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annotate lwasm/macro.c @ 219:afd50d6b4113

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Add --preprocess option Add --preprocess option which expands macros, resolves conditions, and resolves include files if possible. If an include file is not available, it the include directive is retained.
author William Astle <lost@l-w.ca>
date Sun, 10 Jun 2012 18:24:31 -0600
parents e2728091b75a
children 03f7192fcd20
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
0
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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
0
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41 l -> len = 0;
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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 return;
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47 }
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48
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49 if (as -> inmacro)
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50 {
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51 lwasm_register_error(as, l, "Attempt to define a macro inside a macro");
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52 return;
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53 }
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54
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55 if (!(l -> sym))
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56 {
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57 lwasm_register_error(as, l, "Missing macro name");
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58 return;
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59 }
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60
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61 for (m = as -> macros; m; m = m -> next)
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62 {
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63 if (!strcmp(m -> name, l -> sym))
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64 break;
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65 }
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66 if (m)
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67 {
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68 lwasm_register_error(as, l, "Duplicate macro definition");
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69 return;
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70 }
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71
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72 m = lw_alloc(sizeof(macrotab_t));
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73 m -> name = lw_strdup(l -> sym);
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74 m -> next = as -> macros;
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75 m -> lines = NULL;
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76 m -> numlines = 0;
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77 m -> flags = 0;
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78 as -> macros = m;
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79
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80 t = *p;
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81 while (**p && !isspace(**p))
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82 (*p)++;
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83 tc = **p;
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84 /* ignore unknown flags */
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85 if (strcasecmp(t, "noexpand") == 0)
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86 m -> flags |= macro_noexpand;
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87 **p = tc;
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88 as -> inmacro = 1;
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89 }
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90
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91 PARSEFUNC(pseudo_parse_endm)
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92 {
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93 l -> hideline = 1;
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94 l -> len = 0;
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95
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96 if (as -> skipcond)
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97 {
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98 as -> skipmacro = 0;
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99 return;
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100 }
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101
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102 if (!as -> inmacro)
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103 {
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104 lwasm_register_error(as, l, "ENDM without MACRO");
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105 return;
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106 }
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107
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108 as -> inmacro = 0;
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109
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110 // a macro definition counts as a context break for local symbols
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111 as -> context = lwasm_next_context(as);
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112 }
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113
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114 // the current macro will ALWAYS be the first one in the table
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115 int add_macro_line(asmstate_t *as, char *optr)
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116 {
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117 if (!as -> inmacro)
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118 return 0;
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119
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120 as -> macros -> lines = lw_realloc(as -> macros -> lines, sizeof(char *) * (as -> macros -> numlines + 1));
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121 as -> macros -> lines[as -> macros -> numlines] = lw_strdup(optr);
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122 as -> macros -> numlines += 1;
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123 return 1;
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124 }
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125
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126 void macro_add_to_buff(char **buff, int *loc, int *len, char c)
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127 {
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128 if (*loc == *len)
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129 {
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130 *buff = lw_realloc(*buff, *len + 32);
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131 *len += 32;
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132 }
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133 (*buff)[(*loc)++] = c;
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134 }
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135
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136 // this is just like a regular operation function
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137 /*
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138 macro args are referenced by "\n" where 1 <= n <= 9
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139 or by "\{n}"; a \ can be included by writing \\
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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140 a comma separates argument but one can be included with "\,"
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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141 whitespace ends argument list but can be included with "\ " or the like
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142
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
143 */
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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144 int expand_macro(asmstate_t *as, line_t *l, char **p, char *opc)
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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145 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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146 int lc;
2
7317fbe024af Clean up insane number of compiler warnings under -Wall
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diff changeset
147 line_t *cl; //, *nl;
0
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148 int oldcontext;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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149 macrotab_t *m;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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150
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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151 char **args = NULL; // macro arguments
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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152 int nargs = 0; // number of arguments
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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153
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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154 char *p2, *p3;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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155
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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156 int bloc, blen;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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157 char *linebuff;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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158
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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159 for (m = as -> macros; m; m = m -> next)
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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160 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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161 if (!strcmp(opc, m -> name))
