Current File : //lib/python3/dist-packages/pythran/analyses/literals.py
"""
Literals lists nodes that are only literals
"""
from pythran.passmanager import FunctionAnalysis
import gast as ast
class Literals(FunctionAnalysis):
"""
Store variable that save only Literals (with no construction cost)
"""
def __init__(self):
self.result = set()
super(Literals, self).__init__()
def visit_Assign(self, node):
# list, dict, set and other are not considered as Literals as they have
# a constructor which may be costly and they can be updated using
# function call
if isinstance(node.value, (ast.Constant, ast.Lambda)):
targets = [target for target in node.targets
if isinstance(target, ast.Name)]
self.result.update(targets)
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