/*

 * Copyright (c) 2013, 2014, 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.

 *

 * 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

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

package org.graalvm.compiler.phases.common.inlining.info;

import org.graalvm.compiler.graph.Node;

import org.graalvm.compiler.nodes.Invoke;

import org.graalvm.compiler.phases.common.inlining.info.elem.Inlineable;

import org.graalvm.compiler.phases.util.Providers;

import jdk.vm.ci.meta.ResolvedJavaMethod;

/**

 * Represents an inlining opportunity where the compiler can statically determine a monomorphic

 * target method and therefore is able to determine the called method exactly.

 */

public class ExactInlineInfo extends AbstractInlineInfo {

    protected final ResolvedJavaMethod concrete;

    private Inlineable inlineableElement;

    private boolean suppressNullCheck;

    public ExactInlineInfo(Invoke invoke, ResolvedJavaMethod concrete) {

        super(invoke);

        this.concrete = concrete;

        assert concrete != null;

    }

    public void suppressNullCheck() {

        suppressNullCheck = true;

    }

    @Override

    public EconomicSet<Node> inline(Providers providers) {

        return inline(invoke, concrete, inlineableElement, !suppressNullCheck);

    }

    @Override

    public void tryToDevirtualizeInvoke(Providers providers) {

        // nothing todo, can already be bound statically

    }

    @Override

    public int numberOfMethods() {

        return 1;

    }

    @Override

    public ResolvedJavaMethod methodAt(int index) {

        assert index == 0;

        return concrete;

    }

    @Override

    public double probabilityAt(int index) {

        assert index == 0;

        return 1.0;

    }

    @Override

    public double relevanceAt(int index) {

        assert index == 0;

        return 1.0;

    }

    @Override

    public String toString() {

        return "exact " + concrete.format("%H.%n(%p):%r");

    }

    @Override

    public Inlineable inlineableElementAt(int index) {

        assert index == 0;

        return inlineableElement;

    }

    @Override

    public void setInlinableElement(int index, Inlineable inlineableElement) {

        assert index == 0;

        this.inlineableElement = inlineableElement;

    }

    @Override

    public boolean shouldInline() {

        return concrete.shouldBeInlined();

    }

}