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https://github.com/Sei-Lisa/LSL-PyOptimizer
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Implement library function parameter optimization.
So far only two kinds: angle in llSensor[Repeat] and null keys in functions that take a key parameter. Closes two TODOs.
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3 changed files with 50 additions and 4 deletions
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@ -20,6 +20,7 @@
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import lslfuncs
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import math
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from lslparse import warning
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from lslfuncparams import OptimizeParams
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class foldconst(object):
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@ -179,6 +180,9 @@ class foldconst(object):
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if (Invertible[0] or Invertible[1]) and ParentIsNegation:
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# !(!a|b) -> a&-!b or a&!b
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# This deals with the part after the first !, transforming
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# it into (!a|!!b) so that the outer node can optimize the
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# negated version to a simple &.
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for a in (0, 1):
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if not Invertible[a]:
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child[a] = {'nt':'!', 't':'integer',
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@ -344,7 +348,7 @@ class foldconst(object):
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if nt == '!':
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self.FoldTree(child, 0)
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self.FoldCond(child, 0, True)
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# !! does *not* cancel out (unless in cond), but !!! can be simplified to !
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# !! does *not* cancel out (unless in cond)
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subexpr = child[0]
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snt = subexpr['nt']
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if 'SEF' in subexpr:
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@ -926,8 +930,7 @@ class foldconst(object):
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if child[idx]['nt'] != 'CONST':
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CONSTargs = False
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# TODO: Find some way to convert keys to "" e.g. llListen("", NULL_KEY, "")
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# TODO: Find some way to convert PI to 4 in llSensor[Repeat]
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OptimizeParams(node, self.symtab[0][node['name']])
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if 'Fn' in self.symtab[0][node['name']]:
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# Guaranteed to be side-effect free if the children are.
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if SEFargs:
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43
lslopt/lslfuncparams.py
Normal file
43
lslopt/lslfuncparams.py
Normal file
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@ -0,0 +1,43 @@
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# (C) Copyright 2015 Sei Lisa. All rights reserved.
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#
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# This file is part of LSL PyOptimizer.
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#
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# LSL PyOptimizer is free software: you can redistribute it and/or
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# modify it under the terms of the GNU General Public License as
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# published by the Free Software Foundation, either version 3 of the
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# License, or (at your option) any later version.
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#
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# LSL PyOptimizer is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with LSL PyOptimizer. If not, see <http://www.gnu.org/licenses/>.
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# Transform function parameters to shorter equivalents where possible.
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# This is dependent on the LSL function library.
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from lslcommon import Key#, Vector, Quaternion
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import lslfuncs
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def OptimizeParams(node, sym):
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assert node['nt'] == 'FNCALL'
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params = node['ch']
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name = node['name']
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if name in ('llSensor', 'llSensorRepeat'):
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# The cutoff value is at a bit less than 3.1275 for some reason,
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# but we use 3.14159.
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if params[4]['nt'] == 'CONST' and params[4]['t'] == 'float' and params[4]['value'] > 3.14159:
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params[4]['value'] = 4.0
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types = sym['ParamTypes']
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if name != 'llMessageLinked':
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# Transform invalid/null keys to "" e.g. llGetOwnerKey(NULL_KEY) -> llGetOwnerKey("")
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# llMessageLinked is the exception.
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for i in range(len(types)):
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if types[i] == 'key':
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if params[i]['nt'] == 'CONST':
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if not lslfuncs.cond(Key(params[i]['value'])):
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params[i]['value'] = u""
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@ -18,7 +18,7 @@
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# Optimizer class that wraps and calls the other parts.
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import lslfuncs
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from lslfuncs import Key, Vector, Quaternion
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from lslcommon import Key, Vector, Quaternion
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from lslfoldconst import foldconst
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from lslrenamer import renamer
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