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607
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1 /* Micro-C Preprocessor Part */
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327
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2
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607
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3 /************************************************************************
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4 ** Copyright (C) 2006 Shinji Kono
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5 ** 連絡先： 琉球大学情報工学科 河野 真治
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6 ** （E-Mail Address: kono@ie.u-ryukyu.ac.jp）
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7 **
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8 ** このソースのいかなる複写，改変，修正も許諾します。ただし、
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9 ** その際には、誰が貢献したを示すこの部分を残すこと。
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10 ** 再配布や雑誌の付録などの問い合わせも必要ありません。
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11 ** 営利利用も上記に反しない範囲で許可します。
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12 ** バイナリの配布の際にはversion messageを保存することを条件とします。
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13 ** このプログラムについては特に何の保証もしない、悪しからず。
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14 **
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15 ** Everyone is permitted to do anything on this program
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16 ** including copying, modifying, improving,
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17 ** as long as you don't try to pretend that you wrote it.
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18 ** i.e., the above copyright notice has to appear in all copies.
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19 ** Binary distribution requires original version messages.
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20 ** You don't have to ask before copying, redistribution or publishing.
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21 ** THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE.
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22 ***********************************************************************/
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327
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23 #include <stdio.h>
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24 #include "mc.h"
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25 #include "mc-parse.h"
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26 #include "mc-macro.h"
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456
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27 #include "mc-codegen.h"
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327
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28 #include "mc-code.h"
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29
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30 extern struct {int fd,ln;char *name0;int inc;FILE *fcb;} *filep,filestack[FILES];
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31
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32 int in_macro_if = 0;
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33 char *chinput;
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34
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35 static int mconcat=0;
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36
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37 static void macro_define0();
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346
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38 static int macro_args(char **pchptr);
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327
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39 static int macro_function(int macrop,char **pchptr,NMTBL *nptr,int history);
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40 static void local_define(char *macro,char *value);
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41 static int macro_eval(int macrop,char *body0,int history);
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553
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42 static char * mappend0(int lists,char **result);
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327
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43 static int macro_processing();
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44
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561
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45 /*
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46
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47 macro_expansion(NMTBL *nptrm)
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48 innput macro term (and chptr for arguments)
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49 result put into cheap, and chptr is set.
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50 current ch and chptr are pushed into chptr stack.
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327
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51
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561
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52 ## concatenation requires repeated replace.
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53
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54 In macro_function and macro_eavl,
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55 expand result is put into macrop local variable.
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56 list2("replaced string",next)
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57 to generate result, mappend/reverse0 is necessary.
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58
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363
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59 */
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60
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327
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61 extern void
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62 macro_expansion(NMTBL *nptrm)
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63 {
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64 int i = mode;
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65 int macrop = 0;
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66 int slfree = lfree;
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540
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67 int c;
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68 char *macropp,*s,*t;
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346
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69 struct cheap scheap;
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327
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70 mode = STAT;
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71
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346
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72 save_cheap(&scheap,cheap);
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73
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327
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74 if (nptrm->sc == FMACRO) {
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75 macrop=macro_function(macrop,&chptr,nptrm,0);
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76 } else {
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77 macrop=macro_eval(macrop,(char *)car(nptrm->dsp),0);
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78 }
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347
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79 cheap = reset_cheap(&scheap);
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346
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80 macropp = cheap->ptr;
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561
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81 // append result override, working cheap, but it's OK.
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553
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82 mappend0(reverse0(macrop),¯opp);
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564
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83 // cheap->ptr[-1] ='\n'; // makes some tokenize happy
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84 // ## macro_result needs \n at end
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85 cheap->ptr[-1] = 0; // makes some tokenize happy
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86 t = cheap->ptr-2;
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346
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87 cheap->ptr[0] =0;
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540
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88 cheap = increment_cheap(cheap,¯opp);
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327
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89 while (mconcat) {
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90 // ## re-eval macro
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540
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91 // if (lsrc) printf("## before %s",macropp);
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327
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92 mconcat = 0;
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93 macrop = 0;
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540
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94 // remove \s**##\s*
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561
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95 // it is difficult to remove previous space on the fly,
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96 // so multi path loop is required
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540
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97 for(s=t=macropp;*s;) {
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98 if ((c=*s++)=='#'&&*s=='#') {
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99 if (t>s-3) t=s-2; else t--;
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100 while(*t<=' '&&t>macropp) t--; t++;
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101 for(s++;*s && *s<=' ';) s++;
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102 continue;
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103 }
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104 *t++=c;
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105 }
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106 *t++=0;
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561
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107 // evaluate generated result again
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564
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108 if (lsrc) {
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109 printf("### %s\n",macropp);
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110 if (t[-2]!='\n') putchar('\n');
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111 }
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346
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112 macrop=macro_eval(macrop,macropp,0);
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347
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113 cheap = reset_cheap(&scheap);
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346
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114 macropp = cheap->ptr;
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347
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115 // will not override evaled list
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553
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116 mappend0(reverse0(macrop),¯opp);
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564
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117 // cheap->ptr[-1] ='\n';
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118 cheap->ptr[-1] =0;
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346
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119 cheap->ptr[0] =0;
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540
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120 cheap = increment_cheap(cheap,¯opp);
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327
