01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one or more
03: * contributor license agreements. See the NOTICE file distributed with
04: * this work for additional information regarding copyright ownership.
05: * The ASF licenses this file to You under the Apache License, Version 2.0
06: * (the "License"); you may not use this file except in compliance with
07: * the License. You may obtain a copy of the License at
08: *
09: * http://www.apache.org/licenses/LICENSE-2.0
10: *
11: * Unless required by applicable law or agreed to in writing, software
12: * distributed under the License is distributed on an "AS IS" BASIS,
13: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14: * See the License for the specific language governing permissions and
15: * limitations under the License.
16: */
17: package org.apache.harmony.pack200.bytecode;
18:
19: import java.io.DataOutputStream;
20: import java.io.IOException;
21:
22: public abstract class ClassFileEntry {
23: protected static final ClassFileEntry[] NONE = new ClassFileEntry[0];
24: private boolean resolved;
25:
26: protected abstract void doWrite(DataOutputStream dos)
27: throws IOException;
28:
29: public abstract boolean equals(Object arg0);
30:
31: protected ClassFileEntry[] getNestedClassFileEntries() {
32: return NONE;
33: }
34:
35: public abstract int hashCode();
36:
37: /**
38: * Allows the constant pool entries to resolve their nested entries
39: *
40: * @param pool
41: */
42: protected void resolve(ClassConstantPool pool) {
43: resolved = true;
44: }
45:
46: protected boolean isResolved() {
47: return resolved;
48: }
49:
50: public abstract String toString();
51:
52: public final void write(DataOutputStream dos) throws IOException {
53: if (!resolved)
54: throw new IllegalStateException(
55: "Entry has not been resolved");
56: doWrite(dos);
57: }
58:
59: }
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