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56c36f2932
* tests/gpgscm/scheme-private.h (struct cell): Add 'foreign_object'.
(is_foreign_object): New prototype.
(get_foreign_object_{vtable,data}): Likewise.
* tests/gpgscm/scheme.c (enum scheme_types): New type.
(is_foreign_object): New function.
(get_foreign_object_{vtable,data}): Likewise.
(mk_foreign_object): Likewise.
(finalize_cell): Free foreign objects.
(atom2str): Pretty-print foreign objects.
(vtbl): Add new functions.
* tests/gpgscm/scheme.h (struct foreign_object_vtable): New type.
(mk_foreign_object): New prototype.
(struct scheme_interface): Add new functions.
Patch from Thomas Munro,
https://sourceforge.net/p/tinyscheme/patches/13/
Signed-off-by: Justus Winter <justus@g10code.com>
267 lines
7.4 KiB
C
267 lines
7.4 KiB
C
/* SCHEME.H */
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#ifndef _SCHEME_H
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#define _SCHEME_H
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#include <stdio.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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* Default values for #define'd symbols
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*/
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#ifndef STANDALONE /* If used as standalone interpreter */
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# define STANDALONE 1
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#endif
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#ifndef _MSC_VER
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# define USE_STRCASECMP 1
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# ifndef USE_STRLWR
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# define USE_STRLWR 1
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# endif
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# define SCHEME_EXPORT
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#else
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# define USE_STRCASECMP 0
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# define USE_STRLWR 0
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# ifdef _SCHEME_SOURCE
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# define SCHEME_EXPORT __declspec(dllexport)
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# else
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# define SCHEME_EXPORT __declspec(dllimport)
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# endif
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#endif
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#if USE_NO_FEATURES
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# define USE_MATH 0
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# define USE_CHAR_CLASSIFIERS 0
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# define USE_ASCII_NAMES 0
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# define USE_STRING_PORTS 0
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# define USE_ERROR_HOOK 0
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# define USE_TRACING 0
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# define USE_COLON_HOOK 0
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# define USE_DL 0
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# define USE_PLIST 0
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#endif
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/*
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* Leave it defined if you want continuations, and also for the Sharp Zaurus.
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* Undefine it if you only care about faster speed and not strict Scheme compatibility.
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*/
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#define USE_SCHEME_STACK
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#if USE_DL
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# define USE_INTERFACE 1
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#endif
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#ifndef USE_MATH /* If math support is needed */
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# define USE_MATH 1
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#endif
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#ifndef USE_CHAR_CLASSIFIERS /* If char classifiers are needed */
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# define USE_CHAR_CLASSIFIERS 1
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#endif
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#ifndef USE_ASCII_NAMES /* If extended escaped characters are needed */
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# define USE_ASCII_NAMES 1
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#endif
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#ifndef USE_STRING_PORTS /* Enable string ports */
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# define USE_STRING_PORTS 1
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#endif
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#ifndef USE_TRACING
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# define USE_TRACING 1
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#endif
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#ifndef USE_PLIST
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# define USE_PLIST 0
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#endif
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/* To force system errors through user-defined error handling (see *error-hook*) */
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#ifndef USE_ERROR_HOOK
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# define USE_ERROR_HOOK 1
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#endif
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#ifndef USE_COLON_HOOK /* Enable qualified qualifier */
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# define USE_COLON_HOOK 1
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#endif
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#ifndef USE_STRCASECMP /* stricmp for Unix */
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# define USE_STRCASECMP 0
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#endif
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#ifndef USE_STRLWR
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# define USE_STRLWR 1
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#endif
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#ifndef STDIO_ADDS_CR /* Define if DOS/Windows */
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# define STDIO_ADDS_CR 0
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#endif
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#ifndef INLINE
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# define INLINE
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#endif
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#ifndef USE_INTERFACE
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# define USE_INTERFACE 0
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#endif
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#ifndef SHOW_ERROR_LINE /* Show error line in file */
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# define SHOW_ERROR_LINE 1
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#endif
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typedef struct scheme scheme;
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typedef struct cell *pointer;
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typedef void * (*func_alloc)(size_t);
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typedef void (*func_dealloc)(void *);
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/* table of functions required for foreign objects */
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typedef struct foreign_object_vtable {
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void (*finalize)(scheme *sc, void *data);
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void (*to_string)(scheme *sc, char *out, size_t size, void *data);
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} foreign_object_vtable;
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/* num, for generic arithmetic */
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typedef struct num {
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char is_fixnum;
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union {
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long ivalue;
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double rvalue;
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} value;
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} num;
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SCHEME_EXPORT scheme *scheme_init_new(void);
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SCHEME_EXPORT scheme *scheme_init_new_custom_alloc(func_alloc malloc, func_dealloc free);
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SCHEME_EXPORT int scheme_init(scheme *sc);
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SCHEME_EXPORT int scheme_init_custom_alloc(scheme *sc, func_alloc, func_dealloc);
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SCHEME_EXPORT void scheme_deinit(scheme *sc);
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void scheme_set_input_port_file(scheme *sc, FILE *fin);
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void scheme_set_input_port_string(scheme *sc, char *start, char *past_the_end);
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SCHEME_EXPORT void scheme_set_output_port_file(scheme *sc, FILE *fin);
