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 * (a) the Software, and
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 * (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if
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package com.oracle.graal.python.builtins.objects.itertools;

import static com.oracle.graal.python.nodes.SpecialMethodNames.__REDUCE__;
import static com.oracle.graal.python.nodes.SpecialMethodNames.__ITER__;
import static com.oracle.graal.python.nodes.SpecialMethodNames.__NEXT__;

import com.oracle.graal.python.builtins.Builtin;
import java.util.List;

import com.oracle.graal.python.builtins.CoreFunctions;
import com.oracle.graal.python.builtins.PythonBuiltinClassType;
import com.oracle.graal.python.builtins.PythonBuiltins;
import com.oracle.graal.python.builtins.modules.BuiltinFunctions;
import com.oracle.graal.python.builtins.objects.PNone;
import com.oracle.graal.python.builtins.objects.tuple.PTuple;
import com.oracle.graal.python.lib.PyObjectIsTrueNode;
import com.oracle.graal.python.nodes.function.PythonBuiltinBaseNode;
import com.oracle.graal.python.nodes.function.builtins.PythonUnaryBuiltinNode;
import com.oracle.graal.python.nodes.object.GetClassNode;
import com.oracle.truffle.api.dsl.Cached;
import com.oracle.truffle.api.dsl.GenerateNodeFactory;
import com.oracle.truffle.api.dsl.NodeFactory;
import com.oracle.truffle.api.dsl.Specialization;
import com.oracle.truffle.api.frame.VirtualFrame;
import com.oracle.truffle.api.profiles.LoopConditionProfile;

@CoreFunctions(extendClasses = {PythonBuiltinClassType.PCompress})
public final class CompressBuiltins extends PythonBuiltins {

    @Override
    protected List<? extends NodeFactory<? extends PythonBuiltinBaseNode>> getNodeFactories() {
        return CompressBuiltinsFactory.getFactories();
    }

    @Builtin(name = __ITER__, minNumOfPositionalArgs = 1)
    @GenerateNodeFactory
    public abstract static class IterNode extends PythonUnaryBuiltinNode {
        @Specialization
        static Object iter(PCompress self) {
            return self;
        }
    }

    @Builtin(name = __NEXT__, minNumOfPositionalArgs = 1)
    @GenerateNodeFactory
    public abstract static class NextNode extends PythonUnaryBuiltinNode {
        @Specialization
        static Object next(VirtualFrame frame, PCompress self,
                        @Cached BuiltinFunctions.NextNode nextNode,
                        @Cached PyObjectIsTrueNode isTrue,
                        @Cached LoopConditionProfile loopConditionProfile) {
            Object nextSelector;
            Object nextItem;
            do {
                nextItem = nextNode.execute(frame, self.getData(), PNone.NO_VALUE);
                nextSelector = nextNode.execute(frame, self.getSelectors(), PNone.NO_VALUE);
            } while (loopConditionProfile.profile(!isTrue.execute(frame, nextSelector)));
            return nextItem;
        }
    }

    @Builtin(name = __REDUCE__, minNumOfPositionalArgs = 1)
    @GenerateNodeFactory
    public abstract static class ReduceNode extends PythonUnaryBuiltinNode {
        @Specialization
        Object reduce(PCompress self,
                        @Cached GetClassNode getClassNode) {
            Object type = getClassNode.execute(self);
            PTuple tuple = factory().createTuple(new Object[]{self.getData(), self.getSelectors()});
            return factory().createTuple(new Object[]{type, tuple});
        }
    }

}
