1 files changed, 243 insertions, 0 deletions
diff --git a/tools/gnu/classpath/tools/javah/CniPrintStream.java b/tools/gnu/classpath/tools/javah/CniPrintStream.java
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+++ b/tools/gnu/classpath/tools/javah/CniPrintStream.java
@@ -0,0 +1,243 @@
+/* CniPrintStream.java - PrintStream that emits CNI 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.OutputStream;
+import java.io.PrintStream;
+import java.lang.reflect.Modifier;
+import java.util.Arrays;
+import java.util.HashSet;
+
+import org.objectweb.asm.Type;
+
+public class CniPrintStream
+    extends PrintStream
+{
+  int currentModifiers = Modifier.PRIVATE;
+
+  // True if we saw an array type.
+  boolean sawArray;
+
+  // All the classes referenced by this header.
+  HashSet allClasses = new HashSet();
+
+  String[] previousPackage = new String[0];
+
+  public CniPrintStream(OutputStream out)
+  {
+    super(out);
+  }
+
+  public void addClass(ClassWrapper cw)
+  {
+    allClasses.add(cw.name);
+  }
+
+  public void setModifiers(int newMods)
+  {
+    newMods &= (Modifier.PUBLIC | Modifier.PROTECTED | Modifier.PRIVATE);
+    if (newMods != currentModifiers)
+      {
+        switch (newMods)
+          {
+          case Modifier.PUBLIC:
+            println("public:");
+            break;
+          case Modifier.PROTECTED:
+            println("public: // actually protected");
+            break;
+          case Modifier.PRIVATE:
+            println("private:");
+            break;
+          default:
+            println("public: // actually package-private");
+            break;
+          }
+        currentModifiers = newMods;
+      }
+  }
+
+  private String getName(Type type)
+  {
+    if (type == Type.BOOLEAN_TYPE)
+      return "jboolean";
+    else if (type == Type.BYTE_TYPE)
+      return "jbyte";
+    else if (type == Type.CHAR_TYPE)
+      return "jchar";
+    else if (type == Type.SHORT_TYPE)
+      return "jshort";
+    else if (type == Type.INT_TYPE)
+      return "jint";
+    else if (type == Type.LONG_TYPE)
+      return "jlong";
+    else if (type == Type.FLOAT_TYPE)
+      return "jfloat";
+    else if (type == Type.DOUBLE_TYPE)
+      return "jdouble";
+    else
+      {
+        assert type == Type.VOID_TYPE;
+        return "void";
+      }
+  }
+
+  public String getClassName(Type type)
+  {
+    String name = type.toString();
+    name = name.substring(1, name.length() - 1);
+    // Add the plain class name; we'll handle it when
+    // we process namespaces.
+    allClasses.add(name);
+    return "::" + name.replaceAll("/", "::") + " *";
+  }
+
+  public void print(Type type)
+  {
+    int arrayCount = 0;
+    if (type.getSort() == Type.ARRAY)
+      {
+        arrayCount = type.getDimensions();
+        for (int i = 0; i < arrayCount; ++i)
+          print("JArray< ");
+        type = type.getElementType();
+        sawArray = true;
+      }
+    if (type.getSort() == Type.OBJECT)
+      {
+        print(getClassName(type));
+      }
+    else
+      {
+        print(getName(type));
+      }
+    if (arrayCount > 0)
+      {
+        while (arrayCount-- > 0)
+          {
+            print(" > *");
+          }
+      }
+  }
+
+  private void indent(PrintStream out, int n)
+  {
+    for (int i = 0; i < n; ++i)
+      {
+        out.print("  ");
+      }
+  }
+
+  private void moveToPackage(PrintStream out, String[] pkgParts)
+  {
+    // Find greatest common part.
+    int commonIndex;
+    for (commonIndex = 0; commonIndex < previousPackage.length; ++commonIndex)
+      {
+        if (commonIndex >= pkgParts.length)
+          break;
+        if (! previousPackage[commonIndex].equals(pkgParts[commonIndex]))
+          break;
+      }
+    // Close old parts after the common part.
+    for (int j = previousPackage.length - 1; j >= commonIndex; --j)
+      {
+        indent(out, j + 1);
+        out.println("}");
+      }
+    // Open new parts.
+    for (int j = commonIndex; j < pkgParts.length; ++j)
+      {
+        indent(out, j + 1);
+        out.print("namespace ");
+        out.println(pkgParts[j]);
+        indent(out, j + 1);
+        out.println("{");
+      }
+    previousPackage = pkgParts;
+  }
+
+  private void writeClass(PrintStream out, String klass)
+  {
+    int index = klass.lastIndexOf('/');
+    String pkg = klass.substring(0, index);
+    String[] pkgParts = pkg.split("/");
+    String className = klass.substring(index + 1);
+    moveToPackage(out, pkgParts);
+    indent(out, pkgParts.length + 2);
+    out.print("class ");
+    out.print(className);
+    out.println(";");
+  }
+
+  public void printNamespaces(PrintStream out)
+  {
+    if (sawArray)
+      {
+        out.println("#include <gcj/array.h>");
+        out.println();
+      }
+
+    String[] classes = (String[]) allClasses.toArray(new String[0]);
+    Arrays.sort(classes);
+
+    boolean first = true;
+    boolean seen = false;
+    for (int i = 0; i < classes.length; ++i)
+      {
+        String klass = classes[i];
+        if (klass.startsWith("java/lang/") || klass.startsWith("java/io/")
+            || klass.startsWith("java/util/"))
+          continue;
+        if (first)
+          {
+            out.println("extern \"Java\"");
+            out.println("{");
+            first = false;
+            seen = true;
+          }
+        writeClass(out, klass);
+      }
+    if (seen)
+      {
+        moveToPackage(out, new String[0]);
+        out.println("}");
+      }
+  }
+}