/*  SCCS - @(#)NPPP.java	1.4 -- 09/09/99 - 18:53:17 /

/*
 * Copyright (c) 1997 USC Brain Project. email nsl@java.usc.edu.
*/
/* NSLJ Pre-Processor
 * based on Guava
 * it uses Java to Bison F (JBF).
 * This inputs to this file get made by JB.
 * The inputs are: jbf/YYtokentypes.java, YYparse.java, YYlex.java
 *
 * $Log: NPPP.java,v $
 * Revision 1.4  1997/11/06 03:21:46  erhan
 * NSL3.0.b
 *
 * Revision 1.3  1997/07/30 21:10:30  erhan
 * nsl3.0
 *
 * Revision 1.2  1997/03/28 02:04:30  aalx
 * modified to include copyright notices to us or the appropriate author.
 *
 * Revision 1.1.1.1  1997/03/12 23:09:23  nsl
 * changed dir struct
 *
 * Revision 1.3  1997/02/27 07:07:34  erhan
 * 1
 *
 * Revision 1.2  1997/02/25 23:37:35  erhan
 * ok?
 *
 * Revision 1.1.1.1  1997/02/20 08:04:35  nsl
 *  Importing NPPP
 *
 */
package lx.src;
import java.io.*;
import pp.src.jbf.*;
import lx.src.util.*;
import lx.src.YYlex;


/** NSLJ Pre-Processor
 * based on JBF.
 */
public class NPPP {

public static YYlex yyl = new YYlex(System.in,System.out);
public static YYparse yyp = new YYparse(yyl,System.err);
public static NslPrePreProcessor nppp = new NslPrePreProcessor();

  /** Main runtime routine - call <tt>java NPPP</tt> to run. 
   */
public static void main(String argv[])
{
    boolean debuglex = false;
    boolean debugparse = false;
    boolean lexonly = false;
    boolean nocomments = false;
    YYtoken yylval;
    int llevel = 0;
    int plevel = 0;
    int lineno =1;

    System.err.println("NSL pre-pre-processor PHASE 1....");

//print out default preheader
System.out.println("/* This file is generated by  NSL3.0 preprocessor*/\n");

// Default import statements now gen using nslImport nslAllImport /*nslImport*/
//System.out.println("verbatim NSLJ"); /*nslImport*/

// System.out.println("\t\t/*$$ Line no: "+lineno+" $$*/");
//   lineno++;

// System.out.println(" import nslj.src.system.*;"); /*nslImport*/

// System.out.println("\t\t/*$$ Line no: "+lineno+" $$*/");
// lineno++;

// System.out.println(" import nslj.src.cmd.*;"); /*nslImport*/
// System.out.println("\t\t/*$$ Line no: "+lineno+" $$*/");
// lineno++;

// System.out.println(" import nslj.src.lang.*;"); /*nslImport*/
// System.out.println("\t\t/*$$ Line no: "+lineno+" $$*/");
// lineno++;

// System.out.println(" import nslj.src.math.*;"); /*nslImport*/
// System.out.println("\t\t/*$$ Line no: "+lineno+" $$*/");
// lineno++;

// System.out.println(" import nslj.src.display.*;"); /*nslImport*/
// System.out.println("\t\t/*$$ Line no: "+lineno+" $$*/");
// lineno++;

// System.out.println("verbatim off"); /*nslImport*/
// System.out.println("\t\t/*$$ Line no: "+lineno+" $$*/");
// lineno++;

    if (argv.length == 1 && 
	(argv[0].compareTo("-0")==0 || argv[0].compareTo("-h")==0)) {
	System.out.println("Usage: java NPPP [-nocomments] [-debug][-debuglex][-debugparse][-lex][-l Lexlevel][-p ParseLevel] <filename>.java");
    }

    for(int i=0;i<argv.length;i++) {
	if(argv[i].compareTo("-debug")==0) {debuglex = debugparse = true;}
	else if(argv[i].compareTo("-debuglex")==0) {debuglex = true;}
	else if(argv[i].compareTo("-nocomments")==0) {nocomments = true;}
	else if(argv[i].compareTo("-debugparse")==0) {debugparse = true;}
	else if(argv[i].compareTo("-lex")==0) {lexonly = true;}
	else if(argv[i].compareTo("-l")==0) {
	    if(i == argv.length) {
		System.err.println("-l requires an argument");
	 	return;
	    }
	    i++;
	    try {
		llevel = (Integer.valueOf(argv[i])).intValue();
	    } catch (Exception e) {
		System.err.println("-l requires an integer argument");
	 	return;
	    }
	} else if(argv[i].compareTo("-p")==0) {
	    if(i == argv.length) {
		System.err.println("-p requires an argument");
	 	return;
	    }
	    i++;
	    try {
		plevel = (Integer.valueOf(argv[i])).intValue();
	    } catch (Exception e) {
		System.err.println("-p requires an integer argument");
	 	return;
	    }
	}
    }
    nppp.setcommenting(nocomments);
    yyl = new YYlex(System.in,System.out);
    yyl.init(nppp);
    if(!lexonly) {
      yyp = new YYparse(yyl,System.err); 
      yyp.init(nppp);//new NslPrePreProcessor());
    }
    else yyp = null;

    if(debuglex) {
	System.out.println("lex debug turned on");
	if(llevel > 0) yyl.setdebug(llevel); else yyl.setdebug(true);
    }
    if(yyp != null && debugparse) {
	System.out.println("parse debug turned on");
	if(plevel > 0) yyp.setdebug(plevel); else yyp.setdebug(true);
    }
    try {        
/* LEX ONLY *******************************/
	if(lexonly) {
	    do {
		yylval = yyl.yylex();
	    } while (yylval != null);
	    System.out.println("/* RESIDUE*/ "+yyl.yytext.lexeme());
	    System.out.println("\n/* FIRST PASS DONE */");
	    if(debuglex)System.out.println("lex succeeded");
	} else {
	    yyp.yyparse();
	    //nppp.genCode();
	    if(debugparse)System.out.println("parse succeeded");
	}
    } catch (Exception e) {
        System.err.println("!!! exception detected:" + e.getMessage());
        e.printStackTrace();
        System.err.println("*** CAN NOT PARSE MOD FILE ! *** \n");
	System.exit(0);
    }
}

}; /*class NPPP*/