rmic.java

gcc的组建

		else if (returntype == Byte.TYPE)
		  out.print("in.readByte();");
		else if (returntype == Character.TYPE)
		  out.print("in.readChar();");
		else if (returntype == Short.TYPE)
		  out.print("in.readShort();");
		else if (returntype == Integer.TYPE)
		  out.print("in.readInt();");
		else if (returntype == Long.TYPE)
		  out.print("in.readLong();");
		else if (returntype == Float.TYPE)
		  out.print("in.readFloat();");
		else if (returntype == Double.TYPE)
		  out.print("in.readDouble();");
		else
		  {
		    if (returntype != Object.class)
		      out.print("(" + getPrettyName(returntype) + ")");
		    else
		      needcastcheck = true;
		    out.print("in.readObject();");
		  }
		out.println();
		out.print("return ($result);");
	      }
	    ctrl.unindent();
	    out.println("}");
	    out.print("catch (java.io.IOException e) {");
	    ctrl.indent();
	    out.print("throw new java.rmi.UnmarshalException(\"error unmarshalling return\", e);");
	    ctrl.unindent();
	    out.println("}");
	    if (needcastcheck)
	      {
		out.print("catch (java.lang.ClassNotFoundException e) {");
		ctrl.indent();
		out.print("throw new java.rmi.UnmarshalException(\"error unmarshalling return\", e);");
		ctrl.unindent();
		out.println("}");
	      }
	    out.print("finally {");
	    ctrl.indent();
	    out.print("ref.done(call);");
	    ctrl.unindent();
	    out.print("}");

	    if (need12Stubs && need11Stubs)
	      {
		ctrl.unindent();
		out.print("}");
	      }
	  }

	ctrl.unindent();
	out.print("}");

	boolean needgeneral = true;
	for (int j = 0; j < except.length; j++)
	  {
	    out.println();
	    out.print("catch (" + getPrettyName(except[j]) + " e) {");
	    ctrl.indent();
	    out.print("throw e;");
	    ctrl.unindent();
	    out.print("}");
	    if (except[j] == Exception.class)
	      needgeneral = false;
	  }
	if (needgeneral)
	  {
	    out.println();
	    out.print("catch (java.lang.Exception e) {");
	    ctrl.indent();
	    out.print("throw new java.rmi.UnexpectedException(\"undeclared checked exception\", e);");
	    ctrl.unindent();
	    out.print("}");
	  }

	ctrl.unindent();
	out.print("}");
	out.println();
      }

    ctrl.unindent();
    out.println("}");

    out.close();
  }

  private void generateSkel() throws IOException
  {
    skelname = fullclassname + "_Skel";
    String skelclassname = classname + "_Skel";
    ctrl =
      new TabbedWriter(new FileWriter((destination == null ? ""
                                                           : destination
                                                           + File.separator)
                                      + skelname.replace('.',
                                                         File.separatorChar)
                                      + ".java"));
    out = new PrintWriter(ctrl);

    if (verbose)
      System.out.println("[Generating class " + skelname + ".java]");

    out.println("// Skel class generated by rmic - DO NOT EDIT!");
    out.println();
    if (fullclassname != classname)
      {
	String pname =
	  fullclassname.substring(0, fullclassname.lastIndexOf('.'));
	out.println("package " + pname + ";");
	out.println();
      }

    out.print("public final class " + skelclassname);
    ctrl.indent();

    // Output interfaces we implement
    out.print("implements java.rmi.server.Skeleton");

    ctrl.unindent();
    out.print("{");
    ctrl.indent();

    // Interface hash - don't know how to calculate this - XXX
    out.println("private static final long interfaceHash = "
                + RMIHashes.getInterfaceHash(clazz) + "L;");
    out.println();

