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1 /* |
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2 * matiec - a compiler for the programming languages defined in IEC 61131-3 |
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3 * Copyright (C) 2003-2011 Mario de Sousa (msousa@fe.up.pt) |
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4 * Copyright (C) 2007-2011 Laurent Bessard and Edouard Tisserant |
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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 your option) any later version. |
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10 * |
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11 * This program 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 this program. If not, see <http://www.gnu.org/licenses/>. |
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18 * |
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19 * |
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20 * This code is made available on the understanding that it will not be |
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21 * used in safety-critical situations without a full and competent review. |
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22 */ |
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23 |
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24 /* |
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25 * An IEC 61131-3 compiler. |
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26 * |
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27 * Based on the |
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28 * FINAL DRAFT - IEC 61131-3, 2nd Ed. (2001-12-10) |
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29 * |
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30 */ |
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31 |
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32 |
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33 /* |
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34 * Some classes to help with debuging. |
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35 * |
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36 * These classes will print out the current state of a symbol or a portion of the Abstract Syntax Tree. |
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37 */ |
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38 |
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39 |
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40 |
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41 |
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42 |
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43 |
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44 #include "../absyntax/visitor.hh" |
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45 |
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46 |
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47 |
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48 class print_symbol_c: public fcall_visitor_c { |
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49 public: |
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50 static void print(symbol_c *symbol); |
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51 |
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52 protected: |
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53 void fcall(symbol_c *symbol); |
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54 /* AST symbols with extra data have their own specialised methods for printing that data */ |
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55 void *visit(il_instruction_c *symbol); |
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56 |
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57 private: |
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58 static print_symbol_c *singleton; |
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59 |
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60 void dump_symbol(symbol_c* symbol); |
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61 }; |
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62 |
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63 |
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64 |
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65 |
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66 |
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67 |
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68 class print_ast_c: public fcall_iterator_visitor_c { |
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69 public: |
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70 static void print(symbol_c *symbol); |
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71 |
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72 protected: |
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73 void prefix_fcall(symbol_c *symbol); |
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74 void suffix_fcall(symbol_c *symbol); |
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75 |
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76 private: |
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77 static print_ast_c *singleton; |
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78 }; |
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79 |
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