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void scheme_set_output_port_string(scheme *sc, char *start, char *past_the_end);
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SCHEME_EXPORT void scheme_load_file(scheme *sc, FILE *fin);
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SCHEME_EXPORT void scheme_load_named_file(scheme *sc, FILE *fin, const char *filename);
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SCHEME_EXPORT void scheme_load_string(scheme *sc, const char *cmd);
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SCHEME_EXPORT pointer scheme_apply0(scheme *sc, const char *procname);
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SCHEME_EXPORT pointer scheme_call(scheme *sc, pointer func, pointer args);
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SCHEME_EXPORT pointer scheme_eval(scheme *sc, pointer obj);
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void scheme_set_external_data(scheme *sc, void *p);
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SCHEME_EXPORT void scheme_define(scheme *sc, pointer env, pointer symbol, pointer value);
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typedef pointer (*foreign_func)(scheme *, pointer);
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pointer _cons(scheme *sc, pointer a, pointer b, int immutable);
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pointer mk_integer(scheme *sc, long num);
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pointer mk_real(scheme *sc, double num);
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pointer mk_symbol(scheme *sc, const char *name);
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pointer gensym(scheme *sc);
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pointer mk_string(scheme *sc, const char *str);
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pointer mk_counted_string(scheme *sc, const char *str, int len);
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pointer mk_empty_string(scheme *sc, int len, char fill);
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pointer mk_character(scheme *sc, int c);
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pointer mk_foreign_func(scheme *sc, foreign_func f);
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pointer mk_foreign_object(scheme *sc, const foreign_object_vtable *vtable, void *data);
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void putstr(scheme *sc, const char *s);
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int list_length(scheme *sc, pointer a);
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int eqv(pointer a, pointer b);
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#if USE_INTERFACE
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struct scheme_interface {
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void (*scheme_define)(scheme *sc, pointer env, pointer symbol, pointer value);
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pointer (*cons)(scheme *sc, pointer a, pointer b);
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pointer (*immutable_cons)(scheme *sc, pointer a, pointer b);
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pointer (*reserve_cells)(scheme *sc, int n);
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pointer (*mk_integer)(scheme *sc, long num);
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pointer (*mk_real)(scheme *sc, double num);
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pointer (*mk_symbol)(scheme *sc, const char *name);
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pointer (*gensym)(scheme *sc);
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pointer (*mk_string)(scheme *sc, const char *str);
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pointer (*mk_counted_string)(scheme *sc, const char *str, int len);
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pointer (*mk_character)(scheme *sc, int c);
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pointer (*mk_vector)(scheme *sc, int len);
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pointer (*mk_foreign_func)(scheme *sc, foreign_func f);
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pointer (*mk_foreign_object)(scheme *sc, const foreign_object_vtable *vtable, void *data);
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const foreign_object_vtable *(*get_foreign_object_vtable)(pointer p);
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void *(*get_foreign_object_data)(pointer p);
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void (*putstr)(scheme *sc, const char *s);
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void (*putcharacter)(scheme *sc, int c);
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int (*is_string)(pointer p);
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char *(*string_value)(pointer p);
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int (*is_number)(pointer p);
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num (*nvalue)(pointer p);
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long (*ivalue)(pointer p);
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double (*rvalue)(pointer p);
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int (*is_integer)(pointer p);
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int (*is_real)(pointer p);
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int (*is_character)(pointer p);
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long (*charvalue)(pointer p);
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int (*is_list)(scheme *sc, pointer p);
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int (*is_vector)(pointer p);
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int (*list_length)(scheme *sc, pointer vec);
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long (*vector_length)(pointer vec);
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void (*fill_vector)(pointer vec, pointer elem);
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pointer (*vector_elem)(pointer vec, int ielem);
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pointer (*set_vector_elem)(pointer vec, int ielem, pointer newel);
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int (*is_port)(pointer p);
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int (*is_pair)(pointer p);
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pointer (*pair_car)(pointer p);
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pointer (*pair_cdr)(pointer p);
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pointer (*set_car)(pointer p, pointer q);
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pointer (*set_cdr)(pointer p, pointer q);
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int (*is_symbol)(pointer p);
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char *(*symname)(pointer p);
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int (*is_syntax)(pointer p);
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int (*is_proc)(pointer p);
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int (*is_foreign)(pointer p);
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char *(*syntaxname)(pointer p);
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int (*is_closure)(pointer p);
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int (*is_macro)(pointer p);
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pointer (*closure_code)(pointer p);
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pointer (*closure_env)(pointer p);
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int (*is_continuation)(pointer p);
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int (*is_promise)(pointer p);
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int (*is_environment)(pointer p);
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int (*is_immutable)(pointer p);
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void (*setimmutable)(pointer p);
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void (*load_file)(scheme *sc, FILE *fin);
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void (*load_string)(scheme *sc, const char *input);
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pointer (*mk_port_from_file)(scheme *sc, FILE *f, int kind);
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};
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#endif
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#if !STANDALONE
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typedef struct scheme_registerable
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{
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foreign_func f;
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const char * name;
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}
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scheme_registerable;
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void scheme_register_foreign_func_list(scheme * sc,
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scheme_registerable * list,
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int n);
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#endif /* !STANDALONE */
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#ifdef __cplusplus
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}
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#endif
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#endif
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/*
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Local variables:
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c-file-style: "k&r"
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End:
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*/
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