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package com.oracle.truffle.js.builtins.helper;

import com.oracle.truffle.api.dsl.Cached;
import com.oracle.truffle.api.dsl.ImportStatic;
import com.oracle.truffle.api.dsl.Specialization;
import com.oracle.truffle.api.interop.InteropLibrary;
import com.oracle.truffle.api.library.CachedLibrary;
import com.oracle.truffle.api.object.DynamicObject;
import com.oracle.truffle.api.profiles.ConditionProfile;
import com.oracle.truffle.js.nodes.JavaScriptBaseNode;
import com.oracle.truffle.js.runtime.BigInt;
import com.oracle.truffle.js.runtime.JSConfig;
import com.oracle.truffle.js.runtime.Symbol;
import com.oracle.truffle.js.runtime.builtins.JSSet;
import com.oracle.truffle.js.runtime.interop.JSInteropUtil;
import com.oracle.truffle.js.runtime.objects.JSLazyString;

This implements behavior for Collections of ES6. Instead of adhering to the SameValueNull algorithm, we normalize the key (e.g., transform the double value 1.0 to an integer value of 1).
/** * This implements behavior for Collections of ES6. Instead of adhering to the SameValueNull * algorithm, we normalize the key (e.g., transform the double value 1.0 to an integer value of 1). */
@ImportStatic({JSConfig.class}) public abstract class JSCollectionsNormalizeNode extends JavaScriptBaseNode { public abstract Object execute(Object operand); public static JSCollectionsNormalizeNode create() { return JSCollectionsNormalizeNodeGen.create(); } @Specialization public int doInt(int value) { return value; } @Specialization public Object doDouble(double value) { return JSSet.normalizeDouble(value); } @Specialization public String doJSLazyString(JSLazyString value, @Cached("createBinaryProfile()") ConditionProfile flatten) { return value.toString(flatten); } @Specialization public String doString(String value) { return value; } @Specialization public boolean doBoolean(boolean value) { return value; } @Specialization(guards = "isJSDynamicObject(object)") public Object doDynamicObject(DynamicObject object) { return object; } @Specialization public Symbol doSymbol(Symbol value) { return value; } @Specialization public BigInt doBigInt(BigInt bigInt) { return bigInt; } @Specialization(guards = "isForeignObject(object)", limit = "InteropLibraryLimit") public Object doForeignObject(Object object, @CachedLibrary("object") InteropLibrary interop, @Cached("createBinaryProfile()") ConditionProfile primitiveProfile, @Cached("create()") JSCollectionsNormalizeNode nestedNormalizeNode) { Object primitive = JSInteropUtil.toPrimitiveOrDefault(object, null, interop, this); return primitiveProfile.profile(primitive == null) ? object : nestedNormalizeNode.execute(primitive); } }