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[GR-53531] Implementation of Math.sumPrecise proposal.
PullRequest: js/3333
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108
...-js/src/com.oracle.truffle.js/src/com/oracle/truffle/js/builtins/math/SumPreciseNode.java
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| /* | ||
| * Copyright (c) 2024, 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 | ||
| * 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.js.builtins.math; | ||
|
|
||
| import com.oracle.truffle.api.dsl.Cached; | ||
| import com.oracle.truffle.api.dsl.Specialization; | ||
| import com.oracle.truffle.api.exception.AbstractTruffleException; | ||
| import com.oracle.truffle.api.profiles.InlinedBranchProfile; | ||
| import com.oracle.truffle.js.nodes.access.GetIteratorNode; | ||
| import com.oracle.truffle.js.nodes.access.IteratorCloseNode; | ||
| import com.oracle.truffle.js.nodes.access.IteratorStepNode; | ||
| import com.oracle.truffle.js.nodes.access.IteratorValueNode; | ||
| import com.oracle.truffle.js.nodes.access.RequireObjectCoercibleNode; | ||
| import com.oracle.truffle.js.nodes.cast.IsNumberNode; | ||
| import com.oracle.truffle.js.nodes.cast.JSNumberToDoubleNode; | ||
| import com.oracle.truffle.js.nodes.function.JSBuiltin; | ||
| import com.oracle.truffle.js.runtime.Errors; | ||
| import com.oracle.truffle.js.runtime.JSContext; | ||
| import com.oracle.truffle.js.runtime.JSRuntime; | ||
| import com.oracle.truffle.js.runtime.external.XSum.SmallAccumulator; | ||
| import com.oracle.truffle.js.runtime.objects.IteratorRecord; | ||
|
|
||
| public abstract class SumPreciseNode extends MathOperation { | ||
|
|
||
| public SumPreciseNode(JSContext context, JSBuiltin builtin) { | ||
| super(context, builtin); | ||
| } | ||
|
|
||
| @Specialization | ||
| protected double sumPrecise(Object items, | ||
| @Cached RequireObjectCoercibleNode requireObjectCoercible, | ||
| @Cached(inline = true) GetIteratorNode getIteratorNode, | ||
| @Cached IteratorStepNode iteratorStepNode, | ||
| @Cached IteratorValueNode iteratorValueNode, | ||
| @Cached("create(getContext())") IteratorCloseNode iteratorCloseNode, | ||
| @Cached IsNumberNode isNumberNode, | ||
| @Cached JSNumberToDoubleNode toDoubleNode, | ||
| @Cached InlinedBranchProfile errorBranch) { | ||
| requireObjectCoercible.executeVoid(items); | ||
| IteratorRecord iter = getIteratorNode.execute(this, items); | ||
|
|
||
| boolean negativeZero = true; | ||
| SmallAccumulator acc = new SmallAccumulator(); | ||
| try { | ||
| while (true) { | ||
| Object next = iteratorStepNode.execute(iter); | ||
| if (next == Boolean.FALSE) { | ||
| break; | ||
| } | ||
| Object nextValue = iteratorValueNode.execute(next); | ||
| if (isNumberNode.execute(this, nextValue)) { | ||
| double doubleValue = toDoubleNode.execute(this, nextValue); | ||
| if (!JSRuntime.isNegativeZero(doubleValue)) { | ||
| negativeZero = false; | ||
| acc.add(doubleValue); | ||
| } | ||
| } else { | ||
| errorBranch.enter(this); | ||
| throw Errors.createTypeErrorNotANumber(nextValue); | ||
| } | ||
| } | ||
| return negativeZero ? -0d : acc.round(); | ||
| } catch (AbstractTruffleException ex) { | ||
| errorBranch.enter(this); | ||
| iteratorCloseNode.executeAbrupt(iter.getIterator()); | ||
| throw ex; | ||
| } | ||
| } | ||
|
|
||
| } |
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