/* ====================================================================
*
* The ObjectStyle Group Software License, Version 1.0
*
* Copyright (c) 2002 -2006 The ObjectStyle Group
* and individual authors of the software. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution, if
* any, must include the following acknowlegement:
* "This product includes software developed by the
* ObjectStyle Group (http://objectstyle.org/)."
* Alternately, this acknowlegement may appear in the software itself,
* if and wherever such third-party acknowlegements normally appear.
*
* 4. The names "ObjectStyle Group" and "Cayenne"
* must not be used to endorse or promote products derived
* from this software without prior written permission. For written
* permission, please contact andrus@objectstyle.org.
*
* 5. Products derived from this software may not be called "ObjectStyle"
* nor may "ObjectStyle" appear in their names without prior written
* permission of the ObjectStyle Group.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE OBJECTSTYLE GROUP OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the ObjectStyle Group. For more
* information on the ObjectStyle Group, please see
* <http://objectstyle.org/>.
*
*/
/*
* Generated By:JavaCC: Do not edit this line. SimpleCharStream.java Version
* 3.0
*/
package org.objectstyle.woenvironment.util;
/**
* An implementation of interface CharStream, where the stream is assumed to
* contain only ASCII characters (without unicode processing).
*/
@SuppressWarnings("all")
public class SimpleCharStream {
public static final boolean staticFlag = false;
int bufsize;
int available;
int tokenBegin;
public int bufpos = -1;
protected int bufline[];
protected int bufcolumn[];
protected int column = 0;
protected int line = 1;
protected boolean prevCharIsCR = false;
protected boolean prevCharIsLF = false;
protected java.io.Reader inputStream;
protected char[] buffer;
protected int maxNextCharInd = 0;
protected int inBuf = 0;
protected void ExpandBuff(boolean wrapAround) {
char[] newbuffer = new char[bufsize + 2048];
int newbufline[] = new int[bufsize + 2048];
int newbufcolumn[] = new int[bufsize + 2048];
try {
if (wrapAround) {
System.arraycopy(buffer, tokenBegin, newbuffer, 0, bufsize - tokenBegin);
System.arraycopy(buffer, 0, newbuffer, bufsize - tokenBegin, bufpos);
buffer = newbuffer;
System.arraycopy(bufline, tokenBegin, newbufline, 0, bufsize - tokenBegin);
System.arraycopy(bufline, 0, newbufline, bufsize - tokenBegin, bufpos);
bufline = newbufline;
System.arraycopy(bufcolumn, tokenBegin, newbufcolumn, 0, bufsize - tokenBegin);
System.arraycopy(bufcolumn, 0, newbufcolumn, bufsize - tokenBegin, bufpos);
bufcolumn = newbufcolumn;
maxNextCharInd = (bufpos += (bufsize - tokenBegin));
} else {
System.arraycopy(buffer, tokenBegin, newbuffer, 0, bufsize - tokenBegin);
buffer = newbuffer;
System.arraycopy(bufline, tokenBegin, newbufline, 0, bufsize - tokenBegin);
bufline = newbufline;
System.arraycopy(bufcolumn, tokenBegin, newbufcolumn, 0, bufsize - tokenBegin);
bufcolumn = newbufcolumn;
maxNextCharInd = (bufpos -= tokenBegin);
}
} catch (Throwable t) {
throw new Error(t.getMessage());
}
bufsize += 2048;
available = bufsize;
tokenBegin = 0;
}
protected void FillBuff() throws java.io.IOException {
if (maxNextCharInd == available) {
if (available == bufsize) {
if (tokenBegin > 2048) {
bufpos = maxNextCharInd = 0;
available = tokenBegin;
} else if (tokenBegin < 0)
bufpos = maxNextCharInd = 0;
else
ExpandBuff(false);
} else if (available > tokenBegin)
available = bufsize;
else if ((tokenBegin - available) < 2048)
ExpandBuff(true);
else
available = tokenBegin;
}
int i;
try {
if ((i = inputStream.read(buffer, maxNextCharInd, available - maxNextCharInd)) == -1) {
