-/* PSPP - computes sample statistics.
- Copyright (C) 1997-9, 2000 Free Software Foundation, Inc.
- Written by Ben Pfaff <blp@gnu.org>.
+/* PSPP - a program for statistical analysis.
+ Copyright (C) 1997-9, 2000, 2010, 2011 Free Software Foundation, Inc.
- 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 !lex_def_h
-#define lex_def_h 1
+#ifndef DATA_IDENTIFIER_H
+#define DATA_IDENTIFIER_H 1
#include <ctype.h>
#include <stdbool.h>
-#include <sys/types.h>
+#include <unitypes.h>
+#include "libpspp/str.h"
+
+#define TOKEN_TYPES \
+ TOKEN_TYPE(ID) /* Identifier. */ \
+ TOKEN_TYPE(POS_NUM) /* Positive number. */ \
+ TOKEN_TYPE(NEG_NUM) /* Negative number. */ \
+ TOKEN_TYPE(STRING) /* Quoted string. */ \
+ TOKEN_TYPE(STOP) /* End of input. */ \
+ \
+ TOKEN_TYPE(ENDCMD) /* . */ \
+ TOKEN_TYPE(PLUS) /* + */ \
+ TOKEN_TYPE(DASH) /* - */ \
+ TOKEN_TYPE(ASTERISK) /* * */ \
+ TOKEN_TYPE(SLASH) /* / */ \
+ TOKEN_TYPE(EQUALS) /* = */ \
+ TOKEN_TYPE(LPAREN) /* ( */ \
+ TOKEN_TYPE(RPAREN) /* ) */ \
+ TOKEN_TYPE(LBRACK) /* [ */ \
+ TOKEN_TYPE(RBRACK) /* ] */ \
+ TOKEN_TYPE(COMMA) /* , */ \
+ \
+ TOKEN_TYPE(AND) /* AND */ \
+ TOKEN_TYPE(OR) /* OR */ \
+ TOKEN_TYPE(NOT) /* NOT */ \
+ \
+ TOKEN_TYPE(EQ) /* EQ */ \
+ TOKEN_TYPE(GE) /* GE or >= */ \
+ TOKEN_TYPE(GT) /* GT or > */ \
+ TOKEN_TYPE(LE) /* LE or <= */ \
+ TOKEN_TYPE(LT) /* LT or < */ \
+ TOKEN_TYPE(NE) /* NE or ~= */ \
+ \
+ TOKEN_TYPE(ALL) /* ALL */ \
+ TOKEN_TYPE(BY) /* BY */ \
+ TOKEN_TYPE(TO) /* TO */ \
+ TOKEN_TYPE(WITH) /* WITH */ \
+ \
+ TOKEN_TYPE(EXP) /* ** */
/* Token types. */
-/* The order of the enumerals below is important. Do not change it. */
-enum
+enum token_type
{
- T_ID = 256, /* Identifier. */
- T_POS_NUM, /* Positive number. */
- T_NEG_NUM, /* Negative number. */
- T_STRING, /* Quoted string. */
- T_STOP, /* End of input. */
+#define TOKEN_TYPE(TYPE) T_##TYPE,
+ TOKEN_TYPES
+ TOKEN_N_TYPES
+#undef TOKEN_TYPE
+ };
- T_AND, /* AND */
- T_OR, /* OR */
- T_NOT, /* NOT */
+const char *token_type_to_name (enum token_type);
+const char *token_type_to_string (enum token_type);
- T_EQ, /* EQ */
- T_GE, /* GE or >= */
- T_GT, /* GT or > */
- T_LE, /* LE or <= */
- T_LT, /* LT or < */
- T_NE, /* NE or ~= */
+/* Tokens. */
+bool lex_is_keyword (enum token_type);
- T_ALL, /* ALL */
- T_BY, /* BY */
- T_TO, /* TO */
- T_WITH, /* WITH */
+/* Validating identifiers. */
+#define ID_MAX_LEN 64 /* Maximum length of identifier, in bytes. */
- T_EXP, /* ** */
-
- T_FIRST_KEYWORD = T_AND,
- T_LAST_KEYWORD = T_WITH,
- T_N_KEYWORDS = T_LAST_KEYWORD - T_FIRST_KEYWORD + 1
- };
+bool id_is_valid (const char *id, const char *dict_encoding, bool issue_error);
+bool id_is_plausible (const char *id, bool issue_error);
/* Recognizing identifiers. */
bool lex_is_id1 (char);
bool lex_is_idn (char);
-char *lex_skip_identifier (const char *);
+bool lex_uc_is_id1 (ucs4_t);
+bool lex_uc_is_idn (ucs4_t);
+bool lex_uc_is_space (ucs4_t);
+size_t lex_id_get_length (struct substring);
/* Comparing identifiers. */
-bool lex_id_match_len (const char *keyword_string, size_t keyword_len,
- const char *token_string, size_t token_len);
-bool lex_id_match (const char *keyword_string, const char *token_string);
-int lex_id_to_token (const char *id, size_t len);
-
-extern const char *keywords[T_N_KEYWORDS + 1] ;
+bool lex_id_match (struct substring keyword, struct substring token);
+bool lex_id_match_n (struct substring keyword, struct substring token,
+ size_t n);
+int lex_id_to_token (struct substring);
-#endif /* !lex_def_h */
+#endif /* !data/identifier.h */
projects / pspp-builds.git / blobdiff