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Comments on: CS 330 Lecture 20 – A Logo Compiler with Conditionals and Loops https://twodee.org/blog/6878 Mon, 11 Mar 2013 15:58:58 +0000 hourly 1 https://wordpress.org/?v=5.7.1 By: John Rankin https://twodee.org/blog/6878#comment-50007 Mon, 11 Mar 2013 15:58:58 +0000 http://www.twodee.org/blog/?p=6878#comment-50007 -bash-4.1$ java CompilerLoogo src/square.logo
-bash-4.1$ java LVM logo.out 5
Exception in thread “main” java.awt.HeadlessException:
No X11 DISPLAY variable was set, but this program performed an operation which requires it.
at java.awt.GraphicsEnvironment.checkHeadless(GraphicsEnvironment.java:207)
at java.awt.Window.(Window.java:535)
at java.awt.Frame.(Frame.java:420)
at javax.swing.JFrame.(JFrame.java:218)
at LVM.(LVM.java:34)
at LVM.main(LVM.java:20)

]]> By: John Rankin https://twodee.org/blog/6878#comment-49994 Mon, 11 Mar 2013 15:17:52 +0000 http://www.twodee.org/blog/?p=6878#comment-49994 Can you give a explicit example of how I can Compile and RUN src/square.logo ??

I seem to be able to compile it but i cant run it

I tried lots of ways .. I dunno what im doing really.

-bash-4.1$ java LVM logo.out
Exception in thread “main” java.lang.ArrayIndexOutOfBoundsException: 1
at LVM.main(LVM.java:20)
-bash-4.1$ java LVM
Exception in thread “main” java.lang.ArrayIndexOutOfBoundsException: 0
at LVM.main(LVM.java:20)

-bash-4.1$ java LVM < logo.out
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 0
at LVM.main(LVM.java:20)

..i dunno.????

]]> By: thepoynt https://twodee.org/blog/6878#comment-49981 Mon, 11 Mar 2013 14:40:19 +0000 http://www.twodee.org/blog/?p=6878#comment-49981 In reply to Chris Johnson.

I see. I was just running the compiler *face palm*. Now when I hardcode in the values in “new LVM(“todo.logo”, 1);” and run LVM, I get

Exception in thread “main” java.io.StreamCorruptedException: invalid stream header: 61203C2D

]]> By: Chris Johnson https://twodee.org/blog/6878#comment-49904 Mon, 11 Mar 2013 10:33:11 +0000 http://www.twodee.org/blog/?p=6878#comment-49904 In reply to Nolan.

I see this error when I try to run something that doesn’t have a main with String[] parameter. Did you remove the String[] parameter on main?

]]> By: Nolan https://twodee.org/blog/6878#comment-49737 Mon, 11 Mar 2013 02:26:40 +0000 http://www.twodee.org/blog/?p=6878#comment-49737 I’m getting editor does not contain a main type when I hardcode in the path for the logo file in CompilerLoogo.java. Any suggestions?

]]> By: Chris Johnson https://twodee.org/blog/6878#comment-49703 Mon, 11 Mar 2013 00:34:13 +0000 http://www.twodee.org/blog/?p=6878#comment-49703 In reply to trey.

But as I mention above, using Eclipse might be easier since LVM will try to create a window.

]]> By: Chris Johnson https://twodee.org/blog/6878#comment-49702 Mon, 11 Mar 2013 00:32:59 +0000 http://www.twodee.org/blog/?p=6878#comment-49702 In reply to Nolan.

Run CompilerLoogo on your Logo source file. It’ll produce a logo.out in your project directory. Run LVM on logo.out. See to TODO comments in both these files to hardcode paths.

]]> By: Chris Johnson https://twodee.org/blog/6878#comment-49700 Mon, 11 Mar 2013 00:31:36 +0000 http://www.twodee.org/blog/?p=6878#comment-49700 In reply to Di.

What you use as a workspace does not matter. How does a project come into existence?

]]> By: Chris Johnson https://twodee.org/blog/6878#comment-49699 Mon, 11 Mar 2013 00:30:08 +0000 http://www.twodee.org/blog/?p=6878#comment-49699 In reply to trey.

The ANTLR jar file needs to be on your classpath. That can be set through an environment variable or via the java utility: java -cp /path/to/antlr.jar:. MyJavaClass.

]]> By: trey https://twodee.org/blog/6878#comment-49696 Mon, 11 Mar 2013 00:16:50 +0000 http://www.twodee.org/blog/?p=6878#comment-49696 I have been trying to run the makefile, but I am getting 100+ errors all saying “package org.antlr.v4.runtime does not exist”. Where am I supposed to put the antlr jar? Or is there some way to use eclipse to do this as I am currently just running from the thingies.

]]>