test_operators.cpp.svn-base

来自「本人找过多个在linux下c++的lua5.1封装库,但很少.luabind已经」· SVN-BASE 代码 · 共 192 行

// Copyright (c) 2003 Daniel Wallin and Arvid Norberg

// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:

// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.

// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
// ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
// TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
// PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
// SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
// ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
// OR OTHER DEALINGS IN THE SOFTWARE.

#include "test.hpp"
#include <luabind/luabind.hpp>
#include <luabind/operator.hpp>
#include <iosfwd>

struct operator_tester : counted_type<operator_tester>
{
	int operator+(int a) const
	{
		return 1 + a;
	}

	int operator-() const
	{
		return 46;
	}

	float operator()() const
	{
		return 3.5f;
	}

	float operator()(int a) const
	{
		return 3.5f + a;
	}

	float operator()(int a)
	{
		return 2.5f + a;
	}
};

float operator*(operator_tester const& lhs, operator_tester const& rhs)
{
	return 35.f;
}

std::string operator*(operator_tester const&, int v)
{
	return "(operator_tester, int) overload";
}

int operator+(int a, const operator_tester&)
{
	return 2 + a;
}

struct operator_tester2 : counted_type<operator_tester2>
{
};

int operator+(const operator_tester&, const operator_tester2&)
{
	return 73;
}

struct operator_tester3: operator_tester, counted_type<operator_tester3> {};

std::ostream& operator<<(std::ostream& os, const operator_tester&)
{
	os << "operator_tester"; return os;
}

struct op_test1
{
	bool operator==(op_test1 const& rhs) const { return true; } 
};

struct op_test2 : public op_test1
{
	bool operator==(op_test2 const& rhs) const { return true; } 
};

COUNTER_GUARD(operator_tester);
COUNTER_GUARD(operator_tester2);
COUNTER_GUARD(operator_tester3);

void test_main(lua_State* L)
{
	using namespace luabind;

	module(L)
	[
		class_<operator_tester>("operator_tester")
			.def(constructor<>())
			.def(tostring(const_self))
			.def(self + int())
			.def(other<int>() + self)
			.def(-self)
			.def(self + other<operator_tester2&>())
			.def(self())
			.def(const_self(int()))
			.def(self(int()))
			.def(tostring(const_self))
//			.def(const_self * other<operator_tester const&>())
			.def(const_self * const_self)
			.def(const_self * other<int>()),
//			.def("clone", &clone, adopt(return_value)),

		class_<operator_tester2>("operator_tester2")
			.def(constructor<>())
			.def(other<const operator_tester&>() + self),

		class_<operator_tester3, operator_tester>("operator_tester3")
			.def(constructor<>()),

		class_<op_test1>("op_test1")
			.def(constructor<>())
			.def(const_self == const_self),

		class_<op_test2, op_test1>("op_test2")
			.def(constructor<>())
			.def(self == self)
	];
	
	DOSTRING(L, "test = operator_tester()");
	DOSTRING(L, "test2 = operator_tester2()");
	DOSTRING(L, "test3 = operator_tester3()");

	DOSTRING(L, "assert(tostring(test) == 'operator_tester')");
	
	DOSTRING(L, "assert(test() == 3.5)");
	DOSTRING(L, "assert(test(5) == 2.5 + 5)");

	DOSTRING(L, "assert(-test == 46)");
	DOSTRING(L, "assert(test * test == 35)");
	DOSTRING(L, "assert(test * 3 == '(operator_tester, int) overload')")
	DOSTRING(L, "assert(test + test2 == 73)");
	DOSTRING(L, "assert(2 + test == 2 + 2)");
	DOSTRING(L, "assert(test + 2 == 1 + 2)");
	DOSTRING(L, "assert(test3 + 6 == 1 + 6)");
	DOSTRING(L, "assert(test3 + test2 == 73)");
//	DOSTRING(L, "assert(tostring(test) == 'operator_tester')");

	const char* prog =
		"class 'my_class'\n"
		"function my_class:__add(lhs)\n"
		"	return my_class(self.val + lhs.val)\n"
		"end\n"
		"function my_class:__init(a)\n"
		"	self.val = a\n"
		"end\n"
		"function my_class:__sub(v)\n"
		"	if (type(self) == 'number') then\n"
		"		return my_class(self - v.val)\n"
		"	elseif (type(v) == 'number') then\n"
		"		return my_class(self.val - v)\n"
		"	else\n"
		"		return my_class(self.val - v.val)\n"
		"	end\n"
		"end\n"
		"a = my_class(3)\n"
		"b = my_class(7)\n"
		"c = a + b\n"
		"d = a - 2\n"
		"d = 10 - d\n"
		"d = d - b\n";

	DOSTRING(L, prog);
	DOSTRING(L, "assert(c.val == 10)");
	DOSTRING(L, "assert(d.val == 2)");

    DOSTRING(L,
		"a = op_test1()\n"
		"b = op_test2()\n"
		"assert(a == b)");
}