com.oracle.truffle.sl.nodes.expression.SLUnboxNode Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of truffle-sl Show documentation
Truffle SL is an example language implemented using the Truffle API.
There is a newer version: 1.0.0-rc7
/*
 * Copyright (c) 2012, 2014, 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,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
package com.oracle.truffle.sl.nodes.expression;

import com.oracle.truffle.api.CompilerDirectives;
import com.oracle.truffle.api.dsl.Cached;
import com.oracle.truffle.api.dsl.Fallback;
import com.oracle.truffle.api.dsl.NodeChild;
import com.oracle.truffle.api.dsl.Specialization;
import com.oracle.truffle.api.interop.ForeignAccess;
import com.oracle.truffle.api.interop.Message;
import com.oracle.truffle.api.interop.TruffleObject;
import com.oracle.truffle.api.nodes.Node;
import com.oracle.truffle.sl.SLException;
import com.oracle.truffle.sl.nodes.SLExpressionNode;
import com.oracle.truffle.sl.nodes.interop.SLForeignToSLTypeNode;
import com.oracle.truffle.sl.runtime.SLFunction;
import com.oracle.truffle.sl.runtime.SLNull;
import java.math.BigInteger;

@NodeChild("child")
public abstract class SLUnboxNode extends SLExpressionNode {

    @Specialization
    protected long unboxLong(long value) {
        return value;
    }

    @Specialization
    protected BigInteger unboxBigInteger(BigInteger value) {
        return value;
    }

    @Specialization
    protected boolean unboxBoolean(boolean value) {
        return value;
    }

    @Specialization
    protected String unboxString(String value) {
        return value;
    }

    @Specialization
    protected SLFunction unboxFunction(SLFunction value) {
        return value;
    }

    @Specialization
    protected SLNull unboxNull(SLNull value) {
        return value;
    }

    @Specialization(guards = "isBoxedPrimitive(value)")
    protected Object unboxBoxed(
                    Object value,
                    @Cached("create()") SLForeignToSLTypeNode foreignToSL) {
        return foreignToSL.unbox((TruffleObject) value);
    }

    @Specialization(guards = "!isBoxedPrimitive(value)")
    protected Object unboxGeneric(Object value) {
        return value;
    }

    @Child private Node isBoxed;

    protected boolean isBoxedPrimitive(Object value) {
        if (value instanceof TruffleObject) {
            if (isBoxed == null) {
                CompilerDirectives.transferToInterpreterAndInvalidate();
                isBoxed = insert(Message.IS_BOXED.createNode());
            }
            if (ForeignAccess.sendIsBoxed(isBoxed, (TruffleObject) value)) {
                return true;
            }
        }
        return false;
    }

    @Fallback
    protected Object typeError(Object value) {
        throw SLException.typeError(this, value);
    }

}