1 cananian 1.1.2.1 // HClassArraySyn.java, created Fri Oct 20 17:34:37 2000 by cananian
2 cananian 1.1.2.1 // Copyright (C) 2000 C. Scott Ananian <cananian@alumni.princeton.edu>
3 cananian 1.1.2.1 // Licensed under the terms of the GNU GPL; see COPYING for details.
4 cananian 1.1.2.1 package harpoon.ClassFile;
5 cananian 1.1.2.1
6 cananian 1.1.2.1 import harpoon.Util.Util;
7 cananian 1.1.2.1
8 cananian 1.1.2.1 import java.util.ArrayList;
9 cananian 1.1.2.5 import java.util.Iterator;
10 cananian 1.1.2.1 import java.util.List;
11 cananian 1.1.2.1 /**
12 cananian 1.1.2.1 * <code>HClassArraySyn</code> is a simple subclass of
13 cananian 1.1.2.1 * <code>HClassArray</code> which allows you to add methods
14 cananian 1.1.2.1 * (not fields, class initializers, or constructors) to
15 cananian 1.1.2.1 * an array type.
16 cananian 1.1.2.1 *
17 cananian 1.1.2.1 * @author C. Scott Ananian <cananian@alumni.princeton.edu>
18 cananian 1.5 * @version $Id: HClassArraySyn.java,v 1.5 2004/02/08 03:21:10 cananian Exp $
19 cananian 1.1.2.1 */
20 cananian 1.1.2.1 class HClassArraySyn extends HClassArray implements HClassMutator {
21 cananian 1.1.2.4 final List declaredMethods = new ArrayList(4);
22 cananian 1.1.2.1
23 cananian 1.1.2.1 /** Creates a <code>HClassArraySyn</code>. */
24 cananian 1.1.2.1 HClassArraySyn(Linker linker, HClass baseType, int dims) {
25 cananian 1.1.2.6 this(linker, baseType, dims, true/*init w/ clone method*/);
26 cananian 1.1.2.6 }
27 cananian 1.1.2.6 private HClassArraySyn(Linker linker, HClass baseType, int dims,
28 cananian 1.1.2.6 boolean init) {
29 cananian 1.1.2.1 super(linker, baseType, dims);
30 cananian 1.1.2.6 if (init) // we skip this step when restoring from serialized form.
31 cananian 1.1.2.6 declaredMethods.add // even clone method is mutable.
32 cananian 1.1.2.6 (new HMethodSyn(this, cloneMethod.getName(), cloneMethod));
33 cananian 1.1.2.1 }
34 cananian 1.1.2.1 /** Allow mutation. */
35 cananian 1.1.2.1 public HClassMutator getMutator() { return this; }
36 cananian 1.1.2.3 public HMethod[] getDeclaredMethods() {
37 cananian 1.1.2.3 return (HMethod[])
38 cananian 1.1.2.3 declaredMethods.toArray(new HMethod[declaredMethods.size()]);
39 cananian 1.1.2.3 }
40 cananian 1.1.2.1
41 cananian 1.1.2.1 // Allowed mutations. -----------------------------------------
42 cananian 1.1.2.1 public HMethod addDeclaredMethod(String name, String descriptor) {
43 cananian 1.3.2.1 assert !name.equals("<init>") && !name.equals("<clinit>");
44 cananian 1.1.2.1 return addDeclaredMethod0(new HMethodSyn(this, name, descriptor));
45 cananian 1.1.2.1 }
46 cananian 1.1.2.1 public HMethod addDeclaredMethod(String name, HClass[] paramTypes,
47 cananian 1.1.2.1 HClass returnType) {
48 cananian 1.3.2.1 assert !name.equals("<init>") && !name.equals("<clinit>");
49 cananian 1.3.2.1 assert checkLinker(returnType);
50 cananian 1.1.2.1 for (int i=0; i<paramTypes.length; i++)
51 cananian 1.3.2.1 assert checkLinker(paramTypes[i]);
52 cananian 1.1.2.1 return addDeclaredMethod0(new HMethodSyn(this, name, paramTypes,
53 cananian 1.1.2.1 returnType));
54 cananian 1.1.2.1 }
55 cananian 1.1.2.1 public HMethod addDeclaredMethod(String name, HMethod template) {
56 cananian 1.3.2.1 assert !name.equals("<init>") && !name.equals("<clinit>");
57 cananian 1.1.2.1 return addDeclaredMethod0(new HMethodSyn(this, name, template));
58 cananian 1.1.2.1 }
59 cananian 1.1.2.1 /** single implementation. */
