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annotate lwasm/macro.c @ 577:e49d24f4a9a5

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Correct bug in the object file output code leading to stack corruption It turns out leaving a pointer to a stack allocated temporary in a persistent data structure is not conducive to correct program operation. Undo the export check setup in the object file output sequence so a pointer to stack allocated memory is not left hanging when the function returns. This seems to correct at least one mysterious crash bug, and possibly others. Thanks to Boisy Pitre for reporting the crash bug that led to this discovery, as well as a previous crash bug that likely has the same root cause. Additional thanks to Ciaran Anscomb whose debugger wielding wizardry revealed the exact location of this particular bit of unbrilliance.
author William Astle <lost@l-w.ca>
date Sat, 03 Aug 2024 14:30:06 -0600
parents bbc600db5016
children
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 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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95 l -> hideline = 1;
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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 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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137
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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138 // this is just like a regular operation function
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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139 /*
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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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 \\
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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142 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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143 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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144
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
145 */
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
146 int expand_macro(asmstate_t *as, line_t *l, char **p, char *opc)
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147 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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148 int lc;
2
7317fbe024af Clean up insane number of compiler warnings under -Wall
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parents: 0
diff changeset
149 line_t *cl; //, *nl;
0
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150 int oldcontext;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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151 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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152
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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153 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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154 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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155
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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156 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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157
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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158 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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159 char *linebuff;
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 for (m = as -> macros; m; m = m -> next)
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162 {
372
39490cf2d1c2 Make macro names case insensitive
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diff changeset
163 if (!strcasecmp(opc, m -> name))
0
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164 break;
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165 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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166 // signal no macro expansion
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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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
23b01aa3ecf9 Fixed missing NUL termination in macro expansion
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177 while (**p && !isspace(**p) && **p)
0
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178 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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179 p2 = *p;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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180 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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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 == '\\')
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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183 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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184 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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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 p2++;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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188 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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189
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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190 // have arg here
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191 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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192 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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193 args[nargs][p2 - *p] = '\0';
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194 memcpy(args[nargs], *p, p2 - *p);
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195 *p = p2;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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196
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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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 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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200 if (*p2 == '\\' && p2[1])
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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 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 = *p2;
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 *p3 = '\0';
