[antlr-interest] Character literals in ANTLR 3?
jaluber at gmx.de
Mon Aug 27 03:04:41 PDT 2007
Mitsu Hadeishi wrote:
> I hope this is the right list to post this question. I've just been
> attempting to convert a grammar from ANTLR 2 to ANTLR 3 --- I am an
> ANTLR newbie, however, so forgive me if this is a stupid question ---
> but I am trying to convert the following from a lexer rule:
> ANTLR 3 doesn't recognize that syntax for string literals. I searched
> the wiki and the ANTLR 3 documentation page and did not see any mention
> of the exact definition of the escape sequences that ANTLR 3 recognizes
> (for octal character constants in particular). What is the ANTLR 3
> equivalent of the above?
I don't believe that I have seen the octal notation in the TDAR, but you
can use the Unicode notation instead: '\u007f'..'\u00FF'.
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