/[cvs]/stack/stack.h
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revision 1.4 by teddy, Thu Mar 7 03:28:29 2002 UTC revision 1.22 by masse, Mon Aug 4 11:22:02 2003 UTC
# Line 22  Line 22 
22    
23  #define HASHTBLSIZE 2048  #define HASHTBLSIZE 2048
24    
25    #define CAR(X) ((X)->content.c->car)
26    #define CDR(X) ((X)->content.c->cdr)
27    
28    /* printf, sscanf, fgets, fprintf, fopen, perror */
29    #include <stdio.h>
30    /* exit, EXIT_SUCCESS, malloc, free */
31    #include <stdlib.h>
32    /* NULL */
33    #include <stddef.h>
34    /* dlopen, dlsym, dlerror */
35    #include <dlfcn.h>
36    /* strcmp, strcpy, strlen, strcat, strdup */
37    #include <string.h>
38    /* getopt, STDIN_FILENO, STDOUT_FILENO, usleep */
39    #include <unistd.h>
40    /* EX_NOINPUT, EX_USAGE */
41    #include <sysexits.h>
42    /* assert */
43    #include <assert.h>
44    
45    #ifdef __linux__
46    /* mtrace, muntrace */
47    #include <mcheck.h>
48    /* ioctl */
49    #include <sys/ioctl.h>
50    /* KDMKTONE */
51    #include <linux/kd.h>
52    #endif /* __linux__ */
53    
54    
55    
56  /* First, define some types. */  /* First, define some types. */
57    
58    struct cons_struct;
59    struct symbol_struct;
60    
61  /* A value of some type */  /* A value of some type */
62  typedef struct {  typedef struct {
63    enum {    enum {
64        empty,                      /* The empty list */
65      integer,      integer,
66        tfloat,
67      string,      string,
68      func,                       /* Function pointer */      func,                       /* Function pointer */
69      symb,      symb,                       /* Symbol */
70      list      tcons,                      /* A pair of two values */
71    } type:3;                     /* Type of stack element */      port                        /* An I/O port */
72      } type:4;                     /* Type of stack element */
73    
74    int gc_garb:1;    union {
75        struct {
76          unsigned int mark:1;      /* Used internally in the GC */
77          unsigned int protect:1;   /* Protect from GC */
78        } flag;
79        unsigned int no_gc:2;       /* Both flags as one integer */
80      } gc;                         /* Garbage collector stuff */
81    
82    union {    union {
83      void *ptr;                  /* Pointer to the content */      void *ptr;                  /* Pointer to the content */
84      int val;                    /* ...or an integer */      struct cons_struct *c;      /* ...or a pointer to a cons cell */
85        struct symbol_struct *sym;  /* ...or a pointer to a symbol */
86        FILE *p;                    /* ...or an I/O stream */
87        int i;                      /* ...or an integer */
88        float f;                    /* ...or a floating point number */
89    } content;                    /* Stores a pointer or an integer */    } content;                    /* Stores a pointer or an integer */
90    
91  } value;  } value;
92    
93    /* An item (value) on a stack */
94    typedef struct stackitem_struct
95    {
96      value *item;                 /* The value on the stack */
97                                   /* (This is never NULL) */
98      struct stackitem_struct *next; /* Next item */
99    } stackitem;
100    
101    typedef struct cons_struct {    /* A pair of two values */
102      value *car;
103      value *cdr;
104    } pair;
105    
106  /* A symbol with a name and possible value */  /* A symbol with a name and possible value */
107  /* (These do not need reference counters, they are kept unique by  /* (These do not need reference counters, they are kept unique by
108     hashing.) */     hashing.) */
# Line 55  typedef struct symbol_struct { Line 115  typedef struct symbol_struct {
115  /* A type for a hash table for symbols */  /* A type for a hash table for symbols */
116  typedef symbol *hashtbl[HASHTBLSIZE]; /* Hash table declaration */  typedef symbol *hashtbl[HASHTBLSIZE]; /* Hash table declaration */
117    
 /* An item (value) on a stack */  
 typedef struct stackitem_struct  
 {  
   value *item;                  /* The value on the stack */  
                                 /* (This is never NULL) */  
   struct stackitem_struct *next; /* Next item */  
 } stackitem;  
   
118  /* An environment; gives access to the stack and a hash table of  /* An environment; gives access to the stack and a hash table of
119     defined symbols */     defined symbols */
120  typedef struct {  typedef struct {
121    stackitem *gc_ref;    value *head;                  /* Head of the stack */
   stackitem *gc_protect;  
   int gc_limit, gc_count;  
   
   stackitem *head;              /* Head of the stack */  
122    hashtbl symbols;              /* Hash table of all variable bindings */    hashtbl symbols;              /* Hash table of all variable bindings */
123    int err;                      /* Error flag */    int err;                      /* Error flag */
124    char *in_string;              /* Input pending to be read */    char *in_string;              /* Input pending to be read */
