content: package com.alibaba.qlexpress4.aparser;
  
  import org.antlr.v4.runtime.BufferedTokenStream;
  import org.antlr.v4.runtime.RuleContext;
  import org.antlr.v4.runtime.Token;
  import org.antlr.v4.runtime.TokenSource;
  import org.antlr.v4.runtime.TokenStream;
  import org.antlr.v4.runtime.misc.Interval;
  
  public class AliasTokenStream implements TokenStream {
      
      private final BufferedTokenStream stream;
      
      private final ParserOperatorManager operatorManager;
      
      public AliasTokenStream(BufferedTokenStream stream, ParserOperatorManager operatorManager) {
          this.stream = stream;
          this.operatorManager = operatorManager;
      }
      
      @Override
      public Token LT(int k) {
          return SyntaxTreeFactory.preHandleToken(stream.LT(k), operatorManager);
      }
      
      @Override
      public Token get(int index) {
          return SyntaxTreeFactory.preHandleToken(stream.get(index), operatorManager);
      }
      
      @Override
      public TokenSource getTokenSource() {
          return new AliasTokenSource(stream.getTokenSource(), operatorManager);
      }
      
      @Override
      public String getText(Interval interval) {
          return stream.getText(interval);
      }
      
      @Override
      public String getText() {
          return stream.getText();
      }
      
      @Override
      public String getText(RuleContext ctx) {
          return stream.getText(ctx);
      }
      
      @Override
      public String getText(Token start, Token stop) {
          return stream.getText(start, stop);
      }
      
      @Override
      public void consume() {
          stream.consume();
      }
      
      @Override
      public int LA(int i) {
          return SyntaxTreeFactory.preHandleToken(LT(i), operatorManager).getType();
      }
      
      @Override
      public int mark() {
          return stream.mark();
      }
      
      @Override
      public void release(int marker) {
          stream.release(marker);
      }
      
      @Override
      public int index() {
          return stream.index();
      }
      
      @Override
      public void seek(int index) {
          stream.seek(index);
      }
      
      @Override
      public int size() {
          return stream.size();
      }
      
      @Override
      public String getSourceName() {
          return stream.getSourceName();
      }
  }
  