/* Generated By:JavaCC: Do not edit this line. SimpleCharStream.java Version 7.0 */
/* JavaCCOptions:STATIC=false,SUPPORT_CLASS_VISIBILITY_PUBLIC=true */
package org.apache.el.parser;
/**
* An implementation of interface CharStream , where the stream is assumed to
* contain only ASCII characters ( without unicode processing ) .
*/
@SuppressWarnings("all" ) // Ignore warnings in generated code
public class SimpleCharStream
{
/** Whether parser is static. */
public static final boolean staticFlag = false ;
int bufsize;
int available;
int tokenBegin;
/** Position in buffer. */
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 int tabSize = 1 ;
protected boolean trackLineColumn = true ;
public void setTabSize(int i) { tabSize = i; }
public int getTabSize() { return tabSize; }
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;
}
}
/** Start. */
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 += (tabSize - (column % tabSize));
break ;
default :
break ;
}
bufline[bufpos] = line;
bufcolumn[bufpos] = column;
}
/** Read a character. */
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
/**
* @ deprecated
* @ see # getEndColumn
*/
public int getColumn() {
return bufcolumn[bufpos];
}
@Deprecated
/**
* @ deprecated
* @ see # getEndLine
*/
public int getLine() {
return bufline[bufpos];
}
/** Get token end column number. */
public int getEndColumn() {
return bufcolumn[bufpos];
}
/** Get token end line number. */
public int getEndLine() {
return bufline[bufpos];
}
/** Get token beginning column number. */
public int getBeginColumn() {
return bufcolumn[tokenBegin];
}
/** Get token beginning line number. */
public int getBeginLine() {
return bufline[tokenBegin];
}
/** Backup a number of characters. */
public void backup(int amount) {
inBuf += amount;
if ((bufpos -= amount) < 0 ) {
bufpos += bufsize;
}
}
/** Constructor. */
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];
}
/** Constructor. */
public SimpleCharStream(java.io.Reader dstream, int startline,
int startcolumn)
{
this (dstream, startline, startcolumn, 4096 );
}
/** Constructor. */
public SimpleCharStream(java.io.Reader dstream)
{
this (dstream, 1 , 1 , 4096 );
}
/** Reinitialise. */
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 ;
}
/** Reinitialise. */
public void ReInit(java.io.Reader dstream, int startline,
int startcolumn)
{
ReInit(dstream, startline, startcolumn, 4096 );
}
/** Reinitialise. */
public void ReInit(java.io.Reader dstream)
{
ReInit(dstream, 1 , 1 , 4096 );
}
/** Constructor. */
public SimpleCharStream(java.io.InputStream dstream, String encoding, int startline,
int startcolumn, int buffersize) throws java.io.UnsupportedEncodingException
{
this (encoding == null ? new java.io.InputStreamReader(dstream) : new java.io.InputStreamReader(dstream, encoding), startline, startcolumn, buffersize);
}
/** Constructor. */
public SimpleCharStream(java.io.InputStream dstream, int startline,
int startcolumn, int buffersize)
{
this (new java.io.InputStreamReader(dstream), startline, startcolumn, buffersize);
}
/** Constructor. */
public SimpleCharStream(java.io.InputStream dstream, String encoding, int startline,
int startcolumn) throws java.io.UnsupportedEncodingException
{
this (dstream, encoding, startline, startcolumn, 4096 );
}
/** Constructor. */
public SimpleCharStream(java.io.InputStream dstream, int startline,
int startcolumn)
{
this (dstream, startline, startcolumn, 4096 );
}
/** Constructor. */
public SimpleCharStream(java.io.InputStream dstream, String encoding) throws java.io.UnsupportedEncodingException
{
this (dstream, encoding, 1 , 1 , 4096 );
}
/** Constructor. */
public SimpleCharStream(java.io.InputStream dstream)
{
this (dstream, 1 , 1 , 4096 );
}
/** Reinitialise. */
public void ReInit(java.io.InputStream dstream, String encoding, int startline,
int startcolumn, int buffersize) throws java.io.UnsupportedEncodingException
{
ReInit(encoding == null ? new java.io.InputStreamReader(dstream) : new java.io.InputStreamReader(dstream, encoding), startline, startcolumn, buffersize);
}
/** Reinitialise. */
public void ReInit(java.io.InputStream dstream, int startline,
int startcolumn, int buffersize)
{
ReInit(new java.io.InputStreamReader(dstream), startline, startcolumn, buffersize);
}
/** Reinitialise. */
public void ReInit(java.io.InputStream dstream, String encoding) throws java.io.UnsupportedEncodingException
{
ReInit(dstream, encoding, 1 , 1 , 4096 );
}
/** Reinitialise. */
public void ReInit(java.io.InputStream dstream)
{
ReInit(dstream, 1 , 1 , 4096 );
}
/** Reinitialise. */
public void ReInit(java.io.InputStream dstream, String encoding, int startline,
int startcolumn) throws java.io.UnsupportedEncodingException
{
ReInit(dstream, encoding, startline, startcolumn, 4096 );
}
/** Reinitialise. */
public void ReInit(java.io.InputStream dstream, int startline,
int startcolumn)
{
ReInit(dstream, startline, startcolumn, 4096 );
}
/** Get token literal value. */
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 );
}
}
/** Get the suffix. */
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;
}
/** Reset buffer when finished. */
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];
}
boolean getTrackLineColumn() { return trackLineColumn; }
void setTrackLineColumn(boolean tlc) { trackLineColumn = tlc; }
}
/* JavaCC - OriginalChecksum=1f3491e3824e8fdde2ac2b6c2dc76fe6 (do not edit this line) */
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