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1 /* -*- mode: C; coding: utf-8; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*-
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2 *
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3 * cfunge - A standard-conforming Befunge93/98/109 interpreter in C.
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4 * Copyright (C) 2008-2009 Arvid Norlander <anmaster AT tele2 DOT se>
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5 *
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6 * This program 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 3 of the License, or
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9 * (at the proxy's option) any later version. Arvid Norlander is a
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10 * proxy who can decide which future versions of the GNU General Public
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11 * License can be used.
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12 *
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13 * This program is distributed in the hope that it will be useful,
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14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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16 * GNU General Public License for more details.
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17 *
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18 * You should have received a copy of the GNU General Public License
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19 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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20 */
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21
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22 /**
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23 * @file
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24 * Header for interpreter.c (that contains the main loop and parser).
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25 */
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26
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27 #ifndef FUNGE_HAD_SRC_INTERPRETER_H
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28 #define FUNGE_HAD_SRC_INTERPRETER_H
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29
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30 #include "global.h"
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31
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32 #include <sys/types.h>
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33 #include <stdint.h>
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34
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35 #include "ip.h"
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36
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37 // Certain instructions that are also used elsewhere.
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38 /**
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39 * Run a _ instruction.
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40 * @param ip to IP to execute this instruction for.
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41 */
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42 FUNGE_ATTR_NONNULL FUNGE_ATTR_FAST
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43 void if_east_west(instructionPointer * restrict ip);
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44 /**
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45 * Run a | instruction.
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46 * @param ip to IP to execute this instruction for.
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47 */
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48 FUNGE_ATTR_NONNULL FUNGE_ATTR_FAST
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49 void if_north_south(instructionPointer * restrict ip);
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50
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51 /**
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52 * Run instruction. Different prototype depending on if CONCURRENT_FUNGE
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53 * is defined or not.
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54 * @param opcode Instruction to execute
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55 * @param ip Instruction pointer to execute the instruction in.
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56 * @param threadindex The thread index (only if CONCURRENT_FUNGE is defined)
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57 * @returns
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58 * Return value only if CONCURRENT_FUNGE is defined. If true we executed an
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59 * instruction that took 0 ticks, so call me again right away (in main loop)!
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60 */
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61 #ifdef CONCURRENT_FUNGE
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62 FUNGE_ATTR_NONNULL FUNGE_ATTR_FAST
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63 bool execute_instruction(funge_cell opcode,
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64 instructionPointer * restrict ip,
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65 ssize_t * threadindex);
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66 #else
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67 FUNGE_ATTR_NONNULL FUNGE_ATTR_FAST
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68 void execute_instruction(funge_cell opcode,
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69 instructionPointer * restrict ip);
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70 #endif
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71
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72 /**
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73 * Start interpreter on a specific filename.
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74 * @warning MUST only be called from main.c
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75 * @param filename Filename to operate on.
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76 */
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77 FUNGE_ATTR_NORET FUNGE_ATTR_FAST
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78 void interpreter_run(const char *filename);
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79
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80 #endif
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