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Shaded fat Jar for pkl-config-java, a Java config library based on the Pkl config language.
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/*
 * Copyright (c) 2018, 2022, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * The Universal Permissive License (UPL), Version 1.0
 *
 * Subject to the condition set forth below, permission is hereby granted to any
 * person obtaining a copy of this software, associated documentation and/or
 * data (collectively the "Software"), free of charge and under any and all
 * copyright rights in the Software, and any and all patent rights owned or
 * freely licensable by each licensor hereunder covering either (i) the
 * unmodified Software as contributed to or provided by such licensor, or (ii)
 * the Larger Works (as defined below), to deal in both
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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
 * one is included with the Software each a "Larger Work" to which the Software
 * is contributed by such licensors),
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 * Software and the Larger Work(s), and to sublicense the foregoing rights on
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package org.pkl.thirdparty.truffle.polyglot;

import java.lang.reflect.Type;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.function.Function;

import org.pkl.thirdparty.graalvm.polyglot.PolyglotException;
import org.pkl.thirdparty.graalvm.polyglot.Value;
import org.pkl.thirdparty.graalvm.polyglot.impl.AbstractPolyglotImpl;
import org.pkl.thirdparty.graalvm.polyglot.impl.AbstractPolyglotImpl.APIAccess;
import org.pkl.thirdparty.graalvm.polyglot.impl.AbstractPolyglotImpl.AbstractHostAccess;

import org.pkl.thirdparty.truffle.api.CompilerDirectives.TruffleBoundary;

final class PolyglotHostAccess extends AbstractHostAccess {

    final AbstractPolyglotImpl polyglot;

    protected PolyglotHostAccess(AbstractPolyglotImpl polyglot) {
        super(polyglot);
        this.polyglot = polyglot;
    }

    @Override
    public Object toGuestValue(Object polyglotContext, Object hostValue) {
        PolyglotContextImpl internalContext = (PolyglotContextImpl) polyglotContext;
        return toGuestValue(internalContext, hostValue);
    }

    static Object toGuestValue(PolyglotContextImpl context, Object hostValue) {
        if (hostValue instanceof Value) {
            Value receiverValue = (Value) hostValue;
            PolyglotLanguageContext languageContext = (PolyglotLanguageContext) context.getAPIAccess().getContext(receiverValue);
            PolyglotContextImpl valueContext = languageContext != null ? languageContext.context : null;
            Object valueReceiver = context.getAPIAccess().getReceiver(receiverValue);
            if (valueContext != context) {
                valueReceiver = context.migrateValue(valueReceiver, valueContext);
            }
            return valueReceiver;
        } else if (PolyglotWrapper.isInstance(hostValue)) {
            return context.migrateHostWrapper(PolyglotWrapper.asInstance(hostValue));
        }
        return hostValue;
    }

    @Override
    public  List toList(Object internalContext, Object guestValue, boolean implementFunction, Class elementClass, Type elementType) {
        PolyglotContextImpl context = (PolyglotContextImpl) internalContext;
        return PolyglotList. create(context.getHostContext(), guestValue, implementFunction, elementClass, elementType);
    }

    @Override
    public  Map toMap(Object internalContext, Object foreignObject, boolean implementsFunction, Class keyClass, Type keyType, Class valueClass, Type valueType) {
        PolyglotContextImpl context = (PolyglotContextImpl) internalContext;
        return PolyglotMap.create(context.getHostContext(), foreignObject, implementsFunction, keyClass, keyType, valueClass, valueType);
    }

    @Override
    public  Entry toMapEntry(Object internalContext, Object foreignObject, boolean implementsFunction, Class keyClass, Type keyType, Class valueClass, Type valueType) {
        PolyglotContextImpl context = (PolyglotContextImpl) internalContext;
        return PolyglotMapEntry.create(context.getHostContext(), foreignObject, implementsFunction, keyClass, keyType, valueClass, valueType);
    }