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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162 break;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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163 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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164 // signal no macro expansion
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165 if (!m)
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166 return -1;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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167
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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168 // save current symbol context for after macro expansion
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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169 oldcontext = as -> context;
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170
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171 cl = l;
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172
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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173 as -> context = lwasm_next_context(as);
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174
39
23b01aa3ecf9 Fixed missing NUL termination in macro expansion
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175 while (**p && !isspace(**p) && **p)
0
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176 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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177 p2 = *p;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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178 while (*p2 && !isspace(*p2) && *p2 != ',')
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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179 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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180 if (*p2 == '\\')
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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181 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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182 if (p2[1])
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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183 p2++;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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184 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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185 p2++;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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186 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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187
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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188 // have arg here
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189 args = lw_realloc(args, sizeof(char *) * (nargs + 1));
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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190 args[nargs] = lw_alloc(p2 - *p + 1);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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191 args[nargs][p2 - *p] = '\0';
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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192 memcpy(args[nargs], *p, p2 - *p);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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193 *p = p2;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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194
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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195 // now collapse out "\" characters
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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196 for (p3 = p2 = args[nargs]; *p2; p2++, p3++)
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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197 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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198 if (*p2 == '\\' && p2[1])
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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199 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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200 p2++;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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201 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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202 *p3 = *p2;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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203 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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204 *p3 = '\0';
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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205
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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206 nargs++;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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207 if (**p == ',')
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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208 (*p)++;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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209 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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210
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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211
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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212 // now create a string for the macro
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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213 // and push it into the front of the input stack
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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214 bloc = blen = 0;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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215 linebuff = NULL;
49
bd8b3fbd1e28 Added ability to flag macros as "noexpand" so they are not expanded in the listing
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diff changeset
216
bd8b3fbd1e28 Added ability to flag macros as "noexpand" so they are not expanded in the listing
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217 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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218 {
bd8b3fbd1e28 Added ability to flag macros as "noexpand" so they are not expanded in the listing
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diff changeset
219 char ctcbuf[100];
bd8b3fbd1e28 Added ability to flag macros as "noexpand" so they are not expanded in the listing
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220 char *p;
bd8b3fbd1e28 Added ability to flag macros as "noexpand" so they are not expanded in the listing
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221 snprintf(ctcbuf, 100, "\001\001SETNOEXPANDSTART\n");
bd8b3fbd1e28 Added ability to flag macros as "noexpand" so they are not expanded in the listing
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222 for (p = ctcbuf; *p; p++)
bd8b3fbd1e28 Added ability to flag macros as "noexpand" so they are not expanded in the listing
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223 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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224 }
bd8b3fbd1e28 Added ability to flag macros as "noexpand" so they are not expanded in the listing
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diff changeset
225
0
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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226
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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227 for (lc = 0; lc < m -> numlines; lc++)
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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228 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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229 for (p2 = m -> lines[lc]; *p2; p2++)
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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230 {
57
e2728091b75a Added a \* macro parameter expansion to include all macro parameters
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diff changeset
231 if (*p2 == '\\' && p2[1] == '*')
e2728091b75a Added a \* macro parameter expansion to include all macro parameters
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diff changeset
232 {
e2728091b75a Added a \* macro parameter expansion to include all macro parameters
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diff changeset
233 int n;
e2728091b75a Added a \* macro parameter expansion to include all macro parameters
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diff changeset
234 /* all arguments */
e2728091b75a Added a \* macro parameter expansion to include all macro parameters
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diff changeset
235 for (n = 0; n < nargs; n++)
e2728091b75a Added a \* macro parameter expansion to include all macro parameters
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diff changeset
236 {
e2728091b75a Added a \* macro parameter expansion to include all macro parameters
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diff changeset
237 for (p3 = args[n]; *p3; p3++)
e2728091b75a Added a \* macro parameter expansion to include all macro parameters
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diff changeset
238 {
e2728091b75a Added a \* macro parameter expansion to include all macro parameters
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diff changeset
239 macro_add_to_buff(&linebuff, &bloc, &blen, *p3);
e2728091b75a Added a \* macro parameter expansion to include all macro parameters
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240 }
e2728091b75a Added a \* macro parameter expansion to include all macro parameters