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121 }
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346
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122 cheap = reset_cheap(&scheap);
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561
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123 // genrated macro will be overwrited by cheap, but it's OK, again
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327
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124 mconcat = 0;
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447
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125 set_lfree(slfree);
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564
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126 if (lsrc && !asmf && nptrm->sc==FMACRO) {
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127 gen_comment(macropp);
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128 if (t[-2]!='\n') putchar('\n');
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129 }
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561
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130 // push previous chptr, and change it to the generate macro
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327
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131 chptrsave = glist2((int)chptr,chptrsave);
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132 chsave = glist2(ch,chsave);
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346
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133 chptr = macropp;
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327
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134 ch = *chptr++;
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135 mode = i;
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136 }
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137
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138 /* file inclusion */
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139
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363
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140 /*
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141 file name concatenation
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561
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142 on cheap
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363
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143 */
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144
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327
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145 static char *
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346
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146 expand_file_name(char *path,char *name)
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327
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147 {
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346
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148 char *p = cheap->ptr;
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149 if (! *path) return name;
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150 while(( *cheap->ptr = *path++ )) cheap = increment_cheap(cheap,&p);
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151 if (cheap->ptr[-1]!='/') {
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152 *cheap->ptr = '/'; cheap = increment_cheap(cheap,&p);
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153 }
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154 while(( *cheap->ptr = *name++ )) cheap = increment_cheap(cheap,&p);
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351
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155 *cheap->ptr = 0;
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156 cheap = increment_cheap(cheap,&p);
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327
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157 return p;
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158 }
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159
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363
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160 /*
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161 get file name
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162 <name> => name
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163 current_file_name_dir / name
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164 libdir / name
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165 "name" => name
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166 current_file_name_dir / name
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167 include_path / name
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561
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168 (no difference?)
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169 next flag ignores the first occurence.
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363
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170 */
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171
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540
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172 static int
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173 nameeq(char *p, char *q)
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174 {
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175 if (!p)
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176 return 0;
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177 while(*p)
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178 if(*p++ != *q++) return 0;
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179 return (*q==0);
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180 }
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181
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327
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182 static FILE *
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469
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183 getfname(int next)
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327
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184 {
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185 int i,end='"',err=0;
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540
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186 char *s,*p,**pp,*name,*prev=0;
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327
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187 FILE *fp;
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346
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188 struct cheap scheap;
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189 name = cheap->ptr;
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327
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190
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191 getch();
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192 if(skipspc()=='"') { end = '"';
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193 } else if (ch=='<') { end = '>';
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194 } else { error(INCERR); err=1;
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195 }
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196 for(i=0;(getch()!=end && ch!='\n');) {
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346
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197 *cheap->ptr = ch;
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198 cheap = increment_cheap(cheap,&name);
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327
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199 }
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200 if(ch=='\n') error(INCERR);
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201 if (err) return filep->fcb;
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351
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202 *cheap->ptr = 0;
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203 cheap = increment_cheap(cheap,&name);
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204 save_cheap(&scheap,cheap);
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327
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205 fp = fopen(name,"r") ;
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540
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206 if (next && fp) { fclose(fp); fp=0; next=0; prev=name; }
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327
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207 if (fp) {
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208 p = name;
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209 } else {
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556
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210 // no deferenced on "" and <>?
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211 for(pp=include_path; *pp;pp++) {
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346
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212 p = expand_file_name(*pp,name);
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540
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213 if(prev && nameeq(p,prev)) continue;
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469
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214 if ((fp = fopen(p,"r"))) {
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215 if (next) {
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540
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216 fclose(fp); fp=0; next=0; prev=p;
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469
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217 continue;
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218 } else
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219 break ;
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220 }
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327
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221 }
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556
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222 if (!fp /* && (end=='>'||filep->inc=='>') */ ) { // <> case only
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539
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223 for(pp=l_include_path; *pp;pp++) {
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224 p = expand_file_name(*pp,name);
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540
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225 if(prev && nameeq(p,prev)) continue;
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539
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226 if ((fp = fopen(p,"r"))) {
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227 if (next) {
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540
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228 fclose(fp); fp=0; next=0; prev=p;
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539
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229 continue;
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230 } else
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231 break ;
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232 }
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233 }
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234 }
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327
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235 }
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236 if(!fp) { error(FILERR); return filep->fcb; }
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561
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237 // we have so search current directory of the included file
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238 // keep track the name
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327
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239 copy_current_file_dir(s=p);
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351
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240 // File name determined. Dispose extra copies.
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241 cheap = reset_cheap(&scheap);
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561
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242 // Generated name needs copy.
