Mercurial > projects > ldc
annotate dmd2/macro.c @ 1588:71ad691baeb2
Hack to make compiling the tango 0.99.8 runtime work.
The gc has no module statements and the new frontend fails to find
the imports. So I add an explicit include path to the runtime gc
directory.
author | Christian Kamm <kamm incasoftware de> |
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date | Sat, 07 Nov 2009 10:54:40 +0100 |
parents | 638d16625da2 |
children |
rev | line source |
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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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LDC 2 compiles again.
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19 #include "rmem.h" |
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20 #include "root.h" |
758
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21 |
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22 #include "macro.h" |
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23 |
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24 #define isidstart(c) (isalpha(c) || (c) == '_') |
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25 #define isidchar(c) (isalnum(c) || (c) == '_') |
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26 |
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27 unsigned char *memdup(unsigned char *p, size_t len) |
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28 { |
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29 return (unsigned char *)memcpy(mem.malloc(len), p, len); |
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30 } |
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31 |
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32 Macro::Macro(unsigned char *name, size_t namelen, unsigned char *text, size_t textlen) |
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33 { |
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34 next = NULL; |
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35 |
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36 #if 1 |
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37 this->name = name; |
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38 this->namelen = namelen; |
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39 |
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40 this->text = text; |
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41 this->textlen = textlen; |
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42 #else |
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43 this->name = name; |
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44 this->namelen = namelen; |
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45 |
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46 this->text = text; |
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47 this->textlen = textlen; |
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48 #endif |
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49 inuse = 0; |
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50 } |
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51 |
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52 |
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53 Macro *Macro::search(unsigned char *name, size_t namelen) |
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54 { Macro *table; |
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55 |
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56 //printf("Macro::search(%.*s)\n", namelen, name); |
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57 for (table = this; table; table = table->next) |
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58 { |
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59 if (table->namelen == namelen && |
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60 memcmp(table->name, name, namelen) == 0) |
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61 { |
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62 //printf("\tfound %d\n", table->textlen); |
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63 break; |
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64 } |
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65 } |
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66 return table; |
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67 } |
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68 |
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69 Macro *Macro::define(Macro **ptable, unsigned char *name, size_t namelen, unsigned char *text, size_t textlen) |
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70 { |
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71 //printf("Macro::define('%.*s' = '%.*s')\n", namelen, name, textlen, text); |
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72 |
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73 Macro *table; |
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74 |
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75 //assert(ptable); |
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76 for (table = *ptable; table; table = table->next) |
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77 { |
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78 if (table->namelen == namelen && |
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79 memcmp(table->name, name, namelen) == 0) |
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80 { |
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81 table->text = text; |
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82 table->textlen = textlen; |
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83 return table; |
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84 } |
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85 } |
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86 table = new Macro(name, namelen, text, textlen); |
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87 table->next = *ptable; |
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88 *ptable = table; |
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89 return table; |
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90 } |
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91 |
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92 /********************************************************** |
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93 * Given buffer p[0..end], extract argument marg[0..marglen]. |
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94 * Params: |
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95 * n 0: get entire argument |
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96 * 1..9: get nth argument |
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97 * -1: get 2nd through end |
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98 */ |
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99 |
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100 unsigned extractArgN(unsigned char *p, unsigned end, unsigned char **pmarg, unsigned *pmarglen, int n) |
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101 { |
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102 /* Scan forward for matching right parenthesis. |
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103 * Nest parentheses. |
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parents:
diff
changeset
|
104 * Skip over $( and $) |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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parents:
diff
changeset
|
105 * Skip over "..." and '...' strings inside HTML tags. |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff
changeset
|
106 * Skip over <!-- ... --> comments. |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff
changeset
|
107 * Skip over previous macro insertions |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff
changeset
|
108 * Set marglen. |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff
changeset
|
109 */ |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff
changeset
|
110 unsigned parens = 1; |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff
changeset
|
111 unsigned char instring = 0; |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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parents:
diff
changeset
|
112 unsigned incomment = 0; |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff
changeset
|
113 unsigned intag = 0; |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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parents:
diff
changeset
|
114 unsigned inexp = 0; |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff
changeset
|
115 unsigned argn = 0; |
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
|
116 |
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
|
117 unsigned v = 0; |
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
|
118 |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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parents:
diff
changeset
|
119 Largstart: |
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
|
120 #if 1 |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
121 // Skip first space, if any, to find the start of the macro argument |
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
|
122 if (v < end && isspace(p[v])) |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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changeset
