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Truffle is a multi-language framework for executing dynamic languages
that achieves high performance when combined with Graal.
/*
* 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),
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* without restriction, including without limitation the rights to copy, create
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* Software and the Larger Work(s), and to sublicense the foregoing rights on
* either these or other terms.
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* This license is subject to the following condition:
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* 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
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package com.oracle.truffle.polyglot;
import com.oracle.truffle.api.CallTarget;
import com.oracle.truffle.api.dsl.Cached;
import com.oracle.truffle.api.dsl.Specialization;
import com.oracle.truffle.api.interop.InteropLibrary;
import com.oracle.truffle.api.interop.InvalidArrayIndexException;
import com.oracle.truffle.api.interop.TruffleObject;
import com.oracle.truffle.api.interop.UnsupportedMessageException;
import com.oracle.truffle.api.library.CachedLibrary;
import com.oracle.truffle.api.profiles.BranchProfile;
import java.lang.reflect.Type;
import java.util.Map;
import java.util.Objects;
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")
protected Object doCached(PolyglotLanguageContext languageContext, Object receiver, Object[] args,
@CachedLibrary("receiver") InteropLibrary interop,
@Cached PolyglotToHostNode toHost,
@Cached BranchProfile error) {
if (interop.hasArrayElements(receiver)) {
Object result;
try {
result = interop.readArrayElement(receiver, index);
} catch (UnsupportedMessageException e) {
error.enter();
throw unsupported(languageContext, receiver);
} catch (InvalidArrayIndexException e) {
error.enter();
throw invalidArrayIndex(languageContext, receiver, e.getInvalidIndex());
}
return toHost.execute(languageContext, result, elementClass, elementType);
} else {
error.enter();
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]);
}
}
}
}