package org.hibernate.tool.ide.completion;
import java.io.CharArrayReader;
import org.hibernate.hql.antlr.HqlBaseLexer;
import antlr.Token;
import antlr.TokenStreamException;
/**
* A lexer implemented on top of the Antlr grammer implemented in core.
*
* @author Max Rydahl Andersen
*
*/
public class AntlrSimpleHQLLexer implements SimpleHQLLexer {
private HqlBaseLexer lexer;
private Token token;
public AntlrSimpleHQLLexer(char[] cs, int length) {
lexer = new HqlBaseLexer(new CharArrayReader(cs, 0, length)) {
public void newline() {
//super.newline();
}
public int getColumn() {
return super.getColumn()-1;
}
};
lexer.setTabSize(1);
}
public int getTokenLength() {
if(token.getText()==null) {
return 0;
}
return token.getText().length();
}
public int getTokenOffset() {
return token.getColumn()-1;
}
public int nextTokenId() {
try {
token = lexer.nextToken();
if(token==null) {
System.out.println(token);
}
}
catch (TokenStreamException e) {
throw new SimpleLexerException(e);
}
return token.getType();
}
}