# Line 78  typedef struct { Line 126  typedef struct {
126                                     read from in_string */                                     read from in_string */
127    FILE *inputstream;            /* stdin or a file, most likely */    FILE *inputstream;            /* stdin or a file, most likely */
128    int interactive;              /* print prompts, stack, etc */    int interactive;              /* print prompts, stack, etc */
129    
130      /* Garbage Collector stuff*/
131      stackitem *gc_ref;            /* Stack of all allocated values */
132      int gc_limit;                 /* Run GC when this much is allocated */
133      int gc_count;                 /* Amount currently allocated */
134  } environment;  } environment;
135    
136  /* A type for pointers to external functions */  /* A type for pointers to external functions */
# Line 90  extern void toss(environment*); Line 143  extern void toss(environment*);
143  symbol **hash(hashtbl, const char*);  symbol **hash(hashtbl, const char*);
144  value* new_val(environment*);  value* new_val(environment*);
145  void gc_mark(value*);  void gc_mark(value*);
146    void gc_maybe(environment*);
147  extern void gc_init(environment*);  extern void gc_init(environment*);
148    void protect(value*);
149    void unprotect(value*);
150  void push_val(environment*, value*);  void push_val(environment*, value*);
151  void push_int(environment*, int);  void push_int(environment*, int);
152    void push_float(environment*, float);
153  void push_cstring(environment*, const char*);  void push_cstring(environment*, const char*);
154  char *mangle_str(const char*);  char *mangle_str(const char*);
155  extern void mangle(environment*);  extern void mangle(environment*);
156  void push_sym(environment*, const char*);  void push_sym(environment*, const char*);
157  extern void nl();  extern void nl(environment*);
158    extern void nlport(environment*);
159  extern void type(environment*);  extern void type(environment*);
160  void print_h(stackitem*, int);  void print_val(environment *, value*, int, stackitem*, FILE*);
161  extern void print_(environment*);  extern void print_(environment*);
162  extern void print(environment*);  extern void print(environment*);
163  extern void princ_(environment*);  extern void princ_(environment*);
164  extern void princ(environment*);  extern void princ(environment*);
165  void print_st(stackitem*, long);  extern void printport_(environment*);
166    extern void printport(environment*);
167    extern void princport_(environment*);
168    extern void princport(environment*);
169    void print_st(environment*, value*, long);
170  extern void printstack(environment*);  extern void printstack(environment*);
171  extern void swap(environment*);  extern void swap(environment*);
172  extern void rot(environment*);  extern void rot(environment*);
# Line 126  extern void errn(environment*); Line 188  extern void errn(environment*);
188  extern void sx_2b(environment*);  extern void sx_2b(environment*);
189  extern void sx_2d(environment*);  extern void sx_2d(environment*);
190  extern void sx_3e(environment*);  extern void sx_3e(environment*);
191    extern void sx_3c(environment*);
192    extern void sx_3c3d(environment*);
193    extern void sx_3e3d(environment*);
194  value *copy_val(environment*, value*);  value *copy_val(environment*, value*);
195  extern void sx_647570(environment*);  extern void sx_647570(environment*);
196  extern void sx_6966(environment*);  extern void sx_6966(environment*);
197  extern void ifelse(environment*);  extern void ifelse(environment*);
198    extern void sx_656c7365(environment*);
199    extern void then(environment*);
200  extern void sx_7768696c65(environment*);  extern void sx_7768696c65(environment*);
201  extern void sx_666f72(environment*);  extern void sx_666f72(environment*);
202    extern void foreach(environment*);
203  extern void to(environment*);  extern void to(environment*);
204  extern void readline(environment*);  extern void readline(environment*);
205    extern void readlineport(environment*);
206    void readlinestream(environment*, FILE*);
207  extern void sx_72656164(environment*);  extern void sx_72656164(environment*);
208  extern void foreach(environment*);  extern void readport(environment*);
209  void protect(environment*, value*);  void readstream(environment*, FILE*);
210  void unprotect(environment*);  extern void beep(environment*);
211  extern void copying(environment *env);  extern void sx_77616974(environment*);
212  extern void warranty(environment *env);  extern void copying(environment*);
213    extern void warranty(environment*);
214    extern void sx_2a(environment*);
215    extern void sx_2f(environment*);
216    extern void mod(environment*);
217    extern void sx_646976(environment*);
218    extern void setcar(environment*);
219    extern void setcdr(environment*);
220    extern void car(environment*);
221    extern void cdr(environment*);
222    extern void cons(environment*);
223    extern void assq(environment*);
224    void assocgen(environment*, funcp);
225    extern void sx_646f(environment *);
226    extern void sx_6f70656e(environment*);
227    extern void sx_636c6f7365(environment*);
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