/*******************************************************************************
* Copyright (c) 2004, 2005 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
/*
*/
package org.eclipse.jem.internal.proxy.common;
import java.util.HashMap;
/**
* This is used for mapping between JNI format and non-JNI format. It also has the
* maps for primitives.
* @since 1.0.0
*/
public class MapTypes {
public final static HashMap MAP_SHORTSIG_TO_TYPE = new HashMap(8);
public final static HashMap MAP_TYPENAME_TO_SHORTSIG = new HashMap(8);
static {
MapTypes.MAP_SHORTSIG_TO_TYPE.put("B", Byte.TYPE); //$NON-NLS-1$
MapTypes.MAP_SHORTSIG_TO_TYPE.put("C", Character.TYPE); //$NON-NLS-1$
MapTypes.MAP_SHORTSIG_TO_TYPE.put("D", Double.TYPE); //$NON-NLS-1$
MapTypes.MAP_SHORTSIG_TO_TYPE.put("F", Float.TYPE); //$NON-NLS-1$
MapTypes.MAP_SHORTSIG_TO_TYPE.put("I", Integer.TYPE); //$NON-NLS-1$
MapTypes.MAP_SHORTSIG_TO_TYPE.put("J", Long.TYPE); //$NON-NLS-1$
MapTypes.MAP_SHORTSIG_TO_TYPE.put("S", Short.TYPE); //$NON-NLS-1$
MapTypes.MAP_SHORTSIG_TO_TYPE.put("Z", Boolean.TYPE); //$NON-NLS-1$
MapTypes.MAP_TYPENAME_TO_SHORTSIG.put("byte","B"); //$NON-NLS-1$ //$NON-NLS-2$
MapTypes.MAP_TYPENAME_TO_SHORTSIG.put("char","C"); //$NON-NLS-1$ //$NON-NLS-2$
MapTypes.MAP_TYPENAME_TO_SHORTSIG.put("double","D"); //$NON-NLS-1$ //$NON-NLS-2$
MapTypes.MAP_TYPENAME_TO_SHORTSIG.put("float","F"); //$NON-NLS-1$ //$NON-NLS-2$
MapTypes.MAP_TYPENAME_TO_SHORTSIG.put("int","I"); //$NON-NLS-1$ //$NON-NLS-2$
MapTypes.MAP_TYPENAME_TO_SHORTSIG.put("long","J"); //$NON-NLS-1$ //$NON-NLS-2$
MapTypes.MAP_TYPENAME_TO_SHORTSIG.put("short","S"); //$NON-NLS-1$ //$NON-NLS-2$
MapTypes.MAP_TYPENAME_TO_SHORTSIG.put("boolean","Z"); //$NON-NLS-1$ //$NON-NLS-2$
}
/**
* Convert formal type name for an array (i.e. java.lang.Object[]
* to the jni format (i.e. [Ljava.lang.Object;)
* This is used when a name is passed in from the IDE side.
* The VM side uses the jni format, and all of proxy uses the jni format.
*
* @param classname
* @return string jni form of name.
*
* @since 1.0.0
*/
public static String getJNIFormatName(String classname) {
if (classname.length() == 0 || !classname.endsWith("]")) //$NON-NLS-1$
return classname; // Not an array,or invalid
StringBuffer jni = new StringBuffer(classname.length());
int firstOpenBracket = classname.indexOf('[');
int ob = firstOpenBracket;
while (ob > -1) {
int cb = classname.indexOf(']', ob);
if (cb == -1)
break;
jni.append('[');
ob = classname.indexOf('[', cb);
}
String finalType = classname.substring(0, firstOpenBracket).trim();
if (finalType != null) {
String shortSig = (String) MapTypes.MAP_TYPENAME_TO_SHORTSIG.get(finalType);
if (shortSig == null) {
jni.append('L');
jni.append(finalType);
jni.append(';');
} else {
jni.append(shortSig);
}
}
return jni.toString();
}
/**
* This converts from the JNI format to the formal typename.
*
* @param jniName
* @return formal typename
*
* @since 1.1.0
*/
public static String getFormalTypeName(String jniName) {
if (jniName.charAt(0) == '[') {
// It is an array
int dims = jniName.lastIndexOf('[')+1; // Number of dimensions
int startType = dims;
StringBuffer fName = new StringBuffer(jniName.length()+(2*dims));
if (jniName.charAt(startType) == 'L')
fName.append(jniName.substring(startType+1, jniName.length()-1)); // For "[Ljava.lang.String;" return "java.lang.String"
else if (jniName.length() == startType+1) {
// Possible primitive
Class type = (Class) MAP_SHORTSIG_TO_TYPE.get(jniName.substring(startType, startType+1));
if (type != null) {
fName.append(type.getName());
} else
return ""; // Invalid if no 'L' and not a primitive. //$NON-NLS-1$
} else
return ""; // Invalid, must be either a primitive or 'L' type. //$NON-NLS-1$
while(dims-- > 0) {
fName.append("[]"); //$NON-NLS-1$
}
return fName.toString();
} else if (jniName.length() == 1) {
// Possible primitive.
Class type = (Class) MAP_SHORTSIG_TO_TYPE.get(jniName);
if (type != null) {
return type.getName();
}
}
// If got here then just a name as is.
return jniName;
}
/**
* Convert the formal type name, with the given number of dimensions,
* to an array JNI type.
* @param finalComponent final component name, should not be an array type.
* @param dimensions number of dimensions for the array.
* @return
*
* @since 1.1.0
*/
public static String getJNITypeName(String finalComponent, int dimensions) {
StringBuffer jni = new StringBuffer(finalComponent.length()+dimensions+2);
while (dimensions-- > 0) {
jni.append('[');
}
String shortSig = (String) MapTypes.MAP_TYPENAME_TO_SHORTSIG.get(finalComponent);
if (shortSig == null) {
jni.append('L');
jni.append(finalComponent);
jni.append(';');
} else {
jni.append(shortSig);
}
return jni.toString();
}
}