/*

 * Copyright (c) 2010, 2013, 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 jdk.nashorn.internal.codegen;

import static jdk.internal.org.objectweb.asm.Opcodes.IFEQ;

import static jdk.internal.org.objectweb.asm.Opcodes.IFGE;

import static jdk.internal.org.objectweb.asm.Opcodes.IFGT;

import static jdk.internal.org.objectweb.asm.Opcodes.IFLE;

import static jdk.internal.org.objectweb.asm.Opcodes.IFLT;

import static jdk.internal.org.objectweb.asm.Opcodes.IFNE;

import static jdk.internal.org.objectweb.asm.Opcodes.IF_ACMPEQ;

import static jdk.internal.org.objectweb.asm.Opcodes.IF_ACMPNE;

import static jdk.internal.org.objectweb.asm.Opcodes.IF_ICMPEQ;

import static jdk.internal.org.objectweb.asm.Opcodes.IF_ICMPGE;

import static jdk.internal.org.objectweb.asm.Opcodes.IF_ICMPGT;

import static jdk.internal.org.objectweb.asm.Opcodes.IF_ICMPLE;

import static jdk.internal.org.objectweb.asm.Opcodes.IF_ICMPLT;

import static jdk.internal.org.objectweb.asm.Opcodes.IF_ICMPNE;

/**

 * Condition enum used for all kinds of jumps, regardless of type

 */

enum Condition {

    EQ,

    NE,

    LE,

    LT,

    GE,

    GT;

    static int toUnary(final Condition c) {

        switch (c) {

        case EQ:

            return IFEQ;

        case NE:

            return IFNE;

        case LE:

            return IFLE;

        case LT:

            return IFLT;

        case GE:

            return IFGE;

        case GT:

            return IFGT;

        default:

            assert false;

            return -1;

        }

    }

    static int toBinary(final Condition c, final boolean isObject) {

        switch (c) {

        case EQ:

            return isObject ? IF_ACMPEQ : IF_ICMPEQ;

        case NE:

            return isObject ? IF_ACMPNE : IF_ICMPNE;

        case LE:

            return IF_ICMPLE;

        case LT:

            return IF_ICMPLT;

        case GE:

            return IF_ICMPGE;

        case GT:

            return IF_ICMPGT;

        default:

            assert false;

            return -1;

        }

    }

}