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Diffstat (limited to 'tools/gnu/classpath/tools/javah/JniPrintStream.java')
-rw-r--r-- | tools/gnu/classpath/tools/javah/JniPrintStream.java | 115 |
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(")"); + } +} |