Compilers Notes: Triangle

This is the zip file. It contains the source code


This is the jar file. It contains the bytecode


Here are some *.trifiles for you to try with the Triangle compiler:
Example One
Example Two
Example Three


To run the TriangleCompiler/Interpreter (you must have Java):

·        Download the jar file onto your computer

·        Using the command prompt type the following command inthe directory where you saved Triangle.jar (you may need to use ‘cd <yourdirectory>’):

C:\myDirectory>jar -xf Triangle.jar

·        Download one of the (dot).tri files listed above orcreate your own in the same directory

·        To compile it type:

C:\myDirectory>java Triangle.Compiler mySourceCode.tri

·        To run the compiled code (saved as 'obj.tam') type:

C:\myDirectory>java TAM.Interpreter obj.tam

·        That's it. You can now run any source code you find inthe book. If anyone knows how Example Three works, let me know.

To compile theTriangle Source Code:

          Before you try to do this, there is abug in the Scanner.java file.  Online 181, “case SourceFile.eot:” should be changed to “case ‘\000’:” asspecified by page 121 of your book. Once you have corrected this, you may beginthe following instructions, which pertain to the command prompt environment. If you’d like to use JBuilder7 Personal instead, click here.

·        Download the Triangle-src.zip file onto your computer

·        Unzip the file into a folder (preferably the C drivefor easy access). Rename it if you like.

·        Using the command prompt type the following command inthe directory where you’ve unzipped Triangle-src.zip (you may need to use ‘cd<your directory>’):

C:\myTriangle>javac –classpath TAM\*.java

This compiles all the java files located in yourTAM directory. At this point, you may want to verify this using your Windowsenvironment.

·        Similarly, you can compile the Triangle folder.

C:\myTriangle>javac –classpath “.” Triangle\*.java

The extra “.” is necessary because Triangle hasfive subdirectories with java files as well, and this tells the compiler tolook for those as well.

·         That’s it. You can now run the Triangle.Compiler and TAM.Interpreter using the commandsmentioned in the previous section

C:\myTriangle>java Triangle.CompilermySourceCode.tri
C:\myTriangle>java TAM.Interpreter obj.tam

·        You may notice that your class files and java files areknow mixed up in the same directories. If this bothers you, you can type:

C:\myTriangle>javac –d Tools –classpath “.” Triangle\*.java

What this does is place all the class files in the empty Tools directory thatyou already have. The only thing is that you must ‘cd’ into that directorybefore you trry to run Triangle.Compiler or TAM.Interpreter because those classfiles are now there.