Last change
on this file since 482 was
482,
checked in by Sam Hocevar, 11 years ago
|
lisp: make all lisp object inherit a common type.
|
File size:
1.1 KB
|
Line | |
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1 | /* |
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2 | * Abuse - dark 2D side-scrolling platform game |
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3 | * Copyright (c) 1995 Crack dot Com |
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4 | * |
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5 | * This software was released into the Public Domain. As with most public |
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6 | * domain software, no warranty is made or implied by Crack dot Com or |
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7 | * Jonathan Clark. |
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8 | */ |
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9 | |
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10 | #include "config.h" |
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11 | |
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12 | LispSymbol *find_symbol(char *name) |
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13 | { |
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14 | LispSymbol *p=lsym_root; |
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15 | while (p) |
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16 | { |
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17 | int cmp=strcmp(name,((char *)((LispSymbol *)cs->car)->name)+sizeof(LispString)); |
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18 | if (cmp==0) return p; |
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19 | else if (cmp<0) p=p->left; |
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20 | else p=p->right; |
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21 | } |
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22 | return NULL; |
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23 | } |
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24 | |
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25 | |
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26 | |
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27 | LispSymbol *make_find_symbol(char *name) |
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28 | { |
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29 | LispSymbol *p=lsym_root; |
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30 | LispSymbol **parent=&lsym_root; |
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31 | while (p) |
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32 | { |
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33 | int cmp=strcmp(name,((char *)((LispSymbol *)cs->car)->name)+sizeof(LispString)); |
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34 | if (cmp==0) return p; |
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35 | else if (cmp<0) |
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36 | { |
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37 | parent=&p->left; |
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38 | p=p->left; |
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39 | } |
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40 | else |
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41 | { |
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42 | parent=&p->right; |
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43 | p=p->right; |
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44 | } |
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45 | } |
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46 | |
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47 | p=malloc(sizeof(LispSymbol)); |
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48 | p->type=L_SYMBOL; |
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49 | p->name=new_lisp_string(name); |
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50 | p->value=l_undefined; |
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51 | p->function=l_undefined; |
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52 | p->call_counter=0; |
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53 | p->left=p->right=NULL; |
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54 | *parent=p; |
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55 | return p; |
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56 | } |
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57 | |
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58 | |
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