1 /* PSPP - computes sample statistics.
2 Copyright (C) 1997-9, 2000 Free Software Foundation, Inc.
4 This program is free software; you can redistribute it and/or
5 modify it under the terms of the GNU General Public License as
6 published by the Free Software Foundation; either version 2 of the
7 License, or (at your option) any later version.
9 This program is distributed in the hope that it will be useful, but
10 WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 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, write to the Free Software
16 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
24 /* Expression parsing flags. */
27 EXPR_NUMBER = 0xf000, /* Number. */
28 EXPR_STRING, /* String. */
29 EXPR_BOOLEAN, /* Boolean (number limited to 0, 1, SYSMIS). */
40 struct expression *expr_parse (struct lexer *lexer, struct dataset *, enum expr_type);
41 struct expression *expr_parse_pool (struct lexer *,
45 void expr_free (struct expression *);
48 double expr_evaluate_num (struct expression *, const struct ccase *,
50 void expr_evaluate_str (struct expression *, const struct ccase *,
51 int case_idx, char *dst, size_t dst_size);
53 const struct operation *expr_get_function (size_t idx);
54 size_t expr_get_function_cnt (void);
55 const char *expr_operation_get_name (const struct operation *);
56 const char *expr_operation_get_prototype (const struct operation *);
57 int expr_operation_get_arg_cnt (const struct operation *);