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br-parser-tools/collects/mzscheme/include/schemef.h

559 lines
22 KiB
C

/*
MzScheme
Copyright (c) 1995 Matthew Flatt
All rights reserved.
Please see the full copyright in the documentation.
libscheme
Copyright (c) 1994 Brent Benson
All rights reserved.
*/
/* MzScheme function prototypes */
/* No macros should go in this file; it is used both to
prototype functions, and as a parsing source for
declaring scheme_extension_table */
/* The scheme_extension_table parser is touchy: don't leave a space
between a function name and it's opening parameter parenthesis. */
/* After this START tag, all comments should start & end on same line */
/* START */
/* Call/cc utilities */
void scheme_init_jmpup_buf(Scheme_Jumpup_Buf *b);
int scheme_setjmpup_relative(Scheme_Jumpup_Buf *b, void *start,
Scheme_Jumpup_Buf *cont);
void scheme_longjmpup(Scheme_Jumpup_Buf *b);
#ifdef USE_MZ_SETJMP
int scheme_setjmp(jmp_buf b);
void scheme_longjmp(jmp_buf b, int v);
#endif
/* Parameters */
Scheme_Object *scheme_make_config(Scheme_Config *base);
Scheme_Object *scheme_branch_config(void);
int scheme_new_param(void);
Scheme_Object *scheme_param_config(char *name, long pos,
int argc, Scheme_Object **argv,
int arity,
Scheme_Prim *check, char *expected,
int isbool);
Scheme_Object *scheme_register_parameter(Scheme_Prim *function, char *name, int which);
Scheme_Env *scheme_get_env(Scheme_Config *config);
/* Processes */
#ifdef MZ_REAL_THREADS
Scheme_Process *scheme_get_current_process();
#else
#ifndef LINK_EXTENSIONS_BY_TABLE
extern Scheme_Process *scheme_current_process;
extern int scheme_fuel_counter;
#else
extern Scheme_Process **scheme_current_process_ptr;
extern int *scheme_fuel_counter_ptr;
#endif
#endif
#ifndef NO_SCHEME_THREADS
Scheme_Object *scheme_make_namespace(int argc, Scheme_Object *argv[]);
Scheme_Object *scheme_thread(Scheme_Object *thunk, Scheme_Config *config);
void scheme_break_thread(Scheme_Process *p);
void scheme_kill_thread(Scheme_Process *p);
#endif
#ifndef MZ_REAL_THREADS
void scheme_process_block(float sleep_time);
void scheme_swap_process(Scheme_Process *process);
#else
void scheme_process_block_w_process(float sleep_time, Scheme_Process *p);
#endif
int scheme_block_until(int (*f)(Scheme_Object *), void (*fdfd)(Scheme_Object *, void *), void *, float);
int scheme_in_main_thread(void);
int scheme_tls_allocate();
void scheme_tls_set(int pos, void *v);
void *scheme_tls_get(int pos);
void scheme_add_namespace_option(Scheme_Object *key, void (*f)(Scheme_Env *));
Scheme_Manager *scheme_make_manager(Scheme_Manager *);
Scheme_Manager_Reference *scheme_add_managed(Scheme_Manager *m, Scheme_Object *o,
Scheme_Close_Manager_Client *f, void *data,
int strong);
void scheme_remove_managed(Scheme_Manager_Reference *m, Scheme_Object *o);
void scheme_close_managed(Scheme_Manager *m);
/* error handling */
void scheme_signal_error(char *msg, ...);
void scheme_raise_exn(int exnid, ...);
void scheme_warning(char *msg, ...);
void scheme_wrong_count(const char *name, int minc, int maxc, int argc,
Scheme_Object **argv);
void scheme_case_lambda_wrong_count(const char *name, int argc,
Scheme_Object **argv, int count, ...);
void scheme_wrong_type(const char *name, const char *expected,
int which, int argc,
Scheme_Object **argv);
void scheme_wrong_return_arity(const char *where,
int expected, int got,
Scheme_Object **argv,
const char *context_detail, ...);
void scheme_unbound_global(Scheme_Object *name);
Scheme_Object *scheme_dynamic_wind(void (*pre)(void *),
Scheme_Object *(*act)(void *),
void (*post)(void *),
Scheme_Object *(*jmp_handler)(void *),
