I've taken input from the first RFD on this topic, and have added some new
features to Marpa. What I propose to do now is to allow you to specify
"if2" in Marpa::R2's import list. That is, you can do
use Marpa::R2 qw(if2);
If you choose to specify interface 2 this way, your defaults will change to
the following:
:default ::= action => [name,values]
lexeme default = latm => 1
Here "name" is a new array descriptor element, whose value for a rule is
the rule's name, if it has one. For an unnamed rule it is the name of the
LHS, and for lexemes and nulled symbols, it is the symbol name.
The "latm" adverb is new, but it's just a synonym for "forgiving". The
"forgiving" adverb is also retained, for backward compatibility. I've
added "latm" because "forgiving" describe the behavior in terms of a now
obsolete implementation. The behavior is Longest Acceptable Tokens
Matching, so it's easiest to call it that.
Rule names can be defined with a new "name" adverb, which can used as
follows:
start ::= number1 number2 name => top
number1 ::= <forty two> name => 'number 1'
number2 ::= <forty three> name => 'number 2'
Please let me know your thoughts,
-- jeffrey
--
You received this message because you are subscribed to the Google Groups
"marpa parser" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
For more options, visit https://groups.google.com/groups/opt_out.
