Ejemplo n.º 1
0
  /**
   * Parse the command line. Inserts residency, update, and swizzle checks into the bytecode of the
   * methods of the specified classes.
   */
  public static void main(final String[] args) {
    final ClassFileLoader loader = new ClassFileLoader();
    List classes = new ArrayList(); // Names of classes from command line
    boolean gotdir = false; // Did user specify an output dir?

    for (int i = 0; i < args.length; i++) {
      if (args[i].equals("-v") || args[i].equals("-verbose")) {
        Main.VERBOSE++;
      } else if (args[i].equals("-help")) {
        Main.usage();
      } else if (args[i].equals("-classpath")) {
        if (++i >= args.length) {
          Main.usage();
        }

        final String classpath = args[i];
        loader.setClassPath(classpath);
      } else if (args[i].equals("-skip")) {
        if (++i >= args.length) {
          Main.usage();
        }

        final String pkg = args[i].replace('.', '/');
        Main.SKIP.add(pkg);
      } else if (args[i].equals("-only")) {
        if (++i >= args.length) {
          Main.usage();
        }

        final String pkg = args[i].replace('.', '/');
        Main.ONLY.add(pkg);
      } else if (args[i].equals("-closure")) {
        Main.CLOSURE = true;
      } else if (args[i].equals("-relax-loading")) {
        ClassHierarchy.RELAX = true;
      } else if (args[i].equals("-f")) {
        Main.FORCE = true;
      } else if (args[i].equals("-norc")) {
        Main.RC = false;
      } else if (args[i].equals("-rc")) {
        Main.RC = true;
      } else if (args[i].equals("-nouc")) {
        Main.UC = false;
      } else if (args[i].equals("-uc")) {
        Main.UC = true;
      } else if (args[i].equals("-nosc")) {
        Main.SC = false;
      } else if (args[i].equals("-sc")) {
        Main.SC = true;
      } else if (args[i].startsWith("-")) {
        Main.usage();
      } else if (i == args.length - 1) {
        // Last argument is the name of the outpu directory
        final File f = new File(args[i]);

        if (f.exists() && !f.isDirectory()) {
          System.err.println("No such directory: " + f.getPath());
          System.exit(2);
        }

        loader.setOutputDir(f);
        gotdir = true;
      } else {
        classes.add(args[i]);
      }
    }

    if (!gotdir) {
      Main.usage();
    }

    if (classes.size() == 0) {
      Main.usage();
    }

    if (Main.VERBOSE > 3) {
      ClassFileLoader.DEBUG = true;
      ClassEditor.DEBUG = true;
    }

    boolean errors = false;

    final Iterator iter = classes.iterator();

    // Load each class specified on the command line
    while (iter.hasNext()) {
      final String name = (String) iter.next();

      try {
        loader.loadClass(name);
      } catch (final ClassNotFoundException ex) {
        System.err.println("Couldn't find class: " + ex.getMessage());
        errors = true;
      }
    }

    if (errors) {
      System.exit(1);
    }

    final BloatContext context = new CachingBloatContext(loader, classes, Main.CLOSURE);

    if (!Main.CLOSURE) {
      final Iterator e = classes.iterator();

      while (e.hasNext()) {
        final String name = (String) e.next();
        try {
          final ClassInfo info = loader.loadClass(name);
          Main.decorateClass(context, info);
        } catch (final ClassNotFoundException ex) {
          System.err.println("Couldn't find class: " + ex.getMessage());
          System.exit(1);
        }
      }
    } else {
      classes = null;

      final ClassHierarchy hier = context.getHierarchy();

      final Iterator e = hier.classes().iterator();

      while (e.hasNext()) {
        final Type t = (Type) e.next();

        if (t.isObject()) {
          try {
            final ClassInfo info = loader.loadClass(t.className());
            Main.decorateClass(context, info);
          } catch (final ClassNotFoundException ex) {
            System.err.println("Couldn't find class: " + ex.getMessage());
            System.exit(1);
          }
        }
      }
    }
  }
Ejemplo n.º 2
0
  /**
   * Adds residency/update/swizzle checks to all of the methods in a given class.
   *
   * @param context Information about all the classes we're dealing with
   * @param info Information about the class we're decorating
   */
  private static void decorateClass(final EditorContext context, final ClassInfo info) {
    final ClassFile classFile = (ClassFile) info;

    // Check to see if the class file is up-to-date
    if (!Main.FORCE) {
      final File source = classFile.file();
      final File target = classFile.outputFile();

      if ((source != null)
          && (target != null)
          && source.exists()
          && target.exists()
          && (source.lastModified() < target.lastModified())) {

        if (Main.VERBOSE > 1) {
          System.out.println(classFile.name() + " is up to date");
        }

        return;
      }
    }

    if (Main.VERBOSE > 2) {
      classFile.print(System.out);
    }

    final ClassEditor c = context.editClass(info);

    boolean skip = false;

    final String name = c.type().className();
    final String qual = c.type().qualifier() + "/*";

    // Edit only classes explicitly mentioned.
    if (Main.ONLY.size() > 0) {
      skip = true;

      // Only edit classes we explicitly don't name.
      for (int i = 0; i < Main.ONLY.size(); i++) {
        final String pkg = (String) Main.ONLY.get(i);

        if (name.equals(pkg) || qual.equals(pkg)) {
          skip = false;
          break;
        }
      }
    }

    // Don't edit classes we explicitly skip.
    if (!skip) {
      for (int i = 0; i < Main.SKIP.size(); i++) {
        final String pkg = (String) Main.SKIP.get(i);

        if (name.equals(pkg) || qual.equals(pkg)) {
          skip = true;
          break;
        }
      }
    }

    if (skip) {
      if (Main.VERBOSE > 0) {
        System.out.println("Skipping " + c.type().className());
      }

      context.release(info);
      return;
    }

    if (Main.VERBOSE > 0) {
      System.out.println("Decorating class " + c.type().className());
    }

    if (Main.VERBOSE > 2) {
      ((ClassFile) info).print(System.out);
    }

    final MethodInfo[] methods = c.methods();

    // Add residency checks (via transform()) to each method in the class
    for (int j = 0; j < methods.length; j++) {
      MethodEditor m;

      try {
        m = context.editMethod(methods[j]);
      } catch (final ClassFormatException ex) {
        System.err.println(ex.getMessage());
        continue;
      }

      Main.transform(m);
      context.commit(methods[j]);
    }

    context.commit(info);
  }