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1 package polyglot.ext.jl.types;
2
3 import polyglot.types.*;
4 import polyglot.util.*;
5
6
9 public class FieldInstance_c extends VarInstance_c implements FieldInstance
10 {
11 protected ReferenceType container;
12
13
14 protected FieldInstance_c() { }
15
16 public FieldInstance_c(TypeSystem ts, Position pos,
17 ReferenceType container,
18 Flags flags, Type type, String  name) {
19 super(ts, pos, flags, type, name);
20 this.container = container;
21 }
22
23 public ReferenceType container() {
24 return container;
25 }
26
27
28 public void setConstantValue(Object constantValue) {
29 if (! (constantValue == null) &&
30 ! (constantValue instanceof Boolean ) &&
31 ! (constantValue instanceof Number ) &&
32 ! (constantValue instanceof Character ) &&
33 ! (constantValue instanceof String )) {
34
35 throw new InternalCompilerError(
36 "Can only set constant value to a primitive or String.");
37 }
38
39 this.constantValue = constantValue;
40 this.isConstant = true;
41 }
42
43
44 public FieldInstance constantValue(Object constantValue) {
45 if (this.constantValue != constantValue) {
46 FieldInstance_c n = (FieldInstance_c) copy();
47 n.setConstantValue(constantValue);
48 return n;
49 }
50 return this;
51 }
52
53 public FieldInstance container(ReferenceType container) {
54 if (this.container != container) {
55 FieldInstance_c n = (FieldInstance_c) copy();
56 n.container = container;
57 return n;
58 }
59 return this;
60 }
61
62 public FieldInstance flags(Flags flags) {
63 if (!flags.equals(this.flags)) {
64 FieldInstance_c n = (FieldInstance_c) copy();
65 n.flags = flags;
66 return n;
67 }
68 return this;
69 }
70
71 public FieldInstance name(String name) {
72 if ((name != null && !name.equals(this.name)) ||
73 (name == null && name != this.name)) {
74 FieldInstance_c n = (FieldInstance_c) copy();
75 n.name = name;
76 return n;
77 }
78 return this;
79 }
80
81 public FieldInstance type(Type type) {
82 if (this.type != type) {
83 FieldInstance_c n = (FieldInstance_c) copy();
84 n.type = type;
85 return n;
86 }
87 return this;
88 }
89
90 public boolean equalsImpl(TypeObject o) {
91 if (o instanceof FieldInstance) {
92 FieldInstance i = (FieldInstance) o;
93 return super.equalsImpl(i) && ts.equals(container, i.container());
94 }
95
96 return false;
97 }
98
99 public String toString() {
100 Object v = constantValue;
101 if (v instanceof String ) {
102 String s = (String ) v;
103
104 if (s.length() > 8) {
105 s = s.substring(0, 8) + "...";
106 }
107
108 v = "\"" + s + "\"";
109 }
110
111 return "field " + flags.translate() + type + " " + name +
112 (v != null ? (" = " + v) : "");
113 }
114
115 public boolean isCanonical() {
116 return container.isCanonical() && type.isCanonical();
117 }
118 }
119 |
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