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package com.oracle.truffle.llvm.nodes.intrinsics.interop;
import com.oracle.truffle.api.CompilerDirectives;
import com.oracle.truffle.api.dsl.NodeChild;
import com.oracle.truffle.api.dsl.NodeChildren;
import com.oracle.truffle.api.dsl.Specialization;
import com.oracle.truffle.api.interop.ForeignAccess;
import com.oracle.truffle.api.interop.Message;
import com.oracle.truffle.api.interop.TruffleObject;
import com.oracle.truffle.api.interop.UnsupportedMessageException;
import com.oracle.truffle.api.nodes.Node;
import com.oracle.truffle.llvm.nodes.intrinsics.llvm.LLVMIntrinsic;
import com.oracle.truffle.llvm.runtime.LLVMTruffleObject;
import com.oracle.truffle.llvm.runtime.interop.ToLLVMNode;
import com.oracle.truffle.llvm.runtime.nodes.api.LLVMExpressionNode;
@NodeChildren({@NodeChild(type = LLVMExpressionNode.class)})
public abstract class LLVMTruffleGetSize extends LLVMIntrinsic {
@Child private Node foreignGetSize = Message.GET_SIZE.createNode();
@Child private ToLLVMNode toLLVM = ToLLVMNode.createNode(int.class);
private static void checkLLVMTruffleObject(LLVMTruffleObject value) {
if (value.getOffset() != 0 || value.getName() != null) {
CompilerDirectives.transferToInterpreterAndInvalidate();
throw new IllegalAccessError("Pointee must be unmodified");
}
}
private int getSize(TruffleObject value) {
try {
Object rawValue = ForeignAccess.sendGetSize(foreignGetSize, value);
return (int) toLLVM.executeWithTarget(rawValue);
} catch (UnsupportedMessageException e) {
throw new IllegalStateException(e);
}
}
@Specialization
public int executeIntrinsic(LLVMTruffleObject value) {
checkLLVMTruffleObject(value);
return getSize(value.getObject());
}
@Specialization
public int executeIntrinsic(TruffleObject value) {
return getSize(value);
}
}