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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
* 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.
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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
* portions of the Software.
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* 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 com.oracle.truffle.api.dsl.Cached;
import com.oracle.truffle.api.dsl.Specialization;
import com.oracle.truffle.api.interop.ArityException;
import com.oracle.truffle.api.interop.InteropLibrary;
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.nodes.Node;
import com.oracle.truffle.api.profiles.BranchProfile;
import com.oracle.truffle.api.profiles.ConditionProfile;
import com.oracle.truffle.polyglot.PolyglotLanguageContext.ToGuestValuesNode;
abstract class PolyglotExecuteNode extends Node {
private static final Object[] EMPTY = new Object[0];
private final ToGuestValuesNode toGuests = ToGuestValuesNode.create();
public final Object execute(PolyglotLanguageContext languageContext, Object function, Object functionArgsObject,
Class resultClass, Type resultType) {
Object[] argsArray;
if (functionArgsObject instanceof Object[]) {
argsArray = (Object[]) functionArgsObject;
} else {
if (functionArgsObject == null) {
argsArray = EMPTY;
} else {
argsArray = new Object[]{functionArgsObject};
}
}
Object[] functionArgs = toGuests.apply(languageContext, argsArray);
return executeImpl(languageContext, function, functionArgs, resultClass, resultType);
}
protected abstract Object executeImpl(PolyglotLanguageContext languageContext, Object function, Object[] functionArgsObject,
Class resultClass, Type resultType);
@Specialization(limit = "5")
Object doCached(PolyglotLanguageContext languageContext, Object function, Object[] functionArgs,
Class resultClass, Type resultType,
@CachedLibrary("function") InteropLibrary interop,
@Cached ToHostNode toHost,
@Cached ConditionProfile executableCondition,
@Cached ConditionProfile instantiableCondition,
@Cached BranchProfile unsupportedError,
@Cached BranchProfile arityError,
@Cached BranchProfile unsupportedArgumentError) {
Object result;
boolean executable = executableCondition.profile(interop.isExecutable(function));
try {
if (executable) {
result = interop.execute(function, functionArgs);
} else if (instantiableCondition.profile(interop.isInstantiable(function))) {
result = interop.instantiate(function, functionArgs);
} else {
throw HostInteropErrors.executeUnsupported(languageContext, function);
}
} catch (UnsupportedTypeException e) {
unsupportedArgumentError.enter();
if (executable) {
throw HostInteropErrors.invalidExecuteArgumentType(languageContext, function, functionArgs);
} else {
throw HostInteropErrors.invalidInstantiateArgumentType(languageContext, function, functionArgs);
}
} catch (ArityException e) {
arityError.enter();
if (executable) {
throw HostInteropErrors.invalidExecuteArity(languageContext, function, functionArgs, e.getExpectedArity(), e.getActualArity());
} else {
throw HostInteropErrors.invalidInstantiateArity(languageContext, function, functionArgs, e.getExpectedArity(), e.getActualArity());
}
} catch (UnsupportedMessageException e) {
unsupportedError.enter();
throw HostInteropErrors.executeUnsupported(languageContext, function);
}
return toHost.execute(result, resultClass, resultType, languageContext, true);
}
}