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annotate lwasm/pragma.c @ 370:8764142b3192

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Convert internal error/warning handling framework to a new unified system Replace the ad hoc error and warning handling with a new system that codifies the errors with specific codes. This makes it possible in the future for error numbers to be used for testing and other purposes. It also makes sure the error strings themselves are consistent. Thanks to Erik G <erik@6809.org> for the patch.
author William Astle <lost@l-w.ca>
date Mon, 22 Jun 2015 18:49:38 -0600
parents c6d2a1f54e0c
children 71f507f404f1
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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0
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1 /*
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2 pragma.c
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3
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4 Copyright © 2010 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
2
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22 #include <string.h>
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23 #include <ctype.h>
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24
0
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25 #include <lw_string.h>
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26 #include <lw_alloc.h>
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27
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28 #include "lwasm.h"
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29 #include "instab.h"
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30 #include "input.h"
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31
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32 struct pragma_list
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33 {
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34 const char *setstr;
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35 const char *resetstr;
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36 int flag;
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37 };
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38
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39 struct pragma_stack_entry
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40 {
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41 int magic; // must always be at the start of any input stack entry
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42 int flag; // the pragma flag bit
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43 char str[1]; // magic number - this will be allocated bigger
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44 // string will be what's needed to re-instate a pragma
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45 };
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46
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47 static const struct pragma_list set_pragmas[] =
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48 {
108
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49 { "dollarnotlocal", "nodollarnotlocal", PRAGMA_DOLLARNOTLOCAL },
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b6b8c2645f5c Add back the dollarlocal and nodollarlocal pragma strings for compatibility with the documentation.
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50 { "nodollarlocal", "dollarlocal", PRAGMA_DOLLARNOTLOCAL },
108
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51 { "noindex0tonone", "index0tonone", PRAGMA_NOINDEX0TONONE },
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52 { "undefextern", "noundefextern", PRAGMA_UNDEFEXTERN },
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53 { "cescapes", "nocescapes", PRAGMA_CESCAPES },
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54 { "importundefexport", "noimportundefexport", PRAGMA_IMPORTUNDEFEXPORT },
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55 { "pcaspcr", "nopcaspcr", PRAGMA_PCASPCR },
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56 { "shadow", "noshadow", PRAGMA_SHADOW },
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57 { "nolist", "list", PRAGMA_NOLIST },
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344cfc25afec Added initial infrastructure for pragma autobranchlength (suggested by Ebonhand on irc)
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58 { "autobranchlength", "noautobranchlength", PRAGMA_AUTOBRANCHLENGTH },
206
080bb67d84f2 Add export pragma
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59 { "export", "noexport", PRAGMA_EXPORT },
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07e1fac76321 Added pragma to allow non case sensitive symbols
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60 { "symbolnocase", "nosymbolnocase", PRAGMA_SYMBOLNOCASE },
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61 { "nosymbolcase", "symbolcase", PRAGMA_SYMBOLNOCASE },
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5d969517db74 Added condundefzero pragma
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62 { "condundefzero", "nocondundefzero", PRAGMA_CONDUNDEFZERO },
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c6d2a1f54e0c Change processor target variations to pragmas.
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63 { "6809", "6309", PRAGMA_6809 },
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507f442dc71e Add support for 6800 compatibility instructions.
