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revision 1.3 by masse, Thu Mar 7 01:21:07 2002 UTC revision 1.5 by masse, Fri Mar 8 16:09:30 2002 UTC
# Line 1  Line 1 
1    /*
2        stack - an interactive interpreter for a stack-based language
3        Copyright (C) 2002  Mats Alritzson and Teddy Hogeborn
4    
5        This program is free software; you can redistribute it and/or modify
6        it under the terms of the GNU General Public License as published by
7        the Free Software Foundation; either version 2 of the License, or
8        (at your option) any later version.
9    
10        This program is distributed in the hope that it will be useful,
11        but WITHOUT ANY WARRANTY; without even the implied warranty of
12        MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13        GNU General Public License for more details.
14    
15        You should have received a copy of the GNU General Public License
16        along with this program; if not, write to the Free Software
17        Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
18    
19        Authors: Mats Alritzson <masse@fukt.bth.se>
20                 Teddy Hogeborn <teddy@fukt.bth.se>
21    */
22    
23  #define HASHTBLSIZE 2048  #define HASHTBLSIZE 2048
24    
# Line 7  Line 28 
28  typedef struct {  typedef struct {
29    enum {    enum {
30      integer,      integer,
31        tfloat,
32      string,      string,
33      func,                       /* Function pointer */      func,                       /* Function pointer */
34      symb,      symb,
35      list      list
36    } type:3;                     /* Type of stack element */    } type:4;                     /* Type of stack element */
37    
38    int gc_garb:1;    int gc_garb:1;
39    
40    union {    union {
41      void *ptr;                  /* Pointer to the content */      void *ptr;                  /* Pointer to the content */
42      int val;                    /* ...or an integer */      int i;                      /* ...or an integer */
43        float f;
44    } content;                    /* Stores a pointer or an integer */    } content;                    /* Stores a pointer or an integer */
45    
46  } value;  } value;
# Line 54  typedef struct { Line 77  typedef struct {
77    int err;                      /* Error flag */    int err;                      /* Error flag */
78    char *in_string;              /* Input pending to be read */    char *in_string;              /* Input pending to be read */
79    char *free_string;            /* Free this string when all input is    char *free_string;            /* Free this string when all input is
80                                     read from in_string */                                     read from in_string */
81    FILE *inputstream;            /* stdin or a file, most likely */    FILE *inputstream;            /* stdin or a file, most likely */
82    int interactive;              /* print prompts, stack, etc */    int interactive;              /* print prompts, stack, etc */
83  } environment;  } environment;
# Line 72  void gc_mark(value*); Line 95  void gc_mark(value*);
95  extern void gc_init(environment*);  extern void gc_init(environment*);
96  void push_val(environment*, value*);  void push_val(environment*, value*);
97  void push_int(environment*, int);  void push_int(environment*, int);
98    void push_float(environment*, float);
99  void push_cstring(environment*, const char*);  void push_cstring(environment*, const char*);
100  char *mangle_str(const char*);  char *mangle_str(const char*);
101  extern void mangle(environment*);  extern void mangle(environment*);
# Line 117  extern void sx_72656164(environment*); Line 141  extern void sx_72656164(environment*);
141  extern void foreach(environment*);  extern void foreach(environment*);
142  void protect(environment*, value*);  void protect(environment*, value*);
143  void unprotect(environment*);  void unprotect(environment*);
144    extern void copying(environment*);
145    extern void warranty(environment*);
146    extern void sx_2a(environment*);
147    extern void sx_2f(environment*);
148    extern void mod(environment*);
149    extern void sx_3c(environment*);
150    extern void sx_3c3d(environment*);
151    extern void sx_3e3d(environment*);
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