tools/lexer_generator/dot_utilities.py - Issue 171713005: Experimental parser: add backtracking

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Unified Diff: tools/lexer_generator/dot_utilities.py

Issue 171713005: Experimental parser: add backtracking (Closed) Base URL: https://v8.googlecode.com/svn/branches/experimental/parser

Patch Set: Created 6 years, 10 months ago

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Index: tools/lexer_generator/dot_utilities.py

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

index bce225b06abba12c0137d8b64b803f8ce31529e1..007c074c5b9a1131952055210f5e33c72399306a 100644

--- a/tools/lexer_generator/dot_utilities.py

+++ b/tools/lexer_generator/dot_utilities.py

@@ -73,7 +73,7 @@ def term_to_dot(term, term_mapper = None):

def automaton_to_dot(automaton, merge = False):

terminal_set = automaton.terminal_set()

- to_skip = set([])

+ to_skip = set()

# get a replacement action for a state's omega transition

def analyse_omega_chain(state):

omega_chain = list(state.omega_chain_iter())

@@ -100,8 +100,8 @@ def automaton_to_dot(automaton, merge = False):

Term('goto', omega_chain[1][0].node_number())), 0)

return Action.empty_action()

# draw state

- skipped = set([])

- drawn = set([])

+ skipped = set()

+ drawn = set()

def draw(node, (node_content, edge_content)):

if node in to_skip: # skip match nodes

skipped.add(node)

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