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SqMod/source/Library/Utils/Buffer.hpp

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#ifndef _LIBRARY_UTILS_BUFFER_HPP_
#define _LIBRARY_UTILS_BUFFER_HPP_
// ------------------------------------------------------------------------------------------------
#include "Base/Shared.hpp"
#include "Base/Buffer.hpp"
// ------------------------------------------------------------------------------------------------
namespace SqMod {
/* ------------------------------------------------------------------------------------------------
* Squirrel wrapper for the shared buffer class.
*/
class SqBuffer
{
private:
// --------------------------------------------------------------------------------------------
typedef SharedPtr< Buffer > SRef; // Strong reference type to the managed memory buffer.
typedef WeakPtr< Buffer > WRef; // Weak reference type to the managed memory buffer.
// --------------------------------------------------------------------------------------------
SRef m_Buffer; // The managed memory buffer.
public:
// --------------------------------------------------------------------------------------------
typedef Buffer::Value Value; // The type of value used to represent a byte.
// --------------------------------------------------------------------------------------------
typedef Value & Reference; // A reference to the stored value type.
typedef const Value & ConstRef; // A const reference to the stored value type.
// --------------------------------------------------------------------------------------------
typedef Value * Pointer; // A pointer to the stored value type.
typedef const Value * ConstPtr; // A const pointer to the stored value type.
// --------------------------------------------------------------------------------------------
typedef Buffer::SzType SzType; // The type used to represent size in general.
public:
/* --------------------------------------------------------------------------------------------
* Create a memory buffer with the requested size.
*/
static Object Create(SzType n);
/* --------------------------------------------------------------------------------------------
* Default constructor.
*/
SqBuffer()
: m_Buffer(new Buffer())
{
/* ... */
}
/* --------------------------------------------------------------------------------------------
* Allocate constructor.
*/
SqBuffer(SQInteger n)
: m_Buffer(new Buffer(ConvTo< SzType >::From(n)))
{
/* ... */
}
/* --------------------------------------------------------------------------------------------
* Allocate constructor.
*/
SqBuffer(SQInteger n, SQInteger c)
: m_Buffer(new Buffer(ConvTo< SzType >::From(n), ConvTo< SzType >::From(c)))
{
/* ... */
}
/* --------------------------------------------------------------------------------------------
* Copy constructor.
*/
SqBuffer(ConstPtr p, SQInteger n)
: m_Buffer(new Buffer(p, ConvTo< SzType >::From(n)))
{
/* ... */
}
/* --------------------------------------------------------------------------------------------
* Copy constructor.
*/
SqBuffer(ConstPtr p, SQInteger n, SQInteger c)
: m_Buffer(new Buffer(p, ConvTo< SzType >::From(n), ConvTo< SzType >::From(c)))
{
/* ... */
}
/* --------------------------------------------------------------------------------------------
* Reference constructor.
*/
SqBuffer(const SRef & ref)
: m_Buffer(ref)
{
/* ... */
}
/* --------------------------------------------------------------------------------------------
* Buffer constructor.
*/
SqBuffer(const Buffer & b)
: m_Buffer(new Buffer(b))
{
/* ... */
}
/* --------------------------------------------------------------------------------------------
* Buffer constructor.
*/
SqBuffer(Buffer && b)
: m_Buffer(new Buffer(std::move(b)))
{
/* ... */
}
/* --------------------------------------------------------------------------------------------
* Copy constructor.
*/
SqBuffer(const SqBuffer & o) = default;
/* --------------------------------------------------------------------------------------------
* Move constructor.
*/
SqBuffer(SqBuffer && o) = default;
/* --------------------------------------------------------------------------------------------
* Destructor.
*/
~SqBuffer() = default;
/* --------------------------------------------------------------------------------------------
* Copy assignment operator.
*/
SqBuffer & operator = (const SqBuffer & o) = default;
/* --------------------------------------------------------------------------------------------
* Move assignment operator.
*/
SqBuffer & operator = (SqBuffer && o) = default;
/* --------------------------------------------------------------------------------------------
* Retrieve a reference to the managed memory buffer.
*/
const SRef & GetRef() const
{
return m_Buffer;
}
/* --------------------------------------------------------------------------------------------
* Validate the managed memory buffer reference.
*/
void Validate() const
{
// Do we even point to a valid buffer?
if (!m_Buffer)
{
STHROWF("Invalid memory buffer reference");
}
}
/* --------------------------------------------------------------------------------------------
* Validate the managed memory buffer reference and the buffer itself.
