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19
20 package jode.expr;
21 import jode.type.Type;
22 import jode.type.ArrayType;
23 import jode.decompiler.TabbedPrintWriter;
24
25 public class ConstantArrayOperator extends Operator {
26 boolean isInitializer;
27 ConstOperator empty;
28 Type argType;
29
30 public ConstantArrayOperator(Type type, int size) {
31 super(type);
32 argType = (type instanceof ArrayType)
33 ? Type.tSubType(((ArrayType)type).getElementType()) : Type.tError;
34
35 Object  emptyVal;
36 if (argType == type.tError || argType.isOfType(Type.tUObject))
37 emptyVal = null;
38 else if (argType.isOfType(Type.tBoolUInt))
39 emptyVal = new Integer (0);
40 else if (argType.isOfType(Type.tLong))
41 emptyVal = new Long (0);
42 else if (argType.isOfType(Type.tFloat))
43 emptyVal = new Float (0);
44 else if (argType.isOfType(Type.tDouble))
45 emptyVal = new Double (0);
46 else
47 throw new IllegalArgumentException ("Illegal Type: "+argType);
48
49 empty = new ConstOperator(emptyVal);
50 empty.setType(argType);
51 empty.makeInitializer(argType);
52 initOperands(size);
53 for (int i=0; i < subExpressions.length; i++)
54 setSubExpressions(i, empty);
55 }
56
57 public void updateSubTypes() {
58 argType = (type instanceof ArrayType)
59 ? Type.tSubType(((ArrayType)type).getElementType()) : Type.tError;
60 for (int i=0; i< subExpressions.length; i++)
61 if (subExpressions[i] != null)
62 subExpressions[i].setType(argType);
63 }
64
65 public void updateType() {
66 }
67
68 public boolean setValue(int index, Expression value) {
69 if (index < 0 ||
70 index > subExpressions.length ||
71 subExpressions[index] != empty)
72 return false;
73 value.setType(argType);
74 setType(Type.tSuperType(Type.tArray(value.getType())));
75 subExpressions[index] = value;
76 value.parent = this;
77 value.makeInitializer(argType);
78 return true;
79 }
80
81 public int getPriority() {
82 return 200;
83 }
84
85 public void makeInitializer(Type type) {
86 if (type.getHint().isOfType(getType()))
87 isInitializer = true;
88 }
89
90 public Expression simplify() {
91 for (int i=0; i< subExpressions.length; i++) {
92 if (subExpressions[i] != null)
93 subExpressions[i] = subExpressions[i].simplify();
94 }
95 return this;
96 }
97
98 public void dumpExpression(TabbedPrintWriter writer)
99 throws java.io.IOException {
100 if (!isInitializer) {
101 writer.print("new ");
102 writer.printType(type.getHint());
103 writer.breakOp();
104 writer.print(" ");
105 }
106 writer.print("{ ");
107 writer.startOp(writer.EXPL_PAREN, 0);
108 for (int i=0; i< subExpressions.length; i++) {
109 if (i>0) {
110 writer.print(", ");
111 writer.breakOp();
112 }
113 if (subExpressions[i] != null)
114 subExpressions[i].dumpExpression(writer, 0);
115 else
116 empty.dumpExpression(writer, 0);
117 }
118 writer.endOp();
119 writer.print(" }");
120 }
121 }
122 |
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