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• PolyglotMapEntry.java

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org.pkl.thirdparty.truffle.polyglot.PolyglotMapEntry Maven / Gradle / Ivy

/*
 * Copyright (c) 2021, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * 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
 *
 * (a) the Software, and
 *
 * (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),
 *
 * without restriction, including without limitation the rights to copy, create
 * derivative works of, display, perform, and distribute the Software and make,
 * use, sell, offer for sale, import, export, have made, and have sold the
 * Software and the Larger Work(s), and to sublicense the foregoing rights on
 * either these or other terms.
 *
 * This license is subject to the following condition:
 *
 * The above copyright notice and either this complete permission notice or at a
 * minimum a reference to the UPL must be included in all copies or substantial
 * portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
package org.pkl.thirdparty.truffle.polyglot;

import java.lang.reflect.Type;
import java.util.Map;
import java.util.Objects;

import org.pkl.thirdparty.truffle.api.CallTarget;
import org.pkl.thirdparty.truffle.api.dsl.Bind;
import org.pkl.thirdparty.truffle.api.dsl.Cached;
import org.pkl.thirdparty.truffle.api.dsl.Specialization;
import org.pkl.thirdparty.truffle.api.interop.InteropLibrary;
import org.pkl.thirdparty.truffle.api.interop.InvalidArrayIndexException;
import org.pkl.thirdparty.truffle.api.interop.TruffleObject;
import org.pkl.thirdparty.truffle.api.interop.UnsupportedMessageException;
import org.pkl.thirdparty.truffle.api.library.CachedLibrary;
import org.pkl.thirdparty.truffle.api.nodes.Node;
import org.pkl.thirdparty.truffle.api.profiles.InlinedBranchProfile;

class PolyglotMapEntry implements Map.Entry, PolyglotWrapper {

    final PolyglotLanguageContext languageContext;
    final Object guestObject;
    final PolyglotMapEntry.Cache cache;

    PolyglotMapEntry(PolyglotLanguageContext languageContext, Object obj, Class keyClass, Type keyType, Class valueClass, Type valueType) {
        this.languageContext = languageContext;
        this.guestObject = obj;
        this.cache = Cache.lookup(languageContext, obj.getClass(), keyClass, keyType, valueClass, valueType);
    }

    static  PolyglotMapEntry create(PolyglotLanguageContext languageContext, Object foreignObject, boolean implementsFunction,
                    Class keyClass, Type keyType, Class valueClass, Type valueType) {
        if (implementsFunction) {
            return new PolyglotMapEntryAndFunction<>(languageContext, foreignObject, keyClass, keyType, valueClass, valueType);
        } else {
            return new PolyglotMapEntry<>(languageContext, foreignObject, keyClass, keyType, valueClass, valueType);
        }
    }

    @Override
    @SuppressWarnings("unchecked")
    public final K getKey() {
        return (K) cache.getKey.call(languageContext, guestObject);
    }

    @Override
    @SuppressWarnings("unchecked")
    public final V getValue() {
        return (V) cache.getValue.call(languageContext, guestObject);
    }

    @Override
    public final V setValue(V value) {
        throw new UnsupportedOperationException();
    }

    @Override
    public final Object getGuestObject() {
        return guestObject;
    }

    @Override
    public final PolyglotContextImpl getContext() {
        return languageContext.context;
    }

    @Override
    public final PolyglotLanguageContext getLanguageContext() {
        return languageContext;
    }

    @Override
    public final boolean equals(Object o) {
        if (o instanceof PolyglotMapEntry) {
            return PolyglotWrapper.equals(languageContext, guestObject, ((PolyglotMapEntry) o).guestObject);
        } else {
            return false;
        }
    }

    @Override
    public final int hashCode() {
        return PolyglotWrapper.hashCode(languageContext, guestObject);
    }

    @Override
    public final String toString() {
        return PolyglotWrapper.toString(this);
    }

    static final class Cache {

        final PolyglotLanguageInstance languageInstance;
        final Class receiverClass;
        final Class keyClass;
        final Type keyType;
        final Class valueClass;
        final Type valueType;

        final CallTarget getKey;
        final CallTarget getValue;
        final CallTarget apply;

        Cache(PolyglotLanguageInstance languageInstance, Class receiverClass, Class keyClass, Type keyType, Class valueClass, Type valueType) {
            this.languageInstance = languageInstance;
            this.receiverClass = receiverClass;
            this.keyClass = keyClass;
            this.keyType = keyType;
            this.valueClass = valueClass;
            this.valueType = valueType;
            this.getKey = PolyglotMapEntryFactory.CacheFactory.GetNodeGen.create(this, "getKey", 0, keyClass, keyType).getCallTarget();
            this.getValue = PolyglotMapEntryFactory.CacheFactory.GetNodeGen.create(this, "getValue", 1, valueClass, valueType).getCallTarget();
            this.apply = new Apply(this).getCallTarget();
        }

        static PolyglotMapEntry.Cache lookup(PolyglotLanguageContext languageContext, Class receiverClass,
                        Class keyClass, Type keyType, Class valueClass, Type valueType) {
            PolyglotMapEntry.Cache.Key cacheKey = new PolyglotMapEntry.Cache.Key(receiverClass, keyClass, keyType, valueClass, valueType);
            PolyglotMapEntry.Cache cache = HostToGuestRootNode.lookupHostCodeCache(languageContext, cacheKey, PolyglotMapEntry.Cache.class);
            if (cache == null) {
                cache = HostToGuestRootNode.installHostCodeCache(languageContext, cacheKey,
                                new PolyglotMapEntry.Cache(languageContext.getLanguageInstance(), receiverClass, keyClass, keyType, valueClass, valueType),
                                PolyglotMapEntry.Cache.class);
            }
            assert cache.receiverClass == receiverClass;
            assert cache.keyClass == keyClass;
            assert cache.keyType == keyType;
            assert cache.valueClass == valueClass;
            assert cache.valueType == valueType;
            return cache;
        }

        private static final class Key {

            final Class receiverClass;
            final Class keyClass;
            final Type keyType;
            final Class valueClass;
            final Type valueType;