*/
void ValidateDeeper() const
{
// Do we even point to a valid buffer?
if (!m_Buffer)
{
STHROWF("Invalid memory buffer reference");
}
// Validate the buffer itself
else if (!(*m_Buffer))
{
STHROWF("Invalid memory buffer");
}
}
/* --------------------------------------------------------------------------------------------
* Retrieve a certain element type at the specified position.
*/
Value Get(SQInteger n) const
{
// Validate the managed buffer reference
Validate();
// Return the requested element
return m_Buffer->At(ConvTo< SzType >::From(n));
}
/* --------------------------------------------------------------------------------------------
* Modify a certain element type at the specified position.
*/
void Set(SQInteger n, SQInteger v)
{
// Validate the managed buffer reference
Validate();
// Return the requested element
m_Buffer->At(ConvTo< SzType >::From(n)) = ConvTo< Value >::From(v);
}
/* --------------------------------------------------------------------------------------------
* Retrieve the element at the front of the buffer.
*/
Value GetFront() const
{
// Validate the managed buffer reference
Validate();
// Return the requested element
return m_Buffer->Front();
}
/* --------------------------------------------------------------------------------------------
* Modify the element at the front of the buffer.
*/
void SetFront(SQInteger v)
{
// Validate the managed buffer reference
Validate();
// Return the requested element
m_Buffer->Front() = ConvTo< Value >::From(v);
}
/* --------------------------------------------------------------------------------------------
* Retrieve the element after the first element in the buffer.
*/
Value GetNext() const
{
// Validate the managed buffer reference
Validate();
// Return the requested element
return m_Buffer->Next();
}
/* --------------------------------------------------------------------------------------------
* Modify the element after the first element in the buffer.
*/
void SetNext(SQInteger v)
{
// Validate the managed buffer reference
Validate();
// Return the requested element
m_Buffer->Next() = ConvTo< Value >::From(v);
}
/* --------------------------------------------------------------------------------------------
* Retrieve the element at the back of the buffer.
*/
Value GetBack() const
{
// Validate the managed buffer reference
Validate();
// Return the requested element
return m_Buffer->Back();
}
/* --------------------------------------------------------------------------------------------
* Modify the element at the back of the buffer.
*/
void SetBack(SQInteger v)
{
// Validate the managed buffer reference
Validate();
// Return the requested element
m_Buffer->Back() = ConvTo< Value >::From(v);
}
/* --------------------------------------------------------------------------------------------
* Retrieve the element before the last element in the buffer.
*/
Value GetPrev() const
{
// Validate the managed buffer reference
Validate();
// Return the requested element
return m_Buffer->Prev();
}
/* --------------------------------------------------------------------------------------------
* Modify the element before the last element in the buffer.
*/
void SetPrev(SQInteger v)
{
// Validate the managed buffer reference
Validate();
// Return the requested element
m_Buffer->Prev() = ConvTo< Value >::From(v);
}
/* --------------------------------------------------------------------------------------------
* Reposition the edit cursor to the specified number of elements ahead.
*/
void Advance(SQInteger n)
{
// Validate the managed buffer reference
Validate();
// Perform the requested operation
m_Buffer->Advance(ConvTo< SzType >::From(n));
}
/* --------------------------------------------------------------------------------------------
* Reposition the edit cursor to the specified number of elements behind.
*/
void Retreat(SQInteger n)
{
// Validate the managed buffer reference
Validate();
// Perform the requested operation
m_Buffer->Retreat(ConvTo< SzType >::From(n));
}
/* --------------------------------------------------------------------------------------------
* Reposition the edit cursor to a fixed position within the buffer.
*/
void Move(SQInteger n)
{
// Validate the managed buffer reference
Validate();
// Perform the requested operation
m_Buffer->Move(ConvTo< SzType >::From(n));
}
/* --------------------------------------------------------------------------------------------
* Append a value to the current cursor location and advance the cursor.
*/
void Push(SQInteger v)
{
// Validate the managed buffer reference
Validate();
// Perform the requested operation
m_Buffer->Push(ConvTo< Value >::From(v));
}
/* --------------------------------------------------------------------------------------------
* Retrieve the element at the cursor position.
*/
Value GetCursor() const
{
// Validate the managed buffer reference
Validate();
// Return the requested element
return m_Buffer->Cursor();
}
/* --------------------------------------------------------------------------------------------
* Modify the element at the cursor position.
