/*
 * Copyright (C) 2017 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
 */
"use strict";

class EnumType extends Type {
    constructor(origin, name, baseType)
    {
        super();
        this._origin = origin;
        this._name = name;
        this._baseType = baseType;
        this._members = new Map();
    }
    
    add(member)
    {
        if (this._members.has(member.name))
            throw new WTypeError(member.origin.originString, "Duplicate enum member name: " + member.name);
        member.enumType = this;
        this._members.set(member.name, member);
    }
    
    get origin() { return this._origin; }
    get name() { return this._name; }
    get baseType() { return this._baseType; }
    
    get memberNames() { return this._members.keys(); }
    memberByName(name) { return this._members.get(name); }
    get members() { return this._members.values(); }
    get memberMap() { return this._members; }
    
    get isPrimitive() { return true; }
    
    *allValues()
    {
        for (let member of this.members)
            yield {value: member.value.unifyNode.valueForSelectedType, name: member.name};
    }
    
    valuesEqual(a, b)
    {
        return this.baseType.unifyNode.valuesEqual(a, b);
    }
    
    populateDefaultValue(buffer, offset)
    {
        this.baseType.populateDefaultValue(buffer, offset);
    }
    
    get size() { return this.baseType.size; }
    
    toString()
    {
        return "enum " + this.name + " : " + this.baseType + " { " + Array.from(this.members).join(",") + " }";
    }
}