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/*
* %CopyrightBegin%
*
* Copyright Ericsson AB 2009. All Rights Reserved.
*
* The contents of this file are subject to the Erlang Public License,
* Version 1.1, (the "License"); you may not use this file except in
* compliance with the License. You should have received a copy of the
* Erlang Public License along with this software. If not, it can be
* retrieved online at http://www.erlang.org/.
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
* the License for the specific language governing rights and limitations
* under the License.
*
* %CopyrightEnd%
*/
package com.ericsson.otp.erlang;
import java.io.Serializable;
import java.util.Arrays;
public class OtpErlangFun extends OtpErlangObject implements Serializable {
// don't change this!
private static final long serialVersionUID = -3423031125356706472L;
private final OtpErlangPid pid;
private final String module;
private final long index;
private final long old_index;
private final long uniq;
private final OtpErlangObject[] freeVars;
private final int arity;
private final byte[] md5;
public OtpErlangFun(final OtpInputStream buf)
throws OtpErlangDecodeException {
final OtpErlangFun f = buf.read_fun();
pid = f.pid;
module = f.module;
arity = f.arity;
md5 = f.md5;
index = f.index;
old_index = f.old_index;
uniq = f.uniq;
freeVars = f.freeVars;
}
public OtpErlangFun(final OtpErlangPid pid, final String module,
final long index, final long uniq, final OtpErlangObject[] freeVars) {
this.pid = pid;
this.module = module;
arity = -1;
md5 = null;
this.index = index;
old_index = 0;
this.uniq = uniq;
this.freeVars = freeVars;
}
public OtpErlangFun(final OtpErlangPid pid, final String module,
final int arity, final byte[] md5, final int index,
final long old_index, final long uniq,
final OtpErlangObject[] freeVars) {
this.pid = pid;
this.module = module;
this.arity = arity;
this.md5 = md5;
this.index = index;
this.old_index = old_index;
this.uniq = uniq;
this.freeVars = freeVars;
}
@Override
public void encode(final OtpOutputStream buf) {
buf
.write_fun(pid, module, old_index, arity, md5, index, uniq,
freeVars);
}
@Override
public boolean equals(final Object o) {
if (!(o instanceof OtpErlangFun)) {
return false;
}
final OtpErlangFun f = (OtpErlangFun) o;
if (!pid.equals(f.pid) || !module.equals(f.module) || arity != f.arity) {
return false;
}
if (md5 == null) {
if (f.md5 != null) {
return false;
}
} else {
if (!md5.equals(f.md5)) {
return false;
}
}
if (index != f.index || uniq != f.uniq) {
return false;
}
if (freeVars == null) {
return f.freeVars == null;
}
return freeVars.equals(f.freeVars);
}
@Override
protected int doHashCode() {
OtpErlangObject.Hash hash = new OtpErlangObject.Hash(1);
hash.combine(pid.hashCode(), module.hashCode());
hash.combine(arity);
if (md5 != null) hash.combine(md5);
hash.combine(index);
hash.combine(uniq);
if (freeVars != null) {
for (OtpErlangObject o: freeVars) {
hash.combine(o.hashCode(), 1);
}
}
return hash.valueOf();
}
@Override
public String toString() {
return "#Fun<" + module + "." + old_index + "." + uniq + ">";
}
}
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