|
123 v++; |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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|
124 #else |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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changeset
|
125 // Skip past spaces to find the start of the macro argument |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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|
126 for (; v < end && isspace(p[v]); v++) |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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changeset
|
127 ; |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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changeset
|
128 #endif |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
129 *pmarg = p + v; |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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changeset
|
130 |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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changeset
|
131 for (; v < end; v++) |
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
|
132 { unsigned char c = p[v]; |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
133 |
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
|
134 switch (c) |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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changeset
|
135 { |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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changeset
|
136 case ',': |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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changeset
|
137 if (!inexp && !instring && !incomment && parens == 1) |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff
changeset
|
138 { |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff
changeset
|
139 argn++; |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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changeset
|
140 if (argn == 1 && n == -1) |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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changeset
|
141 { v++; |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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changeset
|
142 goto Largstart; |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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|
143 } |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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|
144 if (argn == n) |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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changeset
|
145 break; |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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changeset
|
146 if (argn + 1 == n) |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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changeset
|
147 { v++; |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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|
148 goto Largstart; |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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changeset
|
149 } |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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changeset
|
150 } |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff
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|
151 continue; |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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changeset
|
152 |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff
changeset
|
153 case '(': |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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changeset
|
154 if (!inexp && !instring && !incomment) |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff
changeset
|
155 parens++; |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff
changeset
|
156 continue; |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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changeset
|
157 |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff
changeset
|
158 case ')': |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff
changeset
|
159 if (!inexp && !instring && !incomment && --parens == 0) |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff
changeset
|
160 { |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff
changeset
|
161 break; |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff
changeset
|
162 } |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff
changeset
|
163 continue; |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff
changeset
|
164 |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff
changeset
|
165 case '"': |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff
changeset
|
166 case '\'': |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff
changeset
|
167 if (!inexp && !incomment && intag) |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff
changeset
|
168 { |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff
changeset
|
169 if (c == instring) |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff
changeset
|
170 instring = 0; |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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changeset
|
171 else if (!instring) |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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parents:
diff
changeset
|
172 instring = c; |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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changeset
|
173 } |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff
changeset
|
174 continue; |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff
changeset
|
175 |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff
changeset
|
176 case '<': |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff
changeset
|
177 if (!inexp && !instring && !incomment) |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff
changeset
|
178 { |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff
changeset
|
179 if (v + 6 < end && |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff
changeset
|
180 p[v + 1] == '!' && |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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changeset
|
181 p[v + 2] == '-' && |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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changeset
|
182 p[v + 3] == '-') |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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changeset
|
183 { |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff
changeset
|
184 incomment = 1; |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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|
185 v += 3; |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff
changeset
|
186 } |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff
changeset
|
187 else if (v + 2 < end && |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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changeset
|
188 isalpha(p[v + 1])) |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
189 intag = 1; |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
190 } |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff
changeset
|
191 continue; |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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|
192 |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff
changeset
|
193 case '>': |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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changeset
|
194 if (!inexp) |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
195 intag = 0; |
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
|
196 continue; |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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changeset
|
197 |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff
changeset
|
198 case '-': |
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
|
199 if (!inexp && |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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parents:
diff
changeset
|
200 !instring && |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff
changeset
|
201 incomment && |
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
|
202 v + 2 < end && |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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parents:
diff
changeset
|
203 p[v + 1] == '-' && |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff
changeset
|
204 p[v + 2] == '>') |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff
changeset
|
205 { |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff
changeset
|
206 incomment = 0; |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff
changeset
|
207 v += 2; |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff
changeset
|
208 } |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff
changeset
|
209 continue; |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff
changeset
|
210 |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff
changeset
|
211 case 0xFF: |
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212 if (v + 1 < end) |
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213 { |