void *data);
/* Types */
Scheme_Type scheme_make_type(const char *name);
/* Type readers & writers for compiled code data */
void scheme_install_type_reader(Scheme_Type type, Scheme_Type_Reader f);
void scheme_install_type_writer(Scheme_Type type, Scheme_Type_Writer f);
/* Constants */
extern Scheme_Object *scheme_eof;
extern Scheme_Object *scheme_null;
extern Scheme_Object *scheme_true;
extern Scheme_Object *scheme_false;
extern Scheme_Object *scheme_void;
extern Scheme_Object *scheme_undefined;
extern Scheme_Object *scheme_tail_call_waiting;
extern Scheme_Object *scheme_multiple_values;
/* Basics */
Scheme_Object *scheme_eval(Scheme_Object *obj, Scheme_Env *env);
Scheme_Object *scheme_eval_multi(Scheme_Object *obj, Scheme_Env *env);
Scheme_Object *scheme_eval_compiled(Scheme_Object *obj);
Scheme_Object *scheme_eval_compiled_multi(Scheme_Object *obj);
Scheme_Object *_scheme_eval_compiled(Scheme_Object *obj);
Scheme_Object *_scheme_eval_compiled_multi(Scheme_Object *obj);
#ifndef MZ_REAL_THREADS
Scheme_Object *scheme_apply(Scheme_Object *rator, int num_rands, Scheme_Object **rands);
Scheme_Object *scheme_apply_multi(Scheme_Object *rator, int num_rands, Scheme_Object **rands);
#else
Scheme_Object *scheme_apply_wp(Scheme_Object *rator, int num_rands, Scheme_Object **rands,
Scheme_Process *p);
Scheme_Object *scheme_apply_multi_wp(Scheme_Object *rator, int num_rands, Scheme_Object **rands,
Scheme_Process *p);
#endif
Scheme_Object *scheme_apply_to_list(Scheme_Object *rator, Scheme_Object *argss);
Scheme_Object *scheme_eval_string(const char *str, Scheme_Env *env);
Scheme_Object *scheme_eval_string_all(const char *str, Scheme_Env *env, int all);
Scheme_Object *_scheme_apply_known_closed_prim(Scheme_Object *rator, int argc,
Scheme_Object **argv);
Scheme_Object *_scheme_apply_known_closed_prim_multi(Scheme_Object *rator, int argc,
Scheme_Object **argv);
Scheme_Object *scheme_values(int c, Scheme_Object **v);
Scheme_Object *scheme_check_one_value(Scheme_Object *v);
/* Tail calls - only use these when you're writing new functions/syntax */
Scheme_Object *scheme_tail_apply(Scheme_Object *f, int n, Scheme_Object **arg);
Scheme_Object *scheme_tail_apply_no_copy(Scheme_Object *f, int n, Scheme_Object **arg);
Scheme_Object *scheme_tail_apply_to_list(Scheme_Object *f, Scheme_Object *l);
Scheme_Object *scheme_tail_eval_expr(Scheme_Object *obj);
void scheme_set_tail_buffer_size(int s);
Scheme_Object *scheme_force_value(Scheme_Object *);
/* Internal */
#ifndef MZ_REAL_THREADS
Scheme_Object *scheme_do_eval(Scheme_Object *obj, int _num_rands, Scheme_Object **rands, int val);
#else
Scheme_Object *scheme_do_eval_w_process(Scheme_Object *obj, int _num_rands, Scheme_Object **rands, int val, Scheme_Process *p);
#endif
/* Allocation */
#ifndef SCHEME_NO_GC
#ifndef SCHEME_NO_GC_PROTO
void *GC_malloc(size_t size_in_bytes);
void *GC_malloc_atomic(size_t size_in_bytes);
void *GC_malloc_stubborn(size_t size_in_bytes);
void *GC_malloc_uncollectable(size_t size_in_bytes);
#endif
#endif
void *scheme_malloc_eternal(size_t n);
void scheme_end_stubborn_change(void *p);
void *scheme_calloc(size_t num, size_t size);
char *scheme_strdup(const char *str);
char *scheme_strdup_eternal(const char *str);
void *scheme_malloc_fail_ok(void *(*f)(size_t), size_t);
void scheme_weak_reference(void **p);
void scheme_weak_reference_indirect(void **p, void *v);
void scheme_add_finalizer(void *p, void (*f)(void *p, void *data), void *data);
void scheme_add_scheme_finalizer(void *p, void (*f)(void *p, void *data), void *data);
void scheme_register_finalizer(void *p,
void (*f)(void *p, void *data), void *data,
