54 lines
1.9 KiB
Java
54 lines
1.9 KiB
Java
/*
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Copyright (c) 2000 The Regents of the University of California.
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All rights reserved.
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Permission to use, copy, modify, and distribute this software for any
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purpose, without fee, and without written agreement is hereby granted,
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provided that the above copyright notice and the following two
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paragraphs appear in all copies of this software.
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IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
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DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
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OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
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CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
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INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
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ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO
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PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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*/
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import java.io.FileReader;
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import java.io.FileNotFoundException;
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import java.io.IOException;
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import java_cup.runtime.Symbol;
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/** The lexer driver class */
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class Lexer {
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/** Loops over lexed tokens, printing them out to the console */
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public static void main(String[] args) {
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args = Flags.handleFlags(args);
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for (int i = 0; i < args.length; i++) {
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FileReader file = null;
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try {
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file = new FileReader(args[i]);
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System.out.println("#name \"" + args[i] + "\"");
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CoolLexer lexer = new CoolLexer(file);
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lexer.set_filename(args[i]);
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Symbol s;
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while ((s = lexer.next_token()).sym != TokenConstants.EOF) {
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Utilities.dumpToken(System.out, lexer.get_curr_lineno(), s);
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}
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} catch (FileNotFoundException ex) {
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Utilities.fatalError("Could not open input file " + args[i]);
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} catch (IOException ex) {
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Utilities.fatalError("Unexpected exception in lexer");
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}
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}
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}
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}
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