|
1
30 package org.objectweb.asm.tree.analysis;
31
32 import org.objectweb.asm.Type;
33
34
41 public class BasicValue implements Value {
42
43 public final static Value UNINITIALIZED_VALUE = new BasicValue(null);
44
45 public final static Value INT_VALUE = new BasicValue(Type.INT_TYPE);
46
47 public final static Value FLOAT_VALUE = new BasicValue(Type.FLOAT_TYPE);
48
49 public final static Value LONG_VALUE = new BasicValue(Type.LONG_TYPE);
50
51 public final static Value DOUBLE_VALUE = new BasicValue(Type.DOUBLE_TYPE);
52
53 public final static Value REFERENCE_VALUE = new BasicValue(Type.getType("Ljava/lang/Object;"));
54
55 public final static Value RETURNADDRESS_VALUE = new BasicValue(null);
56
57 private Type type;
58
59 public BasicValue(final Type type) {
60 this.type = type;
61 }
62
63 public Type getType() {
64 return type;
65 }
66
67 public int getSize() {
68 return type == Type.LONG_TYPE || type == Type.DOUBLE_TYPE ? 2 : 1;
69 }
70
71 public boolean isReference() {
72 return type != null
73 && (type.getSort() == Type.OBJECT || type.getSort() == Type.ARRAY);
74 }
75
76 public boolean equals(final Object  value) {
77 if (value == this) {
78 return true;
79 } else if (value instanceof BasicValue) {
80 if (type == null) {
81 return ((BasicValue) value).type == null;
82 } else {
83 return type.equals(((BasicValue) value).type);
84 }
85 } else {
86 return false;
87 }
88 }
89
90 public int hashCode() {
91 return type == null ? 0 : type.hashCode();
92 }
93
94 public String toString() {
95 if (this == UNINITIALIZED_VALUE) {
96 return ".";
97 } else if (this == RETURNADDRESS_VALUE) {
98 return "A";
99 } else if (this == REFERENCE_VALUE) {
100 return "R";
101 } else {
102 return type.getDescriptor();
103 }
104 }
105 }
|
Popular Tags
|
Java API By Example, From Geeks To Geeks.