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Core building blocks and API for the Metal library.

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/*
 * Copyright 2013-2024 Netherlands Forensic Institute
 * Copyright 2021-2024 Infix Technologies B.V.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package io.parsingdata.metal.expression.comparison;

import io.parsingdata.metal.expression.value.Value;
import io.parsingdata.metal.expression.value.ValueExpression;

/**
 * A {@link ComparisonExpression} that implements string equality.
 * 
 * Both values are interpreted as strings. The {@link #compare(Value, Value)}
 * method returns true if both values represent the same string.
 * This is distinct from the byte-level {@link Eq} because byte
 * representations may differ, due to
 * {@link io.parsingdata.metal.encoding.Encoding}s.
 *
 * @see Eq
 * @see EqNum
 */
public class EqStr extends ComparisonExpression {

    public EqStr(final ValueExpression value, final ValueExpression predicate) {
        super(value, predicate);
    }

    @Override
    public boolean compare(final Value left, final Value right) {
        return left.asString().equals(right.asString());
    }

}