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annotate lwasm/macro.c @ 481:62720ac9e28d
Exclude extended indirect from operandsizewarning pragma
Constant indirect addressing is only available in "extended" variety (16
bits) so make sure no warning appears when plain extended indirect
addressing is used.
author | William Astle <lost@l-w.ca> |
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date | Wed, 12 Dec 2018 21:18:20 -0700 |
parents | 5524649f4784 |
children | a4a58c4c7a41 |
rev | line source |
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1 /* |
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2 macro.c |
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3 Copyright © 2008 William Astle |
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4 |
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5 This file is part of LWASM. |
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6 |
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7 LWASM is free software: you can redistribute it and/or modify it under the |
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8 terms of the GNU General Public License as published by the Free Software |
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9 Foundation, either version 3 of the License, or (at your option) any later |
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10 version. |
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11 |
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12 This program is distributed in the hope that it will be useful, but WITHOUT |
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
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15 more details. |
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16 |
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17 You should have received a copy of the GNU General Public License along with |
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18 this program. If not, see <http://www.gnu.org/licenses/>. |
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19 |
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20 Contains stuff associated with macro processing |
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21 */ |
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22 |
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23 #include <ctype.h> |
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24 #include <stdlib.h> |
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25 #include <string.h> |
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26 #include <stdio.h> |
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27 |
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28 #include <lw_alloc.h> |
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29 #include <lw_string.h> |
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30 |
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31 #include "lwasm.h" |
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32 #include "input.h" |
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33 #include "instab.h" |
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34 |
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35 PARSEFUNC(pseudo_parse_macro) |
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36 { |
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37 macrotab_t *m; |
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38 char *t; |
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39 char tc; |
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40 |
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41 l -> len = 0; |
219 | 42 l -> hideline = 1; |
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43 if (as -> skipcond) |
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44 { |
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45 as -> skipmacro = 1; |
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46 skip_operand(p); |
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47 return; |
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48 } |
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49 |
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50 if (as -> inmacro) |
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51 { |
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52 lwasm_register_error(as, l, E_MACRO_RECURSE); |
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53 return; |
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54 } |
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55 |
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56 if (!(l -> sym)) |
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57 { |
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58 lwasm_register_error(as, l, E_MACRO_NONAME); |
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59 return; |
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60 } |
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61 |
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62 for (m = as -> macros; m; m = m -> next) |
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63 { |
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64 if (!strcasecmp(m -> name, l -> sym)) |
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65 break; |
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66 } |
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67 if (m) |
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68 { |
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69 lwasm_register_error(as, l, E_MACRO_DUPE); |
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70 return; |
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71 } |
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72 |
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73 m = lw_alloc(sizeof(macrotab_t)); |
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74 m -> name = lw_strdup(l -> sym); |
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75 m -> next = as -> macros; |
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76 m -> lines = NULL; |
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77 m -> numlines = 0; |
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78 m -> flags = 0; |
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79 m -> definedat = l; |
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80 as -> macros = m; |
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81 |
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82 t = *p; |
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83 while (**p && !isspace(**p)) |
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84 (*p)++; |
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85 tc = **p; |
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86 /* ignore unknown flags */ |
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87 if (strcasecmp(t, "noexpand") == 0) |
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88 m -> flags |= macro_noexpand; |
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89 **p = tc; |
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90 as -> inmacro = 1; |
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91 } |
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92 |
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93 PARSEFUNC(pseudo_parse_endm) |
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94 { |
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96 l -> len = 0; |
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97 |
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98 if (as -> skipcond) |
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99 { |
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100 as -> skipmacro = 0; |
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101 return; |
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102 } |
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103 |
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104 if (!as -> inmacro) |
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105 { |
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106 lwasm_register_error(as, l, E_MACRO_ENDM); |
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107 return; |
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108 } |
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109 |
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110 as -> inmacro = 0; |
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111 |
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112 // a macro definition counts as a context break for local symbols |
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113 as -> context = lwasm_next_context(as); |
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114 } |
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115 |
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116 // the current macro will ALWAYS be the first one in the table |
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117 int add_macro_line(asmstate_t *as, char *optr) |
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118 { |
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119 if (!as -> inmacro) |
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120 return 0; |
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121 |
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122 as -> macros -> lines = lw_realloc(as -> macros -> lines, sizeof(char *) * (as -> macros -> numlines + 1)); |
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123 as -> macros -> lines[as -> macros -> numlines] = lw_strdup(optr); |
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124 as -> macros -> numlines += 1; |
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125 return 1; |
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126 } |
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127 |
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128 void macro_add_to_buff(char **buff, int *loc, int *len, char c) |
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129 { |
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130 if (*loc == *len) |
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131 { |
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132 *buff = lw_realloc(*buff, *len + 32); |
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133 *len += 32; |
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134 } |
