content: /* Generated By:JavaCC: Do not edit this line. SimpleCharStream.java Version 5.0 */
  /* JavaCCOptions:STATIC=false,SUPPORT_CLASS_VISIBILITY_PUBLIC=true */
  package org.opencyc.parser;
  
  /**
   * An implementation of interface CharStream, where the stream is assumed to
   * contain only ASCII characters (without unicode processing).
   */
  
  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 = 8;
  
    protected void setTabSize(int i) { tabSize = i; }
    protected int getTabSize(int i) { 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];
    }
  
  }
  /* JavaCC - OriginalChecksum=2fb69701c4235bab9c25983c0d6ab705 (do not edit this line) */
  