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Everything needed to run a comprehensive dev environment. Just type X_ and pick a service from autocomplete; new dev modules will be added as they are built. The only dev service not included in the uber jar is xapi-dev-maven, as it includes all runtime dependencies of maven, adding ~4 seconds to build time, and 6 megabytes to the final output jar size (without xapi-dev-maven, it's ~1MB).

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package xapi.util;

import static xapi.util.X_Namespace.*;

import com.google.gwt.core.client.GWT;

import xapi.platform.JrePlatform;
import xapi.util.X_Namespace;

/**
 * This class is magic; there are four copies of this class.
 *
 * This is the public class exposed to a jre.
 * Each method compiles down to a runtime constant,
 * or as close a possible,
 * to encourage compiler inlining.
 *
 * Then, we super-source a copy for normal gwt builds, which reports false
 * for isRuntimeInjection, and GWT.isScript() for isGwtProd().
 *
 * For gwt users who inherit xapi.X_Inject, we use magic method injection
 * to replace the super-sourced copy of {@link #isRuntimeInjection()} to return
 * true or false, depending on the configuration present in gwt module xml.
 *
 * Finally, our xapi-debug module will override X_Runtime in the classloader,
 * to return true for isDebug().
 *
 * @author "James X. Nelson ([email protected])"
 *
 */
public class X_Runtime {

  /**
   * Are we running in javascript?
   */
  public static boolean isJavascript() {
    return GWT.isScript();
  }
  /**
   * Are we running in java
   */
  public static boolean isJava() {
    return !GWT.isScript();
  }
  /**
   * Flash will provide it's own super-sourced copy.
   */
  public static boolean isActionscript() {
    return false;
  }

  /**
   * Always true in super-source
   */
  public static boolean isGwt() {
    return true;
  }

  /**
   * Will return true if this method is swapped out with magic method injection.
   */
  public static boolean isRuntimeInjection() {
    return false;
  }

  public static boolean isDebug() {
    return "true".equals(System.getProperty(X_Namespace.PROPERTY_DEBUG, "false"));
  }

  public static boolean isMultithreaded() {
    return false;
  }

  public static String getWorkingDirectory() {
    return com.google.gwt.core.client.GWT.getModuleBaseURL();
  }



}