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44 changes: 44 additions & 0 deletions exercise/01/animal.cpp
Original file line number Diff line number Diff line change
@@ -0,0 +1,44 @@
#include "animal.h"

animal::animal() {};
animal::~animal() {};

unsigned int bird::legs() { return 2; }
std::wstring sparrow::species() { return L"sparrow"; }

unsigned int insect::legs() { return 6; }
std::wstring cockroach::species() { return L"cockroach"; }

unsigned int spider::legs() { return 8; }
std::wstring tarantula::species() { return L"tarantula"; }

std::wstring leg_counter::add_animal(std::unique_ptr<animal> &a)
{
std::wstring s = a->species();
animals.push_back(std::move(a));
return s;
}

unsigned int leg_counter::legs() const
{
unsigned int sum_of_legs = 0;
for each (std::unique_ptr<animal> const& a in animals)
{
sum_of_legs += a->legs();
}
return sum_of_legs;
}

std::unique_ptr<animal> animal_factory(int animal_type)
{
switch (animal_type) {
case 1:
return std::make_unique<cockroach>();
case 2:
return std::make_unique<sparrow>();
case 3:
return std::make_unique<tarantula>();
default:
return nullptr;
}
}
59 changes: 59 additions & 0 deletions exercise/01/animal.h
Original file line number Diff line number Diff line change
@@ -0,0 +1,59 @@
#pragma once
#include <string>
#include <vector>

class animal
{
public:
animal();
virtual ~animal() = 0;
virtual std::wstring species() = 0;
virtual unsigned int legs() = 0;
};

class bird : public animal
{
public:
unsigned int legs() override;
};

class sparrow : public bird
{
public:
std::wstring species() override;
};

class insect : public animal
{
public:
unsigned int legs() override;
};

class cockroach : public insect
{
public:
std::wstring species() override;
};

class spider : public animal
{
public:
unsigned int legs() override;
};

class tarantula : public spider
{
public:
std::wstring species() override;
};

class leg_counter
{
private:
std::vector<std::unique_ptr<animal>> animals;
public:
std::wstring add_animal(std::unique_ptr<animal> &a);
unsigned int legs() const;
};

std::unique_ptr<animal> animal_factory(int animal_type);
25 changes: 25 additions & 0 deletions exercise/01/animals.sln
Original file line number Diff line number Diff line change
@@ -0,0 +1,25 @@

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188 changes: 94 additions & 94 deletions exercise/01/animals.vcxproj
Original file line number Diff line number Diff line change
@@ -1,95 +1,95 @@
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46 changes: 23 additions & 23 deletions exercise/01/animals.vcxproj.filters
Original file line number Diff line number Diff line change
@@ -1,24 +1,24 @@
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4 changes: 2 additions & 2 deletions exercise/01/test.cpp
Original file line number Diff line number Diff line change
Expand Up @@ -39,13 +39,13 @@ TEST_CLASS(test_animal_hierarchy)
Assert::AreEqual(L"sparrow", lc.add_animal(animal_factory(2)).c_str());
Assert::AreEqual(L"tarantula", lc.add_animal(animal_factory(3)).c_str());
Assert::AreEqual(16u, lc.legs());
}
}
TEST_METHOD(legg_counter_same_animal)
{
leg_counter lc;
lc.add_animal(animal_factory(2));
lc.add_animal(animal_factory(2));
Assert::AreEqual(4u, lc.legs());
}

};