/[cvs]/stack/stack.h
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revision 1.12 by masse, Tue Mar 12 14:06:05 2002 UTC revision 1.17 by teddy, Wed Mar 20 05:29:29 2002 UTC
# Line 25  Line 25 
25  /* First, define some types. */  /* First, define some types. */
26    
27  struct cons_struct;  struct cons_struct;
28    struct symbol_struct;
29    
30  /* A value of some type */  /* A value of some type */
31  typedef struct {  typedef struct {
32    enum {    enum {
33        empty,                      /* The empty list */
34      integer,      integer,
35      tfloat,      tfloat,
36      string,      string,
# Line 48  typedef struct { Line 50  typedef struct {
50    union {    union {
51      void *ptr;                  /* Pointer to the content */      void *ptr;                  /* Pointer to the content */
52      struct cons_struct *c;      /* ...or a pointer to a cons cell */      struct cons_struct *c;      /* ...or a pointer to a cons cell */
53        struct symbol_struct *sym;  /* ...or a pointer to a symbol */
54      int i;                      /* ...or an integer */      int i;                      /* ...or an integer */
55      float f;                    /* ...or a floating point number */      float f;                    /* ...or a floating point number */
56    } content;                    /* Stores a pointer or an integer */    } content;                    /* Stores a pointer or an integer */
# Line 65  typedef struct stackitem_struct Line 68  typedef struct stackitem_struct
68  typedef struct cons_struct {    /* A pair of two values */  typedef struct cons_struct {    /* A pair of two values */
69    value *car;    value *car;
70    value *cdr;    value *cdr;
71  } cons;  } pair;
72    
73  /* A symbol with a name and possible value */  /* A symbol with a name and possible value */
74  /* (These do not need reference counters, they are kept unique by  /* (These do not need reference counters, they are kept unique by
# Line 82  typedef symbol *hashtbl[HASHTBLSIZE]; /* Line 85  typedef symbol *hashtbl[HASHTBLSIZE]; /*
85  /* An environment; gives access to the stack and a hash table of  /* An environment; gives access to the stack and a hash table of
86     defined symbols */     defined symbols */
87  typedef struct {  typedef struct {
   stackitem *gc_ref;  
   int gc_limit, gc_count;  
   
88    value *head;                  /* Head of the stack */    value *head;                  /* Head of the stack */
89    hashtbl symbols;              /* Hash table of all variable bindings */    hashtbl symbols;              /* Hash table of all variable bindings */
90    int err;                      /* Error flag */    int err;                      /* Error flag */
# Line 93  typedef struct { Line 93  typedef struct {
93                                     read from in_string */                                     read from in_string */
94    FILE *inputstream;            /* stdin or a file, most likely */    FILE *inputstream;            /* stdin or a file, most likely */
95    int interactive;              /* print prompts, stack, etc */    int interactive;              /* print prompts, stack, etc */
96    
97      /* Garbage Collector stuff*/
98      stackitem *gc_ref;            /* Stack of all allocated values */
99      int gc_limit;                 /* Run GC when this much is allocated */
100      int gc_count;                 /* Amount currently allocated */
101  } environment;  } environment;
102    
103  /* A type for pointers to external functions */  /* A type for pointers to external functions */
# Line 105  extern void toss(environment*); Line 110  extern void toss(environment*);
110  symbol **hash(hashtbl, const char*);  symbol **hash(hashtbl, const char*);
111  value* new_val(environment*);  value* new_val(environment*);
112  void gc_mark(value*);  void gc_mark(value*);
113  void gc_maybe(environment *env);  void gc_maybe(environment*);
114  extern void gc_init(environment*);  extern void gc_init(environment*);
115    void protect(value*);
116    void unprotect(value*);
117  void push_val(environment*, value*);  void push_val(environment*, value*);
118  void push_int(environment*, int);  void push_int(environment*, int);
119  void push_float(environment*, float);  void push_float(environment*, float);
# Line 116  extern void mangle(environment*); Line 123  extern void mangle(environment*);
123  void push_sym(environment*, const char*);  void push_sym(environment*, const char*);
124  extern void nl();  extern void nl();
125  extern void type(environment*);  extern void type(environment*);
126  void print_h(value*, int);  void print_val(value*, int, stackitem*);
127  extern void print_(environment*);  extern void print_(environment*);
128  extern void print(environment*);  extern void print(environment*);
129  extern void princ_(environment*);  extern void princ_(environment*);
# Line 143  extern void errn(environment*); Line 150  extern void errn(environment*);
150  extern void sx_2b(environment*);  extern void sx_2b(environment*);
151  extern void sx_2d(environment*);  extern void sx_2d(environment*);
152  extern void sx_3e(environment*);  extern void sx_3e(environment*);
153    extern void sx_3c(environment*);
154    extern void sx_3c3d(environment*);
155    extern void sx_3e3d(environment*);
156  value *copy_val(environment*, value*);  value *copy_val(environment*, value*);
157  extern void sx_647570(environment*);  extern void sx_647570(environment*);
158  extern void sx_6966(environment*);  extern void sx_6966(environment*);
159  extern void ifelse(environment*);  extern void ifelse(environment*);
160    extern void sx_656c7365(environment*);
161    extern void then(environment*);
162  extern void sx_7768696c65(environment*);  extern void sx_7768696c65(environment*);
163  extern void sx_666f72(environment*);  extern void sx_666f72(environment*);
164    extern void foreach(environment*);
165  extern void to(environment*);  extern void to(environment*);
166  extern void readline(environment*);  extern void readline(environment*);
167  extern void sx_72656164(environment*);  extern void sx_72656164(environment*);
168  extern void foreach(environment*);  extern void beep(environment*);
169  void protect(value*);  extern void sx_77616974(environment*);
 void unprotect(value*);  
170  extern void copying(environment*);  extern void copying(environment*);
171  extern void warranty(environment*);  extern void warranty(environment*);
172  extern void sx_2a(environment*);  extern void sx_2a(environment*);
173  extern void sx_2f(environment*);  extern void sx_2f(environment*);
174  extern void mod(environment*);  extern void mod(environment*);
 extern void sx_3c(environment*);  
 extern void sx_3c3d(environment*);  
 extern void sx_3e3d(environment*);  
175  extern void sx_646976(environment*);  extern void sx_646976(environment*);
176    extern void setcar(environment*);
177    extern void setcdr(environment*);
178    extern void car(environment*);
179    extern void cdr(environment*);
180    extern void cons(environment*);
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