annotate helpgen/readhelp.h @ 21:1c9dac05d040

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 5581ef01f993
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1 #ifndef READHELP_H_1181769468
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2 #define READHELP_H_1181769468
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3
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4 typedef union {
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5 long alignment;
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6 char ag_vt_2[sizeof(int)];
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7 char ag_vt_3[sizeof(long)];
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8 char ag_vt_4[sizeof(const char *)];
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9 } readhelp_vs_type;
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10
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11 typedef enum {
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12 readhelp_letter_token = 1, readhelp_blanks_token = 3,
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13 readhelp_blank_token, readhelp_eol_token, readhelp_text_token = 7,
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14 readhelp_cr_token = 10, readhelp_nl_token = 12, readhelp_new_line_token,
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15 readhelp_continue_token, readhelp_name_token = 17, readhelp_title_token,
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16 readhelp_titles_token, readhelp_text_lines_token = 21,
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17 readhelp_text_unit_token, readhelp_cross_reference_token = 25,
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18 readhelp_cross_reference_text_token, readhelp_right_token,
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19 readhelp_left_token, readhelp_block_body_token,
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20 readhelp_blank_lines_token, readhelp_end_block_token,
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21 readhelp_block_token = 33, readhelp_real_block_body_token = 35,
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22 readhelp_file_token = 37, readhelp_blocks_token, readhelp_eof_token
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23 } readhelp_token_type;
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24
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25 typedef struct readhelp_pcb_struct{
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26 readhelp_token_type token_number, reduction_token, error_frame_token;
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27 int input_code;
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28 int input_value;
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29 int line, column;
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30 int ssx, sn, error_frame_ssx;
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31 int drt, dssx, dsn;
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32 int ss[128];
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33 readhelp_vs_type vs[128];
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34 int ag_ap;
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35 const char *error_message;
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36 char read_flag;
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37 char exit_flag;
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38 unsigned char * input_context;
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39 unsigned char * cs[128];
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40 int bts[128], btsx;
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41 unsigned char * pointer;
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42 unsigned char * la_ptr;
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43 const unsigned char *key_sp;
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44 int save_index, key_state;
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45 char ag_msg[82];
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46 } readhelp_pcb_type;
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47
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48 #ifndef PRULE_CONTEXT
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49 #define PRULE_CONTEXT(pcb) (&((pcb).cs[(pcb).ssx]))
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50 #define PERROR_CONTEXT(pcb) ((pcb).cs[(pcb).error_frame_ssx])
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51 #define PCONTEXT(pcb) ((pcb).cs[(pcb).ssx])
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52 #endif
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53
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54 #ifndef AG_RUNNING_CODE
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55 /* PCB.exit_flag values */
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56 #define AG_RUNNING_CODE 0
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57 #define AG_SUCCESS_CODE 1
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58 #define AG_SYNTAX_ERROR_CODE 2
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59 #define AG_REDUCTION_ERROR_CODE 3
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60 #define AG_STACK_ERROR_CODE 4
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61 #define AG_SEMANTIC_ERROR_CODE 5
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62 #endif
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63
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64 extern readhelp_pcb_type readhelp_pcb;
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65 void init_readhelp(void);
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66 void readhelp(void);
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67 #endif
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68