Mercurial > projects > ldc
annotate dmd2/macro.c @ 972:d66ab756c75b
Change the way the version is printed (more verbose, with short hash)
If the user has patches managed by the mq extension, the version and hash
printed are those of the qparent revision (the revision the patches were
applied on top of) instead of tip.
Also fixes a bug: print LLVM revision even if there are local modifications to
it.
Sorry for the long line in the perl file. I have no idea how to break it up.
author | Frits van Bommel <fvbommel wxs.nl> |
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date | Tue, 17 Feb 2009 01:13:18 +0100 |
parents | f04dde6e882c |
children | 638d16625da2 |
rev | line source |
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758
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1 |
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2 // Copyright (c) 1999-2006 by Digital Mars |
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3 // All Rights Reserved |
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4 // written by Walter Bright |
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5 // http://www.digitalmars.com |
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6 // License for redistribution is by either the Artistic License |
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7 // in artistic.txt, or the GNU General Public License in gnu.txt. |
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8 // See the included readme.txt for details. |
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9 |
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10 /* Simple macro text processor. |
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11 */ |
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12 |
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13 #include <stdio.h> |
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14 #include <string.h> |
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15 #include <time.h> |
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16 #include <ctype.h> |
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17 #include <assert.h> |
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18 |
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19 #if IN_GCC || IN_LLVM |
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20 #include "mem.h" |
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21 #else |
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22 #if _WIN32 |
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23 #include "..\root\mem.h" |
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24 #elif POSIX |
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25 #include "../root/mem.h" |
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26 #else |
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27 #error "fix this" |
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28 #endif |
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29 #endif |
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30 |
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31 #include "root.h" |
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32 #include "macro.h" |
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33 |
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34 #define isidstart(c) (isalpha(c) || (c) == '_') |
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35 #define isidchar(c) (isalnum(c) || (c) == '_') |
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36 |
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37 unsigned char *memdup(unsigned char *p, size_t len) |
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38 { |
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39 return (unsigned char *)memcpy(mem.malloc(len), p, len); |
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40 } |
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41 |
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42 Macro::Macro(unsigned char *name, size_t namelen, unsigned char *text, size_t textlen) |
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43 { |
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44 next = NULL; |
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45 |
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46 #if 1 |
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47 this->name = name; |
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48 this->namelen = namelen; |
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49 |
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50 this->text = text; |
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51 this->textlen = textlen; |
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52 #else |
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53 this->name = name; |
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54 this->namelen = namelen; |
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55 |
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56 this->text = text; |
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57 this->textlen = textlen; |
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58 #endif |
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59 inuse = 0; |
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60 } |
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61 |
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62 |
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63 Macro *Macro::search(unsigned char *name, size_t namelen) |
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64 { Macro *table; |
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65 |
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66 //printf("Macro::search(%.*s)\n", namelen, name); |
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67 for (table = this; table; table = table->next) |
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68 { |
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69 if (table->namelen == namelen && |
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70 memcmp(table->name, name, namelen) == 0) |
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71 { |
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72 //printf("\tfound %d\n", table->textlen); |
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73 break; |
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74 } |
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75 } |
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76 return table; |
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77 } |
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78 |
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79 Macro *Macro::define(Macro **ptable, unsigned char *name, size_t namelen, unsigned char *text, size_t textlen) |
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80 { |
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81 //printf("Macro::define('%.*s' = '%.*s')\n", namelen, name, textlen, text); |
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82 |
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83 Macro *table; |
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84 |
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85 //assert(ptable); |
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86 for (table = *ptable; table; table = table->next) |
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87 { |
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88 if (table->namelen == namelen && |
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89 memcmp(table->name, name, namelen) == 0) |
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90 { |
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91 table->text = text; |
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92 table->textlen = textlen; |
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93 return table; |
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94 } |
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95 } |
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96 table = new Macro(name, namelen, text, textlen); |
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97 table->next = *ptable; |
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98 *ptable = table; |
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99 return table; |
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100 } |
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101 |
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102 /********************************************************** |
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103 * Given buffer p[0..end], extract argument marg[0..marglen]. |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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104 * Params: |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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105 * n 0: get entire argument |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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parents:
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106 * 1..9: get nth argument |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
107 * -1: get 2nd through end |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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108 */ |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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109 |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
110 unsigned extractArgN(unsigned char *p, unsigned end, unsigned char **pmarg, unsigned *pmarglen, int n) |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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111 { |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