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diff changeset
241 if (n != (nargs -1))
e2728091b75a Added a \* macro parameter expansion to include all macro parameters
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diff changeset
242 {
e2728091b75a Added a \* macro parameter expansion to include all macro parameters
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diff changeset
243 macro_add_to_buff(&linebuff, &bloc, &blen, ',');
e2728091b75a Added a \* macro parameter expansion to include all macro parameters
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diff changeset
244 }
e2728091b75a Added a \* macro parameter expansion to include all macro parameters
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diff changeset
245 }
e2728091b75a Added a \* macro parameter expansion to include all macro parameters
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diff changeset
246 p2++;
e2728091b75a Added a \* macro parameter expansion to include all macro parameters
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diff changeset
247 }
e2728091b75a Added a \* macro parameter expansion to include all macro parameters
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diff changeset
248 else if (*p2 == '\\' && isdigit(p2[1]))
0
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249 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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250 int n;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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251
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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252 p2++;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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253 n = *p2 - '0';
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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254 if (n == 0)
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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255 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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256 for (p3 = m -> name; *p3; p3++)
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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257 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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diff changeset
258 continue;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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259 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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260 if (n < 1 || n > nargs)
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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261 continue;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
262 for (p3 = args[n - 1]; *p3; p3++)
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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263 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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264 continue;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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265 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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266 else if (*p2 == '{')
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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267 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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268 int n = 0, n2;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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269 p2++;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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270 while (*p2 && isdigit(*p2))
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
271 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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272 n2 = *p2 - '0';
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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273 if (n2 < 0 || n2 > 9)
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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274 n2 = 0;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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275 n = n * 10 + n2;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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276 p2++;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
277 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
278 if (*p2 == '}')
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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279 p2++;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
280
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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281 if (n == 0)
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282 {
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283 for (p3 = m -> name; *p3; p3++)
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284 macro_add_to_buff(&linebuff, &bloc, &blen, *p3);
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285 continue;
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286 }
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287 if (n < 1 || n > nargs)
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288 continue;
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289 for (p3 = args[n - 1]; *p3; p3++)
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290 macro_add_to_buff(&linebuff, &bloc, &blen, *p3);
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291 continue;
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292 }
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293 else
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294 {
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295 macro_add_to_buff(&linebuff, &bloc, &blen, *p2);
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296 }
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297 }
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298
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299 macro_add_to_buff(&linebuff, &bloc, &blen, '\n');
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300
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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301 }
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302
49
bd8b3fbd1e28 Added ability to flag macros as "noexpand" so they are not expanded in the listing
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303 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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304 {
bd8b3fbd1e28 Added ability to flag macros as "noexpand" so they are not expanded in the listing
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305 char ctcbuf[100];
bd8b3fbd1e28 Added ability to flag macros as "noexpand" so they are not expanded in the listing
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306 char *p;
bd8b3fbd1e28 Added ability to flag macros as "noexpand" so they are not expanded in the listing
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307 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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308 for (p = ctcbuf; *p; p++)
bd8b3fbd1e28 Added ability to flag macros as "noexpand" so they are not expanded in the listing
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309 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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310 }
bd8b3fbd1e28 Added ability to flag macros as "noexpand" so they are not expanded in the listing
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diff changeset
311
0
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312 {
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313 char ctcbuf[100];
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314 char *p;
40
d96037ea0b80 Fixed line number counting being broken by macros
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315 snprintf(ctcbuf, 100, "\001\001SETCONTEXT %d\n\001\001SETLINENO %d\n", oldcontext, cl -> lineno + 1);
0
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316 for (p = ctcbuf; *p; p++)
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317 macro_add_to_buff(&linebuff, &bloc, &blen, *p);
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318 }
39
23b01aa3ecf9 Fixed missing NUL termination in macro expansion
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diff changeset
319 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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320
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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321 // push the macro into the front of the stream
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322 input_openstring(as, opc, linebuff);
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323 lw_free(linebuff);
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324
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325 // clean up
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326 if (args)
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327 {
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328 while (nargs)
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329 {
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330 lw_free(args[--nargs]);
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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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332 lw_free(args);
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333 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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334
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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335 // indicate a macro was expanded
219
afd50d6b4113 Add --preprocess option
William Astle <lost@l-w.ca>
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diff changeset
336 l -> hideline = 1;
0
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337 return 0;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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338 }