1 /* PSPP - a program for statistical analysis.
2 Copyright (C) 2008, 2009 Free Software Foundation, Inc.
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation, either version 3 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>. */
17 #ifndef DATA_SUBCASE_H
18 #define DATA_SUBCASE_H 1
28 enum subcase_direction
30 SC_ASCEND, /* A, B, C, ..., X, Y, Z. */
31 SC_DESCEND /* Z, Y, X, ..., C, B, A. */
34 /* A value within a case. */
37 size_t case_index; /* Starting position in the case. */
38 int width; /* 0=numeric, otherwise string width. */
39 enum subcase_direction direction; /* Sort order. */
42 /* A subcase specifies how to draw values from a case. */
45 struct subcase_field *fields;
48 struct caseproto *proto; /* Created lazily. */
51 void subcase_init_empty (struct subcase *);
52 void subcase_init_vars (struct subcase *,
53 const struct variable *const *, size_t n_vars);
54 void subcase_init_var (struct subcase *,
55 const struct variable *, enum subcase_direction);
56 void subcase_init (struct subcase *, int index, int width,
57 enum subcase_direction);
59 void subcase_clone (struct subcase *, const struct subcase *);
60 void subcase_clear (struct subcase *);
61 void subcase_destroy (struct subcase *);
63 bool subcase_contains (const struct subcase *, int case_index);
64 bool subcase_contains_var (const struct subcase *, const struct variable *);
66 bool subcase_add (struct subcase *, int case_index, int width,
67 enum subcase_direction direction);
68 bool subcase_add_var (struct subcase *, const struct variable *,
69 enum subcase_direction);
71 void subcase_add_always (struct subcase *sc, int case_index, int width,
72 enum subcase_direction direction);
73 void subcase_add_var_always (struct subcase *, const struct variable *,
74 enum subcase_direction);
75 void subcase_add_vars_always (struct subcase *,
76 const struct variable *const *, size_t n_vars);
77 void subcase_add_proto_always (struct subcase *, const struct caseproto *);
79 const struct caseproto *subcase_get_proto (const struct subcase *);
81 static inline bool subcase_is_empty (const struct subcase *);
82 static inline size_t subcase_get_n_fields (const struct subcase *);
84 static inline size_t subcase_get_case_index (const struct subcase *,
86 static inline enum subcase_direction subcase_get_direction (
87 const struct subcase *, size_t idx);
89 bool subcase_conformable (const struct subcase *, const struct subcase *);
91 void subcase_extract (const struct subcase *, const struct ccase *,
93 void subcase_inject (const struct subcase *,
94 const union value *values, struct ccase *);
95 void subcase_copy (const struct subcase *src_sc, const struct ccase *src,
96 const struct subcase *dst_sc, struct ccase *dst);
98 int subcase_compare_3way (const struct subcase *a_sc, const struct ccase *a,
99 const struct subcase *b_sc, const struct ccase *b);
100 int subcase_compare_3way_xc (const struct subcase *,
101 const union value *a, const struct ccase *b);
102 int subcase_compare_3way_cx (const struct subcase *,
103 const struct ccase *a, const union value *b);
104 int subcase_compare_3way_xx (const struct subcase *,
105 const union value *a, const union value *b);
106 bool subcase_equal (const struct subcase *a_sc, const struct ccase *a,
107 const struct subcase *b_sc, const struct ccase *b);
108 bool subcase_equal_xc (const struct subcase *,
109 const union value *a, const struct ccase *b);
110 bool subcase_equal_cx (const struct subcase *,
111 const struct ccase *a, const union value *b);
112 bool subcase_equal_xx (const struct subcase *,
113 const union value *a, const union value *b);
116 subcase_get_case_index (const struct subcase *sc, size_t idx)
118 return sc->fields[idx].case_index;
121 static inline enum subcase_direction
122 subcase_get_direction (const struct subcase *sc, size_t idx)
124 return sc->fields[idx].direction;
128 subcase_is_empty (const struct subcase *sc)
130 return sc->n_fields == 0;
134 subcase_get_n_fields (const struct subcase *sc)
139 #endif /* data/subcase.h */