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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207
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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208 nargs++;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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209 if (**p == ',')
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210 (*p)++;
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211 }
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212
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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213
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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214 // 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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215 // and push it into the front of the input stack
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216 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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217 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
218
bd8b3fbd1e28 Added ability to flag macros as "noexpand" so they are not expanded in the listing
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219 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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220 {
bd8b3fbd1e28 Added ability to flag macros as "noexpand" so they are not expanded in the listing
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diff changeset
221 char ctcbuf[100];
bd8b3fbd1e28 Added ability to flag macros as "noexpand" so they are not expanded in the listing
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222 char *p;
bd8b3fbd1e28 Added ability to flag macros as "noexpand" so they are not expanded in the listing
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223 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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224 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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diff changeset
225 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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226 }
bd8b3fbd1e28 Added ability to flag macros as "noexpand" so they are not expanded in the listing
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diff changeset
227
0
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 (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
e2728091b75a Added a \* macro parameter expansion to include all macro parameters
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233 if (*p2 == '\\' && p2[1] == '*')
e2728091b75a Added a \* macro parameter expansion to include all macro parameters
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234 {
e2728091b75a Added a \* macro parameter expansion to include all macro parameters
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diff changeset
235 int n;
e2728091b75a Added a \* macro parameter expansion to include all macro parameters
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diff changeset
236 /* all arguments */
e2728091b75a Added a \* macro parameter expansion to include all macro parameters
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237 for (n = 0; n < nargs; n++)
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 for (p3 = args[n]; *p3; p3++)
e2728091b75a Added a \* macro parameter expansion to include all macro parameters
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diff changeset
240 {
e2728091b75a Added a \* macro parameter expansion to include all macro parameters
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diff changeset
241 macro_add_to_buff(&linebuff, &bloc, &blen, *p3);
e2728091b75a Added a \* macro parameter expansion to include all macro parameters
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242 }
e2728091b75a Added a \* macro parameter expansion to include all macro parameters
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diff changeset
243 if (n != (nargs -1))
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 macro_add_to_buff(&linebuff, &bloc, &blen, ',');
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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diff changeset
247 }
e2728091b75a Added a \* macro parameter expansion to include all macro parameters
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diff changeset
248 p2++;
e2728091b75a Added a \* macro parameter expansion to include all macro parameters
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diff changeset
249 }
528
4536f0e61425 Add \# macro expansion which expands to the number of arguments
William Astle <lost@l-w.ca>
parents: 524
diff changeset
250 else if (*p2 == '\\' && p2[1] == '#')
4536f0e61425 Add \# macro expansion which expands to the number of arguments
William Astle <lost@l-w.ca>
parents: 524
diff changeset
251 {
4536f0e61425 Add \# macro expansion which expands to the number of arguments
William Astle <lost@l-w.ca>
parents: 524
diff changeset
252 char ctcbuf[25];
4536f0e61425 Add \# macro expansion which expands to the number of arguments
William Astle <lost@l-w.ca>
parents: 524
diff changeset
253 snprintf(ctcbuf, 25, "%d", nargs);
4536f0e61425 Add \# macro expansion which expands to the number of arguments
William Astle <lost@l-w.ca>
parents: 524
diff changeset
254 for (p3 = ctcbuf; *p3; p3++)
4536f0e61425 Add \# macro expansion which expands to the number of arguments
William Astle <lost@l-w.ca>
parents: 524
diff changeset
255 macro_add_to_buff(&linebuff, &bloc, &blen, *p3);
4536f0e61425 Add \# macro expansion which expands to the number of arguments
William Astle <lost@l-w.ca>
parents: 524
diff changeset
256 p2++;
4536f0e61425 Add \# macro expansion which expands to the number of arguments
William Astle <lost@l-w.ca>
parents: 524
diff changeset
257 }
555
bbc600db5016 Add \Ln and {Ln} standing for the length of the specified argument in macros
William Astle <lost@l-w.ca>
parents: 528
diff changeset
258 else if (*p2 == '\\' && (p2[1] == 'L' || p2[1] == 'l') && isdigit(p2[2]))
bbc600db5016 Add \Ln and {Ln} standing for the length of the specified argument in macros
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parents: 528
diff changeset
259 {
bbc600db5016 Add \Ln and {Ln} standing for the length of the specified argument in macros
William Astle <lost@l-w.ca>
parents: 528
diff changeset
260 int n;
bbc600db5016 Add \Ln and {Ln} standing for the length of the specified argument in macros
William Astle <lost@l-w.ca>
parents: 528
diff changeset
261 int clen = 0;
bbc600db5016 Add \Ln and {Ln} standing for the length of the specified argument in macros
William Astle <lost@l-w.ca>
parents: 528
diff changeset
262 char numbuf[10];
bbc600db5016 Add \Ln and {Ln} standing for the length of the specified argument in macros
