#NEWLINE# def visit_merge( self , merge ) : #NEWLINE# #INDENT# for ( k , ( l , r ) ) in merge . iteritems ( ) : #NEWLINE# #INDENT# new_l = self . visit_expr ( l ) #NEWLINE# new_r = self . visit_expr ( r ) #NEWLINE# self . value_env [ new_r ] = new_l . combine ( new_r )