inspiration/ETL/test/value.cpp

/*! ========================================================================
** Extended Template and Library Test Suite
** Generic Value Test
**
** Copyright (c) 2002 Adrian Bentley
** Copyright (c) 2010 Nikita Kitaev
**
** This package is free software; you can redistribute it and/or
** modify it under the terms of the GNU General Public License as
** published by the Free Software Foundation; either version 2 of
** the License, or (at your option) any later version.
**
** This package is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
** General Public License for more details.
**
** === N O T E S ===========================================================
**
** ========================================================================= */

#include <ETL/value>
#include <stdio.h>

using namespace etl;

struct stupidv {
    float x, y;

    stupidv(float xin = 0, float yin = 0) : x(xin), y(yin) {}
    void print() const
    {
        printf("(x=%f,y=%f)\n", x, y);
    }
};

struct stupidp {
    float z, w;

    stupidp(float zin = 0, float win = 0) : z(zin), w(win) {}

    void print() const
    {
        printf("(z=%f,w=%f)\n", z, w);
    }
};

template <>
class value_store_type<stupidp>
{
public:
    typedef stupidv	value_type;
};

int main()
{
    try {
        value	v(10.0); // construction
        value	v2;		 // default construct...

        // get type...
        printf("type of 10.0: %s\n", v.type().name());

        v2 = 1; // assignment
        printf("type of 1: %s\n", v2.type().name());

        // extract int test

        int *pi = value_cast<int>(&v2);
        printf("v2 is an int(%p)\n", pi);
        printf("	%d\n", value_cast<int>(v2));

        printf("	const version: %d\n", value_cast<int>(value(5)));

        v = 'c'; // assignment again...
        printf("type of c: %s\n", v.type().name());

        v2 = v; // value assignment
        printf("type of v2 , v: %s , %s\n", v2.type().name(), v.type().name());

        // random type test
        v = stupidv(0, 1);
        printf("type of vec: %s\n", v.type().name());

        // type cast with binary change test
        value_cast<stupidp>(&v)->print();
        value_cast<stupidv>(stupidp(5, 10)).print(); // copy test

        printf("type of v: %s\n", v.type().name());
        printf("type of v2: %s\n", v2.type().name());
        v.swap(v2);
        printf("type of v: %s\n", v.type().name());
        printf("type of v2: %s\n", v2.type().name());

        // test the exception throwing...
        value_cast<int>(stupidp(6, 66));

    } catch (const etl::bad_value_cast &e) {
        printf("	Exploded: %s\n", e.what());
    } catch (...) {
        printf("	Exploded\n");
    }

    return 0;
}