com.strumenta.antlrkotlin.gradleplugin.internal.AntlrWorkerManager Maven / Gradle / Ivy

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Kotlin multiplatform port of ANTLR

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/*
 * 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 com.strumenta.antlrkotlin.gradleplugin.internal;

import org.gradle.api.file.FileCollection;
import org.gradle.process.internal.JavaExecHandleBuilder;
import org.gradle.process.internal.worker.RequestHandler;
import org.gradle.process.internal.worker.SingleRequestWorkerProcessBuilder;
import org.gradle.process.internal.worker.WorkerProcessFactory;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.File;

public class AntlrWorkerManager {

    private static final Logger LOGGER = LoggerFactory.getLogger(AntlrWorkerManager.class);

    public AntlrResult runWorker(File workingDir, WorkerProcessFactory workerFactory, FileCollection antlrClasspath, AntlrSpec spec) {
        LOGGER.debug("Running worker");
        RequestHandler antlrWorker = createWorkerProcess(workingDir, workerFactory, antlrClasspath, spec);
        return antlrWorker.run(spec);
    }

    private RequestHandler createWorkerProcess(File workingDir, WorkerProcessFactory workerFactory, FileCollection antlrClasspath, AntlrSpec spec) {
        SingleRequestWorkerProcessBuilder builder = workerFactory.singleRequestWorker( AntlrExecuter.class);
        builder.setBaseName("Gradle ANTLR-Kotlin Worker");

        if (antlrClasspath != null) {
            LOGGER.debug("Setting antlr classpath: " + antlrClasspath);
            builder.applicationClasspath(antlrClasspath);
        } else {
            LOGGER.debug("Setting no antlr classpath");
        }
        builder.sharedPackages(new String[]{"antlr", "org.antlr"});
        JavaExecHandleBuilder javaCommand = builder.getJavaCommand();
        javaCommand.setWorkingDir(workingDir);
        javaCommand.setMaxHeapSize(spec.getMaxHeapSize());
        javaCommand.systemProperty("ANTLR_DO_NOT_EXIT", "true");
        javaCommand.redirectErrorStream();
        return builder.build();
    }
}