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- /* classes: h_files */
-
- #ifndef ENVIRONMENTS_H
- #define ENVIRONMENTS_H
- /* Copyright (C) 1999, 2000 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, 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 software; see the file COPYING. If not, write to
- * the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
- * Boston, MA 02111-1307 USA
- *
- * As a special exception, the Free Software Foundation gives permission
- * for additional uses of the text contained in its release of GUILE.
- *
- * The exception is that, if you link the GUILE library with other files
- * to produce an executable, this does not by itself cause the
- * resulting executable to be covered by the GNU General Public License.
- * Your use of that executable is in no way restricted on account of
- * linking the GUILE library code into it.
- *
- * This exception does not however invalidate any other reasons why
- * the executable file might be covered by the GNU General Public License.
- *
- * This exception applies only to the code released by the
- * Free Software Foundation under the name GUILE. If you copy
- * code from other Free Software Foundation releases into a copy of
- * GUILE, as the General Public License permits, the exception does
- * not apply to the code that you add in this way. To avoid misleading
- * anyone as to the status of such modified files, you must delete
- * this exception notice from them.
- *
- * If you write modifications of your own for GUILE, it is your choice
- * whether to permit this exception to apply to your modifications.
- * If you do not wish that, delete this exception notice. */
-
-
- #include "libguile/__scm.h"
-
-
-
- /* The type for folding functions written in C. A function meant to be passed
- * to scm_c_environment_fold should have the type scm_environment_folder.
- */
- typedef SCM (*scm_environment_folder) (SCM data, SCM sym, SCM val, SCM tail);
-
-
- /* The type for observer functions written in C. A function meant to be
- * passed to scm_c_environment_observe should have the type
- * scm_environment_observer.
- */
- typedef void (*scm_environment_observer) (SCM env, SCM data);
-
-
- struct scm_environment_funcs {
- SCM (*ref) (SCM self, SCM symbol);
- SCM (*fold) (SCM self, scm_environment_folder proc, SCM data, SCM init);
-
- SCM (*define) (SCM self, SCM symbol, SCM value);
- SCM (*undefine) (SCM self, SCM symbol);
- SCM (*set) (SCM self, SCM symbol, SCM value);
-
- SCM (*cell) (SCM self, SCM symbol, int for_write);
- SCM (*observe) (SCM self, scm_environment_observer proc, SCM data, int weak_p);
- void (*unobserve) (SCM self, SCM token);
-
- SCM (*mark) (SCM self);
- size_t (*free) (SCM self);
- int (*print) (SCM self, SCM port, scm_print_state *pstate);
- };
-
-
-
- #define SCM_ENVIRONMENT_SUCCESS SCM_BOOL_T
- #define SCM_ENVIRONMENT_BINDING_IMMUTABLE SCM_MAKINUM (0)
- #define SCM_ENVIRONMENT_LOCATION_IMMUTABLE SCM_MAKINUM (1)
- #define SCM_ENVIRONMENT_LOCATION_NO_CELL SCM_BOOL_F
-
- extern scm_t_bits scm_tc16_environment;
-
- #define SCM_ENVIRONMENT_P(x) \
- (!SCM_IMP (x) && SCM_CELL_TYPE (x) == scm_tc16_environment)
- #define SCM_ENVIRONMENT_FUNCS(env) \
- (*((struct scm_environment_funcs **) SCM_CELL_WORD_1 (env)))
- #define SCM_ENVIRONMENT_BOUND_P(env, symbol) \
- (!SCM_UNBNDP (SCM_ENVIRONMENT_REF (env, symbol)))
- #define SCM_ENVIRONMENT_REF(env, symbol) \
- ((*(SCM_ENVIRONMENT_FUNCS (env)->ref)) (env, symbol))
- #define SCM_ENVIRONMENT_FOLD(env, proc, data, init) \
- ((*(SCM_ENVIRONMENT_FUNCS (env)->fold)) (env, proc, data, init))
- #define SCM_ENVIRONMENT_DEFINE(env, symbol, value) \
- ((*(SCM_ENVIRONMENT_FUNCS (env)->define)) (env, symbol, value))
- #define SCM_ENVIRONMENT_UNDEFINE(env, symbol) \
- ((*(SCM_ENVIRONMENT_FUNCS (env)->undefine)) (env, symbol))
- #define SCM_ENVIRONMENT_SET(env, symbol, value) \
- ((*(SCM_ENVIRONMENT_FUNCS (env)->set)) (env, symbol, value))
- #define SCM_ENVIRONMENT_CELL(env, symbol, for_write) \
