annotate lwcc/symbol.c @ 536:33a59e232a5b

Fix basic output target to keep lines below 249 characters The line length limiter in the basic output was not properly moving to the next before 249 characters, which is the limit Color Basic can read in an ASCII basic program. Changed the line limiter to 240 from 247 to account for a possible 5 digit number plus a comma and just a bit of extra breathing space.
author William Astle <lost@l-w.ca>
date Thu, 16 Jun 2022 13:55:34 -0600
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children
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1 /*
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2 lwcc/symbol.c
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3
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4 Copyright © 2013 William Astle
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5
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6 This file is part of LWTOOLS.
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7
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8 LWTOOLS is free software: you can redistribute it and/or modify it under the
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9 terms of the GNU General Public License as published by the Free Software
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10 Foundation, either version 3 of the License, or (at your option) any later
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11 version.
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12
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13 This program is distributed in the hope that it will be useful, but WITHOUT
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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16 more details.
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17
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18 You should have received a copy of the GNU General Public License along with
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19 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 #include <string.h>
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23
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24 #include <lw_alloc.h>
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25 #include <lw_string.h>
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26
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27 #include "cpp.h"
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28 #include "symbol.h"
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29 #include "token.h"
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30
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31 void symbol_free(struct symtab_e *s)
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32 {
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33 int i;
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34
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35 lw_free(s -> name);
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36
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37 for (i = 0; i < s -> nargs; i++)
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38 lw_free(s -> params[i]);
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39 lw_free(s -> params);
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40 token_list_destroy(s -> tl);
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41 }
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42
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43 struct symtab_e *symtab_find(struct preproc_info *pp, char *name)
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44 {
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45 struct symtab_e *s;
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46
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47 for (s = pp -> sh; s; s = s -> next)
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48 {
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49 if (strcmp(s -> name, name) == 0)
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50 {
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51 return s;
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52 }
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53 }
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54 return NULL;
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55 }
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56
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57 void symtab_undef(struct preproc_info *pp, char *name)
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58 {
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59 struct symtab_e *s, **p;
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60
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61 p = &(pp -> sh);
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62 for (s = pp -> sh; s; s = s -> next)
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63 {
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64 if (strcmp(s -> name, name) == 0)
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65 {
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66 (*p) -> next = s -> next;
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67 symbol_free(s);
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68 return;
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69 }
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70 p = &((*p) -> next);
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71 }
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72 }
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73
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74 void symtab_define(struct preproc_info *pp, char *name, struct token_list *def, int nargs, char **params, int vargs)
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75 {
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76 struct symtab_e *s;
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77 int i;
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78
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79 s = lw_alloc(sizeof(struct symtab_e));
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80 s -> name = lw_strdup(name);
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81 s -> tl = def;
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82 s -> nargs = nargs;
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83 s -> params = NULL;
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84 if (params)
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85 {
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86 s -> params = lw_alloc(sizeof(char *) * nargs);
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87 for (i = 0; i < nargs; i++)
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88 s -> params[i] = lw_strdup(params[i]);
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89 }
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90 s -> vargs = vargs;
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91 s -> next = pp -> sh;
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92 pp -> sh = s;
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93 }
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94
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95 void symtab_dump(struct preproc_info *pp)
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96 {
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97 struct symtab_e *s;
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98 struct token *t;
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99 int i;
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100
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101 for (s = pp -> sh; s; s = s -> next)
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102 {
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103 printf("%s", s -> name);
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104 if (s -> nargs >= 0)
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105 {
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106 printf("(");
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107 for (i = 0; i < s -> nargs; i++)
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108 {
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109 if (i)
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110 printf(",");
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111 printf("%s", s -> params[i]);
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112 }
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113 if (s -> vargs)
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114 {
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115 if (s -> nargs)
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116 printf(",");
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117 printf("...");
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118 }
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119 printf(")");
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120 }
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121 printf(" => ");
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122 if (s -> tl)
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123 {
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124 for (t = s -> tl -> head; t; t = t -> next)
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125 {
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126 token_print(t, stdout);
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127 }
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128 }
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129 printf("\n");
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130 }
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131 }