lex and yacclex and yacc are bundled with the HP aC++ product.
The following is a list of HP specific features of lex and
yacc.
For more information on these tools, see the lex and yacc man pages or
the HP-UX Reference. Another general source of information is
lex and yacc by John R. Levine, Tony Mason, and Doug Brown.
LC_CTYPE and LC_MESSAGES environment variable support in lex -
Determines the size of the characters and language in which messages are
displayed while you use lex.
-m command line option for lex - Specifies that multibyte characters
may be used anywhere single byte characters are allowed. You can intermix
both 8-bit and 16-bit multibyte characters in regular expressions if
you enable the -m command line option.
-w command line option for lex - Includes all features in -m and
returns data in the form of the wchar_t data type.
%l <locale> directive for lex - Specifies the locale at
the beginning of the definitions section. Any valid locale recognized
by the setlocale function can be used.
This directive is similar to using the LC_CTYPE environment variable.
To receive wchar_t support with %l, use the -w command line option.
LC_CTYPE environment variable support in yacc - Determines the native
language set used by yacc and enables multibyte character sets.
Multibyte characters can appear in token names, on terminal symbols,
strings, comments, or anywhere ASCII characters can appear, except as
separators or special characters.
lex and yacc
When using lex and yacc, please note the following:
yacc or lex can have many unreachable
break statements, causing multiple aC++ warnings.