Current File : //lib/python3/dist-packages/pythran/analyses/inlinable.py
""" Inlinable list function that may be inlined. """
from pythran.passmanager import ModuleAnalysis
from pythran.analyses import Identifiers
from pythran.analyses.pure_expressions import PureExpressions
import pythran.metadata as metadata
import gast as ast
import copy
class Inlinable(ModuleAnalysis):
""" Determine set of inlinable function.
A function can be inlined if it has only one statement and doesn't
recurse on itself.
"""
def __init__(self):
self.result = dict()
super(Inlinable, self).__init__(PureExpressions)
def visit_FunctionDef(self, node):
""" Determine this function definition can be inlined. """
if len(node.body) != 1:
return
sbody = node.body[0]
if not isinstance(sbody, (ast.Call, ast.Return)):
return
# only consider static return if they are pure
if metadata.get(sbody, metadata.StaticReturn):
if sbody not in self.pure_expressions:
return
ids = self.gather(Identifiers, sbody)
# FIXME : It mark "not inlinable" def foo(foo): return foo
if node.name not in ids:
self.result[node.name] = copy.deepcopy(node)
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