Coverage for /var/srv/projects/api.amasfac.comuna18.com/tmp/venv/lib/python3.9/site-packages/sqlparse/filters/aligned_indent.py: 18%

1# 

2# Copyright (C) 2009-2020 the sqlparse authors and contributors 

3# <see AUTHORS file> 

4# 

5# This module is part of python-sqlparse and is released under 

6# the BSD License: https://opensource.org/licenses/BSD-3-Clause 

7 

8from sqlparse import sql, tokens as T 

9from sqlparse.utils import offset, indent 

10 

11 

12class AlignedIndentFilter: 

13 join_words = (r'((LEFT\s+|RIGHT\s+|FULL\s+)?' 

14 r'(INNER\s+|OUTER\s+|STRAIGHT\s+)?|' 

15 r'(CROSS\s+|NATURAL\s+)?)?JOIN\b') 

16 by_words = r'(GROUP|ORDER)\s+BY\b' 

17 split_words = ('FROM', 

18 join_words, 'ON', by_words, 

19 'WHERE', 'AND', 'OR', 

20 'HAVING', 'LIMIT', 

21 'UNION', 'VALUES', 

22 'SET', 'BETWEEN', 'EXCEPT') 

23 

24 def __init__(self, char=' ', n='\n'): 

25 self.n = n 

26 self.offset = 0 

27 self.indent = 0 

28 self.char = char 

29 self._max_kwd_len = len('select') 

30 

31 def nl(self, offset=1): 

32 # offset = 1 represent a single space after SELECT 

33 offset = -len(offset) if not isinstance(offset, int) else offset 

34 # add two for the space and parenthesis 

35 indent = self.indent * (2 + self._max_kwd_len) 

36 

37 return sql.Token(T.Whitespace, self.n + self.char * ( 

38 self._max_kwd_len + offset + indent + self.offset)) 

39 

40 def _process_statement(self, tlist): 

41 if len(tlist.tokens) > 0 and tlist.tokens[0].is_whitespace \ 

42 and self.indent == 0: 

43 tlist.tokens.pop(0) 

44 

45 # process the main query body 

46 self._process(sql.TokenList(tlist.tokens)) 

47 

48 def _process_parenthesis(self, tlist): 

49 # if this isn't a subquery, don't re-indent 

50 _, token = tlist.token_next_by(m=(T.DML, 'SELECT')) 

51 if token is not None: 

52 with indent(self): 

53 tlist.insert_after(tlist[0], self.nl('SELECT')) 

54 # process the inside of the parenthesis 

55 self._process_default(tlist) 

56 

57 # de-indent last parenthesis 

58 tlist.insert_before(tlist[-1], self.nl()) 

59 

60 def _process_identifierlist(self, tlist): 

61 # columns being selected 

62 identifiers = list(tlist.get_identifiers()) 

63 identifiers.pop(0) 

64 [tlist.insert_before(token, self.nl()) for token in identifiers] 

65 self._process_default(tlist) 

66 

67 def _process_case(self, tlist): 

68 offset_ = len('case ') + len('when ') 

69 cases = tlist.get_cases(skip_ws=True) 

70 # align the end as well 

71 end_token = tlist.token_next_by(m=(T.Keyword, 'END'))[1] 

72 cases.append((None, [end_token])) 

73 

74 condition_width = [len(' '.join(map(str, cond))) if cond else 0 

75 for cond, _ in cases] 

76 max_cond_width = max(condition_width) 

77 

78 for i, (cond, value) in enumerate(cases): 

79 # cond is None when 'else or end' 

80 stmt = cond[0] if cond else value[0] 

81 

82 if i > 0: 

83 tlist.insert_before(stmt, self.nl(offset_ - len(str(stmt)))) 

84 if cond: 

85 ws = sql.Token(T.Whitespace, self.char * ( 

86 max_cond_width - condition_width[i])) 

87 tlist.insert_after(cond[-1], ws) 

88 

89 def _next_token(self, tlist, idx=-1): 

90 split_words = T.Keyword, self.split_words, True 

91 tidx, token = tlist.token_next_by(m=split_words, idx=idx) 

92 # treat "BETWEEN x and y" as a single statement 

93 if token and token.normalized == 'BETWEEN': 

94 tidx, token = self._next_token(tlist, tidx) 

95 if token and token.normalized == 'AND': 

96 tidx, token = self._next_token(tlist, tidx) 

97 return tidx, token 

98 

99 def _split_kwds(self, tlist): 

100 tidx, token = self._next_token(tlist) 

101 while token: 

102 # joins, group/order by are special case. only consider the first 

103 # word as aligner 

104 if ( 

105 token.match(T.Keyword, self.join_words, regex=True) 

106 or token.match(T.Keyword, self.by_words, regex=True) 

107 ): 

108 token_indent = token.value.split()[0] 

109 else: 

110 token_indent = str(token) 

111 tlist.insert_before(token, self.nl(token_indent)) 

112 tidx += 1 

113 tidx, token = self._next_token(tlist, tidx) 

114 

115 def _process_default(self, tlist): 

116 self._split_kwds(tlist) 

117 # process any sub-sub statements 

118 for sgroup in tlist.get_sublists(): 

119 idx = tlist.token_index(sgroup) 

120 pidx, prev_ = tlist.token_prev(idx) 

121 # HACK: make "group/order by" work. Longer than max_len. 

122 offset_ = 3 if ( 

123 prev_ and prev_.match(T.Keyword, self.by_words, regex=True) 

124 ) else 0 

125 with offset(self, offset_): 

126 self._process(sgroup) 

127 

128 def _process(self, tlist): 

129 func_name = '_process_{cls}'.format(cls=type(tlist).__name__) 

130 func = getattr(self, func_name.lower(), self._process_default) 

131 func(tlist) 

132 

133 def process(self, stmt): 

134 self._process(stmt) 

135 return stmt