Package org.codehaus.groovy.antlr

Class UnicodeEscapingReader

java.lang.Object

java.io.Reader

org.codehaus.groovy.antlr.UnicodeEscapingReader

All Implemented Interfaces:

Closeable, AutoCloseable, Readable

public class UnicodeEscapingReader
extends Reader

Translates GLS-defined unicode escapes into characters. Throws an exception in the event of an invalid unicode escape being detected.

No attempt has been made to optimize this class for speed or space.

Field Summary

Fields inherited from class java.io.Reader

lock

Constructor Summary

Constructors

Constructor	Description
UnicodeEscapingReader(Reader reader, SourceBuffer sourceBuffer)	Constructor.

Method Summary

Modifier and Type	Method	Description
void	close()	Closes this reader by calling close on the underlying reader.
int	getUnescapedUnicodeColumnCount()
int	getUnescapedUnicodeOffsetCount()
int	read()	Gets the next character from the underlying reader, translating escapes as required.
int	read(char[] cbuf, int off, int len)	Reads characters from the underlying reader.
void	setLexer(CharScanner lexer)	Sets the lexer that is using this reader.

Methods inherited from class java.io.Reader

mark, markSupported, nullReader, read, read, ready, reset, skip, transferTo

Methods inherited from class java.lang.Object

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

Constructor Detail

UnicodeEscapingReader

public UnicodeEscapingReader(Reader reader,
                             SourceBuffer sourceBuffer)

Constructor.

Parameters:

reader - The reader that this reader will filter over.

Method Detail

setLexer

public void setLexer(CharScanner lexer)

Sets the lexer that is using this reader. Must be called before the lexer is used.

read

public int read(char[] cbuf,
                int off,
                int len)
         throws IOException

Reads characters from the underlying reader.

Specified by:

read in class Reader

Throws:

IOException

See Also:

Reader.read(char[],int,int)

read

public int read()
         throws IOException

Gets the next character from the underlying reader, translating escapes as required.

Overrides:

read in class Reader

Throws:

IOException

See Also:

Reader.close()

getUnescapedUnicodeColumnCount

public int getUnescapedUnicodeColumnCount()

getUnescapedUnicodeOffsetCount

public int getUnescapedUnicodeOffsetCount()

close

public void close()
           throws IOException

Closes this reader by calling close on the underlying reader.

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Specified by:

close in class Reader

Throws:

IOException

See Also:

Reader.close()