void (**oldf)(void *p, void *data),
void **olddata);
void scheme_dont_gc_ptr(void *p);
void scheme_gc_ptr_ok(void *p);
void scheme_collect_garbage(void);
/* Hash table */
Scheme_Hash_Table *scheme_hash_table(int size, int type,
int w_const, int forever);
void scheme_add_to_table(Scheme_Hash_Table *table, const char *key, void *val, int);
void scheme_change_in_table(Scheme_Hash_Table *table, const char *key, void *new_val);
void *scheme_lookup_in_table(Scheme_Hash_Table *table, const char *key);
Scheme_Bucket *scheme_bucket_from_table(Scheme_Hash_Table *table, const char *key);
/* Constructors */
Scheme_Object *scheme_make_prim(Scheme_Prim *prim);
Scheme_Object *scheme_make_noneternal_prim(Scheme_Prim *prim);
Scheme_Object *scheme_make_closed_prim(Scheme_Closed_Prim *prim, void *data);
Scheme_Object *scheme_make_prim_w_arity(Scheme_Prim *prim, const char *name,
short mina, short maxa);
Scheme_Object *scheme_make_folding_prim(Scheme_Prim *prim,
const char *name,
short mina, short maxa,
short functional);
Scheme_Object *scheme_make_noneternal_prim_w_arity(Scheme_Prim *prim,
const char *name,
short mina, short maxa);
Scheme_Object *scheme_make_closed_prim_w_arity(Scheme_Closed_Prim *prim,
void *data, const char *name,
short mina, short maxa);
Scheme_Object *scheme_make_folding_closed_prim(Scheme_Closed_Prim *prim,
void *data, const char *name,
short mina, short maxa,
short functional);
Scheme_Object *scheme_make_closure(Scheme_Env *env, Scheme_Object *code);
Scheme_Object *scheme_make_pair(Scheme_Object *car, Scheme_Object *cdr);
Scheme_Object *scheme_make_string(const char *chars);
Scheme_Object *scheme_make_sized_string(char *chars, long len, int copy);
Scheme_Object *scheme_make_string_without_copying(char *chars);
Scheme_Object *scheme_alloc_string(int size, char fill);
Scheme_Object *scheme_append_string(Scheme_Object *, Scheme_Object *);
Scheme_Object *scheme_make_vector(int size, Scheme_Object *fill);
Scheme_Object *scheme_make_integer_value(long i);
Scheme_Object *scheme_make_integer_value_from_unsigned(unsigned long i);
Scheme_Object *scheme_make_double(double d);
#ifdef MZ_USE_SINGLE_FLOATS
Scheme_Object *scheme_make_float(float f);
#endif
Scheme_Object *scheme_make_char(char ch);
Scheme_Object *scheme_make_promise(Scheme_Object *expr, Scheme_Env *env);
Scheme_Object *scheme_make_promise_from_thunk(Scheme_Object *expr);
#ifndef NO_SCHEME_THREADS
Scheme_Object *scheme_make_sema(long v);
#endif
void scheme_post_sema(Scheme_Object *o);
int scheme_wait_sema(Scheme_Object *o, int just_try);
extern Scheme_Object **scheme_char_constants;
int scheme_get_int_val(Scheme_Object *o, long *v);
int scheme_get_unsigned_int_val(Scheme_Object *o, unsigned long *v);
const char *scheme_get_proc_name(Scheme_Object *p, int *len, int for_error);
/* Bignums */
Scheme_Object *scheme_make_bignum(long v);
Scheme_Object *scheme_make_bignum_from_unsigned(unsigned long v);
double scheme_bignum_to_double(const Scheme_Object *n);
Scheme_Object *scheme_bignum_from_double(double d);
#ifdef MZ_USE_SINGLE_FLOATS
float scheme_bignum_to_float(const Scheme_Object *n);
Scheme_Object *scheme_bignum_from_float(float d);
#else
# define scheme_bignum_to_float scheme_bignum_to_double
# define scheme_bignum_from_float scheme_bignum_from_double
#endif
char *scheme_bignum_to_string(const Scheme_Object *n, int radix);
Scheme_Object *scheme_read_bignum(const char *str, int radix);
Scheme_Object *scheme_bignum_normalize(const Scheme_Object *n);
long scheme_double_to_int(const char *where, double d);
/* Rationals */
Scheme_Object *scheme_make_rational(const Scheme_Object *r, const Scheme_Object *d);
