source: abuse/trunk/src/lisp/lisp.h @ 486

Last change on this file since 486 was 486, checked in by Sam Hocevar, 11 years ago

lisp: implement LispNumber::Create.

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File size: 6.1 KB
Line 
1/*
2 *  Abuse - dark 2D side-scrolling platform game
3 *  Copyright (c) 1995 Crack dot Com
4 *
5 *  This software was released into the Public Domain. As with most public
6 *  domain software, no warranty is made or implied by Crack dot Com or
7 *  Jonathan Clark.
8 */
9
10#ifndef __LISP_HPP_
11#define __LISP_HPP_
12
13#include <stdint.h>
14
15#include "lisp_opt.h"
16
17#ifdef L_PROFILE
18#include "timing.h"
19#endif
20
21#define Cell void
22#define MAX_LISP_TOKEN_LEN 200
23enum { PERM_SPACE,
24       TMP_SPACE,
25       USER_SPACE,
26       GC_SPACE };
27
28#define FIXED_TRIG_SIZE 360               // 360 degrees stored in table
29extern int32_t sin_table[FIXED_TRIG_SIZE];   // this should be filled in by external module
30#define TBS 1662                          // atan table granularity
31extern uint16_t atan_table[TBS];
32#define NILP(x) (x==NULL)
33#define DEFINEDP(x) (x!=l_undefined)
34class bFILE;
35extern int current_space;
36extern bFILE *current_print_file;
37
38
39enum { L_BAD_CELL,   // error catching type
40       L_CONS_CELL, L_NUMBER, L_SYMBOL,     L_SYS_FUNCTION, L_USER_FUNCTION,
41       L_STRING, L_CHARACTER, L_C_FUNCTION, L_C_BOOL,       L_L_FUNCTION, L_POINTER,
42       L_OBJECT_VAR, L_1D_ARRAY,
43       L_FIXED_POINT, L_COLLECTED_OBJECT };
44
45typedef uint32_t ltype;    // make sure structures aren't packed differently on various compiler
46                       // and sure that word, etc are word aligned
47
48struct LispObject
49{
50    ltype type;
51};
52
53struct LispObjectVar : LispObject
54{
55    long number;
56};
57
58struct LispList : LispObject
59{
60    void *cdr, *car;
61};
62
63struct LispNumber : LispObject
64{
65    static LispNumber *Create(long num);
66
67    long num;
68};
69
70struct LispRedirect : LispObject
71{
72    void *new_reference;
73};
74
75struct LispString : LispObject
76{
77};
78
79struct LispSymbol : LispObject
80{
81    static LispSymbol *Find(char const *name);
82    static LispSymbol *FindOrCreate(char const *name);
83
84    void *GetName();
85    void *GetFunction();
86    void *GetValue();
87
88    void SetFunction(void *fun);
89    void SetValue(void *value);
90    void SetNumber(long num);
91
92#ifdef L_PROFILE
93    float time_taken;
94#endif
95    void *value, *function;
96    LispString *name;
97    LispSymbol *left, *right; // tree structure
98};
99
100struct LispSysFunction : LispObject
101{
102    short min_args, max_args;
103    short fun_number;
104};
105
106struct LispUserFunction : LispObject
107{
108#ifndef NO_LIBS
109    intptr_t alist, blist;      // id for cached blocks
110#else
111    void *arg_list, *block_list;
112#endif
113};
114
115struct LispArray : LispObject
116{
117    static LispArray *Create(int size, void *rest);
118
119    inline LispObject **GetData() { return data; }
120    LispObject *Get(long x);
121
122    unsigned short size;
123    // size * sizeof (void *) follows1
124
125private:
126    LispObject *data[1];
127};
128
129struct LispChar : LispObject
130{
131    int16_t pad;
132    uint16_t ch;
133};
134
135struct LispPointer : LispObject
136{
137    void *addr;
138};
139
140
141struct LispFixedPoint : LispObject
142{
143    int32_t x;
144};
145
146static inline void *&CAR(void *x) { return ((LispList *)x)->car; }
147static inline void *&CDR(void *x) { return ((LispList *)x)->cdr; }
148
