urho3d/Extras/LuaScript/pkgs/Container/Vector.pkg

$#include "Vector.h"
$#include "Vector3.h"

/// %Vector template class.
class Vector : public VectorBase
{
    TOLUA_TEMPLATE_BIND(T, String)
public:
    /// Construct empty.
    Vector()
    {
    }
    
    /// Construct with initial size.
    explicit Vector(unsigned size)
    {
        Resize(size, 0);
    }
    
    /// Construct with initial data.
    Vector(const T* data, unsigned size)
    {
        Resize(size, data);
    }
    
    /// Construct from another vector.
    Vector(const Vector<T>& vector)
    {
        *this = vector;
    }
    
    /// Destruct.
    ~Vector()
    {
        Clear();
        delete[] buffer_;
    }
    
    /// Add an element.
    Vector<T> operator + (const T& rhs) const
    {
        Vector<T> ret(*this);
        ret.Push(rhs);
        return ret;
    }
    
    /// Add another vector.
    Vector<T> operator + (const Vector<T>& rhs) const
    {
        Vector<T> ret(*this);
        ret.Push(rhs);
        return ret;
    }
    
    /// Test for equality with another vector.
    bool operator == (const Vector<T>& rhs) const
    {
        if (rhs.size_ != size_)
            return false;
        
        T* buffer = Buffer();
        T* rhsBuffer = rhs.Buffer();
        for (unsigned i = 0; i < size_; ++i)
        {
            if (buffer[i] != rhsBuffer[i])
                return false;
        }
        
        return true;
    }
    
    /// Return element at index.
    T& operator [] (unsigned index) { assert(index < size_); return Buffer()[index]; }
    /// Return const element at index.
    const T& operator [] (unsigned index) const { assert(index < size_); return Buffer()[index]; }
    /// Return element at index.
    T& At(unsigned index) { assert(index < size_); return Buffer()[index]; }
    /// Return const element at index.
    const T& At(unsigned index) const { assert(index < size_); return Buffer()[index]; }

    /// Add an element at the end.
    void Push(const T& value) { Resize(size_ + 1, &value); }
    /// Add another vector at the end.
    void Push(const Vector<T>& vector) { Resize(size_ + vector.size_, vector.Buffer()); }
    
    /// Remove the last element.
    void Pop()
    {
        if (size_)
            Resize(size_ - 1, 0);
    }
    
    /// Insert an element at position.
    void Insert(unsigned pos, const T& value)
    {
        if (pos > size_)
            pos = size_;
        
        unsigned oldSize = size_;
        Resize(size_ + 1, 0);
        MoveRange(pos + 1, pos, oldSize - pos);
        Buffer()[pos] = value;
    }
    
    /// Insert another vector at position.
    void Insert(unsigned pos, const Vector<T>& vector)
    {
        if (pos > size_)
            pos = size_;
        
        unsigned oldSize = size_;
        Resize(size_ + vector.size_, 0);
        MoveRange(pos + vector.size_, pos, oldSize - pos);
        CopyElements(Buffer() + pos, vector.Buffer(), vector.size_);
    }
    /// Erase a range of elements.
    void Erase(unsigned pos, unsigned length = 1)
    {
        // Return if the range is illegal
        if (pos + length > size_ || !length)
            return;
        
        MoveRange(pos, pos + length, size_ - pos - length);
        Resize(size_ - length, 0);
    }
       
    /// Erase an element if found.
    bool Remove(const T& value)
    {
        Iterator i = Find(value);
        if (i != End())
        {
            Erase(i);
            return true;
        }
        else
            return false;
    }
    
    /// Clear the vector.
    void Clear() { Resize(0); }
    /// Resize the vector.
    void Resize(unsigned newSize) { Resize(newSize, 0); }
    
    /// Set new capacity.
    void Reserve(unsigned newCapacity)
    {
        if (newCapacity < size_)
            newCapacity = size_;
        
        if (newCapacity != capacity_)
        {
            T* newBuffer = 0;
            capacity_ = newCapacity;
            
            if (capacity_)
            {
                newBuffer = reinterpret_cast<T*>(AllocateBuffer(capacity_ * sizeof(T)));
                // Move the data into the new buffer
                ConstructElements(newBuffer, Buffer(), size_);
            }
            
            // Delete the old buffer
            DestructElements(Buffer(), size_);
            delete[] buffer_;
            buffer_ = reinterpret_cast<unsigned char*>(newBuffer);
        }
    }
    
    /// Reallocate so that no extra memory is used.
    void Compact() { Reserve(size_); }
    
    /// Return whether contains a specific value.
    bool Contains(const T& value) const { return Find(value) != End(); }
    
    /// Return first element.
    T& Front() { assert(size_); return Buffer()[0]; }
    /// Return const first element.
    const T& Front() const { assert(size_); return Buffer()[0]; }
    /// Return last element.
    T& Back() { assert(size_); return Buffer()[size_ - 1]; }
    /// Return const last element.
    const T& Back() const { assert(size_); return Buffer()[size_ - 1]; }
    /// Return size of vector.
    unsigned Size() const { return size_; }
    /// Return capacity of vector.
    unsigned Capacity() const { return capacity_; }
    /// Return whether vector is empty.
    bool Empty() const { return size_ == 0; }    
};

/// %Vector template class for POD types. Does not call constructors or destructors and uses block move.
class PODVector
{
    TOLUA_TEMPLATE_BIND(T, Vector3)
public:   
    /// Construct empty.
    PODVector()
    {
    }
    
