1 cananian 1.1.4.1 // HConstructor.java, created Sat Aug 1 4:54:58 1998 by cananian
2 cananian 1.1.4.1 // Copyright (C) 1998 C. Scott Ananian <cananian@alumni.princeton.edu>
3 cananian 1.1.4.1 // Licensed under the terms of the GNU GPL; see COPYING for details.
4 cananian 1.1.4.1 package harpoon.ClassFile;
5 cananian 1.1.4.1
6 cananian 1.1.4.1 import harpoon.Util.ArrayFactory;
7 cananian 1.1.4.1
8 cananian 1.1.4.1 import java.lang.reflect.Modifier;
9 cananian 1.1.4.1
10 cananian 1.1.4.1 /**
11 cananian 1.1.4.1 * An <code>HConstructorImpl</code> is a basic implementation of
12 cananian 1.1.4.1 * <code>HMethod</code>.
13 cananian 1.1.4.1 *
14 cananian 1.1.4.1 * @author C. Scott Ananian <cananian@alumni.princeton.edu>
15 cananian 1.2 * @version $Id: HConstructorImpl.java,v 1.2 2002/02/25 21:03:03 cananian Exp $
16 cananian 1.1.4.1 * @see HConstructor
17 cananian 1.1.4.1 */
18 cananian 1.1.4.1 abstract class HConstructorImpl extends HMethodImpl implements HConstructor {
19 cananian 1.1.4.1 HConstructorImpl() { name="<init>"; returnType=HClass.Void; }
20 cananian 1.1.4.1 /**
21 cananian 1.1.4.1 * Returns the name of this constructor, as a string. This is always
22 cananian 1.1.4.1 * the string "<code><init></code>".
23 cananian 1.1.4.1 */
24 cananian 1.1.4.1 public String getName() { return "<init>"/*hclass.getName()*/; }
25 cananian 1.1.4.1
26 cananian 1.1.4.1 /**
27 cananian 1.1.4.1 * Returns a hashcode for this Constructor. The hashcode is computed as
28 cananian 1.1.4.1 * the exclusive-or of the hashcodes for the underlying constructor's
29 cananian 1.1.4.1 * declaring class and the constructor's descriptor string.
30 cananian 1.1.4.1 */
31 cananian 1.1.4.1 public int hashCode() { return hashCode(this); }
32 cananian 1.1.4.1 // separated out for re-use
33 cananian 1.1.4.1 static int hashCode(HConstructor hc) {
34 cananian 1.1.4.1 return hc.getDeclaringClass().hashCode() ^ hc.getDescriptor().hashCode();
35 cananian 1.1.4.1 }
36 cananian 1.1.4.1
37 cananian 1.1.4.1 /**
38 cananian 1.1.4.1 * Return a string describing this Constructor. The string is formatted
39 cananian 1.1.4.1 * as: the constructor access modifiers, if any, followed by the
40 cananian 1.1.4.1 * fully-qualified name of the declaring class, followed by a
41 cananian 1.1.4.1 * parenthesized, comma-separated list of the constructor's formal
42 cananian 1.1.4.1 * parameter types. For example: <p>
43 cananian 1.1.4.1 * <DL><DD><CODE>public java.util.Hashtable(int,float)</CODE></DL><p>
44 cananian 1.1.4.1 * The only possible modifiers for constructors are the access modifiers
45 cananian 1.1.4.1 * <code>public</code>, <code>protected</code>, or <code>private</code>.
46 cananian 1.1.4.1 * Only one of these may appear, or none if the constructor has default
47 cananian 1.1.4.1 * (<code>package</code>) access.
48 cananian 1.1.4.1 */
49 cananian 1.1.4.1 public String toString() { return toString(this); }
50 cananian 1.1.4.1 // separated out for re-use.
51 cananian 1.1.4.1 static String toString(HConstructor hc) {
52 cananian 1.1.4.1 StringBuffer r = new StringBuffer();
53 cananian 1.1.4.1 int m = hc.getModifiers();
54 cananian 1.1.4.1 if (m!=0) {
55 cananian 1.1.4.1 r.append(Modifier.toString(m));
56 cananian 1.1.4.1 r.append(' ');
57 cananian 1.1.4.1 }
58 cananian 1.1.4.1 r.append(HClass.getTypeName(hc.getDeclaringClass()));
59 cananian 1.1.4.1 r.append('(');
60 cananian 1.1.4.1 HClass hcp[] = hc.getParameterTypes();
61 cananian 1.1.4.1 for (int i=0; i<hcp.length; i++) {
62 cananian 1.1.4.1 r.append(HClass.getTypeName(hcp[i]));
63 cananian 1.1.4.1 if (i<hcp.length-1)
64 cananian 1.1.4.1 r.append(',');
65 cananian 1.1.4.1 }
66 cananian 1.1.4.1 r.append(')');
67 cananian 1.1.4.1 HClass ecp[] = hc.getExceptionTypes();
68 cananian 1.1.4.1 if (ecp.length > 0) {
69 cananian 1.1.4.1 r.append(" throws ");
70 cananian 1.1.4.1 for (int i=0; i<ecp.length; i++) {
71 cananian 1.1.4.1 r.append(ecp[i].getName()); // can't be primitive or array type.
72 cananian 1.1.4.1 if (i<ecp.length-1)
73 cananian 1.1.4.1 r.append(',');
74 cananian 1.1.4.1 }
75 cananian 1.1.4.1 }
76 cananian 1.1.4.1 return r.toString();
77 cananian 1.1.4.1 }
78 cananian 1.2 }