/usr/share/doc/javacc/examples/Interpreter/SPL.java is in javacc-doc 5.0-4.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 | /* Copyright (c) 2006, Sun Microsystems, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the Sun Microsystems, Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
/**
* Stupid Programming Language parser.
*/
public class SPL {
/** Main entry point. */
public static void main(String args[]) {
SPLParser parser;
if (args.length == 1) {
System.out.println("Stupid Programming Language Interpreter Version 0.1: Reading from file " + args[0] + " . . .");
try {
parser = new SPLParser(new java.io.FileInputStream(args[0]));
} catch (java.io.FileNotFoundException e) {
System.out.println("Stupid Programming Language Interpreter Version 0.1: File " + args[0] + " not found.");
return;
}
} else {
System.out.println("Stupid Programming Language Interpreter Version 0.1: Usage :");
System.out.println(" java SPL inputfile");
return;
}
try {
parser.CompilationUnit();
parser.jjtree.rootNode().interpret();
} catch (ParseException e) {
System.out.println("Stupid Programming Language Interpreter Version 0.1: Encountered errors during parse.");
e.printStackTrace();
} catch (Exception e1) {
System.out.println("Stupid Programming Language Interpreter Version 0.1: Encountered errors during interpretation/tree building.");
e1.printStackTrace();
}
}
}
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