ExpressionProcessor


1   package spoon.jdiet;
2   
3   import java.util.ArrayList  ;
4   import java.util.Collection  ;
5   import java.util.List  ;
6   import java.util.Map  ;
7   import java.util.Vector  ;
8   
9   import spoon.jdiet.rt.MapEntryImpl;
10  import spoon.processing.AbstractProcessor;
11  import spoon.reflect.code.CtExpression;
12  import spoon.reflect.factory.TypeFactory;
13  import spoon.reflect.reference.CtTypeReference;
14  
15  /**
16   * This processor replaces casts with a J2ME compliant equivalent type.
17   * 
18   * @author Lionel Seinturier <Lionel.Seinturier@lifl.fr>
19   */
20  public class ExpressionProcessor extends AbstractProcessor<CtExpression> {
21      
22      public void process(CtExpression expr) {
23          
24          TypeFactory tf = getFactory().Type();
25          
26          List  <CtTypeReference<?>> casts = expr.getTypeCasts();
27          List  <CtTypeReference<?>> newcasts = new ArrayList  <CtTypeReference<?>>();
28          for (CtTypeReference<?> cast : casts) {
29              
30              if( cast.isPrimitif() ) {
31                  newcasts.add(cast);
32                  continue;
33              }
34              
35              // Transform cast to Collection into cast to Vector
36              if( cast.isSubtypeOf(tf.createReference(Collection  .class)) ) {
37                  newcasts.add(tf.createReference(Vector  .class));
38              }
39  
40              // Transform cast to Map.Entry into cast to MapEntryImpl
41              else if( cast.isSubtypeOf(tf.createReference(Map.Entry  .class)) ) {
42                  newcasts.add(tf.createReference(MapEntryImpl.class));
43              }
44              
45              else {
46                  newcasts.add(cast);
47              }
48              
49              expr.setTypeCasts(newcasts);
50          }
51      }
52  
53  }
54
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