Package eu.bandm.tools.rdparser

Class IncludingCharBuf.CharBuf

java.lang.Object

eu.bandm.tools.rdparser.IncludingCharBuf.CharBuf

Enclosing class:

IncludingCharBuf<D>

protected class IncludingCharBuf.CharBuf
extends Object

Auxiliary class for IncludingCharBuf, representing exactly one source of character data, ie the original file or inserted expansions.

Field Summary

Fields

Modifier and Type	Field	Description
protected static final int	CHUNKSIZE	How many characters to read when filling from file.
protected char[]	data	The complete data, read in when constructing the object.
protected IncludingCharBuf<D>.CharBuf	host	Chaining to calling CharBuf object.
protected int	len	The length of the complete data, in characters.
(package private) Location<D>	location	Position of the last bufferConsume().
protected int	pos	Current read position.
(package private) Location<D>	startLocation	Position of the first IncludingCharBuf.consume().

Constructor Summary

Constructors

Constructor	Description
CharBuf(char[] s, IncludingCharBuf<D>.CharBuf buf, Location<D> loc)	Create a new buffer, link it via host to the calling text, and take the array s as its character data.
CharBuf(Reader r, IncludingCharBuf<D>.CharBuf buf, Location<D> loc)	Create a new buffer, link it via host to the calling text, and fill it with all character data from r.

Method Summary

Modifier and Type	Method	Description
(package private) void	bufferConsume()	Advance position counter and line number, if linefeed is detected.
char	bufferLA(int k)	Look ahead to the next k-th character, either in its own data, or in the caller.
protected void	fill(Reader fr)	Fill the data from all contents of the reader, until its "eof".
(package private) boolean	isNewline(char c)	Decide if the next character is a newline.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

location

Location<D> location

Position of the last bufferConsume(). (May be one position beyond the exisiting data, but this will be detected by the caller bufferConsume() immediately.)

startLocation

Location<D> startLocation

Position of the first IncludingCharBuf.consume().

data

protected char[] data

The complete data, read in when constructing the object.

len

protected int len

The length of the complete data, in characters.

CHUNKSIZE

protected static final int CHUNKSIZE

How many characters to read when filling from file.

See Also:

• Constant Field Values

pos

protected int pos

Current read position.

host

protected IncludingCharBuf<D>.CharBuf host

Chaining to calling CharBuf object.

Constructor Details

CharBuf

public CharBuf(Reader r,
 IncludingCharBuf<D>.CharBuf buf,
 Location<D> loc)
        throws IOException

Create a new buffer, link it via host to the calling text, and fill it with all character data from r.

Parameters:

r - source

buf - calling predecessor

loc - location of the start of the data

Throws:

IOException

CharBuf

public CharBuf(char[] s,
 IncludingCharBuf<D>.CharBuf buf,
 Location<D> loc)

Create a new buffer, link it via host to the calling text, and take the array s as its character data.

Parameters:

s - a character store, directly used by the new buffer.

buf - calling predecessor

loc - location of the start of the data

Method Details

fill

protected void fill(Reader fr)
             throws IOException

Fill the data from all contents of the reader, until its "eof".

Throws:

IOException

bufferLA

public char bufferLA(int k)

Look ahead to the next k-th character, either in its own data, or in the caller. The next-to-consume character is looked at with k=0(zero).

bufferConsume

void bufferConsume()

Advance position counter and line number, if linefeed is detected. The switch-back to the including buffer, if this has reached its end, is made by the caller IncludingCharBuf.consume().

Assume that all input is normalized to "\n" = "^J" = linefeed. (windows cr and apple cr-lf have been replaced.)

isNewline

boolean isNewline(char c)

Decide if the next character is a newline. Assume that the input is normalized to "\n" = "^J" = linefeed. (windows cr and apple cr-lf have been replaced.)