            Key(Class receiverClass, Class keyClass, Type keyType,
                            Class valueClass, Type valueType) {
                this.receiverClass = Objects.requireNonNull(receiverClass);
                this.keyClass = Objects.requireNonNull(keyClass);
                this.keyType = keyType;
                this.valueClass = Objects.requireNonNull(valueClass);
                this.valueType = valueType;
            }

            @Override
            public int hashCode() {
                int hashCode = 17;
                hashCode = hashCode * 31 + receiverClass.hashCode();
                hashCode = hashCode * 31 + keyClass.hashCode();
                hashCode = hashCode * 31 + (keyType != null ? keyType.hashCode() : 0);
                hashCode = hashCode * 31 + valueClass.hashCode();
                hashCode = hashCode * 31 + (valueType != null ? valueType.hashCode() : 0);
                return hashCode;
            }

            @Override
            public boolean equals(Object obj) {
                if (this == obj) {
                    return true;
                } else if (obj == null || getClass() != obj.getClass()) {
                    return false;
                }
                PolyglotMapEntry.Cache.Key other = (PolyglotMapEntry.Cache.Key) obj;
                return receiverClass == other.receiverClass &&
                                keyClass == other.keyClass && Objects.equals(keyType, other.keyType) &&
                                valueClass == other.valueClass && Objects.equals(valueType, other.valueType);
            }
        }

        abstract static class PolyglotMapEntryNode extends HostToGuestRootNode {

            static final int LIMIT = 5;

            final PolyglotMapEntry.Cache cache;

            PolyglotMapEntryNode(PolyglotMapEntry.Cache cache) {
                super(cache.languageInstance);
                this.cache = cache;
            }

            protected abstract String getOperationName();

            @SuppressWarnings("unchecked")
            @Override
            protected final Class getReceiverType() {
                return (Class) cache.receiverClass;
            }

            @Override
            public final String getName() {
                return "PolyglotMapEntry<" + cache.receiverClass + ", " + getKeyType() + ", " + getValueType() + ">." + getOperationName();
            }

            protected final RuntimeException unsupported(PolyglotLanguageContext languageContext, Object receiver) {
                throw PolyglotInteropErrors.mapEntryUnsupported(languageContext, receiver, getKeyType(), getValueType(), getOperationName());
            }

            protected final RuntimeException invalidArrayIndex(PolyglotLanguageContext languageContext, Object receiver, long index) {
                throw PolyglotInteropErrors.invalidMapEntryArrayIndex(languageContext, receiver, getKeyType(), getValueType(), index);
            }

            protected final Type getKeyType() {
                return cache.keyType != null ? cache.keyType : cache.keyClass;
            }

            protected final Type getValueType() {
                return cache.valueType != null ? cache.valueType : cache.valueClass;
            }
        }

        abstract static class GetNode extends PolyglotMapEntry.Cache.PolyglotMapEntryNode {

            private final String name;
            private final long index;
            private final Class elementClass;
            private final Type elementType;

            GetNode(PolyglotMapEntry.Cache cache, String name, long index, Class elementClass, Type elementType) {
                super(cache);
                this.name = name;
                this.index = index;
                this.elementClass = elementClass;
                this.elementType = elementType;
            }

            @Override
            protected String getOperationName() {
                return name;
            }

            @Specialization(limit = "LIMIT")
            @SuppressWarnings({"unused", "truffle-static-method"})
            protected Object doCached(PolyglotLanguageContext languageContext, Object receiver, Object[] args,
                            @Bind("this") Node node,
                            @CachedLibrary("receiver") InteropLibrary interop,
                            @Cached PolyglotToHostNode toHost,
                            @Cached InlinedBranchProfile error) {
                if (interop.hasArrayElements(receiver)) {
                    Object result;
                    try {
                        result = interop.readArrayElement(receiver, index);
                    } catch (UnsupportedMessageException e) {
                        error.enter(node);
                        throw unsupported(languageContext, receiver);
                    } catch (InvalidArrayIndexException e) {
                        error.enter(node);
                        throw invalidArrayIndex(languageContext, receiver, e.getInvalidIndex());
                    }
                    return toHost.execute(node, languageContext, result, elementClass, elementType);
                } else {
                    error.enter(node);
                    throw unsupported(languageContext, receiver);
                }
            }
        }

        private static class Apply extends PolyglotMapEntry.Cache.PolyglotMapEntryNode {

            @Child private PolyglotExecuteNode apply = PolyglotExecuteNodeGen.create();

            Apply(PolyglotMapEntry.Cache cache) {
                super(cache);
            }

            @Override
            protected String getOperationName() {
                return "apply";
            }

            @Override
            protected Object executeImpl(PolyglotLanguageContext languageContext, Object receiver, Object[] args) {
                return apply.execute(languageContext, receiver, args[ARGUMENT_OFFSET]);
            }
        }
    }
}