1 /* CniStubPrinter.java - Generate a CNI stub file
2 Copyright (C) 2006, 2007 Free Software Foundation, Inc.
4 This file is part of GNU Classpath.
6 GNU Classpath is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU Classpath is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU Classpath; see the file COPYING. If not, write to the
18 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
21 Linking this library statically or dynamically with other modules is
22 making a combined work based on this library. Thus, the terms and
23 conditions of the GNU General Public License cover the whole
26 As a special exception, the copyright holders of this library give you
27 permission to link this library with independent modules to produce an
28 executable, regardless of the license terms of these independent
29 modules, and to copy and distribute the resulting executable under
30 terms of your choice, provided that you also meet, for each linked
31 independent module, the terms and conditions of the license of that
32 module. An independent module is a module which is not derived from
33 or based on this library. If you modify this library, you may extend
34 this exception to your version of the library, but you are not
35 obligated to do so. If you do not wish to do so, delete this
36 exception statement from your version. */
39 package gnu.classpath.tools.javah;
42 import java.io.FileOutputStream;
43 import java.io.IOException;
44 import java.io.PrintStream;
45 import java.lang.reflect.Modifier;
46 import java.util.Iterator;
48 import org.objectweb.asm.Type;
49 import org.objectweb.asm.tree.MethodNode;
51 public class CniStubPrinter
54 protected CniStubPrinter(Main classpath, File outFile, boolean isDir,
57 super(classpath, outFile, isDir, force);
60 private void printDecl(CniPrintStream out, String className, MethodNode method)
64 out.print(method.name);
66 Type[] argTypes = Type.getArgumentTypes(method.desc);
67 for (int j = 0; j < argTypes.length; ++j)
71 out.print(argTypes[j]);
76 protected void writePreambleImpl(PrintStream out)
78 out.println("// This file is intended to give you a head start on implementing native");
79 out.println("// methods using CNI.");
80 out.println("// Be aware: running 'gcjh -stubs' once more for this class may");
81 out.println("// overwrite any edits you have made to this file.");
83 out.println("#include <gcj/cni.h>");
84 out.println("#include <java/lang/UnsupportedOperationException.h>");
87 protected PrintStream getPrintStreamImpl(FileOutputStream fos,
90 return new CniPrintStream(fos);
93 public void printClass(File filename, ClassWrapper klass) throws IOException
95 if (! klass.hasNativeMethod())
97 String className = klass.name.replaceAll("/", "::");
98 CniPrintStream out = (CniPrintStream) getPrintStream(filename + ".cc",
103 out.println("#include <" + klass.name + ".h>");
106 Iterator i = klass.methods.iterator();
107 boolean first = true;
110 MethodNode method = (MethodNode) i.next();
111 if (! Modifier.isNative(method.access))
116 out.print(Type.getReturnType(method.desc));
118 printDecl(out, className, method);
121 out.print(" throw new ::java::lang::UnsupportedOperationException(");
122 out.print("JvNewStringLatin1 (\"");
123 printDecl(out, className, method);
124 out.println("\"));");