| /* 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(")"); |
| } |
| } |