I have the feeling it improved greatly the memory consumption (on my linux it took previously ~10 GB of memory, to parse a 10 MB json file and I experienced some swapping hell with bigger files) but i still experience some crash on malformed json, if you put just a coma at the end of a correct value.

What perl version?

Mind your warnings? will not stay shared ... local our $i

Use more subroutines? ex 


        (?{ my $v = eval $^N;
            say $i x $l,"->have number $v" if TRACE_JSON; 
            push_val($v); })
      )

[download]
(?{ push_number( $^N, $depth ); })
sub push_number {
...
TRACE( $depth, $msg );

[download]
... </c>

Use more "Possessive quantifiers"? For example 

          (?>(?&STRING)) # ratchet
          \s*+ # ratchet
            [^\\"]++ # ratchet
          )*+ # ratchet
          (?: 0 | [1-9]\d*+ # ratchet

[download]

In reply to Re^3: strange behavior of JSON parsing guru regex by Anonymous Monk
in thread strange behavior of JSON parsing guru regex by seki

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