Mercurial > projects > ldc
diff dmd/lstring.c @ 1:c53b6e3fe49a trunk
[svn r5] Initial commit. Most things are very rough.
author | lindquist |
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date | Sat, 01 Sep 2007 21:43:27 +0200 |
parents | |
children | b30fe7e1dbb9 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/dmd/lstring.c Sat Sep 01 21:43:27 2007 +0200 @@ -0,0 +1,59 @@ +// lstring.c + +// Copyright (c) 1999-2002 by Digital Mars +// All Rights Reserved +// written by Walter Bright +// www.digitalmars.com +// License for redistribution is by either the Artistic License +// in artistic.txt, or the GNU General Public License in gnu.txt. +// See the included readme.txt for details. + +#include <stdlib.h> + +#include "dchar.h" +#include "mem.h" +#include "lstring.h" + +Lstring Lstring::zero = LSTRING_EMPTY(); + +Lstring *Lstring::ctor(const dchar *p, unsigned length) +{ + Lstring *s; + + s = alloc(length); + memcpy(s->string, p, length * sizeof(dchar)); + return s; +} + +Lstring *Lstring::alloc(unsigned length) +{ + Lstring *s; + + s = (Lstring *)mem.malloc(size(length)); + s->length = length; + s->string[length] = 0; + return s; +} + +Lstring *Lstring::append(const Lstring *s) +{ + Lstring *t; + + if (!s->length) + return this; + t = alloc(length + s->length); + memcpy(t->string, string, length * sizeof(dchar)); + memcpy(t->string + length, s->string, s->length * sizeof(dchar)); + return t; +} + +Lstring *Lstring::substring(int start, int end) +{ + Lstring *t; + + if (start == end) + return &zero; + t = alloc(end - start); + memcpy(t->string, string + start, (end - start) * sizeof(dchar)); + return t; +}