/*
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* %CopyrightBegin%
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*
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* Copyright Ericsson AB 2009. All Rights Reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* %CopyrightEnd%
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*/
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package com.ericsson.otp.erlang;
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import java.util.Arrays;
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public class OtpErlangFun extends OtpErlangObject {
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// don't change this!
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private static final long serialVersionUID = -3423031125356706472L;
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private final OtpErlangPid pid;
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private final String module;
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private final long index;
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private final long old_index;
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private final long uniq;
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private final OtpErlangObject[] freeVars;
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private final int arity;
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private final byte[] md5;
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public OtpErlangFun(final OtpInputStream buf)
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throws OtpErlangDecodeException {
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final OtpErlangFun f = buf.read_fun();
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pid = f.pid;
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module = f.module;
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arity = f.arity;
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md5 = f.md5;
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index = f.index;
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old_index = f.old_index;
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uniq = f.uniq;
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freeVars = f.freeVars;
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}
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public OtpErlangFun(final OtpErlangPid pid, final String module,
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final long index, final long uniq, final OtpErlangObject[] freeVars) {
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this.pid = pid;
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this.module = module;
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arity = -1;
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md5 = null;
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this.index = index;
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old_index = 0;
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this.uniq = uniq;
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this.freeVars = freeVars;
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}
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public OtpErlangFun(final OtpErlangPid pid, final String module,
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final int arity, final byte[] md5, final int index,
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final long old_index, final long uniq,
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final OtpErlangObject[] freeVars) {
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this.pid = pid;
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this.module = module;
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this.arity = arity;
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this.md5 = md5;
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this.index = index;
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this.old_index = old_index;
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this.uniq = uniq;
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this.freeVars = freeVars;
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}
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public void encode(final OtpOutputStream buf) {
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buf.write_fun(pid, module, old_index, arity, md5, index, uniq, freeVars);
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}
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public boolean equals(final Object o) {
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if (!(o instanceof OtpErlangFun)) {
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return false;
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}
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final OtpErlangFun f = (OtpErlangFun) o;
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if (!pid.equals(f.pid) || !module.equals(f.module) || arity != f.arity) {
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return false;
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}
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if (md5 == null) {
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if (f.md5 != null) {
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return false;
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}
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} else {
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if (!Arrays.equals(md5, f.md5)) {
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return false;
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}
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}
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if (index != f.index || uniq != f.uniq) {
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return false;
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}
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if (freeVars == null) {
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return f.freeVars == null;
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}
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return Arrays.equals(freeVars, f.freeVars);
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}
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protected int doHashCode() {
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final OtpErlangObject.Hash hash = new OtpErlangObject.Hash(1);
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hash.combine(pid.hashCode(), module.hashCode());
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hash.combine(arity);
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if (md5 != null) {
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hash.combine(md5);
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}
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hash.combine(index);
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hash.combine(uniq);
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if (freeVars != null) {
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for (final OtpErlangObject o : freeVars) {
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hash.combine(o.hashCode(), 1);
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}
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}
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return hash.valueOf();
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}
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public String toString() {
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return "#Fun<" + module + "." + old_index + "." + uniq + ">";
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}
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}
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