double scheme_rational_to_double(const Scheme_Object *n);
Scheme_Object *scheme_rational_from_double(double d);
#ifdef MZ_USE_SINGLE_FLOATS
float scheme_rational_to_float(const Scheme_Object *n);
Scheme_Object *scheme_rational_from_float(float d);
#else
# define scheme_rational_to_float scheme_rational_to_double
# define scheme_rational_from_float scheme_rational_from_double
#endif
Scheme_Object *scheme_rational_normalize(const Scheme_Object *n);
Scheme_Object *scheme_rational_numerator(const Scheme_Object *n);
Scheme_Object *scheme_rational_denominator(const Scheme_Object *n);
/* Complex */
Scheme_Object *scheme_make_complex(const Scheme_Object *r, const Scheme_Object *i);
Scheme_Object *scheme_complex_normalize(const Scheme_Object *n);
Scheme_Object *scheme_complex_real_part(const Scheme_Object *n);
Scheme_Object *scheme_complex_imaginary_part(const Scheme_Object *n);
/* Exact/inexact: */
int scheme_is_exact(Scheme_Object *n);
int scheme_is_inexact(Scheme_Object *n);
/* Macro and syntax expansion */
Scheme_Object *scheme_expand(Scheme_Object *form, Scheme_Env *env);
/* Compilation */
Scheme_Object *scheme_compile(Scheme_Object *form, Scheme_Env *env, int writeable);
Scheme_Object *scheme_make_promise_value(Scheme_Object *compiled_expr);
/* Ports */
Scheme_Object *scheme_read(Scheme_Object *port);
void scheme_write(Scheme_Object *obj, Scheme_Object *port);
void scheme_display(Scheme_Object *obj, Scheme_Object *port);
void scheme_write_w_max(Scheme_Object *obj, Scheme_Object *port, long maxl);
void scheme_display_w_max(Scheme_Object *obj, Scheme_Object *port, long maxl);
void scheme_write_string(const char *str, long len, Scheme_Object *port);
char *scheme_write_to_string(Scheme_Object *obj, long *len);
char *scheme_display_to_string(Scheme_Object *obj, long *len);
char *scheme_write_to_string_w_max(Scheme_Object *obj, long *len, long maxl);
char *scheme_display_to_string_w_max(Scheme_Object *obj, long *len, long maxl);
void scheme_debug_print(Scheme_Object *obj);
void scheme_flush_output(Scheme_Object *port);
char *scheme_format(char *format, int flen, int argc, Scheme_Object **argv, int *rlen);
void scheme_printf(char *format, int flen, int argc, Scheme_Object **argv);
int scheme_getc(Scheme_Object *port);
void scheme_ungetc(int ch, Scheme_Object *port);
int scheme_char_ready(Scheme_Object *port);
void scheme_need_wakeup(Scheme_Object *port, void *fds);
long scheme_get_chars(Scheme_Object *port, long size, char *buffer);
long scheme_tell(Scheme_Object *port);
long scheme_output_tell(Scheme_Object *port);
long scheme_tell_line(Scheme_Object *port);
void scheme_close_input_port(Scheme_Object *port);
void scheme_close_output_port(Scheme_Object *port);
int scheme_are_all_chars_ready(Scheme_Object *port);
Scheme_Object *scheme_make_port_type(const char *name);
Scheme_Input_Port *scheme_make_input_port(Scheme_Object *subtype, void *data,
int (*getc_fun)(Scheme_Input_Port*),
int (*char_ready_fun)
(Scheme_Input_Port*),
void (*close_fun)
(Scheme_Input_Port*),
void (*need_wakeup_fun)
(Scheme_Input_Port*, void *),
int must_close);
Scheme_Output_Port *scheme_make_output_port(Scheme_Object *subtype,
void *data,
void (*write_string_fun)
(char*,long, Scheme_Output_Port*),
void (*close_fun)
(Scheme_Output_Port*),
int must_close);
Scheme_Object *scheme_make_file_input_port(FILE *fp);
Scheme_Object *scheme_make_named_file_input_port(FILE *fp, const char *filename);
Scheme_Object *scheme_make_file_output_port(FILE *fp);
Scheme_Object *scheme_make_string_input_port(const char *str);
Scheme_Object *scheme_make_sized_string_input_port(const char *str, long len);
