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/* |
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* µscheme |
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* |
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* Copyright (C) 2015 Marc Alexander Lehmann <uscheme@schmorp.de> |
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* do as you want with this, attribution appreciated. |
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*/ |
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|
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/* SCHEME.H */ |
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|
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#ifndef SCHEME_H |
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#define SCHEME_H |
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|
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#include <inttypes.h> |
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#include <stdio.h> |
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|
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#ifdef __cplusplus |
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extern "C" |
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{ |
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#endif |
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|
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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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|
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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 static |
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|
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#if USE_NO_FEATURES |
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# define USE_MULTIPLICITY 0 |
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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_PORTS 1 |
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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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# define USE_REAL 0 |
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# define USE_ERROR_CHECKING 0 |
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# define USE_PRINTF 0 |
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#endif |
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|
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/* |
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* Define: much slower, but somewhat smaller evaluation stack implemention, use more memory |
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* Undefined: faster, somewhat bigger implementation, uses less memory at runtime |
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*/ |
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/*#define USE_SCHEME_STACK*/ |
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|
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#ifndef USE_MULTIPLICITY |
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# define USE_MULTIPLICITY 1 |
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#endif |
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|
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#ifndef USE_REAL |
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# define USE_REAL 1 |
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#endif |
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|
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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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|
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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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|
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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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|
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#ifndef USE_PORTS /* Enable ports */ |
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# define USE_PORTS 1 |
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#endif |
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|
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#ifndef USE_STRING_PORTS /* Enable string ports */ |
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# define USE_STRING_PORTS USE_PORTS |
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#endif |
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|
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#ifndef USE_TRACING |
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# define USE_TRACING 1 |
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#endif |
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|
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#ifndef USE_PLIST |
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# define USE_PLIST 0 |
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#endif |
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|
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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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|
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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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|
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#ifndef USE_ERROR_CHECKING |
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# define USE_ERROR_CHECKING 1 |
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#endif |
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|
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#ifndef USE_PRINTF |
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# define USE_PRINTF 1 |
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#endif |
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|
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#ifndef USE_STRLWR |
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# define USE_STRLWR 1 |
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#endif |
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|
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#ifndef INLINE |
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# define INLINE inline |
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#endif |
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|
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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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|
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#if USE_MULTIPLICITY |
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# define SCHEME_V sc |
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# define SCHEME_P scheme *SCHEME_V |
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# define SCHEME_P_ SCHEME_P, |
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# define SCHEME_A SCHEME_V |
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# define SCHEME_A_ SCHEME_A, |
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#else |
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# define SCHEME_V (&sc) |
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# define SCHEME_P |
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# define SCHEME_P_ |
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# define SCHEME_A |
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# define SCHEME_A_ |
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#endif |
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|
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typedef struct scheme scheme; |
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typedef struct cell *pointer; |
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|
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typedef void *(*func_alloc) (size_t); |
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typedef void (*func_dealloc) (void *); |
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|
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typedef long IVALUE; /* this is not used consistently yet */ |
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|
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#if USE_REAL |
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typedef double RVALUE; |
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# define num_is_fixnum(n) (n).is_fixnum |
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# define num_set_fixnum(n,f) (n).is_fixnum = (f) |
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# define num_ivalue(n) (n).value.ivalue |
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# define num_rvalue(n) (n).value.rvalue |
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# define num_set_ivalue(n,i) (n).value.ivalue = (i) |
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# define num_set_rvalue(n,r) (n).value.rvalue = (r) |
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#else |
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typedef long RVALUE; |
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# define num_is_fixnum(n) 1 |
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# define num_set_fixnum(n,f) 0 |
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# define num_ivalue(n) (n).value.ivalue |
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# define num_rvalue(n) (n).value.ivalue |
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# define num_set_ivalue(n,i) (n).value.ivalue = (i) |
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# define num_set_rvalue(n,r) (n).value.ivalue = (r) |
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#endif |
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|
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/* num, for generic arithmetic */ |
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typedef struct num |
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{ |
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union |
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{ |
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IVALUE ivalue; |
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#if USE_REAL |
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RVALUE rvalue; |
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#endif |
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} value; |
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#if USE_REAL |
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char is_fixnum; |
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#endif |
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} num; |
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|
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/* Used for documentation purposes, to signal functions in 'interface' */ |
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#define INTERFACE static |
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|
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SCHEME_EXPORT scheme *scheme_init_new (); |
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SCHEME_EXPORT int scheme_init (SCHEME_P); |
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SCHEME_EXPORT void scheme_deinit (SCHEME_P); |
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void scheme_set_input_port_file (SCHEME_P_ int fin); |
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void scheme_set_input_port_string (SCHEME_P_ char *start, char *past_the_end); |
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SCHEME_EXPORT void scheme_set_output_port_file (SCHEME_P_ int fin); |
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void scheme_set_output_port_string (SCHEME_P_ char *start, char *past_the_end); |
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SCHEME_EXPORT void scheme_load_file (SCHEME_P_ int fin); |
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SCHEME_EXPORT void scheme_load_named_file (SCHEME_P_ int fin, const char *filename); |
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SCHEME_EXPORT void scheme_load_string (SCHEME_P_ const char *cmd); |
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SCHEME_EXPORT pointer scheme_apply0 (SCHEME_P_ const char *procname); |
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SCHEME_EXPORT pointer scheme_call (SCHEME_P_ pointer func, pointer args); |
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SCHEME_EXPORT pointer scheme_eval (SCHEME_P_ pointer obj); |
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void scheme_set_external_data (SCHEME_P_ void *p); |
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SCHEME_EXPORT void scheme_define (SCHEME_P_ pointer env, pointer symbol, pointer value); |
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|
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typedef pointer (*foreign_func) (SCHEME_P_ pointer); |
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|
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pointer xcons (SCHEME_P_ pointer a, pointer b, int immutable); |
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INTERFACE pointer mk_integer (SCHEME_P_ long num); |
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INTERFACE pointer mk_real (SCHEME_P_ RVALUE num); |
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INTERFACE pointer mk_symbol (SCHEME_P_ const char *name); |
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INTERFACE pointer gensym (SCHEME_P); |
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INTERFACE pointer mk_string (SCHEME_P_ const char *str); |
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INTERFACE pointer mk_counted_string (SCHEME_P_ const char *str, uint32_t len); |
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INTERFACE pointer mk_empty_string (SCHEME_P_ uint32_t len, char fill); |
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INTERFACE pointer mk_character (SCHEME_P_ int c); |
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INTERFACE pointer mk_foreign_func (SCHEME_P_ foreign_func f); |
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INTERFACE void putstr (SCHEME_P_ const char *s); |
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INTERFACE int list_length (SCHEME_P_ pointer a); |
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INTERFACE int eqv (pointer a, pointer b); |
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|
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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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} scheme_registerable; |
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|
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void scheme_register_foreign_func_list (SCHEME_P_ scheme_registerable * list, int n); |
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#endif /* !STANDALONE */ |
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|
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#ifdef __cplusplus |
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} |
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#endif |
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|
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#endif |
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|
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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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*/ |
