package org.nanovm.converter;
//
// NanoVMTool, Converter and Upload Tool for the NanoVM
// Copyright (C) 2005 by Till Harbaum <Till@Harbaum.org>
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program 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 for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
// Parts of this tool are based on public domain code written by Kimberley
// Burchett: http://www.kimbly.com/code/classfile/
//
import java.io.PrintStream;
/**
* All classfile debugging information gets piped through this class.
* You can turn off categories of debug information by setting the
* appropriate String to null.
*/
public class Debug {
public static String strClass = "class: ";
public static String strConstPool = "CP: ";
public static String strField = "field: ";
public static String strMethod = "method: ";
public static String strCode = "code: ";
public static String strInterface = "interface: ";
public static String strLineNumbers = "line numbers: ";
public static String strLocalVariables = "local variables: ";
public static String strInnerClasses = "inner classes: ";
public static String strUnknownAttribute = "unknown attribute: ";
public static String strBadData = "bad data: ";
/**
* Indent subsequent messages. Subsequent messages will be indented by
* two spaces until outdent() is called. All calls to indent() should eventually
* be followed by a call to outdent().
*/
public static void indent() {
indentLevel++;
}
/**
* Outdent subsequent messages. This should only be called after a previous
* call to indent().
*/
public static void outdent() {
indentLevel--;
}
/**
* Enable or disable printing of any debug message.
*/
public static void setEnabled(boolean e) {
enabled = e;
}
/**
* Get whether printing of debug messages is enabled.
*/
public static boolean isEnabled() {
return enabled;
}
/**
* Redirect where debug messages are sent.
*/
public static void setOutput(PrintStream out) {
msgs = out;
}
/**
* Get the destination of debug messages.
*/
public static PrintStream getOutput() {
return msgs;
}
/**
* Print a debug message. If the prefix is null, the message is not printed.
* The message will be prefixed by blank space, the length of which is
* determined by the current level of indentation.
*/
public static void println(String prefix, String msg) {
if (enabled && prefix != null) {
for (int i = 0; i < indentLevel; i++)
msgs.print(" ");
msgs.println(prefix + msg);
}
}
private static PrintStream msgs = System.out;
private static boolean enabled = true;
private static int indentLevel;
}