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annotate tests/agcl/examples/good/ffcalc.h @ 21:1c9dac05d040

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Add lint-style FALLTHROUGH annotations to fallthrough cases. (in the parse engine and thus the output code) Document this, because the old output causes warnings with gcc10.
author David A. Holland
date Mon, 13 Jun 2022 00:04:38 -0400
parents 13d2b8934445
children
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1 #ifndef FFCALC_H
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2 #define FFCALC_H
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3
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4 typedef union {
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5 double alignment;
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6 char ag_vt_2[sizeof(int)];
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7 char ag_vt_4[sizeof(double)];
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8 } ffcalc_vs_type;
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9
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10 typedef enum {
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11 ffcalc_white_space_token = 1, ffcalc_calculator_token = 3,
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12 ffcalc_calculation_token, ffcalc_eof_token = 10, ffcalc_expression_token,
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13 ffcalc_name_token, ffcalc_error_token = 14, ffcalc_term_token,
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14 ffcalc_factor_token = 18, ffcalc_integer_part_token = 30,
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15 ffcalc_fraction_part_token = 32, ffcalc_digit_token = 34,
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16 ffcalc_real_token = 44
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17 } ffcalc_token_type;
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18
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19 typedef struct ffcalc_pcb_struct{
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20 ffcalc_token_type token_number, reduction_token, error_frame_token;
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21 int input_code;
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22 int input_value;
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23 int line, column;
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24 int ssx, sn, error_frame_ssx;
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25 int drt, dssx, dsn;
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26 int ss[128];
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27 ffcalc_vs_type vs[128];
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28 int ag_ap;
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29 const char *error_message;
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30 char read_flag;
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31 char exit_flag;
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32 int bts[128], btsx;
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33 int lab[3], rx, fx;
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34 const unsigned char *key_sp;
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35 int save_index, key_state;
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36 char ag_msg[82];
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37 } ffcalc_pcb_type;
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38
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39 #ifndef PRULE_CONTEXT
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40 #define PRULE_CONTEXT(pcb) (&((pcb).cs[(pcb).ssx]))
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41 #define PERROR_CONTEXT(pcb) ((pcb).cs[(pcb).error_frame_ssx])
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42 #define PCONTEXT(pcb) ((pcb).cs[(pcb).ssx])
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43 #endif
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44
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45 #ifndef AG_RUNNING_CODE
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46 /* PCB.exit_flag values */
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47 #define AG_RUNNING_CODE 0
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48 #define AG_SUCCESS_CODE 1
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49 #define AG_SYNTAX_ERROR_CODE 2
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50 #define AG_REDUCTION_ERROR_CODE 3
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51 #define AG_STACK_ERROR_CODE 4
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52 #define AG_SEMANTIC_ERROR_CODE 5
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53 #endif
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54
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55 extern ffcalc_pcb_type ffcalc_pcb;
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56 void init_ffcalc(void);
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57 void ffcalc(void);
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58 #endif
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59