content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you under the Apache License, Version 2.0 (the
   * "License"); you may not use this file except in compliance
   * with the License.  You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package org.apache.cassandra.cql3;
  
  import java.util.Objects;
  
  import org.antlr.runtime.Token;
  
  import static java.lang.Math.max;
  import static java.lang.Math.min;
  
  public class StatementSource
  {
      public static final StatementSource INTERNAL = new StatementSource(0, 0);
  
      public final int line;
      public final int charPositionInLine;
  
      public StatementSource(int line, int charPositionInLine)
      {
          this.line = line;
          this.charPositionInLine = charPositionInLine;
      }
  
      @Override
      public String toString()
      {
          if (this == INTERNAL)
          {
              return "<<<internal statement>>>";
          }
          else
          {
              if (!isEmpty())
                  return String.format("at [%d:%d]", line + 1, charPositionInLine + 1);
              else
                  return "";
          }
      }
  
      public boolean isEmpty()
      {
          return line > Character.MAX_VALUE || line == Character.MAX_VALUE && charPositionInLine > Character.MAX_VALUE;
      }
  
      // note - this can also reproduce the original statement raw text by getting TokenStream and calling toString(startToken, endToken)
      public static StatementSource create(Token startToken)
      {
          Objects.requireNonNull(startToken);
  
          if (startToken.getType() == Token.EOF)
              return new StatementSource(Character.MAX_VALUE + 1, 0);
  
          int startLine = min(max(startToken.getLine(), 1) - 1, Character.MAX_VALUE);
          int startChar = min(max(startToken.getCharPositionInLine(), 0), Character.MAX_VALUE);
  
          return new StatementSource(startLine, startChar);
      }
  
  }
  