tools/lexer_generator/automaton.py - Issue 77863004: Experimental parser: small cleanups

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Unified Diff: tools/lexer_generator/automaton.py

Issue 77863004: Experimental parser: small cleanups (Closed) Base URL: https://v8.googlecode.com/svn/branches/experimental/parser

Patch Set: Created 7 years, 1 month ago

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Index: tools/lexer_generator/automaton.py

diff --git a/tools/lexer_generator/automaton.py b/tools/lexer_generator/automaton.py

index e37df525487a49259b9ad5c17b29f50f8d99f6b2..dff7f0c75bfd65ab73b287f573ef0fa4c5792847 100644

--- a/tools/lexer_generator/automaton.py

+++ b/tools/lexer_generator/automaton.py

@@ -154,11 +154,10 @@ class Automaton(object):

def visit_all_states(self, visitor, visit_state = None, state_iter = None):

return self.visit_states(self.start_set(), visitor, visit_state, state_iter)

- # TODO use iters

@staticmethod

def epsilon_closure(states):

- f = lambda acc, node: acc | node.epsilon_closure()

- return reduce(f, states, set(iter(states)))

+ f = lambda state : state.epsilon_closure_iter()

+ return set(chain(iter(states), *map(f, states)))

@staticmethod

def __transition_states_for_char(valid_states, c):

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