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I'm using jflex and i have to recognize characters, which can be:

  • Normal chars, like 'a'
  • Numbers, like '\126'

I've made this regular expression (Integer is a macro already defined): 

Character = (\'.\')|(\'\\{Integer}\')

I don't know if it's ok, but my real problem is that i don't know what code i have to put to turn both type of strings into Characters, because this doesn't work:

{Character} { this.yylval = new Character(yytext());
              return Parser.CHARACTER; }

Any idea?

novayhulk14
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1 Answers1

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You have to write valid Java: the only constructor for Character is Character(char) but you are invoking Character(String).

You need to extract what you want from yytext().

rds
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