- ((*(SCM_ENVIRONMENT_FUNCS (env)->cell)) (env, symbol, for_write))
- #define SCM_ENVIRONMENT_OBSERVE(env, proc, data, weak_p) \
- ((*(SCM_ENVIRONMENT_FUNCS (env)->observe)) (env, proc, data, weak_p))
- #define SCM_ENVIRONMENT_UNOBSERVE(env, token) \
- ((*(SCM_ENVIRONMENT_FUNCS (env)->unobserve)) (env, token))
-
- extern scm_t_bits scm_tc16_observer;
-
- #define SCM_OBSERVER_P(x) \
- (!SCM_IMP (x) && (SCM_CELL_TYPE (x) == scm_tc16_observer))
- #define SCM_OBSERVER_ENVIRONMENT(x) \
- (SCM_CELL_OBJECT_1 (x))
- #define SCM_OBSERVER_DATA(x) \
- (SCM_CELL_OBJECT_2 (x))
- #define SCM_OBSERVER_PROC(x) \
- ((scm_environment_observer) SCM_CELL_WORD_3 (x))
-
- extern SCM scm_system_environment;
-
- extern void scm_error_environment_unbound (const char *, SCM, SCM) SCM_NORETURN;
- extern void scm_error_environment_immutable_binding (const char *, SCM, SCM) SCM_NORETURN;
- extern void scm_error_environment_immutable_location (const char *, SCM, SCM) SCM_NORETURN;
-
- extern SCM scm_make_environment (void *type);
- extern SCM scm_environment_p (SCM env);
- extern SCM scm_environment_bound_p (SCM env, SCM sym);
- extern SCM scm_environment_ref (SCM env, SCM sym);
- extern SCM scm_c_environment_ref (SCM env, SCM sym);
- extern SCM scm_environment_fold (SCM env, SCM proc, SCM init);
- extern SCM scm_c_environment_fold (SCM env, scm_environment_folder proc, SCM data, SCM init);
- extern SCM scm_environment_define (SCM env, SCM sym, SCM val);
- extern SCM scm_environment_undefine (SCM env, SCM sym);
- extern SCM scm_environment_set_x (SCM env, SCM sym, SCM val);
- extern SCM scm_environment_cell (SCM env, SCM sym, SCM for_write);
- extern SCM scm_c_environment_cell (SCM env, SCM sym, int for_write);
- extern SCM scm_environment_observe (SCM env, SCM proc);
- extern SCM scm_environment_observe_weak (SCM env, SCM proc);
- extern SCM scm_c_environment_observe (SCM env, scm_environment_observer proc, SCM data, int weak_p);
- extern SCM scm_environment_unobserve (SCM token);
-
- extern void scm_environments_prehistory (void);
- extern void scm_init_environments (void);
-
-
-
- extern void *scm_type_leaf_environment;
-
- #define SCM_LEAF_ENVIRONMENT_P(env) \
- (SCM_ENVIRONMENT_P (env) \
- && SCM_ENVIRONMENT_FUNCS (env) == scm_type_leaf_environment)
-
- extern SCM scm_make_leaf_environment (void);
- extern SCM scm_leaf_environment_p (SCM env);
-
-
-
- extern void *scm_type_eval_environment;
-
- #define SCM_EVAL_ENVIRONMENT_P(env) \
- (SCM_ENVIRONMENT_P (env) \
- && SCM_ENVIRONMENT_FUNCS (env) == scm_type_eval_environment)
-
- extern SCM scm_make_eval_environment (SCM local, SCM imported);
- extern SCM scm_eval_environment_p (SCM env);
- extern SCM scm_eval_environment_local (SCM env);
- extern SCM scm_eval_environment_set_local_x (SCM env, SCM local);
- extern SCM scm_eval_environment_imported (SCM env);
- extern SCM scm_eval_environment_set_imported_x (SCM env, SCM imported);
-
-
-
- extern void *scm_type_import_environment;
-
- #define SCM_IMPORT_ENVIRONMENT_P(env) \
- (SCM_ENVIRONMENT_P (env) \
- && SCM_ENVIRONMENT_FUNCS (env) == scm_type_import_environment)
-
- extern SCM scm_make_import_environment (SCM imports, SCM conflict_proc);
- extern SCM scm_import_environment_p (SCM env);
- extern SCM scm_import_environment_imports (SCM env);
- extern SCM scm_import_environment_set_imports_x (SCM env, SCM imports);
-
-
-
- extern void *scm_type_export_environment;
-
- #define SCM_EXPORT_ENVIRONMENT_P(env) \
- (SCM_ENVIRONMENT_P (env) \
- && SCM_ENVIRONMENT_FUNCS (env) == scm_type_export_environment)
-
- extern SCM scm_make_export_environment (SCM private, SCM signature);
- extern SCM scm_export_environment_p (SCM env);
- extern SCM scm_export_environment_private (SCM env);
- extern SCM scm_export_environment_set_private_x (SCM env, SCM private);
- extern SCM scm_export_environment_signature (SCM env);
- extern SCM scm_export_environment_set_signature_x (SCM env, SCM signature);
-
-
- #endif
-
-
- /*
- Local Variables:
- c-file-style: "gnu"
- End:
- */
-