[SR-Dev] git:andrei/script_vars: script engine: more rvalue optimizations

[Andrei Pelinescu-Onciul]

Module: sip-router
Branch: andrei/script_vars
Commit: 0b3512af8f5c42bea2e17de6efce9571e85241f8
URL:    http://git.sip-router.org/cgi-bin/gitweb.cgi/sip-router/?a=commit;h=0b3512af8f5c42bea2e17de6efce9571e85241f8

Author: Andrei Pelinescu-Onciul <andrei at iptel.org>
Committer: Andrei Pelinescu-Onciul <andrei at iptel.org>
Date:   Thu Dec 11 19:30:41 2008 +0100

script engine: more rvalue optimizations

- optimize:
    ($v * a) * b  -> $v * (a * b) if '*' is associative
    (a * $v) * b  -> (a * b) * $v if '*' is assoc. and commutative
    a * ($v * b)  -> (a * b) * $v if '*' is assoc. and commutative
    a * (b * $v)  -> (a * b) * $v if '*' is associative
  where a & b are constants, $v is a var (pvar or avp) and '*' is
  the operator.

- special hacks for optimizing '+' ('+' is a special case because
  in the current form it can work both with strings and ints which
  combined with the dynamic typed vars make it very hard to
  optimize)

---

 rvalue.c |  400 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++------
 1 files changed, 366 insertions(+), 34 deletions(-)

Diff:   http://git.sip-router.org/cgi-bin/gitweb.cgi/sip-router/?a=commitdiff;h=0b3512af8f5c42bea2e17de6efce9571e85241f8