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Truffle is a multi-language framework for executing dynamic languages
that achieves high performance when combined with Graal.
/*
* Copyright (c) 2015, 2020, 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,
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*/
package com.oracle.truffle.polyglot;
import java.lang.reflect.Type;
import java.util.AbstractList;
import java.util.List;
import com.oracle.truffle.api.CallTarget;
import com.oracle.truffle.api.CompilerDirectives.TruffleBoundary;
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.interop.UnsupportedTypeException;
import com.oracle.truffle.api.library.CachedLibrary;
import com.oracle.truffle.api.profiles.BranchProfile;
import com.oracle.truffle.polyglot.PolyglotLanguageContext.ToGuestValueNode;
import com.oracle.truffle.polyglot.PolyglotListFactory.CacheFactory.GetNodeGen;
import com.oracle.truffle.polyglot.PolyglotListFactory.CacheFactory.RemoveNodeGen;
import com.oracle.truffle.polyglot.PolyglotListFactory.CacheFactory.SetNodeGen;
import com.oracle.truffle.polyglot.PolyglotListFactory.CacheFactory.SizeNodeGen;
class PolyglotList extends AbstractList implements HostWrapper {
final Object guestObject;
final PolyglotLanguageContext languageContext;
final Cache cache;
PolyglotList(Class elementClass, Type elementType, Object array, PolyglotLanguageContext languageContext) {
this.guestObject = array;
this.languageContext = languageContext;
this.cache = Cache.lookup(languageContext, array.getClass(), elementClass, elementType);
}
@Override
public Object getGuestObject() {
return guestObject;
}
@Override
public PolyglotLanguageContext getLanguageContext() {
return languageContext;
}
@Override
public PolyglotContextImpl getContext() {
return languageContext.context;
}
@TruffleBoundary
public static List create(PolyglotLanguageContext languageContext, Object array, boolean implementFunction, Class elementClass, Type elementType) {
if (implementFunction) {
return new PolyglotListAndFunction<>(elementClass, elementType, array, languageContext);
} else {
return new PolyglotList<>(elementClass, elementType, array, languageContext);
}
}
@SuppressWarnings("unchecked")
@Override
public T get(int index) {
return (T) cache.get.call(languageContext, guestObject, index);
}
@Override
public T set(int index, T element) {
T prev = get(index);
cache.set.call(languageContext, guestObject, index, element);
return prev;
}
@SuppressWarnings("unchecked")
@Override
public T remove(int index) {
T prev = get(index);
cache.remove.call(languageContext, guestObject, index);
return prev;
}
@Override
public int size() {
return (Integer) cache.size.call(languageContext, guestObject);
}
@Override
public String toString() {
return HostWrapper.toString(this);
}
@Override
public int hashCode() {
return HostWrapper.hashCode(languageContext, guestObject);
}
@Override
public boolean equals(Object o) {
if (o instanceof PolyglotList) {
return HostWrapper.equals(languageContext, guestObject, ((PolyglotList) o).guestObject);
} else {
return false;
}
}
static final class Cache {
final Class receiverClass;
final Class valueClass;
final Type valueType;
final CallTarget get;
final CallTarget set;
final CallTarget remove;
final CallTarget size;
final CallTarget apply;
Cache(Class receiverClass, Class valueClass, Type valueType) {
this.receiverClass = receiverClass;
this.valueClass = valueClass;
this.valueType = valueType;
this.get = initializeCall(GetNodeGen.create(this));
this.size = initializeCall(SizeNodeGen.create(this));
this.set = initializeCall(SetNodeGen.create(this));
this.remove = initializeCall(RemoveNodeGen.create(this));
this.apply = initializeCall(new Apply(this));
}
private static CallTarget initializeCall(PolyglotListNode node) {
return HostToGuestRootNode.createTarget(node);
}
static Cache lookup(PolyglotLanguageContext languageContext, Class receiverClass, Class valueClass, Type valueType) {
Key cacheKey = new Key(receiverClass, valueClass, valueType);
Cache cache = HostToGuestRootNode.lookupHostCodeCache(languageContext, cacheKey, Cache.class);
if (cache == null) {
cache = HostToGuestRootNode.installHostCodeCache(languageContext, cacheKey, new Cache(receiverClass, valueClass, valueType), Cache.class);
}
assert cache.receiverClass == receiverClass;
assert cache.valueClass == valueClass;
assert cache.valueType == valueType;
return cache;
}
private static final class Key {
final Class receiverClass;
final Class valueClass;
final Type valueType;
Key(Class receiverClass, Class valueClass, Type valueType) {
assert receiverClass != null;
this.receiverClass = receiverClass;
