/*
* Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
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package com.oracle.truffle.api.interop;
import com.oracle.truffle.api.CallTarget;
import com.oracle.truffle.api.CompilerDirectives;
import com.oracle.truffle.api.CompilerDirectives.CompilationFinal;
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.nodes.DirectCallNode;
import com.oracle.truffle.api.nodes.IndirectCallNode;
import com.oracle.truffle.api.nodes.Node;
abstract class InteropAccessNode extends Node {
static final int ARG0_RECEIVER = 0;
protected static final int CACHE_SIZE = 8;
protected final Message message;
@CompilationFinal private int previousLength = -2;
protected InteropAccessNode(Message message) {
this.message = message;
}
@SuppressWarnings("unused")
public final Object execute(TruffleObject receiver) throws InteropException {
return checkInteropType(executeImpl(receiver, new Object[]{receiver}));
}
@SuppressWarnings("unused")
public final Object execute(TruffleObject receiver, Object[] arguments) throws InteropException {
return checkInteropType(executeImpl(receiver, insertArg1(arguments, receiver)));
}
@SuppressWarnings("unused")
public final Object execute(TruffleObject receiver, Object arg0) throws InteropException {
return checkInteropType(executeImpl(receiver, new Object[]{receiver, checkInteropType(arg0)}));
}
@SuppressWarnings("unused")
public final Object execute(TruffleObject receiver, Object arg0, Object arg1) throws InteropException {
return checkInteropType(executeImpl(receiver, new Object[]{receiver, checkInteropType(arg0), checkInteropType(arg1)}));
}
@SuppressWarnings("unused")
public final Object execute(TruffleObject receiver, Object arg0, Object[] arguments) throws InteropException {
return checkInteropType(executeImpl(receiver, insertArg2(arguments, receiver, arg0)));
}
@Deprecated
public final Object executeOld(TruffleObject receiver, Object[] arguments) {
return checkInteropType(executeImpl(receiver, insertArg1(arguments, receiver)));
}
private Object[] insertArg1(Object[] arguments, Object arg0) {
int length = profileLength(arguments.length);
Object[] newArguments = new Object[length + 1];
newArguments[0] = checkInteropType(arg0);
arraycopy(arguments, 0, newArguments, 1, length);
return newArguments;
}
private Object[] insertArg2(Object[] arguments, Object arg0, Object arg1) {
int length = profileLength(arguments.length);
Object[] newArguments = new Object[length + 2];
newArguments[0] = checkInteropType(arg0);
newArguments[1] = checkInteropType(arg1);
arraycopy(arguments, 0, newArguments, 2, length);
return newArguments;
}
private static void arraycopy(Object[] src, int srcPos, Object[] dest, int destPos, int length) {
for (int i = 0; i < length; i++) {
dest[destPos + i] = checkInteropType(src[srcPos + i]);
}
}
private static Object checkInteropType(Object obj) {
assert checkInteropTypeImpl(obj);
return obj;
}
private static boolean checkInteropTypeImpl(Object obj) {
if (obj instanceof TruffleObject) {
return true;
}
if (obj == null) {
CompilerDirectives.transferToInterpreter();
return yieldAnError(null);
}
Class<?> clazz = obj.getClass();
if (clazz == Byte.class ||
clazz == Short.class ||
clazz == Integer.class ||
clazz == Long.class ||
clazz == Float.class ||
clazz == Double.class ||
clazz == Character.class ||
clazz == Boolean.class ||
clazz == String.class) {
return true;
} else {
CompilerDirectives.transferToInterpreter();
return yieldAnError(obj.getClass());
}
}
private static boolean yieldAnError(Class<?> clazz) {
CompilerDirectives.transferToInterpreter();
StringBuilder sb = new StringBuilder();
sb.append(clazz == null ? "null" : clazz.getName());
sb.append(" isn't allowed Truffle interop type!\n");
if (clazz == null) {
throw new NullPointerException(sb.toString());
} else {
throw new ClassCastException(sb.toString());
}
}
private int profileLength(int length) {
int returnLength = length;
if (previousLength != -1) {
if (previousLength == length) {
returnLength = previousLength;
} else {
CompilerDirectives.transferToInterpreterAndInvalidate();
if (previousLength == -2) {
previousLength = length;
} else {
previousLength = -1;
}
}
}
return returnLength;
}
protected abstract Object executeImpl(TruffleObject receiver, Object[] arguments);
@SuppressWarnings("unused")
@Specialization(guards = "acceptCached(receiver, foreignAccess, canHandleCall)", limit = "CACHE_SIZE")
protected static Object doCached(TruffleObject receiver, Object[] arguments,
@Cached("receiver.getForeignAccess()") ForeignAccess foreignAccess,
@Cached("createInlinedCallNode(createMessageTarget(foreignAccess))") DirectCallNode sendMessageCall,
@Cached("createInlinedCallNode(createCanHandleTarget(foreignAccess))") DirectCallNode canHandleCall) {
return sendMessageCall.call(arguments);
}
protected static boolean acceptCached(TruffleObject receiver, ForeignAccess foreignAccess, DirectCallNode canHandleCall) {
if (canHandleCall != null) {
return (boolean) canHandleCall.call(new Object[]{receiver});
} else if (foreignAccess != null) {
return foreignAccess.canHandle(receiver);
} else {
return false;
}
}
protected static DirectCallNode createInlinedCallNode(CallTarget target) {
if (target == null) {
return null;
}
DirectCallNode callNode = DirectCallNode.create(target);
callNode.forceInlining();
return callNode;
}
@Specialization
protected Object doGeneric(TruffleObject receiver, Object[] arguments, @Cached("create()") IndirectCallNode indirectCall) {
return indirectCall.call(createGenericMessageTarget(receiver), arguments);
}
@TruffleBoundary
protected CallTarget createCanHandleTarget(ForeignAccess access) {
return access != null ? access.checkLanguage() : null;
}
@TruffleBoundary
protected CallTarget createGenericMessageTarget(TruffleObject receiver) {
return createMessageTarget(receiver.getForeignAccess());
}
protected CallTarget createMessageTarget(ForeignAccess fa) {
CallTarget ct = null;
if (fa != null) {
ct = fa.access(message);
}
if (ct == null) {
throw UnsupportedMessageException.raise(message);
}
return ct;
}
public static InteropAccessNode create(Message message) {
return InteropAccessNodeGen.create(message);
}
}