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 * (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if
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package com.oracle.truffle.js.runtime.builtins;

import com.oracle.truffle.api.TruffleLanguage.LanguageReference;
import com.oracle.truffle.api.dsl.Cached;
import com.oracle.truffle.api.dsl.CachedLanguage;
import com.oracle.truffle.api.interop.InteropLibrary;
import com.oracle.truffle.api.interop.InvalidArrayIndexException;
import com.oracle.truffle.api.interop.UnsupportedMessageException;
import com.oracle.truffle.api.library.CachedLibrary;
import com.oracle.truffle.api.library.ExportLibrary;
import com.oracle.truffle.api.library.ExportMessage;
import com.oracle.truffle.api.object.DynamicObject;
import com.oracle.truffle.api.object.Shape;
import com.oracle.truffle.js.lang.JavaScriptLanguage;
import com.oracle.truffle.js.nodes.access.ReadElementNode;
import com.oracle.truffle.js.nodes.access.WriteElementNode;
import com.oracle.truffle.js.nodes.interop.ExportValueNode;
import com.oracle.truffle.js.nodes.interop.ImportValueNode;
import com.oracle.truffle.js.runtime.Errors;
import com.oracle.truffle.js.runtime.array.TypedArray;
import com.oracle.truffle.js.runtime.interop.InteropArray;
import com.oracle.truffle.js.runtime.objects.JSObject;
import com.oracle.truffle.js.runtime.objects.Undefined;

@ExportLibrary(InteropLibrary.class)
public final class JSTypedArrayObject extends JSArrayBufferViewBase {

    TypedArray arrayType;

    protected JSTypedArrayObject(Shape shape, TypedArray arrayType, JSArrayBufferObject arrayBuffer, int length, int offset) {
        super(shape, arrayBuffer, length, offset);
        this.arrayType = arrayType;
    }

    @SuppressWarnings("static-method")
    public TypedArrayAccess typedArrayAccess() {
        return TypedArrayAccess.SINGLETON;
    }

    public TypedArray getArrayType() {
        return arrayType;
    }

    public static JSTypedArrayObject create(Shape shape, TypedArray arrayType, JSArrayBufferObject arrayBuffer, int length, int offset) {
        return new JSTypedArrayObject(shape, arrayType, arrayBuffer, length, offset);
    }

    @Override
    public String getClassName() {
        return typedArrayAccess().getTypedArrayName(this);
    }

    @Override
    public String getBuiltinToStringTag() {
        return "Object";
    }

    @ExportMessage
    public Object getMembers(@SuppressWarnings("unused") boolean includeInternal) {
        // Do not include array indices
        assert JSObject.getJSClass(this) == JSArrayBufferView.INSTANCE;
        return InteropArray.create(filterEnumerableNames(this, JSNonProxy.ordinaryOwnPropertyKeys(this), JSArrayBufferView.INSTANCE));
    }

    @SuppressWarnings("static-method")
    @ExportMessage
    public boolean hasArrayElements() {
        return true;
    }

    @ExportMessage
    public long getArraySize() {
        return JSArrayBufferView.typedArrayGetLength(this);
    }

    @ExportMessage
    public Object readArrayElement(long index,
                    @CachedLanguage @SuppressWarnings("unused") LanguageReference<JavaScriptLanguage> languageRef,
                    @Cached(value = "create(languageRef.get().getJSContext())", uncached = "getUncachedRead()") ReadElementNode readNode,
                    @Cached ExportValueNode exportNode,
                    @CachedLibrary("this") InteropLibrary thisLibrary) throws InvalidArrayIndexException, UnsupportedMessageException {
        DynamicObject target = this;
        if (index < 0 || index >= thisLibrary.getArraySize(this)) {
            throw InvalidArrayIndexException.create(index);
        }
        Object result;
        if (readNode == null) {
            result = JSObject.getOrDefault(target, index, target, Undefined.instance);
        } else {
            result = readNode.executeWithTargetAndIndexOrDefault(target, index, Undefined.instance);
        }
        return exportNode.execute(result);
    }

    @ExportMessage(name = "isArrayElementReadable")
    @ExportMessage(name = "isArrayElementModifiable")
    public boolean isArrayElementReadable(long index,
                    @CachedLibrary("this") InteropLibrary thisLibrary) {
        try {
            return (index >= 0 && index < thisLibrary.getArraySize(this));
        } catch (UnsupportedMessageException e) {
            throw Errors.shouldNotReachHere(e);
        }
    }

    @ExportMessage
    public void writeArrayElement(long index, Object value,
                    @Cached ImportValueNode castValueNode,
                    @CachedLanguage @SuppressWarnings("unused") LanguageReference<JavaScriptLanguage> languageRef,
                    @Cached(value = "createCachedInterop(languageRef)", uncached = "getUncachedWrite()") WriteElementNode writeNode,
                    @CachedLibrary("this") InteropLibrary thisLibrary) throws InvalidArrayIndexException, UnsupportedMessageException {
        DynamicObject target = this;
        if (index < 0 || index >= thisLibrary.getArraySize(this)) {
            throw InvalidArrayIndexException.create(index);
        }
        Object importedValue = castValueNode.executeWithTarget(value);
        if (writeNode == null) {
            JSObject.set(target, index, importedValue, true, null);
        } else {
            writeNode.executeWithTargetAndIndexAndValue(target, index, importedValue);
        }
    }

    @SuppressWarnings("static-method")
    @ExportMessage
    public boolean isArrayElementInsertable(@SuppressWarnings("unused") long index) {
        // typed array elements are never insertable
        return false;
    }
}