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version 1.1.2.1, 2005/10/08 02:01:46
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version 1.1.2.7, 2005/10/14 13:42:31
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| #ifndef _Pegasus_StringRep_h | #ifndef _Pegasus_StringRep_h |
| #define _Pegasus_StringRep_h | #define _Pegasus_StringRep_h |
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| #include <Pegasus/Common/Atomic.h> |
#include <Pegasus/Common/IPC.h> |
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#include <new> |
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| PEGASUS_NAMESPACE_BEGIN | PEGASUS_NAMESPACE_BEGIN |
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| static StringRep* createASCII7(const char* data, size_t size); | static StringRep* createASCII7(const char* data, size_t size); |
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| static StringRep* copy_on_write(StringRep* rep); |
static StringRep* copyOnWrite(StringRep* rep); |
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| static Uint32 length(const Uint16* str); | static Uint32 length(const Uint16* str); |
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| static void unref(const StringRep* rep); | static void unref(const StringRep* rep); |
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| static StringRep _empty_rep; |
static StringRep _emptyRep; |
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// Number of characters in this string, excluding the null terminator. |
| size_t size; | size_t size; |
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// Number of characters this representation has room for. This is |
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// greater or equal to size. |
| size_t cap; | size_t cap; |
| Atomic refs; |
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// Number of string refering to this StringRep (1, 2, etc). |
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AtomicInt refs; |
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// The first character in the string. Extra space is allocated off the |
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// end of this structure for additional characters. |
| Uint16 data[1]; | Uint16 data[1]; |
| }; | }; |
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| inline void StringRep::free(StringRep* rep) | inline void StringRep::free(StringRep* rep) |
| { | { |
| Atomic_destroy(&rep->refs); |
rep->refs.~AtomicInt(); |
| ::operator delete(rep); | ::operator delete(rep); |
| } | } |
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| inline StringRep::StringRep() : size(0), cap(0) |
inline StringRep::StringRep() : size(0), cap(0), refs(2) |
| { | { |
| // Only called on _empty_rep. |
// Only called on _emptyRep. We set the reference count to two to |
| Atomic_create(&refs, 99); |
// keep a String from modifying it (if the reference count were one, |
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// a string would think it was the sole owner of the StringRep object). |
| data[0] = 0; | data[0] = 0; |
| } | } |
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| inline StringRep::~StringRep() | inline StringRep::~StringRep() |
| { | { |
| // Only called on _empty_rep. |
// Only called on _emptyRep. |
| Atomic_destroy(&refs); |
refs.~AtomicInt(); |
| } | } |
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| inline void StringRep::ref(const StringRep* rep) | inline void StringRep::ref(const StringRep* rep) |
| { | { |
| if (rep != &StringRep::_empty_rep) |
if (rep != &StringRep::_emptyRep) |
| Atomic_inc(&((StringRep*)rep)->refs); |
((StringRep*)rep)->refs++; |
| } | } |
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| inline void StringRep::unref(const StringRep* rep) | inline void StringRep::unref(const StringRep* rep) |
| { | { |
| if (rep != &StringRep::_empty_rep && |
if (rep != &StringRep::_emptyRep && |
| Atomic_dec_and_test(&((StringRep*)rep)->refs)) |
((StringRep*)rep)->refs.DecAndTestIfZero()) |
| StringRep::free((StringRep*)rep); | StringRep::free((StringRep*)rep); |
| } | } |
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| PEGASUS_COMMON_LINKAGE void String_throw_out_of_bounds(); |
PEGASUS_COMMON_LINKAGE void StringThrowOutOfBounds(); |
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PEGASUS_COMMON_LINKAGE void StringAppendCharAux(StringRep*& _rep); |
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| #ifdef PEGASUS_STRING_NO_THROW |
PEGASUS_COMMON_LINKAGE Boolean StringEqualNoCase( |
| # define _check_bounds(ARG1, ARG2) /* empty */ |
const String& s1, const String& s2); |
| #else |
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| inline void _check_bounds(size_t index, size_t size) |
PEGASUS_COMMON_LINKAGE Uint32 StringFindAux( |
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const StringRep* _rep, const Char16* s, Uint32 n); |
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inline void _checkBounds(size_t index, size_t size) |
| { | { |
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#ifndef PEGASUS_STRING_NO_THROW |
| if (index > size) | if (index > size) |
| String_throw_out_of_bounds(); |
StringThrowOutOfBounds(); |
| } |
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| #endif | #endif |
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} |
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| PEGASUS_NAMESPACE_END | PEGASUS_NAMESPACE_END |
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StringRep.h
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