Scheme_Object *scheme_make_string_output_port();
char *scheme_get_string_output(Scheme_Object *);
char *scheme_get_sized_string_output(Scheme_Object *, int *len);
void scheme_pipe(Scheme_Object **write, Scheme_Object **read);
int scheme_file_exists(char *filename);
int scheme_directory_exists(char *dirname);
char *scheme_expand_filename(char* filename, int ilen, char *errorin, int *ex);
char *scheme_getcwd(char *buf, int buflen, int *actlen, int noexn);
int scheme_setcwd(char *buf, int noexn);
char *scheme_getdrive(void);
Scheme_Object *scheme_split_pathname(int argc, Scheme_Object **argv);
Scheme_Object *scheme_build_pathname(int argc, Scheme_Object **argv);
void *scheme_alloc_fdset_array(int count, int permanent);
void *scheme_init_fdset_array(void *fdarray, int count);
void *scheme_get_fdset(void *fdarray, int pos);
void scheme_fdzero(void *fd);
void scheme_fdset(void *fd, int pos);
void scheme_fdclr(void *fd, int pos);
int scheme_fdisset(void *fd, int pos);
/* environment */
void scheme_add_global(const char *name, Scheme_Object *val, Scheme_Env *env);
void scheme_add_global_constant(const char *name, Scheme_Object *v, Scheme_Env *env);
void scheme_add_global_keyword(const char *name, Scheme_Object *v, Scheme_Env *env);
void scheme_remove_global(const char *name, Scheme_Env *env);
void scheme_remove_global_constant(const char *name, Scheme_Env *env);
void scheme_add_global_symbol(Scheme_Object *name, Scheme_Object *val,
Scheme_Env *env);
void scheme_remove_global_symbol(Scheme_Object *name, Scheme_Env *env);
void scheme_add_global_constant_symbol(Scheme_Object *name, Scheme_Object *v, Scheme_Env *env);
void scheme_constant(Scheme_Object *sym, Scheme_Env *env);
void scheme_set_keyword(Scheme_Object *name, Scheme_Env *env);
Scheme_Object *scheme_make_envunbox(Scheme_Object *value);
Scheme_Object *scheme_lookup_global(Scheme_Object *symbol, Scheme_Env *env);
Scheme_Bucket *scheme_global_bucket(Scheme_Object *symbol, Scheme_Env *env);
void scheme_set_global_bucket(char *proc, Scheme_Bucket *var, Scheme_Object *val,
int set_undef);
/* Symbols */
Scheme_Object *scheme_intern_symbol(const char *name);
Scheme_Object *scheme_intern_exact_symbol(const char *name, int len);
Scheme_Object *scheme_make_symbol(const char *name); /* Make uninterned */
Scheme_Object *scheme_make_exact_symbol(const char *name, int len); /* Exact case */
const char *scheme_symbol_name(Scheme_Object *sym);
const char *scheme_symbol_name_and_size(Scheme_Object *sym, int *l, int flags);
/* Type Symbols */
Scheme_Object *scheme_intern_type_symbol(Scheme_Object *sym);
Scheme_Object *scheme_make_type_symbol(Scheme_Object *sym);/*Make uninterned */
/* Structures */
Scheme_Object **scheme_make_struct_values(Scheme_Object *struct_type,
Scheme_Object **names,
int count, int flags);
Scheme_Object **scheme_make_struct_names(Scheme_Object *base,
Scheme_Object *field_names,
int flags, int *count_out);
Scheme_Object *scheme_make_struct_type(Scheme_Object *base,
Scheme_Object *parent,
int num_fields);
Scheme_Object *scheme_make_struct_instance(Scheme_Object *stype,
int argc,
Scheme_Object **argv);
int scheme_is_struct_instance(Scheme_Object *type, Scheme_Object *v);
#ifndef NO_OBJECT_SYSTEM
/* Objects */
Scheme_Object *scheme_make_class(const char *name, Scheme_Object *sup,
Scheme_Method_Prim *init, int num_methods);
void scheme_add_method(Scheme_Object *cl, const char *name,
Scheme_Method_Prim *f);
void scheme_add_method_w_arity(Scheme_Object *cl, const char *name,
Scheme_Method_Prim *f, int mina, int maxa);
void scheme_made_class(Scheme_Object *cl);
Scheme_Object *scheme_make_object(Scheme_Object *sclass,
