C# Class RTools.Util.CharBuffer

Buffer for characters. This approximates StringBuilder but is designed to be faster for specific operations. This is about 30% faster for the operations I'm interested in (Append, Clear, Length, ToString). This trades off memory for speed.

To make Remove from the head fast, this is implemented as a ring buffer.

This uses head and tail indices into a fixed-size array. This will grow the array as necessary.

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Public Methods

Method	Description
Append ( CharBuffer s ) : void	Append a string to this buffer.
Append ( char c ) : void	Append a character to this buffer.
Append ( string s ) : void	Append a string to this buffer.
CharBuffer ( ) : System	Default constructor.
CharBuffer ( int capacity ) : System	Construct with a specific capacity.
Clear ( ) : void	Empty the buffer.
IndexOf ( char c ) : int	Find the first instance of a character in the buffer, and return its index. This returns -1 if the character is not found.
Remove ( int i ) : void	Remove a character at the specified index.
Remove ( int i, int n ) : void	Remove a specified number of characters at the specified index.
SetBuffer ( char b, int len ) : void	Overwrite this object's underlying buffer with the specified buffer.
SpeedTest ( ) : void	Compare speed to StringBuilder.
TestSelf ( ) : bool	Simple self test.
ToString ( ) : String	Return the current contents as a string.
this ( int index ) : char	Indexer.

Protected Methods

Method	Description
CheckCapacity ( int requestedLength ) : void	Ensure that we're set for the requested length by potentially growing or shifting contents.
Grow ( int requestedLen ) : void	Reallocate the buffer to be larger. For the new size, this uses the max of the requested length and double the current capacity. This does not shift, meaning it does not change the head or tail indices.
ShiftToZero ( ) : void	Move the buffer contents such that headIndex becomes 0.

Method Details

Append() public method

Append a string to this buffer.

public Append ( CharBuffer s ) : void
s	CharBuffer	The string to append.
return	void

Append() public method

Append a character to this buffer.

public Append ( char c ) : void
c	char
return	void

Append() public method

Append a string to this buffer.

public Append ( string s ) : void
s	string	The string to append.
return	void

CharBuffer() public method

Default constructor.

public CharBuffer ( ) : System
return	System

CharBuffer() public method

Construct with a specific capacity.

public CharBuffer ( int capacity ) : System
capacity	int
return	System

CheckCapacity() protected method

Ensure that we're set for the requested length by potentially growing or shifting contents.

protected CheckCapacity ( int requestedLength ) : void
requestedLength	int
return	void

Clear() public method

Empty the buffer.

public Clear ( ) : void
return	void

Grow() protected method

Reallocate the buffer to be larger. For the new size, this uses the max of the requested length and double the current capacity. This does not shift, meaning it does not change the head or tail indices.

protected Grow ( int requestedLen ) : void
requestedLen	int	The new requested length.
return	void

IndexOf() public method

Find the first instance of a character in the buffer, and return its index. This returns -1 if the character is not found.

public IndexOf ( char c ) : int
c	char	The character to find.
return	int

Remove() public method

Remove a character at the specified index.

public Remove ( int i ) : void
i	int	The index of the character to remove.
return	void

Remove() public method

Remove a specified number of characters at the specified index.

public Remove ( int i, int n ) : void
i	int	The index of the characters to remove.
n	int	The number of characters to remove.
return	void

SetBuffer() public method

Overwrite this object's underlying buffer with the specified buffer.

public SetBuffer ( char b, int len ) : void
b	char	The character array.
len	int	The number of characters to consider filled /// in the input buffer.
return	void

ShiftToZero() protected method

Move the buffer contents such that headIndex becomes 0.

protected ShiftToZero ( ) : void
return	void

SpeedTest() public static method

Compare speed to StringBuilder.

public static SpeedTest ( ) : void
return	void

TestSelf() public static method

Simple self test.

public static TestSelf ( ) : bool
return	bool

ToString() public method

Return the current contents as a string.

public ToString ( ) : String
return	String

this() public method

Indexer.

public this ( int index ) : char
index	int
return	char