*/
void SetCursor(SQInteger v)
{
// Validate the managed buffer reference
Validate();
// Return the requested element
m_Buffer->Cursor() = ConvTo< Value >::From(v);
}
/* --------------------------------------------------------------------------------------------
* Retrieve the element before the cursor position.
*/
Value GetBefore() const
{
// Validate the managed buffer reference
Validate();
// Return the requested element
return m_Buffer->Before();
}
/* --------------------------------------------------------------------------------------------
* Modify the element before the cursor position.
*/
void SetBefore(SQInteger v)
{
// Validate the managed buffer reference
Validate();
// Return the requested element
m_Buffer->Before() = ConvTo< Value >::From(v);
}
/* --------------------------------------------------------------------------------------------
* Retrieve the element after the cursor position.
*/
Value GetAfter() const
{
// Validate the managed buffer reference
Validate();
// Return the requested element
return m_Buffer->After();
}
/* --------------------------------------------------------------------------------------------
* Modify the element after the cursor position.
*/
void SetAfter(SQInteger v)
{
// Validate the managed buffer reference
Validate();
// Return the requested element
m_Buffer->After() = ConvTo< Value >::From(v);
}
/* --------------------------------------------------------------------------------------------
* Retrieve maximum elements it can hold for a certain type.
*/
SzType GetMax() const
{
return Buffer::Max();
}
/* --------------------------------------------------------------------------------------------
* Retrieve the current buffer capacity in element count.
*/
SzType GetSize() const
{
// Validate the managed buffer reference
Validate();
// Return the requested information
return m_Buffer->CapacityAs< Value >();
}
/* --------------------------------------------------------------------------------------------
* Retrieve the current buffer capacity in byte count.
*/
SzType GetCapacity() const
{
// Validate the managed buffer reference
Validate();
// Return the requested information
return m_Buffer->Capacity();
}
/* --------------------------------------------------------------------------------------------
* Retrieve the current position of the cursor in the buffer.
*/
SzType GetPosition() const
{
// Validate the managed buffer reference
Validate();
// Return the requested information
return m_Buffer->Position();
}
/* --------------------------------------------------------------------------------------------
* Retrieve the amount of unused buffer after the edit cursor.
*/
SzType GetRemaining() const
{
// Validate the managed buffer reference
Validate();
// Return the requested information
return m_Buffer->Remaining();
}
/* --------------------------------------------------------------------------------------------
* Grow the size of the internal buffer by the specified amount of bytes.
*/
void Grow(SQInteger n)
{
// Validate the managed buffer reference
Validate();
// Perform the requested operation
return m_Buffer->Grow(ConvTo< SzType >::From(n) * sizeof(Value));
}
/* --------------------------------------------------------------------------------------------
* Makes sure there is enough capacity to hold the specified element count.
*/
void Adjust(SQInteger n)
{
// Validate the managed buffer reference
Validate();
// Attempt to perform the requested operation
try
{
Buffer bkp(m_Buffer->Adjust(ConvTo< SzType >::From(n) * sizeof(Value)));
// Copy the data into the new buffer
m_Buffer->Write(0, bkp.Data(), bkp.Capacity());
m_Buffer->Move(bkp.Position());
}
catch (const std::exception & e)
{
STHROWF("%s", e.what()); // Re-package
}
}
/* --------------------------------------------------------------------------------------------
* Write a signed 8 bit integer to the buffer.
*/
void WriteInt8(SQInteger val)
{
// Validate the managed buffer reference
Validate();
// Perform the requested operation
m_Buffer->Push< Int8 >(ConvTo< Int8 >::From(val));
}
/* --------------------------------------------------------------------------------------------
* Write an unsigned 8 bit integer to the buffer.
*/
void WriteUint8(SQInteger val)
{
// Validate the managed buffer reference
Validate();
// Perform the requested operation
m_Buffer->Push< Uint8 >(ConvTo< Uint8 >::From(val));
}
/* --------------------------------------------------------------------------------------------
* Write a signed 16 bit integer to the buffer.
*/
void WriteInt16(SQInteger val)
{
// Validate the managed buffer reference
Validate();
// Perform the requested operation
m_Buffer->Push< Int16 >(ConvTo< Int16 >::From(val));
}
/* --------------------------------------------------------------------------------------------
* Write an unsigned 16 bit integer to the buffer.
