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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, 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
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* (a) the Software, and
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* (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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* Software and the Larger Work(s), and to sublicense the foregoing rights on
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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, PolyglotWrapper {
final Object guestObject;
final PolyglotLanguageContext languageContext;
final CallTarget apply;
PolyglotFunction(PolyglotLanguageContext languageContext, Object function, Class returnClass, Type returnType, Class paramClass, Type paramType) {
this.guestObject = function;
this.languageContext = languageContext;
this.apply = Apply.lookup(languageContext, function.getClass(), returnClass, returnType, paramClass, paramType);
}
@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 PolyglotWrapper.toString(this);
}
@Override
public int hashCode() {
return PolyglotWrapper.hashCode(languageContext, guestObject);
}
@Override
public boolean equals(Object o) {
if (o instanceof PolyglotFunction) {
return PolyglotWrapper.equals(languageContext, guestObject, ((PolyglotFunction) o).guestObject);
} else {
return false;
}
}
@TruffleBoundary
public static PolyglotFunction create(PolyglotLanguageContext languageContext, Object function, Class returnClass, Type returnType, Class paramClass, Type paramType) {
return new PolyglotFunction<>(languageContext, function, returnClass, returnType, paramClass, paramType);
}
static final class Apply extends HostToGuestRootNode {
final Class receiverClass;
final Class returnClass;
final Type returnType;
final Class paramClass;
final Type paramType;
@Child private PolyglotExecuteNode apply;
Apply(Class receiverType, Class returnClass, Type returnType, Class paramClass, Type paramType) {
this.receiverClass = Objects.requireNonNull(receiverType);
this.returnClass = Objects.requireNonNull(returnClass);
this.returnType = returnType;
this.paramClass = Objects.requireNonNull(paramClass);
this.paramType = paramType;
}
@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, paramClass, paramType);
}
@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);
result = 31 * result + Objects.hashCode(paramClass);
result = 31 * result + Objects.hashCode(paramType);
return result;
}
@Override
public boolean equals(Object obj) {
if (!(obj instanceof Apply)) {
return false;
}
Apply other = (Apply) obj;
return receiverClass == other.receiverClass &&
returnClass == other.returnClass && Objects.equals(returnType, other.returnType) &&
paramClass == other.paramClass && Objects.equals(paramType, other.paramType);
}
private static CallTarget lookup(PolyglotLanguageContext languageContext, Class receiverClass, Class returnClass, Type returnType, Class paramClass, Type paramType) {
Apply apply = new Apply(receiverClass, returnClass, returnType, paramClass, paramType);
CallTarget target = lookupHostCodeCache(languageContext, apply, CallTarget.class);
if (target == null) {
target = installHostCodeCache(languageContext, apply, createTarget(apply), CallTarget.class);
}
return target;
}
}
}