pdfviewer: explicitely use set, instead of dictionary, fails to compile in some versions of python.

experimental/PdfViewer/spec2def.py

 #!/usr/local/bin/python
 # coding: utf-8
 
 import sys
 import re
+from sets import Set
 
 # TODO(edisonn): put processed part of file in a new file
 # put unprocessed part, in a new file, so we see what we miss
 # keep blank lines, and generate a version without the blank lines
 
 #TODO (edisonn): deal manually with tables that don't have "KEY TYPE VALUE' header, e.g. 
 #         TABLE 7.11 Restrictions on the entries in a soft-mask image dictionary
 #KEY                       RESTRICTION
 
 
  
 lines = 0
 table = ''
 tableHeaderFound = False
 tableLine = 0
 tableRow = 0
 columnWidth = []
 columnValues = None
 mustFollowTableHeader = False
 emitedDitionaryName = ''
 
-knownTypes = {
+knownTypes = Set([
 '(any)',
 unicode('undefined', 'utf8'),
 '(undefined)',
 '(various)',
 'array',
 'or',
 'boolean',
 'date',
 'dictionary',
 'function',
 'integer',
 unicode('file', 'utf8'),
 'file',
 unicode('specification', 'utf8'),
 'specification',
 'name',
 'tree',
 'number',
 'rectangle',
 'stream',
 'string',
 'text',
 ',',
 ' '
-}
+])
 
 # TODO(edisonn): add a third element in the vector, the base class, by default it is Dictionary
 # TODO(edisonn): add overrides for types map<field_name, type_name>
 # e.g. ,{'Resources', 'ResourceDictionary'}
 # TODO(edisonn): can be added one by one, or extracted from documentation
 
 tableToClassName = {
 'TABLE 3.4': ['StreamCommonDictionary', 'Entries common to all stream dictionaries'],
 'TABLE 3.7': ['LzwdecodeAndFlatedecodeFiltersDictionary', 'Optional parameters for LZWDecode and FlateDecode filters'],
 'TABLE 3.9': ['CcittfaxdecodeFilterDictionary', 'Optional parameters for the CCITTFaxDecode filter'],
@@ skipping 567 matching lines @@
     #TODO(edisonn): build this map
     
     fspecPy.write('  knowTypes[\'' + tableToClassName[e][0] + '\'] = [\'SkPdf' + tableToClassName[e][0] + '*\', \'(SkPdf' + tableToClassName[e][0] + '*)ret\', datatypes.CppNull(), \'ret->isDictionary() && ((SkPdf' + tableToClassName[e][0] + '*)ret)->valid()\', \'A_DICTIONARY\']\n')
   fspecPy.write('\n')
   
   #print lines
   #fnewspec.close()
 
 if '__main__' == __name__:
   sys.exit(generateDef())