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Java > Open Source Codes > jas > Method


1 /**
2  * This is used to encapsulate a CodeAttr so it can be added
3  * into a class.
4  * @see ClassEnv#addMethod
5  * @author $Author: fqian $
6  * @version $Revision: 1.1 $
7  */
8 package jas;
9
10 import java.io.*;
11 import java.util.*;
12
13 public class Method
14 {
15   short acc;
16   CP name, sig;
17   CodeAttr code;
18   ExceptAttr excepts;
19   SyntheticAttr synthAttr = null;
20   DeprecatedAttr deprAttr = null;
21   SignatureAttr sigAttr = null;
22   VisibilityAnnotationAttr vis_annot_attr = null;
23   ParameterVisibilityAnnotationAttr param_vis_annot_attr = null;
24   AnnotationDefaultAttr annotDef = null;
25   Vector genericAttrs = new Vector();
26
27   /**
28    * @param macc method access permissions. It is a combination
29    * of the constants provided from RuntimeConstants
30    * @param name CP item representing name of method.
31    * @param sig CP item representing signature for object
32    * @param code The actual code for the object
33    * @param ex Any exceptions associated with object
34    */
35   public Method (short macc, CP name, CP sig, CodeAttr cd, ExceptAttr ex)
36   {
37     acc = macc;
38     this.name = name;
39     this.sig = sig;
40     code = cd; excepts = ex;
41   }
42
43   public Method (short macc, CP name, CP sig, CodeAttr cd, ExceptAttr ex, SyntheticAttr synth)
44   {
45     acc = macc;
46     this.name = name;
47     this.sig = sig;
48     code = cd; excepts = ex;
49     synthAttr = synth;
50   }
51     public void addGenericAttr(GenericAttr g)
52     {
53     genericAttrs.addElement(g);
54     }
55
56     public void addDeprecatedAttr(DeprecatedAttr d)
57     {
58         deprAttr = d;
59     }
60
61     public void addSignatureAttr(SignatureAttr s)
62     {
63         sigAttr = s;
64     }
65
66     public void addAnnotationAttr(VisibilityAnnotationAttr v)
67     {
68         vis_annot_attr = v;
69     }
70
71     public void addParamAnnotationAttr(ParameterVisibilityAnnotationAttr v)
72     {
73         param_vis_annot_attr = v;
74     }
75
76     public void addAnnotationDef(AnnotationDefaultAttr v)
77     {
78         annotDef = v;
79     }
80
81   void resolve(ClassEnv e)
82   {
83     e.addCPItem(name);
84     e.addCPItem(sig);
85     if (code != null) code.resolve(e);
86     if (excepts != null) excepts.resolve(e);
87     if (synthAttr != null) synthAttr.resolve(e);
88     if (deprAttr != null) deprAttr.resolve(e);
89     if (sigAttr != null) sigAttr.resolve(e);
90     if (vis_annot_attr != null) vis_annot_attr.resolve(e);
91     if (param_vis_annot_attr != null) param_vis_annot_attr.resolve(e);
92     if (annotDef != null) annotDef.resolve(e);
93   }
94
95   void write(ClassEnv e, DataOutputStream out)
96     throws IOException, jasError
97   {
98     short cnt = 0;
99     out.writeShort(acc);
100     out.writeShort(e.getCPIndex(name));
101     out.writeShort(e.getCPIndex(sig));
102     if (code != null) cnt ++;
103     if (excepts != null) cnt++;
104     cnt += genericAttrs.size();
105     if (synthAttr != null){
106         cnt++;
107     }
108     if (deprAttr != null){
109         cnt++;
110     }
111     if (sigAttr != null){
112         cnt++;
113     }
114     if (vis_annot_attr != null){
115         cnt++;
116     }
117     if (param_vis_annot_attr != null){
118         cnt++;
119     }
120     if (annotDef != null){
121         cnt++;
122     }
123     out.writeShort(cnt);
124     if (code != null) code.write(e, out);
125     if (excepts != null) excepts.write(e, out);
126     if (synthAttr != null) synthAttr.write(e, out);
127     if (deprAttr != null) deprAttr.write(e, out);
128     if (sigAttr != null) sigAttr.write(e, out);
129     if (vis_annot_attr != null) vis_annot_attr.write(e, out);
130     if (param_vis_annot_attr != null) param_vis_annot_attr.write(e, out);
131     if (annotDef != null) annotDef.write(e, out);
132     
133     for(Enumeration enu = genericAttrs.elements(); enu.hasMoreElements();) {
134     ((GenericAttr)enu.nextElement()).write(e, out);
135     }
136     
137   }
138 }
139
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