On Aug 6, 2005, at 12:38 PM, Ian Darwin wrote:
Well, this is tiny and trivial but I guess its a start.
A river starts with a single raindrop
- javap replacement.
Attached.
This is a partial JavaP replacement that I wrote, using the
Reflection API. It doesn't implement the options e.g., for dumping
bytecode, but it does the most commonly-used part.
Note an earlier version of this has been used as the basis of
Kaffe's javap, so it will be dual licensed (GPL and ASF2). I have
an Apache committer's agreement for ASF2 on file with the ASF.
I assume that the entire work was written by you, and no improvements
from Kaffe have been incorporated?
geir
Ian
package introspection;
import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
/**
* JavaP prints structural information about classes.
* For each class, all public fields and methods are listed.
* The "Reflection" API is used to look up the information.
*
* @version $Id: MyJavaP.java,v 1.8 2005/08/01 17:14:05 ian Exp $
*/
public class MyJavaP {
/** Simple main program, process each class name
* found in argv.
*/
public static void main(String[] argv) {
MyJavaP pp = new MyJavaP();
if (argv.length == 0) {
System.err.println("Usage: MyJavaP className [...]");
System.exit(1);
} else for (int i=0; i<argv.length; i++)
pp.doClass(argv[i]);
}
/** Format the fields and methods of one class, given its name.
*/
protected void doClass(String className) {
try {
Class c = Class.forName(className);
System.out.println(c + " {");
int mods;
Field fields[] = c.getDeclaredFields();
for (int i = 0; i < fields.length; i++) {
if (!Modifier.isPrivate(fields[i].getModifiers())
&& !Modifier.isProtected(fields[i].getModifiers()))
System.out.println("\t" + fields[i]);
}
Constructor[] constructors = c.getConstructors();
for (int j = 0; j < constructors.length; j++) {
Constructor constructor = constructors[j];
System.out.println("\t" + constructor);
}
Method methods[] = c.getDeclaredMethods();
for (int i = 0; i < methods.length; i++) {
if (!Modifier.isPrivate(methods[i].getModifiers())
&& !Modifier.isProtected(methods[i].getModifiers()))
System.out.println("\t" + methods[i]);
}
System.out.println("}");
} catch (ClassNotFoundException e) {
System.err.println("Error: Class " +
className + " not found!");
} catch (Exception e) {
System.err.println("JavaP Error: " + e);
}
}
}
--
Geir Magnusson Jr +1-203-665-6437
[EMAIL PROTECTED]
