JFLEX Ошибка: Ошибка синтаксиса @ Символ: ID (...) Ошибка: Незаконное использование зарезервированных слов

Question

У меня есть следующий .flex файл:

package mini_c; 

import java_cup.runtime.*; 
import static mini_c.sym.*; 

%% 

%class Lexer 
%unicode   /* The characters are unicode */ 
%cup    /* Syntax analyser with cup (Parser part) */ 
%cupdebug   /* ? */ 
%line    /* Decompose by line */ 
%column    /* Decompose by column */ 
// %yylexthrow Exception  /* Can throw exceptions */ 

%{ 
    /* No need for preamble in JAVA */ 
%} 

WhiteSpace = [ \t\r\n]+ 
Integer  = [:digit:]+ // Digit is defined on jflex 
Identifier = ([:jletter:] | [_]) ([:jletter:] | [:digit:] | [_])* // Will be used to read function names 

%% 
<YYINITIAL> { 
    "(" { return new Symbol(LPAR, yyline, yycolumn); } 
    ")" { return new Symbol(RPAR, yyline, yycolumn); } 
    "{" 
     { return new Symbol(LB, yyline, yycolumn); } 
    "}" { return new Symbol(RB, yyline, yycolumn); } 
    ";" { return new Symbol(SEMICOLON, yyline, yycolumn);} 
    "return" 
     { return new Symbol(RETURN, yyline, yycolumn); } 
    {Integer} 
     { return new Symbol(CST, yyline, yycolumn, Integer.parseInt(yytext())); } 
    {Identifier} 
     { return new Symbol(IDENT, yyline, yycolumn, yytext()); } 
    . { throw new Exception(String.format("Error in line %d, column %d: illegal character '%s'\n", yyline, yycolumn, yytexy())); } 
} 

Когда я пишу jflex Lexer.flex (Lexer.flex, очевидно, имя файла) следующие дисплеи на ЦМД:

Reading "Lexer.flex" 

Warning : Macro "WhiteSpace" has been declared but never used. 
Constructing NFA : 31 states in NFA 
Converting NFA to DFA : 
................ 
18 states before minimization, 15 states in minimized DFA 
Old file "Lexer.java" saved as "Lexer.java~" 
Writing code to "Lexer.java" 
Error: Syntax error @ Symbol: ID (unknown:4/15 - unknown:4/20) 
Error : Illegal use of reserved word 
Warning : Scanner at 6(1): Unrecognized character '%' -- ignored 
Warning : Scanner at 6(2): Unrecognized character '%' -- ignored 
Warning : Scanner at 8(1): Unrecognized character '%' -- ignored 
Error: Syntax error @ Symbol: ID (unknown:8/2 - unknown:8/6) 
Warning : Scanner at 9(1): Unrecognized character '%' -- ignored 
Warning : Scanner at 10(1): Unrecognized character '%' -- ignored 
Warning : Scanner at 11(1): Unrecognized character '%' -- ignored 
Warning : Scanner at 12(1): Unrecognized character '%' -- ignored 
Warning : Scanner at 13(1): Unrecognized character '%' -- ignored 
Warning : Scanner at 16(1): Unrecognized character '%' -- ignored 
Warning : Scanner at 16(2): Unrecognized character '{' -- ignored 
Warning : Scanner at 18(1): Unrecognized character '%' -- ignored 
Warning : Scanner at 18(2): Unrecognized character '}' -- ignored 
Warning : Scanner at 20(12): Unrecognized character '=' -- ignored 
Warning : Scanner at 20(16): Unrecognized character '\' -- ignored 

ЦМД ошибка на самом деле больше, но я думаю, вы получите идею.

При попытке сделать http://jflex.de/manual.html#Example в разделе «Простой пример». Я скопирую пасту в примере и появилась следующая ошибка:

Reading "Lexer.flex" 

Error in file "Lexer.flex" (line 87): 
This seems not to be a lexical specification (first %% is missing) 
                 yytext()+">"); } 
1 error, 0 warnings. 
Warning : Scanner at 7(5): Unrecognized character '%' -- ignored 
Warning : Scanner at 7(6): Unrecognized character '%' -- ignored 
Warning : Scanner at 9(5): Unrecognized character '%' -- ignored 
Error: Syntax error @ Symbol: ID (unknown:9/6 - unknown:9/10) 
Warning : Scanner at 10(5): Unrecognized character '%' -- ignored 
Warning : Scanner at 11(5): Unrecognized character '%' -- ignored 

Спасибо!

Answer 1

Решенный! Возникла проблема с файлом jflex.bat. Хороший один, который работает имеет следующую строку:

java -Xmx128m -jar %JFLEX_HOME%\lib\jflex-1.6.1.jar %1 %2 %3 %4 %5 %6 %7 %8 %9 

Я имел орфографическую ошибку в там, это было jflex-1.6.jar