Prev: Understanding java app CPU usage under Linux
Next: get name of operation system
From: Joshua Maurice on 27 May 2010 23:44
This is probably one of the last updates for a while. It appears that
the "magic code" which I wanted from the start is simply the
following. When you transitively close the dependencies this gives
over super types, I think that it is sufficient to do an incrementally
correct, incremental, cascading rebuild with possible early
termination. At least, the tests I have thus far tell me so.


package com.informatica.devops.jicb.incr_java;

import java.util.HashSet;
import java.util.Set;

import javax.lang.model.element.Element;
import javax.lang.model.element.ElementKind;

import com.sun.source.tree.CompilationUnitTree;
import com.sun.source.tree.Tree;
import com.sun.source.util.TreeScanner;
import com.sun.tools.javac.tree.JCTree;
import com.sun.tools.javac.tree.TreeInfo;

public class CompileDependencies {
//must call this after JavacTask.analyze to get useful information
public static Set<String> get(final CompilationUnitTree tree) {
final Visitor visitor = new Visitor();
visitor.scan(tree, null);
return visitor.fullNamesOfAllFoundTypes;
}

private static class Visitor extends TreeScanner<Void, Void> {
public final Set<String> fullNamesOfAllFoundTypes = new
HashSet<String>();
@Override public Void scan(Tree node, Void v) {
if (node != null) {
Element ele = TreeInfo.symbol((JCTree)node);
for ( ; ele != null; ele = ele.getEnclosingElement())
{
final ElementKind kind = ele.getKind();
if (ElementKind.CLASS == kind
|| ElementKind.INTERFACE == kind
|| ElementKind.ANNOTATION_TYPE == kind
|| ElementKind.ENUM == kind) {
fullNamesOfAllFoundTypes.add(ele.toString());
}
}
}
super.scan(node, null);
return null;
}
}
}
First  |  Prev  | 
Pages: 16 17 18 19 20 21 22 23 24 25 26
Prev: Understanding java app CPU usage under Linux
Next: get name of operation system