tools/lexer_generator/nfa.py - Issue 152823002: Experimental parser: use sentinal values for actions

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Unified Diff: tools/lexer_generator/nfa.py

Issue 152823002: Experimental parser: use sentinal values for actions (Closed) Base URL: https://v8.googlecode.com/svn/branches/experimental/parser

Patch Set: Created 6 years, 11 months ago

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Index: tools/lexer_generator/nfa.py

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

index fd791864b8a379d6074a70b8663d65343fce550b..2367630b76b711cea0725b5df5e1083e276f3ca8 100644

--- a/tools/lexer_generator/nfa.py

+++ b/tools/lexer_generator/nfa.py

@@ -35,7 +35,7 @@ class NfaState(AutomatonState):

self.__transitions = {}

self.__unclosed = set()

self.__epsilon_closure = None

- self.__action = None

+ self.__action = Action.empty_action()

def transitions_to_multiple_states(self):

return True

@@ -55,6 +55,7 @@ class NfaState(AutomatonState):

def set_action(self, action):

assert not self.is_closed()

assert not self.__action

+ assert isinstance(action, Action)

self.__action = action

def transitions(self):

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