projects / deliverable / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| bf070c84 SE |
1 | /* Expression parsing and evaluation for plural form selection. |
| 2 | Copyright (C) 2000, 2001, 2002 Free Software Foundation, Inc. | |
| 3 | Written by Ulrich Drepper <drepper@cygnus.com>, 2000. | |
| 4 | ||
| 5 | This program is free software; you can redistribute it and/or modify it | |
| 6 | under the terms of the GNU Library General Public License as published | |
| 7 | by the Free Software Foundation; either version 2, or (at your option) | |
| 8 | any later version. | |
| 9 | ||
| 10 | This program is distributed in the hope that it will be useful, | |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 | Library General Public License for more details. | |
| 14 | ||
| 15 | You should have received a copy of the GNU Library General Public | |
| 16 | License along with this program; if not, write to the Free Software | |
| 17 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, | |
| 18 | USA. */ | |
| 19 | ||
| 20 | #ifndef _PLURAL_EXP_H | |
| 21 | #define _PLURAL_EXP_H | |
| 22 | ||
| 23 | #ifndef PARAMS | |
| 24 | # if __STDC__ || defined __GNUC__ || defined __SUNPRO_C || defined __cplusplus || __PROTOTYPES | |
| 25 | # define PARAMS(args) args | |
| 26 | # else | |
| 27 | # define PARAMS(args) () | |
| 28 | # endif | |
| 29 | #endif | |
| 30 | ||
| 31 | #ifndef internal_function | |
| 32 | # define internal_function | |
| 33 | #endif | |
| 34 | ||
| 35 | #ifndef attribute_hidden | |
| 36 | # define attribute_hidden | |
| 37 | #endif | |
| 38 | ||
| 39 | ||
| 40 | /* This is the representation of the expressions to determine the | |
| 41 | plural form. */ | |
| 42 | struct expression | |
| 43 | { | |
| 44 | int nargs; /* Number of arguments. */ | |
| 45 | enum operator | |
| 46 | { | |
| 47 | /* Without arguments: */ | |
| 48 | var, /* The variable "n". */ | |
| 49 | num, /* Decimal number. */ | |
| 50 | /* Unary operators: */ | |
| 51 | lnot, /* Logical NOT. */ | |
| 52 | /* Binary operators: */ | |
| 53 | mult, /* Multiplication. */ | |
| 54 | divide, /* Division. */ | |
| 55 | module, /* Modulo operation. */ | |
| 56 | plus, /* Addition. */ | |
| 57 | minus, /* Subtraction. */ | |
| 58 | less_than, /* Comparison. */ | |
| 59 | greater_than, /* Comparison. */ | |
| 60 | less_or_equal, /* Comparison. */ | |
| 61 | greater_or_equal, /* Comparison. */ | |
| 62 | equal, /* Comparison for equality. */ | |
| 63 | not_equal, /* Comparison for inequality. */ | |
| 64 | land, /* Logical AND. */ | |
| 65 | lor, /* Logical OR. */ | |
| 66 | /* Ternary operators: */ | |
| 67 | qmop /* Question mark operator. */ | |
| 68 | } operation; | |
| 69 | union | |
| 70 | { | |
| 71 | unsigned long int num; /* Number value for `num'. */ | |
| 72 | struct expression *args[3]; /* Up to three arguments. */ | |
| 73 | } val; | |
| 74 | }; | |
| 75 | ||
| 76 | /* This is the data structure to pass information to the parser and get | |
| 77 | the result in a thread-safe way. */ | |
| 78 | struct parse_args | |
| 79 | { | |
| 80 | const char *cp; | |
| 81 | struct expression *res; | |
| 82 | }; | |
| 83 | ||
| 84 | ||
| 85 | /* Names for the libintl functions are a problem. This source code is used | |
| 86 | 1. in the GNU C Library library, | |
| 87 | 2. in the GNU libintl library, | |
| 88 | 3. in the GNU gettext tools. | |
| 89 | The function names in each situation must be different, to allow for | |
| 90 | binary incompatible changes in 'struct expression'. Furthermore, | |
| 91 | 1. in the GNU C Library library, the names have a __ prefix, | |
| 92 | 2.+3. in the GNU libintl library and in the GNU gettext tools, the names | |
| 93 | must follow ANSI C and not start with __. | |
| 94 | So we have to distinguish the three cases. */ | |
| 95 | #ifdef _LIBC | |
| 96 | # define FREE_EXPRESSION __gettext_free_exp | |
| 97 | # define PLURAL_PARSE __gettextparse | |
| 98 | # define GERMANIC_PLURAL __gettext_germanic_plural | |
| 99 | # define EXTRACT_PLURAL_EXPRESSION __gettext_extract_plural | |
| 100 | #elif defined (IN_LIBINTL) | |
| 101 | # define FREE_EXPRESSION libintl_gettext_free_exp | |
| 102 | # define PLURAL_PARSE libintl_gettextparse | |
| 103 | # define GERMANIC_PLURAL libintl_gettext_germanic_plural | |
| 104 | # define EXTRACT_PLURAL_EXPRESSION libintl_gettext_extract_plural | |
| 105 | #else | |
| 106 | # define FREE_EXPRESSION free_plural_expression | |
| 107 | # define PLURAL_PARSE parse_plural_expression | |
| 108 | # define GERMANIC_PLURAL germanic_plural | |
| 109 | # define EXTRACT_PLURAL_EXPRESSION extract_plural_expression | |
| 110 | #endif | |
| 111 | ||
| 112 | extern void FREE_EXPRESSION PARAMS ((struct expression *exp)) | |
| 113 | internal_function; | |
| 114 | extern int PLURAL_PARSE PARAMS ((void *arg)); | |
| 115 | extern struct expression GERMANIC_PLURAL attribute_hidden; | |
| 116 | extern void EXTRACT_PLURAL_EXPRESSION PARAMS ((const char *nullentry, | |
| 117 | struct expression **pluralp, | |
| 118 | unsigned long int *npluralsp)) | |
| 119 | internal_function; | |
| 120 | ||
| 121 | #if !defined (_LIBC) && !defined (IN_LIBINTL) | |
| 122 | extern unsigned long int plural_eval PARAMS ((struct expression *pexp, | |
| 123 | unsigned long int n)); | |
| 124 | #endif | |
| 125 | ||
| 126 | #endif /* _PLURAL_EXP_H */ |