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annotate lwasm/macro.c @ 267:1035d6ae4b66

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Remove lwcc directory and references in docs The lwcc directory is obsolete and is not going to receive any further development so remove the docs about it and the directory itself.
author William Astle <lost@l-w.ca>
date Sat, 09 Mar 2013 19:03:09 -0700
parents 03f7192fcd20
children 8764142b3192
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 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 m -> definedat = l;
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79 as -> macros = m;
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80
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81 t = *p;
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82 while (**p && !isspace(**p))
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83 (*p)++;
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84 tc = **p;
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85 /* ignore unknown flags */
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86 if (strcasecmp(t, "noexpand") == 0)
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87 m -> flags |= macro_noexpand;
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88 **p = tc;
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89 as -> inmacro = 1;
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90 }
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91
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92 PARSEFUNC(pseudo_parse_endm)
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93 {
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94 l -> hideline = 1;
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95 l -> len = 0;
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96
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97 if (as -> skipcond)
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98 {
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99 as -> skipmacro = 0;
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100 return;
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101 }
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102
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103 if (!as -> inmacro)
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104 {
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105 lwasm_register_error(as, l, "ENDM without MACRO");
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106 return;
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107 }
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108
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109 as -> inmacro = 0;
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110
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111 // a macro definition counts as a context break for local symbols
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112 as -> context = lwasm_next_context(as);
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113 }
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114
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115 // the current macro will ALWAYS be the first one in the table
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116 int add_macro_line(asmstate_t *as, char *optr)
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117 {
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118 if (!as -> inmacro)
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119 return 0;
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120
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121 as -> macros -> lines = lw_realloc(as -> macros -> lines, sizeof(char *) * (as -> macros -> numlines + 1));
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122 as -> macros -> lines[as -> macros -> numlines] = lw_strdup(optr);
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123 as -> macros -> numlines += 1;
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124 return 1;
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125 }
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126
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127 void macro_add_to_buff(char **buff, int *loc, int *len, char c)
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128 {
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129 if (*loc == *len)
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130 {
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131 *buff = lw_realloc(*buff, *len + 32);
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132 *len += 32;
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133 }
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134 (*buff)[(*loc)++] = c;
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135 }
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136
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137 // this is just like a regular operation function
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138 /*
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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139 macro args are referenced by "\n" where 1 <= n <= 9
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140 or by "\{n}"; a \ can be included by writing \\
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141 a comma separates argument but one can be included with "\,"
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142 whitespace ends argument list but can be included with "\ " or the like
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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143
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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144 */
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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145 int expand_macro(asmstate_t *as, line_t *l, char **p, char *opc)
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146 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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147 int lc;
2
7317fbe024af Clean up insane number of compiler warnings under -Wall
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148 line_t *cl; //, *nl;
0
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149 int oldcontext;
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150 macrotab_t *m;
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151
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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152 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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153 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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154
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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155 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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156
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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157 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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158 char *linebuff;
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159
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160 for (m = as -> macros; m; m = m -> next)
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161 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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162 if (!strcmp(opc, m -> name))
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163 break;
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164 }
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165 // signal no macro expansion
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166 if (!m)
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167 return -1;
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168
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169 // save current symbol context for after macro expansion
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170 oldcontext = as -> context;
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171
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172 cl = l;
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173
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174 as -> context = lwasm_next_context(as);
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175
39
23b01aa3ecf9 Fixed missing NUL termination in macro expansion
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176 while (**p && !isspace(**p) && **p)
0
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177 {
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178 p2 = *p;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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179 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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180 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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181 if (*p2 == '\\')
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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182 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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183 if (p2[1])
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184 p2++;
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185 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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186 p2++;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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187 }
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188
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189 // have arg here
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190 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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191 args[nargs] = lw_alloc(p2 - *p + 1);
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192 args[nargs][p2 - *p] = '\0';
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193 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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194 *p = p2;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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195
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196 // 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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197 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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198 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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199 if (*p2 == '\\' && p2[1])
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200 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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201 p2++;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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202 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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203 *p3 = *p2;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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204 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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205 *p3 = '\0';
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206
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207 nargs++;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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208 if (**p == ',')
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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209 (*p)++;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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210 }
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211
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212
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213 // 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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214 // 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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215 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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216 linebuff = NULL;
49
bd8b3fbd1e28 Added ability to flag macros as "noexpand" so they are not expanded in the listing
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217
bd8b3fbd1e28 Added ability to flag macros as "noexpand" so they are not expanded in the listing
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218 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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219 {