112 /* Scan forward for matching right parenthesis. |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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113 * Nest parentheses. |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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114 * Skip over $( and $) |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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changeset
|
115 * Skip over "..." and '...' strings inside HTML tags. |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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116 * Skip over <!-- ... --> comments. |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
117 * Skip over previous macro insertions |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
118 * Set marglen. |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
119 */ |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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120 unsigned parens = 1; |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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121 unsigned char instring = 0; |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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122 unsigned incomment = 0; |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
123 unsigned intag = 0; |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
124 unsigned inexp = 0; |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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125 unsigned argn = 0; |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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126 |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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127 unsigned v = 0; |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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128 |
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129 Largstart: |
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130 #if 1 |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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131 // Skip first space, if any, to find the start of the macro argument |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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132 if (v < end && isspace(p[v])) |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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133 v++; |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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134 #else |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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135 // Skip past spaces to find the start of the macro argument |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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136 for (; v < end && isspace(p[v]); v++) |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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137 ; |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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138 #endif |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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139 *pmarg = p + v; |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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140 |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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141 for (; v < end; v++) |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
142 { unsigned char c = p[v]; |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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143 |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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144 switch (c) |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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145 { |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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146 case ',': |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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147 if (!inexp && !instring && !incomment && parens == 1) |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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148 { |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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149 argn++; |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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150 if (argn == 1 && n == -1) |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
151 { v++; |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
152 goto Largstart; |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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153 } |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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154 if (argn == n) |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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155 break; |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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156 if (argn + 1 == n) |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
157 { v++; |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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158 goto Largstart; |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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159 } |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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160 } |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
161 continue; |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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162 |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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163 case '(': |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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164 if (!inexp && !instring && !incomment) |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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165 parens++; |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
166 continue; |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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167 |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
168 case ')': |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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169 if (!inexp && !instring && !incomment && --parens == 0) |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
170 { |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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171 break; |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
172 } |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
173 continue; |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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174 |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
175 case '"': |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
176 case '\'': |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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177 if (!inexp && !incomment && intag) |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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178 { |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
179 if (c == instring) |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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180 instring = 0; |
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181 else if (!instring) |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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182 instring = c; |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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183 } |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
184 continue; |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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185 |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
186 case '<': |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
187 if (!inexp && !instring && !incomment) |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
188 { |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
189 if (v + 6 < end && |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
190 p[v + 1] == '!' && |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
191 p[v + 2] == '-' && |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
192 p[v + 3] == '-') |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
193 { |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
194 incomment = 1; |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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195 v += 3; |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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196 } |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
197 else if (v + 2 < end && |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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198 isalpha(p[v + 1])) |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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199 intag = 1; |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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200 } |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
201 continue; |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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202 |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
203 case '>': |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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204 if (!inexp) |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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205 intag = 0; |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
206 continue; |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
207 |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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parents:
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|
208 case '-': |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
209 if (!inexp && |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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parents:
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changeset
|
210 !instring && |
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211 incomment && |
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212 v + 2 < end && |
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213 p[v + 1] == '-' && |
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214 p[v + 2] == '>') |
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215 { |
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216 incomment = 0; |
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217 v += 2; |
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218 } |
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219 continue; |
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220 |
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221 case 0xFF: |
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222 if (v + 1 < end) |
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223 { |
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224 if (p[v + 1] == '{') |
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225 inexp++; |
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226 else if (p[v + 1] == '}') |
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227 inexp--; |
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228 } |
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229 continue; |
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230 |
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231 default: |
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232 continue; |
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233 } |
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234 break; |
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235 } |
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236 if (argn == 0 && n == -1) |
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237 *pmarg = p + v; |
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238 *pmarglen = p + v - *pmarg; |
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239 //printf("extractArg%d('%.*s') = '%.*s'\n", n, end, p, *pmarglen, *pmarg); |
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240 return v; |
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241 } |
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242 |
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243 |
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244 /***************************************************** |
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245 * Expand macro in place in buf. |
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246 * Only look at the text in buf from start to end. |
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247 */ |
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248 |
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249 void Macro::expand(OutBuffer *buf, unsigned start, unsigned *pend, |
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250 unsigned char *arg, unsigned arglen) |
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251 { |
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252 #if 0 |
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253 printf("Macro::expand(buf[%d..%d], arg = '%.*s')\n", start, *pend, arglen, arg); |
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254 printf("Buf is: '%.*s'\n", *pend - start, buf->data + start); |
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255 #endif |
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256 |
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257 static int nest; |
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258 if (nest > 100) // limit recursive expansion |
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259 return; |
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260 nest++; |
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261 |
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262 unsigned end = *pend; |
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263 assert(start <= end); |
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264 assert(end <= buf->offset); |
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265 |
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266 /* First pass - replace $0 |
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267 */ |
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268 arg = memdup(arg, arglen); |
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269 for (unsigned u = start; u + 1 < end; ) |
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270 { |
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271 unsigned char *p = buf->data; // buf->data is not loop invariant |
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272 |
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273 /* Look for $0, but not $$0, and replace it with arg. |
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274 */ |
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275 if (p[u] == '$' && (isdigit(p[u + 1]) || p[u + 1] == '+')) |
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276 { |
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277 if (u > start && p[u - 1] == '$') |
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278 { // Don't expand $$0, but replace it with $0 |
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279 buf->remove(u - 1, 1); |
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280 end--; |
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281 u += 1; // now u is one past the closing '1' |
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282 continue; |
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283 } |
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284 |
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285 unsigned char c = p[u + 1]; |
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286 int n = (c == '+') ? -1 : c - '0'; |
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287 |
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288 unsigned char *marg; |
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289 unsigned marglen; |
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290 extractArgN(arg, arglen, &marg, &marglen, n); |
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291 if (marglen == 0) |
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292 { // Just remove macro invocation |
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293 //printf("Replacing '$%c' with '%.*s'\n", p[u + 1], marglen, marg); |
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294 buf->remove(u, 2); |
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295 end -= 2; |
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296 } |
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297 else if (c == '+') |
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298 { |
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299 // Replace '$+' with 'arg' |
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300 //printf("Replacing '$%c' with '%.*s'\n", p[u + 1], marglen, marg); |
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301 buf->remove(u, 2); |
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302 buf->insert(u, marg, marglen); |
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303 end += marglen - 2; |
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304 |
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305 // Scan replaced text for further expansion |
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306 unsigned mend = u + marglen; |
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307 expand(buf, u, &mend, NULL, 0); |
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308 end += mend - (u + marglen); |
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309 u = mend; |
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310 } |
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311 else |
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312 { |
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313 // Replace '$1' with '\xFF{arg\xFF}' |
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314 //printf("Replacing '$%c' with '\xFF{%.*s\xFF}'\n", p[u + 1], marglen, marg); |
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315 buf->data[u] = 0xFF; |
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316 buf->data[u + 1] = '{'; |
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317 buf->insert(u + 2, marg, marglen); |
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318 buf->insert(u + 2 + marglen, "\xFF}", 2); |
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319 end += -2 + 2 + marglen + 2; |
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320 |
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321 // Scan replaced text for further expansion |
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322 unsigned mend = u + 2 + marglen; |
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323 expand(buf, u + 2, &mend, NULL, 0); |
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324 end += mend - (u + 2 + marglen); |
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325 u = mend; |
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326 } |
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327 //printf("u = %d, end = %d\n", u, end); |
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328 //printf("#%.*s#\n", end, &buf->data[0]); |
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329 continue; |
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330 } |
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331 |
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332 u++; |