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346
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243 if (p!=name) {
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244 name = cheap->ptr;
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245 while((*cheap->ptr = *s++)) cheap = increment_cheap(cheap,&name);
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351
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246 *cheap->ptr = 0;
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247 cheap = increment_cheap(cheap,&name);
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346
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248 }
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327
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249 (filep+1)->inc = end;
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346
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250 (filep+1)->name0 = name;
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327
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251 return ( (filep+1)->fcb = fp );
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252 }
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253
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254 /* line input and conversion */
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255
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256 static int macro_if_depth ;
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257 static int macro_if_current ;
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258 static int macro_if_skip ;
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259
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363
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260 /* there may extra non-terminate comment after #if/#else directive */
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364
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261 /* #endif / * hoge */
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363
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262 /* */
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263 /* */
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264
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327
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265 static int
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266 skip_rest_of_line()
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267 {
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268 getch();
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269 do {
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270 while(ch!='\n'&&ch!='\r') {
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271 if (!in_comment) {
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272 if (ch=='/') {
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273 getch();
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274 if (ch=='/') in_comment=2;
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275 else if (ch=='*') {
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276 in_comment=1;
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277 } else continue;
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278 }
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279 } else if (ch=='*') {
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280 getch();
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281 if (ch=='/') {
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282 in_comment=0;
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283 return macro_if_skip?0:1;
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284 }
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285 else continue;
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286 }
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287 getch();
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288 }
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289 if (in_comment==1) { getline(); getch(); }
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290 } while(in_comment==1);
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291 in_comment=0;
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292 return 0;
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293 }
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294
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363
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295 /*
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296 getline from chptr or chinput (for internal source)
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297 with macro processing
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561
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298 generate comment
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299 generate ST_COMMENT parse tree, in inline mode
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300 In getch, if chptr is empty, pop chptr stack, if stack is empy
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301 read from fp.
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363
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302 */
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303
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343
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304 static int next_eof;
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560
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305 struct cheap *st_cheap, *cheap1;
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306 // ST_COMMENT may interfere with other inrement_cheap, so we use
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307 // another cheap area.
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343
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308
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327
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309 extern void
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310 getline(void)
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311 {
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312 int i;
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313 int c;
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455
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314 char num[10];
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327
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315
