Compile.java

/**
 *
 * Main Driver program for 312 exercise.
 * 
 * This class has been provided to students
 *
 * @Author: Roger Garside, John Mariani, John Vidler, Paul Rayson
 *
 *
 **/

import java.io.* ;

public class Compile {

	public static String fileName;

	/**
	 *
	 * main
	 *
	 **/

	private void go() throws IOException {
		String prefix = "Programs Folder" + File.separator + "program";
		int fileNumber = -1;
		int exitFlag = 0;
		System.out.println( "312START" );
		PrintStream out = null;
		String outputFile = new String( "res.txt" );
		boolean goon = true;

		try {
			out = new PrintStream( new FileOutputStream(outputFile) );
		} catch( Exception e ) {
			System.out.println("unable to open output file "+e);
			System.exit(0);
		}

		while( goon ) {
			fileNumber++ ;
			fileName = prefix + fileNumber;
			goon = ((new File(fileName)).exists());
			if( goon ) {
				System.out.println();
				System.out.println( "312FILE " + fileName );

				SyntaxAnalyser syn = new SyntaxAnalyser(fileName) ;
				syn.parse( out ) ;
			} else System.out.println(fileName+" does not exist");
		}

		System.out.println() ;
		System.out.println("312FINISH") ;
		out.flush();out.close();
		System.exit(exitFlag) ;
	} // end of main method

	public static void main(String args[]) throws IOException {
		Compile c = new Compile();
		c.go();
	};

} // end of class Compile