49 lines
1.8 KiB
Java
49 lines
1.8 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.InputStreamReader;
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import java.io.IOException;
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import java_cup.runtime.Symbol;
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/** The parser driver class */
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class Parser {
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/** Reads lexed tokens from consosle, and outputs the parse tree */
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public static void main(String[] args) {
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args = Flags.handleFlags(args);
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try {
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CoolTokenLexer lexer = new CoolTokenLexer(new InputStreamReader(System.in));
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CoolParser parser = new CoolParser(lexer);
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Symbol result = (Flags.parser_debug
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? parser.debug_parse()
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: parser.parse());
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if (parser.omerrs > 0) {
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System.err.println("Compilation halted due to lex and parse errors");
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System.exit(1);
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}
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((Program)result.value).dump_with_types(System.out, 0);
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} catch (Exception ex) {
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ex.printStackTrace(System.err);
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Utilities.fatalError("Unexpected exception in parser");
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}
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}
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}
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