_three_obj gen_three;
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func_int_type i0(gen_five);
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BOOST_CHECK(i0() == 5);
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i0 = gen_three;
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BOOST_CHECK(i0() == 3);
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i0 = &generate_five;
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BOOST_CHECK(i0() == 5);
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i0 = &generate_three;
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BOOST_CHECK(i0() == 3);
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BOOST_CHECK(i0? true : false);
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i0.clear();
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BOOST_CHECK(!i0? true : false);
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// Test return values with compatible types
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typedef function<long ()> func_long_type;
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func_long_type i1(gen_five);
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BOOST_CHECK(i1() == 5);
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i1 = gen_three;
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BOOST_CHECK(i1() == 3);
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i1 = &generate_five;
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BOOST_CHECK(i1() == 5);
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i1 = &generate_three;
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BOOST_CHECK(i1() == 3);
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BOOST_CHECK(i1? true : false);
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i1.clear();
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BOOST_CHECK(!i1? true : false);
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}
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static void test_one_arg()
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{
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negate<int> neg;
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function<int (int)> f1(neg);
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BOOST_CHECK(f1(5) == -5);
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function<string (string)> id(&identity_str);
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BOOST_CHECK(id("str") == "str");
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function<string (const char*)> id2(&identity_str);
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BOOST_CHECK(id2("foo") == "foo");
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add_to_obj add_to(5);
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function<int (int)> f2(add_to);
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BOOST_CHECK(f2(3) == 8);
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const function<int (int)> cf2(add_to);
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BOOST_CHECK(cf2(3) == 8);
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}
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static void test_two_args()
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{
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function<string (const string&, const string&)> cat(&string_cat);
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BOOST_CHECK(cat("str", "ing") == "string");
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function<int (short, short)> sum(&sum_ints);
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|
BOOST_CHECK(sum(2, 3) == 5);
|
|
}
|
|
|
|
static void test_emptiness()
|
|
{
|
|
function<float ()> f1;
|
|
BOOST_CHECK(f1.empty());
|
|
|
|
function<float ()> f2;
|
|
f2 = f1;
|
|
BOOST_CHECK(f2.empty());
|
|
|
|
function<double ()> f3;
|
|
f3 = f2;
|
|
BOOST_CHECK(f3.empty());
|
|
}
|
|
|
|
struct X
|
|
{
|
|
X(int v) : value(v)
|
|
{}
|
|
|
|
int twice() const
|
|
{
|
|
return 2*value;
|
|
}
|
|
int plus(int v)
|
|
{
|
|
return value + v;
|
|
}
|
|
|
|
int value;
|
|
};
|
|
|
|
static void test_member_functions()
|
|
{
|
|
#ifndef TEST_LOKI_FUNCTION
|
|
|
|
boost::function<int (X*)> f1(&X::twice);
|
|
|
|
X one(1);
|
|
X five(5);
|
|
|
|
BOOST_CHECK(f1(&one) == 2);
|
|
BOOST_CHECK(f1(&five) == 10);
|
|
|
|
#else
|
|
|
|
X one(1);
|
|
X five(5);
|
|
|
|
Loki::Function<int()> f1(&one,&X::twice);
|
|
BOOST_CHECK(f1() == 2);
|
|
|
|
f1 = Loki::Function<int()>(&five,&X::twice);
|
|
BOOST_CHECK(f1() == 10);
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#ifndef TEST_LOKI_FUNCTION
|
|
|
|
boost::function<int (X*)> f1_2;
|
|
|
|
f1_2 = &X::twice;
|
|
|
|
BOOST_CHECK(f1_2(&one) == 2);
|
|
BOOST_CHECK(f1_2(&five) == 10);
|
|
|
|
#else
|
|
|
|
Loki::Function<int ()> f1_2(&one,&X::twice);
|
|
BOOST_CHECK(f1_2() == 2);
|
|
|
|
f1_2 = Loki::function<int ()>(&five,&X::twice);
|
|
BOOST_CHECK(f1_2() == 10);
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#ifndef TEST_LOKI_FUNCTION
|
|
|
|
boost::function<int (X&, int)> f2(&X::plus);
|
|
|
|
BOOST_CHECK(f2(one, 3) == 4);
|
|
BOOST_CHECK(f2(five, 4) == 9);
|
|
|
|
#else
|
|
|
|
Loki::Function<int (int)> f2(&one,&X::plus);
|
|
BOOST_CHECK(f2(3) == 4);
|
|
|
|
f2 = Loki::Function<int (int)>(&five,&X::plus);
|
|
BOOST_CHECK(f2(4) == 9);
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
struct add_with_throw_on_copy
|
|
{
|
|
int operator()(int x, int y) const
|
|
{
|
|
return x+y;
|
|
}
|
|
|
|
add_with_throw_on_copy()
|
|
{}
|
|
|
|
add_with_throw_on_copy(const add_with_throw_on_copy&)
|
|
{
|
|
throw runtime_error("But this CAN'T throw");
|
|
}
|
|
|
|
add_with_throw_on_copy& operator=(const add_with_throw_on_copy&)
|
|
{
|
|
throw runtime_error("But this CAN'T throw");
|
|
}
|
|
};
|
|
|
|
static void test_ref()
|
|
{
|
|
add_with_throw_on_copy atc;
|
|
try
|
|
{
|
|
#ifndef TEST_LOKI_FUNCTION
|
|
boost::function<int (int, int)> f(ref(atc));
|
|
BOOST_CHECK(f(1, 3) == 4);
|
|
#else
|
|
//TODO: implement Loki::Ref
|
|
//Loki::Function<int (int, int)> f(Loki::ref(atc));
|
|
//BOOST_CHECK(f(1, 3) == 4);
|
|
#endif
|
|
|
|
}
|
|
catch(runtime_error e)
|
|
{
|
|
#ifndef TEST_LOKI_FUNCTION
|
|
BOOST_ERROR("Nonthrowing constructor threw an exception");
|
|
#endif
|
|
}
|
|
}
|
|
|
|
static void test_exception()
|
|
{
|
|
function<int (int, int)> f;
|
|
|
|
try
|
|
{
|
|
f(5, 4);
|
|
BOOST_CHECK(false);
|
|
}
|
|
catch(bad_function_call)
|
|
{
|
|
// okay
|
|
}
|
|
}
|
|
|
|
|
|
typedef function< void * (void * reader) > reader_type;
|
|
typedef std::pair<int, reader_type> mapped_type;
|
|
|
|
static void test_implicit()
|
|
{
|
|
mapped_type m;
|
|
m = mapped_type();
|
|
}
|
|
|
|
static void test_call_obj(function<int (int, int)> f)
|
|
{
|
|
assert(!f.empty());
|
|
}
|
|
|
|
static void test_call_cref(const function<int (int, int)>& f)
|
|
{
|
|
assert(!f.empty());
|
|
}
|
|
|
|
static void test_call()
|
|
{
|
|
test_call_obj(std::plus<int>());
|
|
test_call_cref(std::plus<int>());
|
|
}
|
|
|
|
int main()
|
|
{
|
|
test_static_function();
|
|
test_zero_args();
|
|
test_one_arg();
|
|
test_two_args();
|
|
test_emptiness();
|
|
test_member_functions();
|
|
test_ref();
|
|
test_exception();
|
|
test_implicit();
|
|
test_call();
|
|
|
|
#if defined(__BORLANDC__) || defined(_MSC_VER)
|
|
system("PAUSE");
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
#else // #ifndef LOKI_FUNCTORS_ARE_COMPARABLE
|
|
int main()
|
|
{
|
|
return 0;
|
|
}
|
|
#endif
|