SourceJob


1   package polyglot.frontend;
2   
3   import polyglot.ast.*;
4   
5   import java.util.*;
6   
7   /**
8    * A <code>SourceJob</code> encapsulates work done by the compiler on behalf of
9    * one source file.  It includes all information carried between phases
10   * of the compiler.
11   */
12  public class SourceJob extends Job
13  {
14      /**
15       * The <code>Source</code> that this <code>Job</code> is for.
16       */
17      protected Source source;
18  
19      /** 
20       * Set of <code>Source</code>s that this SourceJob depends upon.
21       * This will include, but is not limited to, the other Sources that
22       * this SourceJob caused to load.
23       */
24      protected Set dependencies;
25  
26      /**
27       * Set of <code>Source</code>s that depend on this job.
28       */
29      protected Set dependents;
30  
31      /** 
32       * Constructor 
33       */
34      public SourceJob(ExtensionInfo lang, 
35                       JobExt ext, 
36                       Source source, 
37                       Node ast) {
38          super(lang, ext, ast);
39  
40          this.source = source;
41          this.dependencies = new HashSet();
42          this.dependents = new HashSet();
43  
44      }
45  
46      public Set dependencies() {
47          return dependencies;
48      }
49      
50      public Set dependents() {
51          return dependents;
52      }
53  
54      public void addDependent(Source s) {
55          if (s != this.source()) {
56              dependents.add(s);
57          }
58      }
59  
60      public void addDependency(Source s) {
61          if (s != this.source()) {
62              dependencies.add(s);
63          }
64      }
65  
66      /**
67       * The initial list of passes is just the list that the language extension
68       * provides us with.
69       */
70      public List getPasses() {
71          return lang.passes(this);
72      }
73  
74      public Source source() {
75          return source;
76      }
77  
78      public SourceJob sourceJob() {
79      return this;
80      }
81  
82      public String   toString() {
83          return source.toString() + " (" +
84              (completed() ? "done"
85                      : ((isRunning() ? "running "
86                                      : "before ") + nextPass())) + ")";
87      }
88  }
89
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