BOOL RenderStack::Push(AttributeValue *pAttr, BOOL Temporary)
{
// If we're saving an attribute that hasn't been set up yet, don't bother.
if (pAttr == NULL)
return TRUE;
// If we need more space, then get some.
if (Top == StackLimit)
{
if (!GrowStack())
return FALSE;
}
// Push the record onto the stack
TheStack[Top].pAttrValue = pAttr;
TheStack[Top].ContextLevel = ContextLevel;
TheStack[Top].Temporary = Temporary;
// Sanity checks
CC_ASSERT_VALID(pAttr);
ENSURE((Temporary == TRUE) || (Temporary == FALSE),
"Duff Temporary flag passed to Push()");
// Move stack pointer to next record
Top++;
// Worked ok
return TRUE;
}
EFI_STATUS
PushStack (
IN OUT EFI_HII_VALUE **Stack,
IN OUT EFI_HII_VALUE **StackPtr,
IN OUT EFI_HII_VALUE **StackEnd,
IN EFI_HII_VALUE *Data
)
/*++
Routine Description:
Push an element onto the Boolean Stack
Arguments:
Stack - On input: old stack; On output: new stack
StackPtr - On input: old stack pointer; On output: new stack pointer
StackEnd - On input: old stack end; On output: new stack end
Data - Data to push.
Returns:
EFI_SUCCESS - Push stack success.
--*/
{
EFI_STATUS Status;
//
// Check for a stack overflow condition
//
if (*StackPtr >= *StackEnd) {
//
// Grow the stack
//
Status = GrowStack (Stack, StackPtr, StackEnd);
if (EFI_ERROR (Status)) {
return Status;
}
}
//
// Push the item onto the stack
//
EfiCopyMem (*StackPtr, Data, sizeof (EFI_HII_VALUE));
*StackPtr = *StackPtr + 1;
return EFI_SUCCESS;
}