int argc, Scheme_Object **argv);
Scheme_Object *scheme_make_uninited_object(Scheme_Object *sclass);
Scheme_Object *scheme_find_ivar(Scheme_Object *obj, Scheme_Object *sym, int force);
int scheme_is_subclass(Scheme_Object *sub, Scheme_Object *parent);
int scheme_is_implementation(Scheme_Object *cl, Scheme_Object *in);
int scheme_is_interface_extension(Scheme_Object *n1, Scheme_Object *n2);
int scheme_is_a(Scheme_Object *obj, Scheme_Object *sclass);
const char *scheme_get_class_name(Scheme_Object *cl, int *len);
const char *scheme_get_interface_name(Scheme_Object *cl, int *len);
struct Scheme_Class_Assembly *scheme_make_class_assembly(const char *name, int n_interfaces,
int n_public, Scheme_Object **names,
int n_inh, Scheme_Object **inheritd,
int n_ren, Scheme_Object **renames,
int mina, int maxa,
Scheme_Instance_Init_Proc *initproc);
Scheme_Object *scheme_create_class(struct Scheme_Class_Assembly *a, void *data,
Scheme_Object *super, Scheme_Object **interfaces);
struct Scheme_Interface_Assembly *scheme_make_interface_assembly(const char *name, int n_supers,
int n_names,
Scheme_Object **names);
Scheme_Object *scheme_create_interface(struct Scheme_Interface_Assembly *a,
Scheme_Object **supers);
Scheme_Object *scheme_apply_generic_data(Scheme_Object *gdata,
Scheme_Object *sobj, int force);
Scheme_Object *scheme_get_generic_data(Scheme_Object *cl,
Scheme_Object *name);
#endif
/* Units */
Scheme_Object *scheme_invoke_unit(Scheme_Object *functor, int num_ins,
Scheme_Object **ins, Scheme_Object **anchors,
int open, const char *name, int tail, int multi);
Scheme_Object *scheme_assemble_compound_unit(Scheme_Object *imports,
Scheme_Object *links,
Scheme_Object *exports);
Scheme_Object *scheme_make_compound_unit(Scheme_Object *data_in,
Scheme_Object **subs_in);
const char *scheme_get_unit_name(Scheme_Object *cl, int *len);
/* Misc */
int scheme_eq(Scheme_Object *obj1, Scheme_Object *obj2);
int scheme_eqv(Scheme_Object *obj1, Scheme_Object *obj2);
int scheme_equal(Scheme_Object *obj1, Scheme_Object *obj2);
Scheme_Object *scheme_build_list(int argc, Scheme_Object **argv);
int scheme_list_length(Scheme_Object *list);
int scheme_proper_list_length(Scheme_Object *list);
Scheme_Object *scheme_alloc_list(int size);
Scheme_Object *scheme_map_1(Scheme_Object *(*f)(Scheme_Object*),
Scheme_Object *l);
Scheme_Object *scheme_car(Scheme_Object *pair);
Scheme_Object *scheme_cdr(Scheme_Object *pair);
Scheme_Object *scheme_cadr(Scheme_Object *pair);
Scheme_Object *scheme_caddr(Scheme_Object *pair);
Scheme_Object *scheme_vector_to_list(Scheme_Object *vec);
Scheme_Object *scheme_list_to_vector(Scheme_Object *list);
Scheme_Object *scheme_append(Scheme_Object *lstx, Scheme_Object *lsty);
Scheme_Object *scheme_box(Scheme_Object *v);
Scheme_Object *scheme_unbox(Scheme_Object *obj);
void scheme_set_box(Scheme_Object *b, Scheme_Object *v);
Scheme_Object *scheme_make_weak_box(Scheme_Object *v);
Scheme_Object *scheme_load(const char *file);
Scheme_Object *scheme_load_extension(const char *filename, Scheme_Env *env);
void scheme_register_extension_global(void *ptr, long size);
long scheme_get_milliseconds(void);
long scheme_get_process_milliseconds(void);
void scheme_rep(void);
char *scheme_banner(void);
char *scheme_version(void);
int scheme_check_proc_arity(const char *where, int a,
int which, int argc, Scheme_Object **argv);
void scheme_secure_exceptions(Scheme_Env *env);
char *scheme_make_provided_string(Scheme_Object *o, int count, int *len);
char *scheme_make_args_string(char *s, int which, int argc, Scheme_Object **argv);
void scheme_no_dumps(char *why);
const char *scheme_system_library_subpath();