    // Operation table
    out.print("private static final java.rmi.server.Operation[] operations = {");

    ctrl.indent();
    for (int i = 0; i < remotemethods.length; i++)
      {
	Method m = remotemethods[i].meth;
	out.print("new java.rmi.server.Operation(\"");
	out.print(getPrettyName(m.getReturnType()) + " ");
	out.print(m.getName() + "(");
	// Output signature
	Class[] sig = m.getParameterTypes();
	for (int j = 0; j < sig.length; j++)
	  {
	    out.print(getPrettyName(sig[j]));
	    if (j + 1 < sig.length)
	      out.print(", ");
	  }
	out.print("\")");
	if (i + 1 < remotemethods.length)
	  out.println(",");
      }
    ctrl.unindent();
    out.println("};");

    out.println();

    // getOperations method
    out.print("public java.rmi.server.Operation[] getOperations() {");
    ctrl.indent();
    out.print("return ((java.rmi.server.Operation[]) operations.clone());");
    ctrl.unindent();
    out.println("}");

    out.println();

    // Dispatch method
    out.print("public void dispatch(java.rmi.Remote obj, java.rmi.server.RemoteCall call, int opnum, long hash) throws java.lang.Exception {");
    ctrl.indent();

    out.print("if (opnum < 0) {");
    ctrl.indent();

    for (int i = 0; i < remotemethods.length; i++)
      {
	out.print("if (hash == " + Long.toString(remotemethods[i].hash)
	          + "L) {");
	ctrl.indent();
	out.print("opnum = " + i + ";");
	ctrl.unindent();
	out.println("}");
	out.print("else ");
      }
    out.print("{");
    ctrl.indent();
    out.print("throw new java.rmi.server.SkeletonMismatchException(\"interface hash mismatch\");");
    ctrl.unindent();
    out.print("}");

    ctrl.unindent();
    out.println("}");
    out.print("else if (hash != interfaceHash) {");
    ctrl.indent();
    out.print("throw new java.rmi.server.SkeletonMismatchException(\"interface hash mismatch\");");
    ctrl.unindent();
    out.println("}");

    out.println();

    out.println(fullclassname + " server = (" + fullclassname + ")obj;");
    out.println("switch (opnum) {");

    // Method dispatch
    for (int i = 0; i < remotemethods.length; i++)
      {
	Method m = remotemethods[i].meth;
	out.println("case " + i + ":");
	out.print("{");
	ctrl.indent();

	Class[] sig = m.getParameterTypes();
	for (int j = 0; j < sig.length; j++)
	  {
	    out.print(getPrettyName(sig[j]));
	    out.println(" $param_" + j + ";");
	  }

	out.print("try {");
	boolean needcastcheck = false;
	ctrl.indent();
	out.println("java.io.ObjectInput in = call.getInputStream();");
	for (int j = 0; j < sig.length; j++)
	  {
	    out.print("$param_" + j + " = ");
	    if (sig[j] == Boolean.TYPE)
	      out.print("in.readBoolean();");
	    else if (sig[j] == Byte.TYPE)
	      out.print("in.readByte();");
	    else if (sig[j] == Character.TYPE)
	      out.print("in.readChar();");
	    else if (sig[j] == Short.TYPE)
	      out.print("in.readShort();");
	    else if (sig[j] == Integer.TYPE)
	      out.print("in.readInt();");
	    else if (sig[j] == Long.TYPE)
	      out.print("in.readLong();");
	    else if (sig[j] == Float.TYPE)
	      out.print("in.readFloat();");
	    else if (sig[j] == Double.TYPE)
	      out.print("in.readDouble();");
	    else
	      {
		if (sig[j] != Object.class)
		  {
		    out.print("(" + getPrettyName(sig[j]) + ")");
		    needcastcheck = true;
		  }
		out.print("in.readObject();");
	      }
	    out.println();
	  }
	ctrl.unindent();
	out.println("}");
	out.print("catch (java.io.IOException e) {");
	ctrl.indent();
	out.print("throw new java.rmi.UnmarshalException(\"error unmarshalling arguments\", e);");
	ctrl.unindent();
	out.println("}");
	if (needcastcheck)
	  {
	    out.print("catch (java.lang.ClassCastException e) {");
	    ctrl.indent();
	    out.print("throw new java.rmi.UnmarshalException(\"error unmarshalling arguments\", e);");
	    ctrl.unindent();
	    out.println("}");
	  }
	out.print("finally {");
	ctrl.indent();
	out.print("call.releaseInputStream();");
	ctrl.unindent();
	out.println("}");

