| Current Path : /usr/local/share/python2.5/Tools/bgen/bgen/ |
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| Current File : //usr/local/share/python2.5/Tools/bgen/bgen/bgenStackBuffer.py |
"""Buffers allocated on the stack."""
from bgenBuffer import FixedInputBufferType, FixedOutputBufferType
class StackOutputBufferType(FixedOutputBufferType):
"""Fixed output buffer allocated on the stack -- passed as (buffer, size).
Instantiate with the buffer size as parameter.
"""
def passOutput(self, name):
return "%s__out__, %s" % (name, self.size)
class VarStackOutputBufferType(StackOutputBufferType):
"""Output buffer allocated on the stack -- passed as (buffer, &size).
Instantiate with the buffer size as parameter.
"""
def getSizeDeclarations(self, name):
return []
def getAuxDeclarations(self, name):
return ["int %s__len__ = %s" % (name, self.size)]
def passOutput(self, name):
return "%s__out__, &%s__len__" % (name, name)
def mkvalueArgs(self, name):
return "%s__out__, (int)%s__len__" % (name, name)
class VarVarStackOutputBufferType(VarStackOutputBufferType):
"""Output buffer allocated on the stack -- passed as (buffer, size, &size).
Instantiate with the buffer size as parameter.
"""
def passOutput(self, name):
return "%s__out__, %s__len__, &%s__len__" % (name, name, name)
class ReturnVarStackOutputBufferType(VarStackOutputBufferType):
"""Output buffer allocated on the stack -- passed as (buffer, size) -> size.
Instantiate with the buffer size as parameter.
The function's return value is the size.
(XXX Should have a way to suppress returning it separately, too.)
"""
def passOutput(self, name):
return "%s__out__, %s__len__" % (name, name)
def mkvalueArgs(self, name):
return "%s__out__, (int)_rv" % name