/* classes: h_files */ #ifndef SCM_ENVIRONMENTS_H #define SCM_ENVIRONMENTS_H /* Copyright (C) 1999,2000, 2006 Free Software Foundation, Inc. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #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); void (*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_from_int (0) #define SCM_ENVIRONMENT_LOCATION_IMMUTABLE scm_from_int (1) #define SCM_ENVIRONMENT_LOCATION_NO_CELL SCM_BOOL_F SCM_API 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)) SCM_API 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)) SCM_API SCM scm_system_environment; SCM_API void scm_error_environment_unbound (const char *, SCM, SCM) SCM_NORETURN; SCM_API void scm_error_environment_immutable_binding (const char *, SCM, SCM) SCM_NORETURN; SCM_API void scm_error_environment_immutable_location (const char *, SCM, SCM) SCM_NORETURN; SCM_API SCM scm_make_environment (void *type); SCM_API SCM scm_environment_p (SCM env); SCM_API SCM scm_environment_bound_p (SCM env, SCM sym); SCM_API SCM scm_environment_ref (SCM env, SCM sym); SCM_API SCM scm_c_environment_ref (SCM env, SCM sym); SCM_API SCM scm_environment_fold (SCM env, SCM proc, SCM init); SCM_API SCM scm_c_environment_fold (SCM env, scm_environment_folder proc, SCM data, SCM init); SCM_API SCM scm_environment_define (SCM env, SCM sym, SCM val); SCM_API SCM scm_environment_undefine (SCM env, SCM sym); SCM_API SCM scm_environment_set_x (SCM env, SCM sym, SCM val); SCM_API SCM scm_environment_cell (SCM env, SCM sym, SCM for_write); SCM_API SCM scm_c_environment_cell (SCM env, SCM sym, int for_write); SCM_API SCM scm_environment_observe (SCM env, SCM proc); SCM_API SCM scm_environment_observe_weak (SCM env, SCM proc); SCM_API SCM scm_c_environment_observe (SCM env, scm_environment_observer proc, SCM data, int weak_p); SCM_API SCM scm_environment_unobserve (SCM token); SCM_API void scm_environments_prehistory (void); SCM_API void scm_init_environments (void); SCM_API void *scm_type_leaf_environment; #define SCM_LEAF_ENVIRONMENT_P(env) \ (SCM_ENVIRONMENT_P (env) \ && SCM_ENVIRONMENT_FUNCS (env) == scm_type_leaf_environment) SCM_API SCM scm_make_leaf_environment (void); SCM_API SCM scm_leaf_environment_p (SCM env); SCM_API void *scm_type_eval_environment; #define SCM_EVAL_ENVIRONMENT_P(env) \ (SCM_ENVIRONMENT_P (env) \ && SCM_ENVIRONMENT_FUNCS (env) == scm_type_eval_environment) SCM_API SCM scm_make_eval_environment (SCM local, SCM imported); SCM_API SCM scm_eval_environment_p (SCM env); SCM_API SCM scm_eval_environment_local (SCM env); SCM_API SCM scm_eval_environment_set_local_x (SCM env, SCM local); SCM_API SCM scm_eval_environment_imported (SCM env); SCM_API SCM scm_eval_environment_set_imported_x (SCM env, SCM imported); SCM_API void *scm_type_import_environment; #define SCM_IMPORT_ENVIRONMENT_P(env) \ (SCM_ENVIRONMENT_P (env) \ && SCM_ENVIRONMENT_FUNCS (env) == scm_type_import_environment) SCM_API SCM scm_make_import_environment (SCM imports, SCM conflict_proc); SCM_API SCM scm_import_environment_p (SCM env); SCM_API SCM scm_import_environment_imports (SCM env); SCM_API SCM scm_import_environment_set_imports_x (SCM env, SCM imports); SCM_API void *scm_type_export_environment; #define SCM_EXPORT_ENVIRONMENT_P(env) \ (SCM_ENVIRONMENT_P (env) \ && SCM_ENVIRONMENT_FUNCS (env) == scm_type_export_environment) SCM_API SCM scm_make_export_environment (SCM private, SCM signature); SCM_API SCM scm_export_environment_p (SCM env); SCM_API SCM scm_export_environment_private (SCM env); SCM_API SCM scm_export_environment_set_private_x (SCM env, SCM private); SCM_API SCM scm_export_environment_signature (SCM env); SCM_API SCM scm_export_environment_set_signature_x (SCM env, SCM signature); #endif /* SCM_ENVIRONMENTS_H */ /* Local Variables: c-file-style: "gnu" End: */