1 package serp.bytecode;
2
3 import serp.bytecode.visitor.*;
4
5 /***
6 * Store a value from the stack into an array.
7 *
8 * @author Abe White
9 */
10 public class ArrayStoreInstruction extends ArrayInstruction {
11 private static final Class[][] _mappings = new Class[][] {
12 { boolean.class, int.class },
13 { void.class, int.class },
14 };
15
16 ArrayStoreInstruction(Code owner) {
17 super(owner);
18 }
19
20 ArrayStoreInstruction(Code owner, int opcode) {
21 super(owner, opcode);
22 }
23
24 public int getLogicalStackChange() {
25 switch (getOpcode()) {
26 case Constants.NOP:
27 return 0;
28 default:
29 return -3;
30 }
31 }
32
33 public int getStackChange() {
34 switch (getOpcode()) {
35 case Constants.DASTORE:
36 case Constants.LASTORE:
37 return -4;
38 case Constants.NOP:
39 return 0;
40 default:
41 return -3;
42 }
43 }
44
45 public String getTypeName() {
46 switch (getOpcode()) {
47 case Constants.IASTORE:
48 return int.class.getName();
49 case Constants.LASTORE:
50 return long.class.getName();
51 case Constants.FASTORE:
52 return float.class.getName();
53 case Constants.DASTORE:
54 return double.class.getName();
55 case Constants.AASTORE:
56 return Object.class.getName();
57 case Constants.BASTORE:
58 return byte.class.getName();
59 case Constants.CASTORE:
60 return char.class.getName();
61 case Constants.SASTORE:
62 return short.class.getName();
63 default:
64 return null;
65 }
66 }
67
68 public TypedInstruction setType(String type) {
69 type = mapType(type, _mappings, true);
70 if (type == null)
71 return (TypedInstruction) setOpcode(Constants.NOP);
72
73 switch (type.charAt(0)) {
74 case 'i':
75 return (TypedInstruction) setOpcode(Constants.IASTORE);
76 case 'l':
77 return (TypedInstruction) setOpcode(Constants.LASTORE);
78 case 'f':
79 return (TypedInstruction) setOpcode(Constants.FASTORE);
80 case 'd':
81 return (TypedInstruction) setOpcode(Constants.DASTORE);
82 case 'b':
83 return (TypedInstruction) setOpcode(Constants.BASTORE);
84 case 'c':
85 return (TypedInstruction) setOpcode(Constants.CASTORE);
86 case 's':
87 return (TypedInstruction) setOpcode(Constants.SASTORE);
88 default:
89 return (TypedInstruction) setOpcode(Constants.AASTORE);
90 }
91 }
92
93 public void acceptVisit(BCVisitor visit) {
94 visit.enterArrayStoreInstruction(this);
95 visit.exitArrayStoreInstruction(this);
96 }
97 }