    /// Construct with initial size.
    explicit PODVector(unsigned size)
    {
        Resize(size);
    }
    
    /// Construct with initial data.
    PODVector(const T* data, unsigned size)
    {
        Resize(size);
        CopyElements(Buffer(), data, size);
    }
    
    /// Destruct.
    ~PODVector()
    {
        delete[] buffer_;
    }
    
    /// Add an element.
    PODVector<T> operator + (const T& rhs) const
    {
        PODVector<T> ret(*this);
        ret.Push(rhs);
        return ret;
    }
    
    /// Add another vector.
    PODVector<T> operator + (const PODVector<T>& rhs) const
    {
        PODVector<T> ret(*this);
        ret.Push(rhs);
        return ret;
    }
    
    /// Test for equality with another vector.
    bool operator == (const PODVector<T>& rhs) const
    {
        if (rhs.size_ != size_)
            return false;
        
        T* buffer = Buffer();
        T* rhsBuffer = rhs.Buffer();
        for (unsigned i = 0; i < size_; ++i)
        {
            if (buffer[i] != rhsBuffer[i])
                return false;
        }
        
        return true;
    }
    
    /// Return element at index.
    T& operator [] (unsigned index) { assert(index < size_); return Buffer()[index]; }
    /// Return const element at index.
    const T& operator [] (unsigned index) const { assert(index < size_); return Buffer()[index]; }
    /// Return element at index.
    T& At(unsigned index) { assert(index < size_); return Buffer()[index]; }
    /// Return const element at index.
    const T& At(unsigned index) const { assert(index < size_); return Buffer()[index]; }
    
    /// Add an element at the end.
    void Push(const T& value)
    {
        if (size_ < capacity_)
            ++size_;
        else
            Resize(size_ + 1);
        Back() = value;
    }
    
    /// Add another vector at the end.
    void Push(const PODVector<T>& vector)
    {
        unsigned oldSize = size_;
        Resize(size_ + vector.size_);
        CopyElements(Buffer() + oldSize, vector.Buffer(), vector.size_);
    }
    
    /// Remove the last element.
    void Pop()
    {
        if (size_)
            Resize(size_ - 1);
    }
    
    /// Insert an element at position.
    void Insert(unsigned pos, const T& value)
    {
        if (pos > size_)
            pos = size_;
        
        unsigned oldSize = size_;
        Resize(size_ + 1);
        MoveRange(pos + 1, pos, oldSize - pos);
        Buffer()[pos] = value;
    }
    
    /// Insert another vector at position.
    void Insert(unsigned pos, const PODVector<T>& vector)
    {
        if (pos > size_)
            pos = size_;
        
        unsigned oldSize = size_;
        Resize(size_ + vector.size_);
        MoveRange(pos + vector.size_, pos, oldSize - pos);
        CopyElements(Buffer() + pos, vector.Buffer(), vector.size_);
    }
    
    /// Erase a range of elements.
    void Erase(unsigned pos, unsigned length = 1)
    {
        // Return if the range is illegal
        if (!length || pos + length > size_)
            return;
        
        MoveRange(pos, pos + length, size_ - pos - length);
        Resize(size_ - length);
    }
    
    /// Erase an element if found.
    bool Remove(const T& value)
    {
        Iterator i = Find(value);
        if (i != End())
        {
            Erase(i);
            return true;
        }
        else
            return false;
    }
    
    /// Clear the vector.
    void Clear() { Resize(0); }
    
    /// Resize the vector.
    void Resize(unsigned newSize)
    {
        if (newSize > capacity_)
        {
            if (!capacity_)
                capacity_ = newSize;
            else
            {
                while (capacity_ < newSize)
                    capacity_ += (capacity_ + 1) >> 1;
            }
            
            unsigned char* newBuffer = AllocateBuffer(capacity_ * sizeof(T));
            // Move the data into the new buffer and delete the old
            if (buffer_)
            {
                CopyElements(reinterpret_cast<T*>(newBuffer), Buffer(), size_);
                delete[] buffer_;
            }
            buffer_ = newBuffer;
        }
        
        size_ = newSize;
    }
    
    /// Set new capacity.
    void Reserve(unsigned newCapacity)
    {
        if (newCapacity < size_)
            newCapacity = size_;
        
        if (newCapacity != capacity_)
        {
            unsigned char* newBuffer = 0;
            capacity_ = newCapacity;
            
            if (capacity_)
            {
                newBuffer = AllocateBuffer(capacity_ * sizeof(T));
                // Move the data into the new buffer
                CopyElements(reinterpret_cast<T*>(newBuffer), Buffer(), size_);
            }
            
            // Delete the old buffer
            delete[] buffer_;
            buffer_ = newBuffer;
        }
    }
    
    /// Reallocate so that no extra memory is used.
    void Compact() { Reserve(size_); }
    
    /// Return whether contains a specific value.
    bool Contains(const T& value) const { return Find(value) != End(); }
    /// Return first element.
    T& Front() { return Buffer()[0]; }
    /// Return const first element.
    const T& Front() const { return Buffer()[0]; }
    /// Return last element.
    T& Back() { assert(size_); return Buffer()[size_ - 1]; }
    /// Return const last element.
    const T& Back() const { assert(size_); return Buffer()[size_ - 1]; }
    /// Return number of elements.
    unsigned Size() const { return size_; }
    /// Return capacity of vector.
    unsigned Capacity() const { return capacity_; }
    /// Return whether vector is empty.
    bool Empty() const { return size_ == 0; }
};