aboutsummaryrefslogtreecommitdiffstats
path: root/activerecord/lib/arel/predications.rb
blob: dece4786156d8ffd963a7a5439e88622e571cc29 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
# frozen_string_literal: true

module Arel # :nodoc: all
  module Predications
    def not_eq(other)
      Nodes::NotEqual.new self, quoted_node(other)
    end

    def not_eq_any(others)
      grouping_any :not_eq, others
    end

    def not_eq_all(others)
      grouping_all :not_eq, others
    end

    def eq(other)
      Nodes::Equality.new self, quoted_node(other)
    end

    def is_not_distinct_from(other)
      Nodes::IsNotDistinctFrom.new self, quoted_node(other)
    end

    def is_distinct_from(other)
      Nodes::IsDistinctFrom.new self, quoted_node(other)
    end

    def eq_any(others)
      grouping_any :eq, others
    end

    def eq_all(others)
      grouping_all :eq, quoted_array(others)
    end

    def between(other)
      if unboundable?(other.begin) == 1 || unboundable?(other.end) == -1
        self.in([])
      elsif open_ended?(other.begin)
        if other.end.nil? || open_ended?(other.end)
          not_in([])
        elsif other.exclude_end?
          lt(other.end)
        else
          lteq(other.end)
        end
      elsif other.end.nil? || open_ended?(other.end)
        gteq(other.begin)
      elsif other.exclude_end?
        gteq(other.begin).and(lt(other.end))
      else
        left = quoted_node(other.begin)
        right = quoted_node(other.end)
        Nodes::Between.new(self, left.and(right))
      end
    end

    def in(other)
      case other
      when Arel::SelectManager
        Arel::Nodes::In.new(self, other.ast)
      when Range
        if $VERBOSE
          warn <<-eowarn
Passing a range to `#in` is deprecated. Call `#between`, instead.
          eowarn
        end
        between(other)
      when Enumerable
        Nodes::In.new self, quoted_array(other)
      else
        Nodes::In.new self, quoted_node(other)
      end
    end

    def in_any(others)
      grouping_any :in, others
    end

    def in_all(others)
      grouping_all :in, others
    end

    def not_between(other)
      if unboundable?(other.begin) == 1 || unboundable?(other.end) == -1
        not_in([])
      elsif open_ended?(other.begin)
        if other.end.nil? || open_ended?(other.end)
          self.in([])
        elsif other.exclude_end?
          gteq(other.end)
        else
          gt(other.end)
        end
      elsif other.end.nil? || open_ended?(other.end)
        lt(other.begin)
      else
        left = lt(other.begin)
        right = if other.exclude_end?
          gteq(other.end)
        else
          gt(other.end)
        end
        left.or(right)
      end
    end

    def not_in(other)
      case other
      when Arel::SelectManager
        Arel::Nodes::NotIn.new(self, other.ast)
      when Range
        if $VERBOSE
          warn <<-eowarn
Passing a range to `#not_in` is deprecated. Call `#not_between`, instead.
          eowarn
        end
        not_between(other)
      when Enumerable
        Nodes::NotIn.new self, quoted_array(other)
      else
        Nodes::NotIn.new self, quoted_node(other)
      end
    end

    def not_in_any(others)
      grouping_any :not_in, others
    end

    def not_in_all(others)
      grouping_all :not_in, others
    end

    def matches(other, escape = nil, case_sensitive = false)
      Nodes::Matches.new self, quoted_node(other), escape, case_sensitive
    end

    def matches_regexp(other, case_sensitive = true)
      Nodes::Regexp.new self, quoted_node(other), case_sensitive
    end

    def matches_any(others, escape = nil, case_sensitive = false)
      grouping_any :matches, others, escape, case_sensitive
    end

    def matches_all(others, escape = nil, case_sensitive = false)
      grouping_all :matches, others, escape, case_sensitive
    end

    def does_not_match(other, escape = nil, case_sensitive = false)
      Nodes::DoesNotMatch.new self, quoted_node(other), escape, case_sensitive
    end

    def does_not_match_regexp(other, case_sensitive = true)
      Nodes::NotRegexp.new self, quoted_node(other), case_sensitive
    end

    def does_not_match_any(others, escape = nil)
      grouping_any :does_not_match, others, escape
    end

    def does_not_match_all(others, escape = nil)
      grouping_all :does_not_match, others, escape
    end

    def gteq(right)
      Nodes::GreaterThanOrEqual.new self, quoted_node(right)
    end

    def gteq_any(others)
      grouping_any :gteq, others
    end

    def gteq_all(others)
      grouping_all :gteq, others
    end

    def gt(right)
      Nodes::GreaterThan.new self, quoted_node(right)
    end

    def gt_any(others)
      grouping_any :gt, others
    end

    def gt_all(others)
      grouping_all :gt, others
    end

    def lt(right)
      Nodes::LessThan.new self, quoted_node(right)
    end

    def lt_any(others)
      grouping_any :lt, others
    end

    def lt_all(others)
      grouping_all :lt, others
    end

    def lteq(right)
      Nodes::LessThanOrEqual.new self, quoted_node(right)
    end

    def lteq_any(others)
      grouping_any :lteq, others
    end

    def lteq_all(others)
      grouping_all :lteq, others
    end

    def when(right)
      Nodes::Case.new(self).when quoted_node(right)
    end

    def concat(other)
      Nodes::Concat.new self, other
    end

    private
      def grouping_any(method_id, others, *extras)
        nodes = others.map { |expr| send(method_id, expr, *extras) }
        Nodes::Grouping.new nodes.inject { |memo, node|
          Nodes::Or.new(memo, node)
        }
      end

      def grouping_all(method_id, others, *extras)
        nodes = others.map { |expr| send(method_id, expr, *extras) }
        Nodes::Grouping.new Nodes::And.new(nodes)
      end

      def quoted_node(other)
        Nodes.build_quoted(other, self)
      end

      def quoted_array(others)
        others.map { |v| quoted_node(v) }
      end

      def infinity?(value)
        value.respond_to?(:infinite?) && value.infinite?
      end

      def unboundable?(value)
        value.respond_to?(:unboundable?) && value.unboundable?
      end

      def open_ended?(value)
        infinity?(value) || unboundable?(value)
      end
  end
end