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333 } |
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334 |
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335 /* Second pass - replace other macros |
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336 */ |
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337 for (unsigned u = start; u + 4 < end; ) |
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338 { |
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339 unsigned char *p = buf->data; // buf->data is not loop invariant |
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340 |
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341 /* A valid start of macro expansion is $(c, where c is |
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342 * an id start character, and not $$(c. |
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343 */ |
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344 if (p[u] == '$' && p[u + 1] == '(' && isidstart(p[u + 2])) |
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345 { |
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346 //printf("\tfound macro start '%c'\n", p[u + 2]); |
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347 unsigned char *name = p + u + 2; |
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348 unsigned namelen = 0; |
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349 |
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350 unsigned char *marg; |
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351 unsigned marglen; |
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352 |
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353 unsigned v; |
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354 /* Scan forward to find end of macro name and |
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355 * beginning of macro argument (marg). |
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356 */ |
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357 for (v = u + 2; v < end; v++) |
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358 { unsigned char c = p[v]; |
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359 |
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360 if (!isidchar(c)) |
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361 { // We've gone past the end of the macro name. |
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362 namelen = v - (u + 2); |
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363 break; |
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364 } |
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365 } |
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366 |
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367 v += extractArgN(p + v, end - v, &marg, &marglen, 0); |
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368 assert(v <= end); |
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369 |
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370 if (v < end) |
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371 { // v is on the closing ')' |
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372 if (u > start && p[u - 1] == '$') |
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373 { // Don't expand $$(NAME), but replace it with $(NAME) |
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374 buf->remove(u - 1, 1); |
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375 end--; |
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376 u = v; // now u is one past the closing ')' |
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377 continue; |
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378 } |
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379 |
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380 Macro *m = search(name, namelen); |
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381 if (m) |
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382 { |
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383 #if 0 |
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384 if (m->textlen && m->text[0] == ' ') |
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385 { m->text++; |
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386 m->textlen--; |
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387 } |
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388 #endif |
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389 if (m->inuse && marglen == 0) |
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390 { // Remove macro invocation |
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391 buf->remove(u, v + 1 - u); |
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392 end -= v + 1 - u; |
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393 } |
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394 else if (m->inuse && arglen == marglen && memcmp(arg, marg, arglen) == 0) |
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395 { // Recursive expansion; just leave in place |
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396 |
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397 } |
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398 else |
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399 { |
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400 //printf("\tmacro '%.*s'(%.*s) = '%.*s'\n", m->namelen, m->name, marglen, marg, m->textlen, m->text); |
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401 #if 1 |
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402 marg = memdup(marg, marglen); |
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403 // Insert replacement text |
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404 buf->spread(v + 1, 2 + m->textlen + 2); |
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405 buf->data[v + 1] = 0xFF; |
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406 buf->data[v + 2] = '{'; |
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407 memcpy(buf->data + v + 3, m->text, m->textlen); |
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408 buf->data[v + 3 + m->textlen] = 0xFF; |
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409 buf->data[v + 3 + m->textlen + 1] = '}'; |
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410 |
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411 end += 2 + m->textlen + 2; |
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412 |
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413 // Scan replaced text for further expansion |
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414 m->inuse++; |
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415 unsigned mend = v + 1 + 2+m->textlen+2; |
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416 expand(buf, v + 1, &mend, marg, marglen); |
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417 end += mend - (v + 1 + 2+m->textlen+2); |
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418 m->inuse--; |
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419 |
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420 buf->remove(u, v + 1 - u); |
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421 end -= v + 1 - u; |
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422 u += mend - (v + 1); |
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423 #else |
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424 // Insert replacement text |
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425 buf->insert(v + 1, m->text, m->textlen); |
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426 end += m->textlen; |
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427 |
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428 // Scan replaced text for further expansion |
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429 m->inuse++; |
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430 unsigned mend = v + 1 + m->textlen; |
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431 expand(buf, v + 1, &mend, marg, marglen); |
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432 end += mend - (v + 1 + m->textlen); |
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433 m->inuse--; |
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434 |
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435 buf->remove(u, v + 1 - u); |
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436 end -= v + 1 - u; |
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437 u += mend - (v + 1); |
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438 #endif |
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439 mem.free(marg); |
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440 //printf("u = %d, end = %d\n", u, end); |
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441 //printf("#%.*s#\n", end - u, &buf->data[u]); |
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442 continue; |
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443 } |
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444 } |
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445 else |
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446 { |
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447 // Replace $(NAME) with nothing |
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448 buf->remove(u, v + 1 - u); |
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449 end -= (v + 1 - u); |
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450 continue; |
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451 } |
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452 } |
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453 } |
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454 u++; |
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455 } |
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456 mem.free(arg); |
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457 *pend = end; |
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458 nest--; |
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459 } |