this.valueClass = valueClass;
this.valueType = valueType;
}
@Override
public int hashCode() {
return 31 * (31 * (valueType == null ? 0 : valueType.hashCode()) + receiverClass.hashCode()) + valueClass.hashCode();
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
} else if (obj == null || getClass() != obj.getClass()) {
return false;
}
Key other = (Key) obj;
return valueType == other.valueType && valueClass == other.valueClass && receiverClass == other.receiverClass;
}
}
abstract static class PolyglotListNode extends HostToGuestRootNode {
static final int LIMIT = 5;
final Cache cache;
PolyglotListNode(Cache cache) {
this.cache = cache;
}
@SuppressWarnings("unchecked")
@Override
protected Class getReceiverType() {
return (Class) cache.receiverClass;
}
@Override
public final String getName() {
return "PolyglotList<" + cache.receiverClass + ", " + cache.valueType + ">." + getOperationName();
}
protected abstract String getOperationName();
}
abstract static class SizeNode extends PolyglotListNode {
SizeNode(Cache cache) {
super(cache);
}
@Specialization(limit = "LIMIT")
@SuppressWarnings("unused")
Object doCached(PolyglotLanguageContext languageContext, Object receiver, Object[] args,
@CachedLibrary("receiver") InteropLibrary interop) {
try {
return (int) interop.getArraySize(receiver);
} catch (UnsupportedMessageException e) {
}
return 0;
}
@Override
protected String getOperationName() {
return "size";
}
}
abstract static class GetNode extends PolyglotListNode {
GetNode(Cache cache) {
super(cache);
}
@Specialization(limit = "LIMIT")
@SuppressWarnings("unused")
Object doCached(PolyglotLanguageContext languageContext, Object receiver, Object[] args,
@CachedLibrary("receiver") InteropLibrary interop,
@Cached ToHostNode toHost,
@Cached BranchProfile error) {
Object key = args[ARGUMENT_OFFSET];
Object result = null;
assert key instanceof Integer;
int index = (int) key;
try {
return toHost.execute(interop.readArrayElement(receiver, index), cache.valueClass, cache.valueType, languageContext, true);
} catch (InvalidArrayIndexException e) {
error.enter();
throw HostInteropErrors.invalidListIndex(languageContext, receiver, cache.valueType, index);
} catch (UnsupportedMessageException e) {
error.enter();
throw HostInteropErrors.listUnsupported(languageContext, receiver, cache.valueType, "get()");
}
}
@Override
protected String getOperationName() {
return "get";
}
}
abstract static class SetNode extends PolyglotListNode {
SetNode(Cache cache) {
super(cache);
}
@Override
protected String getOperationName() {
return "set";
}
@Specialization(limit = "LIMIT")
@SuppressWarnings("unused")
Object doCached(PolyglotLanguageContext languageContext, Object receiver, Object[] args,
@CachedLibrary("receiver") InteropLibrary interop,
@Cached ToGuestValueNode toGuest,
@Cached BranchProfile error) {
Object key = args[ARGUMENT_OFFSET];
assert key instanceof Integer;
int index = (int) key;
Object value = toGuest.execute(languageContext, args[ARGUMENT_OFFSET + 1]);
try {
interop.writeArrayElement(receiver, index, value);
} catch (InvalidArrayIndexException e) {
error.enter();
throw HostInteropErrors.invalidListIndex(languageContext, receiver, cache.valueType, index);
} catch (UnsupportedMessageException e) {
error.enter();
throw HostInteropErrors.listUnsupported(languageContext, receiver, cache.valueType, "set");
} catch (UnsupportedTypeException e) {
error.enter();
throw HostInteropErrors.invalidListValue(languageContext, receiver, cache.valueType, (int) key, value);
}
return null;
}
}
abstract static class RemoveNode extends PolyglotListNode {
RemoveNode(Cache cache) {
super(cache);
}
@Override
protected String getOperationName() {
return "remove";
}
@Specialization(limit = "LIMIT")
@SuppressWarnings("unused")
Object doCached(PolyglotLanguageContext languageContext, Object receiver, Object[] args,
@CachedLibrary("receiver") InteropLibrary interop,
@Cached BranchProfile error) {
Object key = args[ARGUMENT_OFFSET];
assert key instanceof Integer;
int index = (int) key;
try {
interop.removeArrayElement(receiver, index);
} catch (InvalidArrayIndexException e) {
error.enter();
throw HostInteropErrors.invalidListIndex(languageContext, receiver, cache.valueType, index);
} catch (UnsupportedMessageException e) {
error.enter();
throw HostInteropErrors.listUnsupported(languageContext, receiver, cache.valueType, "remove");
}
return null;
}
}
private static class Apply extends PolyglotListNode {
@Child private PolyglotExecuteNode apply = PolyglotExecuteNodeGen.create();
Apply(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], Object.class, Object.class);
}
}
}
}