| /* JniHelper.java - name mangling and other JNI support |
| 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 org.objectweb.asm.Type; |
| |
| public class JniHelper |
| { |
| public static String getName(Main classpath, Type type) throws IOException |
| { |
| 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 if (type == Type.VOID_TYPE) |
| return "void"; |
| |
| if (type.getSort() == Type.ARRAY) |
| { |
| Type elt = type.getElementType(); |
| int eltSort = elt.getSort(); |
| if (type.getDimensions() == 1 && eltSort != Type.OBJECT) |
| return getName(classpath, elt) + "Array"; |
| return "jobjectArray"; |
| } |
| |
| // assert type.getSort() == Type.OBJECT; |
| String className = type.getClassName(); |
| // FIXME: is this correct? |
| if (className.equals("java/lang/Class") |
| || className.equals("java.lang.Class")) |
| return "jclass"; |
| if (className.equals("java/lang/String") |
| || className.equals("java.lang.String")) |
| return "jstring"; |
| |
| ClassWrapper klass = classpath.getClass(className); |
| if (klass.isThrowable()) |
| return "jthrowable"; |
| return "jobject"; |
| } |
| |
| public static String mangle(String name) |
| { |
| StringBuilder result = new StringBuilder(); |
| for (int i = 0; i < name.length(); ++i) |
| { |
| char c = name.charAt(i); |
| if (c == '_') |
| result.append("_1"); |
| else if (c == ';') |
| result.append("_2"); |
| else if (c == '[') |
| result.append("_3"); |
| else if (c == '/') |
| result.append("_"); |
| else if (c == '$') |
| result.append("_"); |
| else if ((c >= '0' && c <= '9') || (c >= 'a' && c <= 'z') |
| || (c >= 'A' && c <= 'Z')) |
| result.append(c); |
| else |
| { |
| result.append("_0"); |
| // Sigh. |
| String hex = "0000" + Integer.toHexString(c); |
| result.append(hex.substring(hex.length() - 4)); |
| } |
| } |
| return result.toString(); |
| } |
| } |