149void perm_space();
150void tmp_space();
151void use_user_space(void *addr, long size);
152#define item_type(c) ((c) ? *((ltype *)c) : (ltype)L_CONS_CELL)
153void *lpointer_value(void *lpointer);
154int32_t lnumber_value(void *lnumber);
155char *lstring_value(void *lstring);
156unsigned short lcharacter_value(void *c);
157long lfixed_point_value(void *c);
158void *lisp_atom(void *i);
159void *lcdr(void *c);
160void *lcar(void *c);
161void *lisp_eq(void *n1, void *n2);
162void *lisp_equal(void *n1, void *n2);
163long list_length(void *i);
164void lprint(void *i);
165void *eval(void *prog);
166void *eval_block(void *list);
167void *eval_function(LispSymbol *sym, void *arg_list);
168void *eval_user_fun(LispSymbol *sym, void *arg_list);
169void *compile(char const *&s);
170void *assoc(void *item, void *list);
171void resize_tmp(int new_size);
172void resize_perm(int new_size);
173
174void push_onto_list(void *object, void *&list);
175LispSymbol *add_c_object(void *symbol, int16_t number);
176LispSymbol *add_c_function(char const *name, short min_args, short max_args, short number);
177LispSymbol *add_c_bool_fun(char const *name, short min_args, short max_args, short number);
178LispSymbol *add_lisp_function(char const *name, short min_args, short max_args, short number);
179int read_ltoken(char *&s, char *buffer);
180LispList *new_cons_cell();
181void print_trace_stack(int max_levels);
182
183
184LispPointer *new_lisp_pointer(void *addr);
185LispChar *new_lisp_character(uint16_t ch);
186LispString *new_lisp_string(char const *string);
187LispString *new_lisp_string(char const *string, int length);
188LispString *new_lisp_string(int length);
189LispFixedPoint *new_lisp_fixed_point(int32_t x);
190LispObjectVar *new_lisp_object_var(int16_t number);
191LispSysFunction *new_lisp_sys_function(int min_args, int max_args, int fun_number);
192LispSysFunction *new_lisp_c_function(int min_args, int max_args, int fun_number);
193LispSysFunction *new_lisp_c_bool(int min_args, int max_args, int fun_number);
194
195#ifdef NO_LIBS
196LispUserFunction *new_lisp_user_function(void *arg_list, void *block_list);
197#else
198LispUserFunction *new_lisp_user_function(intptr_t arg_list, intptr_t block_list);
199#endif
200
201LispSysFunction *new_user_lisp_function(int min_args, int max_args, int fun_number);
202
203int end_of_program(char *s);
204void clear_tmp();
205void lisp_init(long perm_size, long tmp_size);
206void lisp_uninit();
207extern LispSymbol *lsym_root;
208
209extern uint8_t *space[4], *free_space[4];
210extern int space_size[4];
211void *nth(int num, void *list);
212int32_t lisp_atan2(int32_t dy, int32_t dx);
213int32_t lisp_sin(int32_t x);
214int32_t lisp_cos(int32_t x);
215void restore_heap(void *val, int heap);
216void *mark_heap(int heap);
217
218extern "C" {
219void lbreak(const char *format, ...);
220} ;
221
222extern void clisp_init();                      // external initalizer call by lisp_init()
223extern long c_caller(long number, void *arg);  // exten c function switches on number
224extern void *l_caller(long number, void *arg);  // exten lisp function switches on number
225
226extern void *l_obj_get(long number);  // exten lisp function switches on number
227extern void l_obj_set(long number, void *arg);  // exten lisp function switches on number
228extern void l_obj_print(long number);  // exten lisp function switches on number
229
230// FIXME: get rid of this later
231static inline void *symbol_value(void *sym) { return ((LispSymbol *)sym)->GetValue(); }
232
233
234
235#endif
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