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Optimize llDeleteSubList(expr, 0, -1) to [] if expr is SEF

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It also applies to llListReplaceList with [] as replacement.
This commit is contained in:
Sei Lisa 2017-09-15 23:13:59 +02:00
parent a6a08fe3f3
commit 0a7e2a9e1d
1 changed files with 13 additions and 0 deletions
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13
lslopt/lslfuncopt.py
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@ -308,6 +308,19 @@ def OptimizeFunc(self, parent, index):
child[2] = {'nt':'CONST','t':'list','value':[],'SEF':True} child[2] = {'nt':'CONST','t':'list','value':[],'SEF':True}
return return
if (name == 'llDeleteSubList'
or name == 'llListReplaceList' and child[1]['nt'] == 'CONST'
and not child[1]['value']
):
# llDeleteSubList(x, 0, -1) -> [] if x is SEF
# llListReplaceList(x, [], 0, -1) -> [] if x is SEF
if ('SEF' in child[0]
and child[-2]['nt'] == 'CONST' and child[-1]['nt'] == 'CONST'
and child[-2]['value'] == 0 and child[-1]['value'] == -1
):
parent[index] = {'nt':'CONST','SEF':True,'t':'list','value':[]}
return
def FuncOptSetup(): def FuncOptSetup():
# Patch the default values list for LSO # Patch the default values list for LSO
if lslcommon.LSO: if lslcommon.LSO: