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annotate tests/agcl/examples/good/ffcalcx.h @ 20:bb115deb6fb2

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Improve agfiles rule. (1) It didn't depend on $(AGCL) and it absolutely should have. (2) allow AGFORCE=1 to make it rebuild whether or not it looks out of date. (3) Document this.
author David A. Holland
date Mon, 13 Jun 2022 00:02:15 -0400
parents 13d2b8934445
children
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1 #ifndef FFCALCX_H
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2 #define FFCALCX_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 } ffcalcx_vs_type;
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9
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10 typedef enum {
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11 ffcalcx_white_space_token = 1, ffcalcx_unary_minus_token = 7,
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12 ffcalcx_calculator_token, ffcalcx_calculation_token,
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13 ffcalcx_eof_token = 15, ffcalcx_expression_token, ffcalcx_name_token,
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14 ffcalcx_error_token = 19, ffcalcx_integer_part_token = 29,
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15 ffcalcx_fraction_part_token = 31, ffcalcx_digit_token = 33,
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16 ffcalcx_real_token = 39
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17 } ffcalcx_token_type;
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18
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19 typedef struct ffcalcx_pcb_struct{
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20 ffcalcx_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 ffcalcx_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 } ffcalcx_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 ffcalcx_pcb_type ffcalcx_pcb;
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56 void init_ffcalcx(void);
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57 void ffcalcx(void);
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58 #endif
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