Mercurial > projects > ldc
annotate dmd2/lstring.h @ 953:5fa3e0ea06e9
Merged a bunch recent dmd v1 frontend changes into the dmd v2 tree.
author | Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> |
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date | Fri, 13 Feb 2009 22:20:30 +0100 |
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 |