com.oracle.truffle.js.nodes.cast.JSToDoubleNode Maven / Gradle / Ivy

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/*
 * Copyright (c) 2018, 2024, 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.
 *
 * 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
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 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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package com.oracle.truffle.js.nodes.cast;

import com.oracle.truffle.api.HostCompilerDirectives.InliningCutoff;
import com.oracle.truffle.api.dsl.Cached;
import com.oracle.truffle.api.dsl.Cached.Shared;
import com.oracle.truffle.api.dsl.GenerateUncached;
import com.oracle.truffle.api.dsl.NeverDefault;
import com.oracle.truffle.api.dsl.Specialization;
import com.oracle.truffle.api.strings.TruffleString;
import com.oracle.truffle.js.nodes.JavaScriptBaseNode;
import com.oracle.truffle.js.runtime.BigInt;
import com.oracle.truffle.js.runtime.Errors;
import com.oracle.truffle.js.runtime.JSRuntime;
import com.oracle.truffle.js.runtime.Symbol;
import com.oracle.truffle.js.runtime.objects.JSObject;

/**
 * Implements the abstract operation ToNumber but always converting the result to a double value.
 *
 * @see JSToNumberNode
 */
@GenerateUncached
public abstract class JSToDoubleNode extends JavaScriptBaseNode {

    public final double execute(Object value) {
        return executeDouble(value);
    }

    public abstract double executeDouble(Object value);

    @NeverDefault
    public static JSToDoubleNode create() {
        return JSToDoubleNodeGen.create();
    }

    @Specialization
    protected static double doInteger(int value) {
        return value;
    }

    @Specialization
    protected static double doBoolean(boolean value) {
        return JSRuntime.booleanToNumber(value);
    }

    @Specialization
    protected static double doDouble(double value) {
        return value;
    }

    @Specialization
    protected static double doLong(long value) {
        return value;
    }

    @Specialization
    protected final double doBigInt(@SuppressWarnings("unused") BigInt value) {
        throw Errors.createTypeErrorCannotConvertBigIntToNumber(this);
    }

    @Specialization(guards = "isJSNull(value)")
    protected static double doNull(@SuppressWarnings("unused") Object value) {
        return 0;
    }

    @Specialization(guards = "isUndefined(value)")
    protected static double doUndefined(@SuppressWarnings("unused") Object value) {
        return Double.NaN;
    }

    @Specialization
    protected static double doStringDouble(TruffleString value,
                    @Cached JSStringToNumberNode stringToNumberNode) {
        return stringToNumberNode.execute(value);
    }

    @InliningCutoff
    @Specialization
    protected double doJSObject(JSObject value,
                    @Shared @Cached JSToDoubleNode recursiveToDouble,
                    @Shared @Cached(value = "createHintNumber()", uncached = "getUncachedHintNumber()") JSToPrimitiveNode toPrimitiveNode) {
        return recursiveToDouble.executeDouble(toPrimitiveNode.execute(value));
    }

    @Specialization
    protected final double doSymbol(@SuppressWarnings("unused") Symbol value) {
        throw Errors.createTypeErrorCannotConvertToNumber("a Symbol value", this);
    }

    @InliningCutoff
    @Specialization(guards = "isJSObject(object) || isForeignObjectOrNumber(object)", replaces = "doJSObject")
    protected double doForeignObject(Object object,
                    @Shared @Cached JSToDoubleNode recursiveToDouble,
                    @Shared @Cached(value = "createHintNumber()", uncached = "getUncachedHintNumber()") JSToPrimitiveNode toPrimitiveNode) {
        return recursiveToDouble.executeDouble(toPrimitiveNode.execute(object));
    }
}