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 * permitted provided that the following conditions are met:
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 * 1. Redistributions of source code must retain the above copyright notice, this list of
 * conditions and the following disclaimer.
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 * 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.
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 * 3. Neither the name of the copyright holder nor the names of its contributors may be used to
 * endorse or promote products derived from this software without specific prior written
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
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package com.oracle.truffle.llvm.runtime.nodes.func;

import com.oracle.truffle.api.CompilerDirectives;
import com.oracle.truffle.api.dsl.NodeField;
import com.oracle.truffle.api.dsl.Specialization;
import com.oracle.truffle.api.frame.FrameSlot;
import com.oracle.truffle.api.frame.FrameSlotTypeException;
import com.oracle.truffle.api.frame.VirtualFrame;
import com.oracle.truffle.api.instrumentation.GenerateWrapper;
import com.oracle.truffle.api.instrumentation.ProbeNode;
import com.oracle.truffle.llvm.runtime.except.LLVMUserException;
import com.oracle.truffle.llvm.runtime.nodes.api.LLVMControlFlowNode;
import com.oracle.truffle.llvm.runtime.nodes.api.LLVMStatementNode;

@GenerateWrapper
@NodeField(name = "exceptionSlot", type = FrameSlot.class)
public abstract class LLVMResumeNode extends LLVMControlFlowNode {

    public abstract void execute(VirtualFrame frame);

    abstract FrameSlot getExceptionSlot();

    @Override
    public WrapperNode createWrapper(ProbeNode probe) {
        return new LLVMResumeNodeWrapper(this, probe);
    }

    @Override
    public int getSuccessorCount() {
        return 0;
    }

    @Override
    public int[] getSuccessors() {
        return new int[]{};
    }

    @Override
    public LLVMStatementNode getPhiNode(int successorIndex) {
        return null;
    }

    @Specialization
    void doRethrow(VirtualFrame frame) {
        try {
            LLVMUserException thrownException = (LLVMUserException) frame.getObject(getExceptionSlot());
            throw thrownException;
        } catch (FrameSlotTypeException e) {
            CompilerDirectives.transferToInterpreter();
            throw new IllegalStateException(e);
        }
    }
}