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/* Generated By:JavaCC: Do not edit this line. ASCII_UCodeESC_CharStream.java Version 0.7pre6 */
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* Cobertura - http://cobertura.sourceforge.net/
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* This file was taken from JavaNCSS
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* http://www.kclee.com/clemens/java/javancss/
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* Copyright (C) 2000 Chr. Clemens Lee <clemens a.t kclee d.o.t com>
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* Cobertura is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published
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* by the Free Software Foundation; either version 2 of the License,
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* or (at your option) any later version.
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* Cobertura is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with Cobertura; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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package net.sourceforge.cobertura.javancss;
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* An implementation of interface CharStream, where the stream is assumed to
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* contain only ASCII characters (with java-like unicode escape processing).
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public final class ASCII_UCodeESC_CharStream
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public static final boolean staticFlag = false;
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private static final int hexval(char c) throws java.io.IOException
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throw new java.io.IOException(); // Should never come here
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private int bufpos = -1;
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private int available;
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private int tokenBegin;
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private int bufline[];
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private int bufcolumn[];
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private int column = 0;
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private java.io.Reader inputStream;
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private boolean prevCharIsCR = false;
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private boolean prevCharIsLF = false;
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private char[] nextCharBuf;
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private char[] buffer;
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private int maxNextCharInd = 0;
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private int nextCharInd = -1;
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private int inBuf = 0;
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private final void expandBuff(boolean wrapAround)
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char[] newbuffer = new char[bufsize + 2048];
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int newbufline[] = new int[bufsize + 2048];
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int newbufcolumn[] = new int[bufsize + 2048];
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System.arraycopy(buffer, tokenBegin, newbuffer, 0, bufsize - tokenBegin);
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System.arraycopy(buffer, 0, newbuffer, bufsize - tokenBegin, bufpos);
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System.arraycopy(bufline, tokenBegin, newbufline, 0, bufsize - tokenBegin);
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System.arraycopy(bufline, 0, newbufline, bufsize - tokenBegin, bufpos);
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bufline = newbufline;
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System.arraycopy(bufcolumn, tokenBegin, newbufcolumn, 0, bufsize - tokenBegin);
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System.arraycopy(bufcolumn, 0, newbufcolumn, bufsize - tokenBegin, bufpos);
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bufcolumn = newbufcolumn;
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bufpos += (bufsize - tokenBegin);
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System.arraycopy(buffer, tokenBegin, newbuffer, 0, bufsize - tokenBegin);
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System.arraycopy(bufline, tokenBegin, newbufline, 0, bufsize - tokenBegin);
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bufline = newbufline;
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System.arraycopy(bufcolumn, tokenBegin, newbufcolumn, 0, bufsize - tokenBegin);
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bufcolumn = newbufcolumn;
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bufpos -= tokenBegin;
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throw new Error(t.getMessage());
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available = (bufsize += 2048);
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private final void fillBuff() throws java.io.IOException
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if (maxNextCharInd == 4096)
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maxNextCharInd = nextCharInd = 0;
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if ((i = inputStream.read(nextCharBuf, maxNextCharInd, 4096 - maxNextCharInd)) == -1)
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throw new java.io.IOException();
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catch (java.io.IOException e)
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bufline[bufpos] = line;
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bufcolumn[bufpos] = column;
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private final char readByte() throws java.io.IOException
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if (++nextCharInd >= maxNextCharInd)
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return nextCharBuf[nextCharInd];
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public final char beginToken() throws java.io.IOException
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return buffer[tokenBegin = (bufpos == bufsize - 1) ? (bufpos = 0) : ++bufpos];
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private final void adjustBuffSize()
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if (available == bufsize)
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if (tokenBegin > 2048)
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available = tokenBegin;
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else if (available > tokenBegin)
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else if ((tokenBegin - available) < 2048)
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available = tokenBegin;
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private final void updateLineColumn(char c)
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prevCharIsLF = false;
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line += (column = 1);
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else if (prevCharIsCR)
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prevCharIsCR = false;
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line += (column = 1);
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column += (8 - (column & 07));
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bufline[bufpos] = line;
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bufcolumn[bufpos] = column;
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public final char readChar() throws java.io.IOException
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return buffer[(bufpos == bufsize - 1) ? (bufpos = 0) : ++bufpos];
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if (++bufpos == available)
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if (((buffer[bufpos] = c = (char)((char)0xff & readByte())) == '\\'))
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int backSlashCnt = 1;
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for (;;) // Read all the backslashes
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if (++bufpos == available)
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if ((buffer[bufpos] = c = (char)((char)0xff & readByte())) != '\\')
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// found a non-backslash char.
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if ((c == 'u') && ((backSlashCnt & 1) == 1))
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bufpos = bufsize - 1;
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backup(backSlashCnt);
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catch (java.io.IOException e)
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if (backSlashCnt > 1)
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backup(backSlashCnt);
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// Here, we have seen an odd number of backslash's followed by a 'u'
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while ((c = (char)((char)0xff & readByte())) == 'u')
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buffer[bufpos] = c = (char)(hexval(c) << 12
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| hexval((char)((char)0xff & readByte())) << 8
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| hexval((char)((char)0xff & readByte())) << 4 | hexval((char)((char)0xff & readByte())));
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catch (java.io.IOException e)
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throw new Error("Invalid escape character at line " + line + " column " + column
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if (backSlashCnt == 1)
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backup(backSlashCnt - 1);
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public final int getEndColumn()
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return bufcolumn[bufpos];
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public final int getEndLine()
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return bufline[bufpos];
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public final int getBeginColumn()
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return bufcolumn[tokenBegin];
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public final int getBeginLine()
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return bufline[tokenBegin];
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public final void backup(int amount)
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if ((bufpos -= amount) < 0)
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private ASCII_UCodeESC_CharStream(java.io.Reader dstream, int startline, int startcolumn,
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inputStream = dstream;
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column = startcolumn - 1;
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available = bufsize = buffersize;
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buffer = new char[buffersize];
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bufline = new int[buffersize];
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bufcolumn = new int[buffersize];
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nextCharBuf = new char[4096];
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public ASCII_UCodeESC_CharStream(java.io.InputStream dstream, int startline, int startcolumn)
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this(new java.io.InputStreamReader(dstream), startline, startcolumn, 4096);
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public final String getImage()
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if (bufpos >= tokenBegin)
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return new String(buffer, tokenBegin, bufpos - tokenBegin + 1);
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return new String(buffer, tokenBegin, bufsize - tokenBegin)
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+ new String(buffer, 0, bufpos + 1);
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public final char[] getSuffix(int len)
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char[] ret = new char[len];
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if ((bufpos + 1) >= len)
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System.arraycopy(buffer, bufpos - len + 1, ret, 0, len);
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System.arraycopy(buffer, bufsize - (len - bufpos - 1), ret, 0, len - bufpos - 1);
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System.arraycopy(buffer, 0, ret, len - bufpos - 1, bufpos + 1);
added
removed
src/net/sourceforge/cobertura/javancss/ASCII_UCodeESC_CharStream.java
