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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.nodes.interop;

import static com.oracle.graal.python.util.PythonUtils.TS_ENCODING;

import com.oracle.graal.python.builtins.objects.exception.PBaseException;
import com.oracle.graal.python.nodes.PGuards;
import com.oracle.graal.python.runtime.exception.PException;
import com.oracle.truffle.api.dsl.Cached;
import com.oracle.truffle.api.dsl.Fallback;
import com.oracle.truffle.api.dsl.GenerateUncached;
import com.oracle.truffle.api.dsl.ImportStatic;
import com.oracle.truffle.api.dsl.Specialization;
import com.oracle.truffle.api.nodes.Node;
import com.oracle.truffle.api.strings.TruffleString;

@ImportStatic(PGuards.class)
@GenerateUncached
public abstract class PForeignToPTypeNode extends Node {

    public abstract Object executeConvert(Object value);

    protected static boolean isOtherClass(Class<?> clazz) {
        return !(clazz == Byte.class || clazz == Short.class || clazz == Float.class || clazz == Character.class || clazz == PException.class || clazz == String.class);
    }

    @Specialization(guards = {"value.getClass() == cachedClass", "isOtherClass(cachedClass)"}, limit = "1")
    protected static Object fromObjectCached(Object value,
                    @Cached("value.getClass()") @SuppressWarnings("unused") Class<?> cachedClass) {
        return value;
    }

    @Specialization
    protected static int fromByte(byte value) {
        return value;
    }

    @Specialization
    protected static int fromShort(short value) {
        return value;
    }

    @Specialization
    protected static double fromFloat(float value) {
        return value;
    }

    @Specialization
    protected static TruffleString fromChar(char value,
                    @Cached TruffleString.FromCodePointNode fromCodePointNode) {
        return fromCodePointNode.execute(value, TS_ENCODING, true);
    }

    @Specialization
    protected static TruffleString fromString(String value,
                    @Cached TruffleString.FromJavaStringNode fromJavaStringNode) {
        return fromJavaStringNode.execute(value, TS_ENCODING);
    }

    @Specialization
    protected static TruffleString fromTruffleString(TruffleString value,
                    @Cached TruffleString.SwitchEncodingNode switchEncodingNode) {
        return switchEncodingNode.execute(value, TS_ENCODING);
    }

    @Specialization
    protected static PBaseException fromPException(PException pe) {
        return pe.getUnreifiedException();
    }

    @Fallback
    protected static Object fromObjectGeneric(Object value) {
        return value;
    }

    public static PForeignToPTypeNode create() {
        return PForeignToPTypeNodeGen.create();
    }

    public static PForeignToPTypeNode getUncached() {
        return PForeignToPTypeNodeGen.getUncached();
    }
}
