class String16
{
public:
+ /* use String16(StaticLinkage) if you're statically linking against
+ * libutils and declaring an empty static String16, e.g.:
+ *
+ * static String16 sAStaticEmptyString(String16::kEmptyString);
+ * static String16 sAnotherStaticEmptyString(sAStaticEmptyString);
+ */
+ enum StaticLinkage { kEmptyString };
+
String16();
+ explicit String16(StaticLinkage);
String16(const String16& o);
String16(const String16& o,
size_t len,
class String8
{
public:
+ /* use String8(StaticLinkage) if you're statically linking against
+ * libutils and declaring an empty static String8, e.g.:
+ *
+ * static String8 sAStaticEmptyString(String8::kEmptyString);
+ * static String8 sAnotherStaticEmptyString(sAStaticEmptyString);
+ */
+ enum StaticLinkage { kEmptyString };
+
String8();
+ explicit String8(StaticLinkage);
String8(const String8& o);
explicit String8(const char* o);
explicit String8(const char* o, size_t numChars);
{
}
+String16::String16(StaticLinkage)
+ : mString(0)
+{
+ // this constructor is used when we can't rely on the static-initializers
+ // having run. In this case we always allocate an empty string. It's less
+ // efficient than using getEmptyString(), but we assume it's uncommon.
+
+ char16_t* data = static_cast<char16_t*>(
+ SharedBuffer::alloc(sizeof(char16_t))->data());
+ data[0] = 0;
+ mString = data;
+}
+
String16::String16(const String16& o)
: mString(o.mString)
{
static inline char* getEmptyString()
{
- if (!gEmptyStringBuf) initialize_string8();
-
gEmptyStringBuf->acquire();
return gEmptyString;
}
void initialize_string8()
{
- if (gEmptyStringBuf) return;
-
// HACK: This dummy dependency forces linking libutils Static.cpp,
// which is needed to initialize String8/String16 classes.
// These variables are named for Darwin, but are needed elsewhere too,
{
}
+String8::String8(StaticLinkage)
+ : mString(0)
+{
+ // this constructor is used when we can't rely on the static-initializers
+ // having run. In this case we always allocate an empty string. It's less
+ // efficient than using getEmptyString(), but we assume it's uncommon.
+
+ char* data = static_cast<char*>(
+ SharedBuffer::alloc(sizeof(char))->data());
+ data[0] = 0;
+ mString = data;
+}
+
String8::String8(const String8& o)
: mString(o.mString)
{