/* PSPP - computes sample statistics. Copyright (C) 1997-9, 2000 Free Software Foundation, Inc. Written by Ben Pfaff . 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 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. */ #if !lex_def_h #define lex_def_h 1 #include #include #include /* Returns nonzero if character CH may be the first character in an identifier. */ #define CHAR_IS_ID1(CH) \ (isalpha ((unsigned char) (CH)) \ || (CH) == '@' \ || (CH) == '#' \ || (CH) == '$') /* Returns nonzero if character CH may be a character in an identifier other than the first. */ #define CHAR_IS_IDN(CH) \ (CHAR_IS_ID1 (CH) \ || isdigit ((unsigned char) (CH)) \ || (CH) == '.' \ || (CH) == '_') /* Token types. */ /* The order of the enumerals below is important. Do not change it. */ enum { T_ID = 256, /* Identifier. */ T_POS_NUM, /* Positive number. */ T_NEG_NUM, /* Negative number. */ T_STRING, /* Quoted string. */ T_STOP, /* End of input. */ T_AND, /* AND */ T_OR, /* OR */ T_NOT, /* NOT */ T_EQ, /* EQ */ T_GE, /* GE or >= */ T_GT, /* GT or > */ T_LE, /* LE or <= */ T_LT, /* LT or < */ T_NE, /* NE or ~= */ T_ALL, /* ALL */ T_BY, /* BY */ T_TO, /* TO */ T_WITH, /* WITH */ T_EXP, /* ** */ T_FIRST_KEYWORD = T_AND, T_LAST_KEYWORD = T_WITH, T_N_KEYWORDS = T_LAST_KEYWORD - T_FIRST_KEYWORD + 1 }; /* Comparing identifiers. */ int lex_id_match_len (const char *keyword_string, size_t keyword_len, const char *token_string, size_t token_len); int lex_id_match (const char *keyword_string, const char *token_string); int lex_id_to_token (const char *id, size_t len); #endif /* !lex_def_h */