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343
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316 if (next_eof) {
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317 next_eof=0;
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318 error(EOFERR);
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319 }
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327
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320 do {
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321 if (chinput) {
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322 if (! *chinput) {
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323 chinput=0;
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324 continue;
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325 }
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326 chptr=linebuf;
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327 i=0;
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328 while((*chptr++=c=*chinput++)&&(c!='\n')) {
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329 if (++i > LBUFSIZE-2) error(LNERR);
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330 }
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331 } else {
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332 lineno++;
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333 glineno++;
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334 chptr=linebuf;
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335 i=0;
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336 while ((*chptr++ = c = getc(filep->fcb)) != '\n') {
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337 if (++i > LBUFSIZE-2) error(LNERR);
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338 if (c==EOF) {
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343
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339 next_eof=1;
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340 --chptr;
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341 break;
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327
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342 }
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343 }
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344 }
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345 *chptr = '\0';
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455
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346 if (lsrc && !asmf && !macro_if_skip && linebuf[0]) {
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347 gen_comment(linebuf);
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348 if (inmode) {
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561
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349 // inline mode
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455
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350 int i=0;
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351 int c;
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560
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352 char *p;
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353 // should be done in some init
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354 if (!st_cheap) {
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355 st_cheap = cheap1 = new_cheap();
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356 }
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357
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358 p = st_cheap->ptr;
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455
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359 sprintf(num,"%d: ",lineno);
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509
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360 parse = list3(ST_COMMENT,parse,(int)p);
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361 // should contain file name
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455
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362 c = 0;
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560
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363 while((*st_cheap->ptr = num[c++]))
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364 st_cheap = increment_cheap(st_cheap,&p);
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365 while((c = *st_cheap->ptr = linebuf[i++])) {
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366 st_cheap = increment_cheap(st_cheap,&p);
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455
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367 if (c=='\n') {
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560
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368 *st_cheap->ptr = 0;
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369 st_cheap = increment_cheap(st_cheap,&p);
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370 p = st_cheap->ptr;
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509
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371 // parse = list3(ST_COMMENT,parse,(int)p);
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455
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372 sprintf(num,"%d: ",lineno);
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373 c = 0;
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374 while((*cheap->ptr = num[c++]))
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560
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375 st_cheap = increment_cheap(st_cheap,&p);
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455
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376 }
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377 }
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378 }
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379 }
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327
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380 if (*(chptr = linebuf) == '#' && !in_comment && !in_quote) {
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381 if (macro_processing()) return;
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382 }
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383 } while(!in_quote && (macro_if_skip || linebuf[0] == '#'));
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384 }
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385
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386 /* preprocessor directive */
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387
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388 /* line continuation \\ */
