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- Fix a bunch of bugs found during the debut of the LSL calculator.
- Add infrastructure for functions to be able to produce a result or not depending on arguments. Fixes the llBase64ToInteger/llXorBase64/llXorBase64StringsCorrect cases where they are not deterministic, and allows for the addition of some extra functions whose value can be determined in some cases (e.g. llDetectedType(-1) is always 0). Added several such functions in a new module.
- Add the constant folding option to the help and the default options.
This commit is contained in:
Sei Lisa 2015-02-11 05:43:13 +01:00
parent 716be215f2
commit db862bb4a6
6 changed files with 175 additions and 28 deletions
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36
lslopt/lslfoldconst.py
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@ -195,9 +195,15 @@ class foldconst(object):
elif nt == '*':
result = lslfuncs.mul(op1, op2)
elif nt == '/':
result = lslfuncs.div(op1, op2)
try:
result = lslfuncs.div(op1, op2)
except lslfuncs.ELSLMathError:
return
elif nt == '%':
result = lslfuncs.mod(op1, op2)
try:
result = lslfuncs.mod(op1, op2)
except lslfuncs.ELSLMathError:
return
elif nt == '<<':
result = lslfuncs.S32(op1 << (op2 & 31))
elif nt == '>>':
@ -559,11 +565,19 @@ class foldconst(object):
if CONSTargs:
# Call it
fn = self.symtab[0][node['name']]['Fn']
value = fn(*tuple(arg['value'] for arg in child))
if not self.foldtabs and isinstance(value, unicode) and '\t' in value:
warning('Tab in function result and foldtabs option not used.')
return
parent[index] = {'nt':'CONST', 't':node['t'], 'value':value}
try:
if node['name'][:10] == 'llDetected':
value = fn(*tuple(arg['value'] for arg in child),
event=self.CurEvent)
else:
value = fn(*tuple(arg['value'] for arg in child))
if not self.foldtabs and isinstance(value, unicode) and '\t' in value:
warning('Tab in function result and foldtabs option not used.')
return
parent[index] = {'nt':'CONST', 't':node['t'], 'value':value}
except lslfuncs.ELSLCantCompute:
# Don't transform the tree if function is not computable
pass
elif node['name'] == 'llGetListLength' and child[0]['nt'] == 'IDENT':
# Convert llGetListLength(ident) to (ident != [])
node = {'nt':'CONST', 't':'list', 'value':[]}
@ -588,6 +602,13 @@ class foldconst(object):
return
if nt == 'FNDEF':
# used when folding llDetected* function calls
if 'scope' in node:
# function definition
self.CurEvent = None
else:
# event definition
self.CurEvent = node['name']
self.FoldTree(child, 0)
if 'SEF' in child[0]:
node['SEF'] = True
@ -829,6 +850,7 @@ class foldconst(object):
self.globalmode = False
tree = self.tree
self.CurEvent = None
# Constant folding pass. It does some other optimizations along the way.
for idx in xrange(len(tree)):