/*
* Copyright 2002-2003 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Sun designates this
* particular file as subject to the "Classpath" exception as provided
* by Sun in the LICENSE file that accompanied this code.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*/
package com.sun.tools.javah;
import com.sun.javadoc.*;
import java.io.*;
import java.util.*;
/**
* Returns internal type signature.
*
* @author Sucheta Dambalkar
*/
public class TypeSignature{
RootDoc root = null;
/* Signature Characters */
private static final String SIG_VOID = "V";
private static final String SIG_BOOLEAN = "Z";
private static final String SIG_BYTE = "B";
private static final String SIG_CHAR = "C";
private static final String SIG_SHORT = "S";
private static final String SIG_INT = "I";
private static final String SIG_LONG = "J";
private static final String SIG_FLOAT = "F";
private static final String SIG_DOUBLE = "D";
private static final String SIG_ARRAY = "[";
private static final String SIG_CLASS = "L";
public TypeSignature(RootDoc root){
this.root = root;
}
/*
* Returns the type signature of a field according to JVM specs
*/
public String getTypeSignature(String javasignature){
return getParamJVMSignature(javasignature);
}
/*
* Returns the type signature of a method according to JVM specs
*/
public String getTypeSignature(String javasignature, Type returnType){
String signature = null; //Java type signature.
String typeSignature = null; //Internal type signature.
Vector params = new Vector(); //List of parameters.
String paramsig = null; //Java parameter signature.
String paramJVMSig = null; //Internal parameter signature.
String returnSig = null; //Java return type signature.
String returnJVMType = null; //Internal return type signature.
String dimension = null; //Array dimension.
int startIndex = -1;
int endIndex = -1;
StringTokenizer st = null;
int i = 0;
// Gets the actual java signature without parentheses.
if(javasignature != null){
startIndex = javasignature.indexOf("(");
endIndex = javasignature.indexOf(")");
}
if(((startIndex != -1) && (endIndex != -1))
&&(startIndex+1 < javasignature.length())
&&(endIndex < javasignature.length())) {
signature = javasignature.substring(startIndex+1, endIndex);
}
// Separates parameters.
if(signature != null){
if(signature.indexOf(",") != -1){
st = new StringTokenizer(signature, ",");
if(st != null){
while (st.hasMoreTokens()) {
params.add(st.nextToken());
}
}
}else {
params.add(signature);
}
}
/* JVM type signature. */
typeSignature = "(";
// Gets indivisual internal parameter signature.
while(params.isEmpty() != true){
paramsig =((String)params.remove(i)).trim();
paramJVMSig = getParamJVMSignature(paramsig);
if(paramJVMSig != null){
typeSignature += paramJVMSig;
}
}
typeSignature += ")";
// Get internal return type signature.
returnJVMType = "";
if(returnType != null){
dimension = returnType.dimension();
}
if(dimension != null){
//Gets array dimension of return type.
while(dimension.indexOf("[]") != -1){
returnJVMType += "[";
int stindex = dimension.indexOf("]") + 1;
if(stindex <= dimension.length()){
dimension = dimension.substring(stindex);
}else dimension = "";
}
}
if(returnType != null){
returnSig = returnType.qualifiedTypeName();
returnJVMType += getComponentType(returnSig);
}else {
System.out.println("Invalid return type.");
}
typeSignature += returnJVMType;
return typeSignature;
}
/*
* Returns internal signature of a parameter.
*/
private String getParamJVMSignature(String paramsig){
String paramJVMSig = "";
String componentType ="";
if(paramsig != null){
if(paramsig.indexOf("[]") != -1) {
// Gets array dimension.
int endindex = paramsig.indexOf("[]");
componentType = paramsig.substring(0, endindex);
String dimensionString = paramsig.substring(endindex);
if(dimensionString != null){
while(dimensionString.indexOf("[]") != -1){
paramJVMSig += "[";
int beginindex = dimensionString.indexOf("]") + 1;
if(beginindex < dimensionString.length()){
dimensionString = dimensionString.substring(beginindex);
}else
dimensionString = "";
}
}
} else componentType = paramsig;
paramJVMSig += getComponentType(componentType);
}
return paramJVMSig;
}
/*
* Returns internal signature of a component.
*/
private String getComponentType(String componentType){
String JVMSig = "";
if(componentType != null){
if(componentType.equals("void")) JVMSig += SIG_VOID ;
else if(componentType.equals("boolean")) JVMSig += SIG_BOOLEAN ;
else if(componentType.equals("byte")) JVMSig += SIG_BYTE ;
else if(componentType.equals("char")) JVMSig += SIG_CHAR ;
else if(componentType.equals("short")) JVMSig += SIG_SHORT ;
else if(componentType.equals("int")) JVMSig += SIG_INT ;
else if(componentType.equals("long")) JVMSig += SIG_LONG ;
else if(componentType.equals("float")) JVMSig += SIG_FLOAT ;
else if(componentType.equals("double")) JVMSig += SIG_DOUBLE ;
else {
if(!componentType.equals("")){
ClassDoc classNameDoc = root.classNamed(componentType);
if(classNameDoc == null){
System.out.println("Invalid class type");
}else {
String classname = classNameDoc.qualifiedName();
String newclassname = classname.replace('.', '/');
JVMSig += "L";
JVMSig += newclassname;
JVMSig += ";";
}
}
}
}
return JVMSig;
}
}