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389
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390 extern void
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391 check_macro_eof()
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392 {
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|
|
393 int c;
|
|
346
|
394 // can't be in macro expansion
|
|
327
|
395 for(c=0;c<LBUFSIZE-3&&chptr[c];c++);
|
|
|
396 if (c>0&&chptr[c-1]=='\\') {
|
|
|
397 return;
|
|
|
398 } else if (c>0&&chptr[c-1]=='\n') {
|
|
|
399 if (c>0&&chptr[c-2]=='\\') {
|
|
|
400 return;
|
|
|
401 } else {
|
|
|
402 c--;
|
|
|
403 }
|
|
|
404 }
|
|
|
405 chptr[c] = ';';
|
|
|
406 chptr[c+1] = '\n';
|
|
|
407 chptr[c+2] = 0;
|
|
|
408 }
|
|
|
409
|
|
363
|
410 /* #if hoge case */
|
|
|
411
|
|
327
|
412 static void
|
|
|
413 macro_if()
|
|
|
414 {
|
|
599
|
415 int i,stype=type; // expr destroy type
|
|
327
|
416 ch= *chptr;
|
|
599
|
417 in_macro_if = 1; // makes undefined symbol==list2(CONST,0)
|
|
327
|
418 check_macro_eof();
|
|
|
419 getsym(0);
|
|
|
420 /* i=cexpr(expr(1)); #if allow undefined symbols.. */
|
|
|
421 i=expr(1);
|
|
|
422 in_macro_if = 0;
|
|
|
423 if (car(i)==CONST) i=cadr(i);
|
|
|
424 else i=0;
|
|
|
425 if (ch) {
|
|
|
426 if (chptr[-1]==ch) {
|
|
|
427 /* we are fall into getch(), which lost the last ch */
|
|
|
428 /* chptr[-1]==ch check is fanatic, but ... */
|
|
|
429 chptr--;
|
|
|
430 } else error(-1);
|
|
|
431 }
|
|
|
432 macro_if_depth = macro_if_current;
|
|
|
433 macro_if_skip = !i;
|
|
591
|
434 type=stype;
|
|
327
|
435 }
|
|
|
436
|
|
|
437 static int
|
|
|
438 macro_processing()
|
|
|
439 {
|
|
|
440 int i;
|
|
569
|
441 int c=0;
|
|
327
|
442 int mode_save;
|
|
469
|
443 int next;
|
|
327
|
444
|
|
|
445 ++chptr;
|
|
|
446 while (*chptr==' '||*chptr=='\t') ++chptr;
|
|
361
|
447 switch(chptr[0]*chptr[1]) {
|
|
|
448 case 'i'*'f':
|
|
|
449 if ((macroeq("ifdef") || macroeq("ifndef"))) {
|
|
|
450 c = (chptr[-4]=='n');
|
|
|
451 macro_if_current++;
|
|
|
452 if (!macro_if_skip) {
|
|
561
|
453 // try getsym in IFDEF mode to avoid symbol define
|
|
361
|
454 mode_save = mode; mode = IFDEF;
|
|
|
455 ch= *chptr;
|
|
|
456 i = getsym(0);
|
|
|
457 mode = mode_save;
|
|
|
458 macro_if_depth = macro_if_current;
|
|
|
459 macro_if_skip = (!i)^c;
|
|
|
460 }
|
|
327
|
461 return 0;
|
|
361
|
462 } else if (macroeq("if")) {
|
|
|
463 macro_if_current++;
|
|
|
464 if (!macro_if_skip) {
|
|
|
465 macro_if();
|
|
327
|
466 }
|
|
|
467 return 0;
|
|
|
468 }
|
|
361
|
469 break;
|
|
|
470 case 'e'*'l':
|
|
|
471 if (macroeq("elif")) {
|
|
|
472 if (macro_if_current==0) {
|
|
|
473 error(MCERR); /* extra #else */
|
|
|
474 return 0;
|
|
|
475 }
|
|
|
476 if (macro_if_current == macro_if_depth) {
|
|
|
477 if (!macro_if_skip || macro_if_skip==2) {
|
|
|
478 macro_if_skip=2;
|
|
|
479 return 0;
|
|
|
480 }
|
|
|
481 macro_if();
|
|
|
482 }
|
|
|
483 return 0;
|
|
|
484 } else if (macroeq("else")) {
|
|
|
485 if (macro_if_current==0) {
|
|
|
486 error(MCERR); /* extra #else */
|
|
327
|
487 return 0;
|
|
|
488 }
|
|
361
|
489 if (macro_if_current == macro_if_depth) {
|
|
|
490 if (macro_if_skip==2) ;
|
|
|
491 else if (macro_if_skip) macro_if_skip=0;
|
|
|
492 else macro_if_skip=1;
|
|
|
493 }
|
|
|
494 return skip_rest_of_line();
|
|
327
|
495 }
|
|
361
|
496 break;
|
|
|
497 case 'e'*'n':
|
|
|
498 if (macroeq("endif")) {
|
|
|
499 if (macro_if_current == macro_if_depth) {
|
|
|
500 macro_if_skip = 0;
|
|
|
501 macro_if_depth = --macro_if_current;
|
|
|
502 } else {
|
|
|
503 if (macro_if_current<=0) {
|
|
|
504 error(MCERR); /* extra #if */
|
|
|
505 return 0;
|
|
|
506 }
|
|
|
507 macro_if_current--;
|
|
|
508 }
|
|
|
509 return skip_rest_of_line();
|
|
|
510 }
|
|
327
|
511 }
|
|
|
512 if (macro_if_skip) return 0;
|
|
361
|
513 switch(chptr[0]) {
|
|
|
514 case 'd':
|
|
|
515 if (macroeq("define")) {
|
|
|
516 ch= *chptr;
|
|
|
517 macro_define0();
|
|
|
518 *(chptr = linebuf) = '\0';
|
|
|
519 return 0;
|
|
|
520 }
|
|
|
521 break;
|
|
|
522 case 'u':
|
|
|
523 if (macroeq("undef")) {
|
|
|
524 i=mode;
|
|
|
525 mode=IFDEF;
|
|
|
526 ch= *chptr;
|
|
|
527 if (getsym(0)) {
|
|
561
|
528 // make it EMPTY
|
|
361
|
529 if (nptr->sc == MACRO) {
|
|
|
530 nptr->sc = EMPTY;
|
|
|
531 } else if (nptr->sc == FMACRO) {
|
|
|
532 nptr->sc = EMPTY;
|
|
|
533 /* we cannot reclaim it's arg */
|
|
|
534 } else error(MCERR);
|
|
|
535 }
|
|
|
536 mode=i;
|
|
|
537 return 0;
|
|
327
|
538 }
|
|
361
|
539 break;
|
|
|
540 case 'i':
|
|
469
|
541 next = 1;
|
|
|
542 if (macroeq("include_next")|| (next=0, macroeq("include"))) {
|
|
361
|
543 if(filep+1 >= filestack + FILES) error(FILERR);
|
|
469
|
544 if ( ((filep+1)->fcb=getfname(next)) == NULL) error(FILERR);
|
|
361
|
545 (filep+1)->ln=lineno;
|
|
|
546 lineno=0;
|
|
|
547 ++filep;
|
|
|
548 *(chptr = linebuf) = '\0';
|
|
|
549 return 0;
|
|
|
550 }
|
|
|
551 break;
|
|
327
|
552 #if ASM_CODE
|
|
561
|
553 // deprecated, use asm function
|
|
361
|
554 case 'a':
|
|
|
555 if (c=='a'&¯oeq("asm")) {
|
|
|
556 if (asmf) error(MCERR);
|
|
|
557 asmf = 1;
|
|
327
|
558 getline();
|
|
361
|
559 while (asmf) {
|
|
561
|
560 printf("%s",linebuf);
|
|
361
|
561 getline();
|
|
|
562 }
|
|
|
563 return 0;
|
|
327
|
564 }
|
|
361
|
565 break;
|
|
|
566 case 'e':
|
|
|
567 if (macroeq("endasm")) {
|
|
|
568 if (!asmf) error(MCERR);
|
|
|
569 asmf = 0;
|
|
|
570 return 0;
|
|
|
571 }
|
|
|
572 break;
|
|
327
|
573 #endif
|
|
361
|
574 case ' ': case '\t':
|
|
327
|
575 getline();
|
|
361
|
576 return 0;
|
|
|
577 }
|
|
|
578 error(MCERR);
|
|
327
|
579 return 0;
|
|
|
580 }
|
|
|
581
|
|
|
582 extern int
|
|
|
583 macroeq(char *s)
|
|
|
584 {
|
|
|
585 char *p;
|
|
|
586
|
|
|
587 for (p = chptr; *s;) if (*s++ != *p++) return 0;
|
|
|
588 chptr = p;
|
|
|
589 return 1;
|
|
|
590 }
|
|
|
591
|
|
|
592 /* macro interpreter */
|
|
|
593
|
|
561
|
594 /* generate macro define */
|
|
|
595
|
|
327
|
596 extern void
|
|
|
597 macro_define(char *macro)
|
|
|
598 {
|
|
|
599 char *chptr_save;
|
|
|
600 int chsave;
|
|
|
601
|
|
|
602 chptr_save = chptr;
|
|
|
603 chsave = ch;
|
|
|
604 chptr = macro;
|
|
|
605 ch= *chptr++;
|
|
|
606 macro_define0();
|
|
|
607 chptr = chptr_save;
|
|
|
608 ch = chsave;
|
|
|
609 }
|
|
|
610
|
|
363
|
611 /* macro define from chptr */
|
|
|
612
|
|
327
|
613 static void
|
|
|
614 macro_define0()
|
|
|
615 {
|
|
|
616 int i,args,c;
|
|
346
|
617 char **body;
|
|
327
|
618
|
|
|
619 i=mode;
|
|
|
620 mode=MDECL;
|
|
|
621 // ch= *chptr; ??
