content: package com.alibaba.druid.sql.dialect.informix.parser;
  
  import com.alibaba.druid.sql.ast.SQLExpr;
  import com.alibaba.druid.sql.ast.statement.SQLSelectQueryBlock;
  import com.alibaba.druid.sql.parser.SQLExprParser;
  import com.alibaba.druid.sql.parser.SQLSelectListCache;
  import com.alibaba.druid.sql.parser.SQLSelectParser;
  import com.alibaba.druid.util.FnvHash;
  
  public class InformixSelectParser
          extends SQLSelectParser {
      public InformixSelectParser(SQLExprParser exprParser, SQLSelectListCache selectListCache) {
          super(exprParser, selectListCache);
      }
  
      protected void querySelectListBefore(SQLSelectQueryBlock queryBlock) {
          if (lexer.identifierEquals(FnvHash.Constants.SKIP)) {
              lexer.nextToken();
              SQLExpr offset = this.exprParser.primary();
              queryBlock.setOffset(offset);
          }
  
          if (lexer.identifierEquals(FnvHash.Constants.FIRST)) {
              lexer.nextToken();
              SQLExpr first = this.exprParser.primary();
              queryBlock.setFirst(first);
          }
      }
  }
  