/*

 * Copyright (c) 2014, 2015, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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package com.sun.tools.sjavac.pubapi;

import java.io.Serializable;

import java.util.List;

import java.util.Set;

import java.util.stream.Collectors;

import javax.lang.model.element.Modifier;

public class PubMethod implements Serializable {

    private static final long serialVersionUID = -7813050194553446243L;

    Set<Modifier> modifiers;

    List<PubApiTypeParam> typeParams;

    TypeDesc returnType;

    String identifier;

    List<TypeDesc> paramTypes;

    List<TypeDesc> throwDecls;

    public PubMethod(Set<Modifier> modifiers,

                     List<PubApiTypeParam> typeParams,

                     TypeDesc returnType,

                     String identifier,

                     List<TypeDesc> paramTypes,

                     List<TypeDesc> throwDecls) {

        this.modifiers = modifiers;

        this.typeParams = typeParams;

        this.returnType = returnType;

        this.identifier = identifier;

        this.paramTypes = paramTypes;

        this.throwDecls = throwDecls;

    }

    // We need to include return type and type parameters to be sure to have

    // different values for different methods. (A method can be overloaded with

    // the only difference being the upper bound of the return type.)

    public String asSignatureString() {

        StringBuilder sb = new StringBuilder();

        // <A extends String, Serializable, B extends List>

        if (typeParams.size() > 0) {

            sb.append(typeParams.stream()

                                .map(PubApiTypeParam::asString)

                                .collect(Collectors.joining(",", "<", "> ")));

        }

        sb.append(TypeDesc.encodeAsString(returnType));

        sb.append(" ");

        sb.append(identifier);

        sb.append("(");

        sb.append(paramTypes.stream()

                            .map(TypeDesc::encodeAsString)

                            .collect(Collectors.joining(",")));

        sb.append(")");

        return sb.toString();

    }

    @Override

    public boolean equals(Object obj) {

        if (getClass() != obj.getClass())

            return false;

        PubMethod other = (PubMethod) obj;

        return modifiers.equals(other.modifiers)

            && typeParams.equals(other.typeParams)

            && returnType.equals(other.returnType)

            && identifier.equals(other.identifier)

            && paramTypes.equals(other.paramTypes)

            && throwDecls.equals(other.throwDecls);

    }

    @Override

    public int hashCode() {

        return modifiers.hashCode()

             ^ typeParams.hashCode()

             ^ returnType.hashCode()

             ^ identifier.hashCode()

             ^ paramTypes.hashCode()

             ^ throwDecls.hashCode();

    }

    public String toString() {

        return String.format("%s[modifiers: %s, typeParams: %s, retType: %s, identifier: %s, params: %s, throws: %s]",

                             getClass().getSimpleName(),

                             modifiers,

                             typeParams,

                             returnType,

                             identifier,

                             paramTypes,

                             throwDecls);

    }

}