/*
 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code 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
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */
package com.oracle.truffle.api.instrument.impl;

import java.io.*;

import com.oracle.truffle.api.*;
import com.oracle.truffle.api.frame.*;
import com.oracle.truffle.api.instrument.*;
import com.oracle.truffle.api.nodes.*;

public class DefaultVisualizer implements Visualizer {

    private final ASTPrinter astPrinter;

    public DefaultVisualizer() {
        this.astPrinter = new DefaultASTPrinter();
    }

    public ASTPrinter getASTPrinter() {
        return astPrinter;
    }

    public String displaySourceLocation(Node node) {
        if (node == null) {
            return "<unknown>";
        }
        SourceSection section = node.getSourceSection();
        boolean estimated = false;
        if (section == null) {
            section = node.getEncapsulatingSourceSection();
            estimated = true;
        }

        String sourceString;
        if (section == null || section.getSource() == null) {
            sourceString = "<unknown source>";
        } else {
            String sourceName = new File(section.getSource().getName()).getName();
            int startLine = section.getStartLine();
            sourceString = String.format("%s:%d%s", sourceName, startLine, estimated ? "~" : "");
        }
        return sourceString;
    }

    public String displayMethodName(Node node) {
        if (node == null) {
            return null;
        }
        RootNode root = node.getRootNode();
        if (root == null) {
            return "unknown";
        }
        return root.getCallTarget().toString();
    }

    public String displayCallTargetName(CallTarget callTarget) {
        return callTarget.toString();
    }

    public String displayValue(Object value) {
        return value.toString();
    }

    public String displayIdentifier(FrameSlot slot) {
        return slot.getIdentifier().toString();
    }

}

@@ -1253,27 +1253,8 @@
 l;%0A%0A
-import java.io.*;%0A%0A
 impo
@@ -2014,25 +2014,24 @@
       %7D%0A
-%0A
         
 String s
@@ -2026,425 +2026,69 @@
     
-String sourceString;%0A        if (section == null %7C%7C section.getSource() == null) %7B%0A            sourceString = %22%3Cunknown source%3E%22;%0A        %7D else %7B%0A            String sourceName = new File(section.getSource().getName()).getName();%0A            int startLine = section.getStartLine();%0A            sourceString = String.format(%22%25s:%25d%25s%22, sourceName, startLine, estimated ? %22~%22 : %22%22);%0A        %7D%0A        return sourceString
+return section.getShortDescription() + (estimated ? %22~%22 : %22%22)
 ;%0A  

Revise DefaultVisualizer