60 cananian 1.1.2.1 private HMethod addDeclaredMethod0(HMethodSyn hm) {
61 cananian 1.3.2.1 assert hm.getDeclaringClass()==this;
62 cananian 1.1.2.1 if (declaredMethods.contains(hm))
63 cananian 1.1.2.1 throw new DuplicateMemberException("Method "+hm+" in "+this);
64 cananian 1.1.2.1 declaredMethods.add(hm);
65 cananian 1.1.2.1 hasBeenModified=true; // flag the modification
66 cananian 1.1.2.1 return hm;
67 cananian 1.1.2.1 }
68 cananian 1.1.2.1 public void removeDeclaredMethod(HMethod m) throws NoSuchMethodError {
69 cananian 1.1.2.1 if (declaredMethods.remove(m)) {
70 cananian 1.1.2.1 hasBeenModified=true; // flag the modification
71 cananian 1.1.2.1 return;
72 cananian 1.1.2.1 }
73 cananian 1.1.2.1 throw new NoSuchMemberException("Method "+m+" in "+this);
74 cananian 1.1.2.1 }
75 cananian 1.1.2.1
76 cananian 1.1.2.1 // Unallowed mutations. ---------------------------------------
77 cananian 1.1.2.1 public HField addDeclaredField(String name, HClass type)
78 cananian 1.1.2.1 throws DuplicateMemberException {
79 cananian 1.1.2.1 throw new Error("Adding fields to arrays is not allowed.");
80 cananian 1.1.2.1 }
81 cananian 1.1.2.1 public HField addDeclaredField(String name, String descriptor)
82 cananian 1.1.2.1 throws DuplicateMemberException {
83 cananian 1.1.2.1 throw new Error("Adding fields to arrays is not allowed.");
84 cananian 1.1.2.1 }
85 cananian 1.1.2.1 public HField addDeclaredField(String name, HField template)
86 cananian 1.1.2.1 throws DuplicateMemberException {
87 cananian 1.1.2.1 throw new Error("Adding fields to arrays is not allowed.");
88 cananian 1.1.2.1 }
89 cananian 1.1.2.1 public void removeDeclaredField(HField f) throws NoSuchMemberException {
90 cananian 1.1.2.1 if (f==lengthField)
91 cananian 1.1.2.1 throw new Error("Removing the length fields from an array is not "+
92 cananian 1.1.2.1 "allowed.");
93 cananian 1.1.2.1 else throw new NoSuchMemberException(f.toString());
94 cananian 1.1.2.1 }
95 cananian 1.1.2.1 public HInitializer addClassInitializer() throws DuplicateMemberException {
96 cananian 1.1.2.1 throw new Error("Adding a class initializer to an array is not "+
97 cananian 1.1.2.1 "allowed.");
98 cananian 1.1.2.1 }
99 cananian 1.1.2.1 public void removeClassInitializer(HInitializer m)
100 cananian 1.1.2.1 throws NoSuchMemberException {
101 cananian 1.1.2.1 throw new NoSuchMemberException(m.toString());
102 cananian 1.1.2.1 }
103 cananian 1.1.2.1 public HConstructor addConstructor(String descriptor)
104 cananian 1.1.2.1 throws DuplicateMemberException {
105 cananian 1.1.2.1 throw new Error("Adding a constructor to an array is not allowed.");
106 cananian 1.1.2.1 }
107 cananian 1.1.2.1 public HConstructor addConstructor(HClass[] paramTypes)
108 cananian 1.1.2.1 throws DuplicateMemberException {
109 cananian 1.1.2.1 throw new Error("Adding a constructor to an array is not allowed.");
110 cananian 1.1.2.1 }
111 cananian 1.1.2.1 public HConstructor addConstructor(HConstructor template)
112 cananian 1.1.2.1 throws DuplicateMemberException {
113 cananian 1.1.2.1 throw new Error("Adding a constructor to an array is not allowed.");
114 cananian 1.1.2.1 }
115 cananian 1.1.2.1 public void removeConstructor(HConstructor c)
116 cananian 1.1.2.1 throws NoSuchMemberException {
117 cananian 1.1.2.1 throw new NoSuchMemberException(c.toString());
118 cananian 1.1.2.1 }
119 cananian 1.1.2.1 public void addInterface(HClass in) {
