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70
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1 #ifndef _FAKELISP_H
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2 #define _FAKELISP_H
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3
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4 #include <config.h>
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5
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6 /* Cancel substitutions made by config.h for Emacs. */
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7 #undef open
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8 #undef read
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9 #undef write
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10 #undef close
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11
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12 /* We used to test for `BSTRING' here, but only GCC and Emacs define
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13 `BSTRING', as far as I know, and neither of them use this code. */
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14 #if HAVE_STRING_H || STDC_HEADERS
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15 #include <string.h>
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16 #ifndef bcmp
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17 #define bcmp(s1, s2, n) memcmp ((s1), (s2), (n))
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18 #endif
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19 #ifndef bcopy
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20 #define bcopy(s, d, n) memcpy ((d), (s), (n))
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21 #endif
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22 #ifndef bzero
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23 #define bzero(s, n) memset ((s), 0, (n))
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24 #endif
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25 #else
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26 #include <strings.h>
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27 #endif
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28
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29 typedef unsigned int Lisp_Object;
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30
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31 enum Lisp_Type {
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32 Lisp_Int,
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33 Lisp_Symbol,
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34 Lisp_String,
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35 Lisp_Vector
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36 };
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37
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38 #ifndef VALBITS /* hir, 1994.12.19 */
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39 #define VALBITS 24
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40 #endif
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41 #define VALMASK ((1 << VALBITS) - 1)
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42
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43 #define XTYPE(x) ((enum Lisp_Type)((x)>>VALBITS))
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44
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45 struct Lisp_Vector {
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46 int size;
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47 Lisp_Object *contents;
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48 };
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49
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50 struct Lisp_String {
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51 int size;
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52 unsigned char *data;
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53 };
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54
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55 struct Lisp_Symbol {
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56 unsigned char *name;
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57 Lisp_Object value;
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58 };
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59
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60 #define Qnil (Lisp_Object)(Lisp_Symbol << VALBITS)
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61 #define Qt (Lisp_Object)((Lisp_Symbol << VALBITS) | 1)
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62
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63 #define XFASTINT(x) (x)
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64 #define XVECTOR(x) ((struct Lisp_Vector *)Lisp_Object_Table[(x)&VALMASK])
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65 #define XSTRING(x) ((struct Lisp_String *)Lisp_Object_Table[(x)&VALMASK])
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66 #define XSYMBOL(x) ((struct Lisp_Symbol *)Lisp_Object_Table[(x)&VALMASK])
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67
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68 extern void *Lisp_Object_Table[4096];
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69
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70 extern Lisp_Object make_vector(), make_string(), make_symbol();
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71 extern Lisp_Object Fsymbol_value();
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72
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73 #define GLYPH unsigned int
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74
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75 #endif /* _FAKELISP_H */
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