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add FilterStack.lexer, fixes andialbrecht/sqlparse#806 #807

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add FilterStack.lexer, fixes andialbrecht/sqlparse#806 #807

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5 changes: 3 additions & 2 deletions sqlparse/engine/filter_stack.py
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Original file line number Diff line number Diff line change
Expand Up @@ -7,7 +7,7 @@

"""filter"""

from sqlparse import lexer
from sqlparse.lexer import Lexer
from sqlparse.engine import grouping
from sqlparse.engine.statement_splitter import StatementSplitter
from sqlparse.exceptions import SQLParseError
Expand All @@ -16,6 +16,7 @@

class FilterStack:
def __init__(self, strip_semicolon=False):
self.lexer = Lexer.get_default_instance()
self.preprocess = []
self.stmtprocess = []
self.postprocess = []
Expand All @@ -28,7 +29,7 @@ def enable_grouping(self):

def run(self, sql, encoding=None):
try:
stream = lexer.tokenize(sql, encoding)
stream = self.lexer.get_tokens(sql, encoding)
# Process token stream
for filter_ in self.preprocess:
stream = filter_.process(stream)
Expand Down