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3.78.91
variable.h
145 строк
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Paul Smith
* Fix for dir.c from Andreas Schwab.
07 фев 2000, 22:54
07 фев 2000, 22:54
17f2dda
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/* Definitions for using variables in GNU Make. Copyright (C) 1988, 1989, 1990, 1991, 1992 Free Software Foundation, Inc. This file is part of GNU Make. GNU Make 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, or (at your option) any later version. GNU Make 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 GNU Make; see the file COPYING. If not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ /* Codes in a variable definition saying where the definition came from. Increasing numeric values signify less-overridable definitions. */ enum variable_origin { o_default, /* Variable from the default set. */ o_env, /* Variable from environment. */ o_file, /* Variable given in a makefile. */ o_env_override, /* Variable from environment, if -e. */ o_command, /* Variable given by user. */ o_override, /* Variable from an `override' directive. */ o_automatic, /* Automatic variable -- cannot be set. */ o_invalid /* Core dump time. */ }; /* Structure that represents one variable definition. Each bucket of the hash table is a chain of these, chained through `next'. */ struct variable { struct variable *next; /* Link in the chain. */ char *name; /* Variable name. */ char *value; /* Variable value. */ struct floc fileinfo; /* Where the variable was defined. */ enum variable_origin origin ENUM_BITFIELD (3); /* Variable origin. */ unsigned int recursive:1; /* Gets recursively re-evaluated. */ unsigned int expanding:1; /* Nonzero if currently being expanded. */ unsigned int per_target:1; /* Nonzero if a target-specific variable. */ unsigned int append:1; /* Nonzero if an appending target-specific variable. */ enum variable_export { v_export, /* Export this variable. */ v_noexport, /* Don't export this variable. */ v_ifset, /* Export it if it has a non-default value. */ v_default /* Decide in target_environment. */ } export ENUM_BITFIELD (2); }; /* Structure that represents a variable set. */ struct variable_set { struct variable **table; /* Hash table of variables. */ unsigned int buckets; /* Number of hash buckets in `table'. */ }; /* Structure that represents a list of variable sets. */ struct variable_set_list { struct variable_set_list *next; /* Link in the chain. */ struct variable_set *set; /* Variable set. */ }; extern char *variable_buffer; extern struct variable_set_list *current_variable_set_list; /* expand.c */ extern char *variable_buffer_output PARAMS ((char *ptr, char *string, unsigned int length)); extern char *variable_expand PARAMS ((char *line)); extern char *allocated_variable_expand_for_file PARAMS ((char *line, struct file *file)); #define allocated_variable_expand(line) \ allocated_variable_expand_for_file (line, (struct file *) 0) extern char *expand_argument PARAMS ((char *str, char *end)); extern char *variable_expand_string PARAMS ((char *line, char *string, long length)); /* function.c */ extern int handle_function PARAMS ((char **op, char **stringp)); extern int pattern_matches PARAMS ((char *pattern, char *percent, char *str)); extern char *subst_expand PARAMS ((char *o, char *text, char *subst, char *replace, unsigned int slen, unsigned int rlen, int by_word, int suffix_only)); extern char *patsubst_expand PARAMS ((char *o, char *text, char *pattern, char *replace, char *pattern_percent, char *replace_percent)); /* expand.c */ extern char *recursively_expand_setlist PARAMS ((struct variable *v, struct variable_set_list *l)); #define recursively_expand(v) recursively_expand_setlist((v),(struct variable_set_list *)0) /* variable.c */ extern struct variable_set_list *create_new_variable_set PARAMS ((void)); extern struct variable_set_list *push_new_variable_scope PARAMS ((void)); extern void pop_variable_scope PARAMS ((void)); extern void define_automatic_variables PARAMS ((void)); extern void initialize_file_variables PARAMS ((struct file *file, int read)); extern void print_file_variables PARAMS ((struct file *file)); extern void print_variable_set PARAMS ((struct variable_set *set, char *prefix)); extern void merge_variable_set_lists PARAMS ((struct variable_set_list **setlist0, struct variable_set_list *setlist1)); extern struct variable *try_variable_definition PARAMS ((const struct floc *flocp, char *line, enum variable_origin origin, int target_var)); extern struct variable *lookup_variable_setlist PARAMS ((char *name, unsigned int length, struct variable_set_list **lisp)); #define lookup_variable(n,l) lookup_variable_setlist((n),(l),\ (struct variable_set_list **)0) extern struct variable *define_variable_in_set PARAMS ((char *name, unsigned int length, char *value, enum variable_origin origin, int recursive, struct variable_set *set, const struct floc *flocp)); /* Define a variable in the current variable set. */ #define define_variable(n,l,v,o,r) \ define_variable_in_set((n),(l),(v),(o),(r),\ current_variable_set_list->set,NILF) /* Define a variable with a location in the current variable set. */ #define define_variable_loc(n,l,v,o,r,f) \ define_variable_in_set((n),(l),(v),(o),(r),\ current_variable_set_list->set,(f)) /* Define a variable in FILE's variable set. */ #define define_variable_for_file(n,l,v,o,r,f) \ define_variable_in_set((n),(l),(v),(o),(r),(f)->variables->set,NILF) extern char **target_environment PARAMS ((struct file *file)); extern int export_all_variables;