org.jruby.lexer.yacc

Class ByteArrayLexerSource.PushbackCursor

java.lang.Object

org.jruby.lexer.yacc.ByteArrayLexerSource.PushbackCursor

All Implemented Interfaces:

ByteArrayLexerSource.Cursor

Enclosing class:

ByteArrayLexerSource

class ByteArrayLexerSource.PushbackCursor
extends java.lang.Object
implements ByteArrayLexerSource.Cursor

Field Summary

Fields

Modifier and Type	Field and Description
private ByteArrayLexerSource.Cursor	parent
private org.jruby.util.ByteList	region

Constructor Summary

Constructors

Constructor and Description
PushbackCursor(ByteArrayLexerSource.Cursor prev, org.jruby.util.ByteList region)

Method Summary

Modifier and Type	Method and Description
int	at(int offset) Read the character at the offset given without moving the cursor
int	read()
void	unread(int c)

Methods inherited from class java.lang.Object

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

Field Detail

parent

private final ByteArrayLexerSource.Cursor parent

region

private final org.jruby.util.ByteList region

Constructor Detail

PushbackCursor

public PushbackCursor(ByteArrayLexerSource.Cursor prev,
                      org.jruby.util.ByteList region)

Method Detail

read

public int read()

Specified by:

read in interface ByteArrayLexerSource.Cursor

unread

public void unread(int c)

Specified by:

unread in interface ByteArrayLexerSource.Cursor

at

public int at(int offset)

Description copied from interface: ByteArrayLexerSource.Cursor

Read the character at the offset given without moving the cursor

Specified by:

at in interface ByteArrayLexerSource.Cursor

Parameters:

offset - relative to the current cursor position; -1 means previous character

Returns:

the character at that offset