1 files changed, 151 insertions, 0 deletions
diff --git a/tools/gnu/classpath/tools/javah/JniIncludePrinter.java b/tools/gnu/classpath/tools/javah/JniIncludePrinter.java
new file mode 100644
index 000000000..c01634007
--- /dev/null
+++ b/tools/gnu/classpath/tools/javah/JniIncludePrinter.java
@@ -0,0 +1,151 @@
+/* JniIncludePrinter.java - Generate a JNI header file
+ Copyright (C) 2006 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.lang.reflect.Modifier;
+import java.util.Iterator;
+
+import org.objectweb.asm.Type;
+import org.objectweb.asm.tree.FieldNode;
+import org.objectweb.asm.tree.MethodNode;
+
+public class JniIncludePrinter
+    extends Printer
+{
+
+  protected JniIncludePrinter(Main classpath)
+  {
+    super(classpath);
+  }
+
+  private void writeFields(ClassWrapper klass, JniPrintStream out)
+  {
+    boolean wroteAny = false;
+    for (; klass != null; klass = klass.superClass)
+      {
+        Iterator i = klass.fields.iterator();
+        while (i.hasNext())
+          {
+            FieldNode field = (FieldNode) i.next();
+            if (! Modifier.isStatic(field.access)
+                || ! Modifier.isFinal(field.access))
+              continue;
+            if (! (field.value instanceof Integer)
+                && ! (field.value instanceof Long))
+              continue;
+            
+            // Note that we don't want to mangle the field name.
+            String name = (JniHelper.mangle(klass.name) + "_" + field.name);
+            out.print("#undef ");
+            out.println(name);
+            out.print("#define ");
+            out.print(name);
+            out.print(" ");
+            out.print(field.value);
+            if (field.value instanceof Integer)
+              out.print("L");
+            else if (field.value instanceof Long)
+              out.print("LL");
+            out.println();
+            wroteAny = true;
+          }
+      }
+    if (wroteAny)
+      out.println();
+  }
+
+  public void printClass(File outputDir, ClassWrapper klass) throws IOException
+  {
+    if (! klass.hasNativeMethod())
+      return;
+    String xname = JniHelper.mangle(klass.name);
+    File outFile = new File(outputDir, xname + ".h");
+
+    JniPrintStream out = new JniPrintStream(classpath,
+                                            new FileOutputStream(outFile),
+                                            klass);
+    out.println("/* DO NOT EDIT THIS FILE - it is machine generated */");
+    out.println();
+    out.print("#ifndef __");
+    out.print(xname);
+    out.println("__");
+    out.print("#define __");
+    out.print(xname);
+    out.println("__");
+    out.println();
+    out.println("#include <jni.h>");
+    out.println();
+    out.println("#ifdef __cplusplus");
+    out.println("extern \"C\"");
+    out.println("{");
+    out.println("#endif");
+    out.println();
+
+    Iterator i = klass.methods.iterator();
+    while (i.hasNext())
+      {
+        MethodNode method = (MethodNode) i.next();
+        if (! Modifier.isNative(method.access))
+          continue;
+        out.print("JNIEXPORT ");
+        out.print(Type.getReturnType(method.desc));
+        out.print(" JNICALL ");
+        out.print(method, xname);
+        out.println(";");
+      }
+
+    out.println();
+
+    writeFields(klass, out);
+
+    out.println("#ifdef __cplusplus");
+    out.println("}");
+    out.println("#endif");
+    out.println();
+    out.print("#endif /* __");
+    out.print(xname);
+    out.println("__ */");
+
+    out.close();
+  }
+
+}