1 /* PSPP - a program for statistical analysis.
2 Copyright (C) 1997-9, 2000 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/>. */
23 #include <data/identifier.h>
24 #include <data/variable.h>
25 #include <libpspp/getl.h>
30 struct lexer * lex_create (struct source_stream *);
31 void lex_destroy (struct lexer *);
34 struct source_stream * lex_get_source_stream (const struct lexer *);
35 enum syntax_mode lex_current_syntax_mode (const struct lexer *);
36 enum error_mode lex_current_error_mode (const struct lexer *);
38 /* Common functions. */
39 void lex_get (struct lexer *);
40 void lex_error (struct lexer *, const char *, ...);
41 void lex_sbc_only_once (const char *);
42 void lex_sbc_missing (struct lexer *, const char *);
43 int lex_end_of_command (struct lexer *);
45 /* Token testing functions. */
46 bool lex_is_number (struct lexer *);
47 double lex_number (struct lexer *);
48 bool lex_is_integer (struct lexer *);
49 long lex_integer (struct lexer *);
50 bool lex_is_string (struct lexer *);
53 /* Token matching functions. */
54 bool lex_match (struct lexer *, int);
55 bool lex_match_id (struct lexer *, const char *);
56 bool lex_match_id_n (struct lexer *, const char *, size_t n);
57 bool lex_match_int (struct lexer *, int);
58 bool lex_match_hyphenated_word (struct lexer *lexer, const char *s);
61 /* Forcible matching functions. */
62 bool lex_force_match (struct lexer *, int);
63 bool lex_force_match_id (struct lexer *, const char *);
64 bool lex_force_int (struct lexer *);
65 bool lex_force_num (struct lexer *);
66 bool lex_force_id (struct lexer *);
67 bool lex_force_string (struct lexer *);
69 /* Weird token functions. */
70 int lex_look_ahead (struct lexer *);
71 void lex_put_back (struct lexer *, int);
72 void lex_put_back_id (struct lexer *, const char *tokid);
74 /* Weird line processing functions. */
75 const char *lex_entire_line (const struct lexer *);
76 const struct string *lex_entire_line_ds (const struct lexer *);
77 const char *lex_rest_of_line (const struct lexer *);
78 bool lex_end_dot (const struct lexer *);
79 void lex_preprocess_line (struct string *, enum syntax_mode,
80 bool *line_starts_command,
81 bool *line_ends_command);
82 void lex_discard_line (struct lexer *);
83 void lex_discard_rest_of_command (struct lexer *);
85 /* Weird line reading functions. */
86 bool lex_get_line (struct lexer *);
87 bool lex_get_line_raw (struct lexer *);
90 const char *lex_token_name (int);
91 char *lex_token_representation (struct lexer *);
94 int lex_token (const struct lexer *);
95 double lex_tokval (const struct lexer *);
96 const char *lex_tokid (const struct lexer *);
97 const struct string *lex_tokstr (const struct lexer *);
99 /* Really weird functions. */
100 void lex_negative_to_dash (struct lexer *);
101 void lex_skip_comment (struct lexer *);
103 #endif /* !lexer_h */