    @Override
    public  Function toFunction(Object internalContext, Object function, Class returnClass, Type returnType, Class paramClass, Type paramType) {
        PolyglotContextImpl context = (PolyglotContextImpl) internalContext;
        return PolyglotFunction.create(context.getHostContext(), function, returnClass, returnType, paramClass, paramType);
    }

    @Override
    public Object toObjectProxy(Object internalContext, Class clazz, Object obj) throws IllegalArgumentException {
        PolyglotContextImpl context = (PolyglotContextImpl) internalContext;
        return PolyglotObjectProxyHandler.newProxyInstance(clazz, obj, context.getHostContext());
    }

    @Override
    public  T toFunctionProxy(Object internalContext, Class functionalType, Object function) {
        PolyglotContextImpl context = (PolyglotContextImpl) internalContext;
        return PolyglotFunctionProxyHandler.create(functionalType, function, context.getHostContext());
    }

    @Override
    public  Iterable toIterable(Object internalContext, Object iterable, boolean implementFunction, Class elementClass, Type elementType) {
        PolyglotContextImpl context = (PolyglotContextImpl) internalContext;
        return PolyglotIterable.create(context.getHostContext(), iterable, implementFunction, elementClass, elementType);
    }

    @Override
    public  Iterator toIterator(Object internalContext, Object iterable, boolean implementFunction, Class elementClass, Type elementType) {
        PolyglotContextImpl context = (PolyglotContextImpl) internalContext;
        return PolyglotIterator.create(context.getHostContext(), iterable, implementFunction, elementClass, elementType);
    }

    @Override
    public PolyglotException toPolyglotException(Object internalContext, Throwable e) {
        PolyglotContextImpl context = (PolyglotContextImpl) internalContext;
        return PolyglotImpl.guestToHostException(context.getHostContext(), e, true);
    }

    @Override
    public Value toValue(Object internalContext, Object receiver) {
        PolyglotContextImpl context = (PolyglotContextImpl) internalContext;
        return context.getHostContext().asValue(receiver);
    }

    @Override
    public String getValueInfo(Object internalContext, Object value) {
        PolyglotContextImpl context = (PolyglotContextImpl) internalContext;
        return PolyglotValueDispatch.getValueInfo(context, value);
    }

    @TruffleBoundary
    @Override
    public Value[] toValues(Object internalContext, Object[] values, int startIndex) {
        return (((PolyglotContextImpl) internalContext).getHostContext()).toHostValues(values, startIndex);
    }

    @TruffleBoundary
    @Override
    public Value[] toValues(Object internalContext, Object[] values) {
        return (((PolyglotContextImpl) internalContext).getHostContext()).toHostValues(values);
    }

    @Override
    public boolean isEngineException(RuntimeException e) {
        return e instanceof PolyglotEngineException;
    }

    @Override
    public RuntimeException toEngineException(RuntimeException e) {
        return new PolyglotEngineException(e);
    }

    @Override
    public RuntimeException unboxEngineException(RuntimeException e) {
        return ((PolyglotEngineException) e).e;
    }

    @Override
    public void rethrowPolyglotException(Object internalContext, PolyglotException e) {
        PolyglotContextImpl context = (PolyglotContextImpl) internalContext;
        APIAccess api = polyglot.getAPIAccess();
        PolyglotExceptionImpl exceptionImpl = ((PolyglotExceptionImpl) api.getReceiver(e));
        if (exceptionImpl.context == context || exceptionImpl.context == null || exceptionImpl.isHostException()) {
            // for values of the same context the AbstractTruffleException is allowed to be unboxed
            // for host exceptions no guest values are bound therefore it can also be
            // unboxed
            Throwable original = ((PolyglotExceptionImpl) api.getReceiver(e)).exception;
            if (original instanceof RuntimeException) {
                throw (RuntimeException) original;
            } else if (original instanceof Error) {
                throw (Error) original;
            }
        }
        // fall-through and treat it as any other host exception

    }

}