com.oracle.truffle.js.nodes.function.SetFunctionNameNode Maven / Gradle / Ivy

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/*
 * Copyright (c) 2018, 2023, 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
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 * 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),
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 * Software and the Larger Work(s), and to sublicense the foregoing rights on
 * either these or other terms.
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 * This license is subject to the following condition:
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 * 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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package com.oracle.truffle.js.nodes.function;

import com.oracle.truffle.api.CompilerDirectives.TruffleBoundary;
import com.oracle.truffle.api.dsl.Fallback;
import com.oracle.truffle.api.dsl.ImportStatic;
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.JSRuntime;
import com.oracle.truffle.js.runtime.Strings;
import com.oracle.truffle.js.runtime.Symbol;
import com.oracle.truffle.js.runtime.builtins.JSFunction;
import com.oracle.truffle.js.runtime.builtins.JSFunctionObject;
import com.oracle.truffle.js.runtime.objects.PropertyDescriptor;

@ImportStatic(Strings.class)
public abstract class SetFunctionNameNode extends JavaScriptBaseNode {

    protected SetFunctionNameNode() {
    }

    @NeverDefault
    public static SetFunctionNameNode create() {
        return SetFunctionNameNodeGen.create();
    }

    public final void execute(Object callable, Object propertyKey) {
        execute(callable, propertyKey, null);
    }

    public abstract void execute(Object callable, Object propertyKey, TruffleString prefix);

    @Specialization(guards = {"prefix == null || isEmpty(prefix)"})
    protected static void doJSFunctionNoPrefix(JSFunctionObject function, TruffleString propertyKey, @SuppressWarnings("unused") TruffleString prefix) {
        setFunctionName(function, propertyKey);
    }

    @Specialization(guards = {"prefix == null || isEmpty(prefix)"})
    protected static void doJSFunctionNoPrefix(JSFunctionObject function, Symbol propertyKey, TruffleString prefix) {
        doJSFunctionNoPrefix(function, propertyKey.toFunctionNameString(), prefix);
    }

    @Specialization(guards = {"prefix != null", "!isEmpty(prefix)"})
    protected static void doJSFunctionWithPrefix(JSFunctionObject function, TruffleString propertyKey, TruffleString prefix) {
        setFunctionName(function, concatenate(prefix, propertyKey));
    }

    @Specialization(guards = {"prefix != null", "!isEmpty(prefix)"})
    protected static void doJSFunctionWithPrefix(JSFunctionObject function, Symbol propertyKey, TruffleString prefix) {
        doJSFunctionWithPrefix(function, propertyKey.toFunctionNameString(), prefix);
    }

    @SuppressWarnings("unused")
    @Fallback
    protected static void doUnsupported(Object function, Object propertyKey, TruffleString prefix) {
        assert JSRuntime.isPropertyKey(propertyKey) : propertyKey;
        // cannot set function name of foreign objects
    }

    @TruffleBoundary
    private static TruffleString concatenate(TruffleString prefix, TruffleString name) {
        return Strings.concatAll(prefix, Strings.SPACE, name);
    }

    private static void setFunctionName(JSFunctionObject functionValue, TruffleString name) {
        PropertyDescriptor propDesc = PropertyDescriptor.createData(name, false, false, true);
        JSRuntime.definePropertyOrThrow(functionValue, JSFunction.NAME, propDesc);
    }
}