	Class returntype = m.getReturnType();
	if (returntype != Void.TYPE)
	  out.print(getPrettyName(returntype) + " $result = ");
	out.print("server." + m.getName() + "(");
	for (int j = 0; j < sig.length; j++)
	  {
	    out.print("$param_" + j);
	    if (j + 1 < sig.length)
	      out.print(", ");
	  }
	out.println(");");

	out.print("try {");
	ctrl.indent();
	out.print("java.io.ObjectOutput out = call.getResultStream(true);");
	if (returntype != Void.TYPE)
	  {
	    out.println();
	    if (returntype == Boolean.TYPE)
	      out.print("out.writeBoolean($result);");
	    else if (returntype == Byte.TYPE)
	      out.print("out.writeByte($result);");
	    else if (returntype == Character.TYPE)
	      out.print("out.writeChar($result);");
	    else if (returntype == Short.TYPE)
	      out.print("out.writeShort($result);");
	    else if (returntype == Integer.TYPE)
	      out.print("out.writeInt($result);");
	    else if (returntype == Long.TYPE)
	      out.print("out.writeLong($result);");
	    else if (returntype == Float.TYPE)
	      out.print("out.writeFloat($result);");
	    else if (returntype == Double.TYPE)
	      out.print("out.writeDouble($result);");
	    else
	      out.print("out.writeObject($result);");
	  }
	ctrl.unindent();
	out.println("}");
	out.print("catch (java.io.IOException e) {");
	ctrl.indent();
	out.print("throw new java.rmi.MarshalException(\"error marshalling return\", e);");
	ctrl.unindent();
	out.println("}");
	out.print("break;");

	ctrl.unindent();
	out.println("}");
	out.println();
      }

    out.print("default:");
    ctrl.indent();
    out.print("throw new java.rmi.UnmarshalException(\"invalid method number\");");
    ctrl.unindent();
    out.print("}");

    ctrl.unindent();
    out.print("}");

    ctrl.unindent();
    out.println("}");

    out.close();
  }

  private void compile(String name) throws Exception
  {
    Compiler comp = Compiler.getInstance();
    if (verbose)
      System.out.println("[Compiling class " + name + "]");
    comp.setDestination(destination);
    comp.compile(name);
  }

  private static String getPrettyName(Class cls)
  {
    StringBuffer str = new StringBuffer();
    for (int count = 0;; count++)
      {
	if (! cls.isArray())
	  {
	    str.append(cls.getName());
	    for (; count > 0; count--)
	      str.append("[]");
	    return (str.toString());
	  }
	cls = cls.getComponentType();
      }
  }

/**
 * Sort exceptions so the most general go last.
 */
  private Class[] sortExceptions(Class[] except)
  {
    for (int i = 0; i < except.length; i++)
      {
	for (int j = i + 1; j < except.length; j++)
	  {
	    if (except[i].isAssignableFrom(except[j]))
	      {
		Class tmp = except[i];
		except[i] = except[j];
		except[j] = tmp;
	      }
	  }
      }
    return (except);
  }

/**
 * Process the options until we find the first argument.
 */
  private void parseOptions()
  {
    for (;;)
      {
	if (next >= args.length || args[next].charAt(0) != '-')
	  break;
	String arg = args[next];
	next++;