William Astle <lost@l-w.ca>
parents: 528
diff changeset
263
bbc600db5016 Add \Ln and {Ln} standing for the length of the specified argument in macros
William Astle <lost@l-w.ca>
parents: 528
diff changeset
264 p2 += 2;
bbc600db5016 Add \Ln and {Ln} standing for the length of the specified argument in macros
William Astle <lost@l-w.ca>
parents: 528
diff changeset
265 n = *p2 - '0';
bbc600db5016 Add \Ln and {Ln} standing for the length of the specified argument in macros
William Astle <lost@l-w.ca>
parents: 528
diff changeset
266 if (n == 0)
bbc600db5016 Add \Ln and {Ln} standing for the length of the specified argument in macros
William Astle <lost@l-w.ca>
parents: 528
diff changeset
267 clen = strlen(m -> name);
bbc600db5016 Add \Ln and {Ln} standing for the length of the specified argument in macros
William Astle <lost@l-w.ca>
parents: 528
diff changeset
268 else if (n >= 1 && n <= nargs)
bbc600db5016 Add \Ln and {Ln} standing for the length of the specified argument in macros
William Astle <lost@l-w.ca>
parents: 528
diff changeset
269 clen = strlen(args[n - 1]);
bbc600db5016 Add \Ln and {Ln} standing for the length of the specified argument in macros
William Astle <lost@l-w.ca>
parents: 528
diff changeset
270 snprintf(numbuf, 10, "%d", clen);
bbc600db5016 Add \Ln and {Ln} standing for the length of the specified argument in macros
William Astle <lost@l-w.ca>
parents: 528
diff changeset
271 for (p3 = numbuf; *p3; p3++)
bbc600db5016 Add \Ln and {Ln} standing for the length of the specified argument in macros
William Astle <lost@l-w.ca>
parents: 528
diff changeset
272 macro_add_to_buff(&linebuff, &bloc, &blen, *p3);
bbc600db5016 Add \Ln and {Ln} standing for the length of the specified argument in macros
William Astle <lost@l-w.ca>
parents: 528
diff changeset
273 continue;
bbc600db5016 Add \Ln and {Ln} standing for the length of the specified argument in macros
William Astle <lost@l-w.ca>
parents: 528
diff changeset
274 }
57
e2728091b75a Added a \* macro parameter expansion to include all macro parameters
lost@l-w.ca
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diff changeset
275 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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diff changeset
276 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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277 int n;
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 p2++;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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280 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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diff changeset
281 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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diff changeset
282 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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283 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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284 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
285 continue;
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
286 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
287 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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288 continue;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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289 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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290 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
291 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
292 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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293 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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diff changeset
294 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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295 int n = 0, n2;
555
bbc600db5016 Add \Ln and {Ln} standing for the length of the specified argument in macros
William Astle <lost@l-w.ca>
parents: 528
diff changeset
296 int dolen = 0;
bbc600db5016 Add \Ln and {Ln} standing for the length of the specified argument in macros
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parents: 528
diff changeset
297 char numbuf[10];
bbc600db5016 Add \Ln and {Ln} standing for the length of the specified argument in macros
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parents: 528
diff changeset
298
0
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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299 p2++;
555
bbc600db5016 Add \Ln and {Ln} standing for the length of the specified argument in macros
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parents: 528
diff changeset
300 if (*p2 == 'L' || *p2 == 'l')
bbc600db5016 Add \Ln and {Ln} standing for the length of the specified argument in macros
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parents: 528
diff changeset
301 {
bbc600db5016 Add \Ln and {Ln} standing for the length of the specified argument in macros
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parents: 528
diff changeset
302 dolen = 1;
bbc600db5016 Add \Ln and {Ln} standing for the length of the specified argument in macros
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parents: 528
diff changeset
303 p2++;
bbc600db5016 Add \Ln and {Ln} standing for the length of the specified argument in macros
William Astle <lost@l-w.ca>
parents: 528
diff changeset
304 }
0
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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305 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
306 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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307 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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diff changeset
308 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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diff changeset
309 n2 = 0;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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310 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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311 p2++;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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312 }
524
a4a58c4c7a41 Fix parsing {} macro argument expansion sequences
William Astle <lost@l-w.ca>
parents: 435
diff changeset
313 // compensate for the autoinc on p2 if no } is present
a4a58c4c7a41 Fix parsing {} macro argument expansion sequences
William Astle <lost@l-w.ca>
parents: 435
diff changeset
314 // to prevent overconsuming input characters
a4a58c4c7a41 Fix parsing {} macro argument expansion sequences
William Astle <lost@l-w.ca>
parents: 435
diff changeset
315 if (*p2 != '}')