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64 { "6800compat", "no6800compat", PRAGMA_6800COMPAT },
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98f3e016cfd8 Add pragma to turn off forward reference optimization
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65 { "forwardrefmax", "noforwardrefmax", PRAGMA_FORWARDREFMAX },
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66 { 0, 0, 0}
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67 };
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68
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69 int parse_pragma_string(asmstate_t *as, char *str, int ignoreerr)
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70 {
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71 char *p;
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72 int i;
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73 const char *np = str;
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74 int pragmas = as -> pragmas;
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75
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76 while (np)
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77 {
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78 p = lw_token(np, ',', &np);
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79 debug_message(as, 200, "Setting pragma %s", p);
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80 for (i = 0; set_pragmas[i].setstr; i++)
0
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81 {
108
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82 if (!strcasecmp(p, set_pragmas[i].setstr))
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83 {
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84 pragmas |= set_pragmas[i].flag;
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85 goto out;
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86 }
108
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87 if (!strcasecmp(p, set_pragmas[i].resetstr))
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88 {
108
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89 pragmas &= ~(set_pragmas[i].flag);
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90 goto out;
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91 }
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92 }
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93 /* unrecognized pragma here */
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94 if (!ignoreerr)
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95 {
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96 lw_free(p);
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97 return 0;
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98 }
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99 out:
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100 lw_free(p);
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101 }
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102 as -> pragmas = pragmas;
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103 return 1;
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104 }
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105
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106 PARSEFUNC(pseudo_parse_pragma)
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107 {
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108 char *ps, *t;
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109
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110 for (t = *p; *t && !isspace(*t); t++)
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111 /* do nothing */ ;
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112
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113 ps = lw_strndup(*p, t - *p);
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114 *p = t;
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337301ddf74a Fixed error with pragma and *pragma directives
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115
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116 l -> len = 0;
0
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117
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118 if (parse_pragma_string(as, ps, 0) == 0)
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119 {
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120 lwasm_register_error(as, l, E_PRAGMA_UNRECOGNIZED);
0
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121 }
81
428068681cbf Added nolist pragma to suppress listing output of non-code generating lines
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122 if (as -> pragmas & PRAGMA_NOLIST)
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123 l -> pragmas |= PRAGMA_NOLIST;
0
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124 lw_free(ps);
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125 }
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126
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127 PARSEFUNC(pseudo_parse_starpragma)
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128 {
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129 char *ps, *t;
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8fa52c3f2970 Make *pragma work correctly
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130
0
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131 for (t = *p; *t && !isspace(*t); t++)
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132 /* do nothing */ ;
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133
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
134 ps = lw_strndup(*p, t - *p);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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135 *p = t;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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136
56
337301ddf74a Fixed error with pragma and *pragma directives
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diff changeset
137 l -> len = 0;
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lost@l-w.ca
parents: 53
diff changeset
138
0
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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139 // *pragma must NEVER throw an error
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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140 parse_pragma_string(as, ps, 1);
81
428068681cbf Added nolist pragma to suppress listing output of non-code generating lines
Lost Wizard (lost@starbug3)
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diff changeset
141 if (as -> pragmas & PRAGMA_NOLIST)
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parents: 56
diff changeset
142 l -> pragmas |= PRAGMA_NOLIST;
0
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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143 lw_free(ps);
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144 }
108
9960e05cbe3a Added *pragmapush and *pragmapop; still seems to be nonfunctional
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145
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146 static int pragma_stack_compare(input_stack_entry *e, void *d)
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147 {
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148 int flag = *((int *)d);
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149 struct pragma_stack_entry *pse = (struct pragma_stack_entry *)e;
110
38c1537857ce Pragma stack at parse stage now works
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diff changeset
150
108
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151 if (pse -> flag == flag)
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152 return 1;
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153 return 0;
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154 }
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155
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156 PARSEFUNC(pseudo_parse_starpragmapop)
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157 {
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158 char *ps, *t;
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159 char *pp;
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160 int i;
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diff changeset
