1 files changed, 115 insertions, 0 deletions
diff --git a/tools/gnu/classpath/tools/javah/JniPrintStream.java b/tools/gnu/classpath/tools/javah/JniPrintStream.java
new file mode 100644
index 000000000..a0461f475
--- /dev/null
+++ b/tools/gnu/classpath/tools/javah/JniPrintStream.java
@@ -0,0 +1,115 @@
+/* JniPrintStream.java - PrintStream that emits JNI declarations
+ 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.IOException;
+import java.io.OutputStream;
+import java.io.PrintStream;
+import java.lang.reflect.Modifier;
+import java.util.HashMap;
+import java.util.Iterator;
+
+import org.objectweb.asm.Type;
+import org.objectweb.asm.tree.MethodNode;
+
+public class JniPrintStream
+    extends PrintStream
+{
+  Main classpath;
+
+  // This is used to determine whether a method has an overload.
+  HashMap methodNameMap = new HashMap();
+
+  public JniPrintStream(Main classpath, OutputStream out, ClassWrapper klass)
+  {
+    super(out);
+    this.classpath = classpath;
+    computeOverloads(klass);
+  }
+
+  private void computeOverloads(ClassWrapper klass)
+  {
+    Iterator i = klass.methods.iterator();
+    while (i.hasNext())
+      {
+        MethodNode method = (MethodNode) i.next();
+        if (! Modifier.isNative(method.access))
+          continue;
+        if (methodNameMap.containsKey(method.name))
+          {
+            Integer val = (Integer) methodNameMap.get(method.name);
+            methodNameMap.put(method.name, new Integer(val.intValue() + 1));
+          }
+        else
+          methodNameMap.put(method.name, new Integer(1));
+      }
+  }
+
+  public void print(Type type) throws IOException
+  {
+    print(JniHelper.getName(classpath, type));
+  }
+
+  public void print(MethodNode method, String className) throws IOException
+  {
+    print("Java_");
+    print(className);
+    print("_");
+    print(JniHelper.mangle(method.name));
+    Integer overloadCount = (Integer) methodNameMap.get(method.name);
+    if (overloadCount.intValue() > 1)
+      {
+        print("__");
+        int lastOffset = method.desc.lastIndexOf(')');
+        print(JniHelper.mangle(method.desc.substring(1, lastOffset)));
+      }
+    print(" (JNIEnv *env");
+    if (Modifier.isStatic(method.access))
+      print(", jclass");
+    else
+      print(", jobject");
+    Type[] types = Type.getArgumentTypes(method.desc);
+    for (int i = 0; i < types.length; ++i)
+      {
+        print(", ");
+        print(types[i]);
+      }
+    print(")");
+  }
+}