|
|
|
622 // fprintf(stderr,"macro def: ch %c *chptr %c\n",ch,*chptr);
|
|
|
623 getsym(0);
|
|
|
624 // fprintf(stderr,"macro def: %s =>",name);
|
|
|
625 if (nptr->sc != EMPTY) { /* override existing macro */
|
|
|
626 }
|
|
|
627 args = 0;
|
|
|
628 if (ch=='(') {
|
|
|
629 nptr->sc = FMACRO;
|
|
346
|
630 args = macro_args(&chptr);
|
|
327
|
631 } else {
|
|
|
632 nptr->sc = MACRO;
|
|
|
633 nptr->ty = -1;
|
|
|
634 }
|
|
|
635 // equal is allowed for -Dhoge=aho option
|
|
534
|
636 // if (ch=='=') chptr++;
|
|
327
|
637 while((c=*chptr)==' '||c=='\t') chptr++;
|
|
346
|
638 nptr->dsp = list2((int)cheap->ptr,args); /* macro body */
|
|
|
639 body = (char **)&car(nptr->dsp);
|
|
561
|
640
|
|
|
641 // now copy it to the body
|
|
346
|
642 while ((*cheap->ptr = c = *chptr++)
|
|
327
|
643 && c != '\n') {
|
|
346
|
644 cheap = increment_cheap(cheap,body);
|
|
327
|
645 if (c=='/'&&chptr[0]=='/') {
|
|
351
|
646 cheap->ptr--;
|
|
|
647 *cheap->ptr = '\0';
|
|
|
648 while(*chptr++); break;
|
|
327
|
649 } else if (c=='/'&&chptr[0]=='*') {
|
|
346
|
650 cheap->ptr--; chptr++;
|
|
327
|
651 while((c = *chptr++)) {
|
|
|
652 if (c=='*'&&chptr[0]=='/') {
|
|
|
653 c = *chptr++; break;
|
|
|
654 }
|
|
|
655 }
|
|
|
656 if (!c) break;
|
|
|
657 } else if (c=='\\' && (*chptr=='\n'||*chptr==0)) {
|
|
|
658 chptr++;
|
|
346
|
659 cheap->ptr--;
|
|
327
|
660 getline();
|
|
|
661 }
|
|
|
662 }
|
|
346
|
663 if (c=='\n') {
|
|
|
664 *cheap->ptr = '\0';
|
|
|
665 }
|
|
|
666 cheap = increment_cheap(cheap,body);
|
|
327
|
667 // fprintf(stderr,"%s\n",(char *)car(nptr->dsp));
|
|
|
668 mode=i;
|
|
|
669 }
|
|
|
670
|
|
|
671 // create function macro argument list
|
|
|
672 // return list2((char*)arg,next)
|
|
|
673
|
|
|
674 static int
|
|
346
|
675 macro_args(char **pchptr)
|
|
327
|
676 {
|
|
|
677 int c;
|
|
|
678 int in_quote = 0;
|
|
|
679 int in_wquote = 0;
|
|
|
680 int plevel = 0;
|
|
346
|
681 char **body;
|
|
327
|
682 char *chptr = *pchptr;
|
|
346
|
683 int args = list2((int)cheap->ptr,0);
|
|
|
684 body = (char **)&car(args);
|
|
327
|
685 for(;;) {
|
|
346
|
686 *cheap->ptr = c = *chptr++;
|
|
|
687 cheap = increment_cheap(cheap,body);
|
|
539
|
688 if (c=='\\') {
|
|
|
689 if (*chptr=='\n') {
|
|
|
690 cheap->ptr--;
|
|
|
691 getline();
|
|
|
692 chptr = *pchptr;
|
|
|
693 continue;
|
|
|
694 }
|
|
|
695 }
|
|
327
|
696 if (!c) {
|
|
|
697 chptr--;
|
|
|
698 error(MCERR);
|
|
|
699 *pchptr = chptr;
|
|
|
700 return reverse0(args);
|
|
|
701 }
|
|
|
702 if (in_quote) {
|
|
|
703 if (c=='\\') {
|
|
|
704 if (*chptr != '\n') {
|
|
346
|
705 *cheap->ptr = *chptr++;
|
|
|
706 cheap = increment_cheap(cheap,body);
|
|
327
|
707 } else {
|
|
|
708 getline();
|
|
539
|
709 chptr = *pchptr;
|
|
327
|
710 }
|
|
|
711 } else if (c=='\'') {
|
|
|
712 in_quote = 0;
|
|
|
713 }
|
|
|
714 } else if (in_wquote) {
|
|
|
715 if (c=='\\') {
|
|
|
716 if (*chptr !='\n') {
|
|
346
|
717 *cheap->ptr = *chptr++;
|
|
|
718 cheap = increment_cheap(cheap,body);
|
|
327
|
719 } else {
|
|
346
|
720 *cheap->ptr = '\n';
|
|
327
|
721 getline();
|
|
539
|
722 chptr = *pchptr;
|
|
327
|
723 }
|
|
|
724 } else if (c=='"') {
|
|
|
725 in_wquote = 0;
|
|
|
726 }
|
|
|
727 } else if (c=='"') {
|
|
|
728 in_wquote = 1;
|
|
|
729 } else if (c=='\'') {
|
|
|
730 in_quote = 1;
|
|
|
731 } if (plevel==0) {
|
|
|
732 if (c==',') {
|
|
346
|
733 cheap->ptr[-1] = 0;
|
|
|
734 args = list2((int)cheap->ptr,args);
|
|
|
735 body = (char **)&car(args);
|
|
327
|
736 } else if (c==')') {
|
|
346
|
