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Mini Shell
Mini Shell
""" UsedDefChain build used-define chains analysis for each variable. """
from pythran.passmanager import ModuleAnalysis
import pythran.metadata as md
import beniget
class ExtendedDefUseChains(beniget.DefUseChains):
def unbound_identifier(self, name, node):
# don't warn on unbound identifier
pass
def visit(self, node):
# be aware of metadata
md.visit(self, node)
return super(ExtendedDefUseChains, self).visit(node)
class UseDefChains(ModuleAnalysis):
"""
Build use-define chains analysis for each variable.
"""
def __init__(self):
self.result = None
super(UseDefChains, self).__init__(DefUseChains)
def visit_Module(self, node):
udc = beniget.UseDefChains(self.def_use_chains)
self.result = udc.chains
class DefUseChains(ModuleAnalysis):
"""
Build define-use-define chains analysis for each variable.
"""
def __init__(self):
self.result = None
super(DefUseChains, self).__init__()
def visit_Module(self, node):
duc = ExtendedDefUseChains()
duc.visit(node)
self.result = duc
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