*/
void WriteUint16(SQInteger val)
{
// Validate the managed buffer reference
Validate();
// Perform the requested operation
m_Buffer->Push< Uint16 >(ConvTo< Uint16 >::From(val));
}
/* --------------------------------------------------------------------------------------------
* Write a signed 32 bit integer to the buffer.
*/
void WriteInt32(SQInteger val)
{
// Validate the managed buffer reference
Validate();
// Perform the requested operation
m_Buffer->Push< Int32 >(ConvTo< Int32 >::From(val));
}
/* --------------------------------------------------------------------------------------------
* Write an unsigned 32 bit integer to the buffer.
*/
void WriteUint32(SQInteger val)
{
// Validate the managed buffer reference
Validate();
// Perform the requested operation
m_Buffer->Push< Uint32 >(ConvTo< Uint32 >::From(val));
}
/* --------------------------------------------------------------------------------------------
* Write a signed 64 bit integer to the buffer.
*/
void WriteInt64(const SLongInt & val);
/* --------------------------------------------------------------------------------------------
* Write an unsigned 64 bit integer to the buffer.
*/
void WriteUint64(const ULongInt & val);
/* --------------------------------------------------------------------------------------------
* Write a 32 bit float to the buffer.
*/
void WriteFloat32(SQFloat val)
{
// Validate the managed buffer reference
Validate();
// Perform the requested operation
m_Buffer->Push< Float32 >(ConvTo< Float32 >::From(val));
}
/* --------------------------------------------------------------------------------------------
* Write a 64 bit float to the buffer.
*/
void WriteFloat64(SQFloat val)
{
// Validate the managed buffer reference
Validate();
// Perform the requested operation
m_Buffer->Push< Float64 >(ConvTo< Float64 >::From(val));
}
/* --------------------------------------------------------------------------------------------
* Write a string to the buffer.
*/
void WriteString(CSStr val);
/* --------------------------------------------------------------------------------------------
* Write a raw string to the buffer.
*/
void WriteRawString(CSStr val);
/* --------------------------------------------------------------------------------------------
* Write a AABB to the buffer.
*/
void WriteAABB(const AABB & val);
/* --------------------------------------------------------------------------------------------
* Write a Circle to the buffer.
*/
void WriteCircle(const Circle & val);
/* --------------------------------------------------------------------------------------------
* Write a Color3 to the buffer.
*/
void WriteColor3(const Color3 & val);
/* --------------------------------------------------------------------------------------------
* Write a Color4 to the buffer.
*/
void WriteColor4(const Color4 & val);
/* --------------------------------------------------------------------------------------------
* Write a Quaternion to the buffer.
*/
void WriteQuaternion(const Quaternion & val);
/* --------------------------------------------------------------------------------------------
* Write a Sphere to the buffer.
*/
void WriteSphere(const Sphere &val);
/* --------------------------------------------------------------------------------------------
* Write a Vector2 to the buffer.
*/
void WriteVector2(const Vector2 & val);
/* --------------------------------------------------------------------------------------------
* Write a Vector2i to the buffer.
*/
void WriteVector2i(const Vector2i & val);
/* --------------------------------------------------------------------------------------------
* Write a Vector3 to the buffer.
*/
void WriteVector3(const Vector3 & val);
/* --------------------------------------------------------------------------------------------
* Write a Vector4 to the buffer.
*/
void WriteVector4(const Vector4 & val);
/* --------------------------------------------------------------------------------------------
* Write a signed 8 bit integer from the buffer.
*/
SQInteger ReadInt8()
{
// Validate the managed buffer reference
ValidateDeeper();
// Read one element from the buffer
const Int8 value = m_Buffer->Cursor< Int8 >();
// Advance the buffer cursor
m_Buffer->Advance< Int8 >(1);
// Return the requested information
return ConvTo< SQInteger >::From(value);
}
/* --------------------------------------------------------------------------------------------
* Read an unsigned 8 bit integer from the buffer.
*/
SQInteger ReadUint8()
{
// Validate the managed buffer reference
ValidateDeeper();
// Read one element from the buffer
const Uint8 value = m_Buffer->Cursor< Uint8 >();
// Advance the buffer cursor
m_Buffer->Advance< Uint8 >(1);
// Return the requested information
return ConvTo< SQInteger >::From(value);
}
/* --------------------------------------------------------------------------------------------
* Read a signed 16 bit integer from the buffer.
