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Implement library function parameter optimization.

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So far only two kinds: angle in llSensor[Repeat] and null keys in functions that take a key parameter.

Closes two TODOs.
This commit is contained in:
Sei Lisa 2015-04-21 04:56:09 +02:00
parent 595286f22a
commit d58bc2d350
3 changed files with 50 additions and 4 deletions
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9
lslopt/lslfoldconst.py
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@ -20,6 +20,7 @@
import lslfuncs
import math
from lslparse import warning
from lslfuncparams import OptimizeParams
class foldconst(object):
@ -179,6 +180,9 @@ class foldconst(object):
if (Invertible[0] or Invertible[1]) and ParentIsNegation:
# !(!a|b) -> a&-!b or a&!b
# This deals with the part after the first !, transforming
# it into (!a|!!b) so that the outer node can optimize the
# negated version to a simple &.
for a in (0, 1):
if not Invertible[a]:
child[a] = {'nt':'!', 't':'integer',
@ -344,7 +348,7 @@ class foldconst(object):
if nt == '!':
self.FoldTree(child, 0)
self.FoldCond(child, 0, True)
# !! does *not* cancel out (unless in cond), but !!! can be simplified to !
# !! does *not* cancel out (unless in cond)
subexpr = child[0]
snt = subexpr['nt']
if 'SEF' in subexpr:
@ -926,8 +930,7 @@ class foldconst(object):
if child[idx]['nt'] != 'CONST':
CONSTargs = False
# TODO: Find some way to convert keys to "" e.g. llListen("", NULL_KEY, "")
# TODO: Find some way to convert PI to 4 in llSensor[Repeat]
OptimizeParams(node, self.symtab[0][node['name']])
if 'Fn' in self.symtab[0][node['name']]:
# Guaranteed to be side-effect free if the children are.
if SEFargs: