package lombok.core.debug;
import java.lang.ref.WeakReference;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.atomic.AtomicLong;
import org.eclipse.jdt.internal.compiler.ast.ASTNode;
import org.eclipse.jdt.internal.compiler.ast.CompilationUnitDeclaration;
public class DebugSnapshot implements Comparable<DebugSnapshot> {
private static AtomicLong counter = new AtomicLong();
private final long when, id = counter.getAndIncrement();
private final long bits;
private final List<StackTraceElement> trace;
private final String threadName;
private final String message;
private final Object[] params;
private final WeakReference<CompilationUnitDeclaration> owner;
public DebugSnapshot(CompilationUnitDeclaration owner, int stackHiding, String message, Object... params) {
this.when = System.currentTimeMillis();
this.bits = owner.bits;
if (stackHiding < 0) {
this.trace = null;
} else {
StackTraceElement[] stackTrace = new Throwable().getStackTrace();
this.trace = new ArrayList<StackTraceElement>(Math.max(0, stackTrace.length - stackHiding - 1));
for (int i = 1 + stackHiding; i < stackTrace.length; i++) trace.add(stackTrace[i]);
}
this.threadName = Thread.currentThread().getName();
this.message = message;
this.params = params == null ? new Object[0] : params;
this.owner = new WeakReference<CompilationUnitDeclaration>(owner);
}
private String ownerName() {
CompilationUnitDeclaration node = owner.get();
if (node == null) return "--GCed--";
char[] tn = node.getMainTypeName();
char[] fs = node.getFileName();
if (tn == null || tn.length == 0) {
return (fs == null || fs.length == 0) ? "--UNKNOWN--" : new String(fs);
}
return new String(tn);
}
public String shortToString() {
StringBuilder out = new StringBuilder();
out.append(String.format("WHEN: %14d THREAD: %s AST: %s HAMB: %b -- ", when, threadName, ownerName(), 0 != (bits & ASTNode.HasAllMethodBodies)));
if (message != null) out.append(" ").append(String.format(message, params));
return out.toString();
}
@Override public String toString() {
StringBuilder out = new StringBuilder();
out.append(shortToString()).append("\n");
if (trace == null) {
out.append(" Stack Omitted");
} else {
for (StackTraceElement elem : trace) {
out.append(" ").append(elem.toString()).append("\n");
}
}
return out.toString();
}
@Override public int compareTo(DebugSnapshot o) {
return Long.valueOf(id).compareTo(o.id);
}
}