| /* CniStubPrinter.java - Generate a CNI stub file |
| Copyright (C) 2006, 2007 Free Software Foundation, Inc. |
| |
| 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. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| |
| package gnu.classpath.tools.javah; |
| |
| import java.io.File; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| import java.io.PrintStream; |
| import java.lang.reflect.Modifier; |
| import java.util.Iterator; |
| |
| import org.objectweb.asm.Type; |
| import org.objectweb.asm.tree.MethodNode; |
| |
| public class CniStubPrinter |
| extends Printer |
| { |
| protected CniStubPrinter(Main classpath, File outFile, boolean isDir, |
| boolean force) |
| { |
| super(classpath, outFile, isDir, force); |
| } |
| |
| private void printDecl(CniPrintStream out, String className, MethodNode method) |
| { |
| out.print(className); |
| out.print("::"); |
| out.print(method.name); |
| out.print("("); |
| Type[] argTypes = Type.getArgumentTypes(method.desc); |
| for (int j = 0; j < argTypes.length; ++j) |
| { |
| if (j > 0) |
| out.print(", "); |
| out.print(argTypes[j]); |
| } |
| out.print(")"); |
| } |
| |
| protected void writePreambleImpl(PrintStream out) |
| { |
| out.println("// This file is intended to give you a head start on implementing native"); |
| out.println("// methods using CNI."); |
| out.println("// Be aware: running 'gcjh -stubs' once more for this class may"); |
| out.println("// overwrite any edits you have made to this file."); |
| out.println(); |
| out.println("#include <gcj/cni.h>"); |
| out.println("#include <java/lang/UnsupportedOperationException.h>"); |
| } |
| |
| protected PrintStream getPrintStreamImpl(FileOutputStream fos, |
| ClassWrapper klass) |
| { |
| return new CniPrintStream(fos); |
| } |
| |
| public void printClass(File filename, ClassWrapper klass) throws IOException |
| { |
| if (! klass.hasNativeMethod()) |
| return; |
| String className = klass.name.replaceAll("/", "::"); |
| CniPrintStream out = (CniPrintStream) getPrintStream(filename + ".cc", |
| klass); |
| if (out == null) |
| return; |
| out.println(); |
| out.println("#include <" + klass.name + ".h>"); |
| out.println(); |
| |
| Iterator i = klass.methods.iterator(); |
| boolean first = true; |
| while (i.hasNext()) |
| { |
| MethodNode method = (MethodNode) i.next(); |
| if (! Modifier.isNative(method.access)) |
| continue; |
| if (! first) |
| out.println(); |
| first = false; |
| out.print(Type.getReturnType(method.desc)); |
| out.println(); |
| printDecl(out, className, method); |
| out.println(); |
| out.println("{"); |
| out.print(" throw new ::java::lang::UnsupportedOperationException("); |
| out.print("JvNewStringLatin1 (\""); |
| printDecl(out, className, method); |
| out.println("\"));"); |
| out.println("}"); |
| } |
| out.close(); |
| } |
| } |