def _transform(self, node):
laststr = []
tr = Transformer(node)
for i, cur in tr:
if isinstance(cur, Output) and cur.expr.simple():
tr.replace()
laststr.append(chr(int(cur.expr) & 0xFF))
elif isinstance(cur, OutputConst):
tr.replace()
laststr.append(cur.str)
elif not cur.pure(): # I/O cannot be reordered!
if laststr:
tr.prepend(OutputConst("".join(laststr)))
laststr = []
if laststr:
node.append(OutputConst("".join(laststr)))
return node
def _transform(self, node):
laststr = []
tr = Transformer(node)
for i, cur in tr:
if isinstance(cur, Output) and cur.expr.simple():
tr.replace()
laststr.append(chr(int(cur.expr) & 0xff))
elif isinstance(cur, OutputConst):
tr.replace()
laststr.append(cur.str)
elif not cur.pure(): # I/O cannot be reordered!
if laststr:
tr.prepend(OutputConst(''.join(laststr)))
laststr = []
if laststr:
node.append(OutputConst(''.join(laststr)))
return node
def transform(self, node):
if not isinstance(node, Program):
return node
offsets = 0
changed = set([None]) # for getting rid of None
tr = Transformer(node)
for i, cur in tr:
refs = cur.prereferences().movepointer(offsets)
updates = cur.preupdates().movepointer(offsets)
zerorefs = set(refs.unsure) - changed
if zerorefs:
tr.prepend(*[SetMemory(j - offsets, 0) for j in zerorefs])
changed.update(zerorefs)
changed.update(updates.unsure)
ioffsets = cur.offsets()
if ioffsets is None: break
offsets += ioffsets
return node
def transform(self, node):
if not isinstance(node, Program):
return node
offsets = 0
changed = set([None]) # for getting rid of None
tr = Transformer(node)
for i, cur in tr:
refs = cur.prereferences().movepointer(offsets)
updates = cur.preupdates().movepointer(offsets)
zerorefs = set(refs.unsure) - changed
if zerorefs:
tr.prepend(*[SetMemory(j - offsets, 0) for j in zerorefs])
changed.update(zerorefs)
changed.update(updates.unsure)
ioffsets = cur.offsets()
if ioffsets is None: break
offsets += ioffsets
return node
