-/* PSPP - computes sample statistics.
+/* PSPP - a program for statistical analysis.
Copyright (C) 1997-9, 2000 Free Software Foundation, Inc.
- Written by Ben Pfaff <blp@gnu.org>.
- This program is free software; you can redistribute it and/or
- modify it under the terms of the GNU General Public License as
- published by the Free Software Foundation; either version 2 of the
- License, or (at your option) any later version.
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
- This program is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- 02110-1301, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#if !lexer_h
#define lexer_h 1
-#include <data/variable.h>
#include <ctype.h>
#include <stdbool.h>
-
+#include <stddef.h>
#include <data/identifier.h>
+#include <data/variable.h>
+#include <libpspp/getl.h>
-
-extern int token;
-extern double tokval;
-extern char tokid[LONG_NAME_LEN + 1];
-extern struct string tokstr;
-
-#include <stddef.h>
+struct lexer;
/* Initialization. */
-void lex_init (void);
-void lex_done (void);
+struct lexer * lex_create (struct source_stream *);
+void lex_destroy (struct lexer *);
+
+/* State accessors */
+struct source_stream * lex_get_source_stream (const struct lexer *);
+enum syntax_mode lex_current_syntax_mode (const struct lexer *);
+enum error_mode lex_current_error_mode (const struct lexer *);
/* Common functions. */
-void lex_get (void);
-void lex_error (const char *, ...);
+void lex_get (struct lexer *);
+void lex_error (struct lexer *, const char *, ...);
void lex_sbc_only_once (const char *);
-void lex_sbc_missing (const char *);
-int lex_end_of_command (void);
+void lex_sbc_missing (struct lexer *, const char *);
+int lex_end_of_command (struct lexer *);
/* Token testing functions. */
-bool lex_is_number (void);
-double lex_number (void);
-bool lex_is_integer (void);
-long lex_integer (void);
+bool lex_is_number (struct lexer *);
+double lex_number (struct lexer *);
+bool lex_is_integer (struct lexer *);
+long lex_integer (struct lexer *);
+bool lex_is_string (struct lexer *);
+
/* Token matching functions. */
-int lex_match (int);
-int lex_match_id (const char *);
-int lex_match_int (int);
+bool lex_match (struct lexer *, int);
+bool lex_match_id (struct lexer *, const char *);
+bool lex_match_id_n (struct lexer *, const char *, size_t n);
+bool lex_match_int (struct lexer *, int);
+bool lex_match_hyphenated_word (struct lexer *lexer, const char *s);
+
/* Forcible matching functions. */
-int lex_force_match (int);
-int lex_force_match_id (const char *);
-int lex_force_int (void);
-int lex_force_num (void);
-int lex_force_id (void);
-int lex_force_string (void);
-
+bool lex_force_match (struct lexer *, int);
+bool lex_force_match_id (struct lexer *, const char *);
+bool lex_force_int (struct lexer *);
+bool lex_force_num (struct lexer *);
+bool lex_force_id (struct lexer *);
+bool lex_force_string (struct lexer *);
+
/* Weird token functions. */
-int lex_look_ahead (void);
-void lex_put_back (int);
-void lex_put_back_id (const char *tokid);
+int lex_look_ahead (struct lexer *);
+void lex_put_back (struct lexer *, int);
+void lex_put_back_id (struct lexer *, const char *tokid);
/* Weird line processing functions. */
-const char *lex_entire_line (void);
-const char *lex_rest_of_line (int *end_dot);
-void lex_discard_line (void);
-void lex_set_prog (char *p);
+const char *lex_entire_line (const struct lexer *);
+const struct string *lex_entire_line_ds (const struct lexer *);
+const char *lex_rest_of_line (const struct lexer *);
+bool lex_end_dot (const struct lexer *);
+void lex_preprocess_line (struct string *, enum syntax_mode,
+ bool *line_starts_command,
+ bool *line_ends_command);
+void lex_discard_line (struct lexer *);
+void lex_discard_rest_of_command (struct lexer *);
/* Weird line reading functions. */
-bool lex_get_line (void);
+bool lex_get_line (struct lexer *);
+bool lex_get_line_raw (struct lexer *);
/* Token names. */
const char *lex_token_name (int);
-char *lex_token_representation (void);
+char *lex_token_representation (struct lexer *);
+
+/* Token accessors */
+int lex_token (const struct lexer *);
+double lex_tokval (const struct lexer *);
+const char *lex_tokid (const struct lexer *);
+const struct string *lex_tokstr (const struct lexer *);
/* Really weird functions. */
-void lex_negative_to_dash (void);
-void lex_reset_eof (void);
-void lex_skip_comment (void);
+void lex_negative_to_dash (struct lexer *);
+void lex_skip_comment (struct lexer *);
#endif /* !lexer_h */
projects / pspp-builds.git / blobdiff