Package net.openhft.jpsg.collect.bulk

Source Code of net.openhft.jpsg.collect.bulk.ToPrimitiveArray

/*
* Copyright 2014 the original author or authors.
*
* 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 net.openhft.jpsg.collect.bulk;

import net.openhft.jpsg.PrimitiveType;


public final class ToPrimitiveArray extends BulkMethod {

    @Override
    public void beginning() {
        PrimitiveType elemType = (PrimitiveType) cxt.viewOption();
        gen.lines(
                "int size = size();",
                "if (a.length < size)",
                "    a = new " + elemType.standalone + "[size];",
                "if (size == 0) {",
                "    if (a.length > 0)",
                "        a[0] = " + elemType.formatValue("0") + ";",
                "    return a;",
                "}",
                "int resultIndex = 0;"
        );
    }

    @Override
    public void loopBody() {
        gen.lines("a[resultIndex++] = " + gen.viewElem() + ";");
    }

    @Override
    public void end() {
        PrimitiveType elemType = (PrimitiveType) cxt.viewOption();
        gen.lines(
                "if (a.length > resultIndex)",
                "    a[resultIndex] = " + elemType.formatValue("0") + ";"
        );
        gen.ret("a");
    }
}
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