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+/* MethodGenerator.java -- Generates methods for rmi compiler.
+ Copyright (C) 2006 Free Software Foundation
+
+ This file is part of GNU Classpath.
+
+ GNU Classpath is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2, or (at your option)
+ any later version.
+
+ GNU Classpath is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with GNU Classpath; see the file COPYING. If not, write to the
+ Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ 02110-1301 USA.
+
+ Linking this library statically or dynamically with other modules is
+ making a combined work based on this library. Thus, the terms and
+ conditions of the GNU General Public License cover the whole
+ combination.
+*/
+
+
+package gnu.classpath.tools.rmic;
+
+import gnu.classpath.tools.rmic.AbstractMethodGenerator;
+import gnu.java.rmi.server.RMIHashes;
+
+import java.lang.reflect.Method;
+import java.util.Properties;
+
+/**
+ * Keeps information about the single method and generates the code fragments,
+ * related to that method.
+ *
+ * @author Audrius Meskauskas, Lithuania (audriusa@Bioinformatics.org)
+ */
+public class RmiMethodGenerator
+ implements AbstractMethodGenerator
+{
+ /**
+ * The method being defined.
+ */
+ Method method;
+
+ /**
+ * The parent code generator.
+ */
+ SourceRmicCompiler rmic;
+
+ /**
+ * Create the new method generator for the given method.
+ *
+ * @param aMethod the related method.
+ * @param aRmic the Rmic generator instance, where more class - related
+ * information is defined.
+ */
+ public RmiMethodGenerator(Method aMethod, SourceRmicCompiler aRmic)
+ {
+ method = aMethod;
+ rmic = aRmic;
+ if (method.getParameterTypes().length == 0)
+ rmic.addZeroSizeObjecArray = true;
+ }
+
+ /**
+ * Get the method parameter declaration.
+ *
+ * @return the string - method parameter declaration.
+ */
+ public String getArgumentList()
+ {
+ StringBuffer b = new StringBuffer();
+
+ Class[] args = method.getParameterTypes();
+
+ for (int i = 0; i < args.length; i++)
+ {
+ b.append(rmic.name(args[i]));
+ b.append(" p" + i);
+ if (i < args.length - 1)
+ b.append(", ");
+ }
+ return b.toString();
+ }
+
+ /**
+ * Get the method parameter list only (no type declarations). This is used to
+ * generate the method invocations statement.
+ *
+ * @return the string - method parameter list.
+ */
+ public String getArgumentNames()
+ {
+ StringBuffer b = new StringBuffer();
+
+ Class[] args = method.getParameterTypes();
+
+ for (int i = 0; i < args.length; i++)
+ {
+ b.append(" p" + i);
+ if (i < args.length - 1)
+ b.append(", ");
+ }
+ return b.toString();
+ }
+
+ /**
+ * Get the list of exceptions, thrown by this method.
+ *
+ * @return the list of exceptions.
+ */
+ public String getThrows()
+ {
+ StringBuffer b = new StringBuffer();
+
+ Class[] args = method.getExceptionTypes();
+
+ for (int i = 0; i < args.length; i++)
+ {
+ b.append(rmic.name(args[i]));
+ if (i < args.length - 1)
+ b.append(", ");
+ }
+ return b.toString();
+ }
+
+ /**
+ * Generate this method for the Stub class.
+ *
+ * @return the method body for the stub class.
+ */
+ public String generateStubMethod()
+ {
+ String templateName;
+
+ Properties vars = new Properties(rmic.vars);
+ vars.put("#return_type", rmic.name(method.getReturnType()));
+ vars.put("#method_name", method.getName());
+ vars.put("#method_hash", getMethodHashCode());
+ vars.put("#argument_list", getArgumentList());
+ vars.put("#object_arg_list", getArgListAsObjectArray());
+ vars.put("#declaring_class", rmic.name(method.getDeclaringClass()));
+ vars.put("#class_arg_list", getArgListAsClassArray());
+
+ String thr = getThrows();
+ if (thr.length() > 0)
+ vars.put("#throws", "\n throws " + thr);
+ else
+ vars.put("#throws", "");
+
+ if (method.getReturnType().equals(void.class))
+ templateName = "Stub_12MethodVoid.jav";
+ else
+ {
+ templateName = "Stub_12Method.jav";
+ vars.put("#return_statement", getReturnStatement());
+ }
+
+ String template = rmic.getResource(templateName);
+ String generated = rmic.replaceAll(template, vars);
+ return generated;
+ }
+
+ /**
+ * Generate sentences for Reading and Defining Arguments.
+ *
+ * @return the sequence of sentences for reading and defining arguments.
+ */
+ public String getStaticMethodDeclarations()
+ {
+ StringBuffer b = new StringBuffer();
+ Class[] args = method.getParameterTypes();
+
+ for (int i = 0; i < args.length; i++)
+ {
+ b.append(" ");
+ b.append(rmic.name(args[i]));
+ b.append(" ");
+ b.append("p" + i);
+ b.append(" = ");
+ if (i < args.length - 1)
+ b.append("\n");
+ }
+ return b.toString();
+ }
+
+ /**
+ * Get the write statement for writing parameters inside the stub.
+ *
+ * @return the write statement.
+ */
+ public String getArgListAsObjectArray()
+ {
+ Class[] args = method.getParameterTypes();
+
+ if (args.length==0)
+ return "NO_ARGS";
+
+ StringBuffer b = new StringBuffer("new Object[] {");
+
+ for (int i = 0; i < args.length; i++)
+ {
+ if (!args[i].isPrimitive())
+ b.append("p"+i);
+ else
+ {
+ b.append("new "+rmic.name(WrapUnWrapper.getWrappingClass(args[i])));
+ b.append("(p"+i+")");
+ }
+ if (i<args.length-1)
+ b.append(", ");
+ }
+ b.append("}");
+ return b.toString();
+ }
+
+ /**
+ * Get the return statement, assuming that the returned object is placed into
+ * the variable "result".
+ */
+ public String getReturnStatement()
+ {
+ Class r = method.getReturnType();
+ if (r.equals(void.class))
+ return "";
+ else
+ {
+ if (r.isPrimitive())
+ {
+ String wcd = rmic.name(WrapUnWrapper.getWrappingClass(r));
+ return "return ((" + wcd + ") result)."
+ + WrapUnWrapper.getUnwrappingMethod(r) + ";";
+ }
+ else
+ return "return (" + rmic.name(r) + ") result;";
+ }
+ }
+
+ /**
+ * Get argument list as class array.
+ */
+ public String getArgListAsClassArray()
+ {
+ StringBuffer b = new StringBuffer();
+ Class[] args = method.getParameterTypes();
+
+ for (int i = 0; i < args.length; i++)
+ {
+ b.append(rmic.name(args[i]));
+ b.append(".class");
+ if (i < args.length - 1)
+ b.append(", ");
+ }
+ return b.toString();
+ }
+
+ /**
+ * RMI ties (previously named Skeletons) are no longer used since v 1.2. This
+ * method should never be called.
+ */
+ public String generateTieMethod()
+ {
+ throw new InternalError();
+ }
+
+ /**
+ * Get the method hash code.
+ */
+ public String getMethodHashCode()
+ {
+ return RMIHashes.getMethodHash(method)+"L";
+ }
+
+ /**
+ * Additional processing of the stub name (nothing to do for JRMP stubs).
+ */
+ public String convertStubName(String name)
+ {
+ return name;
+ }
+
+}