120 cananian 1.1.2.1 throw new Error("Not allowed to add interfaces to an array.");
121 cananian 1.1.2.1 }
122 cananian 1.1.2.1 public void removeInterface(HClass in)
123 cananian 1.1.2.1 throws NoSuchClassException {
124 cananian 1.1.2.1 throw new Error("Not allowed to remove interfaces from an array.");
125 cananian 1.1.2.1 }
126 cananian 1.1.2.1 public void removeAllInterfaces() {
127 cananian 1.1.2.1 throw new Error("Not allowed to remove interfaces from an array.");
128 cananian 1.1.2.1 }
129 cananian 1.1.2.1 public void addModifiers(int m) {
130 cananian 1.1.2.1 throw new Error("Not allowed to change the modifiers of an array.");
131 cananian 1.1.2.1 }
132 cananian 1.1.2.1 public void setModifiers(int m) {
133 cananian 1.1.2.1 throw new Error("Not allowed to change the modifiers of an array.");
134 cananian 1.1.2.1 }
135 cananian 1.1.2.1 public void removeModifiers(int m) {
136 cananian 1.1.2.1 throw new Error("Not allowed to change the modifiers of an array.");
137 cananian 1.1.2.1 }
138 cananian 1.1.2.1 public void setSuperclass(HClass sc) {
139 cananian 1.1.2.1 throw new Error("Not allowed to change the superclass of an array.");
140 cananian 1.1.2.1 }
141 cananian 1.1.2.1 public void setSourceFile(String sourcefilename) {
142 cananian 1.1.2.1 throw new Error("Not allowed to reset the source file of an array.");
143 cananian 1.1.2.1 }
144 cananian 1.1.2.1
145 cananian 1.1.2.1 //----------------------------------------------------------
146 cananian 1.1.2.1 // assertion helper.
147 cananian 1.1.2.1 private boolean checkLinker(HClass hc) {
148 cananian 1.1.2.1 return hc.isPrimitive() || hc.getLinker()==getLinker();
149 cananian 1.1.2.1 }
150 cananian 1.1.2.1 //----------------------------------------------------------
151 cananian 1.1.2.4
152 cananian 1.1.2.4 /** Serializable interface. */
153 cananian 1.1.2.4 public Object writeReplace() {
154 cananian 1.1.2.5 return new Stub(this);
155 cananian 1.1.2.4 }
156 cananian 1.1.2.4 private static final class Stub implements java.io.Serializable {
157 cananian 1.1.2.4 private final Linker linker;
158 cananian 1.1.2.4 private final HClass baseType;
159 cananian 1.1.2.4 private final int dims;
160 cananian 1.1.2.4 private final List declaredMethods;
161 cananian 1.1.2.4 private final boolean modified;
162 cananian 1.1.2.4 Stub(HClassArraySyn c) { // store salient information.
163 cananian 1.1.2.4 this.linker = c.getLinker();
164 cananian 1.1.2.4 this.baseType = c.baseType;
165 cananian 1.1.2.4 this.dims = c.dims;
166 cananian 1.1.2.4 this.modified = c.hasBeenModified;
167 cananian 1.1.2.6 this.declaredMethods = new ArrayList(c.declaredMethods.size());
168 cananian 1.5 for (Object hmO : c.declaredMethods) {
169 cananian 1.5 HMethod hm = (HMethod) hmO;
170 cananian 1.1.2.5 this.declaredMethods.add(new HClassSyn.MethodStub(hm));
171 cananian 1.1.2.5 }
172 cananian 1.1.2.4 }
173 cananian 1.1.2.4 public Object readResolve() {
174 cananian 1.1.2.6 HClassArraySyn c=new HClassArraySyn(linker, baseType, dims, false);
175 cananian 1.1.2.5 for (Iterator it=declaredMethods.iterator(); it.hasNext(); ) {
176 cananian 1.1.2.5 HMethod hm = ((HClassSyn.MethodStub)it.next()).reconstruct(c);
177 cananian 1.1.2.5 c.declaredMethods.add(hm);
178 cananian 1.1.2.5 }
179 cananian 1.1.2.4 c.hasBeenModified = this.modified;
180 cananian 1.1.2.4 return c;
181 cananian 1.1.2.4 }
182 cananian 1.1.2.4 }
183 cananian 1.2 }