+++ /dev/null
-/* Generated By:JavaCC: Do not edit this line. JavaCharStream.java Version 4.1 */
-/* JavaCCOptions:STATIC=false */
-package org.apache.lucene.queryParser.standard.parser;
-
-/**
- * An implementation of interface CharStream, where the stream is assumed to
- * contain only ASCII characters (with java-like unicode escape processing).
- */
-
-public class JavaCharStream
-{
-/** Whether parser is static. */
- public static final boolean staticFlag = false;
- static final int hexval(char c) throws java.io.IOException {
- switch(c)
- {
- case '0' :
- return 0;
- case '1' :
- return 1;
- case '2' :
- return 2;
- case '3' :
- return 3;
- case '4' :
- return 4;
- case '5' :
- return 5;
- case '6' :
- return 6;
- case '7' :
- return 7;
- case '8' :
- return 8;
- case '9' :
- return 9;
-
- case 'a' :
- case 'A' :
- return 10;
- case 'b' :
- case 'B' :
- return 11;
- case 'c' :
- case 'C' :
- return 12;
- case 'd' :
- case 'D' :
- return 13;
- case 'e' :
- case 'E' :
- return 14;
- case 'f' :
- case 'F' :
- return 15;
- }
-
- throw new java.io.IOException(); // Should never come here
- }
-
-/** Position in buffer. */
- public int bufpos = -1;
- int bufsize;
- int available;
- int tokenBegin;
- 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[] nextCharBuf;
- protected char[] buffer;
- protected int maxNextCharInd = 0;
- protected int nextCharInd = -1;
- 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;
-
- 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;
-
- bufpos -= tokenBegin;
- }
- }
- catch (Throwable t)
- {
- throw new Error(t.getMessage());
- }
-
- available = (bufsize += 2048);
- tokenBegin = 0;
- }
-
- protected void FillBuff() throws java.io.IOException
- {
- int i;
- if (maxNextCharInd == 4096)
- maxNextCharInd = nextCharInd = 0;
-
- try {
- if ((i = inputStream.read(nextCharBuf, maxNextCharInd,
- 4096 - maxNextCharInd)) == -1)
- {
- inputStream.close();
- throw new java.io.IOException();
- }
- else
- maxNextCharInd += i;
- return;
- }
- catch(java.io.IOException e) {
- if (bufpos != 0)
- {
- --bufpos;
- backup(0);
- }
- else
- {
- bufline[bufpos] = line;
- bufcolumn[bufpos] = column;
- }
- throw e;
- }
- }
-
- protected char ReadByte() throws java.io.IOException
- {
- if (++nextCharInd >= maxNextCharInd)
- FillBuff();
-
- return nextCharBuf[nextCharInd];
- }
-
-/** @return starting character for token. */
- public char BeginToken() throws java.io.IOException
- {
- if (inBuf > 0)
- {
- --inBuf;
-
- if (++bufpos == bufsize)
- bufpos = 0;
-
- tokenBegin = bufpos;
- return buffer[bufpos];
- }
-
- tokenBegin = 0;
- bufpos = -1;
-
- return readChar();
- }
-
- protected void AdjustBuffSize()
- {
- if (available == bufsize)
- {
- if (tokenBegin > 2048)
- {
- bufpos = 0;
- available = tokenBegin;
- }
- else
- ExpandBuff(false);
- }
- else if (available > tokenBegin)
- available = bufsize;
- else if ((tokenBegin - available) < 2048)
- ExpandBuff(true);
- else
- available = tokenBegin;
- }
-
- 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];
- }
-
- char c;
-
- if (++bufpos == available)
- AdjustBuffSize();
-
- if ((buffer[bufpos] = c = ReadByte()) == '\\')
- {
- UpdateLineColumn(c);
-
- int backSlashCnt = 1;
-
- for (;;) // Read all the backslashes
- {
- if (++bufpos == available)
- AdjustBuffSize();
-
- try
- {
- if ((buffer[bufpos] = c = ReadByte()) != '\\')
- {
- UpdateLineColumn(c);
- // found a non-backslash char.
- if ((c == 'u') && ((backSlashCnt & 1) == 1))
- {
- if (--bufpos < 0)
- bufpos = bufsize - 1;
-
- break;
- }
-
- backup(backSlashCnt);
- return '\\';
- }
- }
- catch(java.io.IOException e)
- {
- if (backSlashCnt > 1)
- backup(backSlashCnt-1);
-
- return '\\';
- }
-
- UpdateLineColumn(c);
- backSlashCnt++;
- }
-
- // Here, we have seen an odd number of backslash's followed by a 'u'
- try
- {
- while ((c = ReadByte()) == 'u')
- ++column;
-
- buffer[bufpos] = c = (char)(hexval(c) << 12 |
- hexval(ReadByte()) << 8 |
- hexval(ReadByte()) << 4 |
- hexval(ReadByte()));
-
- column += 4;
- }
- catch(java.io.IOException e)
- {
- throw new Error("Invalid escape character at line " + line +
- " column " + column + ".");
- }
-
- if (backSlashCnt == 1)
- return c;
- else
- {
- backup(backSlashCnt - 1);
- return '\\';
- }
- }
- else
- {
- 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 end column. */
- public int getEndColumn() {
- return bufcolumn[bufpos];
- }
-
-/** Get end line. */
- public int getEndLine() {
- return bufline[bufpos];
- }
-
-/** @return column of token start */
- public int getBeginColumn() {
- return bufcolumn[tokenBegin];
- }
-
-/** @return line number of token start */
- public int getBeginLine() {
- return bufline[tokenBegin];
- }
-
-/** Retreat. */
- public void backup(int amount) {
-
- inBuf += amount;
- if ((bufpos -= amount) < 0)
- bufpos += bufsize;
- }
-
-/** Constructor. */
- public JavaCharStream(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];
- nextCharBuf = new char[4096];
- }
-
-/** Constructor. */
- public JavaCharStream(java.io.Reader dstream,
- int startline, int startcolumn)
- {
- this(dstream, startline, startcolumn, 4096);
- }
-
-/** Constructor. */
- public JavaCharStream(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];
- nextCharBuf = new char[4096];
- }
- prevCharIsLF = prevCharIsCR = false;
- tokenBegin = inBuf = maxNextCharInd = 0;
- nextCharInd = 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 JavaCharStream(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 JavaCharStream(java.io.InputStream dstream, int startline,
- int startcolumn, int buffersize)
- {
- this(new java.io.InputStreamReader(dstream), startline, startcolumn, 4096);
- }
-
-/** Constructor. */
- public JavaCharStream(java.io.InputStream dstream, String encoding, int startline,
- int startcolumn) throws java.io.UnsupportedEncodingException
- {
- this(dstream, encoding, startline, startcolumn, 4096);
- }
-
-/** Constructor. */
- public JavaCharStream(java.io.InputStream dstream, int startline,
- int startcolumn)
- {
- this(dstream, startline, startcolumn, 4096);
- }
-
-/** Constructor. */
- public JavaCharStream(java.io.InputStream dstream, String encoding) throws java.io.UnsupportedEncodingException
- {
- this(dstream, encoding, 1, 1, 4096);
- }
-
-/** Constructor. */
- public JavaCharStream(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, 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);
- }
-/** 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);
- }
-
- /** @return token image as String */
- 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);
- }
-
- /** @return 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;
- }
-
- /** Set buffers back to null when finished. */
- public void Done()
- {
- nextCharBuf = null;
- 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=f19c73b8f7faf94cc4a581e7b2933cc6 (do not edit this line) */
fnp / pylucene.git / blobdiff