1 /* PSPP - a program for statistical analysis.
2 Copyright (C) 1997-9, 2000, 2006, 2007, 2010 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 VARIABLE_PARSER_H
18 #define VARIABLE_PARSER_H 1
30 struct var_set *var_set_create_from_dict (const struct dictionary *d);
31 struct var_set *var_set_create_from_array (struct variable *const *var,
34 size_t var_set_get_n (const struct var_set *vs);
36 void var_set_destroy (struct var_set *vs);
39 /* Variable parsers. */
43 PV_NONE = 0, /* No options. */
44 PV_SINGLE = 1 << 0, /* Restrict to a single name or TO use. */
45 PV_DUPLICATE = 1 << 1, /* Don't merge duplicates. */
46 PV_APPEND = 1 << 2, /* Append to existing list. */
47 PV_NO_DUPLICATE = 1 << 3, /* Error on duplicates. */
48 PV_NUMERIC = 1 << 4, /* Vars must be numeric. */
49 PV_STRING = 1 << 5, /* Vars must be string. */
50 PV_SAME_TYPE = 1 << 6, /* All vars must be the same type. */
51 PV_SAME_WIDTH = 1 << 7, /* All vars must be the same type and width. */
52 PV_NO_SCRATCH = 1 << 8, /* Disallow scratch variables. */
55 struct variable *parse_variable (struct lexer *, const struct dictionary *);
56 bool parse_variables (struct lexer *, const struct dictionary *, struct variable ***, size_t *,
58 bool parse_variables_pool (struct lexer *, struct pool *, const struct dictionary *,
59 struct variable ***, size_t *, int opts);
60 bool parse_var_set_vars (struct lexer *, const struct var_set *, struct variable ***, size_t *,
63 char *parse_DATA_LIST_var (struct lexer *, const struct dictionary *);
64 bool parse_DATA_LIST_vars (struct lexer *, const struct dictionary *,
65 char ***names, size_t *n, int opts);
66 bool parse_DATA_LIST_vars_pool (struct lexer *, const struct dictionary *,
68 char ***names, size_t *n, int opts);
69 bool parse_mixed_vars (struct lexer *, const struct dictionary *dict,
70 char ***names, size_t *n, int opts);
71 bool parse_mixed_vars_pool (struct lexer *, const struct dictionary *dict,
73 char ***names, size_t *n, int opts);
75 /* This variable parser supports the unusual situation where set of variables
76 has to be parsed before the associated dictionary is available. Thus,
77 parsing proceeds in two phases: first, the variables are parsed in a vector
78 of "struct var_syntax"; second, when the dictionary becomes available, the
79 structs are turned into "struct variable"s. */
83 char *first; /* Always nonnull. */
84 char *last; /* Nonnull for var ranges (e.g. "a TO b"). */
86 /* For error reporting.
88 This only works if var_syntax_parse() and var_syntax_evaluate() are
89 called while we're parsing the same source file. That matches the
90 current use case in MATRIX; if that changes, then this will need to
91 switch to use struct msg_location instead. */
95 void var_syntax_destroy (struct var_syntax *, size_t n);
97 bool var_syntax_parse (struct lexer *, struct var_syntax **, size_t *);
98 bool var_syntax_evaluate (struct lexer *, const struct var_syntax *, size_t,
99 const struct dictionary *,
100 struct variable ***, size_t *, int opts);
104 static inline const struct variable *
105 parse_variable_const (struct lexer *l, const struct dictionary *d)
107 return parse_variable (l, d);
111 parse_variables_const (struct lexer *l, const struct dictionary *d,
112 const struct variable ***v, size_t *s,
115 return parse_variables (l, d, (struct variable ***) v, s, opts);
119 parse_variables_const_pool (struct lexer *l, struct pool *p,
120 const struct dictionary *d,
121 const struct variable ***v, size_t *s, int opts)
123 return parse_variables_pool (l, p, d, (struct variable ***) v, s, opts);
128 static inline struct const_var_set *
129 const_var_set_create_from_dict (const struct dictionary *d)
131 return (struct const_var_set *) var_set_create_from_dict (d);
134 static inline struct const_var_set *
135 const_var_set_create_from_array (const struct variable *const *var,
138 return (struct const_var_set *) var_set_create_from_array ((struct variable *const *) var, s);
143 parse_const_var_set_vars (struct lexer *l, const struct const_var_set *vs,
144 const struct variable ***v, size_t *s, int opts)
146 return parse_var_set_vars (l, (const struct var_set *) vs,
147 (struct variable ***) v, s, opts);
151 const_var_set_destroy (struct const_var_set *vs)
153 var_set_destroy ((struct var_set *) vs);
157 If the match succeeds, the variable will be placed in VAR.
158 Returns true if successful */
160 lex_match_variable (struct lexer *lexer, const struct dictionary *dict, const struct variable **var);
164 /* Parse an interaction.
165 If not successful return false.
166 Otherwise, a newly created interaction will be placed in IACT.
167 It is the caller's responsibility to destroy this interaction.
170 parse_design_interaction (struct lexer *lexer, const struct dictionary *dict, struct interaction **iact);
174 #endif /* variable-parser.h */