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214 if (p[v + 1] == '{') |
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215 inexp++; |
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216 else if (p[v + 1] == '}') |
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217 inexp--; |
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218 } |
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219 continue; |
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220 |
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221 default: |
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222 continue; |
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223 } |
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224 break; |
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225 } |
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226 if (argn == 0 && n == -1) |
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227 *pmarg = p + v; |
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228 *pmarglen = p + v - *pmarg; |
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229 //printf("extractArg%d('%.*s') = '%.*s'\n", n, end, p, *pmarglen, *pmarg); |
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230 return v; |
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231 } |
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232 |
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233 |
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234 /***************************************************** |
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235 * Expand macro in place in buf. |
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236 * Only look at the text in buf from start to end. |
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237 */ |
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238 |
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239 void Macro::expand(OutBuffer *buf, unsigned start, unsigned *pend, |
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240 unsigned char *arg, unsigned arglen) |
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241 { |
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242 #if 0 |
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243 printf("Macro::expand(buf[%d..%d], arg = '%.*s')\n", start, *pend, arglen, arg); |
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244 printf("Buf is: '%.*s'\n", *pend - start, buf->data + start); |
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245 #endif |
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246 |
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247 static int nest; |
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248 if (nest > 100) // limit recursive expansion |
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249 return; |
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250 nest++; |
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251 |
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252 unsigned end = *pend; |
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253 assert(start <= end); |
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254 assert(end <= buf->offset); |
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255 |
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256 /* First pass - replace $0 |
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257 */ |
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258 arg = memdup(arg, arglen); |
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259 for (unsigned u = start; u + 1 < end; ) |
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260 { |
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261 unsigned char *p = buf->data; // buf->data is not loop invariant |
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262 |
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263 /* Look for $0, but not $$0, and replace it with arg. |
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264 */ |
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265 if (p[u] == '$' && (isdigit(p[u + 1]) || p[u + 1] == '+')) |
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266 { |
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267 if (u > start && p[u - 1] == '$') |
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268 { // Don't expand $$0, but replace it with $0 |
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269 buf->remove(u - 1, 1); |
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270 end--; |
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271 u += 1; // now u is one past the closing '1' |
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272 continue; |
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273 } |
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274 |
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275 unsigned char c = p[u + 1]; |
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276 int n = (c == '+') ? -1 : c - '0'; |
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277 |
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278 unsigned char *marg; |
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279 unsigned marglen; |
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280 extractArgN(arg, arglen, &marg, &marglen, n); |
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281 if (marglen == 0) |
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282 { // Just remove macro invocation |
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283 //printf("Replacing '$%c' with '%.*s'\n", p[u + 1], marglen, marg); |
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284 buf->remove(u, 2); |
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285 end -= 2; |
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286 } |
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287 else if (c == '+') |
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288 { |
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289 // Replace '$+' with 'arg' |
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290 //printf("Replacing '$%c' with '%.*s'\n", p[u + 1], marglen, marg); |
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291 buf->remove(u, 2); |
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292 buf->insert(u, marg, marglen); |
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293 end += marglen - 2; |
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294 |
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295 // Scan replaced text for further expansion |
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296 unsigned mend = u + marglen; |
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297 expand(buf, u, &mend, NULL, 0); |
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298 end += mend - (u + marglen); |
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299 u = mend; |
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300 } |
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301 else |
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302 { |
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303 // Replace '$1' with '\xFF{arg\xFF}' |
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304 //printf("Replacing '$%c' with '\xFF{%.*s\xFF}'\n", p[u + 1], marglen, marg); |
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305 buf->data[u] = 0xFF; |
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306 buf->data[u + 1] = '{'; |
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307 buf->insert(u + 2, marg, marglen); |
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308 buf->insert(u + 2 + marglen, "\xFF}", 2); |
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309 end += -2 + 2 + marglen + 2; |
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310 |
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311 // Scan replaced text for further expansion |
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312 unsigned mend = u + 2 + marglen; |
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313 expand(buf, u + 2, &mend, NULL, 0); |
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314 end += mend - (u + 2 + marglen); |
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315 u = mend; |
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316 } |
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317 //printf("u = %d, end = %d\n", u, end); |
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318 //printf("#%.*s#\n", end, &buf->data[0]); |
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319 continue; |
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320 } |
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321 |
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322 u++; |
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323 } |
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324 |
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325 /* Second pass - replace other macros |
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326 */ |
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327 for (unsigned u = start; u + 4 < end; ) |
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328 { |
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329 unsigned char *p = buf->data; // buf->data is not loop invariant |
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330 |
