bundles/org.eclipse.wst.jsdt.web.core/src/org/eclipse/wst/jsdt/web/core/internal/java/jspel/SimpleCharStream.java - sourceediting/webtools.sourceediting - Git at Google

 /*******************************************************************************
  * Copyright (c) 2005 BEA Systems and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  *     BEA Systems - initial implementation
  *
  *******************************************************************************/
 /* Generated By:JavaCC: Do not edit this line. SimpleCharStream.java Version 3.0 */
 package org.eclipse.wst.jsdt.web.core.internal.java.jspel;

 /**
  * An implementation of interface CharStream, where the stream is assumed to
  * contain only ASCII characters (without unicode processing).
  */

 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();
 			} else {
 				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
 	 */

 	@Deprecated
 	public int getColumn() {
 		return bufcolumn[bufpos];
 	}

 	/**
 	 * @deprecated
 	 * @see #getEndLine
 	 */

 	@Deprecated
 	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, int buffersize) {
 		this(new java.io.InputStreamReader(dstream), startline, startcolumn,
 				4096);
 	}

 	public SimpleCharStream(java.io.InputStream dstream, int startline,
 			int startcolumn) {
 		this(dstream, startline, startcolumn, 4096);
 	}

 	public SimpleCharStream(java.io.InputStream dstream) {
 		this(dstream, 1, 1, 4096);
 	}

 	public void ReInit(java.io.InputStream dstream, int startline,
 			int startcolumn, int buffersize) {
 		ReInit(new java.io.InputStreamReader(dstream), startline, startcolumn,
 				4096);
 	}

 	public void ReInit(java.io.InputStream dstream) {
 		ReInit(dstream, 1, 1, 4096);
 	}

 	public void ReInit(java.io.InputStream dstream, int startline,
 			int startcolumn) {
 		ReInit(dstream, startline, startcolumn, 4096);
 	}

 	public String GetImage() {
 		if (bufpos >= tokenBegin) {
 			return new String(buffer, tokenBegin, bufpos - tokenBegin + 1);
 		} else {
 			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;
 	}

 	/**
 	 * Method to adjust line and column numbers for the start of a token.
 	 */
 	public void adjustBeginLineColumn(int newLine, int newCol) {
 		int start = tokenBegin;
 		int len;

 		if (bufpos >= tokenBegin) {
 			len = bufpos - tokenBegin + inBuf + 1;
 		} else {
 			len = bufsize - tokenBegin + bufpos + 1 + inBuf;
 		}

 		int i = 0, j = 0, k = 0;
 		int nextColDiff = 0, columnDiff = 0;

 		while (i < len
 				&& bufline[j = start % bufsize] == bufline[k = ++start
 						% bufsize]) {
 			bufline[j] = newLine;
 			nextColDiff = columnDiff + bufcolumn[k] - bufcolumn[j];
 			bufcolumn[j] = newCol + columnDiff;
 			columnDiff = nextColDiff;
 			i++;
 		}

 		if (i < len) {
 			bufline[j] = newLine++;
 			bufcolumn[j] = newCol + columnDiff;

 			while (i++ < len) {
 				if (bufline[j = start % bufsize] != bufline[++start % bufsize]) {
 					bufline[j] = newLine++;
 				} else {
 					bufline[j] = newLine;
 				}
 			}
 		}

 		line = bufline[j];
 		column = bufcolumn[j];
 	}

 }
	/*******************************************************************************
	* Copyright (c) 2005 BEA Systems and others.
	* All rights reserved. This program and the accompanying materials
	* are made available under the terms of the Eclipse Public License v1.0
	* which accompanies this distribution, and is available at
	* http://www.eclipse.org/legal/epl-v10.html
	*
	* Contributors:
	* BEA Systems - initial implementation
	*
	*******************************************************************************/
	/* Generated By:JavaCC: Do not edit this line. SimpleCharStream.java Version 3.0 */
	package org.eclipse.wst.jsdt.web.core.internal.java.jspel;

	/**
	* An implementation of interface CharStream, where the stream is assumed to
	* contain only ASCII characters (without unicode processing).
	*/

	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();
	} else {
	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
	*/

	@Deprecated
	public int getColumn() {
	return bufcolumn[bufpos];
	}

	/**
	* @deprecated
	* @see #getEndLine
	*/

	@Deprecated
	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, int buffersize) {
	this(new java.io.InputStreamReader(dstream), startline, startcolumn,
	4096);
	}

	public SimpleCharStream(java.io.InputStream dstream, int startline,
	int startcolumn) {
	this(dstream, startline, startcolumn, 4096);
	}

	public SimpleCharStream(java.io.InputStream dstream) {
	this(dstream, 1, 1, 4096);
	}

	public void ReInit(java.io.InputStream dstream, int startline,
	int startcolumn, int buffersize) {
	ReInit(new java.io.InputStreamReader(dstream), startline, startcolumn,
	4096);
	}

	public void ReInit(java.io.InputStream dstream) {
	ReInit(dstream, 1, 1, 4096);
	}

	public void ReInit(java.io.InputStream dstream, int startline,
	int startcolumn) {
	ReInit(dstream, startline, startcolumn, 4096);
	}

	public String GetImage() {
	if (bufpos >= tokenBegin) {
	return new String(buffer, tokenBegin, bufpos - tokenBegin + 1);
	} else {
	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;
	}

	/**
	* Method to adjust line and column numbers for the start of a token.
	*/
	public void adjustBeginLineColumn(int newLine, int newCol) {
	int start = tokenBegin;
	int len;

	if (bufpos >= tokenBegin) {
	len = bufpos - tokenBegin + inBuf + 1;
	} else {
	len = bufsize - tokenBegin + bufpos + 1 + inBuf;
	}

	int i = 0, j = 0, k = 0;
	int nextColDiff = 0, columnDiff = 0;

	while (i < len
	&& bufline[j = start % bufsize] == bufline[k = ++start
	% bufsize]) {
	bufline[j] = newLine;
	nextColDiff = columnDiff + bufcolumn[k] - bufcolumn[j];
	bufcolumn[j] = newCol + columnDiff;
	columnDiff = nextColDiff;
	i++;
	}

	if (i < len) {
	bufline[j] = newLine++;
	bufcolumn[j] = newCol + columnDiff;

	while (i++ < len) {
	if (bufline[j = start % bufsize] != bufline[++start % bufsize]) {
	bufline[j] = newLine++;
	} else {
	bufline[j] = newLine;
	}
	}
	}

	line = bufline[j];
	column = bufcolumn[j];
	}

	}