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135 (*buff)[(*loc)++] = c; |
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136 } |
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137 |
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138 // this is just like a regular operation function |
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139 /* |
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140 macro args are referenced by "\n" where 1 <= n <= 9 |
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141 or by "\{n}"; a \ can be included by writing \\ |
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142 a comma separates argument but one can be included with "\," |
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143 whitespace ends argument list but can be included with "\ " or the like |
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144 |
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145 */ |
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146 int expand_macro(asmstate_t *as, line_t *l, char **p, char *opc) |
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147 { |
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148 int lc; |
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149 line_t *cl; //, *nl; |
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150 int oldcontext; |
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151 macrotab_t *m; |
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152 |
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153 char **args = NULL; // macro arguments |
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154 int nargs = 0; // number of arguments |
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155 |
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156 char *p2, *p3; |
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157 |
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158 int bloc, blen; |
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159 char *linebuff; |
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160 |
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161 for (m = as -> macros; m; m = m -> next) |
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162 { |
372
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163 if (!strcasecmp(opc, m -> name)) |
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164 break; |
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165 } |
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166 // signal no macro expansion |
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167 if (!m) |
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168 return -1; |
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169 |
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170 // save current symbol context for after macro expansion |
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171 oldcontext = as -> context; |
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172 |
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173 cl = l; |
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174 |
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175 as -> context = lwasm_next_context(as); |
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176 |
39 | 177 while (**p && !isspace(**p) && **p) |
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178 { |
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179 p2 = *p; |
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180 while (*p2 && !isspace(*p2) && *p2 != ',') |
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181 { |
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182 if (*p2 == '\\') |
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183 { |
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184 if (p2[1]) |
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185 p2++; |
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186 } |
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187 p2++; |
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188 } |
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189 |
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190 // have arg here |
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191 args = lw_realloc(args, sizeof(char *) * (nargs + 1)); |
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192 args[nargs] = lw_alloc(p2 - *p + 1); |
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193 args[nargs][p2 - *p] = '\0'; |
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194 memcpy(args[nargs], *p, p2 - *p); |
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195 *p = p2; |
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196 |
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197 // now collapse out "\" characters |
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198 for (p3 = p2 = args[nargs]; *p2; p2++, p3++) |
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199 { |
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200 if (*p2 == '\\' && p2[1]) |
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201 { |
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202 p2++; |
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203 } |
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204 *p3 = *p2; |
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205 } |
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206 *p3 = '\0'; |
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207 |
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208 nargs++; |
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209 if (**p == ',') |
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210 (*p)++; |
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211 } |
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212 |
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213 |
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214 // now create a string for the macro |
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215 // and push it into the front of the input stack |
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216 bloc = blen = 0; |
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217 linebuff = NULL; |
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218 |
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219 if (m -> flags & macro_noexpand) |
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220 { |
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221 char ctcbuf[100]; |
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222 char *p; |
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223 snprintf(ctcbuf, 100, "\001\001SETNOEXPANDSTART\n"); |
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224 for (p = ctcbuf; *p; p++) |
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225 macro_add_to_buff(&linebuff, &bloc, &blen, *p); |
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226 } |
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227 |
0
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228 |
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229 for (lc = 0; lc < m -> numlines; lc++) |
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230 { |
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231 for (p2 = m -> lines[lc]; *p2; p2++) |
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232 { |
57
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233 if (*p2 == '\\' && p2[1] == '*') |
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234 { |
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235 int n; |
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236 /* all arguments */ |
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237 for (n = 0; n < nargs; n++) |
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238 { |
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239 for (p3 = args[n]; *p3; p3++) |
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240 { |
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241 macro_add_to_buff(&linebuff, &bloc, &blen, *p3); |
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242 } |
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243 if (n != (nargs -1)) |
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244 { |
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245 macro_add_to_buff(&linebuff, &bloc, &blen, ','); |
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246 } |
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247 } |
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Added a \* macro parameter expansion to include all macro parameters
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49
diff
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248 p2++; |
e2728091b75a
Added a \* macro parameter expansion to include all macro parameters
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49
diff
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249 } |
e2728091b75a
Added a \* macro parameter expansion to include all macro parameters
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49
diff
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250 else if (*p2 == '\\' && isdigit(p2[1])) |
0
