Coco.ts

/*-------------------------------------------------------------------------
Compiler Generator Coco/R,
Copyright (c) 1990, 2004 Hanspeter Moessenboeck, University of Linz
extended by M. Loeberbauer & A. Woess, University of Linz
ported from C# to Java by Wolfgang Ahorner
with improvements by Pat Terry, Rhodes University
ported from Java to Typescript by Stefan Kempinger, University of Linz

This program is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2, or (at your option) any
later version.

This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
for more details.

You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

As an exception, it is allowed to write an extension of Coco/R that is
used as a plugin in non-free software.

If not otherwise stated, any source code generated by Coco/R (other than
Coco/R itself) does not fall under the GNU General Public License.
------------------------------------------------------------------------*/
/*-------------------------------------------------------------------------
  Trace output options
  0 | A: prints the states of the scanner automaton
  1 | F: prints the First and Follow sets of all nonterminals
  2 | G: prints the syntax graph of the productions
  3 | I: traces the computation of the First sets
  4 | J: prints the sets associated with ANYs and synchronisation sets
  6 | S: prints the symbol table (terminals, nonterminals, pragmas)
  7 | X: prints a cross reference list of all syntax symbols
  8 | P: prints statistics about the Coco run

  Trace output can be switched on by the pragma
    $ { digit | letter }
  in the attributed grammar or as a command-line option
  -------------------------------------------------------------------------*/


import {Tab} from "./Tab";
import {DFA} from "./DFA";
import {Trace} from "./Trace";
import {ParserGen} from "./ParserGen";
import {Parser} from "./Parser";
import {Scanner} from "./Scanner";
import * as path from "path";

// let t0:Date,t1:Date,t2:Date,t3:Date,t4:Date

// t0 = new Date()

console.log("Coco/R (Apr 20, 2022)");
let srcName = undefined, nsName = undefined, frameDir = undefined, ddtString = undefined, outDir = undefined;
let retVal = 1;
for (let i = 2; i < process.argv.length; i++) {
    if (process.argv[i] == "-package" && i < process.argv.length - 1) nsName = process.argv[++i].trim();
    else if (process.argv[i] == "-frames" && i < process.argv.length - 1) frameDir = process.argv[++i].trim();
    else if (process.argv[i] == "-trace" && i < process.argv.length - 1) ddtString = process.argv[++i].trim();
    else if (process.argv[i] == "-o" && i < process.argv.length - 1) outDir = process.argv[++i].trim();
    else srcName = process.argv[i];
}
// t1 = new Date()
if (process.argv.length > 2 && srcName != undefined) {
    try {
        //new File(srcName).getParent();
        let srcDir = path.basename(path.dirname(srcName));

        let scanner = new Scanner(srcName);
        let parser = new Parser(scanner);

        parser.trace = new Trace(srcDir);
        parser.tab = new Tab(parser);
        parser.dfa = new DFA(parser);
        parser.pgen = new ParserGen(parser);

        parser.tab.srcName = srcName;
        parser.tab.srcDir = srcDir;
        parser.tab.nsName = nsName;
        parser.tab.frameDir = frameDir;
        parser.tab.outDir = (outDir != undefined) ? outDir : srcDir;
        if (ddtString != undefined) parser.tab.SetDDT(ddtString);

        // t2 = new Date()

        parser.Parse();

        // t3 = new Date()

        parser.trace.Close();
        console.log(parser.errors.count + " errors detected");
        if (parser.errors.count == 0) {
            retVal = 0;
        }
    } catch (e) {
        console.log(e);
    }
} else {
    console.log(
        "Usage: Coco Grammar.ATG {Option}\n" +
        "Options:\n" +
        "  -package <packageName>\n" +
        "  -frames  <frameFilesDirectory>\n" +
        "  -trace   <traceString>\n" +
        "  -o       <outputDirectory>\n" +
        "Valid characters in the trace string:\n" +
        "  A  trace automaton\n" +
        "  F  list first/follow sets\n" +
        "  G  print syntax graph\n" +
        "  I  trace computation of first sets\n" +
        "  J  list ANY and SYNC sets\n" +
        "  P  print statistics\n" +
        "  S  list symbol table\n" +
        "  X  list cross reference table\n" +
        "Scanner.frame and Parser.frame files needed in ATG directory\n" +
        "or in a directory specified in the -frames option.\n"
    );
    retVal = 0;
}

// t4=new Date()
//
// // @ts-ignore
// console.log(`Time Taken to execute = ${(t4 - t0)} ms`)
// // @ts-ignore
// console.log(`Time Taken to parse = ${(t3 - t2)} ms`)

process.exit(retVal);


// end Coco