com.oracle.truffle.js.nodes.unary.IsIdenticalStringNode Maven / Gradle / Ivy

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 * person obtaining a copy of this software, associated documentation and/or
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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.instrumentation.Tag;
import com.oracle.truffle.api.strings.TruffleString;
import com.oracle.truffle.js.nodes.JavaScriptNode;
import com.oracle.truffle.js.runtime.Strings;

public abstract class IsIdenticalStringNode extends IsIdenticalBaseNode {

    protected final TruffleString string;

    protected IsIdenticalStringNode(TruffleString string, JavaScriptNode operand, boolean leftConstant) {
        super(operand, leftConstant);
        this.string = string;
    }

    @Specialization
    protected boolean doString(TruffleString other,
                    @Cached TruffleString.EqualNode equalsNode) {
        return Strings.equals(equalsNode, string, other);
    }

    @Specialization(guards = "!isTruffleString(other)")
    protected boolean doOther(@SuppressWarnings("unused") Object other) {
        return false;
    }

    public static IsIdenticalStringNode create(TruffleString string, JavaScriptNode operand, boolean leftConstant) {
        return IsIdenticalStringNodeGen.create(string, operand, leftConstant);
    }

    @Override
    protected JavaScriptNode copyUninitialized(Set> materializedTags) {
        return create(string, cloneUninitialized(getOperand(), materializedTags), leftConstant);
    }

    @Override
    protected Object getConstantValue() {
        return string;
    }
}