*/
SQInteger ReadInt16()
{
// Validate the managed buffer reference
ValidateDeeper();
// Read one element from the buffer
const Int16 value = m_Buffer->Cursor< Int16 >();
// Advance the buffer cursor
m_Buffer->Advance< Int16 >(1);
// Return the requested information
return ConvTo< SQInteger >::From(value);
}
/* --------------------------------------------------------------------------------------------
* Read an unsigned 16 bit integer from the buffer.
*/
SQInteger ReadUint16()
{
// Validate the managed buffer reference
ValidateDeeper();
// Read one element from the buffer
const Uint16 value = m_Buffer->Cursor< Uint16 >();
// Advance the buffer cursor
m_Buffer->Advance< Uint16 >(1);
// Return the requested information
return ConvTo< SQInteger >::From(value);
}
/* --------------------------------------------------------------------------------------------
* Read a signed 32 bit integer from the buffer.
*/
SQInteger ReadInt32()
{
// Validate the managed buffer reference
ValidateDeeper();
// Read one element from the buffer
const Int32 value = m_Buffer->Cursor< Int32 >();
// Advance the buffer cursor
m_Buffer->Advance< Int32 >(1);
// Return the requested information
return ConvTo< SQInteger >::From(value);
}
/* --------------------------------------------------------------------------------------------
* Read an unsigned 32 bit integer from the buffer.
*/
SQInteger ReadUint32()
{
// Validate the managed buffer reference
ValidateDeeper();
// Read one element from the buffer
const Uint32 value = m_Buffer->Cursor< Uint32 >();
// Advance the buffer cursor
m_Buffer->Advance< Uint32 >(1);
// Return the requested information
return ConvTo< SQInteger >::From(value);
}
/* --------------------------------------------------------------------------------------------
* Read a signed 64 bit integer from the buffer.
*/
SLongInt ReadInt64();
/* --------------------------------------------------------------------------------------------
* Read an unsigned 64 bit integer from the buffer.
*/
ULongInt ReadUint64();
/* --------------------------------------------------------------------------------------------
* Read a 32 bit float from the buffer.
*/
SQFloat ReadFloat32()
{
// Validate the managed buffer reference
ValidateDeeper();
// Read one element from the buffer
const Float32 value = m_Buffer->Cursor< Float32 >();
// Advance the buffer cursor
m_Buffer->Advance< Float32 >(1);
// Return the requested information
return ConvTo< SQFloat >::From(value);
}
/* --------------------------------------------------------------------------------------------
* Read a 64 bit float from the buffer.
*/
SQFloat ReadFloat64()
{
// Validate the managed buffer reference
ValidateDeeper();
// Read one element from the buffer
const Float64 value = m_Buffer->Cursor< Float64 >();
// Advance the buffer cursor
m_Buffer->Advance< Float64 >(1);
// Return the requested information
return ConvTo< SQFloat >::From(value);
}
/* --------------------------------------------------------------------------------------------
* Read a string from the buffer.
*/
Object ReadString();
/* --------------------------------------------------------------------------------------------
* Read a raw string from the buffer.
*/
Object ReadRawString(SQInteger length);
/* --------------------------------------------------------------------------------------------
* Read a AABB from the buffer.
*/
AABB ReadAABB();
/* --------------------------------------------------------------------------------------------
* Read a Circle from the buffer.
*/
Circle ReadCircle();
/* --------------------------------------------------------------------------------------------
* Read a Color3 from the buffer.
*/
Color3 ReadColor3();
/* --------------------------------------------------------------------------------------------
* Read a Color4 from the buffer.
*/
Color4 ReadColor4();
/* --------------------------------------------------------------------------------------------
* Read a Quaternion from the buffer.
*/
Quaternion ReadQuaternion();
/* --------------------------------------------------------------------------------------------
* Read a Sphere from the buffer.
*/
Sphere ReadSphere();
/* --------------------------------------------------------------------------------------------
* Read a Vector2 from the buffer.
*/
Vector2 ReadVector2();
/* --------------------------------------------------------------------------------------------
* Read a Vector2i from the buffer.
*/
Vector2i ReadVector2i();
/* --------------------------------------------------------------------------------------------
* Read a Vector3 from the buffer.
*/
Vector3 ReadVector3();
/* --------------------------------------------------------------------------------------------
* Read a Vector4 from the buffer.
*/
Vector4 ReadVector4();
};
} // Namespace:: SqMod
#endif // _LIBRARY_UTILS_BUFFER_HPP_
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