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/**
* @(#) GL4JavaReflections.java
*/
package gl4java;
import java.lang.System;
import java.lang.String;
import java.lang.reflect.*;
/**
* The function-declaration holder !
*
* @version 1.00, 12. Novemeber 1999
* @author Sven Goethel
*
*/
public class GL4JavaReflections
implements Cloneable
{
public Object methodClassInstance=null;
public Class type=null;
public String methodName=null;
public Class[] argList=null;
public GL4JavaReflections ( Object methodClassInstance,
Class type, String methodName,
Class[] argList )
{
this.methodClassInstance=methodClassInstance;
this.type=type;
this.methodName=methodName;
this.argList=argList;
}
protected Object clone()
throws CloneNotSupportedException
{
int i;
Class[] args = new Class[argList.length];
for(i=0; i<argList.length; i++)
args[i] = argList[i];
GL4JavaReflections nobj =
new GL4JavaReflections(methodClassInstance,
type, methodName, args);
return nobj;
}
public String getMethodSignature()
{
return getMethodSignature(argList, type);
}
public static String patchJvmSigType(String s)
{
if(s==null)
return null;
if(s.startsWith("["))
return s;
if(s.equals("boolean"))
return "Z";
if(s.equals("byte"))
return "B";
if(s.equals("char"))
return "C";
if(s.equals("short"))
return "S";
if(s.equals("int"))
return "I";
if(s.equals("long"))
return "J";
if(s.equals("float"))
return "F";
if(s.equals("double"))
return "D";
if(s.equals("void"))
return "V";
return s;
}
public static String getMethodSignature(Class[] args, Class type)
{
String res = new String();
String helper = null;
int i,j;
res += "(";
for (i=0; i<args.length; i++)
{
res += patchJvmSigType(args[i].getName());
}
res += ")"+patchJvmSigType(type.getName());
return res;
}
public static GL4JavaReflections findMethod(Object methodClassInstance,
String methodName,
String signature)
{
Method[] methods = null;
try {
methods =
methodClassInstance.getClass().getDeclaredMethods();
} catch (Exception ex) {
System.out.println("ERROR: GL4JavaReflections.findMethod");
ex.printStackTrace();
return null;
}
GL4JavaReflections res=null;
Method method = null;
String name = null;
Class[] args = null;
Class t = null;
for(int i=0; i<methods.length; i++)
{
method = methods[i];
name = method.getName();
if(name.equals(methodName))
{
args = method.getParameterTypes();
t = method.getReturnType();
if(signature==null ||
signature.equals(getMethodSignature(args, t))
)
{
res = new GL4JavaReflections(
methodClassInstance,
method.getReturnType(),
methodName,
args);
return res;
}
}
}
System.out.println("GL4JavaReflections.findMethod: could not find method: "+methodName+" "+signature);
return null;
}
public static String findMethodSignature (Object methodClassInstance,
String methodName,
String signature)
{
GL4JavaReflections ref =
findMethod(methodClassInstance, methodName, signature);
if(ref==null) return null;
return ref.getMethodSignature();
}
}
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