Subversion Repositories programming

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Rev 261 Rev 281
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%%
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%%
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private Yylex lexer;
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private Yylex lexer;
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static boolean interactive = false;
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static boolean interactive = false;
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static String input_str = "Input: ";
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private static String input_str = "Input: ";
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private Robot r = new Robot();
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public void yyerror (String error)
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public void yyerror (String error)
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{
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{
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    /* No need to print out anything here, since we'll
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     * catch all errors later anyway. */
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    //System.out.println ("Parse Error: " + error);
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    //System.out.println ("Parse Error: " + error);
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}
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}
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int yylex ()
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int yylex ()
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{
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{
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        System.out.println("[Quit with CTRL-D]");
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        System.out.println("[Quit with CTRL-D]");
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        System.out.print(input_str);
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        System.out.print(input_str);
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        interactive = true;
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        interactive = true;
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    }
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    }
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    /* If we have had an error parsing, we probably tried to take too many
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     * apples out of the bag, so print out a nice error message. */
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    try
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    try
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    {
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    {
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        yyparser.yyparse();
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        yyparser.yyparse();
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    }
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    }
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    catch (Exception e)
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    catch (Exception e)
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    {
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    {
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        System.out.println ("Tried to take too many apples out of the bag!");
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        System.out.println ("Tried to take too many apples out of the bag!");
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    }
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    }
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    /* Print ending message if we are in interactive mode */
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    if (interactive)
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    if (interactive)
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    {
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    {
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        System.out.println();
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        System.out.println();
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        System.out.println("Have a nice day");
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        System.out.println("Have a nice day");
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    }
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    }
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}
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}
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/**
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 * Private class, which will be used to keep track of how many apples
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 * are in the bag. It could possibly be extended later to allow for a
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 * graphical reprensentation of the robot.
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 */
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public class Robot
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public class Robot
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{
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{
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    int val = 0;
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    private int val = 0;
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    void incVal () { val++; }
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    void incVal () { val++; }
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    void decVal () { val--; }
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    void decVal () { val--; }
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    int  getVal () { return val; }
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    int  getVal () { return val; }
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    void reset  () { val = 0; }
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    void reset  () { val = 0; }
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}
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}
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Robot r = new Robot();
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