/*
 * Copyright (c) 2011, 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
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 * questions.
 */


package org.graalvm.compiler.nodes;

import org.graalvm.compiler.graph.Node;
import org.graalvm.compiler.nodes.CallTargetNode.InvokeKind;
import org.graalvm.compiler.nodes.java.MethodCallTargetNode;
import org.graalvm.compiler.nodes.spi.Lowerable;
import org.graalvm.compiler.nodes.type.StampTool;

import jdk.vm.ci.meta.ResolvedJavaMethod;
import jdk.vm.ci.meta.ResolvedJavaType;

public interface Invoke extends StateSplit, Lowerable, DeoptimizingNode.DeoptDuring, FixedNodeInterface, Invokable {

    FixedNode next();

    void setNext(FixedNode x);

    CallTargetNode callTarget();

    @Override
    int bci();

    Node predecessor();

    ValueNode classInit();

    void setClassInit(ValueNode node);

    void intrinsify(Node node);

    boolean useForInlining();

    void setUseForInlining(boolean value);

    
True if this invocation is almost certainly polymorphic, false when in doubt.
/**
     * True if this invocation is almost certainly polymorphic, false when in doubt.
     */
    boolean isPolymorphic();

    void setPolymorphic(boolean value);

    @Override
    default ResolvedJavaMethod getTargetMethod() {
        return callTarget() != null ? callTarget().targetMethod() : null;
    }

    
Returns the method from which this invoke is executed. This is the caller method and in the case of inlining may be different from the method of the graph this node is in. 
Returns:
the method from which this invoke is executed./**
     * Returns the {@linkplain ResolvedJavaMethod method} from which this invoke is executed. This
     * is the caller method and in the case of inlining may be different from the method of the
     * graph this node is in.
     *
     * @return the method from which this invoke is executed.
     */
    default ResolvedJavaMethod getContextMethod() {
        FrameState state = stateAfter();
        if (state == null) {
            state = stateDuring();
        }
        return state.getMethod();
    }

    
Returns the type from which this invoke is executed. This is the declaring type of the caller method. 
Returns:
the type from which this invoke is executed./**
     * Returns the {@linkplain ResolvedJavaType type} from which this invoke is executed. This is
     * the declaring type of the caller method.
     *
     * @return the type from which this invoke is executed.
     */
    default ResolvedJavaType getContextType() {
        ResolvedJavaMethod contextMethod = getContextMethod();
        if (contextMethod == null) {
            return null;
        }
        return contextMethod.getDeclaringClass();
    }

    @Override
    default void computeStateDuring(FrameState stateAfter) {
        FrameState newStateDuring = stateAfter.duplicateModifiedDuringCall(bci(), asNode().getStackKind());
        setStateDuring(newStateDuring);
    }

    default ValueNode getReceiver() {
        assert getInvokeKind().hasReceiver();
        return callTarget().arguments().get(0);
    }

    default ResolvedJavaType getReceiverType() {
        ResolvedJavaType receiverType = StampTool.typeOrNull(getReceiver());
        if (receiverType == null) {
            receiverType = ((MethodCallTargetNode) callTarget()).targetMethod().getDeclaringClass();
        }
        return receiverType;
    }

    default InvokeKind getInvokeKind() {
        return callTarget().invokeKind();
    }
}