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 * 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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 * (a) the Software, and
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 * (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
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 * Software and the Larger Work(s), and to sublicense the foregoing rights on
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package com.oracle.truffle.js.nodes.unary;

import java.util.Set;

import com.oracle.truffle.api.dsl.Cached;
import com.oracle.truffle.api.dsl.Specialization;
import com.oracle.truffle.api.frame.VirtualFrame;
import com.oracle.truffle.api.instrumentation.Tag;
import com.oracle.truffle.api.nodes.NodeInfo;
import com.oracle.truffle.js.nodes.JavaScriptNode;
import com.oracle.truffle.js.nodes.Truncatable;
import com.oracle.truffle.js.nodes.cast.JSToInt32Node;
import com.oracle.truffle.js.nodes.cast.JSToNumericNode;
import com.oracle.truffle.js.nodes.instrumentation.JSTags.UnaryOperationTag;
import com.oracle.truffle.js.runtime.BigInt;
import com.oracle.truffle.js.runtime.SafeInteger;

@NodeInfo(shortName = "~")
public abstract class JSComplementNode extends JSUnaryNode {

    protected JSComplementNode(JavaScriptNode operand) {
        super(operand);
    }

    public static JSComplementNode create(JavaScriptNode operand) {
        Truncatable.truncate(operand);
        return JSComplementNodeGen.create(operand);
    }

    @Override
    public boolean hasTag(Class<? extends Tag> tag) {
        if (tag == UnaryOperationTag.class) {
            return true;
        } else {
            return super.hasTag(tag);
        }
    }

    @Specialization
    protected int doInteger(int a) {
        return ~a;
    }

    @Specialization
    protected int doSafeInteger(SafeInteger a) {
        return ~a.intValue();
    }

    @Specialization
    protected int doDouble(double a,
                    @Cached("create()") JSToInt32Node toInt32Node) {
        return doInteger(toInt32Node.executeInt(a));
    }

    @Specialization
    protected BigInt doBigInt(BigInt a) {
        return a.not();
    }

    @Specialization(replaces = {"doInteger", "doSafeInteger", "doDouble", "doBigInt"})
    protected Object doGeneric(VirtualFrame frame, Object value,
                    @Cached JSToNumericNode toNumericNode,
                    @Cached("createInner()") JSComplementNode recursive) {
        Object number = toNumericNode.execute(value);
        return recursive.execute(frame, number);
    }

    static JSComplementNode createInner() {
        return JSComplementNodeGen.create(null);
    }

    @Override
    public boolean isResultAlwaysOfType(Class<?> clazz) {
        return clazz == Number.class;
    }

    @Override
    protected JavaScriptNode copyUninitialized(Set<Class<? extends Tag>> materializedTags) {
        return JSComplementNodeGen.create(cloneUninitialized(getOperand(), materializedTags));
    }
}