	// Accept `--' options if they look long enough.
	if (arg.length() > 3 && arg.charAt(0) == '-' && arg.charAt(1) == '-')
	  arg = arg.substring(1);

	if (arg.equals("-keep"))
	  keep = true;
	else if (arg.equals("-keepgenerated"))
	  keep = true;
	else if (arg.equals("-v1.1"))
	  {
	    need11Stubs = true;
	    need12Stubs = false;
	  }
	else if (arg.equals("-vcompat"))
	  {
	    need11Stubs = true;
	    need12Stubs = true;
	  }
	else if (arg.equals("-v1.2"))
	  {
	    need11Stubs = false;
	    need12Stubs = true;
	  }
	else if (arg.equals("-g"))
	  {
	  }
	else if (arg.equals("-depend"))
	  {
	  }
	else if (arg.equals("-nowarn"))
	  {
	  }
	else if (arg.equals("-verbose"))
	  verbose = true;
	else if (arg.equals("-nocompile"))
	  compile = false;
	else if (arg.equals("-classpath"))
	  next++;
	else if (arg.equals("-help"))
	  usage();
	else if (arg.equals("-version"))
	  {
	    System.out.println("rmic (" + System.getProperty("java.vm.name")
	                       + ") " + System.getProperty("java.vm.version"));
	    System.out.println();
	    System.out.println("Copyright 2006 Free Software Foundation, Inc.");
	    System.out.println("This is free software; see the source for copying conditions.  There is NO");
	    System.out.println("warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.");
	    System.exit(0);
	  }
	else if (arg.equals("-d"))
	  {
	    destination = args[next];
	    next++;
	  }
	else if (arg.charAt(1) == 'J')
	  {
	  }
	else
	  error("unrecognized option `" + arg + "'");
      }
  }

/**
 * Looks for the java.rmi.Remote interface that that is implemented by theClazz.
 * @param theClazz the class to look in
 * @return the Remote interface of theClazz or null if theClazz does not implement a Remote interface
 */
  private Class getRemoteInterface(Class theClazz)
  {
    Class[] interfaces = theClazz.getInterfaces();
    for (int i = 0; i < interfaces.length; i++)
      {
	if (java.rmi.Remote.class.isAssignableFrom(interfaces[i]))
	  return interfaces[i];
      }
    logError("Class " + theClazz.getName()
             + " is not a remote object. It does not implement an interface that is a java.rmi.Remote-interface.");
    return null;
  }

/**
 * Prints an error to System.err and increases the error count.
 * @param theError
 */
  private void logError(String theError)
  {
    errorCount++;
    System.err.println("error:" + theError);
  }

  private static void error(String message)
  {
    System.err.println("rmic: " + message);
    System.err.println("Try `rmic --help' for more information.");
    System.exit(1);
  }

  private static void usage()
  {
    System.out.println("Usage: rmic [OPTION]... CLASS...\n" + "\n"
                       + "	-keep 			Don't delete any intermediate files\n"
                       + "	-keepgenerated 		Same as -keep\n"
                       + "	-v1.1			Java 1.1 style stubs only\n"
                       + "	-vcompat		Java 1.1 & Java 1.2 stubs\n"
                       + "	-v1.2			Java 1.2 style stubs only\n"
                       + "	-g *			Generated debugging information\n"
                       + "	-depend *		Recompile out-of-date files\n"
                       + "	-nowarn	*		Suppress warning messages\n"
                       + "	-nocompile		Don't compile the generated files\n"
                       + "	-verbose 		Output what's going on\n"
                       + "	-classpath <path> *	Use given path as classpath\n"
                       + "	-d <directory> 		Specify where to place generated classes\n"
                       + "	-J<flag> *		Pass flag to Java\n"
                       + "	-help			Print this help, then exit\n"
                       + "	-version		Print version number, then exit\n" + "\n"
                       + "  * Option currently ignored\n"
                       + "Long options can be used with `--option' form as well.");
    System.exit(0);
  }

  static class MethodRef
    implements Comparable
  {
    Method meth;
    String sig;
    long hash;

    MethodRef(Method m)
    {
      meth = m;
      // We match on the name - but what about overloading? - XXX
      sig = m.getName();
      hash = RMIHashes.getMethodHash(m);
    }

    public int compareTo(Object obj)
    {
      MethodRef that = (MethodRef) obj;
      return (this.sig.compareTo(that.sig));
    }
  }
}