Package jflex.generator

Class PackEmitter

java.lang.Object

jflex.generator.PackEmitter

Direct Known Subclasses:

CountEmitter, HiLowEmitter

public abstract class PackEmitter
extends Object

Encodes int arrays as strings.

Also splits up strings when longer than 64K in UTF8 encoding. Subclasses emit unpacking code.

Usage protocol: p.emitInit();
for each data: p.emitData(data);
p.emitUnpack();

Version:

JFlex 1.8.1

Author:

Gerwin Klein

Field Summary

Fields

Modifier and Type	Field	Description
protected int	chunks	number of existing string chunks
protected String	name	name of the generated array (mixed case, no yy prefix)
protected StringBuilder	out	output buffer

Constructor Summary

Constructors

Constructor	Description
PackEmitter(String name)	Create new emitter for an array.

Method Summary

Modifier and Type	Method	Description
void	breaks()	Execute line/chunk break if necessary.
protected String	constName()	Convert array name into all uppercase internal scanner constant name.
void	emitInit()	Emit declaration of decoded member and open first chunk.
void	emitUC(int i)	Emit single unicode character.
abstract void	emitUnpack()	Emit the unpacking code.
protected void	nl()	emit newline
protected void	println(String s)	println.
String	toString()	Return current output buffer.

Methods inherited from class java.lang.Object

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

Field Detail

name

protected String name

name of the generated array (mixed case, no yy prefix)

out

protected StringBuilder out

output buffer

chunks

protected int chunks

number of existing string chunks

Constructor Detail

PackEmitter

public PackEmitter(String name)

Create new emitter for an array.

Parameters:

name - the name of the generated array

Method Detail

constName

protected String constName()

Convert array name into all uppercase internal scanner constant name.

Returns:

name as a internal constant name.

See Also:

name

toString

public String toString()

Return current output buffer.

Overrides:

toString in class Object

Returns:

a String object.

emitInit

public void emitInit()

Emit declaration of decoded member and open first chunk.

emitUC

public void emitUC(int i)

Emit single unicode character.

Updates length, position, etc.

Parameters:

i - the character to emit.

breaks

public void breaks()

Execute line/chunk break if necessary. Leave space for at least two chars.

emitUnpack

public abstract void emitUnpack()

Emit the unpacking code.

nl

protected void nl()

emit newline

println

protected void println(String s)

println.

Parameters:

s - a String object.