tools/lexer_generator/action.py - Issue 153993014: Experimental parser: cleanup dfa.py

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Side by Side Diff: tools/lexer_generator/action.py

Issue 153993014: Experimental parser: cleanup dfa.py (Closed) Base URL: https://v8.googlecode.com/svn/branches/experimental/parser

Patch Set: Created 6 years, 10 months ago

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1 # Copyright 2014 the V8 project authors. All rights reserved.	1 # Copyright 2014 the V8 project authors. All rights reserved.

2 # Redistribution and use in source and binary forms, with or without	2 # Redistribution and use in source and binary forms, with or without

3 # modification, are permitted provided that the following conditions are	3 # modification, are permitted provided that the following conditions are

4 # met:	4 # met:

5 #	5 #

6 # * Redistributions of source code must retain the above copyright	6 # * Redistributions of source code must retain the above copyright

7 # notice, this list of conditions and the following disclaimer.	7 # notice, this list of conditions and the following disclaimer.

8 # * Redistributions in binary form must reproduce the above	8 # * Redistributions in binary form must reproduce the above

9 # copyright notice, this list of conditions and the following	9 # copyright notice, this list of conditions and the following

10 # disclaimer in the documentation and/or other materials provided	10 # disclaimer in the documentation and/or other materials provided

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160	160

161 def __hash__(self):	161 def __hash__(self):

162 return hash((self.__entry_action, self.__match_action))	162 return hash((self.__entry_action, self.__match_action))

163	163

164 def __eq__(self, other):	164 def __eq__(self, other):

165 return (isinstance(other, self.__class__) and	165 return (isinstance(other, self.__class__) and

166 self.__entry_action == other.__entry_action and	166 self.__entry_action == other.__entry_action and

167 self.__match_action == other.__match_action)	167 self.__match_action == other.__match_action)

168	168

169 def __str__(self):	169 def __str__(self):

170 parts = []	170 parts = map(lambda action : '' if not action else str(action),

171 for action in [self.__entry_action, self.__match_action]:	171 [self.__entry_action, self.__match_action])

172 parts.append('' if not action else str(action))

173 return "action< %s >" % " \| ".join(parts)	172 return "action< %s >" % " \| ".join(parts)

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