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331 /* A valid start of macro expansion is $(c, where c is |
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332 * an id start character, and not $$(c. |
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333 */ |
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334 if (p[u] == '$' && p[u + 1] == '(' && isidstart(p[u + 2])) |
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335 { |
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336 //printf("\tfound macro start '%c'\n", p[u + 2]); |
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337 unsigned char *name = p + u + 2; |
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338 unsigned namelen = 0; |
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339 |
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340 unsigned char *marg; |
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341 unsigned marglen; |
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342 |
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343 unsigned v; |
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344 /* Scan forward to find end of macro name and |
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345 * beginning of macro argument (marg). |
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346 */ |
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347 for (v = u + 2; v < end; v++) |
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348 { unsigned char c = p[v]; |
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349 |
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350 if (!isidchar(c)) |
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351 { // We've gone past the end of the macro name. |
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352 namelen = v - (u + 2); |
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353 break; |
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354 } |
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355 } |
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356 |
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357 v += extractArgN(p + v, end - v, &marg, &marglen, 0); |
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358 assert(v <= end); |
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359 |
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360 if (v < end) |
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361 { // v is on the closing ')' |
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362 if (u > start && p[u - 1] == '$') |
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363 { // Don't expand $$(NAME), but replace it with $(NAME) |
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364 buf->remove(u - 1, 1); |
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365 end--; |
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366 u = v; // now u is one past the closing ')' |
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367 continue; |
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368 } |
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369 |
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370 Macro *m = search(name, namelen); |
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371 if (m) |
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372 { |
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373 #if 0 |
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374 if (m->textlen && m->text[0] == ' ') |
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375 { m->text++; |
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376 m->textlen--; |
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377 } |
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378 #endif |
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379 if (m->inuse && marglen == 0) |
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380 { // Remove macro invocation |
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381 buf->remove(u, v + 1 - u); |
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382 end -= v + 1 - u; |
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383 } |
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384 else if (m->inuse && arglen == marglen && memcmp(arg, marg, arglen) == 0) |
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385 { // Recursive expansion; just leave in place |
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386 |
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387 } |
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388 else |
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389 { |
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390 //printf("\tmacro '%.*s'(%.*s) = '%.*s'\n", m->namelen, m->name, marglen, marg, m->textlen, m->text); |
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391 #if 1 |
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392 marg = memdup(marg, marglen); |
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393 // Insert replacement text |
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394 buf->spread(v + 1, 2 + m->textlen + 2); |
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395 buf->data[v + 1] = 0xFF; |
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396 buf->data[v + 2] = '{'; |
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397 memcpy(buf->data + v + 3, m->text, m->textlen); |
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398 buf->data[v + 3 + m->textlen] = 0xFF; |
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399 buf->data[v + 3 + m->textlen + 1] = '}'; |
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400 |
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401 end += 2 + m->textlen + 2; |
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402 |
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403 // Scan replaced text for further expansion |
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404 m->inuse++; |
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405 unsigned mend = v + 1 + 2+m->textlen+2; |
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406 expand(buf, v + 1, &mend, marg, marglen); |
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407 end += mend - (v + 1 + 2+m->textlen+2); |
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408 m->inuse--; |
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409 |
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410 buf->remove(u, v + 1 - u); |
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411 end -= v + 1 - u; |
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412 u += mend - (v + 1); |
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413 #else |
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414 // Insert replacement text |
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415 buf->insert(v + 1, m->text, m->textlen); |
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416 end += m->textlen; |
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417 |
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418 // Scan replaced text for further expansion |
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419 m->inuse++; |
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420 unsigned mend = v + 1 + m->textlen; |
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421 expand(buf, v + 1, &mend, marg, marglen); |
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422 end += mend - (v + 1 + m->textlen); |
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423 m->inuse--; |
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424 |
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425 buf->remove(u, v + 1 - u); |
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426 end -= v + 1 - u; |
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427 u += mend - (v + 1); |
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428 #endif |
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429 mem.free(marg); |
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430 //printf("u = %d, end = %d\n", u, end); |
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431 //printf("#%.*s#\n", end - u, &buf->data[u]); |
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432 continue; |
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433 } |
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434 } |
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435 else |
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436 { |
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437 // Replace $(NAME) with nothing |
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438 buf->remove(u, v + 1 - u); |
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439 end -= (v + 1 - u); |
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440 continue; |
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441 } |
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442 } |
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443 } |
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444 u++; |
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445 } |
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446 mem.free(arg); |
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447 *pend = end; |
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448 nest--; |
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449 } |