Mercurial > projects > ldc
annotate dmd2/lstring.h @ 1351:8d501abecd24
Initial (but disabled) fix for ticket #294 , the actual part that fixes the bug is in a #if 0 block as I'm afraid it will cause regressions. I'm most likely not going to be around tonight, and maybe not tomorrow as well, so I'm pushing it in case someone wants to run some serious testing/investigate the problem noted in llvmhelpers.cpp : realignOffset .
author | Tomas Lindquist Olsen <tomas.l.olsen gmail com> |
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date | Thu, 14 May 2009 17:20:17 +0200 |
parents | f04dde6e882c |
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1 |
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2 // lstring.h |
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3 // length-prefixed strings |
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4 |
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5 // Copyright (c) 1999-2002 by Digital Mars |
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6 // All Rights Reserved |
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7 // written by Walter Bright |
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8 // www.digitalmars.com |
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9 // License for redistribution is by either the Artistic License |
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10 // in artistic.txt, or the GNU General Public License in gnu.txt. |
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11 // See the included readme.txt for details. |
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12 |
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13 #ifndef LSTRING_H |
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14 #define LSTRING_H 1 |
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15 |
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16 #include "dchar.h" |
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17 |
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18 struct Lstring |
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19 { |
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20 unsigned length; |
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21 |
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22 // Disable warning about nonstandard extension |
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23 #pragma warning (disable : 4200) |
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24 dchar string[]; |
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25 |
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26 static Lstring zero; // 0 length string |
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27 |
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28 // No constructors because we want to be able to statically |
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29 // initialize Lstring's, and Lstrings are of variable size. |
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30 |
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31 #if M_UNICODE |
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32 #define LSTRING(p,length) { length, L##p } |
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33 #else |
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34 #define LSTRING(p,length) { length, p } |
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35 #endif |
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36 |
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37 #if __GNUC__ |
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38 #define LSTRING_EMPTY() { 0 } |
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39 #else |
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40 #define LSTRING_EMPTY() LSTRING("", 0) |
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41 #endif |
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42 |
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43 static Lstring *ctor(const dchar *p) { return ctor(p, Dchar::len(p)); } |
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44 static Lstring *ctor(const dchar *p, unsigned length); |
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45 static unsigned size(unsigned length) { return sizeof(Lstring) + (length + 1) * sizeof(dchar); } |
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46 static Lstring *alloc(unsigned length); |
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47 Lstring *clone(); |
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48 |
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49 unsigned len() { return length; } |
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50 |
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51 dchar *toDchars() { return string; } |
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52 |
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53 hash_t hash() { return Dchar::calcHash(string, length); } |
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54 hash_t ihash() { return Dchar::icalcHash(string, length); } |
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55 |
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56 static int cmp(const Lstring *s1, const Lstring *s2) |
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57 { |
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58 int c = s2->length - s1->length; |
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59 return c ? c : Dchar::memcmp(s1->string, s2->string, s1->length); |
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60 } |
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61 |
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62 static int icmp(const Lstring *s1, const Lstring *s2) |
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63 { |
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64 int c = s2->length - s1->length; |
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65 return c ? c : Dchar::memicmp(s1->string, s2->string, s1->length); |
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66 } |
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67 |
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68 Lstring *append(const Lstring *s); |
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69 Lstring *substring(int start, int end); |
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70 }; |
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71 |
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72 #endif |