996
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1 /*
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2 * Copyright (C) 2005 Gregor Richards
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3 *
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4 * This file is part of EgoBCh.
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5 *
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6 * EgoBCh is free software; you can redistribute it and/or modify
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7 * it under the terms of the GNU General Public License as published by
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8 * the Free Software Foundation; either version 2 of the License, or
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9 * (at your option) any later version.
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10 *
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11 * EgoBCh is distributed in the hope that it will be useful,
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12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 * GNU General Public License for more details.
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15 *
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16 * You should have received a copy of the GNU General Public License
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17 * along with EgoBCh; if not, write to the Free Software
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18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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19 */
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20
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21 #include "egobch.h"
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22 #include "optimize.h"
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23
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24 void optimize()
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25 {
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26 /* optimize a segment of code */
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27 int a;
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28 struct bchi *cur;
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29
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30 while (iprog[ipptr]) {
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31 cur = prog + pptr;
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32
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33 switch (iprog[ipptr]) {
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34 case '}':
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35 cur->cmd = RTGL;
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36 ipptr++;
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37 pptr++;
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38 break;
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39
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40 case '<':
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41 cur->cmd = LFT;
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42 ipptr++;
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43 pptr++;
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44 break;
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45
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46 case '[':
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47 a = pptr;
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48 ipptr++;
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49 pptr++;
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50
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51 /* run a suboptimize */
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52 optimize();
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53
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54 cur->cmd = LPO;
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55 cur->arg1 = pptr;
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56
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57 cur = prog + pptr;
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58 cur->cmd = LPC;
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59 cur->arg1 = a;
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60
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61 ipptr++;
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62 pptr++;
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63 break;
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64
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65 case ']':
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66 /* let the above run */
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67 return;
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68
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69 case '.':
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70 if (lazy_io) {
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71 cur->cmd = OUT;
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72 pptr++;
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73 }
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74 ipptr++;
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75 break;
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76
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77 case ',':
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78 if (lazy_io) {
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79 cur->cmd = INP;
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80 pptr++;
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81 }
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82 ipptr++;
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83 break;
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84
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85 case '#':
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86 if (debug) {
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87 cur->cmd = DBG;
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88 pptr++;
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89 }
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90 ipptr++;
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91 break;
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92
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93 default:
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94 ipptr++;
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95 break;
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96 }
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97 }
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98
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99 /* we're done, make a fin */
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100 prog[pptr].cmd = FIN;
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101 pptr = 0;
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102 }
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