161 const char *np;
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lost@l-w.ca
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162 struct pragma_stack_entry *pse;
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163
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164 for (t = *p; *t && !isspace(*t); t++)
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165 /* do nothing */ ;
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166
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167 ps = lw_strndup(*p, t - *p);
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168 *p = t;
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169
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170 l -> len = 0;
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171
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172 // *pragma stuff must never throw an error
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173 np = ps;
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174
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175 while (np)
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176 {
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177 pp = lw_token(np, ',', &np);
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178 for (i = 0; set_pragmas[i].setstr; i++)
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179 {
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180 if (!strcasecmp(pp, set_pragmas[i].setstr) || !strcasecmp(pp, set_pragmas[i].resetstr))
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181 {
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182 pse = (struct pragma_stack_entry *)input_stack_pop(as, 0x42424242, pragma_stack_compare, (void *)&(set_pragmas[i].flag));
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183 if (pse)
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184 {
110
38c1537857ce Pragma stack at parse stage now works
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185 debug_message(as, 100, "Popped pragma string %s", pse->str);
108
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186 parse_pragma_string(as, (char *)&(pse->str), 1);
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187 lw_free(pse);
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188 }
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189 if (set_pragmas[i].flag == PRAGMA_NOLIST)
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190 l -> pragmas |= PRAGMA_NOLIST;
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191 }
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192 }
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193 lw_free(pp);
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194 }
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195
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196 lw_free(ps);
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197 }
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198
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199 PARSEFUNC(pseudo_parse_starpragmapush)
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200 {
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201 char *ps, *t;
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202 char *pp;
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203 int i;
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204 const char *np;
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205 struct pragma_stack_entry *pse;
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206
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207 for (t = *p; *t && !isspace(*t); t++)
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208 /* do nothing */ ;
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209
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diff changeset
210 ps = lw_strndup(*p, t - *p);
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diff changeset
211 *p = t;
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diff changeset
212
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diff changeset
213 l -> len = 0;
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214
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215 // *pragma stuff must never throw an error
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diff changeset
216 np = ps;
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diff changeset
217
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diff changeset
218 while (np)
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219 {
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220 pp = lw_token(np, ',', &np);
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diff changeset
221 for (i = 0; set_pragmas[i].setstr; i++)
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diff changeset
222 {
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diff changeset
223 if (!strcasecmp(pp, set_pragmas[i].setstr) || !strcasecmp(pp, set_pragmas[i].resetstr))
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parents: 85
diff changeset
224 {
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225 /* found set or reset pragma */
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diff changeset
226 /* push pragma state */
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diff changeset
227 if (as -> pragmas & (set_pragmas[i].flag))
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diff changeset
228 {
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diff changeset
229 /* use set string */
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lost@l-w.ca
parents: 85
diff changeset
230 t = (char *)set_pragmas[i].setstr;
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parents: 85
diff changeset
231 }
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parents: 85
diff changeset
232 else
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parents: 85
diff changeset
233 {
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diff changeset
234 /* use reset string */
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lost@l-w.ca
parents: 85
diff changeset
235 t = (char *)set_pragmas[i].resetstr;
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lost@l-w.ca
parents: 85
diff changeset
236 }
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diff changeset
237 pse = lw_alloc(sizeof(struct pragma_stack_entry) + strlen(t));
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diff changeset
238 pse -> flag = set_pragmas[i].flag;
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diff changeset
239 pse -> magic = 0x42424242;
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diff changeset
240 strcpy((char *)&(pse -> str), t);
110
38c1537857ce Pragma stack at parse stage now works
lost@l-w.ca
parents: 108
diff changeset
241 debug_message(as, 100, "Pushed pragma string %s", pse->str);
38c1537857ce Pragma stack at parse stage now works
lost@l-w.ca
parents: 108
diff changeset
242
108
9960e05cbe3a Added *pragmapush and *pragmapop; still seems to be nonfunctional
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parents: 85
diff changeset
243 input_stack_push(as, (input_stack_entry *)pse);
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parents: 85
diff changeset
244
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parents: 85
diff changeset
245 if (set_pragmas[i].flag == PRAGMA_NOLIST)
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lost@l-w.ca
parents: 85
diff changeset
246 l -> pragmas |= PRAGMA_NOLIST;
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parents: 85
diff changeset
247 }
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lost@l-w.ca
parents: 85
diff changeset
248 }
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diff changeset
249 lw_free(pp);
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lost@l-w.ca
parents: 85
diff changeset
250 }
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diff changeset
251
9960e05cbe3a Added *pragmapush and *pragmapop; still seems to be nonfunctional
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diff changeset
252 lw_free(ps);
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parents: 85
diff changeset
253 }
9960e05cbe3a Added *pragmapush and *pragmapop; still seems to be nonfunctional
lost@l-w.ca
parents: 85
diff changeset
254