package bluej.parser;




| A span between two line/column locations.
|
| @author  Andrew Patterson
|
public class SourceSpan
{       
private SourceLocation start;
   
   private SourceLocation end;
    
   
   


| @param start  the line/column location where the span starts
| @param end    the line/column location where the span ends
|
public SourceSpan(SourceLocation start, SourceLocation end)
   {        
      this.start = start;
       
      this.end = end;     
      }
    
   
   


| @param start    the line/column location where the span starts
| @param numChars the number of characters (assumes span is only on one line)
|
public SourceSpan(SourceLocation start, int numChars)
   {        
      this.start = start;
       
      this.end = new SourceLocation(start.getLine(), start.getColumn() + numChars);     
      }

   
   


| Determine if a span crosses more that one line.
|
| @return  true if the span is only on one line.
|
public boolean isOneLine()
   {
      return (start.getLine() == end.getLine() );     
      }
    
   
   public SourceLocation getStartLocation()
   {        
      return start;     
      }

   
   public int getStartColumn()
   {
      return start.getColumn();     
      }

   
   public int getStartLine()
   {
      return start.getLine();     
      }

   
   public SourceLocation getEndLocation()
   {        
      return end;     
      }

   
   public int getEndColumn()
   {
      return end.getColumn();     
      }

   
   public int getEndLine()
   {
      return end.getLine();     
      }
    
   
   @Override
   
   public String toString()
   {
      return start.toString() + "-" + end.toString();     
      } 
   }