lib6005.parser

Class Visualizer

java.lang.Object

lib6005.parser.Visualizer

public class Visualizer
extends Object

Support for visualizing a parse tree in a web browser, for debugging purposes.

Author:

6.005/6.031 course staff

Method Summary

Modifier and Type	Method and Description
static <NT extends Enum<NT>> void	showInBrowser(ParseTree<NT> parseTree) Tries to show a visualization of a parse tree in your web browser.
static <NT extends Enum<NT>> void	writeToFile(ParseTree<NT> parseTree, String filename) Generate an HTML visualization of the parse tree and write it to a file.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

showInBrowser

public static <NT extends Enum<NT>> void showInBrowser(ParseTree<NT> parseTree)

Tries to show a visualization of a parse tree in your web browser. If you are not connected to the internet, or if the method cannot launch the browser, it will print a very long URL to your console which you can then copy to your browser to see the visualization.

Type Parameters:

NT - the enumeration of symbols in the parse tree's grammar

Parameters:

parseTree - tree to visualize

writeToFile

public static <NT extends Enum<NT>> void writeToFile(ParseTree<NT> parseTree,
                                                     String filename)
                                              throws IOException

Generate an HTML visualization of the parse tree and write it to a file.

Type Parameters:

NT - the enumeration of symbols in the parse tree's grammar

Parameters:

parseTree - tree to visualize

filename - output file. Advisable to give it ".html" extension, though not required.

Throws:

IOException - if unable to write the file.