bd8b3fbd1e28 Added ability to flag macros as "noexpand" so they are not expanded in the listing
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220 char ctcbuf[100];
bd8b3fbd1e28 Added ability to flag macros as "noexpand" so they are not expanded in the listing
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221 char *p;
bd8b3fbd1e28 Added ability to flag macros as "noexpand" so they are not expanded in the listing
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222 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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223 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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224 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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225 }
bd8b3fbd1e28 Added ability to flag macros as "noexpand" so they are not expanded in the listing
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diff changeset
226
0
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227
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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228 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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229 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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230 for (p2 = m -> lines[lc]; *p2; p2++)
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231 {
57
e2728091b75a Added a \* macro parameter expansion to include all macro parameters
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232 if (*p2 == '\\' && p2[1] == '*')
e2728091b75a Added a \* macro parameter expansion to include all macro parameters
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233 {
e2728091b75a Added a \* macro parameter expansion to include all macro parameters
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234 int n;
e2728091b75a Added a \* macro parameter expansion to include all macro parameters
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235 /* all arguments */
e2728091b75a Added a \* macro parameter expansion to include all macro parameters
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236 for (n = 0; n < nargs; n++)
e2728091b75a Added a \* macro parameter expansion to include all macro parameters
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237 {
e2728091b75a Added a \* macro parameter expansion to include all macro parameters
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238 for (p3 = args[n]; *p3; p3++)
e2728091b75a Added a \* macro parameter expansion to include all macro parameters
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239 {
e2728091b75a Added a \* macro parameter expansion to include all macro parameters
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diff changeset
240 macro_add_to_buff(&linebuff, &bloc, &blen, *p3);
e2728091b75a Added a \* macro parameter expansion to include all macro parameters
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241 }
e2728091b75a Added a \* macro parameter expansion to include all macro parameters
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diff changeset
242 if (n != (nargs -1))
e2728091b75a Added a \* macro parameter expansion to include all macro parameters
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diff changeset
243 {
e2728091b75a Added a \* macro parameter expansion to include all macro parameters
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244 macro_add_to_buff(&linebuff, &bloc, &blen, ',');
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 }
e2728091b75a Added a \* macro parameter expansion to include all macro parameters
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247 p2++;
e2728091b75a Added a \* macro parameter expansion to include all macro parameters
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diff changeset
248 }
e2728091b75a Added a \* macro parameter expansion to include all macro parameters
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diff changeset
249 else if (*p2 == '\\' && isdigit(p2[1]))
0
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250 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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251 int n;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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252
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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253 p2++;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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254 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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255 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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256 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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257 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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258 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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259 continue;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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260 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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261 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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262 continue;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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263 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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264 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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265 continue;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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266 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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267 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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268 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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269 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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270 p2++;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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271 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
272 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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273 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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274 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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275 n2 = 0;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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276 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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277 p2++;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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278 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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279 if (*p2 == '}')
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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280 p2++;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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281
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282 if (n == 0)
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283 {
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284 for (p3 = m -> name; *p3; p3++)
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285 macro_add_to_buff(&linebuff, &bloc, &blen, *p3);
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286 continue;
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287 }
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288 if (n < 1 || n > nargs)
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289 continue;
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290 for (p3 = args[n - 1]; *p3; p3++)
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291 macro_add_to_buff(&linebuff, &bloc, &blen, *p3);
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292 continue;
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293 }
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294 else
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295 {
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296 macro_add_to_buff(&linebuff, &bloc, &blen, *p2);
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297 }
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298 }
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299
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300 macro_add_to_buff(&linebuff, &bloc, &blen, '\n');
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301
2c24602be78f 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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303
49
bd8b3fbd1e28 Added ability to flag macros as "noexpand" so they are not expanded in the listing
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304 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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305 {
bd8b3fbd1e28 Added ability to flag macros as "noexpand" so they are not expanded in the listing
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306 char ctcbuf[100];
bd8b3fbd1e28 Added ability to flag macros as "noexpand" so they are not expanded in the listing
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307 char *p;
bd8b3fbd1e28 Added ability to flag macros as "noexpand" so they are not expanded in the listing
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308 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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309 for (p = ctcbuf; *p; p++)
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310 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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311 }
bd8b3fbd1e28 Added ability to flag macros as "noexpand" so they are not expanded in the listing
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312
0
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313 {
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314 char ctcbuf[100];
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315 char *p;
40
d96037ea0b80 Fixed line number counting being broken by macros
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316 snprintf(ctcbuf, 100, "\001\001SETCONTEXT %d\n\001\001SETLINENO %d\n", oldcontext, cl -> lineno + 1);
0
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317 for (p = ctcbuf; *p; p++)
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318 macro_add_to_buff(&linebuff, &bloc, &blen, *p);
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319 }
39
23b01aa3ecf9 Fixed missing NUL termination in macro expansion
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320 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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321
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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322 // push the macro into the front of the stream
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323 input_openstring(as, opc, linebuff);
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324 lw_free(linebuff);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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325
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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326 // clean up
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327 if (args)
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328 {
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329 while (nargs)
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330 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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331 lw_free(args[--nargs]);
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332 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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333 lw_free(args);
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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
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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336 // indicate a macro was expanded
219
afd50d6b4113 Add --preprocess option
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diff changeset
337 l -> hideline = 1;
0
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338 return 0;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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339 }