inputStream.close();
throw new java.io.IOException();
}
maxNextCharInd += i;
return;
} catch (java.io.IOException e) {
--bufpos;
backup(0);
if (tokenBegin == -1)
tokenBegin = bufpos;
throw e;
}
}
public char BeginToken() throws java.io.IOException {
tokenBegin = -1;
char c = readChar();
tokenBegin = bufpos;
return c;
}
protected void UpdateLineColumn(char c) {
column++;
if (prevCharIsLF) {
prevCharIsLF = false;
line += (column = 1);
} else if (prevCharIsCR) {
prevCharIsCR = false;
if (c == '\n') {
prevCharIsLF = true;
} else
line += (column = 1);
}
switch (c) {
case '\r':
prevCharIsCR = true;
break;
case '\n':
prevCharIsLF = true;
break;
case '\t':
column--;
column += (8 - (column & 07));
break;
default:
break;
}
bufline[bufpos] = line;
bufcolumn[bufpos] = column;
}
public char readChar() throws java.io.IOException {
if (inBuf > 0) {
--inBuf;
if (++bufpos == bufsize)
bufpos = 0;
return buffer[bufpos];
}
if (++bufpos >= maxNextCharInd)
FillBuff();
char c = buffer[bufpos];
UpdateLineColumn(c);
return (c);
}
/**
* @deprecated
* @see #getEndColumn
*/
public int getColumn() {
return bufcolumn[bufpos];
}
/**
* @deprecated
* @see #getEndLine
*/
public int getLine() {
return bufline[bufpos];
}
public int getEndColumn() {
return bufcolumn[bufpos];
}
public int getEndLine() {
return bufline[bufpos];
}
public int getBeginColumn() {
return bufcolumn[tokenBegin];
}
public int getBeginLine() {
return bufline[tokenBegin];
}
public void backup(int amount) {
inBuf += amount;
if ((bufpos -= amount) < 0)
bufpos += bufsize;
}
public SimpleCharStream(java.io.Reader dstream, int startline, int startcolumn, int buffersize) {
inputStream = dstream;
line = startline;
column = startcolumn - 1;
available = bufsize = buffersize;
buffer = new char[buffersize];
bufline = new int[buffersize];
bufcolumn = new int[buffersize];
}
public SimpleCharStream(java.io.Reader dstream, int startline, int startcolumn) {
this(dstream, startline, startcolumn, 4096);
}
public SimpleCharStream(java.io.Reader dstream) {
this(dstream, 1, 1, 4096);
}
public void ReInit(java.io.Reader dstream, int startline, int startcolumn, int buffersize) {
inputStream = dstream;
line = startline;
column = startcolumn - 1;
if (buffer == null || buffersize != buffer.length) {
available = bufsize = buffersize;
buffer = new char[buffersize];
bufline = new int[buffersize];
bufcolumn = new int[buffersize];
}
prevCharIsLF = prevCharIsCR = false;
tokenBegin = inBuf = maxNextCharInd = 0;
bufpos = -1;
}
public void ReInit(java.io.Reader dstream, int startline, int startcolumn) {
ReInit(dstream, startline, startcolumn, 4096);
}
public void ReInit(java.io.Reader dstream) {
ReInit(dstream, 1, 1, 4096);
}
public SimpleCharStream(java.io.InputStream dstream, int startline, int startcolumn) {
this(new java.io.InputStreamReader(dstream), startline, startcolumn, 4096);
}
public SimpleCharStream(java.io.InputStream dstream) {
this(dstream, 1, 1);
}
public void ReInit(java.io.InputStream dstream) {
ReInit(dstream, 1, 1);
}
public void ReInit(java.io.InputStream dstream, int startline, int startcolumn) {
ReInit(dstream, startline, startcolumn);
}
public String GetImage() {
if (bufpos >= tokenBegin) {
return new String(buffer, tokenBegin, bufpos - tokenBegin + 1);
}
return new String(buffer, tokenBegin, bufsize - tokenBegin) + new String(buffer, 0, bufpos + 1);
}
public char[] GetSuffix(int len) {
char[] ret = new char[len];
if ((bufpos + 1) >= len)
System.arraycopy(buffer, bufpos - len + 1, ret, 0, len);
else {
System.arraycopy(buffer, bufsize - (len - bufpos - 1), ret, 0, len - bufpos - 1);
System.arraycopy(buffer, 0, ret, len - bufpos - 1, bufpos + 1);
}
return ret;
}
public void Done() {
buffer = null;
bufline = null;
bufcolumn = null;
}
}