void
nsCSSExpandedDataBlock::DoExpand(nsCSSCompressedDataBlock *aBlock,
bool aImportant)
{
/*
* Save needless copying and allocation by copying the memory
* corresponding to the stored data in the compressed block.
*/
for (uint32_t i = 0; i < aBlock->mNumProps; i++) {
nsCSSProperty iProp = aBlock->PropertyAtIndex(i);
NS_ABORT_IF_FALSE(!nsCSSProps::IsShorthand(iProp), "out of range");
NS_ABORT_IF_FALSE(!HasPropertyBit(iProp),
"compressed block has property multiple times");
SetPropertyBit(iProp);
if (aImportant)
SetImportantBit(iProp);
const nsCSSValue* val = aBlock->ValueAtIndex(i);
nsCSSValue* dest = PropertyAt(iProp);
NS_ABORT_IF_FALSE(val->GetUnit() != eCSSUnit_Null, "oops");
NS_ABORT_IF_FALSE(dest->GetUnit() == eCSSUnit_Null,
"expanding into non-empty block");
#ifdef NS_BUILD_REFCNT_LOGGING
dest->~nsCSSValue();
#endif
memcpy(dest, val, sizeof(nsCSSValue));
}
// Set the number of properties to zero so that we don't destroy the
// remnants of what we just copied.
aBlock->SetNumPropsToZero();
delete aBlock;
}
void
nsCSSExpandedDataBlock::AddLonghandProperty(nsCSSProperty aProperty,
const nsCSSValue& aValue)
{
NS_ABORT_IF_FALSE(!nsCSSProps::IsShorthand(aProperty),
"property out of range");
nsCSSValue& storage = *static_cast<nsCSSValue*>(PropertyAt(aProperty));
storage = aValue;
SetPropertyBit(aProperty);
}
void
nsCSSExpandedDataBlock::DoExpand(nsCSSCompressedDataBlock *aBlock,
bool aImportant)
{
/*
* Save needless copying and allocation by copying the memory
* corresponding to the stored data in the compressed block.
*/
const char* cursor = aBlock->Block();
const char* cursor_end = aBlock->BlockEnd();
while (cursor < cursor_end) {
nsCSSProperty iProp = PropertyAtCursor(cursor);
NS_ABORT_IF_FALSE(!nsCSSProps::IsShorthand(iProp), "out of range");
NS_ABORT_IF_FALSE(!HasPropertyBit(iProp),
"compressed block has property multiple times");
SetPropertyBit(iProp);
if (aImportant)
SetImportantBit(iProp);
const nsCSSValue* val = ValueAtCursor(cursor);
nsCSSValue* dest = PropertyAt(iProp);
NS_ABORT_IF_FALSE(val->GetUnit() != eCSSUnit_Null, "oops");
NS_ABORT_IF_FALSE(dest->GetUnit() == eCSSUnit_Null,
"expanding into non-empty block");
#ifdef NS_BUILD_REFCNT_LOGGING
dest->~nsCSSValue();
#endif
memcpy(dest, val, sizeof(nsCSSValue));
cursor += CDBValueStorage_advance;
}
NS_ABORT_IF_FALSE(cursor == cursor_end, "inconsistent data");
// Don't destroy remnants of what we just copied
aBlock->SetBlockEnd(aBlock->Block());
delete aBlock;
}