a4a58c4c7a41 Fix parsing {} macro argument expansion sequences
William Astle <lost@l-w.ca>
parents: 435
diff changeset
316 p2--;
0
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
317
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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318 if (n == 0)
555
bbc600db5016 Add \Ln and {Ln} standing for the length of the specified argument in macros
William Astle <lost@l-w.ca>
parents: 528
diff changeset
319 p3 = m -> name;
bbc600db5016 Add \Ln and {Ln} standing for the length of the specified argument in macros
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parents: 528
diff changeset
320 else if (n < 1 || n > nargs)
bbc600db5016 Add \Ln and {Ln} standing for the length of the specified argument in macros
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parents: 528
diff changeset
321 p3 = "";
bbc600db5016 Add \Ln and {Ln} standing for the length of the specified argument in macros
William Astle <lost@l-w.ca>
parents: 528
diff changeset
322 else
bbc600db5016 Add \Ln and {Ln} standing for the length of the specified argument in macros
William Astle <lost@l-w.ca>
parents: 528
diff changeset
323 p3 = args[n - 1];
bbc600db5016 Add \Ln and {Ln} standing for the length of the specified argument in macros
William Astle <lost@l-w.ca>
parents: 528
diff changeset
324
bbc600db5016 Add \Ln and {Ln} standing for the length of the specified argument in macros
William Astle <lost@l-w.ca>
parents: 528
diff changeset
325 if (dolen)
0
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
326 {
555
bbc600db5016 Add \Ln and {Ln} standing for the length of the specified argument in macros
William Astle <lost@l-w.ca>
parents: 528
diff changeset
327 snprintf(numbuf, 10, "%d", (int)strlen(p3));
bbc600db5016 Add \Ln and {Ln} standing for the length of the specified argument in macros
William Astle <lost@l-w.ca>
parents: 528
diff changeset
328 p3 = numbuf;
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 changeset
329 }
555
bbc600db5016 Add \Ln and {Ln} standing for the length of the specified argument in macros
William Astle <lost@l-w.ca>
parents: 528
diff changeset
330 for (; *p3; p3++)
0
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
331 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
lost@l-w.ca
parents:
diff changeset
332 continue;
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
333 }
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
334 else
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
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 macro_add_to_buff(&linebuff, &bloc, &blen, *p2);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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diff changeset
337 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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diff changeset
338 }
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
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
340 macro_add_to_buff(&linebuff, &bloc, &blen, '\n');
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
341
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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diff changeset
342 }
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
343
49
bd8b3fbd1e28 Added ability to flag macros as "noexpand" so they are not expanded in the listing
lost@l-w.ca
parents: 40
diff changeset
344 if (m -> flags & macro_noexpand)
bd8b3fbd1e28 Added ability to flag macros as "noexpand" so they are not expanded in the listing
lost@l-w.ca
parents: 40
diff changeset
345 {
bd8b3fbd1e28 Added ability to flag macros as "noexpand" so they are not expanded in the listing
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parents: 40
diff changeset
346 char ctcbuf[100];
bd8b3fbd1e28 Added ability to flag macros as "noexpand" so they are not expanded in the listing
lost@l-w.ca
parents: 40
diff changeset
347 char *p;
bd8b3fbd1e28 Added ability to flag macros as "noexpand" so they are not expanded in the listing
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parents: 40
diff changeset
348 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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parents: 40
diff changeset
349 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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parents: 40
diff changeset
350 macro_add_to_buff(&linebuff, &bloc, &blen, *p);
bd8b3fbd1e28 Added ability to flag macros as "noexpand" so they are not expanded in the listing
lost@l-w.ca
parents: 40
diff changeset
351 }
bd8b3fbd1e28 Added ability to flag macros as "noexpand" so they are not expanded in the listing
lost@l-w.ca
parents: 40
diff changeset
352
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
353 {
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
354 char ctcbuf[100];
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
355 char *p;
40
d96037ea0b80 Fixed line number counting being broken by macros
lost@l-w.ca
parents: 39
diff changeset
356 snprintf(ctcbuf, 100, "\001\001SETCONTEXT %d\n\001\001SETLINENO %d\n", oldcontext, cl -> lineno + 1);
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 changeset
357 for (p = ctcbuf; *p; p++)
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parents:
diff changeset
358 macro_add_to_buff(&linebuff, &bloc, &blen, *p);
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
359 }
39
23b01aa3ecf9 Fixed missing NUL termination in macro expansion
lost@l-w.ca
parents: 2
diff changeset
360 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
lost@l-w.ca
parents:
diff changeset
361
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
362 // push the macro into the front of the stream
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
363 input_openstring(as, opc, linebuff);
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
364 lw_free(linebuff);
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
365
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
366 // clean up
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
367 if (args)
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
368 {
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
369 while (nargs)
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
370 {
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
371 lw_free(args[--nargs]);
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
372 }
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
373 lw_free(args);
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
374 }
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
375
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
376 // indicate a macro was expanded
219
afd50d6b4113 Add --preprocess option
William Astle <lost@l-w.ca>
parents: 57
diff changeset
377 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
378 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
379 }