LengthOpGen.java

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 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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
 *
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 * distributed under the License is distributed on an "AS IS" BASIS,
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package org.apache.sling.scripting.sightly.java.compiler.impl.operator;

import org.apache.sling.scripting.sightly.java.compiler.impl.ExpressionTranslator;
import org.apache.sling.scripting.sightly.java.compiler.impl.GenHelper;
import org.apache.sling.scripting.sightly.java.compiler.impl.JavaSource;
import org.apache.sling.scripting.sightly.java.compiler.impl.SourceGenConstants;
import org.apache.sling.scripting.sightly.java.compiler.impl.Type;

/**
 * Generator for the collection length operator
 */
public final class LengthOpGen implements UnaryOpGen {

    public static final LengthOpGen INSTANCE = new LengthOpGen();

    private LengthOpGen() {
    }

    @Override
    public Type returnType(Type operandType) {
        return Type.LONG;
    }

    @Override
    public void generate(JavaSource source, ExpressionTranslator visitor, TypedNode typedNode) {
        GenHelper.listCoercion(source, visitor, typedNode);
        source.startCall(SourceGenConstants.COLLECTION_LENGTH_METHOD, true).endCall();
    }
}