scala_maven.ScalaConsoleMojo Maven / Gradle / Ivy

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The scala-maven-plugin (previously maven-scala-plugin) is used for compiling/testing/running/documenting scala code of any maven project.
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package scala_maven;

import java.io.File;
import java.util.ArrayList;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Set;

import scala_maven_executions.JavaMainCaller;
import scala_maven_executions.JavaMainCallerInProcess;
import scala_maven_executions.MainHelper;

/**
 * Run the Scala console with all the classes of the projects (dependencies and builded)
 *
 * @goal console
 * @requiresDependencyResolution test
 * @inheritByDefault false
 * @requiresDirectInvocation true
 * @executionStrategy once-per-session
 */
public class ScalaConsoleMojo extends ScalaMojoSupport {

    /**
     * The console to run.
     *
     * @parameter property="mainConsole" default-value="scala.tools.nsc.MainGenericRunner"
     * @required
     */
    protected String mainConsole;

    /**
     * Add the test classpath (include classes from test directory), to the console's classpath ?
     *
     * @parameter property="maven.scala.console.useTestClasspath" default-value="true"
     * @required
     */
    protected boolean useTestClasspath;

    /**
     * Add the runtime classpath, to the console's classpath ?
     *
     * @parameter property="maven.scala.console.useRuntimeClasspath" default-value="true"
     * @required
     */
    protected boolean useRuntimeClasspath;

    /**
     * Path of the javaRebel jar. If this option is set then the console run
     * with javarebel enabled.
     *
     * @parameter property="javarebel.jar.path"
     */
    protected File javaRebelPath;

    @Override
    protected void doExecute() throws Exception {
        //TODO - Many other paths uses the getScalaCommand()!!! We should try to use that as much as possibel to help maintainability.
        VersionNumber scalaVersion = findScalaVersion();
        Set classpath = new LinkedHashSet();
        addCompilerToClasspath(classpath);
        addLibraryToClasspath(classpath);
        if (new VersionNumber("2.11.0").compareTo(scalaVersion) <= 0) {
            addToClasspath("jline", "jline", "2.12", classpath);
        } else if (new VersionNumber("2.9.0").compareTo(scalaVersion) <= 0) {
          addToClasspath("org.scala-lang", "jline", scalaVersion.toString(), classpath);
        } else {
          addToClasspath("jline", "jline", "0.9.94", classpath);
        }
        classpath.addAll(project.getCompileClasspathElements());
        if (useTestClasspath) {
            classpath.addAll(project.getTestClasspathElements());
        }
        if (useRuntimeClasspath) {
            classpath.addAll(project.getRuntimeClasspathElements());
        }
        String classpathStr = MainHelper.toMultiPath(classpath.toArray(new String[classpath.size()]));
        JavaMainCaller jcmd = null;
        List list = new ArrayList(args != null ? args.length + 3 : 3);
        if(args != null) {
            for(String arg : args) {
                list.add(arg);
            }
        }
        list.add("-cp");
        list.add(classpathStr);

        if(fork) {
            getLog().warn("scala-maven-plugin cannot fork scala console!!  Running in process");
        }

        jcmd = new JavaMainCallerInProcess(this, mainConsole, classpathStr, jvmArgs, list.toArray(new String[list.size()]));
        //We need to make sure compiler plugins are sent into the interpreter as well!
        addCompilerPluginOptions(jcmd);
        if (javaRebelPath != null) {
            if (!javaRebelPath.exists()) {
                getLog().warn("javaRevelPath '"+javaRebelPath.getCanonicalPath()+"' not found");
            } else {
                jcmd.addJvmArgs("-noverify", "-javaagent:" + javaRebelPath.getCanonicalPath());
            }
        }
        jcmd.run(displayCmd);
    }
}