persistence.antlr.debug.DebuggingInputBuffer Maven / Gradle / Ivy
package persistence.antlr.debug;
import persistence.antlr.InputBuffer;
import persistence.antlr.CharStreamException;
import java.util.Vector;
import java.io.IOException;
public class DebuggingInputBuffer extends InputBuffer {
private InputBuffer buffer;
private InputBufferEventSupport inputBufferEventSupport;
private boolean debugMode = true;
public DebuggingInputBuffer(InputBuffer buffer) {
this.buffer = buffer;
inputBufferEventSupport = new InputBufferEventSupport(this);
}
public void addInputBufferListener(InputBufferListener l) {
inputBufferEventSupport.addInputBufferListener(l);
}
public void consume() {
char la = ' ';
try {la = buffer.LA(1);}
catch (CharStreamException e) {} // vaporize it...
buffer.consume();
if (debugMode)
inputBufferEventSupport.fireConsume(la);
}
public void fill(int a) throws CharStreamException {
buffer.fill(a);
}
public Vector getInputBufferListeners() {
return inputBufferEventSupport.getInputBufferListeners();
}
public boolean isDebugMode() {
return debugMode;
}
public boolean isMarked() {
return buffer.isMarked();
}
public char LA(int i) throws CharStreamException {
char la = buffer.LA(i);
if (debugMode)
inputBufferEventSupport.fireLA(la,i);
return la;
}
public int mark() {
int m = buffer.mark();
inputBufferEventSupport.fireMark(m);
return m;
}
public void removeInputBufferListener(InputBufferListener l) {
if (inputBufferEventSupport != null)
inputBufferEventSupport.removeInputBufferListener(l);
}
public void rewind(int mark) {
buffer.rewind(mark);
inputBufferEventSupport.fireRewind(mark);
}
public void setDebugMode(boolean value) {
debugMode = value;
}
}