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Diffstat (limited to 'tools/gnu/classpath/tools/rmic/MethodGenerator.java')
-rw-r--r-- | tools/gnu/classpath/tools/rmic/MethodGenerator.java | 285 |
1 files changed, 285 insertions, 0 deletions
diff --git a/tools/gnu/classpath/tools/rmic/MethodGenerator.java b/tools/gnu/classpath/tools/rmic/MethodGenerator.java new file mode 100644 index 000000000..335a0a65c --- /dev/null +++ b/tools/gnu/classpath/tools/rmic/MethodGenerator.java @@ -0,0 +1,285 @@ +/* MethodGenerator.java -- Generates methods for GIOP rmic 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. +*/ + +package gnu.classpath.tools.rmic; + +import gnu.classpath.tools.rmic.AbstractMethodGenerator; + +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 MethodGenerator implements AbstractMethodGenerator +{ + /** + * The method being defined. + */ + Method method; + + /** + * The parent code generator. + */ + SourceGiopRmicCompiler rmic; + + /** + * The previous method in the list, null for the first element. + * Used to avoid repretetive inclusion of the same hash code label. + */ + MethodGenerator previous = null; + + /** + * The hash character position. + */ + int hashCharPosition; + + /** + * 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 MethodGenerator(Method aMethod, SourceGiopRmicCompiler aRmic) + { + method = aMethod; + rmic = aRmic; + } + + /** + * Get the method name. + * + * @return the name of the method. + */ + public String getGiopMethodName() + { + String m = method.getName(); + if (m.startsWith("get")) + return "_get_J" + m.substring("get".length()); + else if (m.startsWith("set")) + return "_set_J" + m.substring("set".length()); + else + return m; + } + + /** + * 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("#giop_method_name", getGiopMethodName()); + vars.put("#argument_list", getArgumentList()); + vars.put("#argument_names", getArgumentNames()); + + vars.put("#argument_write", getStubParaWriteStatement()); + + if (method.getReturnType().equals(void.class)) + vars.put("#read_return", "return;"); + else + vars.put("#read_return", + "return " + + GiopIo.getReadStatement(method.getReturnType(), rmic)); + String thr = getThrows(); + if (thr.length() > 0) + vars.put("#throws", "\n throws " + thr); + else + vars.put("#throws", ""); + + if (method.getReturnType().equals(void.class)) + templateName = "StubMethodVoid.jav"; + else + { + vars.put("#write_result", + GiopIo.getWriteStatement(method.getReturnType(), "result", + rmic)); + templateName = "StubMethod.jav"; + } + + String template = rmic.getResource(templateName); + String generated = rmic.replaceAll(template, vars); + return generated; + } + + /** + * Generate this method handling fragment for the Tie class. + * + * @return the fragment to handle this method for the Tie class. + */ + public String generateTieMethod() + { + String templateName; + + Properties vars = new Properties(rmic.vars); + vars.put("#return_type", rmic.name(method.getReturnType())); + vars.put("#method_name", method.getName()); + vars.put("#giop_method_name", getGiopMethodName()); + vars.put("#argument_list", getArgumentList()); + vars.put("#argument_names", getArgumentNames()); + + vars.put("#argument_write", getStubParaWriteStatement()); + + if (previous == null || previous.getHashChar()!=getHashChar()) + vars.put("#hashCodeLabel"," case '"+getHashChar()+"':"); + else + vars.put("#hashCodeLabel"," // also '"+getHashChar()+"':"); + + if (method.getReturnType().equals(void.class)) + templateName = "TieMethodVoid.jav"; + else + { + vars.put("#write_result", + GiopIo.getWriteStatement(method.getReturnType(), "result", + rmic)); + templateName = "TieMethod.jav"; + } + vars.put("#read_and_define_args", getRda()); + + 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 getRda() + { + 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(" = "); + b.append(GiopIo.getReadStatement(args[i], rmic)); + 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 getStubParaWriteStatement() + { + StringBuffer b = new StringBuffer(); + Class[] args = method.getParameterTypes(); + + for (int i = 0; i < args.length; i++) + { + b.append(" "); + b.append(GiopIo.getWriteStatement(args[i], "p" + i, rmic)); + b.append("\n"); + } + return b.toString(); + } + + /** + * Get the hash char. + */ + public char getHashChar() + { + return getGiopMethodName().charAt(hashCharPosition); + } +} |