737 cheap->ptr[-1] = 0;
|
|
327
|
738 break;
|
|
|
739 } else if (c=='(') {
|
|
|
740 plevel++;
|
|
|
741 } else if (c=='\\') {
|
|
|
742 if (*chptr=='\n') {
|
|
346
|
743 cheap->ptr--;
|
|
327
|
744 getline();
|
|
539
|
745 chptr = *pchptr;
|
|
327
|
746 }
|
|
|
747 // } else if (c==' '||c=='\t') {
|
|
346
|
748 // cheap->ptr--;
|
|
327
|
749 } else if (c=='\n') {
|
|
346
|
750 cheap->ptr--;
|
|
327
|
751 getline();
|
|
|
752 chptr = *pchptr;
|
|
|
753 }
|
|
|
754 } else if (c==')') {
|
|
|
755 plevel--;
|
|
|
756 } else if (c=='(') {
|
|
|
757 plevel++;
|
|
|
758 } else if (c=='\n') {
|
|
346
|
759 cheap->ptr--;
|
|
327
|
760 getline();
|
|
|
761 chptr = *pchptr;
|
|
|
762 }
|
|
|
763 }
|
|
|
764 *pchptr = chptr;
|
|
|
765 return reverse0(args);
|
|
|
766 }
|
|
|
767
|
|
|
768 /* output macro expansion result into macrobuf (macropp) */
|
|
|
769
|
|
|
770 static int
|
|
|
771 macro_function(int macrop,char **pchptr,NMTBL *nptr,int history)
|
|
|
772 {
|
|
|
773 int args,sargs,values,evalues;
|
|
|
774 char *macro;
|
|
|
775
|
|
561
|
776 // make argument list
|
|
327
|
777 sargs = args = cadr(nptr->dsp);
|
|
346
|
778 values = macro_args(pchptr);
|
|
327
|
779 if (pchptr==&chptr) {
|
|
|
780 ch = *chptr++;
|
|
|
781 }
|
|
561
|
782 // eval all argument list
|
|
327
|
783 evalues = 0;
|
|
|
784 while(values) {
|
|
|
785 evalues = list2(macro_eval(0,(char *)car(values),history),evalues);
|
|
|
786 values = cadr(values);
|
|
|
787 }
|
|
561
|
788 // define all arguments locally
|
|
|
789 // #define arg0 arg0_value
|
|
|
790 // #define arg1 arg2_value ....
|
|
327
|
791 evalues = reverse0(evalues);
|
|
359
|
792 enter_scope();
|
|
327
|
793 while(args) {
|
|
553
|
794 mappend0(reverse0(car(evalues)),¯o);
|
|
346
|
795 local_define((char *)car(args),macro);
|
|
327
|
796 args = cadr(args);
|
|
|
797 evalues = cadr(evalues);
|
|
|
798 }
|
|
561
|
799 // process body replacement
|
|
327
|
800 macro = (char *)car(nptr->dsp);
|
|
|
801 macrop = macro_eval(macrop,macro,list2((int)macro,history));
|
|
|
802 args = sargs;
|
|
561
|
803 // unbind arguments
|
|
359
|
804 leave_scope();
|
|
327
|
805 return macrop;
|
|
|
806 }
|
|
|
807
|
|
|
808 static void
|
|
|
809 local_define(char *macro,char *value)
|
|
|
810 {
|
|
359
|
811 NMTBL *nptr0,*nlist;
|
|
327
|
812 while(*macro==' '||*macro=='\t') macro++;
|
|
359
|
813 nptr0 = name_space_search(nlist=get_name(macro,0,DEF),MACRO);
|
|
|
814 nptr0 = make_local_scope(nlist,nptr0,MACRO);
|
|
|
815 nptr0->nm = value;
|
|
327
|
816 }
|
|
|
817
|
|
363
|
818 /*
|
|
|
819 Evaluate macro string.
|
|
|
820 reuslt: list2("replaced string",next)
|
|
561
|
821 history is necessary to avoid recursion
|
|
363
|
822 */
|
|
|
823
|
|
327
|
824 static int
|
|
|
825 macro_eval(int macrop,char *body0,int history)
|
|
|
826 {
|
|
350
|
827 int c,len;
|
|
327
|
828 int in_quote = 0;
|
|
|
829 int in_wquote = 0;
|
|
|
830 char *macro;
|
|
|
831 char *body = body0;
|
|
346
|
832 char **expand;
|
|
327
|
833 NMTBL *nptrm;
|
|
346
|
834 macrop = list2((int)cheap->ptr,macrop);
|
|
|
835 expand = (char **)&car(macrop);
|
|
327
|
836 for(; (c = *body++) ;) {
|
|
|
837 if (in_quote) {
|
|
|
838 if (c=='\\') {
|
|
346
|
839 *cheap->ptr = c; c = *body++;
|
|
|
840 cheap = increment_cheap(cheap,expand);
|
|
327
|
841 } else if (c=='\'') {
|
|
|
842 in_quote = 0;
|
|
|
843 }
|
|
|
844 } else if (in_wquote) {
|
|
|
845 if (c=='\\') {
|
|
346
|
846 *cheap->ptr = c; c = *body++;
|
|
|
847 cheap = increment_cheap(cheap,expand);
|
|
327
|