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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251 { |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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252 int n; |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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253 |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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254 p2++; |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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255 n = *p2 - '0'; |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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256 if (n == 0) |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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257 { |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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258 for (p3 = m -> name; *p3; p3++) |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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259 macro_add_to_buff(&linebuff, &bloc, &blen, *p3); |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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260 continue; |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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261 } |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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262 if (n < 1 || n > nargs) |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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263 continue; |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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264 for (p3 = args[n - 1]; *p3; p3++) |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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265 macro_add_to_buff(&linebuff, &bloc, &blen, *p3); |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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266 continue; |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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267 } |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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268 else if (*p2 == '{') |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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269 { |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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270 int n = 0, n2; |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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271 p2++; |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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272 while (*p2 && isdigit(*p2)) |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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273 { |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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274 n2 = *p2 - '0'; |
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275 if (n2 < 0 || n2 > 9) |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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276 n2 = 0; |
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277 n = n * 10 + n2; |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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278 p2++; |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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279 } |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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280 if (*p2 == '}') |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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281 p2++; |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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282 |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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283 if (n == 0) |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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284 { |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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285 for (p3 = m -> name; *p3; p3++) |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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286 macro_add_to_buff(&linebuff, &bloc, &blen, *p3); |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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287 continue; |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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288 } |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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289 if (n < 1 || n > nargs) |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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290 continue; |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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291 for (p3 = args[n - 1]; *p3; p3++) |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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292 macro_add_to_buff(&linebuff, &bloc, &blen, *p3); |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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293 continue; |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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294 } |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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295 else |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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296 { |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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297 macro_add_to_buff(&linebuff, &bloc, &blen, *p2); |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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298 } |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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299 } |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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300 |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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301 macro_add_to_buff(&linebuff, &bloc, &blen, '\n'); |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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302 |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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303 } |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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304 |
49
bd8b3fbd1e28
Added ability to flag macros as "noexpand" so they are not expanded in the listing
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40
diff
changeset
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305 if (m -> flags & macro_noexpand) |
bd8b3fbd1e28
Added ability to flag macros as "noexpand" so they are not expanded in the listing
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diff
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306 { |
bd8b3fbd1e28
Added ability to flag macros as "noexpand" so they are not expanded in the listing
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307 char ctcbuf[100]; |
bd8b3fbd1e28
Added ability to flag macros as "noexpand" so they are not expanded in the listing
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308 char *p; |
bd8b3fbd1e28
Added ability to flag macros as "noexpand" so they are not expanded in the listing
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309 snprintf(ctcbuf, 100, "\001\001SETNOEXPANDEND\n"); |
bd8b3fbd1e28
Added ability to flag macros as "noexpand" so they are not expanded in the listing
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310 for (p = ctcbuf; *p; p++) |
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Added ability to flag macros as "noexpand" so they are not expanded in the listing
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311 macro_add_to_buff(&linebuff, &bloc, &blen, *p); |
bd8b3fbd1e28
Added ability to flag macros as "noexpand" so they are not expanded in the listing
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312 } |
bd8b3fbd1e28
Added ability to flag macros as "noexpand" so they are not expanded in the listing
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diff
changeset
|
313 |
0
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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314 { |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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315 char ctcbuf[100]; |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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316 char *p; |
40
d96037ea0b80
Fixed line number counting being broken by macros
lost@l-w.ca
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39
diff
changeset
|
317 snprintf(ctcbuf, 100, "\001\001SETCONTEXT %d\n\001\001SETLINENO %d\n", oldcontext, cl -> lineno + 1); |
0
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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318 for (p = ctcbuf; *p; p++) |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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319 macro_add_to_buff(&linebuff, &bloc, &blen, *p); |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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parents:
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|
320 } |
39 | 321 macro_add_to_buff(&linebuff, &bloc, &blen, 0); |
0
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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parents:
diff
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|
322 |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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323 // push the macro into the front of the stream |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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|
324 input_openstring(as, opc, linebuff); |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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|
325 lw_free(linebuff); |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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|
326 |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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parents:
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|
327 // clean up |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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|
328 if (args) |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff
changeset
|
329 { |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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parents:
diff
changeset
|
330 while (nargs) |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff
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|
331 { |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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parents:
diff
changeset
|
332 lw_free(args[--nargs]); |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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parents:
diff
changeset
|
333 } |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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parents:
diff
changeset
|
334 lw_free(args); |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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parents:
diff
changeset
|
335 } |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
336 |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
337 // indicate a macro was expanded |
219 | 338 l -> hideline = 1; |
0
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
339 return 0; |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
340 } |