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# -*- coding: utf-8 -*-
from sqlparse import sql
from sqlparse import tokens as T
from sqlparse.utils import recurse, imt
M_ROLE = (T.Keyword, ('null', 'role'))
M_SEMICOLON = (T.Punctuation, ';')
M_COMMA = (T.Punctuation, ',')
T_NUMERICAL = (T.Number, T.Number.Integer, T.Number.Float)
T_STRING = (T.String, T.String.Single, T.String.Symbol)
T_NAME = (T.Name, T.Name.Placeholder)
def _group_left_right(tlist, m, cls,
valid_left=lambda t: t is not None,
valid_right=lambda t: t is not None,
semicolon=False):
"""Groups together tokens that are joined by a middle token. ie. x < y"""
[_group_left_right(sgroup, m, cls, valid_left, valid_right, semicolon)
for sgroup in tlist.get_sublists() if not isinstance(sgroup, cls)]
token = tlist.token_next_by(m=m)
while token:
tidx = tlist.token_index(token)
left, right = tlist.token_prev(tidx), tlist.token_next(tidx)
if valid_left(left) and valid_right(right):
if semicolon:
sright = tlist.token_next_by(m=M_SEMICOLON, idx=tidx + 1)
right = sright or right # only overwrite if a semicolon present.
# Luckily, this leaves the position of `token` intact.
token = tlist.group_tokens_between(cls, left, right, extend=True)
token = tlist.token_next_by(m=m, idx=tidx + 1)
def _group_matching(tlist, cls):
"""Groups Tokens that have beginning and end. ie. parenthesis, brackets.."""
idx = 1 if imt(tlist, i=cls) else 0
opens = []
while True:
try:
token = tlist.tokens[idx]
except IndexError:
break
if token.match(*cls.M_OPEN):
opens.append(idx)
elif token.match(*cls.M_CLOSE):
try:
open_idx = opens.pop()
except IndexError:
break
tlist.group_tokens_between(cls, open_idx, idx)
idx = open_idx
idx += 1
def group_if(tlist):
_group_matching(tlist, sql.If)
def group_for(tlist):
_group_matching(tlist, sql.For)
def group_foreach(tlist):
_group_matching(tlist, sql.For)
def group_begin(tlist):
_group_matching(tlist, sql.Begin)
def group_as(tlist):
lfunc = lambda tk: not imt(tk, t=T.Keyword) or tk.value == 'NULL'
rfunc = lambda tk: not imt(tk, t=(T.DML, T.DDL))
_group_left_right(tlist, (T.Keyword, 'AS'), sql.Identifier,
valid_left=lfunc, valid_right=rfunc)
def group_assignment(tlist):
_group_left_right(tlist, (T.Assignment, ':='), sql.Assignment,
semicolon=True)
def group_comparison(tlist):
I_COMPERABLE = (sql.Parenthesis, sql.Function, sql.Identifier)
T_COMPERABLE = T_NUMERICAL + T_STRING + T_NAME
func = lambda tk: imt(tk, t=T_COMPERABLE, i=I_COMPERABLE) or (
imt(tk, t=T.Keyword) and tk.value.upper() == 'NULL')
_group_left_right(tlist, (T.Operator.Comparison, None), sql.Comparison,
valid_left=func, valid_right=func)
def group_case(tlist):
_group_matching(tlist, sql.Case)
@recurse(sql.Identifier)
def group_identifier(tlist):
T_IDENT = (T.String.Symbol, T.Name)
token = tlist.token_next_by(t=T_IDENT)
while token:
tidx = tlist.token_index(token)
token = tlist.group_tokens_between(sql.Identifier, tidx, tidx)
token = tlist.token_next_by(t=T_IDENT, idx=tidx + 1)
def group_period(tlist):
lfunc = lambda tk: imt(tk, i=(sql.SquareBrackets, sql.Identifier),
t=(T.Name, T.String.Symbol,))
rfunc = lambda tk: imt(tk, i=(sql.SquareBrackets, sql.Function),
t=(T.Name, T.String.Symbol, T.Wildcard))
_group_left_right(tlist, (T.Punctuation, '.'), sql.Identifier,
valid_left=lfunc, valid_right=rfunc)
def group_arrays(tlist):
token = tlist.token_next_by(i=sql.SquareBrackets)
while token:
prev = tlist.token_prev(idx=tlist.token_index(token))
if imt(prev, i=(sql.SquareBrackets, sql.Identifier, sql.Function),
t=(T.Name, T.String.Symbol,)):
token = tlist.group_tokens_between(sql.Identifier, prev, token, extend=True)
token = tlist.token_next_by(i=sql.SquareBrackets, idx=tlist.token_index(token) + 1)
@recurse(sql.Identifier)
def group_operator(tlist):
I_CYCLE = (sql.SquareBrackets, sql.Parenthesis, sql.Function,
sql.Identifier,) # sql.Operation)
# wilcards wouldn't have operations next to them
T_CYCLE = T_NUMERICAL + T_STRING + T_NAME # + T.Wildcard
func = lambda tk: imt(tk, i=I_CYCLE, t=T_CYCLE)
token = tlist.token_next_by(t=(T.Operator, T.Wildcard))
while token:
left, right = tlist.token_prev(tlist.token_index(token)), tlist.token_next(tlist.token_index(token))