848 } else if (c=='"') {
|
|
|
849 in_wquote = 0;
|
|
|
850 }
|
|
|
851 } else if (c=='"') {
|
|
|
852 in_wquote = 1;
|
|
|
853 } else if (c=='\'') {
|
|
|
854 in_quote = 1;
|
|
|
855 } else if (c=='#' && *body=='#') {
|
|
540
|
856 mconcat = 1;
|
|
561
|
857 // name concatenation. flag only. remove and re-evaluate
|
|
540
|
858 // in the top level. (and skip space)
|
|
327
|
859 } else if (alpha(c)) {
|
|
561
|
860 // find a name
|
|
349
|
861 body--; // ungetc
|
|
350
|
862 nptrm = get_name(body,&len,NONDEF);
|
|
|
863 if (!nptrm) {
|
|
|
864 while((*cheap->ptr = *body++) && len--)
|
|
|
865 cheap = increment_cheap(cheap,expand);
|
|
|
866 body--;
|
|
|
867 continue;
|
|
|
868 }
|
|
|
869 body += len;
|
|
349
|
870 c = *body;
|
|
347
|
871 nptrm = name_space_search(nptrm,MACRO);
|
|
327
|
872 macro = (char *)car(nptrm->dsp);
|
|
561
|
873 // if (check_recurse(macro,history)) goto skip;
|
|
347
|
874 switch(nptrm->sc) {
|
|
|
875 case FMACRO:
|
|
327
|
876 if (c==' '||c=='\t') {
|
|
|
877 while (c==' '||c=='\t') c=*body++;
|
|
|
878 body--;
|
|
|
879 }
|
|
|
880 if(c!='(') error(MCERR);
|
|
349
|
881 *cheap->ptr = 0;
|
|
346
|
882 cheap = increment_cheap(cheap,expand);
|
|
|
883 body++;
|
|
327
|
884 macrop = macro_function(macrop,&body,nptrm,
|
|
|
885 list2((int)macro,history));
|
|
346
|
886 macrop = list2((int)cheap->ptr,macrop);
|
|
|
887 expand = (char **)&(car(macrop));
|
|
347
|
888 break;
|
|
|
889 case MACRO:
|
|
|
890 if (neqname(nptrm->nm,macro)) {
|
|
|
891 if (macro[0]==0) continue;
|
|
|
892 *cheap->ptr = 0;
|
|
|
893 cheap = increment_cheap(cheap,expand);
|
|
|
894 macrop=macro_eval(macrop,macro,list2((int)macro,history));
|
|
|
895 macrop = list2((int)cheap->ptr,macrop);
|
|
|
896 expand = (char **)&(car(macrop));
|
|
|
897 break;
|
|
|
898 }
|
|
|
899 default:
|
|
346
|
900 macro = nptrm->nm;
|
|
561
|
901 // skip:
|
|
347
|
902 case LMACRO:
|
|
349
|
903 while((*cheap->ptr = *macro++)/* && len-- */)
|
|
346
|
904 cheap = increment_cheap(cheap,expand);
|
|
327
|
905 }
|
|
|
906 continue;
|
|
|
907 }
|
|
346
|
908 *cheap->ptr = c;
|
|
|
909 cheap = increment_cheap(cheap,expand);
|
|
327
|
910 }
|
|
346
|
911 *cheap->ptr = 0;
|
|
|
912 cheap = increment_cheap(cheap,expand);
|
|
327
|
913 return macrop;
|
|
|
914 }
|
|
|
915
|
|
363
|
916 /*
|
|
|
917 cancat list2("string",next) into cheap.
|
|
|
918 result overwrited by next cheap allocation
|
|
|
919 */
|
|
327
|
920
|
|
553
|
921 static char *
|
|
|
922 mappend0(int lists,char **result)
|
|
327
|
923 {
|
|
|
924 char *p;
|
|
346
|
925 *result = cheap->ptr;
|
|
348
|
926 for(;lists;lists = cadr(lists)) {
|
|
327
|
927 p = (char *)car(lists);
|
|
347
|
928 for(;(*cheap->ptr=*p++);cheap = increment_cheap(cheap,0)) {
|
|
346
|
929 // in_quote + \n case ? should be \n.
|
|
350
|
930 if (p[-1]=='\n') cheap->ptr[0]=' ';
|
|
346
|
931 }
|
|
327
|
932 }
|
|
347
|
933 cheap = increment_cheap(cheap,0);
|
|
346
|
934 return *result;
|
|
327
|
935 }
|
|
|
936
|
|
553
|
937 // do not replace \n
|
|
|
938 extern char *
|
|
|
939 mappend(int lists,char **result)
|
|
|
940 {
|
|
|
941 char *p;
|
|
|
942 *result = cheap->ptr;
|
|
|
943 for(;lists;lists = cadr(lists)) {
|
|
|
944 p = (char *)car(lists);
|
|
|
945 for(;(*cheap->ptr=*p++);cheap = increment_cheap(cheap,0)) {
|
|
|
946 // in_quote + \n case ? should be \n.
|
|
|
947 // if (p[-1]=='\n') cheap->ptr[0]=' ';
|
|
|
948 }
|
|
|
949 }
|
|
|
950 cheap = increment_cheap(cheap,0);
|
|
|
951 return *result;
|
|
|
952 }
|
|
|
953
|
|
327
|
954 /* end */
|
