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Truffle is a multi-language framework for executing dynamic languages
that achieves high performance when combined with Graal.
/*
* Copyright (c) 2018, 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
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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:
*
* 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.
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* 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.Objects;
import java.util.function.Function;
import com.oracle.truffle.api.CallTarget;
import com.oracle.truffle.api.CompilerDirectives;
import com.oracle.truffle.api.CompilerDirectives.TruffleBoundary;
import com.oracle.truffle.api.interop.TruffleObject;
final class PolyglotFunction implements Function, HostWrapper {
final Object guestObject;
final PolyglotLanguageContext languageContext;
final CallTarget apply;
PolyglotFunction(PolyglotLanguageContext languageContext, Object function, Class returnClass, Type returnType) {
this.guestObject = function;
this.languageContext = languageContext;
this.apply = Apply.lookup(languageContext, function.getClass(), returnClass, returnType);
}
@SuppressWarnings("unchecked")
public R apply(T t) {
return (R) apply.call(languageContext, guestObject, t);
}
@Override
public PolyglotLanguageContext getLanguageContext() {
return languageContext;
}
@Override
public Object getGuestObject() {
return guestObject;
}
@Override
public PolyglotContextImpl getContext() {
return languageContext.context;
}
@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 PolyglotFunction) {
return HostWrapper.equals(languageContext, guestObject, ((PolyglotFunction) o).guestObject);
} else {
return false;
}
}
@TruffleBoundary
public static PolyglotFunction create(PolyglotLanguageContext languageContext, Object function, Class returnClass, Type returnType) {
return new PolyglotFunction<>(languageContext, function, returnClass, returnType);
}
static final class Apply extends HostToGuestRootNode {
final Class receiverClass;
final Class returnClass;
final Type returnType;
@Child private PolyglotExecuteNode apply;
Apply(Class receiverType, Class returnClass, Type returnType) {
this.receiverClass = receiverType;
this.returnClass = returnClass;
this.returnType = returnType;
}
@SuppressWarnings("unchecked")
@Override
protected Class getReceiverType() {
return (Class) receiverClass;
}
@Override
public String getName() {
return "PolyglotFunction<" + receiverClass + ", " + returnType + ">.apply";
}
@Override
protected Object executeImpl(PolyglotLanguageContext languageContext, Object function, Object[] args) {
PolyglotExecuteNode localApply = this.apply;
if (localApply == null) {
CompilerDirectives.transferToInterpreterAndInvalidate();
apply = localApply = insert(PolyglotExecuteNodeGen.create());
}
return localApply.execute(languageContext, function, args[ARGUMENT_OFFSET], returnClass, returnType);
}
@Override
public int hashCode() {
int result = 1;
result = 31 * result + Objects.hashCode(receiverClass);
result = 31 * result + Objects.hashCode(returnClass);
result = 31 * result + Objects.hashCode(returnType);
return result;
}
@Override
public boolean equals(Object obj) {
if (!(obj instanceof Apply)) {
return false;
}
Apply other = (Apply) obj;
return receiverClass == other.receiverClass && returnType == other.returnType &&
returnClass == other.returnClass;
}
private static CallTarget lookup(PolyglotLanguageContext languageContext, Class receiverClass, Class returnClass, Type returnType) {
Apply apply = new Apply(receiverClass, returnClass, returnType);
CallTarget target = lookupHostCodeCache(languageContext, apply, CallTarget.class);
if (target == null) {
target = installHostCodeCache(languageContext, apply, createTarget(apply), CallTarget.class);
}
return target;
}
}
}