if func(left) and func(right):
token.ttype = T.Operator
# token = tlist.group_tokens_between(sql.Operation, left, right)
token = tlist.group_tokens_between(sql.Identifier, left, right)
token = tlist.token_next_by(t=(T.Operator, T.Wildcard), idx=tlist.token_index(token) + 1)
@recurse(sql.IdentifierList)
def group_identifier_list(tlist):
I_IDENT_LIST = (sql.Function, sql.Case, sql.Identifier, sql.Comparison,
sql.IdentifierList) # sql.Operation
T_IDENT_LIST = (T_NUMERICAL + T_STRING + T_NAME +
(T.Keyword, T.Comment, T.Wildcard))
func = lambda t: imt(t, i=I_IDENT_LIST, m=M_ROLE, t=T_IDENT_LIST)
tidx, token = tlist.token_idx_next_by(m=M_COMMA)
while token:
before_idx, before = tlist.token_idx_prev(tidx)
after = tlist.token_next(tidx)
if func(before) and func(after):
tidx = before_idx
token = tlist.group_tokens_between(sql.IdentifierList, tidx, after, extend=True)
tidx, token = tlist.token_idx_next_by(m=M_COMMA, idx=tidx + 1)
def group_brackets(tlist):
_group_matching(tlist, sql.SquareBrackets)
def group_parenthesis(tlist):
_group_matching(tlist, sql.Parenthesis)
@recurse(sql.Comment)
def group_comments(tlist):
token = tlist.token_next_by(t=T.Comment)
while token:
end = tlist.token_not_matching(
tlist.token_index(token) + 1, lambda tk: imt(tk, t=T.Comment) or tk.is_whitespace())
if end is not None:
end = tlist.token_prev(tlist.token_index(end), False)
token = tlist.group_tokens_between(sql.Comment, token, end)
token = tlist.token_next_by(t=T.Comment, idx=tlist.token_index(token) + 1)
@recurse(sql.Where)
def group_where(tlist):
token = tlist.token_next_by(m=sql.Where.M_OPEN)
while token:
end = tlist.token_next_by(m=sql.Where.M_CLOSE, idx=tlist.token_index(token) + 1)
if end is None:
end = tlist._groupable_tokens[-1]
else:
end = tlist.tokens[tlist.token_index(end) - 1]
token = tlist.group_tokens_between(sql.Where, token, end)
token = tlist.token_next_by(m=sql.Where.M_OPEN, idx=tlist.token_index(token) + 1)
@recurse()
def group_aliased(tlist):
I_ALIAS = (sql.Parenthesis, sql.Function, sql.Case, sql.Identifier,
) # sql.Operation)
tidx, token = tlist.token_idx_next_by(i=I_ALIAS, t=T.Number)
while token:
next_ = tlist.token_next(tidx)
if imt(next_, i=sql.Identifier):
token = tlist.group_tokens_between(sql.Identifier, tidx, next_, extend=True)
tidx, token = tlist.token_idx_next_by(i=I_ALIAS, t=T.Number, idx=tidx + 1)
def group_typecasts(tlist):
_group_left_right(tlist, (T.Punctuation, '::'), sql.Identifier)
@recurse(sql.Function)
def group_functions(tlist):
has_create = False
has_table = False
for tmp_token in tlist.tokens:
if tmp_token.value == u'CREATE':
has_create = True
if tmp_token.value == u'TABLE':
has_table = True
if has_create and has_table:
return
token = tlist.token_next_by(t=T.Name)
while token:
next_ = tlist.token_next(tlist.token_index(token))
if imt(next_, i=sql.Parenthesis):
token = tlist.group_tokens_between(sql.Function, token, next_)
token = tlist.token_next_by(t=T.Name, idx=tlist.token_index(token) + 1)
def group_order(tlist):
"""Group together Identifier and Asc/Desc token"""
token = tlist.token_next_by(t=T.Keyword.Order)
while token:
prev = tlist.token_prev(tlist.token_index(token))
if imt(prev, i=sql.Identifier, t=T.Number):
token = tlist.group_tokens_between(sql.Identifier, prev, token)
token = tlist.token_next_by(t=T.Keyword.Order, idx=tlist.token_index(token) + 1)
@recurse()
def align_comments(tlist):
token = tlist.token_next_by(i=sql.Comment)
while token:
before = tlist.token_prev(tlist.token_index(token))
if isinstance(before, sql.TokenList):
token = tlist.group_tokens_between(sql.TokenList, before, token, extend=True)
token = tlist.token_next_by(i=sql.Comment, idx=tlist.token_index(token) + 1)
def group(tlist):
for func in [
group_comments,
group_brackets,
group_parenthesis,
group_functions,
group_where,
group_case,
group_period,
group_arrays,
group_identifier,
group_operator,
group_order,
group_typecasts,
group_as,
group_aliased,
group_assignment,
group_comparison,
align_comments,
group_identifier_list,
group_if,
group_for,
group_foreach,
group_begin,
]:
func(tlist)
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